研究者詳細 - 米澤　拓郎

論文 - 米澤　拓郎

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Optical flow visual stimuli induce body sway and visually-induced motion sickness in virtual reality system: A preliminary study 査読有り Open Access

Otake, Y; Kanaoka, A; Aoki, S; Osumi, M; Yonezawa, T; Sumitani, M

DIGITAL HEALTH 12 巻頁： 20552076261420289 2026年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Digital Health

Objectives: Visually-induced motion sickness (VIMS) remains an unsolved issue when using head-mounted displays (HMD) in immersive virtual reality (VR) systems. We investigate the influence of restricted visual field on sensorimotor incongruence of postural control in an immersive VR environment, as a surrogate marker of VIMS while standing steadily and viewing ambiguous optical-flow visual stimuli. Methods: Twenty-seven healthy participants wore HMD and viewed optical flow visual stimuli (called the plaid motion pattern) using a VR system. Visual stimuli were presented on a full-screen display, either only in the center or periphery of the visual field, or nowhere (Natural). To evaluate standing posture stability, we measured spatial (length and area of the center of the pressure (COP)) and temporal dynamics of body sway using a stabilometer. Subjective feelings of VIMS were assessed for each visual stimulus condition. Results: The full-screen condition significantly worsened the COP measurements and feelings. The COP areas of standing balance under the center of the visual field condition were significantly smaller than those under the full-screen condition; however, the periphery of the visual field condition was comparable to the full-screen condition. The condition effects for the conditions (natural, center of the visual field, periphery of the visual field and full-screen) were observed in the COP measurements and subjective feelings. Conclusion: Optical-flow visual stimuli can induce body sway, suggesting sensorimotor incongruence in postural control. Ancillary findings demonstrated that subsequent to full-screen presentation, the periphery of the visual field potentially contributes to spatial and temporal dynamics of body sway and the sensorimotor incongruence rather than the central area.

DOI： 10.1177/20552076261420289

Representating Negative State of a Robot’s Abdominal/Thoracic Breathing Accompanied Movement System 査読有り

Fujii R., Nishiguchi Y., Moriyama K., Yonezawa T.

Lecture Notes in Computer Science 16337 LNCS 巻頁： 201 - 215 2026年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Lecture Notes in Computer Science

This paper presents an upper-body robot system that expresses involuntary abdominal and thoracic (chest) breathing. The system employs servomotors to generate breathing-related movements in both the shoulder and abdominal regions in response to the robot’s breathing parameters. By adjusting the speed, stability, and range of motion of each servomotor, the system aims to enhance nonverbal communication by expressing emotional and physical states such as excitement, anxiety, panic, fatigue, and debility. Experimental results suggest that combining multiple elements of breathing expression can improve the robot’s ability to evoke empathetic responses through emotionally expressive physical behavior.

DOI： 10.1007/978-3-032-12801-0_14

Multi-City Next Location Prediction through Mobility-Derived Multi-Pattern Transfer Learning 査読有り

Terashima H., Tamura N., Shoji K., Urano K., Yonezawa T., Kawaguchi N.

33rd ACM Sigspatial International Conference on Advances in Geographic Information Systems ACM Sigspatial 2025 頁： 1218 - 1221 2025年11月

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：33rd ACM Sigspatial International Conference on Advances in Geographic Information Systems ACM Sigspatial 2025

In this study, we propose MoDeMIT (Mobility-Derived Multi-Insight Transfer), a human mobility prediction method that transfers various patterns shared across cities, extracted from mobility histories. Existing studies on human mobility prediction have primarily focused on learning the mobility patterns of users in the target city, without considering applications in cities with limited data. Moreover, relying solely on mobility patterns poses inherent limitations on prediction accuracy. The proposed MoDeMIT addresses these issues by defining and transferring multiple patterns shared across cities, such as lifestyle patterns and large-scale mobility patterns derived from mobility histories, as well as mobility patterns. This approach enables improvements in prediction accuracy compared to existing methods. We validate the effectiveness of MoDeMIT using real-world human mobility datasets. Furthermore, in the HuMob Challenge 2025 (GISCUP), MoDeMIT achieved a GEOBLEU score of [Average: 0.1632, CityA: 0.1504, CityB: 0.1471, CityC: 0.1801, CityD: 0.1753] and ranked within the top five teams.

DOI： 10.1145/3748636.3771311

VR180 遠隔ロボットアームシステムにおける操作支援のための情報提示手法の検討 Open Access

筒井秀斗, 渡邉企章, 宇佐美龍斗, 具志祐希, 渡辺圭貴, 林田望海, 志村魁哉, 浦野健太, 米澤拓郎, 河口信夫

第85回UBI研究会 2025年2月

Efficient Edge AI based Annotation and Detection Framework for Logistics Warehouses 査読有り国際誌

Yuki Mori, Yusuke Asai, Keisuke Higashiura, Shin Katayama, Kenta Urano, Takuro Yonezawa, Nobuo Kawaguchi

IEEE Consumer Communications & Networking Conference 2025 2025年1月

Fixture-aware Panoramic Ceiling Image Synthesis Using an Omnidirectional Camera

Kohama D., Nagata Y., Yasutake K., Katayama S., Urano K., Yonezawa T., Kawaguchi N.

Journal of Information Processing 33 巻 ( 0 ) 頁： 245 - 258 2025年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

The manual creation of a ceiling plan consumes many human resources to confirm the current state of existing buildings for renovation. Identifying the positions and the types of existing fixtures is crucial for drawing a ceiling plan. Therefore, to assist in drawing a ceiling plan, an efficient method that generates a reliable photorealistic whole ceiling surface image is essential. We present a method of fixture-aware panoramic ceiling image synthesis using an omnidirectional camera. A fixture-aware panoramic ceiling image is a photorealistic image that depicts the whole ceiling surface and no seams on ceiling fixtures for its reliability regarding assistance in drawing a ceiling plan. The proposed method is remarkably effortless because it requires the users to work only 2 procedures for synthesizing the image, 1) shooting an omnidirectional video underneath the ceiling and 2) fixture measurement in the image. In the experiment, we evaluated the resulting image for the positional and shape accuracy of the ceiling fixtures and the time efficiency of the measurement. Our proposed method demonstrated a positional accuracy of 2.25 times higher, a shape accuracy of 5.87 times higher, and a time efficiency of the measurement 11.09 times higher than the baseline.

DOI： 10.2197/ipsjjip.33.245

オプティカルフロー視覚刺激は、バーチャルリアリティシステムにおいて無意識の身体動揺と視覚誘発性気分不良を誘発する査読有り

住谷昌彦, 大竹祐子, 金岡晃, 青木崇行, 米澤拓郎

日本VR医学会学術大会プログラム・抄録集 2025 巻 ( 0 ) 頁： 10 2025年

Soccer Player Tracking Using Multiple Features for ID Switch Correction in Fixed-View Videos 査読有り

Mori, Y; Takagi, S; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

8TH INTERNATIONAL ACM WORKSHOP ON MULTIMEDIA CONTENT ANALYSIS IN SPORTS, MMSPORTS 2025 頁： 189 - 195 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Mmsports 2025 8th International ACM Workshop on Multimedia Content Analysis in Sports

Player tracking in soccer is becoming more important for tactical analysis and performance evaluation. Many tracking methods have been developed using broadcast videos. However, such videos are often unavailable for amateur matches, such as those in universities or high schools. Fixed-viewpoint cameras are easier to install, but they cannot move or zoom. Because of this, many players appear small in each frame, which makes it hard to detect, identify, and track them. Tracking becomes more difficult when players are close to each other. This often causes ID switches (mistakes in identifying players) and lowers accuracy. To solve this problem, we joined the SoccerTrack Challenge 2025, which focuses on tracking players in videos from fixed-viewpoint cameras. We developed a new method to improve tracking accuracy in this setting. In our method, we divided each frame into multiple regions and detected players in each region. This helped us detect even small players more accurately. We also used features like uniform color, jersey numbers, and goalkeeper identification to correct ID switches and improve tracking performance. As a result, our method achieved a HOTA score of 0.59 and ranked among the top teams in the challenge.

DOI： 10.1145/3728423.3759417

Smartphone-Based Activity Recognition in a LogisticsWarehouse Using Self-supervised Representation Learning 査読有り

Watanabe, K; Kano, K; Hossain, T; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

COMPANION OF THE 2025 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING, UBICOMP COMPANION 2025 頁： 1067 - 1073 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ubicomp Companion 2025 Companion of the 2025 ACM International Joint Conference on Pervasive and Ubiquitous Computing

To address labor shortages in logistics, digital twins that digitize physical environments are gaining attention, as they enable visualization and simulation-based optimization of warehouse operations. However, digitizing worker activities is particularly challenging due to operational burden and difficulty in adapting to diverse tasks. In response to this issue, we propose a deep learning-based framework for automatic warehouse task recognition using smartphone inertial sensors (accelerometer and gyroscope). Our model combines a CNN pretrained on unlabeled data using SimCLR, a self-supervised representation learning method, to improve generalization, and a Transformer encoder to capture task-level context. We collected data in a logistics warehouse and conducted cross-validation using 6 hours of annotated data from 10 individuals. As a result, the proposed method achieved a weighted F1 score of 0.89, improving by 7 points over the model without pretraining.

DOI： 10.1145/3714394.3756198

SemantiPack: An Efficient Real-World Data Compressor Using Structural and Semantic Metadata 査読有り Open Access

Nagata, Y; Kohama, D; Watanabe, Y; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

IEEE ACCESS 13 巻頁： 114159 - 114178 2025年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Access

The exponential growth of Real-World Data (RWD), primarily collected from IoT sensors and spanning domains such as mobility, environment, and energy consumption, presents critical challenges due to its scale, heterogeneity, and structural variability. Traditional compression methods often fail to adapt efficiently to these complexities, leading to sub-optimal storage and analysis performance. Additionally, while several metadata schemas exist to enhance the availability of RWD, smaller organizations often lack the resources to create and manage metadata effectively. This paper introduces RWD Profile, an automatically generatable metadata schema for RWD, and SemantiPack, which applies tailored compression to data fields in the individual RWD based on RWD Profile. RWD Profile has two kinds of metadata, Structural Profile and Semantic Profile. Structural Profile is generated through rule-based systems, while Semantic Profile is generated using large language models (LLMs) to capture semantic data properties. On the other hand, SemantiPack performs compression at the data field level in RWD using RWD Profile to achieve higher compression ratios. Experimental results demonstrate up to 23.2% improved compression rate for JSON and 19.3% for CSV compared to conventional methods while maintaining a faster or equivalent processing speed compared to conventional methods. Furthermore, SemantiPack supports lossy compression for applications prioritizing storage over precision. This research not only improves compression efficiency but also establishes a scalable solution for automated analysis and sustainable data utilization, paving the way for advancements in RWD management.

DOI： 10.1109/ACCESS.2025.3583829

Real-time Activity-Aware Video Streaming While Preserving Privacy 査読有り

Shimura, K; Kano, K; Hossain, T; Katayama, S; Urano, K; Taguchi, S; Deguchi, H; Sakai, H; Yonezawa, T; Kawaguchi, N

COMPANION OF THE 2025 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING, UBICOMP COMPANION 2025 頁： 236 - 240 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ubicomp Companion 2025 Companion of the 2025 ACM International Joint Conference on Pervasive and Ubiquitous Computing

We present ActStream, a remote communication system that selectively shares the user and objects relevant to their current activities. By combining vision-language models and real-time segmentation, ActStream detects and highlights only activity-relevant elements, enhancing awareness while preserving privacy. The system identifies key objects through user focus or interaction, synthesizes them with the user's image, and streams the result to a remote partner. ActStream aims to provide useful context without exposing unnecessary information, highlighting the potential of selective sharing in privacy-sensitive remote collaboration.

DOI： 10.1145/3714394.3754399

Quantifying Work-Stress in Surgical Intensive Care Unit Nurses: A Multimodal Activity-Aware Physiological Analysis 査読有り Open Access

Hossain, T; Rahaman, MS; Yamashita, K; Kono, A; Guowei, M; Oyama, S; Yonezawa, T

PROCEEDINGS OF THE 2025 ACM INTERNATIONAL SYMPOSIUM ON WEARABLE COMPUTERS, ISWC 2025 Part of 213533 巻頁： 127 - 133 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings International Symposium on Wearable Computers Iswc

Work-related stress in critical care settings threatens both nurse well-being and patient safety. While understanding and accurately quantifying this stress is important in these high-stakes environments, it remains a significant challenge due to the inherent complexity of clinical workflows and the wide variability in individual stress responses. To address this, our study investigates how physiological signals captured via wearable sensors correspond to nurses' perceived stress during Surgical Intensive Care Unit (SICU) activities. We captured physiological indicators of stress using two wearable devices: a wrist-worn EmbracePlus and an upper arm-worn Apple Watch as nurses engaged in a range of simulated SICU activities. These physiological signals were then synchronized with perceived stress, captured using validated self-report questionnaires. Our analysis shows significant variations in stress responses across different SICU activities, with elevated heart rate variability (HRV) and increased perceived stress observed during physically demanding activities such as ''Patient Transfer''. A machine learning model trained on combined physiological and contextual features related to nursing activities achieved 80% accuracy under leave-one-participant-out cross-validation, demonstrating the potential of wearable sensing for activity-aware stress recognition. Principal Component Analysis (PCA) further showed that the wrist-worn sensor produced more structured and separable HRV patterns than the arm-worn device, suggesting the critical role of sensor placement and device characteristics in reliable stress assessment.

DOI： 10.1145/3715071.3750406

Mitigating Latency Effects in VR180 Teleoperation via Virtual Robotic Arm Overlay 査読有り

Tsutsui S., Watanabe K., Usami R., Gushi Y., Watanabe Y., Shimura K., Hayashida N., Jimenez F., Urano K., Yonezawa T., Kawaguchi N.

15th International Conference on Mobile Computing and Ubiquitous Networking Icmu 2025 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：15th International Conference on Mobile Computing and Ubiquitous Networking Icmu 2025

Many studies have investigated remote robotic arm operation systems using virtual reality environments. However, conventional VR teleoperation systems suffer from communication latency, which makes it difficult for operators to receive immediate visual feedback of the robot's posture. This mismatch between input and visual feedback may increase cognitive and psychological load and degrade task performance. We propose a teleoperation system that overlays a virtual robotic arm to provide immediate visual feedback of user operation prior to receiving the delayed video from the physical robotic arm. By superimposing a virtual robotic arm on the stereo video, the system enables operators to simultaneously maintain immersion in the remote environment and perceive the input posture of the robotic arm. We evaluated information presentation methods through remote robotic arm task experiments in VR and user feedback. The results confirmed that, under high-latency conditions, the virtual robotic arm display reduced operator anxiety and helped maintain confidence during teleoperation.

DOI： 10.23919/ICMU65253.2025.11219125

MetaUniTour: Enhancing Engagement and Intercultural Understanding through A Metaverse Tourism Platform 査読有り

Matsumoto K., Watanabe Y., Shimura K., Hayashida N., Katayama S., Urano K., Kawaguchi N., Aoki S., Leleito E., Yonezawa T.

Proceedings 2025 International Conference on Metaverse Computing Networking and Applications Metacom 2025 頁： 125 - 130 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings 2025 International Conference on Metaverse Computing Networking and Applications Metacom 2025

We propose "MetaUniTour", a remote tourism platform designed to address key limitations in conventional Metaverse-based tourism, including perceptual and experiential asymmetries between tourists and hosts, the lack of collaborative engagement due to individualized exploration and high barriers to participation. MetaUniTour is structured around three core design principles: (1) spatial design that creates "mixed spaces"integrating cultural elements from both tourists and hosts; (2) experience design based on semi-structured, group-oriented activities that balance individual autonomy and collective participation; and (3) a browser-based, device-independent system architecture that ensures broad accessibility. A two-month field deployment, "Reality of Kenya,"virtually connected Higashiyama Zoo in Nagoya, Japan, with Kenya's Maasai Mara and attracted 3,615 participants. A follow-up survey answered by 66 people revealed that over 60% perceived spatial integration between the two locations, also participants found the experience enjoyable and felt a sense of unity through experienced intercultural exchanges. Our findings demonstrate that MetaUniTour offers an effective design framework for fostering symmetrical cultural exchange and immersive shared experiences with any devices, suggesting promising potential for future applications in tourism, education, and cross-cultural communication.

DOI： 10.1109/MetaCom65502.2025.00028

Life Pattern-Based Human Attribute Estimation Using Only GPS Data 査読有り Open Access

Shoji, K; Terashima, H; Tamura, N; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

IEEE ACCESS 13 巻頁： 131803 - 131822 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Access

Analysis of large-scale GPS data enables the summarization and structuring of human mobility characteristics, providing insights into residents' behavior patterns. However, existing methods analyze sequences of individual-derived stay labels, such as home or workplace, which do not accurately reflect actual area functions and can fail to distinguish individuals based on differences in workplaces. This limitation arises because annotating stay locations and purposes in GPS data is challenging due to the complexity of urban structures and constraints on data quality. In this study, we propose ArLPH, a framework that takes only GPS data as input, models mobility from the perspective of 'when and what types of places he/she visited,' and enables the interpretation of life patterns. ArLPH consists of two modules: 'Area Modeling,' which represents urban areas based on usage patterns, and 'Human Modeling,' which represents individuals based on behavior patterns. By the processing flow of area modeling to human modeling, it becomes possible to analyze human mobility while considering area characteristics. Through an evaluation of a large-scale, real-world GPS dataset collected from tens of thousands of smartphone users, we demonstrate that ArLPH enables the characterization of individuals based on their life patterns and estimates attributes such as occupation (e.g., office workers or homemakers) and lifestyle (e.g., those who work frequently on weekends).

DOI： 10.1109/ACCESS.2025.3591811

Feel the Pain: An Interpretable Multimodal Approach for Physiological Signal-Based Pain Detection 査読有り

Tazin, T; Hossain, T; Yamashita, K; Kinoshita, T; Tag, B; Oyama, S; Yonezawa, T; Salim, F

COMPANION PUBLICATION OF THE 27TH INTERNATIONAL CONFERENCE ON MULTIMODAL INTERACTION, ICMI 2025 COMPANION 頁： 100 - 108 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Icmi 2025 Companion Publication of the 27th International Conference on Multimodal Interaction

Pain assessment is essential in clinical settings, but remains largely subjective, relying on verbal self-reports that are impractical for non-communicative patients. In this study, we propose an interpretable multimodal approach for automatic pain detection using physiological signals. Leveraging 65 participants (23 female, 42 male) multimodal data from the AI4Pain 2025 challenge, we systematically explore the contributions of multiple sensor modalities, Electrodermal Activity (EDA), Blood Volume Pulse (BVP), Respiration (RESP), and Peripheral Oxygen Saturation (SpO<inf>2</inf>) to classify pain into No Pain, Low Pain, and High Pain categories. After careful pre-processing and feature extraction, XGBoost outperformed other machine learning and deep learning models. In particular, the combination of only EDA and BVP features achieved 80% validation accuracy. In addition, the model using combined EDA and BVP features achieved high classification accuracy across all pain levels, particularly for High Pain (AUC = 0.92) and No Pain (AUC = 0.96), demonstrating strong discriminative ability. Using all modalities, the XGBoost model achieved a test accuracy of 60.92%, marking an 8.62% improvement over the multimodal test baseline. Notably, our model outperformed the baseline results across all modalities on both the validation and test sets. Our model also incorporates HRV features derived from BVP and EDA emphasizes interpretability through analysis of permutation feature importance. The results demonstrate that multimodal physiological data, when processed effectively, enable accurate and explainable pain detection, a step toward real-time, deployable pain monitoring systems in healthcare.

DOI： 10.1145/3747327.3764786

Efficient Edge AI based Annotation and Detection Framework for Logistics Warehouses 査読有り

Mori, Y; Asai, Y; Higashiura, K; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

2025 IEEE 22ND CONSUMER COMMUNICATIONS & NETWORKING CONFERENCE, CCNC 頁： 1 - 4 2025年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings IEEE Consumer Communications and Networking Conference Ccnc

As global logistics demand increases, improving the efficiency of warehouse operations has become critical. To achieve this, it's crucial to identify inefficient tasks and layouts by recognizing various warehouse conditions. To address these challenges, we've constructed a large-scale camera infrastructure to convert object positions and movements into data. However, transmitting all video data to the cloud results in significant data transmission and power consumption. Edge AI cameras analyze and extract video data locally, transmitting only essential information and significantly reducing them. Edge AI cameras require a low-computation, high-accuracy object detection model due to limited computational power and complex warehouse environments. Furthermore, the same object appears differently based on the camera's position and angle. Therefore, customizing models for each camera improves accuracy, but the annotation cost would be very high. In this study, we propose a method to perform part of the training data generation on the camera, reducing data transmission and improving annotation efficiency.

DOI： 10.1109/CCNC54725.2025.10976142

その他リンク： https://dblp.uni-trier.de/db/conf/ccnc/ccnc2025.html#MoriAHKUYK25

Discovering Emerging Urban Hotspots Using Satellite Imagery and Human Mobility Data 査読有り

Tillayeva, N; Terashima, H; Tamura, N; Shoji, K; Hossain, T; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

DISTRIBUTED, AMBIENT AND PERVASIVE INTERACTIONS, DAPI 2025, PT II 15803 巻頁： 110 - 120 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Lecture Notes in Computer Science

Identifying and prioritizing newly emerging points of interest in urban areas is critical for enhancing citizens’ exploration and engagement with their cities. However, traditional discovery channels—such as local media or social networks—often fail to capture real-time urban transformations comprehensively. In this paper, we propose a data-driven methodology that integrates satellite-based change detection with human mobility analytics to reveal, rank, and recommend newly formed or transformed urban hotspots. Specifically, we employ Synthetic Aperture Radar (SAR) Rapid and EAsy Change detection in radar TIme-series by Variation coefficient (REACTIV) to detect structural changes in satellite imagery, and we combine these insights with Area2Vec embeddings derived from BlogWatcher data (2019–2024) to measure shifts in human movement patterns. Our experiments on the rapidly evolving city of Nagoya demonstrate a strong correlation between physical urban transformations and mobility changes, enabling us to pinpoint and prioritize locations with the highest potential appeal. This approach has broad applications for city residents, tourists, businesses, and urban planners by facilitating more informed and timely exploration of dynamic urban spaces.

DOI： 10.1007/978-3-031-92980-9_7

Digitization Methods for a Logistics Warehouse Towards Digital Twin-Driven Optimization 査読有り

Kawaguchi, N; Asai, Y; Kano, K; Takaki, K; Mori, Y; Suzuki, Y; Watanabe, K; Gushi, Y; Katayama, S; Urano, K; Yonezawa, T; Hashiguchi, S

2025 IEEE INTERNATIONAL CONFERENCE ON SMART COMPUTING, SMARTCOMP 頁： 186 - 193 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings 2025 IEEE International Conference on Smart Computing Smartcomp 2025

The rapid growth of e-commerce, rising consumer expectations, and labor shortages in Japan pose challenges for logistics warehouse optimization. While automation has advanced outbound operations, inbound processes remain inefficient. This study presents a comprehensive approach to digitizing and optimizing large-scale logistics warehouses, with a case study at TRUSCO NAKAYAMA Corp. in partnership with Nagoya University. Key technologies include a large-scale camera array, multi-camera object tracking, and smartphone-based task estimation. Our contributions include real-time tracking of personnel and packages, cooperative annotation for improved object recognition, and synthetic data augmentation. Additionally, truck berth analysis and indoor localization enhance operational efficiency. To optimize worker shifts and warehouse layout, we apply Factorization Machine Quantum Annealing (FMQA), achieving a 37.4% reduction in lead times and a 14.3% decrease in labor hours. A visualization tool enables warehouse operators to make data-driven decisions. This research demonstrates the potential of digital transformation in logistics and provides a scalable framework for broader industry adoption.

DOI： 10.1109/SMARTCOMP65954.2025.00035

CorVS: Person Identification via Video Trajectory-Sensor Correspondence in a Real-World Warehouse 査読有り Open Access

Kano K., Mori Y., Katayama S., Urano K., Yonezawa T., Kawaguchi N.

Proceedings of the 15th International Conference on Indoor Positioning and Indoor Navigation Ipin 2025 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of the 15th International Conference on Indoor Positioning and Indoor Navigation Ipin 2025

Worker location data is key to higher productivity in industrial sites. Cameras are a promising tool for localization in logistics warehouses since they also offer valuable environmental contexts such as package status. However, identifying individuals with only visual data is often impractical. Accordingly, several prior studies identified people in videos by comparing their trajectories and wearable sensor measurements. While this approach has advantages such as independence from appearance, the existing methods may break down under real-world conditions. To overcome this challenge, we propose CorVS, a novel data-driven person identification method based on correspondence between visual tracking trajectories and sensor measurements. Firstly, our deep learning model predicts correspondence probabilities and reliabilities for every pair of a trajectory and sensor measurements. Secondly, our algorithm matches the trajectories and sensor measurements over time using the predicted probabilities and reliabilities. We developed a dataset with actual warehouse operations and demonstrated the method's effectiveness for real-world applications.

DOI： 10.1109/IPIN66788.2025.11213222

Clustering-Based Multitask Classification for Predictive Consumer Behavior Modeling 査読有り

Park, S; Hossain, T; Yonezawa, T; Kawaguchi, N

2025 INTERNATIONAL CONFERENCE ON ACTIVITY AND BEHAVIOR COMPUTING, ABC 2025年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：2025 International Conference on Activity and Behavior Computing Abc 2025

Understanding customers and segmenting in an appropriate way play a vital role in business operations and effective marketing strategies. It helps target specific customer groups for increased engagement and profit. However, traditional approaches often struggle to predict future purchase patterns, especially when user data is sparse and fragmented across multiple sources. This research proposes a novel clustering-based multitask classification method to address these limitations. We integrated the Recency, Frequency Monetary (RFM) model to cluster customers based on their purchase patterns from various purchase categories (tickets, merchandise, fan club membership) to create a more comprehensive understanding of loyalty for a professional basketball team in Japan. The proposed model predicts a customer’s segment across all purchase categories, implying the potential relationships between each category. Initial results demonstrate that the model effectively analyzes purchase behaviors, offering actionable insights to enhance marketing strategies.

DOI： 10.1109/ABC64332.2025.11118620

共通潜在空間を介した多様な都市データのクロスモーダル分析手法 Open Access

田村直樹, 寺島青, 庄子和之, 片山晋, 浦野健太, 米澤拓郎, 河口信夫

第84回UBI研究会 2024年11月

時系列滞在頻度傾向と移動傾向を組み合わせた移動先予測手法 Open Access

寺島青, 髙木峻, 田村直樹, 庄子和之, Tahera Hossain, 片山晋, 浦野健太, 米澤拓郎, 河口信夫

第84回UBI研究会 2024年11月

EngagedSync ： MR 共有空間内ユーザの相互状況理解向上のための適応的な周辺環境情報抽出・転送システム Open Access

志村魁哉, 加納一馬, Tahera Hossain, 片山晋, 浦野健太, 米澤拓郎, 河口信夫

第84回UBI研究会 2024年11月

自律移動ロボットを用いた人流計測のための探索経路生成査読有り Open Access

下里浩昇, 片山晋, 浦野健太, 米澤拓郎, 河口信夫

情報処理学会論文誌 65 巻 ( 10 ) 頁： 1511 - 1522 2024年10月

DiverCityMeter: GPSデータのみを用いた生活パターン多様性から見る COVID-19 の影響分析に関する研究

庄子和之，寺島青，田村直樹，片山晋，浦野健太，米澤拓郎，河口信夫

第112回MBL研究会 2024年9月

遠隔MRロボットアーム制御によるスマートな3Dスキャンシステム

宇佐美龍斗、渡邉企章、具志祐希、筒井秀斗、渡辺圭貴、加納一馬、相川雄也、志村魁哉、林田望海、浦野健太、米澤拓郎、河口信夫

第29回日本バーチャルリアリティ学会大会 2024年9月

スマートフォン・全方位カメラを用いた作業効率化のための半自動天伏図作成システム

小濱大輝，永田吉輝，安武和成，酒見和幸，片山晋，浦野健太，米澤拓郎，河口信夫

令和6年度空気調和・衛生工学会大会 2024年9月

Autoware-in-Forest: 森林環境における丸太運搬フォワーダの自動走行

浦野健太, 米澤拓郎, 河口信夫

第42回日本ロボット学会学術講演会（RSJ2024） 2024年9月

3次元点群解析に基づくロボット移動可能領域の半自動認識手法

相川雄也，片山晋，浦野健太，米澤拓郎，河口信夫

第42回日本ロボット学会学術講演会（RSJ2024） 2024年9月

エッジ音声処理とCAN通信を用いた多数接続可能な発話方向推定システム

市川　直人，加納　一馬，永田　吉輝，片山　晋，浦野　健太，米澤　拓郎，河口　信夫

電気・電子・情報関係学会東海支部連合大会 2024年8月

物流倉庫におけるスマートフォンを用いた作業者のタスク認識

渡邊企章，加納一馬，片山晋，浦野健太，米澤拓郎，河口信夫

電気・電子・情報関係学会東海支部連合大会 2024年8月

マルチカメラによるオクルージョン回避を用いた荷物置き場の占有状況検出

具志祐希，加納一馬，片山晋，浦野健太, 米澤拓郎, 河口信夫

電気・電子・情報関係学会東海支部連合大会 2024年8月

天伏図自動復元のための設備位置・形状アライメント手法

小濱大輝，永田吉輝，安武和成，片山晋，浦野健太，米澤拓郎，河口信夫

第42回電気設備学会全国大会 2024年8月

アノテーションロスを克服するラベル付き画像セグメントの合成によるデータ拡張

加納一馬，森裕輝，東浦圭亮，Tahera HOSSAIN，片山晋，浦野健太，米澤拓郎，河口信夫

画像電子学会年次大会（MCC2024） 2024年8月

NSP-BERT：滞在時間を考慮に入れた効率的なNext Stay予測手法査読有り

寺島青, 田村直樹, 庄子和之, 片山晋, 浦野健太, 米澤拓郎, 河口信夫

マルチメディア，分散，協調とモバイル(DICOMO2024)シンポジウム頁： 1531 - 1537 2024年6月

エッジAI向け物体検出モデル作成におけるアノテーション効率化手法査読有り

森裕輝, 浅井悠佑, 東浦圭亮, 片山晋, 浦野健太, 米澤拓郎, 河口信夫

マルチメディア，分散，協調とモバイル(DICOMO2024)シンポジウム頁： 292 - 301 2024年6月

効率と安全を考慮したコストマップを用いた人と協調する倉庫内配送ロボットナビゲーション査読有り Open Access

浅井悠佑, 片山晋, 浦野健太, 米澤拓郎, 河口信夫

情報処理学会論文誌 65 巻 ( 6 ) 頁： 1033 - 1048 2024年6月

スマートフォンを用いた歩行者自律航法のための水平加速度に基づいた歩き方の違いに頑健な進行方向推定査読有り Open Access

加納一馬，吉田拓人，浦野健太，米澤拓郎，河口信夫

情報処理学会論文誌 65 巻 ( 6 ) 頁： 1001 - 1017 2024年6月

プライバシフリーな通過情報を用いた大規模施設における移動経路推定手法査読有り Open Access

永田吉輝, 浦野健太, 米澤拓郎, 河口信夫

情報処理学会論文誌 65 巻 ( 6 ) 頁： 1018 - 1032 2024年6月

BERTに基づく都市における移動エリア予測手法の提案 Open Access

寺島青, 田村直樹, 庄子和之, 片山晋, 浦野健太, 米澤拓郎, 河口信夫

第119回MBL研究会 2024年5月

SafariCast:サファリ地域における動物のストレスを考慮した位置情報共有システム Open Access

志村魁哉, 片山晋, 浦野健太, Emanuel Leleito, 米澤拓郎, 河口信夫

第82回UBI研究会 2024年5月

量子アニーリングとブラックボックス最適化を用いた倉庫内業務最適化 Open Access

髙木魁利，瀧上昂希，片山晋，浦野健太，米澤拓郎，河口信夫

第82回UBI研究会 2024年5月

Wildlife Spotting and Sharing System for Kenyan Safari Game Drives 査読有り

Shimura K., Katayama S., Urano K., Leleito E., Yonezawa T., Kawaguchi N.

ACM International Conference Proceeding Series 頁： 150 - 153 2024年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：ACM International Conference Proceeding Series

Traditional wildlife spotting on Kenyan Safari Game Drives, rooted in visual scouting and sporadic communication, encounters challenges in animal detection efficiency and environmental preservation. In light of rejuvenating post-pandemic tourism and enhancing safari experiences, this study proposes a wildlife spotting and sharing system. The methodology melds wildlife detection and sharing technologies, anchored by three core principles: preserving chance of encounters, regulating information accessibility, and endorsing environmental conservation. The system architecture employs sensors, GPS, and tablet terminals for real-Time data acquisition, animal identification, and information propagation. This approach aims to nurture an engaging, efficient, and eco-conscious wildlife spotting and sharing experience, potentially setting a benchmark for sustainable wildlife tourism in similar wildlife-rich regions.

DOI： 10.1145/3627050.3630727

360 Robot Hand System for Omni-directional Interaction by Multiple Users 査読有り

Watanabe Y., Hayashida N., Katayama S., Urano K., Yonezawa T., Kawaguchi N.

ACM International Conference Proceeding Series 頁： 295 - 299 2024年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：ACM International Conference Proceeding Series

The rise of diverse digital environments like digital twins and the metaverse emphasizes the importance of telepresence methods for linking users across different spaces. These methods aim to boost communication and services between these spaces. This paper introduces RHS360, a 360-degree robot hand system designed for inter-spatial communication. RHS360 ensures the robot hand aligns precisely with the user in cyberspace, adjusting based on the user's movements in the virtual realm. This enables the robot hand not only to aid communication and gestures but also to convey crucial social cues, enhancing the overall communication experience. Additionally, a user survey was conducted, revealing that observing the robot hand's movements significantly improved understanding their partner's thoughts and fostered a greater sense of intimacy. These findings suggest that the proposed method enhances communication between different spaces.

DOI： 10.1145/3627050.3631573

360 Robot Hand Interaction for Group Telepresence with MetaPo 査読有り

Watanabe Y., Hayashida N., Katayama S., Urano K., Yonezawa T., Kawaguchi N.

ACM International Conference Proceeding Series 頁： 183 - 185 2024年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：ACM International Conference Proceeding Series

In this demonstration paper, we present the RHS360, a 360-degree robotic hand system designed to facilitate communication across spatial domains. The RHS360 is capable of providing continuous alignment between the user's position in the cyber space and the robotic hand's position. Furthermore, it allows users in the cyber space to reposition the robotic hand to accommodate their movements within the space. Our system not only enables communication, including gestures, through the use of the robotic hand but also provides essential social cues that are crucial in effective communication.

DOI： 10.1145/3627050.3630730

Theme 4: Infrastructure and Service Resilience for Smart Society 査読有り

Stylios, C; Yonezawa, T

ERCIM NEWS ( 136 ) 頁： 10 - 10 2024年1月

Towards a Real-Time and Energy-Efficient Edge AI Camera Architecture in Mega Warehouse Environment 査読有り

Asai, Y; Mori, Y; Higashiura, K; Yokoyama, K; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

2024 IEEE 3RD REAL-TIME AND INTELLIGENT EDGE COMPUTING WORKSHOP, RAGE 2024 頁： 12 - 17 2024年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings 2024 IEEE 3rd Real Time and Intelligent Edge Computing Workshop Rage 2024

In response to the exponential growth of e-commerce, our paper addresses the transformation of warehouse operations towards mega warehouses, necessitating advanced digitalization. We focus on the integration and optimization of edge AI technologies to enhance operational efficiency, accuracy, and timeliness in logistic warehouses. We propose a novel edge AI architecture tailored to the processes of warehouse operations ensuring that digitalization aligns with operational workflows. Utilizing a real-world warehouse equipped with over 60 cameras as a testbed, we demonstrate the practical application and benefits of edge computing in logistics. Our experiments have shown significant potential improvements in energy efficiency and timeliness, crucial metrics for the successful integration of edge AI technologies in warehouses.

DOI： 10.1109/RAGE62451.2024.00010

Balancing Excitement and Environmental Conservation in Information Dissemination for Safari Game Drives 査読有り

Shimura, K; Katayama, S; Urano, K; Leleito, E; Yonezawa, T; Kawaguchi, N

DISTRIBUTED, AMBIENT AND PERVASIVE INTERACTIONS, PT I, DAPI 2024 14718 巻頁： 311 - 323 2024年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

In the context of Kenyan Safari Game Drives, which traditionally rely on visual scouting and intermittent communication, challenges arise regarding the effectiveness of animal detection and environmental conservation. Consequently, animals experience stress, and tourists encounter difficulties in observation due to obstruction by other visitors. Addressing these challenges involves maintaining animal welfare while enhancing tourist satisfaction. To revitalize post-pandemic tourism and enrich safari experiences, this study proposes a wildlife spotting and sharing system. The proposed method integrates wildlife detection and sharing technologies guided by three core principles: preserving encounter serendipity, regulating information access, and promoting environmental conservation. The system architecture incorporates sensors, GPS, and tablet terminals to facilitate real-time data collection, animal identification, and information dissemination. This approach aims to foster an engaging, efficient, and environmentally conscious wildlife spotting and sharing experience, potentially establishing a model for sustainable wildlife tourism in comparable wildlife-rich regions.

DOI： 10.1007/978-3-031-59988-0_19

Demo: Assisting System for Creating Ceiling Plan Using a Video from a Smatrphone 査読有り Open Access

Kohama, D; Nagata, Y; Yasutake, K; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

PROCEEDINGS OF THE 2024 THE 22ND ANNUAL INTERNATIONAL CONFERENCE ON MOBILE SYSTEMS, APPLICATIONS AND SERVICES, MOBISYS 2024 頁： 620 - 621 2024年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Mobisys 2024 Proceedings of the 2024 22nd Annual International Conference on Mobile Systems Applications and Services

We present an assisting system for creating a ceiling plan. Conventional methods of creating a ceiling plan are time-consuming and high-cost. Our system requires only two inputs from a user and outputs the panoramic ceiling image that shows the whole ceiling surface. The system detects the ceiling fixtures and depicts them seamlessly for a reliable resulting image. We confirmed the possibility of assisting in creating a ceiling plan with our system through the experiment.

DOI： 10.1145/3643832.3661847

その他リンク： https://dblp.uni-trier.de/db/conf/mobisys/mobisys2024.html#KohamaNYKUYK24

Poster: Sustainable Data Management Flow for Spatio-Temporal Datasets 査読有り Open Access

Nagata, Y; Kohama, D; Watanabe, Y; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

PROCEEDINGS OF THE 2024 THE 22ND ANNUAL INTERNATIONAL CONFERENCE ON MOBILE SYSTEMS, APPLICATIONS AND SERVICES, MOBISYS 2024 頁： 688 - 689 2024年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Mobisys 2024 Proceedings of the 2024 22nd Annual International Conference on Mobile Systems Applications and Services

Spatio-temporal data is utilized in various fields, but its scale is continuously growing, leading to significant labor and costs in storage and processing. Therefore, the value that can be derived from spatio-temporal data is diluted due to management costs. We propose a new data management flow using various metadata and common programs for spatio-temporal data utilization. Traditionally, various spatio-temporal data processing have been implemented and processed according to each spatio-temporal data. We defined spatio-temporal data structure metadata and performed data processing based on metadata using a common data processing program. Furthermore, we automated the generation of data structure metadata by combining our data skeleton recognition method and generative AI model. Using this flow, we expect to improve the sustainability of utilizing spatio-temporal data.

DOI： 10.1145/3643832.3661423

その他リンク： https://dblp.uni-trier.de/rec/conf/mobisys/2024

Semi-Automated Framework for Digitalizing Multi-Product Warehouses with Large Scale Camera Arrays 査読有り

Higashiura, K; Yokoyama, K; Asai, Y; Shimosato, H; Kano, K; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

2024 IEEE INTERNATIONAL CONFERENCE ON PERVASIVE COMPUTING AND COMMUNICATIONS, PERCOM 頁： 98 - 105 2024年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：2024 IEEE International Conference on Pervasive Computing and Communications Percom 2024

As global demand for logistics continues to grow, optimizing the automation and efficiency of distribution warehouse operations is of paramount importance. Digitalizing warehouse environments, which refers to the process of sensing the physical space and extracting meaningful information from the obtained data, offers a promising solution to this challenge. However, converting raw warehouse data, such as video footage captured inside the warehouse, into actionable metadata (e.g., tracking the movement paths of workers and products or analyzing the usage patterns of different warehouse locations) often necessitates significant human intervention. The rise of machine learning further complicates this, as it requires the manual preparation of extensive training datasets. In this paper, we introduce a framework that semi-automates the digitalization process in complex warehouse settings. This framework employs dense optical flow and representation learning to autonomously segment warehouse objects and cluster similar objects, thereby substantially cutting down on annotation costs. To evaluate our approach, we constructed a large-scale data collection platform with over 60 fixed cameras in a real-world logistics warehouse, and the video data from this platform was then applied to our framework. Our evaluations indicate that our method markedly reduces both the time and resources required for warehouse digitalization using the captured video data.

DOI： 10.1109/PERCOM59722.2024.10494498

Area Modeling using Stay Information for Large-Scale Users and Analysis for Influence of COVID-19. 査読有り

Kazuyuki Shoji, Shunsuke Aoki 0001, Takuro Yonezawa, Nobuo Kawaguchi

CoRR abs/2401.10648 巻 2024年

Unveiling Human Attributes through Life Pattern Clustering using GPS Data Only 査読有り

Shoji, K; Terashima, H; Tamura, N; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

32ND ACM SIGSPATIAL INTERNATIONAL CONFERENCE ON ADVANCES IN GEOGRAPHIC INFORMATION SYSTEMS, ACM SIGSPATIAL 2024 頁： 621 - 624 2024年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：32nd ACM Sigspatial International Conference on Advances in Geographic Information Systems ACM Sigspatial 2024

Clustering people by their life patterns is valuable in government and business fields. Existing studies often rely on semantic data such as Point of Interest or stay purpose. However, they have the problem that obtaining large datasets is difficult due to the need for annotation work. Some studies try to use only location data. However, they do not reveal the semantics of the area where visitors stay because they only label visited areas by significance according to duration and frequency of stay. In this paper, we propose a framework, LPSeL, for clustering people’s Life Patterns at a Semantic Level using only raw GPS location data. LPSeL is based on the idea that analyzing human mobility first requires understanding urban space. Therefore, it begins with area modeling, which models areas in a city based on people’s activities. Then, treating human mobility as a sequence of area representations makes it possible to model individuals by semantic-level characteristics of their life patterns. We showed that LPSeL is capable of estimating people’s attributes from their life patterns using a real-world dataset consisting of GPS data collected from tens of thousands of smartphone users.

DOI： 10.1145/3678717.3691309

Time-series Stay Frequency for Multi-City Next Location Prediction using Multiple BERTs 査読有り

Terashima, H; Takagi, S; Tamura, N; Shoji, K; Hossain, T; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

2ND ACM SIGSPATIAL INTERNATIONAL WORKSHOP ON THE HUMAN MOBILITY PREDICTION CHALLENGE, HUMOB-CHALLENGE 2024 頁： 5 - 9 2024年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：2nd ACM Sigspatial International Workshop on the Human Mobility Prediction Challenge Humob Challenge 2024

Human Mobility Prediction Challenge 2024 was organized to compare human future movement prediction methods using a unified dataset. The challenge focuses on human movement prediction in multiple cities with varying numbers of users. Many existing movement prediction methods train deep learning models using large-scale movement histories from cities and make predictions. While cities with large users have sufficient training data, smaller cities with fewer users may face challenges due to insufficient data, raising concerns about lower prediction accuracy. Additionally, it is difficult to treat stay locations between different cities’ movement histories due to differences in spatial area arrangement, making it challenging to share data across cities. To address this issue, we propose human movement prediction method that utilizes time-series stay frequency patterns, which can be commonly applied across different cities. This method demonstrated superiority in predicting movements in cities with fewer users compared to models trained and predicted using only the movement histories of the target city. Furthermore, the method achieved top 10 prediction accuracy in HuMob Challenge 2024.

DOI： 10.1145/3681771.3699909

Enhancing Group Telepresence Interaction through Seamless Inverse Panorama Projection on Spherical Display 査読有り

Hayashida, N; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

COMPANION OF THE 2024 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING, UBICOMP COMPANION 2024 頁： 286 - 289 2024年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ubicomp Companion 2024 Companion of the 2024 ACM International Joint Conference on Pervasive and Ubiquitous Computing

In recent years, advancements in telepresence technology have made remote communication and collaboration easier. MetaPo is a system that uses spherical displays to seamlessly integrate physical and digital interactions. However, conventional inverse panorama techniques face challenges such as image seams, coverage issues, and overlapping displays. To address these challenges, this study proposes an inverse panorama technique based on coordinate transformation, enhancing visual continuity and user experience. Additionally, evaluation methods necessary to demonstrate the effectiveness of the proposed method in improving the quality of remote communication have been devised. This research provides a novel solution to challenges in spherical display technology and paves the way for more immersive telepresence experiences.

DOI： 10.1145/3675094.3678369

Demonstration:Remote 3D Scanning with VR and Robotic Arm 査読有り

Usami, R; Watanabe, K; Gushi, Y; Tsutsui, S; Watanabe, Y; Kano, K; Aikawa, Y; Shimura, K; Hayashida, N; Urano, K; Yonezawa, T; Kawaguchi, N

COMPANION OF THE 2024 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING, UBICOMP COMPANION 2024 頁： 201 - 204 2024年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ubicomp Companion 2024 Companion of the 2024 ACM International Joint Conference on Pervasive and Ubiquitous Computing

Although VR headsets have gained widespread acceptance, their potential for real-world actuation remains underexplored. We propose a system that allows to work in VR space using a robotic arm and VR headset, focusing on 3D scanning as the task. The robotic arm is equipped with an RGB-D camera to achieve remote 3D scanning. This system enables immersive remote work and enhances the link between real space and VR space by reproducing the real objects into the VR space.

DOI： 10.1145/3675094.3677548

Composite Image Generation Using Labeled Segments for Pattern-Rich Dataset without Unannotated Target 査読有り Open Access

Kano, K; Mori, Y; Higashiura, K; Hossain, T; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

COMPANION OF THE 2024 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING, UBICOMP COMPANION 2024 頁： 507 - 512 2024年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ubicomp Companion 2024 Companion of the 2024 ACM International Joint Conference on Pervasive and Ubiquitous Computing

Although object detection technology using cameras offers potential for various applications, it incurs dataset creation costs to train new models where general-purpose models are ineffective, such as in industrial settings. We have previously developed a semi-automated annotation framework that employs optical flow and representation learning techniques to reduce human effort significantly. However, it was likely to cause unintended annotation omissions and mistakes compared to manual annotation. In this study, we propose a composite image generation approach to create omission-free and pattern-rich datasets. The proposed method synthesizes natural-looking images without unannotated targets by placing labeled foreground segments at their original positions on targetless background frames collected with the same fixed-point cameras. Evaluation with video footage in a logistics warehouse confirmed that improved dataset reliability led to higher model performance.

DOI： 10.1145/3675094.3678447

Additive Compositionality in Urban Area Embeddings Based on Human Mobility Patterns 査読有り

Tamura, N; Terashima, H; Shoji, K; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

32ND ACM SIGSPATIAL INTERNATIONAL CONFERENCE ON ADVANCES IN GEOGRAPHIC INFORMATION SYSTEMS, ACM SIGSPATIAL 2024 頁： 577 - 580 2024年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：32nd ACM Sigspatial International Conference on Advances in Geographic Information Systems ACM Sigspatial 2024

Understanding the characteristics of various urban areas is crucial for applications such as urban planning, tourism policies, market analysis, and infection control. Techniques for embedding areas as vectors in a latent space based on human mobility patterns are actively researched. Many of these area embedding methods define areas as points, grids, or polygons on a geospatial plane and then embed them. However, existing methods do not allow for mutual transformation between these forms and sizes after the initial embedding. Additionally, if the characteristics of an area change due to events such as the opening of new buildings, re-embedding is necessary. Meanwhile, the Word2Vec technique, a representative word embedding method, has a property called additive compositionality. This property allows for the arithmetic operation of word meanings through the arithmetic operations of word embeddings. In this paper, we propose a method to apply this property to existing area embedding techniques, leveraging it for practical tasks such as area shape transformation and searching for areas with trends change.

DOI： 10.1145/3678717.3691279

OpenUAS: Embeddings of Cities in Japan with Anchor Data for Cross-city Analysis of Area Usage Patterns. 査読有り

Naoki Tamura, Kazuyuki Shoji, Shin Katayama, Kenta Urano, Takuro Yonezawa, Nobuo Kawaguchi

CoRR abs/2407.19872 巻 2024年

スマートフォン・全方位カメラを用いた作業効率化のための半自動天伏図作成システム査読有り

小濱大輝, 永田吉輝, 安武和成, 酒見和幸, 片山晋, 浦野健太, 米澤拓郎, 河口信夫

空気調和・衛生工学会大会　学術講演論文集 2024.10 巻 ( 0 ) 頁： 485 - 488 2024年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人空気調和・衛生工学会

<p>建物の改修工事の際，現状の図面が必要となる．10年以上運用された建物では，図面がなかったり，あったとしても過去の改修を反映していなかったりする．天井設備が記載された天伏図の修正のために現地調査がよく行われる．しかし，天井設備の位置や種類を正確に確認するのは手間が掛かる．本研究では，天伏図作成の作業効率を高めるために，スマートフォン・全方位カメラで撮影した動画から，既存建物の天伏図を少ない作業時間で半自動的に作成するシステムを提案する．</p>

DOI： 10.18948/shasetaikai.2024.10.0_485

Performance Evaluation of KNIME Low Code Platform in Deep Learning Study and Optimal Hyperparameter Tuning 査読有り

Thongkhome P., Yonezawa T., Kawaguchi N.

IEEE Region 10 Annual International Conference Proceedings TENCON 頁： 1373 - 1376 2024年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Region 10 Annual International Conference Proceedings TENCON

A low-code platform is a software development environment that allows for the creation of applications through graphical user interfaces and configuration instead of traditional hand-coded computer programming. In this study, the application to classify a dataset of traffic sign images using the KNIME low-code deep learning development platform will be discussed to represents this software performance especial in term of model optimization processes. By creates the workflow to perform image preprocessing, create the CNN layer under KERAS sequential API and finding the best set of key hyperparameters among traditional KNIME build-in optimization algorithm including Brute force, Hill climbing, random search, Bayesian Optimization and black-box optimizer Optuna optimization algorithm under 3 types CNN architecture as simple CNN, Resnet-50 and VGG16 to classify traffic sign images. The result demonstrates that both grid search and random search optimization can be effective, while both Optuna and Bayesian optimization stands out as a powerful method due to its ability to efficiently explore the hyperparameter space and achieve superior results to meet 99% accuracy under simple CNN environment, but Optuna is significantly improve optimization times than Bayesian about 7 - 8 times. The KNIME low-code platform provides a user-friendly environment for developing and fine-tuning models to contribute the ongoing progress in machine learning and deep learning research development.

DOI： 10.1109/TENCON61640.2024.10903074

Trusted Inter-Reality基盤における利用主体に関するトラスト招待有り査読有り Open Access

金岡晃, 米澤拓郎

情報処理学会論文誌 64 巻 ( 12 ) 頁： 1590 - 1598 2023年10月

CrowdFlowTransformer: Capturing Spatio-Temporal Dependence for Forecasting Human Mobility 招待有り

Choya T, Tamura N, Katayama S, Urano K, Yonezawa T, Kawaguchi N

2023 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events, PerCom Workshops 2023 頁： 496 - 501 2023年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：2023 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events, PerCom Workshops 2023

Crowd flow forecasting is expected to have a wide range of applications such as human resource allocation, guidance design, marketing, disaster mitigation and congestion prediction for avoiding epidemic such as COVID-19. Crowd flow forecasting is challenging because it requires considering both the task of capturing the temporal dependency of data and capturing the spatial dependence. To address these challenges, in this paper, we propose a mechanism for referencing time-series features that are important for forecasting and incorporating graph convolution into Transformer, and we introduce CrowdFlowTransformer(CF-Transformer), a deep learning model based on Google's Transformer framework captures the Spatio-temporal dependency of time series. CF-Transformer captures the time series dependency by extracting important local time series from the past time series, inputting them to the decoder of Transformer, and encoding critical features into the model's input. We adapted CF-Transformer to a real-world crowd flow dataset. We evaluated it by comparing its forecasting accuracy with conventional models, and the results demonstrate that our model outperforms the conventional models.

DOI： 10.1109/PerComWorkshops56833.2023.10150301

Understanding Regional Characteristics Through EC Data Analysis 査読有り

Yamaguchi, K; Shoji, K; Tamura, N; Sakakura, N; Matsukura, Y; Hiranaga, Y; Shimomura, K; Urano, K; Yonezawa, T; Kawaguchi, N

DISTRIBUTED, AMBIENT AND PERVASIVE INTERACTIONS, DAPI 2023, PT I 14036 巻頁： 390 - 404 2023年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

The COVID-19 pandemic, which began in 2020, has changed people’s lives, and people are shopping more online. While the analysis of online shopping is becoming increasingly important, regional differences in consumption trends exist. This study proposes a data-driven regional modeling method based on EC purchase data to examine the regional characteristics of online shopping purchase trends. Using the proposed method, we quantified and visualized the degree of similarity of consumption trends among regions and the degree of dispersion of consumption trends within regions using approximately 300,000 lines of online shopping history for 3 years in Japan. As a result, we found that there was some disruption in the early stages of e-commerce for food products by region, while there was little difference in consumption trends among regions for daily necessities. In addition, for consumer durables and clothing, regional differences in consumption trends were confirmed in terms of the number of cars owned per capita, urbanization status, and other regional characteristics.

DOI： 10.1007/978-3-031-34668-2_26

Panoramic Ceiling Image Synthesis Method Prioritizing Fixture Outlines using an Omnidirectional Camera 査読有り

Kohama D., Nagata Y., Yasutake K., Urano K., Katayama S., Yonezawa T., Kawaguchi N.

2023 14th International Conference on Mobile Computing and Ubiquitous Network Icmu 2023 頁： 1 - 8 2023年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：2023 14th International Conference on Mobile Computing and Ubiquitous Network Icmu 2023

The manual creation of a ceiling plan consumes many human resources to confirm the current state of existing buildings for the renovation. Especially the positions and the types of existing fixtures are important. In this paper, we propose a synthesis method for a panoramic ceiling image using a video shot by an omnidirectional camera. We utilize a Visual SLAM method to map the positions of omnidirectional video frames including the ceiling. We prioritize the clear depiction of fixture outlines for easier identification of the types of ceiling fixtures. To draw clear fixture outlines in the resulting image, each fixture is referred from the single video frame that captures it most clearly. In the experiment, we collected an omnidirectional video in the indoor area of approximately 273 square meters with multiple rooms. We evaluated the synthesized image for positional accuracy of the ceiling fixtures, and our proposed method demonstrated higher accuracy compared to the baseline.

DOI： 10.23919/ICMU58504.2023.10412256

その他リンク： https://dblp.uni-trier.de/db/conf/icmu/icmu2023.html#KohamaNYUKYK23

Panoramic Ceiling Image Synthesis Method Prioritizing Fixture Outlines using an Omnidirectional Camera 査読有り

Kohama, D; Nagata, Y; Yasutake, K; Urano, K; Katayama, S; Yonezawa, T; Kawaguchi, N

2023 FOURTEENTH INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND UBIQUITOUS NETWORK, ICMU 2023年

Open-Domain Dialogue Management Framework Across Multiple Device for Long-Term Interaction 査読有り

Katayama, S; Hayashida, N; Urano, K; Yonezawa, T; Kawaguchi, N

HUMAN-COMPUTER INTERACTION, HCI 2023, PT III 14013 巻頁： 354 - 365 2023年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

This study explores the feasibility of dialogue systems with individuality capable of providing continuous and lasting assistance via a multiple device dialogue system. A framework has been devised to manage dialogue history, allowing for the use of a singular identity across various interfaces, including chatbots and virtual avatars. This framework can summarize and save the dialogue history, which can be utilized to generate responses. The impact of dialogue history sharing on users’ interactions with a particular character across various devices was assessed for naturalness, continuity, and reliability. The results indicate that dialogue history sharing can foster more natural and continuous conversations, thereby enhancing the potential for long-term support. This research advances the proposition that a digital agent endowed with a consistent identity across multiple devices can provide personalized and sustained support to users.

DOI： 10.1007/978-3-031-35602-5_25

その他リンク： https://dblp.uni-trier.de/db/conf/hci/hci2023-3.html#KatayamaHUYK23

Digitization and Analysis Framework for Warehouse Truck Berth 査読有り

Yokoyama, K; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

2023 FOURTEENTH INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND UBIQUITOUS NETWORK, ICMU 2023年

Digitization and Analysis Framework for Warehouse Truck Berth 査読有り

Yokoyama K., Katayama S., Urano K., Yonezawa T., Kawaguchi N.

2023 14th International Conference on Mobile Computing and Ubiquitous Network Icmu 2023 2023年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：2023 14th International Conference on Mobile Computing and Ubiquitous Network Icmu 2023

In distribution warehouses, various forms of data transformation are underway, such as the conversion of data related to receiving and inventory management. Distribution warehouses have designated areas known as truck berths, where trucks are parked for loading/unloading. While data collection is expected to enhance work efficiency at these truck berths, there is no data regarding the status of work in progress in the unloading space, and no system is in place to analyze the work. Consequently, it is unclear which tasks are problematic and how to enhance efficiency. To address this issue, this paper proposes a framework for analyzing the loading/unloading situation at truck berths with the objective of enhancing berth utilization efficiency and work efficiency. Specifically, we employed a fixed camera for object detection through instance segmentation. This approach enables us to understand the situation of trucks, unloading spaces, and workers. The training data were annotated using a large amount of real-world data, allowing for the measurement and analysis of the efficiency of loading/unloading operations. By calculating the amount of cargo based on the floor space, we assessed the efficiency of unloading operations per truck. Through the analysis of both efficient and inefficient operations, insights for enhancing work efficiency were provided.

DOI： 10.23919/ICMU58504.2023.10412228

Gait-Robust Heading Estimation Using Horizontal Acceleration for Smartphone-based PDR 査読有り

Kano K., Yoshida T., Katayama S., Urano K., Yonezawa T., Kawaguchi N.

Ceur Workshop Proceedings 3581 巻 2023年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ceur Workshop Proceedings

This study tackles heading estimation for Pedestrian Dead Reckoning (PDR) with smartphones. In dealing with changes in the holding posture of smartphones, it works to consider the relationship between sensor orientation and heading. However, the existing methods lack robustness to various gaits, such as sideways and backward walking. Therefore, we propose a novel method considering various spatiotemporal features of horizontal acceleration with deep learning. The proposed method calculates horizontal acceleration in the global coordinate system from measured acceleration, gravitational acceleration, and rotation vector. Then, it inputs the horizontal acceleration over a certain period into a deep neural network model and predicts the unit vector directed to the mean heading during that period. We created a dataset covering multiple gaits and evaluated the method using four models: Convolutional Neural Network (CNN), Bidirectional Long Short-Term Memory (BiLSTM), DualCNN-LSTM, and DualCNN-Transformer. Consequently, we found that the proposed method was more robust to gaits than the existing methods, with the DualCNN-LSTM and DualCNN-Transformer models achieving the highest accuracy.

Gait-Robust Heading Estimation Using Horizontal Acceleration for Smartphone-based PDR. 査読有り

Kazuma Kano, Takuto Yoshida, Shin Katayama, Kenta Urano, Takuro Yonezawa, Nobuo Kawaguchi

IPIN-WiP 2023年

Mobility Link XR: Interspace Interaction System in Electric Wheelchair 査読有り

Hayashida N., Shimosato H., Urano K., Yonezawa T., Kawaguchi N.

Communications in Computer and Information Science 1833 CCIS 巻頁： 314 - 320 2023年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Communications in Computer and Information Science

This research proposes a communication system called Mobility Link XR that connects physical space and cyberspace with mobility. Mobility Link XR is a system that enables remote users to view panoramic video from a 360-degree camera attached to a mobility vehicle in different space by wearing a VR device, and mobility users to view the remote user as an avatar by wearing an MR device. In this way, sharing space in three dimensions using XR enables a higher level of human communication. In this paper, we apply Mobility Link XR to an electric wheelchair and design two types of scenarios: an assistance mode that reproduces the positional relationship of communication in a conventional wheelchair, and a passenger mode that reproduces the positional relationship inside a vehicle, which is said to be a suitable distance for conversation. We also evaluated the reproducibility of communication in the wheelchair and the effectiveness of communication using the avatar. The results showed that the reproducibility of voice and emotion was highly evaluated and that the side-by-side positional relationship enabled higher quality communication as the avatar was more easily seen and felt present.

DOI： 10.1007/978-3-031-35992-7_43

その他リンク： https://dblp.uni-trier.de/db/conf/hci/hci2023-44.html#HayashidaSUYK23

ER-Chat: A Text-to-Text Open-Domain Dialogue Framework for Emotion Regulation 査読有り

Katayama, S; Aoki, S; Yonezawa, T; Okoshi, T; Nakazawa, J; Kawaguchi, N

IEEE TRANSACTIONS ON AFFECTIVE COMPUTING 13 巻 ( 4 ) 頁： 2229 - 2237 2022年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Transactions on Affective Computing

Emotions are essential for constructing social relationships between humans and interactive systems. Although emotional and empathetic dialogue generation methods have been proposed for dialogue systems, appropriate dialogue involves not only mirroring emotions and always being empathetic but also complex factors such as context. This paper proposes Emotion Regulation Chat (ER-Chat) as an end-to-end dialogue framework for emotion regulation. Emotion regulation is concerned with actions to approach appropriate emotional states. Learning appropriate emotion and intent when responding on the basis of the context of the dialogue enables the generation of more human-like dialogue. We conducted automatic and human evaluations to demonstrate the superiority of ER-Chat over the baseline system. The results show that inclusion of emotion and intent prediction mechanisms enable generation of dialogues with greater fluency, diversity, emotion awareness, and emotion appropriateness, which are greatly preferred by humans.

DOI： 10.1109/TAFFC.2022.3191973

テキスト対話システムにおける感情制御を伴う応答生成手法

片山晋, 米澤拓郎, 河口信夫

知能と情報 34 巻 ( 3 ) 頁： 568 - 578 2022年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：日本知能情報ファジィ学会

<p>感情を扱う対話システムはユーザの満足度向上や肯定的なインタラクション増加の効果が認められており，人間に寄り添うデジタルパートナーとしての役割が期待されている．対話システムがユーザの感情を認識し，対話システム自身の感情を表現するためには，対話の文脈から適切な感情を選択する感情制御が不可欠である．本研究では，応答時の適切な感情を推定する感情制御を伴うテキスト応答生成フレームワークを提案する．提案手法はユーザの発話テキストにおける意味的文脈と感情的文脈を考慮することで応答時の適切な感情を推定し，感情表現を含んだ応答テキストをニューラルネットワークを用いて生成する．実験では，対話生成の品質に対する評価指標を用いた自動評価と，クラウドソーシングサイトを用いて集めた100人の被験者による人手評価を行い，提案手法の有効性を示した．</p>

DOI： 10.3156/jsoft.34.3_568

Time-Sensitive Cooperative Perception for Real-Time Data Sharing over Vehicular Communications: Overview, Challenges, and Future Directions 査読有り

Aoki S., Yonezawa T., Kawaguchi N., Steenkiste P., Rajkumar R.R.

IEEE Internet of Things Magazine 5 巻 ( 2 ) 頁： 108 - 113 2022年6月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Internet of Things Magazine

Cooperative perception is a prospective application to improve road safety by having connected autonomous vehicles (CAVs) exchange their raw or processed sensor data over vehicular communications. Since CAVs heavily rely on sensor-based perception, including vision cameras, LiDARs, and radars, cooperative perception has an immense potential to improve road safety. At the same time, a variety of sensors and edge servers have been widely deployed in smart cities, and such sensors and servers might be able to empower CAVs on public roads. In this article, we comprehensively study such cooperative perception for overview, technical challenges, practical requirements, prospective system designs, current approaches, and future research directions. In particular, we focus on the time sensitivity of the cooperative perception frameworks, in which delays of computing and communications lead to detection errors. In addition, we comprehensively study sensor fusion frameworks and models to improve the detection accuracy and reliability of CAVs while avoiding information flooding and/or rumor spreading. Since network congestion might lead to packet collisions and/or delays, congestion control might be essential to use cooperative perception in practice. Finally, we discuss the technical and ethical challenges of using cooperative perception on public roads and conclude with future research directions.

DOI： 10.1109/iotm.001.2100143

深層学習を用いたIMU付きペンによる手書き文字認識査読有り Open Access

挺屋友幹, 永田吉輝, 東浦圭亮, 下里浩昇, 山口公平, 村井大地, 深谷愓也, 坂倉波輝, 戸出悠太, 浦野健太, 米澤拓郎, 河口信夫

人工知能学会研究会資料知識ベースシステム研究会 125 巻 ( 0 ) 頁： 03 2022年3月

<i>RobotNEST:</i> Toward a Viable Testbed for IoT-Enabled Environments and Connected and Autonomous Robots 査読有り

Aoki, S; Yonezawa, T; Kawaguchi, N

IEEE SENSORS LETTERS 6 巻 ( 2 ) 頁： 1 - 4 2022年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Sensors Letters

Autonomous mobile robots (AMRs), including delivery robots, security robots, and automated wheelchairs, are very promising for improving the quality of life, safety, mobility, and productivity. To deploy such sensor-rich AMRs in real-world society, we have to resolve not only technical challenges but also ethical and societal issues. In addition, since multiple companies are developing different types of AMRs individually, we have to design and develop practical platform to enable safe cooperation and collaboration before using them in the society. Hence, in this letter, we present a viable Nagoya Experimental Site and Testbed named <italic>RobotNEST</italic> developed at Nagoya City, Japan, where we leverage vehicular communications and edge/cloud computing technologies to develop cooperative mobile robots. RobotNEST provides real-world AMRs, experimental fields, learning kits, and infrastructural sensors and communications, including 5G private networks. We also introduce multiple developed applications at RobotNEST that enable safe cooperation for autonomous robots. Finally, we discuss the scalability and limitations of the testbed and conclude with future research directions.

DOI： 10.1109/LSENS.2021.3139624

A Data-Driven Approach for Online Pre-impact Fall Detection with Wearable Devices 査読有り

Yoshida, T; Kano, K; Higashiura, K; Yamaguchi, K; Takigami, K; Urano, K; Aoki, S; Yonezawa, T; Kawaguchi, N

SENSOR- AND VIDEO-BASED ACTIVITY AND BEHAVIOR COMPUTING, ABC 2021 291 巻頁： 133 - 147 2022年

記述言語：日本語掲載種別：論文集(書籍)内論文出版者・発行元：Smart Innovation Systems and Technologies

The implementation of wearable airbags to prevent fall injuries depends on accurate pre-impact fall detection and a clear distinction between activities of daily living (ADL) and them. We propose a novel pre-impact fall detection algorithm that is robust against ambiguous falling activities. We present a data-driven approach to estimate the fall risk from acceleration and angular velocity features and use thresholding techniques to robustly detect a fall before impact. In the experiment, we collect simulated fall data from subjects wearing an inertial sensor on their waist. As a result, we succeeded in significantly improving the accuracy of fall detection from 50.00 to 96.88%, the recall from 18.75 to 93.75%, and the specificity 81.25 to 100.00% over the baseline method.

DOI： 10.1007/978-981-19-0361-8_8

MetaPo: A Robotic Meta Portal for Interspace Communication 査読有り

Yonezawa, T; Hayashida, N; Przybilla, J; Kyono, Y; Urano, K; Kawaguchi, N

PROCEEDINGS OF SIGGRAPH 2022 POSTERS, SIGGRAPH 2022 頁： 28 - 2 2022年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings SIGGRAPH 2022 Posters

We introduce MetaPo, a mobile robot with spheric display, 360° media I/O and robotic hands for creating a unified model of interspace communication. MetaPo works as a portal between pairs of physical-physical, cyber-cyber and cyber-physical spaces to provide 1) panoramic communication for multiple remote users, and 2) immersive interspace migration with mobility functionality. The paper overviews our concept and first prototype of MetaPo with its hardware and software implementation.

DOI： 10.1145/3532719.3543255

その他リンク： https://dblp.uni-trier.de/db/conf/siggraph/siggraph2022posters.html#YonezawaHUPKK22

XR Communication System for Remote Control Wheelchairs 査読有り

Shimosato, H; Hayashida, N; Urano, K; Yonezawa, T; Kawaguchi, N

PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON THE INTERNET OF THINGS 2022, IOT 2022 頁： 219 - 223 2022年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM International Conference Proceeding Series

With the introduction of the IoT, communication is becoming more diverse. While IoT is becoming more and more widespread, there are some forms of human communication are being lost. The development of self-propelled robots has progressed, and electric and automated wheelchairs are also being utilized. A caregiver was originally required to operate a wheelchair. However, with the advent of IoT wheelchairs, wheelchairs can be operated by wheelchair users only, increasing convenience. On the other hand, wheelchairs have been used as a kind of communication between caregivers and wheelchair users, and the development of IoT wheelchairs has reduced the opportunities for communication between caregivers and wheelchair users. In this paper, we propose a method to reproduce communication scenarios in the following two scenarios using an IoT wheelchair and present the design and implementation of the prototype created.

DOI： 10.1145/3567445.3571111

その他リンク： https://dblp.uni-trier.de/db/conf/iot/iot2022.html#ShimosatoHUYK22

Synthetic People Flow: Privacy-Preserving Mobility Modeling from Large-Scale Location Data in Urban Areas 査読有り

Tamura, N; Urano, K; Aoki, S; Yonezawa, T; Kawaguchi, N

MOBILE AND UBIQUITOUS SYSTEMS: COMPUTING, NETWORKING AND SERVICES 419 巻頁： 553 - 567 2022年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering Lnicst

Recently, there has been an increasing demand for traffic simulation and congestion prediction for urban planning, especially for infection simulation due to the Covid-19 epidemic. On the other hand, the widespread use of wearable devices has made it possible to collect a large amount of user location history with high accuracy, and it is expected that this data will be used for simulation. However, it is difficult to collect location histories for the entire population of a city, and detailed data that can reproduce trajectories is expensive. In addition, such personal location histories contain private information such as addresses and workplaces, which restricts the use of raw data. This paper proposes Agent2Vec, a mobility modeling model based on unsupervised learning. Using this method, we generate synthetic human flow data without personal information.

DOI： 10.1007/978-3-030-94822-1_36

その他リンク： https://dblp.uni-trier.de/db/conf/mobiquitous/mobiquitous2021.html#TamuraUAYK21

Smartphone Localization with Solar-Powered BLE Beacons in Warehouse 査読有り

Kano, K; Yoshida, T; Hayashida, N; Asai, Y; Matsuyama, H; Katayama, S; Urano, K; Yonezawa, T; Kawaguchi, N

DISTRIBUTED, AMBIENT AND PERVASIVE INTERACTIONS, SMART ENVIRONMENTS, ECOSYSTEMS, AND CITIES, PT I 13325 巻頁： 291 - 310 2022年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

Workloads in logistics warehouses have been increasing to meet growing demand, and a labor shortage has become a problem. Utilizing information of laborer locations leads to an increase in productivity. We propose an integrated positioning method using solar-powered Bluetooth Low Energy (BLE) beacons. They are easy to install and maintenance-free since they can work without power sources. However, their advertisement interval depends on illuminance and is unstable. Moreover, there are many obstructions in warehouses, such as shelves and products, which cause signal attenuation, interference, and packet losses. We apply particle filters, map matching, and speed prediction with a neural network model to improve robustness and accuracy. We installed 94 beacons in a logistics warehouse. We evaluated the accuracy and found that our method is more accurate than a baseline method.

DOI： 10.1007/978-3-031-05463-1_21

その他リンク： https://dblp.uni-trier.de/db/conf/hci/hci2022-24.html#KanoYHAMKUYK22

大規模屋外施設におけるWi-Fiパケットセンサへの影響と利活用の検証査読有り Open Access

米澤拓郎

情報処理学会論文誌デジタルプラクティス 3 巻頁： 12 - 21 2022年

Deep Learning for Ballroom Dance Recognition: A Temporal and Trajectory-Aware Classification Model With Three-Dimensional Pose Estimation and Wearable Sensing 査読有り

Matsuyama, H; Aoki, S; Yonezawa, T; Hiroi, K; Kaji, K; Kawaguchi, N

IEEE SENSORS JOURNAL 21 巻 ( 22 ) 頁： 25437 - 25448 2021年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Sensors Journal

Dance performance recognition methods have been investigated and shown various applications such as picture-pose evaluation and synchronizing foot timing and direction. However, detailed analysis and feedback are still missing. To provide them, understanding the performance by component level is necessary. Specifically, we formulate it as a dance-figure classification problem using three-dimensional body joints and wearable sensors. Our model is based on long short-term memory (LSTM) and includes the temporal and trajectory-wise structure that uses the trajectory information in a timestep and the temporal masking module. As a result, we achieved 93% accuracy with our proposed method, which is highly overwhelming the baseline result (84.7%) and very close to the accuracy of the experienced dancers (93.6%). We have made the dataset of ballroom dance performance dataset open to researchers to develop the activity recognition field further.

DOI： 10.1109/JSEN.2021.3098744

An end-to-end ble indoor localization method using lstm

Urano K., Hiroi K., Yonezawa T., Kawaguchi N.

Journal of Information Processing 29 巻 ( 0 ) 頁： 58 - 69 2021年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

This paper proposes an indoor localization method for Bluetooth Low Energy (BLE) devices using an end-to-end LSTM neural network. We focus on a large-scale indoor space where there is a tough environment for wireless indoor localization due to signal instability. Our proposed method adopts end-to-end localization, which means input is a time-series of signal strength and output is the estimated location at the latest time in the input. The neural network in our proposed method consists of fully-connected and LSTM layers. We use a custom-made loss function with 3 error components: MSE, the direction of travel, and the leap of the estimated location. Considering the difficulty of data collection in a short preparation term, the data generated by a simple signal simulation is used in the training phase, before training with a small amount of real data. As a result, the estimation accuracy achieves an average of 1.92 m, using the data collected in GEXPO exhibition in Miraikan, Tokyo. This paper also evaluates the estimation accuracy assuming the troubles in a real operation.

DOI： 10.2197/ipsjjip.29.58

A Basic Study on Ballroom Dance Figure Classification with LSTM Using Multi-modal Sensor 査読有り

Matsuyama, H; Hiroi, K; Kaji, K; Yonezawa, T; Kawaguchi, N

ACTIVITY AND BEHAVIOR COMPUTING, ABC 2020 204 巻頁： 209 - 226 2021年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Smart Innovation Systems and Technologies

The paper presents a ballroom dance figure classification method with LSTM using video and wearable sensors. Ballroom dance is a popular sport among people regardless of age or sex. However, learning ballroom dance is very difficult for less experienced dancers as it has many complex types of “dance figures”, which is a completed set of footsteps. Therefore, we aim to develop a system to assist dance exercise which gives advice proper to each dance figure characteristic by recognizing dance figures correctly. While the major approach to recognize dance performance is to utilize video, we cannot simply adopt it for ballroom dance because the images of dancers overlap each other. To solve the problem, we propose a hybrid figure recognition method combining video and wearable sensors to enhance its accuracy and robustness. We collect video and wearable sensor data of seven dancers including acceleration, angular velocity, and body parts location change by pose estimation. After that, we preprocess them and put them into an LSTM-based deep learning network. As a result, we confirmed that our approach achieved an F1-score of 0.86 for 13 figure types recognition using the multi-modal sensors with trial-based fivefold cross-validation. We also performed user-based cross-validation, and sliding window algorithms. In addition, we compared the results with our previous method using Random Forest and also evaluated the robustness with occlusions. We found the LSTM-based method worked better than Random Forest with keypoint data. On the other hand, LSTM could not perform well with a sliding window algorithm. We consider the LSTM-based method would work better with a larger dance figure data, which is our next work. In addition, we will investigate how to solve occlusion problems with pose estimation.

DOI： 10.1007/978-981-15-8944-7_13

A Gaze-Based Unobstructive Information Selection by Context-Aware Moving UI in Mixed Reality 査読有り

Hayashida, N; Matsuyama, H; Aoki, S; Yonezawa, T; Kawaguchi, N

DISTRIBUTED, AMBIENT AND PERVASIVE INTERACTIONS, DAPI 2021 12782 巻頁： 301 - 315 2021年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

Mixed reality (MR) technology has been attracting attention in the automobile industry and logistics industry for work training and remote work support for newcomers. However, work support using MR technology has the problem that displaying too much information obstructs the user’s field of vision and rather interferes with the work. Therefore, it is necessary to detect the user’s intention and provide only the information that the user wants. In addition, the system should be able to detect naturally from the user’s behavior without interrupting the work, which the user explicitly selects. To solve these problems, in this paper, we use the user’s gaze to determine whether to display content by estimating whether or not they are looking at information. Another problem with gaze-based research in MR work support is that it is difficult to determine which space you are looking at in a space where virtual space and real space intersect. In order to overcome this problem, in this research, we grasp the user’s behavior from the movement of the user’s gaze, and we suggest a way to determine make the user interface (UI) the movement of the gaze that is unlikely to occur during that behavior to see if the user is looking at the UI. As a result of the experiment, we were able to promote the movement of gaze that is different from the characteristics of the movement of gaze during work with the proposed UI movement.

DOI： 10.1007/978-3-030-77015-0_22

その他リンク： https://dblp.uni-trier.de/db/conf/hci/hci2021-21.html#HayashidaMAYK21

Attention-Guidance Method Based on Conforming Behavior of Multiple Virtual Agents for Pedestrians 査読有り

Yoshida, N; Yonezawa, T

PROCEEDINGS OF THE 21ST ACM INTERNATIONAL CONFERENCE ON INTELLIGENT VIRTUAL AGENTS (IVA) 頁： 209 - 215 2021年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of the 21st ACM International Conference on Intelligent Virtual Agents Iva 2021

Humans observe the behavior of others and exhibit conforming behavior according to the situation. In this study, we propose a method to change the user's walking behavior and attention by changing the ratio of multiple virtual agents in action. We verified whether the attention to a poster on the wall and the walking behavior of a pedestrian changed according to the type and proportion of actions exhibited by multiple agents presented to a particular pedestrian. The results showed that the participant's walking speed and attention to the wall advertisement changed according to the agents' walking behavior, such as deceleration and stopping.

DOI： 10.1145/3472306.3478346

RGNet: Robust Gravity Estimation Neural Network for IMU-based Localization Using Smartphone 査読有り

Yoshida T., Urano K., Aoki S., Yonezawa T., Kawaguchi N.

13th International Conference on Mobile Computing and Ubiquitous Network Icmu 2021 頁： 1 - 8 2021年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：13th International Conference on Mobile Computing and Ubiquitous Network Icmu 2021

With the rapid development of Micro Electro-Mechanical Systems (MEMS) technologies, indoor navigation and localization with Inertial Measurement Unit (IMU) has been increasingly feasible. IMU-based indoor localization is a low-cost, energy-efficient, and infrastructure-free approach. There are various methods for it, and most of them require gravity estimation (e.g. the projection of angular velocity, the extraction of horizontal acceleration). In particular, when you use a smartphone, it changes the orientation of its IMU frequently, therefore the gravity estimation needs to be more robust to sensor orientation and its noise. In this paper, we propose a gravity estimation method based on deep learning called RGNet (Robust Gravity Estimation Neural Network) that is robust to sensor orientation and noise. We train an LSTM (Long short-term memory)-based neural network that estimates gravity from acceleration and angular velocity. Furthermore, for the problem that it is difficult to prepare the ground truth of gravity directly, we propose a method to train the gravity estimation neural network indirectly using the heading, taking advantage of the fact that the heading can be estimated from the gravity and angular velocity. The evaluation results show that the accuracy of the proposed method outperformed the baseline gravity estimation method (Android API, Low-pass filter, and Extended Kalman filter). We also confirmed that the accuracy of IMU-based localization is affected by the difference in gravity estimation methods.

DOI： 10.23919/ICMU50196.2021.9638853

その他リンク： https://dblp.uni-trier.de/db/conf/icmu/icmu2021.html#YoshidaUAYK21

RGNet: Robust Gravity Estimation Neural Network for IMU-based Localization Using Smartphone 査読有り

Yoshida, T; Urano, K; Aoki, S; Yonezawa, T; Kawaguchi, N

13TH INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND UBIQUITOUS NETWORK (ICMU2021) 2021年

Estimating and Leveraging Latent Social Demand Based on IoT sensors: An Empirical Study in a Large Public Park 査読有り

Nagata Y., Murai D., Katayama S., Urano K., Aoki S., Yonezawa T., Kawaguchi N.

13th International Conference on Mobile Computing and Ubiquitous Network Icmu 2021 頁： 1 - 8 2021年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：13th International Conference on Mobile Computing and Ubiquitous Network Icmu 2021

The continuously changing conditions of cities are now technically understandable in the information space through real-world sensing methods and analytical methods such as big data analysis and machine learning. On the other hand, it is currently difficult to estimate and present what the people in the city need (latent demand). This paper aims to solve latent demand by developing Latent Demand Resolver (LD-Resolver), the new latent demand estimation and exchanging system. LD-Resolver has two components, Latent Demand Extractor (LD-Extractor) and Latent Demand Exchanger (LD-Exchanger). LD-Extractor extracts a latent demand from various social conditions using IoT sensors, Web, and SNS. LD-Exchanger has a new structure to exchange a latent demand with an appropriate service supply. Finally, we developed the LD-Resolver and conducted a demonstration experiment at the Higashiyama Zoo and Botanical Garden to verify the method. As a result of the two-week experiment, the proposed method can be effectively used in actual facility operations.

DOI： 10.23919/ICMU50196.2021.9638789

その他リンク： https://dblp.uni-trier.de/db/conf/icmu/icmu2021.html#NagataMKUAYK21

Estimating and Leveraging Latent Social Demand Based on IoT sensors: An Empirical Study in a Large Public Park 査読有り

Nagata, Y; Murai, D; Katayama, S; Urano, K; Aoki, S; Yonezawa, T; Kawaguchi, N

13TH INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND UBIQUITOUS NETWORK (ICMU2021) 2021年

DigiMobot: Digital Twin for Human-Robot Collaboration in Indoor Environments 査読有り

Fukushima, Y; Asai, Y; Aoki, S; Yonezawa, T; Kawaguchi, N

2021 32ND IEEE INTELLIGENT VEHICLES SYMPOSIUM (IV) 2021-July 巻頁： 55 - 62 2021年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IEEE Intelligent Vehicles Symposium Proceedings

Human-robot collaboration and cooperation are critical for Autonomous Mobile Robots (AMRs) in order to use them in indoor environments, such as offices, hospitals, libraries, schools, factories, and warehouses. Since a long transition period might be required to fully automate such facilities, we have to deploy AMRs while improving safety in the mixed environments of human and mobile robots. In addition, human behaviors in such environments might be difficult to predict. In this paper, we present a Digital Twin for Autonomous Mobile Robots system named DigiMobot to support, manage, monitor, and validate AMRs in indoor environments. First, DigiMobot can simulate human behaviors and robot movements to verify and validate AMRs to improve safety in a virtual world. Secondly, DigiMobot can monitor and manage AMRs in the physical world by collecting sensor data from each robot in real-time. Since DigiMobot enables us to test the robot systems in the virtual world, we can deploy and implement AMRs in each facility without any modifications. To show the feasibility of DigiMobot, we develop a software framework and two different types of autonomous mobile robots. Finally, we conduct real-world experiments in a warehouse located in Saitama, Japan, in which more than 400, 000 items are stored for commercial purposes.

DOI： 10.1109/IV48863.2021.9575499

その他リンク： https://dblp.uni-trier.de/db/conf/ivs/ivs2021.html#FukushimaAAYK21

Science and Technologies for Smart Cities - 6th EAI International Conference, SmartCity360° Virtual Event, December 2-4, 2020, Proceedings 査読有り

SmartCity360° 372 巻 2021年

Time-resolved X-ray photoelectron diffraction using an angle-resolved time-of-flight electron analyzer 査読有り

Ang A.K.R., Fukatsu Y., Kimura K., Yamamoto Y., Yonezawa T., Nitta H., Fleurence A., Yamamoto S., Matsuda I., Yamada-Takamura Y., Hayashi K.

Japanese Journal of Applied Physics 59 巻 ( 10 ) 2020年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Japanese Journal of Applied Physics

X-ray photoelectron diffraction (XPD) provides atomic resolution, element sensitive local structure information about the surfaces and interfaces of materials. In the work reported in this paper, a two-dimensional angle resolved time-of-flight (2DARTOF) system is used to perform time-resolved XPD experiments on epitaxial silicene. The two Si 2p peak components from the different atomic sites in the silicene layer allow extraction of the individual XPD patterns. Time-resolved measurements captured small angle shifts in the forward focusing peak, indicating laser-induced changes in the silicene structure. At 10 ns, the XPD patterns appear to relax back to the equilibrium state. This work demonstrates that 2DARTOF systems are well suitable for time-resolved XPD measurements.

DOI： 10.35848/1347-4065/abb57e

CityFlow: Supporting Spatial-Temporal Edge Computing for Urban Machine Learning Applications 査読有り

Kawano, M; Yonezawa, T; Tanimura, T; Giang, NK; Broadbent, M; Lea, R; Nakazawa, J

3RD EAI INTERNATIONAL CONFERENCE ON IOT IN URBAN SPACE 頁： 3 - 15 2020年

記述言語：英語掲載種別：論文集(書籍)内論文出版者・発行元：Eai Springer Innovations in Communication and Computing

A growing trend in smart cities is the use of machine learning techniques to gather city data, formulate learning tasks and models, and use these to develop solutions to city problems. However, although these processes are sufficient for theoretical experiments, they often fail when they meet the reality of city data and processes, which by their very nature are highly distributed, heterogeneous, and exhibit high degrees of spatial and temporal variance. In order to address those problems, we have designed and implemented an integrated development environment called CityFlow that supports developing machine learning applications. With CityFlow, we can develop, deploy, and maintain machine learning applications easily by using an intuitive data flow model. To verify our approach, we conducted two case studies: deploying a road damage detection application to help monitor transport infrastructure and an automatic labeling application in support of a participatory sensing application. These applications show both the generic applicability of our approach, and its ease of use; both critical if we wish to deploy sophisticated ML based applications to smart cities.

DOI： 10.1007/978-3-030-28925-6_1

Poster Abstract: SelfGuard: Semi-Automated Activity Tracking for Enhancing Self-Protection against the COVID-19 Pandemic 査読有り

Nishiyama, Y; Yonezawa, T; Sezaki, K

PROCEEDINGS OF THE 2020 THE 18TH ACM CONFERENCE ON EMBEDDED NETWORKED SENSOR SYSTEMS, SENSYS 2020 頁： 780 - 781 2020年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Sensys 2020 Proceedings of the 2020 18th ACM Conference on Embedded Networked Sensor Systems

Contagious diseases like COVID-19 spread periodically and threaten our lives. Self-protection, such as washing hands, wearing a mask, and staying home, are simple and practical solutions to safeguard against these diseases. Most governments and health departments recommend that people maintain self-protection. Although continuous self-protection effectively prevents the spread of infection, only the intent to self-protect is unsustainable in the long term. In this study, we design, develop, and deploy an application to track users' daily activities semi-automatically and enhance self-protection behavior using mobile sensing and gamified feedback techniques. Currently, more than 324 people have installed the app via AppStore, and 52 users have shared their activity data to our research group.

DOI： 10.1145/3384419.3430592

その他リンク： https://dblp.uni-trier.de/db/conf/sensys/sensys2020.html#NishiyamaYS20

GANonymizer: Image Anonymization Method Integrating Object Detection and Generative Adversarial Network 査読有り

Tanimura, T; Kawano, M; Yonezawa, T; Nakazawa, J

3RD EAI INTERNATIONAL CONFERENCE ON IOT IN URBAN SPACE 頁： 109 - 121 2020年

記述言語：英語掲載種別：論文集(書籍)内論文出版者・発行元：Eai Springer Innovations in Communication and Computing

Sharing and analyzing image data from ubiquitous urban cameras must enable us to understand and predict various contexts of the city. Meanwhile, since such image data always contains privacy data such as people and cars, we cannot easily share and analyze the data through the Internet for the viewpoint of privacy protection. As a result, most of urban image data are only kept/shared within the camera owners, or even discarded to reduce risks of privacy data leakage. To solve the privacy problem and accelerate sharing of urban image data, we propose GANonymizer that automatically detects and removes objects related to privacy from the urban images. GANonymizer combines two neural networks: (1) a network which detects objects related to privacy such as persons and cars in an input image using object detection network and (2) a network that removes the detected objects naturally as though they are not exist originally. Through our experiment of applying GANonymizer to urban video images, we confirmed that GANonymizer partially achieved natural removal of objects related to privacy.

DOI： 10.1007/978-3-030-28925-6_10

Civic Crowdsensing Through Location-Aware Virtual Monsters 査読有り

Yonezawa, T; Sakamura, M; Kawaguchi, N; Nakazawa, J

DISTRIBUTED, AMBIENT AND PERVASIVE INTERACTIONS, DAPI 2020 12203 巻頁： 464 - 476 2020年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

We present a new model for encouraging people to get involved with monitoring and taking part in the life of cities. Cities could be smarter if IoT and people could serve as engaged and pro-active data resources (i.e., crowd sensing). This study tackles two challenges: methods by which the privacy of people who act as sensors/actuators can be guaranteed and methods to create a unified programming model for crowd sensors alongside other IoT functions. To achieve these goals, we introduce a new concept called Lokemon (Location Monster). Each sensing space is characterized as a personified target. Lokemon asks users to imagine themselves to be monsters associated with target spots when achieving sensing tasks. Lokemon is also expressed as a PubSub node so that the data from Lokemon can be easily accessed in the same way as data from IoT is assessed. The article explains the concept of Lokemon and its programming model. We report our evaluation of the effectiveness of Lokemon in a campus experiment that was performed for four weeks.

DOI： 10.1007/978-3-030-50344-4_33

その他リンク： https://dblp.uni-trier.de/db/conf/hci/hci2020-23.html#YonezawaSKN20

Person-Flow Estimation with Preserving Privacy Using Multiple 3D People Counters 査読有り

Nagata Y., Yonezawa T., Kawaguchi N.

Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering Lnicst 372 巻頁： 615 - 634 2020年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering Lnicst

The spread of mobile phones made it easy to estimate person-flow for corporate marketing, crowd analysis, and countermeasures for disaster and disease. However, due to recent privacy concerns, regulations have been tightened around the world and most smartphone operating systems have increased privacy protection. To solve this, in this study, we propose the person-flow estimation technique with preserving privacy. We use 3D People Counter which can record only the time and direction of passing people, a person’s height, and walking speed, therefore it preserves privacy from the moment of collecting data. To estimate people’s in-out data, we propose four methods and they use some of the sensor data above in different combinations. We compared these methods and the height-based method could estimate about 79% of the sensor data as in-out data. Additionally, we also created a system to interpolate in-out data into person-flow data and to visualize it. By using this method, we believe that it can be used for the purposes described in the beginning.

DOI： 10.1007/978-3-030-76063-2_41

その他リンク： https://dblp.uni-trier.de/db/conf/smartcity360/sc2020.html#NagataYK20

An End-to-End BLE Indoor Location Estimation Method Using LSTM 査読有り

Urano K., Hiroi K., Yonezawa T., Kawaguchi N.

2019 12th International Conference on Mobile Computing and Ubiquitous Network, ICMU 2019 2019年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：2019 12th International Conference on Mobile Computing and Ubiquitous Network, ICMU 2019

Indoor location estimation has long been researched to realize location-based services. In this paper, we propose an indoor location estimation method for Bluetooth Low Energy (BLE) devices using end-to-end LSTM neural network. We focus on large-scale exhibition where is a tough environment for wireless indoor location estimation due to signal strength instability. To achieve higher accuracy, deep learning based methods are proposed rather than trilateration or fingerprint. Existing deep learning based methods estimate the location from the probabilities using the difference of query signal strength and autoencoder-reconstruction of it. Proposed method adopts end-to-end location estimation, which means the neural network takes a time-series of signal strength and outputs the estimated location at the latest time in the input time-series. We also build a loss function which takes how a person walks into account. Considering the difficulty of data collection within a short preparation term of an exhibition, the data generated by a simple simulation is used in the training phase before training with a small amount of real data. As a result, the estimation accuracy is average of 1.92m, using the data collected in GEXPO exhibition in Miraikan, Tokyo. Proposed method outperforms our previous trilateration based method's 4.51m average.

DOI： 10.23919/ICMU48249.2019.9006638

Rehabilitation Support Robot for Self-Standing-Up Training of Hemiplegic Stroke Patients - Design of Counterbalance Mechanism 査読有り

Tokinaga T., Yonezawa T., Saito M., Morita Y., Tanabe H., Kiss B.

International Conference on Control Automation and Systems 2019-October 巻頁： 385 - 388 2019年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：International Conference on Control Automation and Systems

The objective of the study involved developing a rehabilitation support robot for self-standing-up training of hemiplegic stroke patients to restore normal standing-up motion. Based on our previous analysis of the therapist's guiding movements in standing-up training of patients, a passive-type robot was adopted. However, the link weight of the robot acts as a load at the patient's waist. In this work, we designed a counterbalance mechanism for the robot in order to reduce the load at the patient's waist and determined the optimal parameters for the mechanism. We confirmed by simulation that the specifications of the forces acting on the end-effectors of the robots were satisfied, and thus the proposed counterbalance mechanism was effective.

DOI： 10.23919/ICCAS47443.2019.8971502

回転磁石マーカを用いたスマートフォン所持者の2次元経路推定査読有り Open Access

渡邊康祐, 廣井慧, 米澤拓郎, 梶克彦, 河口信夫

マルチメディア，分散，協調とモバイル(DICOMO2019)シンポジウム頁： 22 - 28 2019年7月

異なるサービス提供者間におけるトラストモデルとその実装に関する研究査読有り Open Access

平野流, 廣井慧, 米澤拓郎, 河口信夫

マルチメディア，分散，協調とモバイル(DICOMO2019)シンポジウム頁： 284 - 290 2019年7月

ニューラルネットワークを用いた大規模イベント向けBLE屋内位置推定の比較評価査読有り Open Access

浦野健太, 廣井慧, 米澤拓郎, 河口信夫

マルチメディア，分散，協調とモバイル(DICOMO2019)シンポジウム頁： 29 - 35 2019年7月

人の回避行動を考慮した移動ロボットの経路計画法の検討 Open Access

浅井悠佑, 廣井慧, 米澤拓郎, 河口信夫

マルチメディア，分散，協調とモバイル(DICOMO2019)シンポジウム頁： 840 - 845 2019年7月

Hybrid Activity Recognition for Ballroom Dance Exercise using Video and Wearable Sensor 査読有り

Hitoshi Matsuyama, Kei Hiroi, Katsuhiko Kaji, Takuro Yonezawa, Nobuo Kawaguchi

International Conference on Activity and Behavior Computing 頁： Paper66 2019年6月

Hybrid activity recognition for ballroom dance exercise using video and wearable sensor 査読有り

Matsuyama H., Hiroi K., Kaji K., Yonezawa T., Kawaguchi N.

2019 Joint 8th International Conference on Informatics, Electronics and Vision, ICIEV 2019 and 3rd International Conference on Imaging, Vision and Pattern Recognition, icIVPR 2019 with International Conference on Activity and Behavior Computing, ABC 2019 頁： 112 - 117 2019年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：2019 Joint 8th International Conference on Informatics, Electronics and Vision, ICIEV 2019 and 3rd International Conference on Imaging, Vision and Pattern Recognition, icIVPR 2019 with International Conference on Activity and Behavior Computing, ABC 2019

In this paper, we propose a hybrid activity recognition method for ballroom dance exercise using video and wearable sensor. The purpose of our research is to design a mechanism to support ballroom dance exercise, and this paper reports the first part to design a mechanism is to support ballroom dance exercise, and this paper reports the first outcome to achieve the purpose - recognizing ballroom dance exercise. There are two conceivable ways to recognize dance exercise: videos and wearable sensor. However, each of them has its disadvantages. Using video is a good way to recognize the movement of the body. However, it cannot provide us accurate timing or strength of foot actions because the number of their flames per seconds is too small to recognize the fast movements of dancers. On the other hand, while a wearable sensor is good at recognizing foot timing and strength, it is not good at recognizing the movement of the whole body. Therefore we propose a hybrid recognition method utilizing the merits of both video and wearable sensor. This paper focuses to recognize four different types of steps in Latin American, a kind of ballroom dance. For each step, we record wearable sensing data and videos. As a result, it is found that the accuracy of step recognition is improved by adding wearable sensing data to video data shot from two different angles.

DOI： 10.1109/ICIEV.2019.8858524

Cruisers: An automotive sensing platform for smart cities using door-to-door garbage collecting trucks 査読有り

Chen, Y; Nakazawa, J; Yonezawa, T; Tokuda, H

AD HOC NETWORKS 85 巻頁： 32 - 45 2019年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ad Hoc Networks

Due to the advance in information and communication technologies, smart cities have become an increasingly appealing vision. One indispensable basis in the research, development and implementation of smart cities is urban sensing technology. Automotive sensing is a novel urban sensing technology that equips sensors to vehicles, like buses, taxi cabs or garbage trucks and utilizes their mobility to help to conduct urban sensing tasks. In this paper, we present Cruisers, an automotive sensing platform for smart cities, based on the following ideas: a) Garbage collecting trucks are used to host sensors, b) Cellular communication network is used to deliver sensed data to servers, and c) Proxy server(s) are adopted to convert the format of sensed data to required ones, such as sampling rate, spatial interval or pub/sub protocol. To validate the feasibility of Cruisers, we implement a real system that consists of 66 customized sensing modulars integrating typical environmental and mobility sensors and deploy them into the garbage collecting trucks at Fujisawa, a medium-sized city in Japan. Performance evaluation is conducted to investigate the performance of Cruisers in terms of scalability, data publishing delay and spatial coverage.

DOI： 10.1016/j.adhoc.2018.10.018

Sampling Rate Dependency in Pedestrian Walking Speed Estimation Using DualCNN-LSTM 査読有り

Yoshida, T; Nozaki, J; Urano, K; Hiroi, K; Kaji, K; Yonezawa, T; Kawaguchi, N

UBICOMP/ISWC'19 ADJUNCT: PROCEEDINGS OF THE 2019 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING AND PROCEEDINGS OF THE 2019 ACM INTERNATIONAL SYMPOSIUM ON WEARABLE COMPUTERS 頁： 862 - 868 2019年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM

There are many inertial sensor based indoor localization methods for smartphone, for example, SINS and PDR. However, most of the MEMS sensors of smartphones are not precise enough for these methods. We proposed end-to-end walking speed estimation method using deep learning to perform robust walking speed estimation with a low-precision sensor. Currently, we use the input data with a fixed format of 200 samples at 100 Hz. However, the sampling rate and sequence length should be changed appropriately depending on the required accuracy and terminal performance. They are critical factors when using our method for a long time on a terminal because continuous processing of a large amount of data leads to shorter battery life. In this paper, we evaluate the accuracy of the estimated speed by our method when changing the sampling rate and sequence length. As a result, using 5 patterns of combinations, the estimation accuracy hardly changed.

DOI： 10.1145/3341162.3343765

Ballroom Dance Step Type Recognition by Random Forest Using Video and Wearable Sensor 査読有り

Matsuyama, H; Hiroi, K; Kaji, K; Yonezawa, T; Kawaguchi, N

UBICOMP/ISWC'19 ADJUNCT: PROCEEDINGS OF THE 2019 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING AND PROCEEDINGS OF THE 2019 ACM INTERNATIONAL SYMPOSIUM ON WEARABLE COMPUTERS 頁： 774 - 780 2019年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM

The paper presents a hybrid ballroom dance step type recognition method using video and wearable sensors. Learning ballroom dance is very difficult for less experienced dancers as it has many complex types of steps. Therefore, our purpose is to recognize the various step types to support step learning. While the major approach to recognize dance performance is to utilize video, we cannot simply adopt it for ballroom dance because the dancers’ images overlap each other. To solve the problem, we propose a hybrid step recognition method combining video and wearable sensors for enhancing its accuracy and robustness. We collect seven dancers’ video and wearable sensors data including acceleration, angular velocity, and body parts location change. After that, we pre-process them and extract some feature values to recognize the step types. By adopting Random Forest for recognition, we confirmed that our approach achieved f1-score 0.760 for 13 step types recognition. Finally, we will open our dataset of ballroom dance to HASCA community for further research opportunities.

DOI： 10.1145/3341162.3344852

CityFlow: exploiting edge computing for large scale smart city applications 査読有り Open Access

Giang Nam Ky, Leung Victor C. M., Kawano Makoto, Yonezawa Takuro, Nakazawa Jin, Lea Rodger, Broadbent Matt

2019 IEEE INTERNATIONAL CONFERENCE ON BIG DATA AND SMART COMPUTING (BIGCOMP) 頁： 631-634 2019年

Gait Dependency of Smartphone Walking Speed Estimation using Deep Learning. 査読有り

Takuto Yoshida, Junto Nozaki, Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi

Proceedings of the 17th Annual International Conference on Mobile Systems, Applications, and Services, MobiSys 2019, Seoul, Republic of Korea, June 17-21, 2019. 頁： 641 - 642 2019年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM

This paper proposes an accurate estimation method of walking speed using deep learning for smartphone-based Pedestrian Dead Reckoning (PDR). PDR requires to estimate speed and direction of pedestrians accurately using accelerometer and gyroscope. To improve the accuracy of PDR, existing works focused to improve the key factors of speed estimation (i.e., stride and/or step estimation) by adapting deep learning. On the contrary, our research proposes to adapt deep learning more directly to estimate walking speed from sensor data of smartphone. We evaluate the accuracy of proposed method by comparing with conventional PDR method. As a result, we confirmed that proposed method can estimate the speed more accurately.

DOI： 10.1145/3307334.3328667

Basic Study of BLE Indoor Localization using LSTM-based Neural Network. 査読有り

Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi

Proceedings of the 17th Annual International Conference on Mobile Systems, Applications, and Services, MobiSys 2019, Seoul, Republic of Korea, June 17-21, 2019. 頁： 558 - 559 2019年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM

In this paper, LSTM-based neural network is applied to indoor localization using mobile BLE tag’s signal strength collected by multiple scanners. Stability of signal strength is a critical factor of wireless indoor localization for higher accuracy. While traditional methods like trilateration and fingerprinting suffer from noise and packet loss, deep learning based methods perform well. We focus on large-scale exhibition where wireless signal gets unstable due to many people. Proposed neural network consists of fully connected layers for noise removal and LSTM layers for time-series feature extraction. The network takes the time-series of signal strength as input and outputs the estimated location. In the evaluation, the number of layers is changed to find the optimal structure. As a result, the best configuration achieved the error of 2.44m at 75 percentile for the data of a large-scale exhibition in Tokyo.

DOI： 10.1145/3307334.3328624

Capturing Subjective Time as Context and It's Applications. 査読有り

Takuro Yonezawa, Yuuki Nishiyama, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the 17th Annual International Conference on Mobile Systems, Applications, and Services, MobiSys 2019, Seoul, Republic of Korea, June 17-21, 2019. 頁： 647 - 648 2019年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM

We propose an integrated framework for sensing, recognizing and utilizing of subjective time as context. Various studies on experimental psychology have showed several factors which affects subjective time. Those factors should be partially captured by ubiquitous sensors such as smartphones and wearable devices, therefore, we tackle to create common and individual model for subjective time based on the sensor data. We report our first prototype implementation for the framework based on AWARE framework with adding experience sampling method for subjective time recognition. In addition, we discuss potential applications which leveraging advantages of subjective time as context.

DOI： 10.1145/3307334.3328719

An End-to-End BLE Indoor Location Estimation Method Using LSTM 査読有り

Urano Kenta, Hiroi Kei, Yonezawa Takuro, Kawaguchi Nobuo

2019 TWELFTH INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND UBIQUITOUS NETWORK (ICMU) 2019年

CityFlow: Exploiting Edge Computing for Large Scale Smart City Applications 査読有り Open Access

Giang N.K., Leung V.C.M., Kawano M., Yonezawa T., Nakazawa J., Lea R., Broadbent M.

2019 IEEE International Conference on Big Data and Smart Computing, BigComp 2019 - Proceedings 頁： 1 - 4 2019年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：2019 IEEE International Conference on Big Data and Smart Computing, BigComp 2019 - Proceedings

This paper presents an approach to supporting the development process for large-scale smart city applications that leverage edge computing resources. A smart city testbed called CitiFlow is developed, which uses Distributed Node-RED as the underlying middleware to facilitate the decomposition and communication among sub components of large scale smart city applications. For the evaluation, a lab-based setup and a real world deployment were executed and are presented.

DOI： 10.1109/BIGCOMP.2019.8679234

その他リンク： https://dblp.uni-trier.de/db/conf/bigcomp/bigcomp2019.html#GiangLKYNLB19

Hybrid Activity Recognition for Ballroom Dance Exercise using Video and Wearable Sensor 査読有り

Matsuyama Hitoshi, Hiroi Kei, Kaji Katsuhiko, Yonezawa Takuro, Kawaguchi Nobuo

2019 JOINT 8TH INTERNATIONAL CONFERENCE ON INFORMATICS, ELECTRONICS & VISION (ICIEV) AND 2019 3RD INTERNATIONAL CONFERENCE ON IMAGING, VISION & PATTERN RECOGNITION (ICIVPR) WITH INTERNATIONAL CONFERENCE ON ACTIVITY AND BEHAVIOR COMPUTING (ABC) 頁： 112 - 117 2019年

Cruisers: An automotive sensing platform for smart cities using door-to-door garbage collecting trucks 査読有り

中澤仁, 米澤拓郎

International Journal of Ad Hoc Networks 85 巻頁： 32 - 45 2019年

End-to-end walking speed estimation method for smartphone PDR using DualCNN-LSTM 査読有り

Kawaguchi N., Nozaki J., Yoshida T., Hiroi K., Yonezawa T., Kaji K.

Ceur Workshop Proceedings 2498 巻頁： 463 - 470 2019年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ceur Workshop Proceedings

Most of the current inertial positioning systems can be categorized as the strapdown algorithm and the step-and-heading approach. However, for the strapdown algorithm using smartphone as a sensor device, the accuracy of the current MEMS based accelerometer are not enough for estimating relative movement. Also, for the step-and-heading approach, robust estimation of step length is always difficult. In this paper, we propose an end-to-end walking speed estimation method using Deep Learning to overcome these problems. By using our method, we can achieve a smartphone PDR with higher accuracy and better robustness to gait type.

End-to-end walking speed estimation method for smartphone PDR using DualCNN-LSTM. 査読有り

Nobuo Kawaguchi, Junto Nozaki, Takuto Yoshida, Kei Hiroi, Takuro Yonezawa, Katsuhiko Kaji

Short Paper Proceedings of the Tenth International Conference on Indoor Positioning and Indoor Navigation - Work-in-Progress Papers (IPIN-WiP 2019) co-located with the Tenth International Conference on Indoor Positioning and Indoor Navigation (IPIN 2019) 頁： 463 - 470 2019年

Twitterにおける虚偽情報拡散抑制に向けた情報拡散コミュニティ可視化手法の検討査読有り

日下部眞太郎, 米澤拓郎, 大越匡, 鈴木もとこ, 山田曉, 中澤仁

研究報告ユビキタスコンピューティングシステム（UBI） 2018-UBI-6 巻 ( 21 ) 頁： 1 2018年11月

みなレポ：地方自治体の日常的な行政業務における参加型センシングによる情報収集・共有システム Open Access

坂村美奈, 米澤拓郎, 伊藤友隆, 金子義之, 中澤仁

デジタルプラクティス 9 巻 ( 2 ) 頁： 550 - 572 2018年4月

記述言語：日本語掲載種別：研究論文（学術雑誌）

地方自治体には，多種多様化する住民の要望に対して，迅速な把握・対応をする効率的なまちづくりの実現が期待される．しかし，現状の地方自治体の日常的な行政業務では，情報がデータ化・共有できておらず時間的・人的コストが高い部分が存在する．本研究では，地方自治体の日常的な行政業務において，職員の持つ携帯端末を通してリアルタイムな情報を取得可能とする参加型センシングを適用し，効率的な情報収集・共有を可能とすることを目的とする．本研究で開発した情報収集・共有システム，みなレポにより，地方自治体の日常的な行政業務の効率化だけでなく，地方自治体の職員による専門的知識に基づいた情報収集が実現される．みなレポは2016年10月から藤沢市において実運用されており，道路・ゴミの集積所の管理や，動物の死骸・落書き・不法投棄の発見に関するレポートがこれまで計1,740件以上収集された．本稿では，実運用により得られた知見および課題について報告する．

Tacvie : 体験映像の臨場感を増幅する触覚再現デバイスの実装 (知的環境とセンサネットワーク)

佐々木佳介, 野崎大幹, 西山勇毅, 米澤拓郎, 中澤仁

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117 巻 ( 451 ) 頁： 81 - 88 2018年2月

パーソナルエリアネットワークとゲーミフィケーションを用いた高齢者の相互見守りプラットホーム査読有り

中澤仁, 佐々木航, 小渕幹夫, 江頭和輝, 西山勇毅, 大越匡, 米澤拓郎, 徳田英幸

電子情報通信学会論文誌D 情報・システム J101-D 巻 ( 2 ) 頁： 306 - 319 2018年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）

地域コミュニティにおける高齢者の相互見守りを実現するプラットホームとして鵠沼ハッピーボードを提案し，約10ヶ月間に渡る実験を通じてその有効性を示した．鵠沼ハッピーボードでは，PANからの健康情報取得，スマートフォンを用いた笑顔画像撮影と共有，及びミッション，スコア，ランキングによるゲーミフィケーションを用いて相互見守りを実現した．実験は神奈川県藤沢市内の町内会会員7名を対象として実施し，実験者による協力依頼がない環境においても，鵠沼ハッピーボードが利用者同士の情報共有と相互見守りを促進することを示した．特に，高齢者同士が毎日の歩数や「自撮り」笑顔画像の背景等からお互いの生活状況を積極的に把握しようとする行動が見られ，情報技術を介した地域コミュニティの結びつき強化に繋がった．

DOI： 10.14923/transinfj.2017hap0019

Road marking blur detection with drive recorder 査読有り

Kawano M., Mikami K., Yokoyama S., Yonezawa T., Nakazawa J.

Proceedings 2017 IEEE International Conference on Big Data Big Data 2017 2018- 巻頁： 4092 - 4097 2018年1月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings 2017 IEEE International Conference on Big Data Big Data 2017

Can we inspect the road condition at a low cost? City infrastructures, such as roads are very important for citizens to their city lives. Roads require constant inspection and repair due to deterioration, but it is expensive to do so with manual labor. Meanwhile, there are official city vehicles, especially garbage trucks that run through the entire area of a city every day and have cameras to record their driving. When we use these cameras, we can watch roads conditions anytime, anywhere. In our study, we focus on these cameras and attempt detecting the road damage, such as road marking blur. To achieve our goal, we explore the new system in this paper. This system adopts the object detection approach that is end-to-end learning and based on deep neural networks, which propose the blur region candidate and detect whether the road markings are blurred or not all at once. In our experiment, first, we obtain the drive recorder video from sanitation engineer and then annotate them. After annotation, we trained our models and calculate the mean average precision to evaluate our models. As a result, our model performs on our collected dataset.

DOI： 10.1109/BigData.2017.8258427

Continuous Shape Changing Locomotion of 32-legged Spherical Robot 査読有り

Nozaki, H; Kujirai, Y; Niiyama, R; Kawahara, Y; Yonezawa, T; Nakaza, J

2018 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS) 頁： 2721 - 2726 2018年

Damaged lane markings detection method with label propagation 査読有り

Nukita, T; Kishimoto, Y; Iida, Y; Kawano, M; Yonezawa, T; Nakazawa, J

2018 IEEE 24TH INTERNATIONAL CONFERENCE ON EMBEDDED AND REAL-TIME COMPUTING SYSTEMS AND APPLICATIONS (RTCSA) 頁： 203 - 208 2018年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IEEE Computer Society

We propose a damaged traffic lane detection method ensuring high accuracy in spite of only a few number of supervised data which are labeled traffic lane images. In general, supervised machine learning approach is very powerful for image classification. However, preparing a large amount of supervised data is time-consuming task because labeling damaged or not damaged is usually done manually through visual inspection of images. Thus, lowering the cost of labeling data is a great concern. To this end, we adopt a semi-supervised machine learning approach which learns from both labeled and unlabeled data by constructing graph based on the image similarity. We captured a large amount of the road lane images. Then, we constructed graph structure whose nodes are the road lane images and whose edges are the similarity between the images. In several nodes, we assigned labels which denote "damaged" or "not damaged." Finally we utilized the label propagation, which made it possible to infer the labels of the unlabeled data from the labeled data. These estimation resulted in the accuracy rate over 85% from the supervised data, which accounted for only 1.8% of the total data.

DOI： 10.1109/RTCSA.2018.00032

小学生の書道基本姿勢定着に向けた点画検出および採点手法 Open Access

柿野優衣, 河野慎, 米澤拓郎, 中澤仁

人工知能学会全国大会論文集 JSAI2018 巻 ( 0 ) 頁： 1L104 - 1L104 2018年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人人工知能学会

<p>初めて書道に触れる小学生から書道に対し基本姿勢を身につける方法として点画の練習が挙げられる．点画は書道の基本技術であり作品を構成する上で極めて重要な要素である．そこで本研究では，時と場所を選ばず練習できる環境を得られるアプリケーション実現のため，自動的に書作品評価を行う手法を提案する．書作品内に含まれる点画検出を物体検出問題として扱い，検出した点画評価することで書作品の点数付けを行う．本研究ではSingle Shot Multibox Detectorを適用する．データセットには実際の書道教室に通う小学生の書作品を用いる．提案手法の有効性を検証するため実験において点画検出の精度比較と点数付けの定性的評価を行なった．その結果，提案手法の有効性を確認できた．</p>

DOI： 10.11517/pjsai.jsai2018.0_1l104

深層学習を用いた高解像度画像からの人物カウント Open Access

山田佑亮, 河野慎, 米澤拓郎, 中澤仁

人工知能学会全国大会論文集 JSAI2018 巻 ( 0 ) 頁： 4Pin105 - 4Pin105 2018年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人人工知能学会

<p>観光地でのIT導入があまり進んでおらず、ITを導入することで改善される問題は多く存在する。例えば、観光地などで人物カウントを自動で行うシステムを導入することによって、観光地の集客力を定量的に分析することが可能となる。本研究では、広域の観光地を捉えた高解像度の画像から人物をカウントする手法を提案する。人物カウントのシステムの先行研究は複数存在するが、いずれも狭域を捉えた画像を扱っている。広域を捉えた画像は、人がいないエリアが、人がいるエリアよりも大きく、不均衡なデータである。我々の提案手法では、CNNを用いた密度推定に、サンプリングアルゴリズムを導入することによってデータの不均衡性に対処した。この手法の有効性を示すために、江ノ島の海岸を捉えた画像をデータセットとして用いて実験を行ったところ、既存手法を上回る精度を出すことができた。</p>

DOI： 10.11517/pjsai.jsai2018.0_4pin105

Meal Photo SNS with Mutual Healthiness Evaluation for Improving Users' Eating Habits 査読有り

Eigen, Y; Nishiyama, Y; Yonezawa, T; Okoshi, T; Nakazawa, J

PROCEEDINGS OF THE 2018 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING AND PROCEEDINGS OF THE 2018 ACM INTERNATIONAL SYMPOSIUM ON WEARABLE COMPUTERS (UBICOMP/ISWC'18 ADJUNCT) 60 巻 ( 10 ) 頁： 339 - 342 2018年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM

We propose a Meal Photo SNS (called HealthyStadium) for improving users' eating habits by mutually assessing each others' health. This application's method is to evaluates pictures of meals leads to the realization of sustainable journaling. In addition, we implement competitive awareness that motivates the users to improve their eating habits by allowing users to share their healthiness ranking amongst the users. Through our study, we confirmed that our system enables users to motivate for improving eating habits. Also we found the number of records is increased by our system.

DOI： 10.1145/3267305.3267584

OmimamoriNet: An Outdoor Positioning System Based on Wi-SUN FAN Network 査読有り

Chen, Y; Sakamura, M; Nakazawa, J; Yonezawa, T; Tsuge, A; Hamada, Y

2018 ELEVENTH INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND UBIQUITOUS NETWORK (ICMU 2018) 頁： . 2018年

Accelerating Urban Science by Crowdsensing with Civil Officers 査読有り

Yonezawa, T; Takeuchi, K; Ito, T; Sakamura, M; Kishino, Y; Naya, F; Ueda, N; Nakazawa, J

PROCEEDINGS OF THE 2018 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING AND PROCEEDINGS OF THE 2018 ACM INTERNATIONAL SYMPOSIUM ON WEARABLE COMPUTERS (UBICOMP/ISWC'18 ADJUNCT) 頁： 303 - 306 2018年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM

We present how crowdsensing with civil officers contribute to collect larger amount of urban data with high spatial-temporal coverage, and enable to understand urban features by analyzing the data. We implemented a crowdsensing system which fits to daily city management, and conducted long-term experiment with garbage section of Fujisawa city, Japan. Based on analysis of collected data, we show that our system provide fine-grained urban data compared to crowdsensing with citizens with improving efficiency of city management. In addition, we analyze our dataset with demographic urban data, and clarified the relationship between pattern of uncollectible garbage thrown and features of resident area.

DOI： 10.1145/3267305.3267641

Continuous Shape Changing Locomotion of 32-legged Spherical Robot. 査読有り

Hiroki Nozaki, Yusei Kujirai, Ryuma Niiyama, Yoshihiro Kawahara, Takuro Yonezawa, Jin Nakazawa

2018 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2018, Madrid, Spain, October 1-5, 2018 頁： 2721 - 2726 2018年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IEEE

Shape changing robot is an approach towards locomotion on uncertain terrain due to its omni-directional features. However, the current locomotion method for such robots rely on discontinuous rolling. We propose a free form locomotion: an omni directional continuous crawling for deformable robots. This method introduce continuous shifting of contact surface similar to amoeba movement. A Mochibot that has thirty two telescopic legs is developed to verify the proposed locomotion method. Through the experiments, we have confirmed that the robot can track smooth paths: straight, smooth, and hand written curves. We also evaluate errors between desired and measured trajectories of the robot.

DOI： 10.1109/IROS.2018.8593791

OmimamoriNet: An Outdoor Positioning System Based on Wi-SUN FAN Network. 査読有り

Yin Chen,Mina Sakamura, Jin Nakazawa, Takuro Yonezawa, Akira Tsuge, Yuichi Hamada

Eleventh International Conference on Mobile Computing and Ubiquitous Network, ICMU 2018, Auckland, New Zealand, October 5-8, 2018 頁： 1 - 6 2018年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IEEE

We propose in this paper an outdoor positioning system based on Wi-SUN FAN network, the goal of which is to protect the elderly, young children and even pets via estimating their locations in a city. In order to achieve long-term portability and network-side positioning, the system does not directly rely on GPS receiver mounted on terminals but use machine learning for location estimation via the received signal strength indication (RSSI) measurements. In particular, the system consists of Wi-SUN beacons, Wi-SUN base-stations and vehicular devices. A beacon, attached to the one to be positioned, broadcasts wireless signal periodically so that its location can be estimated using machine learning algorithms from the RSSIs measured at multiple base-stations that are densely deployed over a city to construct an ad hoc network. Using the mobility of vehicles that roam over a city routinely, such like garbage collection trucks, buses and taxies. Vehicular devices containing both a Wi-SUN beacon and a GPS are used to collect RSSIs and the corresponding GPS coordinates to train the estimation models. We develop a prototype system consisting of 9 base-stations and deploy it to our university campus to conduct a field experiment to validate the proposed approach. Offline analysis on the data collected from the experiment showed that a RandomForest learner performs best among four selected learning algorithms using the default parameters of Weka 3.8, which achieves a mean absolute error of 35.43m and a root mean squared error of 44.21m, respectively. Evaluation on network performance is also conducted.

DOI： 10.23919/ICMU.2018.8653618

Senbay: a platform for instantly capturing, integrating, and restreaming of synchronized multiple sensor-data stream. 査読有り

Yuuki Nishiyama,Ani, K. Dey, Denzil Ferreira, Takuro Yonezawa, Jin Nakazawa

Proceedings of the 20th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct, MobileHCI 2018, Barcelona, Spain, September 03-06, 2018 頁： 291 - 291 2018年

Overview of IUI2018 workshop: User interfaces for spatial and temporal data analysis (UISTDA2018) 査読有り

Wakamiya S., Jatowt A., Kawai Y., Akiyama T., Campos R., Yonezawa T.

Ceur Workshop Proceedings 2068 巻 2018年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ceur Workshop Proceedings

Nowadays, humanity generates and contributes to form large and complex datasets, going from documents published on media outlets, posts on social media or location-based information. The generated information tends to be complex, heterogeneous (texts, images, videos, etc.) and is growing at an incredible pace, with much of this data having a strong spatial and temporal focus. This steady increase in the availability of such a volume of information, forces the development of more effective user interfaces that would assist users in efficient visualization, analysis and exploration of the data. This half-day workshop on User Interfaces for Spatial and Temporal Data Analysis (UISTDA) held in conjunction with the IUI2018 conference on March 11th, aimed at sharing the latest progress and developments, current challenges and potential applications for exploiting large amounts of spatial and temporal data. In this paper we provide an overview of the workshop goals together with its main contributions.

MyFactor：ユーザの内面状態に寄与する因子情報の個人特性に適応的な分析 Open Access

小渕幹夫, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁

情報処理学会論文誌 58 巻 ( 10 ) 頁： 1674 - 1687 2017年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）

近年，様々なセンサを搭載したスマートフォンの発達と普及により，第三者による客観視が困難である「忙しい」や「疲れている」といった人間の内面状態の推定を行う研究が行われている．人間の内面状態を機械に認識させ，内面状態に寄与している因子に関する情報を人々に還元できれば，人間が自身の感情や気分を制御したり，特定の内面状態の獲得や回避といった行動変容へと応用可能である．しかし，人間の内面状態の認識・分析・還元においては，各個人の多様性に適応した動作の実現が課題である．本研究ではスマートフォンのセンサデータを蓄積し，正解データとなる内面状態の注釈をユーザが記録することで，個人の内面状態に寄与している因子を還元するために，因子情報を解析するシステム「MyFactor」を構築した．大学生13名による111日にわたる評価実験を行った結果，被験者全員のデータを用いて学習を行う「統合モデル」と比較して，各ユーザのデータのみを用いて個別に学習した「個人モデル」においては内面状態の推定精度が21%上昇した．また，利用可能なすべてのセンサからのデータを用いて学習した場合よりも，単一センサからのデータのみを用いて学習を行い，最も高精度で分類を行ったモデルを選択した方が高い推定精度を記録し，ユーザに自身の内面状態に関して深い理解を与える可能性を示した．Recently, due to the advance and spread of smartphones equipped with various sensors, human beings' inner states such as "busyness" or "tiredness" can be detected more accurately. If people can recognize the factors contributing to their inner states, they will be able to regulate their own emotions and moods by paying attention to those factors. However, the adaptive system for each individual's diversity that recognize, analyze, and provide the factors contributing to our inner state is not realized. In this research, we propose a system, MyFactor, that accumulates smartphone sensor data and user annotations about inner states to extract and provide information about the important factors contributing to a user's inner states. In a 111-day experiment with 13 university students, researchers estimated that an "individual model" developed only with the data of each user had a higher predictive accuracy for human inner states than the generic model developed using data from all subjects. In addition, the model with the highest predictive accuracy, trained by a single sensor, performed better and showed the possibility of giving a deeper understanding of human inner states than the model trained using data from all available sensors.

ラベル伝播を用いた区画線の擦れ検出手法の提案 (パターン認識・メディア理解)

岸本康成, 飯田恭弘, 岩村相哲, 河野慎, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117 巻 ( 210 ) 頁： 97 - 102 2017年9月

ラベル伝播を用いた区画線の擦れ検出手法の提案 (情報論的学習理論と機械学習)

岸本康成, 飯田恭弘, 岩村相哲, 河野慎, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117 巻 ( 211 ) 頁： 97 - 102 2017年9月

ユニバーサルセンサネットワークと清掃車を活用した藤沢市のスマート化 Open Access

中澤仁, 陳寅, 米澤拓郎, 大越匡, 徳田英幸

デジタルプラクティス 8 巻 ( 3 ) 頁： 244 - 252 2017年7月

記述言語：日本語掲載種別：研究論文（学術雑誌）

さまざまなセンシングデータを実空間から収集し，住民や自治体，大学，民間企業をはじめとするステークホルダ間で共有し，情報の利活用を進めていくことで地域課題の解決に繋げることを目的として，まずセンシングデータの流通プラットフォームとしてユニバーサルセンサネットワーク技術(USN)を提案する．同技術では，物理センサや参加型センサをはじめとする多様なセンサで生成されたデータを，統一的なメタデータを伴って柔軟に流通させられ，通信プロトコルXMPP上のpublish/subscribe機能を用いて，センシングデータの生成側と消費側の相互依存性を解消しながら，スケーラブルなデータ流通を実現している．また，USNを用いた神奈川県藤沢市における実空間センシング事例として，清掃車にピギーバックした環境情報センシングと，行政職員による落書きや不法投棄物といった実空間不具合事象に関する参加型センシングを示す．これらのシステムの開発・運用を通じて，USNにおける仮想デバイスの抽象化を用いた多様なセンサの表現や機能の有効性を示すとともに，応用可能性やスケーラビリティを示す．

DOI： 10.20729/00182453

Likeyboard : ライフログデータ共有簡易化のためのスマートフォンキーボードインタフェース (モバイルネットワークとアプリケーション)

石川伶, 佐々木航, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116 巻 ( 508 ) 頁： 69 - 74 2017年3月

SpoTrip : 観光客リピータ化促進のための隠れスポット情報提供システムの評価 (モバイルネットワークとアプリケーション)

片山晋, 礒川直大, 小渕幹夫, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116 巻 ( 508 ) 頁： 157 - 164 2017年3月

Likeyboard : ライフログデータ共有簡易化のためのスマートフォンキーボードインタフェース (知的環境とセンサネットワーク)

石川伶, 佐々木航, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116 巻 ( 509 ) 頁： 79 - 84 2017年3月

SpoTrip : 観光客リピータ化促進のための隠れスポット情報提供システムの評価 (知的環境とセンサネットワーク)

片山晋, 礒川直大, 小渕幹夫, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116 巻 ( 509 ) 頁： 185 - 192 2017年3月

C's: Sensing the Quality of Traffic Markings Using Camera-Attached Cars 査読有り Open Access

KAWASAKI Takafumi, KAWANO Makoto, IWAMOTO Takeshi, MATSUMOTO Michito, YONEZAWA Takuro, NAKAZAWA Jin, TOKUDA Hideyuki

SICE Journal of Control, Measurement, and System Integration 10 巻 ( 5 ) 頁： 393 - 401 2017年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人計測自動制御学会

Road maintenance requires local city governments to dedicate a substantial amount of funds in finding and repairing damaged traffic marks and pavements. In developed cities, the total road length is so large that the cost becomes unreasonably high. In this paper, we propose a method of sensing damaged traffic marks from images captured by a camera mounted to a car, for the purpose of reducing road maintenance cost. In particular, we utilized convolutional neural networks (CNN), as well as linear support vector machines (SVM) and Random Forest, in developing a system of damage detection. The experiments used thousands of images captured in the wild and showed that the method can detect damages using CNN with 93% accuracy, at maximum, and at reasonable speed (55 images per second).

DOI： 10.9746/jcmsi.10.393

Road Marking Blur Detection with Drive Recorder 査読有り

Kawano, M; Mikami, K; Yokoyama, S; Yonezawa, T; Nakazawa, J

2017 IEEE INTERNATIONAL CONFERENCE ON BIG DATA (BIG DATA) 頁： 4092 - 4097 2017年

Interruptibility Map: Geographical Analysis of Users' Interruptibility in Smart Cities 査読有り

Obuchi, M; Okoshi, T; Yonezawa, T; Nakazawa, J; Tokuda, H

2017 IEEE INTERNATIONAL CONFERENCE ON PERVASIVE COMPUTING AND COMMUNICATIONS WORKSHOPS (PERCOM WORKSHOPS) 頁： 357 - 362 2017年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：2017 IEEE International Conference on Pervasive Computing and Communications Workshops Percom Workshops 2017

Investigating users' interruptibility as an indicator of his/her attention status has been essential in recent pervasive computing where the users' attention resources get scarce against ever increasing amounts of information. In this paper, we address research problems related to the users' available interruptibility, their physical activities, and their current locations and situations. We propose the 'Interruptibility Map', a geographical tool for analyzing and visualizing the user's local interruptibility status in the context of smart city research. Our map describes where citizens are expected to feel more or less interruptive against notifications produced by computing devices, which are known to have negative effects on work productivity, emotion, and psychological state. We conducted a continuous analysis from our previous research and a new additional in-the-wild user study for 2 weeks with 29 participants to investigate the relationship between one's interruptibility and their locations and situations. As a highlight of our findings, we found certain pairs of user activity change and a location that showed better interruptibility to users, such as an activity change of 'when user's riding car(bus) stops' in the bus commute situation.

DOI： 10.1109/PERCOMW.2017.7917588

Evaluating the spatio-temporal coverage of automotive sensing for smart cities. 査読有り

Yin Chen, Takuro Yonezawa, Jin Nakazawa, Hideyuki Tokuda

Tenth International Conference on Mobile Computing and Ubiquitous Network, ICMU 2017, Toyama, Japan, October 3-5, 2017 2018-January 巻頁： 1 - 5 2017年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IEEE

Automotive sensing is a novel and appealing sensing technology in which sensors are installed into vehicles to utilize vehicles' mobility to conduct urban sensing in smart cities. The coverage performance is a major metric to characterizing the quality-of-service of sensing systems. Despite of the coverage metrics studied in static sensor networks that consist of only spatial dimension, the lack of a proper metric to characterizing the spatio-temporal coverage of automotive sensing systems is stunting the research, development and commercialization of such mobile sensing systems. To address this issue, we propose, for the first time to the best of our knowledge, a spatio-temporal coverage metric for automotive sensing. The proposed metric characterizes the coverage in both spatial and temporal dimensions in order to provide a guideline for smart cities application developers to evaluate the quality-of-service that can be expected from an automotive sensing system. Evaluation based on an automotive sensing system implemented in Fujisawa City, Japan is conducted to demonstrate the usage of this metric in a realistic scenario.

DOI： 10.23919/ICMU.2017.8330071

Shape changing locomotion by spiny multipedal robot. 査読有り

Hiroki Nozaki, Ryuma Niiyama, Takuro Yonezawa, Jin Nakazawa

2017 IEEE International Conference on Robotics and Biomimetics, ROBIO 2017, Macau, Macao, December 5-8, 2017 2018-January 巻頁： 2162 - 2166 2017年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IEEE

The use of geometric is an alternative framework for robotic locomotion instead of animal-inspired structures. We propose a spiny, multi-pedal robot that uses radial linear actuators as the legs. We developed a unique telescopic slide actuator that has a stroke up to 250% of its minimum length. The default form of the robot is a sphere with variable diameters. The radial arrangement of the telescopic slide actuators allows a large range of shape transformation and processes for rolling. We first show the basic properties of the actuator to verify the ability to elevate and propel the body. The single module of the actuator has a weight of 0.4 kg and can output a force of 25 N maximum. We demonstrate that the robot with twelve spines can change its shape to adapt to a level ground, wall, and rocky surfaces. We also show that the robot can roll on level ground with triangle-based strides. We expect further applications in surveillance and unmanned exploration.

DOI： 10.1109/ROBIO.2017.8324739

Lokemon:その場に潜むモンスターを介した参加型センシング手法査読有り

坂村美奈, 米澤拓郎, 大越匡, 中澤仁, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2017-UBI54 巻 ( 12 ) 頁： 1 2017年

HealthFight: 多数決を用いた食習慣改善ソーシャルメディア査読有り

栄元優作, 江頭和輝, 河野慎, 西山勇毅, 大越匡, 米澤拓郎, 高汐一紀, 中澤仁

研究報告ユビキタスコンピューティングシステム（UBI） 2017-UBI55 巻 ( 16 ) 頁： 1 2017年

Evaluating the Spatio-temporal Coverage of Automotive Sensing for Smart Cities 査読有り

Chen, Y; Yonezawa, T; Nakazawa, J; Tokuda, H

2017 TENTH INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND UBIQUITOUS NETWORK (ICMU) 頁： 13 - 17 2017年

SpoTrip: 観光客リピータ化促進のための隠れスポット情報提供システムの評価査読有り

片山晋, 礒川直大, 小渕幹夫, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2017-UBI53 巻 ( 12 ) 頁： 1 2017年

Shape Changing Locomotion by Spiny Multipedal Robot 査読有り

Nozaki, H; Niiyama, R; Yonezawa, T; Nakazawa, J

2017 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (IEEE ROBIO 2017) 頁： 2162 - 2166 2017年

Likeyboard: ライフログデータ共有簡易化のためのスマートフォンキーボードインタフェース査読有り

石川伶, 佐々木航, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2017-UBI53 巻 ( 12 ) 頁： 1 2017年

実況lizer: スポーツ実況のメタファに基づいたライブ都市センサデータの可聴化手法の提案査読有り

井上義之, 米澤拓郎, 大越匡, 中澤仁

研究報告ユビキタスコンピューティングシステム（UBI） 2017-UBI56 巻 ( 6 ) 頁： 1 2017年

An Empirical Study on Coverage-Ensured Automotive Sensing using Door-to-door Garbage Collecting Trucks 査読有り

Chen Y., Nakazawa J., Yonezawa T., Kawasaki T., Tokuda H.

Proceedings of the 2nd International Workshop on Smart Smartcities 2016 頁： 6:1-6:6 - 6 2016年12月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings of the 2nd International Workshop on Smart Smartcities 2016

Due to the advance in information and communication technologies, smart cities have become an increasingly appealing vision. One indispensable basis in the research, development and implementation of smart cities is urban sensing technologies, which collect various citywide data that will be processed to generate information for understanding the status of cities. Automotive sensing is a novel urban sensing technology that utilizes the mobility of automobiles to conduct sensing tasks. In a collaborative smart-city project with the city office of Fujisawa City, Japan, we designed and implemented an automotive sensing platform called Cruisers, and have deployed it into the garbage collecting trucks of the city to evaluate the applicability of automotive sensing in realistic urban settings. In this paper, we first detail the system design, implementation and deployment of Cruisers and then evaluate its performance in realistic setting.

DOI： 10.1145/3009912.3009921

SOXFire: A Universal Sensor Network System for Sharing Social Big Sensor Data in Smart Cities 査読有り

Yonezawa T., Ito T., Nakazawa J., Tokuda H.

Proceedings of the 2nd International Workshop on Smart Smartcities 2016 頁： 2:1-2:6 - 6 2016年12月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings of the 2nd International Workshop on Smart Smartcities 2016

We introduce SOXFire, a multi-community city-wide sensor network for sharing social big sensor data in smart cities. The goal of SOXFire is to provide practical distributed and federated infrastructure for IoT sensor data sharing among various users/organizations in a way that is scalable, exten- sible, easy to use and secure with preserving privacy. SOX- Fire supports not only access to physical IoT sensors but also crowd sensing and SNS/Web sensing where city employees, citizen and WEB developers contributed in a different ways but unified APIs. In this paper, we outline the concept of SOXFire and present it's design and implementation with tangible libraries and tools. In addition, we discuss capability and usability of SOXFire based on our experiments in smart city project in Japan.

DOI： 10.1145/3009912.3009922

EverCuate：ユーザ非同期参加型津波避難訓練システム Open Access

大越匡, 米澤拓郎, 山本慎一郎, 中島円, 神武直彦, 栗田治, 中澤仁, 徳田英幸

情報処理学会論文誌 57 巻 ( 10 ) 頁： 2143 - 2161 2016年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）

大地震発生時の津波から身を守るためには平常時の津波避難訓練が重要とされる．本研究は，従来行われてきたイベント型の津波避難訓練における，災害シナリオ，訓練日時，訓練場所，参加可能な人の面での柔軟性欠如の課題に取り組み，ユビキタス・コンピューティング技術を利用してそれらを解決する「ユーザ非同期参加型津波避難訓練モデル」を提案する．同モデルにおいては，各ユーザが個別に，任意のタイミング・災害シナリオ・地点で避難訓練を実施でき，また避難行動記録や避難中の気づきを集約して可視化分析することで，防災計画の更新に活用できることを特長とする．本研究では同モデルに基づきプロトタイプシステム「EverCuate」を構築した．神奈川県藤沢市において40人の被験者による229回にわたる広範なユーザ評価実証実験，およびアンケート評価を行い，訓練への参加のしやすさへの寄与，防災意識向上への貢献，収集した避難行動やユーザフィードバック情報の可視化による防災計画への活用，既存方式と比較しての施策としての有効性の面で効果が明らかになった．Evacuation trainings have been conducted as an effective action to protect people from incoming tsunamis in case of a big earthquake. This research addresses limitations of existing conventional "event-style" tsunami evacuation trainings, that are inflexible in disaster scenarios, training timings, training locations, and participatable trainees. We propose a new ubiquitous computing technology-supported training model named "Asynchronously-Participatable Tsunami Evacuation Training Model" and a prototype system "EverCuate" based on this model. We evaluated the EverCuate system by conducting an extensive user study in Fujisawa city, Kanagawa, with 40 participants and the total number of 229 trainings. The evaluation results validated the effectiveness of EverCuate in terms of easiness in participation to a training, promotion of understanding necessity of different evacuation behaviour for different disaster scenarios, and easiness of analysing people's real evacuation behaviour from the view point of local authorities.

MinaQn：市民参加型まちづくりのための参加型センシングWebプラットフォーム Open Access

坂村美奈, 米澤拓郎, 伊藤友隆, 中澤仁, 徳田英幸

情報処理学会論文誌 57 巻 ( 10 ) 頁： 2162 - 2174 2016年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）

市民参加型まちづくり（Participatory planning）とは，まちづくりの過程に市民を巻き込むことであり，実際の都市の中で起こっている問題を素早く発見，解決できる可能性が高い．市民参加型まちづくりを促進するためには市の職員と市民の間での日常的なコミュニケーションを活性化することが重要である．本研究の目的は，人々が日常的に持つモバイル端末やPC端末を通して情報をやりとりする参加型センシングを市民参加型まちづくりにも適用することである．既存の参加型センシングの例では，質問の内容カテゴリが限定的なものや，市民の意見収集，意見交換を行うための特定のアプリケーションのインストールが必要であるものが存在する．また，市民から提供された情報はプライバシ情報を除いたオープンな情報であることやシステムの操作が容易であることが望ましい．本研究ではこれらの課題を解決し，市民参加型まちづくりのための参加型センシングシステム，MinaQnを提案する．本研究ではMinaQnを2週間にわたって3都市（藤沢市・茅ヶ崎市・寒川町）の公式ホームページに組み込み，市の職員および市民に利用してもらう実証実験を行った．全体として1,000個以上の回答データと市の職員および市民からのフィードバックを得ることで，定性的および定量的な評価を行い，将来異なる地域や多くの市民に持続的に参加してもらうためにはどうすればよいか，これからの参加型センシングシステムのデザイン指針を示した．特に災害時において今後より多くの市民に位置情報を提供してもらうためには，質問の意図説明やプッシュ通知など市からの積極性が必要なことや，市の職員が実際に自由な質問設定をするために自治体の中あるいは市全体で議論し質問内容の枠組みを増やしていけるような取り組みや制度の策定が必要なことが分かった．Participatory planning is to involve citizens in a process of urban development, which is likely to find out and solve a problem happening in an actual city. To promote participatory planning, it is important to activate everyday communication between city officials and citizens. The purpose of this research is to apply the participatory sensing technology to participatory planning which people exchange information through their mobile devices or computers. In the existing examples of participatory sensing, the categories of questions are limited or it is necessary to install a specific application for collecting and reflecting citizens' demands. Besides, it is required that data from citizens should be open without privacy information and also operation of a system should be easy. To solve these problems, we propose MinaQn (Mina means everybody in Japanese), a participatory sensing system for citizen-centric urban development. We carried out a two weeks experiment in corporation with 3 cities in Japan. Overall, more than 1,000 answer data and feedback were gathered and we measured the effectiveness of MinaQn with qualitative and quantitative data. Also we direct the design policies of future participatory sensing systems. In particular, to get more people involved in providing their location information in the event of a natural disaster, we found that an active agent of city officials and support for the establishment of standards and systems for setting free questions are needed.

Message from the general and program chairs 査読有り

Yonezawa T., Riedel T., Tsubouchi K.

ACM International Conference Proceeding Series 24-25-May-2016 巻 2016年5月

ReFabricator: Integrating everyday objects for digital fabrication 査読有り

Yamada S., Ogawa M., Morishige H., Yonezawa T., Nozaki H., Tokuda H.

Conference on Human Factors in Computing Systems Proceedings 07-12- 巻頁： 3804 - 3807 2016年5月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Conference on Human Factors in Computing Systems Proceedings

Since current digital fabrication relies on 3D printer very much, there are several concerns such as printing cost (i.e., both financial and temporal cost) and sometimes too homogeneous impression with plastic filament. To address and solve the problem, we propose ReFabricator, a computational fabrication tool integrating everyday objects into digital fabrication. ReFabrication is a concept of fabrication, mixing the idea of Reuse and Digital Fabrication, which aims to fabricate new functional shape with ready made products, effectively utilizing its behavior. As a system prototype, we have implemented a design tool which enables users to gather up every day objects and reassemble them to another functional shape with taking advantages of both analog and digital fabrication. In particular, the system calculates the optimized positional relationship among objects, and generates joint objects to bond the objects together in order to achieve a certain shape.

DOI： 10.1145/2851581.2890237

Toward Health Exercise Behavior Change for Teams Using Lifelog Sharing Models 査読有り Open Access

Nishiyama, Y; Okoshi, T; Yonezawa, T; Nakazawa, J; Takashio, K; Tokuda, H

IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS 20 巻 ( 3 ) 頁： 775 - 786 2016年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Journal of Biomedical and Health Informatics

Recent technological trends in mobile/wearable devices and sensors have been enabling an increasing number of people to collect and store their "lifelog" easily in their daily lives. Beyond exercise behavior change of individual users, our research focus is on the behavior change of teams, based on lifelogging technologies and lifelog sharing. In this paper, we propose and evaluate six different types of lifelog sharing models among team members for their exercise promotion, leveraging the concepts of "competition" and "collaboration." According to our experimental mobile web application for exercise promotion and an extensive user study conducted with a total of 64 participants over a period of three weeks, the model with a "competition" technique resulted in the most effective performance for competitive teams, such as sports teams.

DOI： 10.1109/JBHI.2015.2478903

Appearance-based person identification algorithm to search for persons using a flying robot 査読有り

Yonezawa T., Takeuchi E., Ohno K., Tadokoro S.

Ssrr 2015 2015 IEEE International Symposium on Safety Security and Rescue Robotics 2016年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ssrr 2015 2015 IEEE International Symposium on Safety Security and Rescue Robotics

This paper proposes a person identification algorithm that can be used when searching for persons from multiple images captured by flying robots. The images taken by such robots have low resolution and contain various viewing angles of people because they fly at a safe distance from and often move around people. The proposed person identification algorithm is based on appearance and can identify a person from low-resolution images of the upper body. In appearance-based person identification, the accuracy is low when a single image is used. Therefore, the accuracy is improved by accumulating the score. Experimental results obtained using 40 subjects show that the identification accuracy based on images having different view angles is better than that based on images having similar view angles. Further, the identification accuracy increase even when rear images of the person that are barely distinguishable from those of another person are added to the input images. In addition, it can identify persons even when the size of the upper body image is as small as 15 pixels. We performed the identification experiment using images taken by an aerial-robot while it was actually flying and proved the effectiveness of the algorithm.

DOI： 10.1109/SSRR.2015.7442995

MyFactor: ライフログを用いたユーザの内面状態に関する因子分析査読有り

小渕幹夫, 古川侑紀, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2016-UBI-4 巻 ( 10 ) 頁： 1 2016年2月

MyTime: タイムマネジメントの促進を目的としたアプリケーション使用時間自動記録システムの提案査読有り

小出粋玄, 小渕幹夫, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2016-UBI-4 巻 ( 36 ) 頁： 1 2016年2月

City Happenings into Wikipedia Category: Classifying Urban Events by Combining Analyses of Location-based Social Networks and Wikipedia 査読有り

Sato, S; Yonezawa, T; Nakazawa, J; Kawasaki, S; Ohta, K; Inamura, H; Tokuda, H

SECOND INTERNATIONAL CONFERENCE ON IOT IN URBAN SPACE (URB-IOT 2016) 24-25-May-2016 巻頁： 47 - 52 2016年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM International Conference Proceeding Series

Recently, many researchers have been focusing on the detection and classification of urban events by information analysis on social networks. Previous works mainly use text analysis of users' posts on social networks for detecting urban events. However, this approach has a limitation that the users' posts must mention the event for the analysis to be conducted. We propose a new method for classifying urban events by extracting user interest from the location-based social network information without text analysis. The proposed method includes analyzing common friends of users in the vicinity of the event venue and extracting common the friends' attributes by referring to related Wikipedia information. We designed and implemented the proposed method, and conducted an experiment for evaluating our method. Our experimental result shows that our method can classify events well in cases where participants have similar interests.

DOI： 10.1145/2962735.2962740

Forward-genetics analysis of sleep in randomly mutagenized mice 査読有り Open Access

Funato H., Miyoshi C., Fujiyama T., Kanda T., Sato M., Wang Z., Ma J., Nakane S., Tomita J., Ikkyu A., Kakizaki M., Hotta-Hirashima N., Kanno S., Komiya H., Asano F., Honda T., Kim S.J., Harano K., Muramoto H., Yonezawa T., Mizuno S., Miyazaki S., Connor L., Kumar V., Miura I., Suzuki T., Watanabe A., Abe M., Sugiyama F., Takahashi S., Sakimura K., Hayashi Y., Liu Q., Kume K., Wakana S., Takahashi J.S., Yanagisawa M.

Nature 539 巻 ( 7629 ) 頁： 378 - 383 2016年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Nature

Sleep is conserved from invertebrates to vertebrates, and is tightly regulated in a homeostatic manner. The molecular and cellular mechanisms that determine the amount of rapid eye movement sleep (REMS) and non-REMS (NREMS) remain unknown. Here we identify two dominant mutations that affect sleep and wakefulness by using an electroencephalogram/electromyogram-based screen of randomly mutagenized mice. A splicing mutation in the Sik3 protein kinase gene causes a profound decrease in total wake time, owing to an increase in inherent sleep need. Sleep deprivation affects phosphorylation of regulatory sites on the kinase, suggesting a role for SIK3 in the homeostatic regulation of sleep amount. Sik3 orthologues also regulate sleep in fruitflies and roundworms. A missense, gain-of-function mutation in the sodium leak channel NALCN reduces the total amount and episode duration of REMS, apparently by increasing the excitability of REMS-inhibiting neurons. Our results substantiate the use of a forward-genetics approach for studying sleep behaviours in mice, and demonstrate the role of SIK3 and NALCN in regulating the amount of NREMS and REMS, respectively.

DOI： 10.1038/nature20142

European IoT International Cooperation in Research and Innovation 査読有り

Cousin, P; Maló, P; Pham, C; Yu, XH; Li, J; Song, J; Thiare, O; Daffe, A; Kofuji, S; Marao, G; Amazonas, J; Gürgen, L; Yonezawa, T; Akiyama, T; Maggio, M; Moessner, K; Miyake, Y; Vermesan, O; Le Gall, F; Almeida, B

Digitising the Industry Internet of Things Connecting the Physical, Digital and Virtual Worlds 49 巻頁： 293 - 333 2016年

Damage Detector: The Damage Automatic Detection of Compartment Lines Using A Public Vehicle and A Camera 査読有り

Kawasaki, T; Kawano, M; Iwamoto, T; Matsumoto, M; Yonezawa, T; Nakazawa, J; Tokuda, H

ADJUNCT PROCEEDINGS OF THE 13TH INTERNATIONAL CONFERENCE ON MOBILE AND UBIQUITOUS SYSTEMS: COMPUTING NETWORKING AND SERVICES (MOBIQUITOUS 2016) 28-November-2016 巻頁： 53 - 58 2016年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM International Conference Proceeding Series

In Japan, there are 1.2milion kilometers or more of the road, of which 900, 000 km of road has been paved. Paved road has been painted compartment line to separate many vehicles and driver-pedestrian. Compartment line is important for drivers and pedestrians because they can recognize for they are aware of the width of the roadway and the sidewalk by the compartment line. Therefore, municipality should inspect the ongoing compartment line but they are inspected by people so the burden for road management is big. The purpose of this research would be to automatically detect the damage of the compartment line. The image obtained from cameras, applying random forest. In this experiment, we used more than about 50, 000 of images by capturing a Walking camera and a vehicle-mounted camera. Baseline and precision comparison result, the detection of damage to compartment line, it was confirmed that the proposed method is effective.

DOI： 10.1145/3004010.3004017

Cruisers: A Public Automotive Sensing Platform for Smart Cities 査読有り

Chen, Y; Nakazawa, J; Yonezawa, T; Kawsaki, T; Tokuda, H

PROCEEDINGS 2016 IEEE 36TH INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING SYSTEMS ICDCS 2016 2016-August 巻頁： 767 - 768 2016年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings International Conference on Distributed Computing Systems

Collecting urban data in a citywide scale plays a fundamental role in the research, development and implementation of smart cities. This demo introduces Cruisers, an automotive sensing platform for smart cities, which is developed based on the following ideas. a) Garbage collecting trucks are used as host automobiles to accommodate sensors, b) 3G cellular communication network is used to wirelessly deliver sensed data directly to servers, and c) Proxy server(s) are adopted to convert the format of sensed data to required ones. This platform has been deployed to 24 garbage collecting trucks at Fujisawa city, i.e., nearly 1/4 of the total number of such trucks in the city. An iOS application is also developed to demonstrate the sensing process and the covered area.

DOI： 10.1109/ICDCS.2016.53

Interiorizor: Reassembling Everyday Objects into an Interior 査読有り

Morishige Hironao, Yamada Suguru, Nozaki Hiroki, Ogawa Masaki, Okoshi Tadashi, Yonezawa Takuro, Tokuda Hideyuki

CHI 2016 Symposium on Emerging Japanese HCI Research Collection Program 2016年

NiSleep: ゲーミフィケーションを適用可能な睡眠評価査読有り

江頭和輝, 古川侑紀, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2016-UBI-5 巻 ( 2 ) 頁： 1 2016年

Proceedings of the Second International Conference on IoT in Urban Space, Urb-IoT 2016, Tokyo, Japan, May 24-25, 2016 査読有り

Urb-IoT 2016 2016年

A public vehicle-based urban sensing system 査読有り

Chen Y., Kyono Y., Yonezawa T., Nakazawa J., Takashio K., Tokuda H.

Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers 頁： 117 - 120 2015年9月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers

In this poster, we propose a public vehicle-based urban sensing system, where sensor nodes are equipped to public vehicles and collect data as the host vehicle roams around a city. Compared with the urban sensor systems that employ static sensor nodes or personal mobile devices, our proposed system achieves a wide sensing area through the mobility of host vehicles, reduces initial investment by employing existing infrastructures and facilitates system operation and maintenance which can be executed in the car barn(s). In this poster, the system architecture and implementation details are described. A preliminary experiment is conducted to validate the proposed system.

DOI： 10.1145/2800835.2800886

Exploring user model of the city by using interactive public display application 査読有り

Ogawa M., Nakazawa J., Yonezawa T., Tokuda H.

Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers 頁： 1595 - 1598 2015年9月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers

In recent years, many technologies have been introduced in the city environment. For example, by interacting with digital public displays, citizens can get more detailed information when they want. These kinds of interactive public displays make interaction between people and digital public displays. By observing user's interaction between people and digital public displays, we consider that we can find external factor of motivating citizens to do some actions. In this paper, we tried to explore the relation between environmental information and user's interaction by using interactive public display application. From the result of field study, we discuss about what makes people to motivate people to action and how to frame user models.

DOI： 10.1145/2800835.2801636

Sensorizer: An architecture for regenerating cyber physical data streams from the web 査読有り

Nakazawa J., Yonezawa T., Tokuda H.

Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers 頁： 1599 - 1606 2015年9月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers

World Wide Web contains a huge amount of periodically-updated values originally sensed from the physical world; they include, for example, density of air pollutant, road traffic condition, and car park occupancy. In many cases, however, those data are not easily accessible from a computer program due to the lack of APIs to fetch them. In this paper, to cope with this problem, we propose an architecture for discovering, excavating, and streaming the entombed web contents (EWC). This architecture, called Sensorizer, leverages crowd sourcing for accurate EWC discovery, periodic web scraping with a headless browser for excavation from dynamic web pages, and a standardized communication protocol (XMPP) for data streaming to wide variety of applications.

DOI： 10.1145/2800835.2801627

Senbay: Smartphone-based activity capturing and sharing using sensor-federated video 査読有り

Nishiyama Y., Yonezawa T., Okoshi T., Nakazawa J., Chen Y., Tokuda H.

Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers 頁： 21 - 24 2015年9月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers

We present Senbay, a novel smartphone-based platform for capturing and sharing synchronously-recorded video/sensor data stream using animated two-dimensional barcode. In the ubicomp environment, mobile devices have enabled us to capture video and various types of sensor data easily. However, currently we do not have a framework to instantly integrate video and those sensor data on smartphones and share them easily with other users on the net. In this paper, we present Senbay, a platform to integrate video and sensor data stream into single video on smartphones. With Senbay, sensor data stream will be embedded into a video as animated QR code in real-time, thus users can share the \sensor-federated" video easily on the web, through lots of popular video sharing services. This paper introduces the architecture and evaluation of Senbay and discusses future vision of the sensor-federated video sharing platform along with several applications.

DOI： 10.1145/2800835.2800847

MinaQn: Web-based participatory sensing platform for citizen-centric urban development 査読有り

Sakamura M., Yonezawa T., Ito T., Nakazawa J., Tokuda H.

Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers 頁： 1607 - 1614 2015年9月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp and Iswc 2015 Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers

This paper presents MinaQn1, a web-based participatory sensing platform to enhance bidirectional communication between municipality and citizens for citizen-centric urban development. To make cities more comfortable to live, it is necessary for municipality to collect and reect citizens' demands in their administrative works. MinaQn enables city officers to make various questionnaire to citizen easily, and citizen can answer the questionnaire with their location information through any devices by using WEB interface. The answers from citizen are collected as sensor data with unified format and protocol, so that the data can be shared and used for various applications. We designed and implemented MinaQn with web and XMPP technology, and carried out a two weeks experiment in corporation with 3 cities in Japan. Based on the experiment, we measured the effectiveness of MinaQn with qualitative and quantitative data. In addition, we also evaluated how citizens consider about providing their location information to the administrative works of the cities.

DOI： 10.1145/2800835.2801632

Senbay : 活動促進のためのスマートフォンを利用したセンサデータ統合型動画記録・共有・分析プラットフォーム (知的環境とセンサネットワーク)

西山勇毅, 米澤拓郎, 中澤仁

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 115 巻 ( 162 ) 頁： 49 - 54 2015年7月

Aqua Mapping:水槽を介した観賞魚とのインタラクションシステム

礒川直大, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

情報処理学会研究報告. UBI, [ユビキタスコンピューティングシステム] 2015 巻 ( 5 ) 頁： 1 - 8 2015年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

魚を飼い,その水槽を鑑賞することは,我々の生活に潤いと落ち着きを与えてくれる.観賞魚を飼育する上で水槽内の環境や魚の体調管理が重要となるが,観賞魚は自分の状態を飼い主に伝えることができないため,飼い主が魚の状態に基づきインタラクティブに飼育することは難しい.本研究では,観賞魚の位置情報をもとに水槽背面のディスプレイに観賞魚の状態を表示することで,飼い主に水槽内の環境や観賞魚の体調などの情報を伝えるシステム "Aqua Mapping" を提案する.本システムにより水槽を介した観賞魚とユーザのインタラクティブな飼育環境を提供する.

SmileSpot: 他人の笑顔画像の共有によるユーザの笑顔形成への影響評価

佐々木航, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

情報処理学会研究報告. UBI, [ユビキタスコンピューティングシステム] 2015 巻 ( 9 ) 頁： 1 - 7 2015年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

「人は幸福であるが故に笑うのではなく,笑うが故に幸福である」という言説にもある通り笑顔を形成することがユーザの幸福感につながると考えられ,これを支持する研究は多い.幸福感は周囲に伝達することが知られている.以上のことから,幸福な人からの笑顔情報によるユーザの笑顔形成への促進が,ユーザの幸福感を引き起こし,それによって幸福感が伝達していくと考えられる.そこで本研究では,他人の笑顔画像の共有によるユーザの笑顔形成への影響を評価する "SmileSpot" を実装した."SmileSpot" は個人のスマートフォン端末のディスプレイに他人の顔画像を映し出し,それを見た際のユーザの笑顔度を検知する.38 人の被験者を対象とした 15 日間の評価実験から他人の笑顔画像がユーザの笑顔形成を促進させることがわかった.それに加え,女性のほうが男性と比べて影響を受けやすく,また親密度が高い人の笑顔画像のほうが親密度の低い人の笑顔画像より影響を受けることがわかった.

Vinteraction: Vibration-based information transfer for smart devices 査読有り

Yonezawa T., Nakazawa J., Tokuda H.

2015 8th International Conference on Mobile Computing and Ubiquitous Networking, ICMU 2015 頁： 155 - 160 2015年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：2015 8th International Conference on Mobile Computing and Ubiquitous Networking, ICMU 2015

According to the spread of smart devices such as smartphones and smart tablets, opportunities to communicate between them will be more increased. Though we usually use WiFi and Bluetooth, it is still burden task for end-users. Many previous techniques to collaborate devices easily has been also proposed, they are not always best solution in some situations. This paper proposes a new interaction method called Vinteracion, which leverages combination of vibrator and accelerometer to send information from smart device to the other smart device. Vinteraction enables users to use touch interaction like Near Field Communication, which provides easy and intuitive way. We present an algorithm and implementation of vibration-based communication that can be adapted to any combination of smart devices. We also present several applications which leverages Vinteraction effectively. Through an evaluation by using popular six products, we confirmed that Vinteraction is easy to use transfer method with current products with reasonable performance.

DOI： 10.1109/ICMU.2015.7061059

汎用カメラと一般車両を用いた路面標示の擦り切れ検出手法

河崎隆文, 打越大成, 岩本健嗣, 松本三千人, 米澤拓郎, 中澤仁, 徳田英幸

情報処理学会研究報告. ITS, [高度交通システム] 2015 巻 ( 3 ) 頁： 1 - 8 2015年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

全国の道路で老朽化が進行している.そのため,自治体による道路の維持管理がより一層求められているが,点検には特殊な車両が必要になり,そのコストが負担となる.また,車両の数が限られていることから,一度に点検できる範囲に限度が生じ,広域における点検が困難である.そこで,自治体の所有するごみ収集車やコミュニティバスなどの公用車の利活用によって,コストの低減や点検の広域化を図るため,本研究では特殊な車両を使用しない道路の点検手法を実現する.本稿では,路面標示の状態収集に着目し,天球カメラと半天球カメラを用いて路面標示を撮影し,その画像から擦り切れの有無を検出する手法を提案する.本稿の実験では天球カメラの RICOH THETA と半天球カメラの QBiC D1 を使用し,それぞれ車両に取り付けて走行した際の撮影と検出実験を行った.

ソーシャルネットワークにおける共通の友人に着目した実世界イベント検出・分類手法

佐藤翔野, 米澤拓郎, 中澤仁, 川崎仁嗣, 太田賢, 稲村浩, 徳田英幸

情報処理学会研究報告. ICS, [知能と複雑系] 2015 巻 ( 9 ) 頁： 1 - 6 2015年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

近年,SNS 上の情報を使い実世界のイベントを検出・分類する研究が盛んに行われている.既存の研究ではテキスト解析が主であり,発言にイベントに関する内容が含まれていないと,解析が不可能であるという問題が存在する.本研究では,Twitter 上の位置情報付き発言を用いて,ある空間に存在する人々の興味を抽出し,それに基づいた実世界イベントの検出と分類を試みる.提案手法では,空間内のユーザ群の「共通の友人」を分析し,その友人の属性情報を解析することにより,ユーザ群の興味を抽出する.

Sensorizer : An Architecture for Regenerating Cyber Physical Data Streams from Entombed Web Contents (知的環境とセンサネットワーク)

中澤仁, 米澤拓郎, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 114 巻 ( 418 ) 頁： 249 - 254 2015年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

ウェブ空間には、大気汚染物質量や渋滞情報、駐車場の空き情報などを初めとして、現実空間に関連した膨大な量のデータが存在する。しかし多くのそれらはウェブ空間に埋没していて、容易にアクセスできない上に、定期的に更新されて古いデータが消えていく。このような、ウェブ空間に埋没した有益なデータ(ウェブ埋没データ)を発見、発掘、および再生するために、我々はSensorizerアーキテクチャに関する研究を進めている。同アーキテクチャでは、クラウドソーシングを活用してウェブ埋没データを発見し、ヘッドレスウェブブラウザを用いて周期的なスクレイピングを実現した上で、XMPPを用いて抽出されたデータを配信する。本稿では、Sensorizerアーキテクチャの概要を述べた上で、実現可能なアプリケーションと評価について述べる。

ソーシャルネットワークにおけるフォロー集合分析に基づく実世界イベント分類手法査読有り Open Access

河野慎, 米澤拓郎, 中澤仁, 川崎仁嗣, 太田賢, 稲村浩, 徳田英幸

情報処理学会論文誌 56 巻 ( 1 ) 頁： 72-82 2015年1月

記述言語：日本語掲載種別：研究論文（学術雑誌）

近年，GPSを搭載したスマートフォンとSNSの普及によって，リアルタイムに位置情報を付加させた発言をユーザが投稿する機会が増加している．この機会によって投稿された発言の中には実世界イベントに関する情報が含まれており，その一部はユーザが体験したり，目撃したりしたことに関するものであることが多い．これらの発言を収集し，解析することで実世界で実際に起きている社会イベントを検出することが可能となる．イベントを検出するために必要な発見と分類という2つの工程のうち，本研究ではイベントの分類に着目し，イベント参加者を利用したイベント分類手法を提案する．イベント参加者の多様性を意味する大衆性という新しい分類軸を定義し，イベント参加者がフォローしているユーザの解析によるイベントの分類を目指す．本研究では解析ツールの設計と実装をし，ツールを用いてあらかじめ実際のデータをもとに発見された社会イベントの解析を行い，分類を行った．Yahoo!クラウドソーシングにおいて一対比較法を用いて大衆性に基づき分類した結果を取得し，本手法を適用した解析結果と比較・考察を行った．その結果，大衆性に関してクラウドソーシングを用いた調査結果と回帰分析による提案手法の分析結果に一定の相関性があることを示した．Recent progress and spread of smartphones and social network services enables us to transmit text messages with GPS location data anywhere and anytime. Since these location-based SNS messages often refer real-world's events, many researchers have tried to recognize real-world's event through analysis of the messages. In this paper, we define a new index of event classification called popularity, and present a novel method to calculate the index by analysing social network of the events participants. Popularity, which reflects the diversity of event participants, is a useful index of the event for creating various applications such as event navigation or recommendation. We designed and implemented intuitive web-based interactive tool for analysing popularity of events. Through comparative experiments by analysis of proposed system and crowdsourcing, we confirmed that our proposal method provide a certain amount of accuracy for calculating the popularity of events.

公共メディアへのジェスチャ入力のためのユーザに対する操作指示手法（2014年10月16日版）査読有り Open Access

小川正幹, マルコユルム, 米澤拓郎, 中澤仁, 徳田英幸

情報処理学会論文誌 56 巻 ( 1 ) 頁： 316-328 2015年1月

記述言語：日本語掲載種別：研究論文（学術雑誌）

デジタルディスプレイやプロジェクタなどの情報表示機器の価格の低下にともない，街中や駅などの公共空間で様々な情報の配信を行う公共メディアが普及してきた．また，センサの低価格化やモーションキャプチャ技術の発展によってマルチタッチなどの平面的なインタラクションだけではなく，手全体や体を使った三次元的な入力も可能になった．このような技術を用いた，三次元的な入力を受付けるインタラクティブな公共メディアは今後増加すると考えられる．しかし，公共性の持つ特性と三次元的なインタラクションの複雑さから，ジェスチャのような手法による入力を公共空間において正しくユーザに伝えることは難しい．本研究では，公共空間におけるジェスチャによる入力のためのユーザ誘導およびユーザへの操作指示手法を提案する．提案したユーザ誘導および操作指示手法をもとにジェスチャ入力が可能な公共メディアのプロトタイプを作成しフィールドスタディを行った．フィールドスタディにおいて，72人の被験者に実験に協力をしてもらい，アンケートに回答してもらい，結果について考察を行った．本稿では，提案する手法を用いて行ったフィールドスタディから得られた知見について述べる．Due to price reduction of the device which can display information such as digital display and projector, public media which provides many kinds of information is emerging. In addition, due to price reduction of sensors and improvement of technique of motion capture, gestural and three-dimentional inputs are emerging to interact with digital media. Interactive public media which supports three-dimentional inputs will increase. However, instructing gestural inputs has difficulties which contains nature of publicness and complexity of the interaction itself. In this research, we propose the method of instructing the way of interaction for users. We implemented the prototype which supports gestural input and applied our proposal on it. We carried out field study with our prototype and we got feedback from 72 participants of the field study. In this paper, we describe the result of the experiment and discussion of our proposal.

ライフログデータを用いたチームの行動変容促進

西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

情報処理学会論文誌 56 巻 ( 1 ) 頁： 349 - 361 2015年1月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

近年，携帯端末の普及にともない誰もが日常生活中の活動情報を検知・蓄積可能なライフログ環境が整ってきた．これまでライフログデータは，個人を対象として行動変容の促進に活用されてきたが，今後は研究室やスポーツチーム，企業といった集団を対象とした行動変容の促進が可能になると考えられる．しかし，集団は個人とは異なり内部に様々な人間関係が存在するため，これまでの個人を対象とした行動変容促進手法が集団に対して効果的であるかは明らかではない．本研究では，集団の行動変容を促進するモデルとして，既存手法の「競争」と「協力」の要素を組み合わせた6種類の集団の行動変容促進モデルの提案し，効果の検証を行った．提案モデルに基づいた行動変容促進を行うAaron2を実装し，2つの集団（64名）を対象に3週間の実験を行った．1週間ごとの行動変容について考察した結果，チーム目標と直接的に関係ない活動では行動変容への効果が低く，日頃からチーム単位で競争を行っているチームでは「チーム間での競争要素」用いたモデルが最も行動変容への効果が高くなる可能性が示された．Recent technological trends on mobile/wearable devices and sensors have been enabling increasing number of people to collect and store their "lifelog" easily in their daily lives. Beyond exercise behavior change of individual user, our research focus is on the behavior change of teams, based on life-logging technologies and information sharing. In this paper, we propose and evaluate six different types of information sharing model among team members for their exercise promotion, leveraging concepts of "competition" and "collaboration". According to our experimental mobile web application for exercise promotion and extensive user study among 64 total users for three weeks, the model with "competition" technique resulted the most effective performance for competitive teams such as sport teams.

A Citizen-centric Approach towards Global-scale Smart City Platform 査読有り

Yonezawa Takuro, Antonio Galache Jose, Gurgen Levent, Matranga Isabel, Maeomichi Hiroyuki, Shibuya Tomonori

2015 INTERNATIONAL CONFERENCE ON RECENT ADVANCES IN INTERNET OF THINGS (RIOT) 頁： . 2015年

A Self-healing Framework for Online Sensor Data 査読有り

Nguyen, TA; Aiello, M; Yonezawa, T; Tei, K

2015 IEEE INTERNATIONAL CONFERENCE ON AUTONOMIC COMPUTING 頁： 295 - 300 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings IEEE International Conference on Autonomic Computing Icac 2015

In pervasive computing environments, wireless sensor networks (WSNs) play an important role, collecting reliable and accurate context information so that applications are able to provide services to users on demand. In such environments, sensors should be self-adaptive by taking correct decisions based on sensed data in real-time. However, sensor data is often faulty. Faults are not so exceptional and in most deployments tend to occur frequently. Therefore, the capability of self-healing is important to ensure higher levels of reliability and availability. We design a framework which provides self-healing capabilities, enabling a flexible choice of components for detection, classification, and correction of faults at runtime. Within our framework, a variety of fault detection and classification algorithms can be applied, depending on the characteristics of the sensor data types as well as the topology of the sensor networks. A set of mechanisms for each and every step of the self-healing framework, covering detection, classification, and correction of faults are proposed. To validate the applicability, we illustrate a case study where our solution is implemented as an adaptation engine and integrated seamlessly into the ClouT system. The engine processes data coming from physical sensors deployed in Santander, Spain, providing corrected sensor data to other smart city applications developed in the ClouT project.

DOI： 10.1109/ICAC.2015.61

A Robot Control System for Video Streaming Services by Using Dynamic Encoded QR Codes 査読有り

Ogawa Masaki, Yonezawa Takuro, Nishiyama Yuuki, Nakazawa Jin, Tokuda Hideyuki

2015 EIGHTH INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND UBIQUITOUS NETWORKING (ICMU) 頁： 86-87 2015年

Vinteraction: Vibration-based Information Transfer for Smart Devices 査読有り

Yonezawa Takuro, Nakazawa Jin, Tokuda Hideyuki

2015 EIGHTH INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND UBIQUITOUS NETWORKING (ICMU) 頁： 155 - 160 2015年

A robot control system for video streaming services by using dynamic encoded QR codes 査読有り

Ogawa M., Yonezawa T., Nishiyama Y., Nakazawa J., Tokuda H.

2015 8th International Conference on Mobile Computing and Ubiquitous Networking, ICMU 2015 頁： 86 - 87 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：2015 8th International Conference on Mobile Computing and Ubiquitous Networking, ICMU 2015

We propose a novel robot control system by transmitting robot control information on existing video streaming services as dynamic encoded two-dimentional visual code. We implemented sensor data transmitting system by using dynamic encoded two-dimentional visual code which called SENSe-TREAM [1] and we built the robot controlling system by using SENSeTREAM architecture. This paper shows the architecture of robot controlling system and future vision of telepresence and human-robot interaction.

DOI： 10.1109/ICMU.2015.7061042

A method for detecting damage of traffic marks by half celestial camera attached to cars 査読有り

Kawasaki T., Iwamoto T., Matsumoto M., Yonezawa T., Nakazawa J., Takashio K., Tokuda H.

Proceedings of the 12th International Conference on Mobile and Ubiquitous Systems Computing Networking and Services Mobiquitous 2015 1 巻 ( 5 ) 頁： 226 - 233 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings of the 12th International Conference on Mobile and Ubiquitous Systems Computing Networking and Services Mobiquitous 2015

Roads are becoming deterioration in everywhere. In some places, traffic marks painted on roads are damaged thus needed to be updated. Municipalities must manage road condition and traffic marks (road painting). It is the municipalities task to manage those roads using, for example, special inspection cars and human eyes. However, the management cost is high if a city contains many roads. This paper proposes a mechanism that automates this management. Our idea is to leverage cameras attached to garbage trucks, which run through the entire city almost everyday. The mechanism collects road images and detects damaged traffic marks using an image recognition algorithm. This paper shows the algorithm and reports the benchmark results. The benchmark showed that the mechanism can detect the damaged traffic marks with 76.6% precision.

DOI： 10.4108/icst.mobiquitous.2015.260306

A citizen-centric approach towards global-scale smart city platform 査読有り

Yonezawa T., Matranga I., Galache J.A., Maeomichi H., Gurgen L., Shibuya T.

2015 International Conference on Recent Advances in Internet of Things, RIoT 2015 頁： 1 - 6 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：2015 International Conference on Recent Advances in Internet of Things, RIoT 2015

In order to help smart cities to provide responsive services to improve the quality of life of their citizens, a global-scale platform relying on Cloud computing as an enabler to bridge the Internet of Things with Internet of People via Internet of Services, is presented in this paper. This platform will focus on a citizen-centric approach, offering to end-users the possibility of creating their own Cloud services and share them with other citizens, as well as involving other city stakeholders ranging from municipalities to service developers and application integrators. The definition, design and development of the aforementioned platform has been carried out within ClouT project (still ongoing), framed into a joint European-Japanese initiative, where different field trials developed on top of the developed platform, have been deployed in the four cities that take part of the project: Mitaka and Fujisawa in Japan, and Santander and Genova in Europe.

DOI： 10.1109/RIOT.2015.7104913

会議参加報告査読有り

小林保正, 磯山直也, 五十川麻理子, 石田智行, 丸谷宜史, 米澤拓郎, 山本景子, 門内靖明, 笛木康人

日本バーチャルリアリティ学会誌 19 巻 ( 4 ) 頁： 60 - 65 2014年12月

車両に取り付けたカメラによる路面標示の擦り切れ検出手法の提案 Open Access

河崎隆文, 打越大成, 岩本健嗣, 米澤拓郎, 中澤仁, 徳田英幸

マルチメディア通信と分散処理ワークショップ論文集 2014 巻 ( 5 ) 頁： 101 - 108 2014年12月

BI-5-4 スマートシティにおける市民の影響力を拡張するCloud of Things基盤技術(BI-5.ソーシャル・ビッグデータの利活用とそれを支える基盤技術の研究開発動向,依頼シンポジウム,ソサイエティ企画)

中澤仁, 米澤拓郎, 徳田英幸

電子情報通信学会ソサイエティ大会講演論文集 2014 巻 ( 2 ) 頁： "SS - 80"-"SS-81" 2014年9月

Evidence-based real space assurance and sensing technologies 査読有り

Nakazawa J., Yonezawa T.

Journal of the Institute of Electronics Information and Communication Engineers 97 巻 ( 8 ) 頁： 670 - 674 2014年8月

エビデンスに基づく実空間アシュアランスとセンシング技術 (小特集知的環境を支えるセンサネットワーク : アンビエントセンサネットワーク)

中澤仁, 米澤拓郎

電子情報通信学会誌 = The journal of the Institute of Electronics, Information and Communication Engineers 97 巻 ( 8 ) 頁： 670 - 674 2014年8月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

建築物の老朽化監視や,農業・漁業等の一次産業への応用,人間の健康状態把握など,センシング技術が多様な目的で応用されつつある.それらにおいてセンシングは,目的を達成するために必要となるエビデンスを実空間から収集する技術と位置付けられる.本稿では,まず様々なセンシング技術を紹介し,データを空間横断的に利活用するためのシステムや,実空間の課題を解決するための応用技術としてエビデンス指向システム等について解説する.

スマートシティ実現に向けた車載型大気情報センシングシステム Open Access

岸野泰恵, 須山敬之, 納谷太, 米澤拓郎, 中澤仁, 徳田英幸

マルチメディア、分散協調とモバイルシンポジウム2014論文集 2014 巻頁： 952 - 958 2014年7月

スマートシティにおける市民の影響力を拡張するCloud of Things基盤技術(企画セッション「ポストユビキタス」,知的環境,センサネットワーク,スマート建築,スマートシティ,構造モニタリング,ゼロエネルギービルディング,社会基盤センシング,BIM/CIM,国土基盤モデル,一般) 査読有り

米澤拓郎

電子情報通信学会技術研究報告. ASN, 知的環境とセンサネットワーク 114 巻 ( 65 ) 頁： 139 - 140 2014年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

現代の都市は,エネルギー管理の効率化,経済成長と開発,生活の質と安心安全など,多様な問題に直面している.こうした問題の解決に資する主要なICT技術として,近年,モノのインターネットとクラウドコンピューティングが脚光を浴びている.日欧共同研究ClouTプロジェクトは,インターネットに接続する人・モノ・サービスをクラウドコンピューティングを基盤として融合する,効率的な協調プラットフォームである.あらゆる人・モノ・サービスから得られる情報を活用して,都市をよりスマートにする事が本研究の目的である.

EverCopter : 着脱可能な有線給電式空中センシングプラットフォーム (モバイルネットワークとアプリケーション)

興野悠太郎, 米澤拓郎, 野崎大幹, 小川正幹, 伊藤友隆, 中澤仁, 高汐一紀, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 113 巻 ( 495 ) 頁： 205 - 211 2014年3月

Help Me! : 参加型センシングにおける参加機会創出のための情報の価値付けと可視化システム (モバイルネットワークとアプリケーション)

坂村美奈, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 113 巻 ( 495 ) 頁： 163 - 170 2014年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

近年,センサネットワークと携帯端末を利用したセンシングが普及しより高密度,広範囲の情報を取得することが可能になった.携帯端末を利用したセンシングの中でユーザが意識的にセンサとして働く参加型センシングでは,例えば場所や天気の様子に関するタスクを閲覧・選定し情報収集・提供する.しかしユーザがタスク選定をする際,多数のタスクが混在した状況ではどのタスクを実行すれば良いか分かり辛い.本研究では選定すべきタスクを物理センサを用いて価値付け,地図上に可視化することで参加型センシングへの参加機会を創出する手法を提案する.提案手法を実現するために,本研究ではセンサネットワークと参加型センシングが同一プラットフォームで動作する統合アーキテクチャを設計・実装した.これにより,センサネットワークおよび参加型センシングが持つ両者の利点を活かしつつ,互いの欠点を補完しあったセンシング環境が実現可能となる.

ClouT : スマートシティにおける市民の影響力を拡張するCloud of Things基盤技術(招待講演,モバイルアプリケーション,ユビキタスサービス,モバイルアドホックネットワーク,モバイル時代を支える次世代無線通信技術,ユビキタスシステム,フィールドセンシング及び一般) 査読有り

米澤拓郎

電子情報通信学会技術研究報告. MoNA, モバイルネットワークとアプリケーション 113 巻 ( 495 ) 頁： . 2014年3月

Help Me!:参加型センシングにおける参加機会創出のための情報の価値付けと可視化システム査読有り

坂村美奈, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2014 巻 ( 35 ) 頁： 1-8 2014年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）

近年，センサネットワークと携帯端末を利用したセンシングが普及しより高密度，広範囲の情報を取得することが可能になった．携帯端末を利用したセンシングの中でユーザが意識的にセンサとして働く参加型センシングでは，例えば場所や天気の様子に関するタスクを閲覧・選定し情報収集・提供する．しかしユーザがタスク選定をする際，多数のタスクが混在した状況ではどのタスクを実行すれば良いか分かり辛い．本研究では選定すべきタスクを物理センサを用いて価値付け，地図上に可視化することで参加型センシングへの参加機会を創出する手法を提案する．提案手法を実現するために，本研究ではセンサネットワークと参加型センシングが同一プラットフォームで動作する統合アーキテクチャを設計・実装した．これにより，センサネットワークおよび参加型センシングが持つ両者の利点を活かしつつ，互いの欠点を補完しあったセンシング環境が実現可能となる．

Help Me!:参加型センシングにおける参加機会創出のための情報の価値付けと可視化システム査読有り

坂村美奈, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告モバイルコンピューティングとユビキタス通信（MBL） 2014 巻 ( 35 ) 頁： 1-8 2014年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）

近年，センサネットワークと携帯端末を利用したセンシングが普及しより高密度，広範囲の情報を取得することが可能になった．携帯端末を利用したセンシングの中でユーザが意識的にセンサとして働く参加型センシングでは，例えば場所や天気の様子に関するタスクを閲覧・選定し情報収集・提供する．しかしユーザがタスク選定をする際，多数のタスクが混在した状況ではどのタスクを実行すれば良いか分かり辛い．本研究では選定すべきタスクを物理センサを用いて価値付け，地図上に可視化することで参加型センシングへの参加機会を創出する手法を提案する．提案手法を実現するために，本研究ではセンサネットワークと参加型センシングが同一プラットフォームで動作する統合アーキテクチャを設計・実装した．これにより，センサネットワークおよび参加型センシングが持つ両者の利点を活かしつつ，互いの欠点を補完しあったセンシング環境が実現可能となる．

EverCopter: 着脱可能な有線給電式空中センシングプラットフォーム

興野悠太郎, 米澤拓郎, 野崎大幹, 小川正幹, 伊藤友隆, 中澤仁, 高汐一紀, 徳田英幸

研究報告モバイルコンピューティングとユビキタス通信（MBL） 2014 巻 ( 26 ) 頁： 1 - 7 2014年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

本論文では，着脱可能な電線によって充電，給電しながら上空をセンシングするプラットフォームである EverCopter を提案する．バッテリー駆動による UAV(Unmanned Aerial Vehicle) は，地上の障害物を気にする事無く，広大な範囲をセンシングできる事が最大のメリットであるが，バッテリー容量による制限を受けてしまう．EverCopter は以下の 2 つの特徴により，長時間かつ広範囲なセンシングを可能とする．まず，複数に接続された EverCopter の一方は，地上の電源装置に接続され，給電されている．このことで，それぞれの EverCopter はバッテリー無しで飛行する事ができるため，半永久的な飛行が可能となる．また，末端の EverCopter はバッテリーを備えており，任意のタイミングで着脱が可能である．よって，UAV 本来の自由なセンシングも可能である．The paper proposes EverCopter, which provides continuous and adaptive over-the-air sensing with detachable wired flying objects. While a major advantage of sensing systems with battery-operated flying objects is a wide sensing coverage, sensing time is limited due to its limited amount of energy. We propose dynamically rechargeable flying objects, called EverCopter. EverCopter achieves both long sensing time and wide sensing coverage by the following two characteristics. First, multiple EverCopters can be tied in a row by power supply cables. Since the root EverCopter in a row is connected to DC power supply on the ground, each EverCopter can fly without battery. This makes their sensing time forever, unless the power supply on the ground fails. Second, the leaf EverCopter can detach itself from the row in order to enjoy wider sensing coverage. An EverCopter, while it is detached, runs with its own battery-supplied energy. When the remaining energy becomes low, it flies back to the row to recharge the battery.

EverCopter: 着脱可能な有線給電式空中センシングプラットフォーム

興野悠太郎, 米澤拓郎, 野崎大幹, 小川正幹, 伊藤友隆, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2014 巻 ( 26 ) 頁： 1 - 7 2014年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

本論文では，着脱可能な電線によって充電，給電しながら上空をセンシングするプラットフォームである EverCopter を提案する．バッテリー駆動による UAV(Unmanned Aerial Vehicle) は，地上の障害物を気にする事無く，広大な範囲をセンシングできる事が最大のメリットであるが，バッテリー容量による制限を受けてしまう．EverCopter は以下の 2 つの特徴により，長時間かつ広範囲なセンシングを可能とする．まず，複数に接続された EverCopter の一方は，地上の電源装置に接続され，給電されている．このことで，それぞれの EverCopter はバッテリー無しで飛行する事ができるため，半永久的な飛行が可能となる．また，末端の EverCopter はバッテリーを備えており，任意のタイミングで着脱が可能である．よって，UAV 本来の自由なセンシングも可能である．The paper proposes EverCopter, which provides continuous and adaptive over-the-air sensing with detachable wired flying objects. While a major advantage of sensing systems with battery-operated flying objects is a wide sensing coverage, sensing time is limited due to its limited amount of energy. We propose dynamically rechargeable flying objects, called EverCopter. EverCopter achieves both long sensing time and wide sensing coverage by the following two characteristics. First, multiple EverCopters can be tied in a row by power supply cables. Since the root EverCopter in a row is connected to DC power supply on the ground, each EverCopter can fly without battery. This makes their sensing time forever, unless the power supply on the ground fails. Second, the leaf EverCopter can detach itself from the row in order to enjoy wider sensing coverage. An EverCopter, while it is detached, runs with its own battery-supplied energy. When the remaining energy becomes low, it flies back to the row to recharge the battery.

ClouT:スマートシティにおける市民の影響力を拡張するCloud of Things基盤技術査読有り

米澤拓郎

情報処理学会研究報告. UBI, [ユビキタスコンピューティングシステム] 2014 巻 ( 53 ) 頁： 1-1 2014年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

現代の都市は,エネルギー管理の効率化,経済成長と開発,生活の質と安心安全など,多様な問題に直面している.こうした問題の解決に資する主要な ICT 技術として,近年,モノのインターネットとクラウドコンピューティングが脚光を浴びている.ClouT は,インターネットに接続する人・モノ・サービスをクラウドコンピューティングを基盤として融合する,効率的な協調プラットフォームである.あらゆる人・モノ・サービスから得られる情報を活用して,都市をよりスマートにする事が本研究の目的である.ClouT 上では,都市基盤を構成する情報サービスを都市の自治体等が提供し,他のプラットフォームや他のサービス提供者がそれを利用することができる.さらに,その都市に存在する人が,独自のサービスを創出して他の人と共有することができる.すなわち ClouT は,人を中心とした都市の情報基盤である.ClouT は以下の特徴を有する.まず,(1) インターネットに接続する無数の人やモノから都市の実空間情報を収集し,ユニバーサルなインタオペラビリティを保証しながらクラウド上に保持する.次に,(2) 大規模でディペンダビリティが高く,かつセマンティックなサービスを容易に構築可能とし,これにより多種多様な情報源から得られた情報を処理して都市の実空間に提供する.最後に,(3) 欧州の Santander と Genova,および日本では三鷹市と藤沢市をターゲットとして,革新的な都市アプリケーションを実現する.都市での利用を通じて,本研究の成果を具体的かつ実用的なものとする.また ClouT は,クラウドモデルにより実現される新たな自治体・民間の協力関係を用い,アプリケーションの新規創出に要する金銭的かつ時間的コストを削減し,自治体や住民,諸産業従事者等,都市に関する全てのステークホルダの共存共栄を図る.本講演では,本プロジェクトの概要とこれまでの成果,今後の展開について紹介を行う.

ClouT:スマートシティにおける市民の影響力を拡張するCloud of Things基盤技術査読有り

米澤拓郎

情報処理学会研究報告. MBL, [モバイルコンピューティングとユビキタス通信研究会研究報告] 2014 巻 ( 53 ) 頁： 1-1 2014年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

現代の都市は,エネルギー管理の効率化,経済成長と開発,生活の質と安心安全など,多様な問題に直面している.こうした問題の解決に資する主要な ICT 技術として,近年,モノのインターネットとクラウドコンピューティングが脚光を浴びている.ClouT は,インターネットに接続する人・モノ・サービスをクラウドコンピューティングを基盤として融合する,効率的な協調プラットフォームである.あらゆる人・モノ・サービスから得られる情報を活用して,都市をよりスマートにする事が本研究の目的である.ClouT 上では,都市基盤を構成する情報サービスを都市の自治体等が提供し,他のプラットフォームや他のサービス提供者がそれを利用することができる.さらに,その都市に存在する人が,独自のサービスを創出して他の人と共有することができる.すなわち ClouT は,人を中心とした都市の情報基盤である.ClouT は以下の特徴を有する.まず,(1) インターネットに接続する無数の人やモノから都市の実空間情報を収集し,ユニバーサルなインタオペラビリティを保証しながらクラウド上に保持する.次に,(2) 大規模でディペンダビリティが高く,かつセマンティックなサービスを容易に構築可能とし,これにより多種多様な情報源から得られた情報を処理して都市の実空間に提供する.最後に,(3) 欧州の Santander と Genova,および日本では三鷹市と藤沢市をターゲットとして,革新的な都市アプリケーションを実現する.都市での利用を通じて,本研究の成果を具体的かつ実用的なものとする.また ClouT は,クラウドモデルにより実現される新たな自治体・民間の協力関係を用い,アプリケーションの新規創出に要する金銭的かつ時間的コストを削減し,自治体や住民,諸産業従事者等,都市に関する全てのステークホルダの共存共栄を図る.本講演では,本プロジェクトの概要とこれまでの成果,今後の展開について紹介を行う.

ライフログデータを用いたチームの行動変容促進査読有り

西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2014 巻 ( 9 ) 頁： 1-8 2014年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）

近年，誰もが日常生活中の情報を検知・蓄積できるライフログ環境が整ってきた．これまでライフログデータは，個人の行動変容促進に利用されてきたが，今後は研究室やスポーツチーム，学校，企業といった集団を対象した行動変容促進が可能になると考えられる．しかし，集団は個人とは異なり内部に様々な人間関係が存在するため，集団を対象とした行動変容促進モデルを構築する必要がある．本研究では集団の行動変容を促進するモデルとして，「競争」と「協力」を組み合わせた 6 種類のモデルを提案し，それぞれのモデルが集団の行動変容にどう影響するかを評価する．提案したモデルに基づき，大学の体育会野球部と研究室の異なる 2 つの集団を対象に 3 週間の行動変容実験を行った．実験結果を元に，各モデルが行動変容に与える効果を検証した．Currently, everyone can detect and store many life-log data very easily with the spread of smart phones or wearable devices and large scale data storage. Wide variety and large scale life-log data are very useful to self behavior change, medical care, education, and social analytics. Existing researches of human behavior change using life-log data focus on individual human behavior change. But nowadays everyone have communication equipment like smart phones. Group behavior change is very useful to keep workers' health in company and/or managing amount of practice in a sport team. Group has many kind of human relations, for example, manager and normal member. Therefore techniques for individual human behavior change is not effective to groups. The biggest aim of our research is to build the model of group behavior change. Specially, we focus on team behavior change. In this paper, we propose six types of group behavior model based on the "competition" and "collaboration" technique. We used encouraging team modification application in sports team and laboratory for keeping the sit-up exercise for 3 weeks. Sit-up exercise is very important to preventing the injury and keep fit for the sport team and the laboratory member. We create 8 groups in a team. We evaluate and consider this model based on the change of the self-efficacy and number of sit-up activities.

ClouT: Leveraging Cloud computing techniques for improving management of massive IoT data 査読有り Open Access

Galache, JA; Yonezawa, T; Gurgen, L; Pavia, D; Grella, M; Maeomichi, H

2014 IEEE 7TH INTERNATIONAL CONFERENCE ON SERVICE-ORIENTED COMPUTING AND APPLICATIONS (SOCA) 頁： 324 - 327 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings IEEE 7th International Conference on Service Oriented Computing and Applications Soca 2014

The Smart City concept relates to improve efficiency of city services and facilitate a more sustainable development of cities, as well as standing as the key concept for the future technological developments in Future Internet, IoT and, for the great quantity of information stored, big data and cloud computing. In this sense, this paper presents the ClouT project, a joint European-Japanese project, whose main aim is making citizens aware of city resources and helping them to use and care these resources by mean of smart IoT services in the Cloud. This objective is addressed through the definition of a three layer architecture composed of: CIaaS, CPaaS and CSaaS layers. On top of this architecture, different use cases associated to different application domains will be developed, mainly within the four cities that take part of the consortium: Mitaka and Fujisawa in Japan, and Santander and Genova in Europe.

DOI： 10.1109/SOCA.2014.47

SENSeTREAM: Enhancing Online Live Experience with Sensor-Federated Video Stream Using Animated Two-Dimensional Code 査読有り

Yonezawa, T; Ogawa, M; Kyono, Y; Nozaki, H; Nakazawa, J; Nakamura, O; Tokuda, H

UBICOMP'14: PROCEEDINGS OF THE 2014 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING 頁： 301 - 305 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp 2014 Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing

We propose a novel technique that aggregates multiple sensor streams generated by totally different types of sensors into a visually enhanced video stream. This paper shows major features of SENSeTREAM and demonstrates enhancement of user experience in an online live music event. Since SENSeTREAM is a video stream with sensor values encoded in a two-dimensional graphical code, it can transmit multiple sensor data streams while maintaining their synchronization. A SENSeTREAM can be transmitted via existing live streaming services, and can be saved into existing video archive services. We have implemented a prototype SENSe- TREAM generator and deployed it to an online live music event. Through the pilot study, we confirmed that SENSe- TREAM works with popular streaming services, and provide a new media experience for live performances. We also indicate future direction for establishing visual stream aggregation and its applications.

DOI： 10.1145/2632048.2632104

FlyingDisplay: 飛行可能な公共ディスプレイシステム

野崎大幹, 興野悠太郎, 小川正幹, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2014 巻 ( 10 ) 頁： 909 - 914 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：一般社団法人情報処理学会

近年，インターネットの発展により，爆発的に情報量が増加してきている．それにともない，情報をどのようにして現実社会に対して伝えるか，提示するシチュエーションやメディアが多様化してきている．その一例として，駅やショッピングモールなどの公共空間においてディスプレイを用いたデジタルコンテンツが普及している．しかしながら，ディスプレイによる情報提示は，様々な問題がある．本稿では，無人飛行器を用いた飛行可能な新しい公共ディスプレイ，FlyingDisplay を提案する．本ディスプレイモデルでは，いつでもどこでも情報を提示することを可能にし，既存の公共ディスプレイモデルと全く違う新たなモデルを提案する．プロトタイプを実装し評価実験を行い，本研究で提案した FlyingDisplay の飛行持続性と将来像を示した．We developed FlyingDisplay, a novel movable public display system, which can provide information to the people anywhere at anytime. This system consists of two UAVs (Unmanned Aerial Vehicles) with a projector and a screen. FlyingDisplay achieves moving freely and keeping stable in 3-D space. FlyingDisplay moves closer to people and gives information directly to them. To evaluate performance of FlyingDisplay, we performed two experiments for adapting a flying control algorithm. We also showed the stability of FlyingDisplay systems by trajectories of each UAV. This paper highlights the performance of FlyingDisplay and discusses the FlyingDisplay's potential for public displays in physical space.

DOI： 10.1145/2559206.2579410

Orchestration of Smart City Services across Ground, Air, and Space 査読有り

Nakazawa, J; Tokuda, H; Kyono, Y; Yonezawa, T

2014 IEEE 7TH INTERNATIONAL CONFERENCE ON SERVICE-ORIENTED COMPUTING AND APPLICATIONS (SOCA) 頁： 332 - 333 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings IEEE 7th International Conference on Service Oriented Computing and Applications Soca 2014

The paper proposes vertical/horizontal smart city service orchestration in terms of networking, sensing and actuation across ground, air and space. Smart city services should support in both usual and emergency situations, however, the system requirements to the different situation differs because network availability and sensing/acting priority are different among the situations. To fulfil various requirements for smart city serves, we present vertical/horizontal service orchestration through Fujisawa field trials in Japan.

DOI： 10.1109/SOCA.2014.28

Towards Health Exercise Behavior Change for Teams Using Life-logging 査読有り

Nishiyama, Y; Okoshi, T; Yonezawa, T; Nakazawa, J; Takashio, K; Tokuda, H

2014 IEEE 16TH INTERNATIONAL CONFERENCE ON E-HEALTH NETWORKING, APPLICATIONS AND SERVICES (HEALTHCOM) 頁： 397 - 403 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：2014 IEEE 16th International Conference on E Health Networking Applications and Services Healthcom 2014

Recent technological trends on mobile/wearable devices and sensors have been enabling increasing number of people to collect and store their 'life-logs' easily in their daily lives. Beyond exercise behavior change of individual user, our research focus is on the behavior change of teams, based on life-logging technologies and information sharing. In this paper, we propose and evaluate six different types of information sharing model among team members for their exercise promotion, leveraging concepts of 'competition' and 'collaboration'. According to our experimental mobile web application for exercise promotion and extensive user study among 64 total users for three weeks, the model with 'external competition' technique resulted the most effective performance for competitive teams such as sport teams.

DOI： 10.1109/HealthCom.2014.7001876

Classifying urban events' popularity by analyzing friends information in location-based social network. 査読有り

Makoto Kawano, Takuro Yonezawa, Jin Nakazawa, Satoshi Kawasaki, Ken Ohta, Hiroshi Inamura, Hideyuki Tokuda

The First International Conference on IoT in Urban Space, Urb-IoT 2014, Rome, Italy, October 27-28, 2014 頁： 87 - 89 2014年

記述言語：日本語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ICST

Recent progress and spread of smartphones and social network services have enabled us to transmit text messages with GPS location data anywhere and anytime. Since these location-based SNS messages often refer to urban events, many researchers have tried to recognize urban events by analyzing of the messages. To construct the various applications based on the urban events information, we propose a new indicator of event, called Popularity which represents how popular the urban event is. Popularity is estimated by analyzing friends on social network of events' participants. To evaluate our new indicator, we designed and implemented intuitive and interactive web-based tool for analyzing Popularity of events. Through comparative experiments, we confirmed that our proposed method could provide a certain amount of accuracy for estimating Popularity of events.

DOI： 10.4108/icst.urb-iot.2014.257295

LiPS: Linked Participatory Sensing for Optimizing Social Resource Allocation 査読有り

Sakamura, M; Yonezawa, T; Nakazawa, J; Takashio, K; Tokuda, H

PROCEEDINGS OF THE 2014 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING (UBICOMP'14 ADJUNCT) 頁： 1015 - 1023 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp 2014 Adjunct Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing

This paper proposes a concept of linked participatory sensing, called LiPS, that divide a complex sensing task into small tasks and link each other to optimize social resource allocation. Recently participatory sensing have been spreading, but its sensing tasks are still very simple and easy for participants to deal with (e.g. Please input the number of people standing in a queue. etc.). To adapt to high-level tasks which require specific skills such as those in engineering, the medical profession or authority such as the organizer of the event, we need to optimize social resource allocation because the number of such professionals are limited. To achieve the complex sensing tasks efficiently, LiPS enables to divide a complex sensing task into small tasks and link each other by assigning proper sensors. LiPS can treat physical sensors and human as hybrid multi-level sensors, and task provider can arrange social resource allocation for the goal of each divided sensing task. In this paper, we describe the design and development of the LiPS system. We also implemented an in-lab experiment as the first prototype of hybrid sensing system and discussed the model of further system through users' feedback. Copyright 2014 ACM.

DOI： 10.1145/2638728.2641286

Help me!: Valuing and visualizing participatory sensing tasks with physical sensors 査読有り

Sakamura M., Yonezawa T., Nakazawa J., Takashio K., Tokuda H.

ACM International Conference Proceeding Series 頁： 3:1-3:6 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM International Conference Proceeding Series

Recent progress of mobile devices such as smartphones enables human to leverage their perception ability as a part of sensing framework. This sensing framework, so called participatory sensing, distributes various sensing tasks (e.g., whether report, waiting time in a queue, traffic conditions etc.) to possible participants. Then, participants can select and achieve the sensing tasks. However, in the coming future with the rapid growth of participatory sensing and increasing number of sensing tasks, it must be very hard for users to choose appropriate sensing tasks around them. To solve this problem, we propose a system called Help Me!, which can value and visualize importance of sensing tasks by quantifying them in cooperation with physical sensors. Since Help Me! system provides objective index for sensing tasks, it enhances opportunity for users to participate to sensing tasks. We designed and implemented Help Me! system as an integrated architecture of physical sensors and participatory sensors. Through initial in-lab experiment, we confirmed that Help Me! system can enhance opportunity to participate to sensing tasks for users. © 2014 ACM.

DOI： 10.1145/2637064.2637095

Vinteraction: Vibration-based information transfer for smart sensing devices 査読有り

Yonezawa T., Nakazawa J., Tokuda H.

ACM International Conference Proceeding Series 2014年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：ACM International Conference Proceeding Series

According to the spread of smart devices such as smartphones and smart tablets, opportunities to communicate between them will be more increased. Though we usually use WiFi and Bluetooth, it is still burden task for end-users. Many previous techniques to collaborate devices easily has been also proposed, they are not always best solution in some situations. This paper proposes a new interaction method called Vinteracion, which leverages combination of vibrator and accelerometer to send information from smart device to the other smart device. Vinteraction enables users to use touch interaction like Near Field Communication, which provides easy and intuitive way. We present an algorithm and implementation of vibration-based communication that can be adapted to any combination of smart devices. © 2014 ACM.

DOI： 10.1145/2637064.2637101

Proceedings of the 2014 International Workshop on Web Intelligence and Smart Sensing, IWWISS '14, Saint Etienne, France, September 1-2, 2014 査読有り

IWWISS 2014 2014年

Monitoring dependability of city-scale IoT using D-case 査読有り

Tokuda H., Yonezawa T., Nakazawa J.

2014 IEEE World Forum on Internet of Things Wf Iot 2014 頁： 371 - 372 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：2014 IEEE World Forum on Internet of Things Wf Iot 2014

City-scale IoT, a fundamental infrastructure for smart cities, requries to sense a range of ubiquitous entities in a city including humans, objects, and spaces. Ubiquitous sensor networks (USN) is the key technology to this. However, failures of a USN may result in hazards in our daily lives in smart cities. Monitoring of USN, rapid detection of faults and failures, and recovery from them are thus important for better applications of USN. This paper proposes a means to do so comprehensively by using Dependability Cases (D-Case). Since USN is a system composed of variety of components such ash wireless sensor nodes, database servers, and network appliances, we need a tool that can target them in common. Our tool enables to execute monitoring programs on a D-Case diagram, which is represented with Goal Structuing Notation (GSN), so that it can target a variety of devices and services. © 2014 IEEE.

DOI： 10.1109/WF-IoT.2014.6803192

International Workshop on Web Intelligence and Smart Sensing IWWISS'2014 査読有り

Maret P., Ishikawa F., Honda S., Yonezawa T., Akerkar R., Riedel T.

ACM International Conference Proceeding Series 頁： 1:1-1:6 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ACM International Conference Proceeding Series

The main objective of the IWWISS 2014 is to explore whether the underlying ideas of Web Intelligence and technologies can meet the domain of Smart Sensors to allow the development of an open information space which we call the Smart Sensing Web. The Smart Sensing Web unifies the real and the virtual world by integrating sensor technologies and Web intelligence technologies. © 2014 ACM.

DOI： 10.1145/2637064.2637088

イベント参加者のフォロー関係に基づくイベント分類手法の提案査読有り

河野慎 , 米澤拓郎 , 中澤仁 , 川崎仁嗣 , 太田賢 , 稲村浩 , 徳田英幸

情報処理学会研究報告. MBL, [モバイルコンピューティングとユビキタス通信研究会研究報告] 2013 巻 ( 3 ) 頁： 1 - 6 2013年12月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

近年 GPS が搭載されたスマートフォンや SNS の普及によって,ユーザがリアルタイムに位置情報を付加させた情報を発信できるようになってきた.これらの位置情報付き発言を収集・解析することで,人々が集まって形成されるソーシャルイベントを検出することが可能となる.ソーシャルイベントを検出するには発見と分類の 2 段階の過程があり,本研究ではイベントが発見された後の分類手法を提案する.イベントには特徴・性質として内容・規模・大衆性の 3 つがあると考え、分類軸として大衆性に着目する.位置情報を付与させて発言しているイベント参加者のフォロー関係を解析することで大衆性の推定をし,イベントの分類を目指す.本研究ではリアルタイムに解析を行えるツールを設計・実装し,大衆性の推定手法について考察を行った.

Synchrometer：ライフログを利用した日常行動における他者との類似度生成

勝治宏基, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2013 巻 ( 17 ) 頁： 1 - 7 2013年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

近年，センシングデバイスの小型化，低価格化により，ウェアラブルセンサを利用して人の行動を取得する事が容易になった．それにより，私達の日々の生活行動を自動的に取得，蓄積するライフログが幅広く研究される様になった．本研究では，自分と他人の一日の行動から二人の似た行動を類似行動として生成するシステム Synchrometer を提案する．生成した類似行動は行動改善や医療，介護，新しいコミュニケーションの生成など，様々な場で利用する事が可能である．Recently, because of miniaturization and low cost of the sensing devices, obtaining human behavior became more easier . Therefore, lifelog, which is getting and storing our daily life activities, became to be studied widely. In this study, we propose the system Synchrometer which create a similarity as similar-activity from two people's daily activity. Similar-activity have a possibility to use to behavioral improvements, medical, nursing, generating new communication and so on.

Synchrometer：ライフログを利用した日常行動における他者との類似度生成

勝治宏基, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ヒューマンコンピュータインタラクション（HCI） 2013 巻 ( 17 ) 頁： 1 - 7 2013年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

近年，センシングデバイスの小型化，低価格化により，ウェアラブルセンサを利用して人の行動を取得する事が容易になった．それにより，私達の日々の生活行動を自動的に取得，蓄積するライフログが幅広く研究される様になった．本研究では，自分と他人の一日の行動から二人の似た行動を類似行動として生成するシステム Synchrometer を提案する．生成した類似行動は行動改善や医療，介護，新しいコミュニケーションの生成など，様々な場で利用する事が可能である．Recently, because of miniaturization and low cost of the sensing devices, obtaining human behavior became more easier . Therefore, lifelog, which is getting and storing our daily life activities, became to be studied widely. In this study, we propose the system Synchrometer which create a similarity as similar-activity from two people's daily activity. Similar-activity have a possibility to use to behavioral improvements, medical, nursing, generating new communication and so on.

チームの動機づけにおける個人の貢献度の可視化に関する一検討 (知的環境とセンサネットワーク) 査読有り

西山勇毅, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 113 巻 ( 38 ) 頁： 233-240 2013年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）

近年,個人の動機付けや行動改善のためのアプリケーションが普及してきた.今後,研究プロジェクトチームやスポーツチームなどの明確な目標を持ち,様々な立場の人間が所属するチームでの利用が考えられる.本研究では,個人の貢献度の可視化がチームの動機づけに与える影響の調査を行った.情報共有アプリケーションを実装し,ランダムに抽出したチームに対して,他人に個人の貢献度を見せた場合と見せない場合での比較実験を行い評価した.

ラッキーなう : 時間と場所情報に注目した公共ディスプレイとのインタラクションモデルとその応用 (知的環境とセンサネットワーク) 査読有り

小川正幹, ユルムマルコ, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 113 巻 ( 38 ) 頁： 199-206 2013年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）

近年,ディスプレイの低価格化や,デジタルサイネージをはじめとする電子コンテンツへの関心の増加により,公共ディスプレイが普及して来た.それにともない,ユーザからの入力によってニーズに応じた情報を提供するインタラクティブな公共ディスプレイも登場して来た.現在インタラクティブな公共ディスプレイの持つ課題の一つとして,ディスプレイがユーザに対して有益である事を,ユーザへ伝える事が難しいという点が挙げられる.この間題を解決する事により,インタラクティブな公共ディスプレイへの関心や,利用頻度の向上が達成されると考えられる.本稿では,時間と場所を限定することでユーザに特別感を与える公共ディスプレイとのインタラクションモデルを提案する.その一例として,その時その場所にいた人々だけに配布され,かつその人だけが利用可能なクーポン配信アプリケーションを構築し評価実験を行い,本研究で提案したインタラクションモデルの有用性を示した.

Synchrometer : ライフログを利用した他者との生活スタイルのシンクロ度合判定手法(ポスターセッション,フレッシュマンセッション及び一般)

勝治宏基, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告. ASN, 知的環境とセンサネットワーク 113 巻 ( 38 ) 頁： 185 - 186 2013年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

近年,センシングデバイスの小型化,低価格化により,ウェアラブルセンサを利用して人の行動を取得する事が容易になった.それにより,私達の日々の生活行動を自動的に取得,蓄積するライフログが幅広く研究される様になった.本研究では,自分と他人の一日の行動から二人の似た行動をシンクロした行動として取得するシステムSynchrometerを提案する.取得したシンクロは行動改善や医療,介護,新しいコミュニケーションの生成など,様々な場で利用する事が可能である.

動的かつ不定形な対象に投影するプロジェクションマッピング手法の提案(ポスターセッション,フレッシュマンセッション及び一般) 査読有り

興野悠太郎, 小川正幹, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告. ASN, 知的環境とセンサネットワーク 113 巻 ( 38 ) 頁： 187 - 188 2013年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

近年,スクリーン以外を対象として映像を投影するプロジェクションマッピングが盛んとなっている.しかし,現在のプロジェクションマッピングでは,静的な物体に対して投影されているものがほとんどで,移動している物体や形が変わる対象に投影する場合,あらかじめ複雑なキャリブレーションが必要な事から,あまり取り組まれていない.しかし,これらの物体に投影する事で,よりダイナミックで演出効果の高い表現を実現できると考えられる.本研究では,動的かつ不定形の物体に対し,事前のキャリブレーションを必要とすることなく,対象の状況を動的に判別し,投影を可能とする手法を実現する.

動的かつ不定形な対象に投影するプロジェクションマッピング手法の提案査読有り

興野悠太郎, 小川正幹, 米澤拓郎, 中澤仁, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2013 巻 ( 48 ) 頁： 1-2 2013年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）

近年，スクリーン以外を対象として映像を投影するプロジェクションマッピングが盛んとなっている．しかし，現在のプロジェクションマッピングでは，静的な物体に対して投影されているものがほとんどで，移動している物体や形が変わる対象に投影する場合，あらかじめ複雑なキャリブレーションが必要な事から，あまり取り組まれていない．しかし，これらの物体に投影する事で，よりダイナミックで演出効果の高い表現を実現できると考えられる．本研究では，動的かつ不定形の物体に対し，事前のキャリブレーションを必要とすることなく，対象の状況を動的に判別し，投影を可能とする手法を実現する．

仮想センサネットワークとその応用査読有り

中澤仁, 米澤拓郎, 伊藤友隆, 高汐一紀, 徳田英幸

情報処理学会研究報告. UBI, [ユビキタスコンピューティングシステム] 2013 巻 ( 17 ) 頁： 1 - 6 2013年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

アプリケーションの関心を仮想ネットワークとして実ネットワーク上に創出し,そこで提供される複数のサービスを統合することでアプリケーションを構築できる,仮想ネットワークセンシング (Virtual Networked Sensing, VNS) 機構を提案する.同機構では,物理的に存在する多数の実センサから,都市における人の流れの把握や環境モニタリングといった目的の充足に必要なものをアプリケーションが選択し,それらを仮想的センサネットワーク (Virtual Sensor Network, VSN) として定義できる.仮想センサネットワーク内でサービスを任意に組み合わせて高度な網内処理を実現できる他,当該 VSN 内のセンサ情報を仮想センサデータベースに蓄積することも可能である.本稿では,具体的なアプリケーションの記述方式や挙動を紹介しながら,同機構の利点を示す.

チームの動機づけにおける個人の貢献度の可視化に関する一検討査読有り

西山勇毅, 米澤拓郎, 中澤仁, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2013 巻 ( 21 ) 頁： 1-8 2013年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）

近年，個人の動機付けや行動改善のためのアプリケーションが普及してきた．今後，研究プロジェクトチームやスポーツチームなどの明確な目標を持ち，様々な立場の人間が所属するチームでの利用が考えられる．本研究では，個人の貢献度の可視化がチームの動機づけに与える影響の調査を行った．情報共有アプリケーションを実装し，ランダムに抽出したチームに対して，他人に個人の貢献度を見せた場合と見せない場合での比較実験を行い評価した．

Synchrometer：ライフログを利用した他者との生活スタイルのシンクロ度合判定手法

勝治宏基, 米澤拓郎, 中澤仁, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2013 巻 ( 47 ) 頁： 1 - 2 2013年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

近年，センシングデバイスの小型化，低価格化により，ウェアラブルセンサを利用して人の行動を取得する事が容易になった．それにより，私達の日々の生活行動を自動的に取得，蓄積するライフログが幅広く研究される様になった．本研究では，自分と他人の一日の行動から二人の似た行動をシンクロした行動として取得するシステム Synchrometer を提案する．取得したシンクロは行動改善や医療，介護，新しいコミュニケーションの生成など，様々な場で利用する事が可能である．

Fragwrap: Fragrance-encapsulated and projected soap bubble for scent mapping 査読有り

Kyono Y., Tokuda H., Yonezawa T., Nozaki H., Nakazawa J.

Ubicomp 2013 Adjunct Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing 頁： 311 - 314 2013年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp 2013 Adjunct Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing

This paper proposes FRAGWRAP which maps scent to real objects in real-time. To achieve this purpose, we leverage fragrance-encapsulated soap bubble with projection mapping technique. Since human olfaction is known as combined utilization of his/her eyes and nose, we encapsulate fragrance into bubble soap to stimulate the nose and also project 3D image of the fragrance to the bubble soap in real-time. In this video, we present our first prototype which automatically inserts fragrance into a soap bubble and also projects images to the moving bubble. All system is activated by speech recognition.

DOI： 10.1145/2494091.2494187

Reinforcing co-located communication practices through interactive public displays 査読有り

Ogawa M., Nakazawa J., Jurmu M., Takashio K., Ito T., Tokuda H., Yonezawa T.

Ubicomp 2013 Adjunct Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing 頁： 737 - 740 2013年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp 2013 Adjunct Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing

In recent years, the steady emergence of digital communication, especially social media, has increased the 'placelessness' of inter-person communication practices, i.e., lessening the need to reside co-located in order to communicate. When these communication practices carry over to co-located settings, they introduce redundancy and potentially even harm the co-located context, since use of personal technologies tends to isolate users from their surroundings. In this position paper, we want to raise awareness on how interactive public displays could alleviate this redundancy and potential isolation. We present a model of reinforcing co-located communications, and illustrate it through example use cases. Copyright © 2013 ACM.

DOI： 10.1145/2494091.2495998

PARnorama: 360 Degree interactive video for augmented reality prototyping 査読有り

Berning M., Nakazawa J., Yonezawa T., Beigl M., Riedel T., Tokuda H.

Ubicomp 2013 Adjunct Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing 頁： 1471 - 1474 2013年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp 2013 Adjunct Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing

Designing novel and meaningful interactions in the domain of Augmented Reality (AR) requires an efficient and appropriate methodology. A user centered design process requires the construction and evaluation of several prototypes with increasing technical fidelity. Although the main content of the application can already be conveyed with prerendered video, one of the main interactions in AR - The user-selected viewpoint - is only available in a very late stage. We propose the use of panoramic 360? video for scenario based user evaluation, where the user can select his point of view during playback. Initial users report a high degree of immersion in the constructed scenario, even for handheld AR.

DOI： 10.1145/2494091.2499570

Evercopter: Continuous and adaptive over-the-air sensing with detachable wired flying objects 査読有り

Kyono Y., Ito T., Yonezawa T., Nakazawa J., Nozaki H., Takashio K., Ogawa M.

Ubicomp 2013 Adjunct Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing 頁： 299 - 302 2013年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp 2013 Adjunct Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing

The paper proposes EverCopter, which provides continuous and adaptive over-the-air sensing with detachable wired flying objects. While a major advantage of sensing systems with battery-operated MAVs is a wide sensing coverage, sensing time is limited due to its limited amount of energy. We propose dynamically rechargeable flying objects, called EverCopter. EverCopter achieves both long sensing time and wide sensing coverage by the following two characteristics. First, multiple EverCopters can be tied in a row by power supply cables. Since the root EverCopter in a row is connected to DC power supply on the ground, each EverCopter can fly without battery. This makes their sensing time forever, unless the power supply on the ground fails. Second, the leaf EverCopter can detach itself from the row in order to enjoy wider sensing coverage. An EverCopter, while it is detached, runs with its own battery-supplied energy. When the remaining energy becomes low, it flies back to the row to recharge the battery.

DOI： 10.1145/2494091.2494183

Second-sighted glasses : Discovering and understanding context-Aware services with augmented reality technique 査読有り

Yonezawa T., Tokuda H.

Proceedings of the SICE Annual Conference 頁： 2386 - 2391 2013年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings of the SICE Annual Conference

There has been a great effort to create context-Aware technology to support user's life. Context-Aware technology is useful because it resolves user's demand in prior. However, if it fails to recognize context correctly and controls appliances incorrectly, users may feel uncomfortable about the environment. Context recognition error is currently unavoidable, therefore, notifying the user of what kind of result each context has, is considered to be important in order to ease user's discomfort. In the similar way, it is important to show the smartness of ubiquitous computing environment to people who don't know about the environment. To effectively provide this information to the users, we propose an interface called Second-sighted Glasses, inspired by the movie titled "Next". The glasses shows users the future effects of each action they may take with augmented reality technique.

Temperature distributions of electron beam-irradiated samples by scanning electron microscopy 査読有り

Tokunaga, T; Narushima, T; Yonezawa, T; Sudo, T; Okubo, S; Komatsubara, S; Sasaki, K; Yamamoto, T

JOURNAL OF MICROSCOPY 248 巻 ( 3 ) 頁： 228 - 233 2012年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Microscopy

An electron beam (EB) generated by a scanning electron microscope (SEM) was used to irradiate two samples having different thermal conductivities, and the resulting temperatures of the EB-irradiated areas as well as the temperature distributions within the samples were then measured using a thermal camera. These measurements showed overall increases in sample temperatures, as well as revealed temperature rises at the EB-irradiated areas that had little difference with one of the theoretical predictions. Differences between the actual and the predicted temperature measurements were analysed in terms of the accuracy with which parameters could be estimated. The temperature distributions of the samples were measured and, On the basis of the results, it was hypothesized that the temperature differential over an irradiated sample will be inversely correlated with its thermal conductivity. © 2012 Royal Microscopical Society.

DOI： 10.1111/j.1365-2818.2012.03666.x

Detection, classification and visualization of place-triggerd geotagged tweets 査読有り

Hiruta S., Yonezawa T., Jurmu M., Tokuda H.

Ubicomp 12 Proceedings of the 2012 ACM Conference on Ubiquitous Computing 頁： 956 - 963 2012年12月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ubicomp 12 Proceedings of the 2012 ACM Conference on Ubiquitous Computing

This paper proposes and evaluates a method to detect and classify tweets that are triggered by places where users locate. Recently, many related works address to detect real world events from social media such as Twitter. However, geotagged tweets often contain noise, which means tweets which are not content-wise related to users' location. This noise is problem for detecting real world events. To address and solve the problem, we define the Place-Triggered Geotagged Tweet, meaning tweets which have both geotag and content-based relation to users' location. We designed and implemented a keyword-based matching technique to detect and classify place-triggered geotagged tweets. We evaluated the performance of our method against a ground truth provided by 18 human classifiers, and achieved 82% accuracy. Additionally, we also present two example applications for visualizing place-triggered geotagged tweets. Copyright 2012 ACM.

LiDSN: A method to deploy wireless sensor networks securely based on light communication 査読有り

Doan G., Nguyen M., Takimoto T., Yonezawa T., Nakazawa J., Takashio K., Tokuda H.

Ubicomp 12 Proceedings of the 2012 ACM Conference on Ubiquitous Computing 頁： 539 - 540 2012年12月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Ubicomp 12 Proceedings of the 2012 ACM Conference on Ubiquitous Computing

Deploying Wireless Sensor Networks (WSN) securely still requires users to have certain skills and exert effort. In the near "sensor everywhere" future, a much simpler method for deploying WSN will be necessary for end-users. We propose LiDSN(Light Communication for Deploying Secure Wireless Sensor Networks) which enables users to achieve deployment tasks via simple interaction. LiDSN leverages light-based communication between an LED and a light sensor in order to add a new sensor node securely into existing WSN. Through touching interaction, a new sensor node ID and secret key can be transmitted to the WSN, and then the WSN is able to identify which node should be added while maintaining the security of the WSN. Copyright 2012 ACM.

ヒトやモノをエンパワーする実世界情報アプリケーションとバーチャル・ネットワークド・センシング技術

徳田英幸, 中澤仁, 米澤拓郎, 間博人, 伊藤友隆

電子情報通信学会技術研究報告. IN, 情報ネットワーク 112 巻 ( 230 ) 頁： 49 - 53 2012年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

アプリケーションの関心を仮想ネットワークとして実ネットワーク上に創出し,そこで提供される複数のサービスを統合することでアプリケーションを構築可能な仮想ネットワークセンシング機構を提案する.また,構築した仮想ネットワークセンシング機構上で動作する、モノ、人、および社会に関するセンサネットワークアプリケーション群を創出する.

Control Manually:視聴者協力型ライブ演出システムによるコミュニケーションと演出効果の拡張

米澤拓郎, 徳田英幸

研究報告エンタテインメントコンピューティング（EC） 2012 巻 ( 8 ) 頁： 1 - 8 2012年7月

記述言語：日本語掲載種別：研究論文（学術雑誌）

インターネット生放送の利点の一つに，配信者と視聴者間の密なコミュニケーションが可能である点が挙げられるが，現状ではコメントを通じた双方向性に限られている．生放送コンテンツとして楽器の演奏が挙げられるが，演奏中は集中しているため，コメントによる視聴者とのコミュニケーションは希薄となる．本研究では演奏配信に適した新たなコミュニケーション手段として，視聴者が演奏者の配信環境を制御し，演出を行うことでコミュニケーションを可能とする視聴者協力型ライブ演出システムを提案する．4 週間に及ぶ配信実験の結果，同システムを用いることで演奏者と視聴者間，および視聴者間での非言語コミュニケーションが創発され，生放送参加者の一体感の拡大につながるとともに，ズームインやパン，カメラの切り替えなどのカメラワークによって演出効果が向上したことを示す．また実験結果に基づき，将来のインタラクティブ生放送支援システムのデザインの指針を示す．

Control Manually:視聴者協力型ライブ演出システムによるコミュニケーションと演出効果の拡張

米澤拓郎, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2012 巻 ( 8 ) 頁： 1 - 8 2012年7月

記述言語：日本語掲載種別：研究論文（学術雑誌）

インターネット生放送の利点の一つに，配信者と視聴者間の密なコミュニケーションが可能である点が挙げられるが，現状ではコメントを通じた双方向性に限られている．生放送コンテンツとして楽器の演奏が挙げられるが，演奏中は集中しているため，コメントによる視聴者とのコミュニケーションは希薄となる．本研究では演奏配信に適した新たなコミュニケーション手段として，視聴者が演奏者の配信環境を制御し，演出を行うことでコミュニケーションを可能とする視聴者協力型ライブ演出システムを提案する．4 週間に及ぶ配信実験の結果，同システムを用いることで演奏者と視聴者間，および視聴者間での非言語コミュニケーションが創発され，生放送参加者の一体感の拡大につながるとともに，ズームインやパン，カメラの切り替えなどのカメラワークによって演出効果が向上したことを示す．また実験結果に基づき，将来のインタラクティブ生放送支援システムのデザインの指針を示す．

セキュアな光通信を用いたWSN構築手法

グエン・ゾアン・ミン・ザン, 瀧本拓哉, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告エンタテインメントコンピューティング（EC） 2012 巻 ( 3 ) 頁： 1 - 6 2012年7月

記述言語：日本語掲載種別：研究論文（学術雑誌）

現在，多数のセンサノードから成る Wireless Sensor Network (WSN) が普及しつつある．また健康モニタリングシステムや警備システムなど WSN を用いた様々なアプリケーションが開発されている．本研究では将来的にそれらの WSN やアプリケーションが，家庭など身近な環境に普及していくと想定している．そうした環境においてはエンドユーザは自分でセンサノードを購入して，自分で家に設置し利用である必要がある．しかし，現在提案されている WSN を構築するための手法では，WSN に関する知識や経験が必要となるため，エンドユーザが利用するのは困難である．本研究ではセキュアな光通信を用いた WSN 構築手法，LiDSN を提案する．

セキュアな光通信を用いたWSN構築手法

グエン・ゾアン・ミン・ザン, 瀧本拓哉, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2012 巻 ( 3 ) 頁： 1 - 6 2012年7月

記述言語：日本語掲載種別：研究論文（学術雑誌）

現在，多数のセンサノードから成る Wireless Sensor Network (WSN) が普及しつつある．また健康モニタリングシステムや警備システムなど WSN を用いた様々なアプリケーションが開発されている．本研究では将来的にそれらの WSN やアプリケーションが，家庭など身近な環境に普及していくと想定している．そうした環境においてはエンドユーザは自分でセンサノードを購入して，自分で家に設置し利用である必要がある．しかし，現在提案されている WSN を構築するための手法では，WSN に関する知識や経験が必要となるため，エンドユーザが利用するのは困難である．本研究ではセキュアな光通信を用いた WSN 構築手法，LiDSN を提案する．

A-15-20 スマート端末のための振動を用いた情報通信手法の実装と評価(A-15.ヒューマン情報処理,一般セッション) 査読有り

米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会総合大会講演論文集 2012 巻頁： 240 - 240 2012年3月

D-5-1 場所誘因型位置情報付き発言の検出と可視化(D-5.言語理解とコミュニケーション,一般セッション) 査読有り

蛭田慎也, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

電子情報通信学会総合大会講演論文集 2012 巻 ( 1 ) 頁： 48 - 48 2012年3月

Detection, Classification and Visualization of Place-triggerd Geotagged Tweets 査読有り

Hiruta, S; Yonezawa, T; Jurmu, M; Tokuda, H

UBICOMP'12: PROCEEDINGS OF THE 2012 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING 頁： 956 - 963 2012年

LiDSN: A Method to Deploy Wireless Sensor Networks Securely based on light communication 査読有り

Nguyen, GDM; Takimoto, T; Yonezawa, T; Nakazawa, J; Takashio, K; Tokuda, H

UBICOMP'12: PROCEEDINGS OF THE 2012 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING 頁： 539 - 540 2012年

Enhancing communication and dramatic impact of online live performance with cooperative audience control 査読有り

Yonezawa T., Tokuda H.

Ubicomp 12 Proceedings of the 2012 ACM Conference on Ubiquitous Computing 頁： 103 - 112 2012年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp 12 Proceedings of the 2012 ACM Conference on Ubiquitous Computing

Recent progress in information technology enables people to easily broadcast events live on the Internet. Although the advantage of the Internet is live communication between a performer and listeners, the current mode of communication is writing comments using Twitter or Facebook, or some similar messaging network. In one type of live broadcast, musical performances, it is difficult for a musician, when playing an instrument, to communicate with listeners by writing comments. We propose a new communication mode between performers who play musical instruments, and their listeners by enabling listeners to control the performer's camera or illumination remotely. The results of four weeks of experiment confirm the emergence of nonverbal communication between a performer and listeners, and among listeners, which increases camaraderie amongst listeners and performers. Additionally, the dramatic impact of a performance is increased by enabling listeners to control various camera actions such as zoom-in or pan in real time. The results also provide implications for design of future interactive live broadcasting services. Copyright 2012 ACM.

DOI： 10.1145/2370216.2370234

Detection, classification and visualization of place-triggered geotagged tweets. 査読有り

Shinya Hiruta, Takuro Yonezawa, Marko Jurmu, Hideyuki Tokuda

The 2012 ACM Conference on Ubiquitous Computing, Ubicomp '12, Pittsburgh, PA, USA, September 5-8, 2012 頁： 956 - 963 2012年

LiDSN: a method to deploy wireless sensor networks securely based on light communication. 査読有り

Giang Doan, Minh Nguyen, Takuya Takimoto, Takuro Yonezawa, Jin Nakazawa, Kazunori Takashio, Hideyuki Tokuda

The 2012 ACM Conference on Ubiquitous Computing, Ubicomp '12, Pittsburgh, PA, USA, September 5-8, 2012 頁： 539 - 540 2012年

Enhancing Communication and Dramatic Impact of Online Live Performance with Cooperative Audience Control 査読有り

Yonezawa, T; Tokuda, H

UBICOMP'12: PROCEEDINGS OF THE 2012 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING 頁： 103 - 112 2012年

野球選手の投球動作変化を用いた疲労度取得手法の提案 : 投球障害予防支援システム構築に向けて

西山勇毅, 瀧本拓哉, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

電子情報通信学会技術研究報告. USN, ユビキタス・センサネットワーク : IEICE technical report 111 巻 ( 134 ) 頁： 119 - 125 2011年7月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

野球では崩れた投球フォームでの投球や過度の練習などにより,投球障害(肩や肘への怪我)が多く発生する.特に野手は自分の練習量を意識せずに練習することが多く,主観による体調管理しか行われていない.既存研究では,スポーツ障害の防止,投球パフォーマンスの向上などを目的として,三次元モーションキャップチャーや動画解析などによる投球動作の分析が行われてきた.しかし,これらの研究は実際の練習での使用を想定していないため,場所の制限や解析の時間的コストなどの問題点がある.本研究では,野球選手の野手を対象に体に装着したウェアラブルなセンサを用いて客観的な投球疲労の取得手法を提案する.

野球選手の投球動作変化を用いた疲労度取得手法の提案-投球障害予防支援システム構築に向けて-

西山勇毅, 瀧本拓哉, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） 2011 巻 ( 24 ) 頁： 1 - 7 2011年7月

記述言語：日本語掲載種別：研究論文（学術雑誌）

野球では崩れた投球フォームでの投球や過度の練習などにより，投球障害 (肩や肘への怪我) が多く発生する．特に野手は自分の練習量を意識せずに練習することが多く，主観による体調管理しか行われていない．既存研究では，スポーツ障害の防止，投球パフォーマンスの向上などを目的として，三次元モーションキャップチャーや動画解析などによる投球動作の分析が行われてきた．しかし，これらの研究は実際の練習での使用を想定していないため，場所の制限や解析の時間的コストなどの問題点がある．本研究では，野球選手の野手を対象に体に装着したウェアラブルなセンサを用いて客観的な投球疲労の取得手法を提案する．Some baseball players have their shoulder and elbow injuries cause of the disorder of the throwing form and an overwork. Fielders especially practice without knowledge of their bodies and care for it. However it is difficult to recognize their throwing form and number of throws. This research has been supported player's performance by analysis of player's throwing using sanjigen-motion-capcher and douga-bunnseki for all time. But this research has problems with place and time. Because it doesn't assume actual practices. So we are researching for their new supports to improve their form and to take a break by using the radio small acceleration sensor which you can check your throwing form and number of throws easily.

D-9-14 群の形成過程に基づくソーシャルイベント判別手法の提案(D-9.ライフインテリジェンスとオフィス情報システム,一般セッション) 査読有り

丹羽亮太, 米澤拓郎, 中澤仁, 永田智大, 鈴木亮平, 徳田英幸

電子情報通信学会総合大会講演論文集 2011 巻 ( 1 ) 頁： 90 - 90 2011年2月

Second-sighted Glasses:環境のスマートネスを伝達するメガネ型ユーザインタフェース (ITS)

米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告 110 巻 ( 420 ) 頁： 187 - 192 2011年2月

Second-sighted Glasses:環境のスマートネスを伝達するメガネ型ユーザインタフェース (画像工学)

米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告 110 巻 ( 421 ) 頁： 187 - 192 2011年2月

Second-sighted Glasses:環境のスマートネスを伝達するメガネ型ユーザインタフェース(ITS画像処理,映像メディア,視覚及び一般)

米澤拓郎, 中澤仁, 徳田英幸

映像情報メディア学会技術報告 35.9 巻 ( 0 ) 頁： 187 - 192 2011年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人映像情報メディア学会

現在,ユーザの行動支援を行うため状況依存サービス(コンテクストアウェアサービス)の研究開発が盛んである.コンテクストアウェアサービスは,機器の自動制御などユーザの要求を先回りして解決することが可能であるが,もしコンテクストが正確に認識されずに機器が誤制御されたり,正確に制御されたとしてもそのサービスの存在を知らないユーザにとっては急に機器の状態が変化することに対して不快感を示す可能性も考えられる.本研究では,環境内に存在するコンテクストアウェアサービスの情報をユーザに伝達するため,どういうユーザの行動がどういう機器の挙動変化につながるか,その情報を直感的に伝達する"未来予知メタファを用いた情報伝達インタフェース"を提案し,実現する.

DOI： 10.11485/itetr.35.9.0_187

Ubiquitous Services: Enhancing Cyber-Physical Coupling with Smart Enablers Open Access

Tokuda, H; Nakazawa, J; Yonezawa, T

IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS E94-D 巻 ( 6 ) 頁： 1122 - 1129 2011年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

Ubiquitous computing and communication are the key technology for achieving economic growth, sustainable development, safe and secure community towards a ubiquitous network society. Although the technology alone cannot solve the emerging problems, it is important to deploy services everywhere and reach real people with sensor enabled smart phones or devices. Using these devices and wireless sensor networks, we have been creating various types of ubiquitous services which support our everyday life. In this paper, we describe ubiquitous services based on a HOT-SPA model and discuss challenges in creating new ubiquitous services with smart enablers such as smart phones, wireless sensor nodes, social media, and cloud services. We first classify various types of ubiquitous service and introduce the HOT-SPA model which is aimed at modeling ubiquitous services. Several ubiquitous services, such as DIY smart object services, Twitthings, Airy Notes, and SensingCloud, are described. We then address the challenges in creating advanced ubiquitous services by enhancing coupling between a cyber and a physical space. Copyright © 2011 The Institute of Electronics, Information and Communication Engineers.

DOI： 10.1587/transinf.e94.d.1122

Vib-Connect: A Device Collaboration Interface Using Vibration 査読有り

Yonezawa, T; Nakahara, H; Tokuda, H

2011 IEEE 17TH INTERNATIONAL CONFERENCE ON EMBEDDED AND REAL-TIME COMPUTING SYSTEMS AND APPLICATIONS (RTCSA 2011), VOL 1 1 巻頁： 121 - 125 2011年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings 17th IEEE International Conference on Embedded and Real Time Computing Systems and Applications Rtcsa 2011

The paper proposes an intuitive device selecting interface called "Vib-connect" for device collaboration. Recent progress in Information Technology allowed various devices to join wireless network. As a result, various ways of device collaborations and services became possible. However, interfaces for selecting devices are still complicated for end-users and far from being intuitive. To solve this problem, we propose "vibconnect", an interface which enables users to select device intuitively by pasting a vib-connector, a small vibration-based device. Vib-connect solves these problem by implementing these device information as a unique vibration pattern. By keeping smartphones or any kind of vibration generating device, end-users can easily select devices to collaborate. We implement a prototype, and through the evaluation, we confirmed high accuracy in vibration pattern detection and high usability satisfaction by nonexpert users. By using "Vib-connect", users without any technical expertize can easily select devices to collaborate with. © 2011 IEEE.

DOI： 10.1109/RTCSA.2011.48

Transferring information from mobile devices to personal computers by using vibration and accelerometer 査読有り

Yonezawa T., Ito T., Tokuda H.

Ubicomp 11 Proceedings of the 2011 ACM Conference on Ubiquitous Computing 頁： 487 - 488 2011年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp 11 Proceedings of the 2011 ACM Conference on Ubiquitous Computing

We propose a simple interaction to transfer information on smart phone to laptop/tablet PCs. We often encounter the situation that we need to send URL, which is preliminary accessed in mobile devices, from mobile devices to personal computers (PCs) to see the web page with wider screen. To support this information transfer, we utilize combination between vibrator in smart phones and accelerometer in laptop/tablet PCs. URL information is encoded to vibration patterns, and the patterns are detected and decoded by accelerometer in PCs. We demonstrate the interaction's efficiency and reasonability with actual products. © 2011 Authors.

DOI： 10.1145/2030112.2030184

C-1-Symmetric Rh/Phebox-Catalyzed Asymmetric Alkynylation of alpha-Ketoesters 査読有り

Ohshima Takashi, Kawabata Takahito, Takeuchi Yosuke, Kakinuma Takahiro, Iwasaki Takanori, Yonezawa Takayuki, Murakami Hajime, Nishiyama Hisao, Mashima Kazushi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 50 巻 ( 28 ) 頁： 6296 - 6300 2011年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Angewandte Chemie - International Edition

Thinking outside the box: A newly developed C1-symmetric Rh/Phebox complex efficiently catalyzed the asymmetric alkynylation of α-ketoester 1 with various aryl and alkyl substituted terminal alkynes to provide the corresponding chiral tertiary propargylic alcohols with up to 99 % ee (see scheme; TMS=trimethylsilyl). Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

DOI： 10.1002/anie.201100252

Transferring Information from Mobile Devices to Personal Computers by Using Vibration and Accelerometer 査読有り

Yonezawa, T; Ito, T; Tokuda, H

UBICOMP'11: PROCEEDINGS OF THE 2011 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING 頁： 487 - 488 2011年

Lupe: Information access method based on distance between user and sensor nodes using AR technology 査読有り

Takimoto T., Karatsu Y., Yonezawa T., Nakazawa J., Takashio K., Tokuda H.

Ubicomp 11 Proceedings of the 2011 ACM Conference on Ubiquitous Computing 頁： 479 - 480 2011年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Ubicomp 11 Proceedings of the 2011 ACM Conference on Ubiquitous Computing

This paper proposes the information access method that is based on the distance between users and objects. In Addition, demonstrate Lupe system, which visualizes WSN status information utilizing our method. The evaluative experiment shows that our method is useful in where a number of sensors are setup. As a result our method and Lupe system enable to easily brows WSN status information for end-user. © 2011 Authors.

DOI： 10.1145/2030112.2030180

Lupe: Information Access Method based on Distance between User and Sensor Nodes using AR technology 査読有り

Takimoto, T; Karatsu, Y; Yonezawa, T; Nakazawa, J; Takashio, K; Tokuda, H

UBICOMP'11: PROCEEDINGS OF THE 2011 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING 頁： 479 - 480 2011年

無線センサネットワークにおける低消費電力な時刻推測手法 (ユビキタスコンピューティングシステム(UBI) Vol.2010-UBI-27)

米川賢治, 米澤拓郎, 中澤仁

情報処理学会研究報告 2010 巻 ( 2 ) 頁： 6p 2010年8月

無線センサネットワークにおける低消費電力な時刻推測手法

米川賢治, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告. USN, ユビキタス・センサネットワーク : IEICE technical report 110 巻 ( 130 ) 頁： 41 - 46 2010年7月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

近年,無線センサノードでネツトワーク(WSN:Wireless Sensor Network)を構築し,それを用いるアプリケーションが数多く提案,実装されている.これらの多くでは,データを解析する際にそれが取得された時刻を知る必要がある.一方,無線センサノードのクロックは実際の時刻からずれていくため,多くのアプリケーションにおいてデータを処理する際のエラーの原因となっている.上記の問題を解決するために,WSNのための時刻同期手法が提案されてきた.本研究では,無線センサノードがデータをセンシングした時刻を,シンクノード上で要した時間から推測する手法を提案し,moteのMAC層に実装した.LECTESはFTSPと比較し,1)シングルホップ時のエラーを1.618μsから0.488μsに減少,2)センサノードの寿命を19.8%延長,3)マルチホップ時に各ホップのエラーの上昇を0.694μsから0.256μsに減少,4)使用するROMとRAMをそれぞれ8,046byte,452byte減少した.

商品購買時の迷い検出システムの構築

荒木貴好, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

電子情報通信学会技術研究報告. SIS, スマートインフォメディアシステム 109 巻 ( 338 ) 頁： 13 - 18 2009年12月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

近年の情報技術の発展により,オンラインショップなどインターネットを利用した購買活動が盛んとなり,商品購買チャネルが多様化している.また一方で,実店舗においてもQRコードや電子マネーにより購買行動の効率が向上しており,今後はRFID技術や電子端末の導入などで更なる効率化が期待されている.しかし,店舗内の効率化に伴い人員の削減や店舗内における仕事が減少することによって顧客と店員のコミュニケーションが希薄になる問題が生じている.店員が接客を行うことによって顧客が商品を購入する確率は上昇し,また顧客にとっても最適な商品を選択できるなどの利点を享受できる.実店舗の利便性を高めるには,このコミュニケーションを活性化させる必要がある.しかし,接客には適切なタイミングがあり,間違えた接客を行うと顧客が不快になることも少なくない.本研究ではこの問題を解決するために顧客の商品購買時における「迷い状態」を抽出することにより顧客と実店舗の支援を行う.

FASH: Detecting tiredness of elders 査読有り

Yonekawa K., Yonezawa T., Nakazawa J., Tokuda H.

Inss2009 6th International Conference on Networked Sensing Systems 2009年12月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Inss2009 6th International Conference on Networked Sensing Systems

This paper proposes Fatigue Alerting SHoes(FASH), a pair of shoes which prevents walking elders from falling accidents. Fatigue is one of the causes of elders encountering falling accidents, thus, FASH detects fatigue of walking people. FASH embeds pressure sensor in shoes to detects tiredness of walking people, and prevent falling accidents by alerting them. ©2009 IEEE.

DOI： 10.1109/INSS.2009.5409908

FASH : 圧力センサを用いた歩行時の疲労検知

米川賢治, 米澤拓郎, 由良淳一, 中澤仁, 高汐一紀, 徳田英幸

全国大会講演論文集 / 情報処理学会 [編] 71 巻 ( 3 ) 頁： "3 - 301"-"3-302" 2009年3月

実店舗における商品購買時の迷い検出システムの構築査読有り Open Access

荒木貴好, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

全国大会講演論文集 71 巻 ( 0 ) 頁： 303-304 2009年3月

FASH : 圧力センサを用いた歩行時の疲労検知

米川賢治, 米澤拓郎, 由良淳一, 中澤仁, 高汐一紀, 徳田英幸

全国大会講演論文集 71 巻 ( 0 ) 頁： 301 - 302 2009年3月

SYNTHETIC STUDIES OF MANGOSTIN DERIVATIVES WITH AN INHIBITORY ACTIVITY ON PDGF-INDUCED HUMAN AORTIC SMOOTH CELLS PROLIFERATION 査読有り Open Access

Nishihama, Y; Ogamino, T; Shi, WL; Cha, BY; Yonezawa, T; Teruya, T; Nagai, K; Suenaga, K; Woo, JT; Nishiyama, S

HETEROCYCLES 77 巻 ( 2 ) 頁： 759 - 765 2009年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Heterocycles

The mangostin derivatives 310, were synthesized by halogenation, electrochemical oxidation, and mCPBA oxidation of α- and γ-mangostins (1, 2). Among them, the hydroxyl 9 and the benzopyran 10 derivatives produced by mCPBA, showed remarkable antiproliferative activities against human aortic smooth muscle cells (HASMC) induced by platelet-derived growth factor (PDGF). © 2009 The Japan Institute of Heterocyclic Chemistry All rights reserved.

DOI： 10.3987/COM-08-S(F)65

SOEML: Smart object events modeling language based on temporal intervals 査読有り

Yonezawa T., Nakazawa J., Kunito G., Nagata T., Tokuda H.

International Journal of Multimedia and Ubiquitous Engineering 4 巻 ( 3 ) 頁： 73 - 92 2009年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：International Journal of Multimedia and Ubiquitous Engineering

This paper proposes a smart object event modeling language. By attaching sensor nodes to everyday objects, users can augment the objects digitally and apply the objects into various services. When creating such smart object services, users should define events, such as beverage of a cup turns cold or someone sits down on a chair, using physical values from sensors. The most common event definition for end-users is simply describing threshold of sensor values and boolean operation. When they want to define more complex events, such as multiple people sit down on chairs or a user starts to study using a pen and a notebook, they need to use a programming language. To define such complex event easily without complex programming language, we present a new event description language called SOEML based on temporal relation among simple events. We also provide users a visual interface to support users defining or reusing events easily.

FASH: Detecting tiredness of walking people using pressure sensors 査読有り

Yonekawa K., Yonezawa T., Nakazawa J., Tokuda H.

2009 6th Annual International Conference on Mobile and Ubiquitous Systems Networking and Services Mobiquitous 2009 頁： 1 - 6 2009年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：2009 6th Annual International Conference on Mobile and Ubiquitous Systems Networking and Services Mobiquitous 2009

The number of elders who encounter falling accidents has been increasing in the past few decades. Falling accidents could cause major injuries, such as having bruise, breaking bone, and in the worst case, losing life. Therefore, preventing elders from falling accidents is important in order to ensure the quality of life. In this paper, we propose Fatigue Alerting SHoes (FASH), a pair of shoes which detects the fatigue of walking people. There are three effects of fatigue on gait, and FASH system acquires all of them to improve the accuracy of fatigue detection. FASH system uses pressure sensors embedded in a pair of shoes to detect the tiredness, and notifies the user of "Tiredness Scale," a scale we defined in order to show the degree of tiredness. Through the evaluation, we affirmed the availability of using pressure sensor to detect accumulation of tiredness. We also confirmed the difference between the physical tiredness and the subjective feeling toward tiredness, which signifies the importance of acknowledging the user of his/her fatigue.

DOI： 10.4108/ICST.MOBIQUITOUS2009.6894

センサネットワークによるユビキタスサービス : モノのスマート化と環境の見える化(<特集>センシングネットワーク:目的指向編) Open Access

徳田英幸, 米澤拓郎, 伊藤昌毅

人工知能 23 巻 ( 4 ) 頁： 447 - 452 2008年7月

スマートオブジェクトサービスのための時間的関係性を考慮したイベント記述方式の提案査読有り

米澤拓郎, 中澤仁, 榊原寛, 國頭吾郎, 永田智大, 徳田英幸

情報処理学会研究報告ユビキタスコンピューティングシステム（UBI） 2008 巻 ( 18 ) 頁： 75-82 2008年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）

本研究ではセンサノードが取り付けられた日常物（以下スマートオブジェクト）を利用し，多様なサービスをユーザ自身が構築できる環境を実現するため，時間的関係性を考慮したイベント記述方式を提案する．スマートオブジェクトサービスを構成するモノに関するイベントの検知を行うためには，イベントをセンサの物理値に置き換えてモデリングする必要がある．従来の手法ではセンサの閾値設定及び単純な論理演算を用いたイベントモデリングが一般的であり，より複雑なイベントを記述するためには汎用プログラミング言語での作成をユーザに強いる必要があった．本研究では，イベント同士の具体的な時間的関係性を記述可能とすることにより，より多様なイベントをユーザ自身が容易に記述できる手法を提案する．This paper proposes event description language using temporal logic for creating various services with smart object. By attaching sensor nodes to everyday objects, users can augment the objects digitally and take the objects into various services. When creating such smart object services, users should de・］e event using physical value from sensors. The most common event is de・］ed by describing simple threshold of sensor value and logical operation. Therefore, when end-users want to de・］e more complex event, they need to use hard programming language such as C or Java. For de・］ing such complex event easily without complex programming language, our research proposes a new event description language based on temporal logic.

スマートオブジェクトサービスのための時間的関係性を考慮したイベント記述方式の提案査読有り

米澤拓郎, 中澤仁, 榊原寛, 國頭吾郎, 永田智大, 徳田英幸

情報処理学会研究報告モバイルコンピューティングとユビキタス通信（MBL） 2008 巻 ( 18 ) 頁： 75-82 2008年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）

本研究ではセンサノードが取り付けられた日常物（以下スマートオブジェクト）を利用し，多様なサービスをユーザ自身が構築できる環境を実現するため，時間的関係性を考慮したイベント記述方式を提案する．スマートオブジェクトサービスを構成するモノに関するイベントの検知を行うためには，イベントをセンサの物理値に置き換えてモデリングする必要がある．従来の手法ではセンサの閾値設定及び単純な論理演算を用いたイベントモデリングが一般的であり，より複雑なイベントを記述するためには汎用プログラミング言語での作成をユーザに強いる必要があった．本研究では，イベント同士の具体的な時間的関係性を記述可能とすることにより，より多様なイベントをユーザ自身が容易に記述できる手法を提案する．This paper proposes event description language using temporal logic for creating various services with smart object. By attaching sensor nodes to everyday objects, users can augment the objects digitally and take the objects into various services. When creating such smart object services, users should de・］e event using physical value from sensors. The most common event is de・］ed by describing simple threshold of sensor value and logical operation. Therefore, when end-users want to de・］e more complex event, they need to use hard programming language such as C or Java. For de・］ing such complex event easily without complex programming language, our research proposes a new event description language based on temporal logic.

Area-Based Activity Information Preservation Mechanism for Ubiquitous Sensor Environment 査読有り

Hiroshi Sakakibara, Takuro Yonezawa, Jin Nakazawa, Hideyuki Tokuda

INSS 2008: PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON NETWORKED SENSING SYSTEMS 頁： 119 - 122 2008年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IEEE

Recent years have seen active development of context-aware applications and systems that helps the development. However, it suffers from increasing fears for leakages of users' activity information to other users unconsciously, since the owner of the activity information included in the sensor data is not treated in context-aware systems. We propose the Area-Based Activity Information Preservation (ABAIP) system that enables users to control the level of data resolution of their activity information to allow applications to use. Degrading sensor data resolution causes coarse grained context recognition. The system prevents unconscious and unnecessary activity information leakage amongst the ABAIP system users, while providing ubiquitous sensor environment for various kinds of ubiquitous software.

Markit：デジタルスクラッピングシステムの設計と実装

川添瑞木, 米澤拓郎, 高汐一紀, 徳田英幸

情報処理学会研究報告ユビキタスコンピューティングシステム（UBI） 2007 巻 ( 118 ) 頁： 105 - 112 2007年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

近年，デジタルメディアの普及により，従来では紙メディアのみを対象としていたスクラッピングにおいても，デジタルメディアが用いられるようになった．紙メディアとデジタルメディア両者を対象とするスクラッピングの中でも，紙メディアからデジタルメディアへ変換し，蓄積する形態のスクラッピングは，その有用性に反して複雑で面倒な作業が人々の負担となっている．本稿では，紙からデジタルへのスクラッピングを，手間のかかる作業を伴わずに行う手法を紹介する．さらに，人が興味を持ったことの現れである印付けを用いたスクラッピングシステム Markit を構築する．本システムによって，ユーザは面倒な作業による負担を感じることなく，紙メディアからデジタルメディアへのスクラッピングができる．Spread of information technology has changed the form of information scrapping from only paper media to digital media. However, to scrap information from paper media to digital media is still burden task for users; they must capture information digitally by camera or OCR, and organize information manually. This research focuses to reduce the cost for scrapping physical media as digital media. For this purpose, we propose Markit - scrapping system using marking interaction. Users can capture physical information of their interest digitally only by marking them with sticky. We evaluate the usefulness of Markit interaction through usability test.

momo!：バイタルセンサを用いた気分の解析と雰囲気の可視化

山本純平, 徳田義幸, 川添瑞木, 米澤拓郎, 高汐一紀, 徳田英幸

情報処理学会研究報告ユビキタスコンピューティングシステム（UBI） 2007 巻 ( 118 ) 頁： 79 - 86 2007年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

我々が日常で直感的に感じ取っている雰囲気を，場のコンテクストとして抽出することができれば，有用性が高く，様々なアプリケーションが期待できる．しかし，何らかの方法で雰囲気を抽出しても，正しいのか実証することが難しいため，雰囲気を抽出するモデルは確立されていない．本研究では，「場に存在する気分の集合」を可視化することで，雰囲気を伝達することができる可能性に着目し，地図上への可視化によって，雰囲気を表現する．本稿では，モバイルセンサを用いて気分を４種類に分類し，雰囲気の抽出・可視化を行う momo! システムを提案し，評価実験から気分の解析手法の妥当性について述べ，雰囲気を抽出する一つの可能性を見出す.Many context analyses have been done in recent years with the high-end sensor equipment. Also, some research work on extracting "atmosphere", which is the feeling that an event or place gives you. However, every atmosphere produced is depended on one's feeling or the mood that they are in, and it is difficult to analyze it in a public space with an existing research. In this research, we try to demonstrate these atmospheres visible with the "momo!" system, by using vital sensors to analyze the mood. The research goal is to apply various services with the technology of atmosphere extraction.

Self-organizable panel for assembling DIY ubiquitous computing 査読有り

Kohtake, N; Ohsawa, R; Yonezawa, T; Iwai, M; Takashio, K; Tokuda, H

PERSONAL AND UBIQUITOUS COMPUTING 11 巻 ( 7 ) 頁： 591 - 606 2007年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Personal and Ubiquitous Computing

This paper proposes the concept of DIY (do-it-yourself) ubiquitous computing, an architecture allowing non-experts to establish ubiquitous computing environments in the real world. This concept has been implemented in the "u-Texture", which is a self-organizable panel that works as a building block. While the traditional scheme attaches devices such as computers, sensors, and network equipments externally to make everyday objects smart, the u-Texture has these devices built in beforehand to assemble smart objects. The u-Texture can change its own behavior autonomously through recognition of its location, its angle of inclination, and surrounding environment by assembling these factors physically. This paper describes the design, the implementation, and various applications of u-Textures to confirm that the concept can contribute to establishment of ubiquitous computing environments in the real world without expert users. © Springer-Verlag London Limited 2006.

DOI： 10.1007/s00779-006-0118-z

Spot & Snap：DIY Smart Object Service を実現するセンサノードと日用品の関連付けインタラクション Open Access

米澤拓郎, 榊原寛, 中澤仁, 高汐一紀, 徳田英幸

情報処理学会論文誌 48 巻 ( 3 ) 頁： 1381 - 1392 2007年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

本論文は，ユーザ自身が日用品にセンサノードを取り付け利用するDIY（do-it-yourself）Smart Object Services と，それを実現するための，センサノードとモノの情報を関連付けインタラクションSpot & Snap を提案する．センサノードを取り付けた日用品Smart Object を利用したサービスでは，センサノードと日用品の意味的な関連付けが必要である．しかし関連付け作業は複数のステップからなり，一般家庭のユーザが行うには困難で煩わしい作業である．本論文ではこの問題を解決するため，スポットライトが取り付けられたカメラを利用した関連付け手法Spot & Snap を考案・実装し，Spot & Snap を利用したアプリケーションを構築した．また実装システムの性能とユーザビリティについて実験を行って評価し，有用性を示した．Spot & Snap は，センサノードが取り付けられたモノにスポットライトを照射するという1 つのインタラクションで容易に関連付けを行える．また同時に，アプリケーション開発者にとってSmart Object Service を実現するアプリケーションフレームワークを提供する．This paper introduces the concept of DIY (do-it-yourself) Smart Objects Services that enables non-expert users to apply smart object services for everyday life. When using smart object services, a semantic connection between sensor node and domestic objects must be made before services function properly. At home, however, professional assistance with such installation may be either unavailable or too costly. Spot & Snap solves this problem by easing of such association with use of a USB camera and an LED spotlight. With Spot & Snap, nonexpert users can register their belongings to preferred services without experts by taking their pictures. It also provides application framework to create various smart object services. This paper describes the prototype implementation of Spot & Snap and a range of its applications. In addition, it evaluates Spot & Snap through capability and usability experiments.

ユビキタス環境構築のためのブロック型情報機器連携技法査読有り Open Access

神武直彦, 大澤亮, 米澤拓郎, 高汐一紀, 徳田英幸

情報処理学会論文誌 48 巻 ( 3 ) 頁： 1405-1416 2007年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）

ユビキタスコンピューティング環境の普及にともない，その環境を利用者が自分自身で構築できることが重要になってきている．その実現のためには，利用者の認知的負荷を増加させることなく複数の情報機器を連携させ，ユビキタスコンピューティング環境を構築，拡張することが可能なユーザインタフェースが必要である．本論文では，組み立てることで自己組織化するブロック型情報機器u-Texture II を提案する．利用者はu-Texture II どうしを接続することで様々な形に組み立てることができる．それに対し，u-Texture II は組み立てられた形状を自律的に認識し，形状に対応して機能を変化させ，複数で連携して動作することが可能である．With diffusion of ubiquitous computing environments, it is essential that non-expert users can create ubiquitous computing environment by themselves. Compared with computer users who are mainly engineers or experts, ubiquitous computing users are varied and a friendly user interface is desired. This paper proposes collaboration scheme based on blockable appliances for ubiquitous computing environment. This collaboration scheme has been implemented in the u-Texture II, which is a self-organizable panel that works as a building block. The u- Texture II can change its own behavior through recognition of its location, its inclination, and surrounding environment by assembling these factors physically. This paper describes the design, the implementation, and various applications of u-Texture II to confirm that the collaboration scheme can contribute to establishment of ubiquitous computing environments without expert users.

日常物とセンサノードの関連付け手法の提案査読有り

米澤拓郎, 榊原寛, 中澤仁, 永田智大, 高汐一紀, 徳田英幸

情報処理学会研究報告モバイルコンピューティングとユビキタス通信（MBL） 2007 巻 ( 14 ) 頁： 179-186 2007年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）

本研究では日常物（以下モノ）とセンサノードの容易は関連付け手法Stop&Snapを提案する．現在超小型センサノードを裳のに取り付け，そのモノの状態を利用したサービスの研究が盛んである．しかし，誰がモノにセンサノードを取り付けるか，そのモノとセンサノードとの関連性は誰が入力するのか，といった問題が存在する．本稿では，ユーザ自身が身の回りのモノにセンサノードの取り付け・関連づけを行い，低コストで自由度の高いサービス利用環境を実現するために，スポットライトとカメラを利用した容易な関連付け手法Stop&Snapを提案する。また，Stop&Snapのプロトタイプを実装し，Stop&Snapを利用した多様なアプリケーショ例を示すことでその有用性を議論する．更にその操作実験を通じ，平均4秒以内の即興的な関連付けが行えることを示す．This paper introduces Spot & Snap interaction technique that enables end-users to associate sensor nodes to everyday-life objects easily. By attaching sensor nodes to everyday-life objects, are what we call smart objects, users can augment the objects digitally. When using smart object services, a semantic connection between sensor node and objects must be made before services function properly. At home, however, professional assistance with such installation may be either unavailable or too costly. Spot & Snap solves this problem by easing of such association with use of a USB camera and an LED spotlight. With Spot & Snap, non-expert users can register their belongings to preferred services without experts by taking their pictures. It also provides application framework to create various smart object services. This paper describes the prototype implementation of Spot & Snap and a range of its applications. In addition, it evaluates Spot & Snap through capability and usability experiments.

日常物とセンサノードの関連付け手法の提案査読有り

米澤拓郎, 榊原寛, 中澤仁, 永田智大, 高汐一紀, 徳田英幸

情報処理学会研究報告ユビキタスコンピューティングシステム（UBI） 2007 巻 ( 14 ) 頁： 179-186 2007年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）

本研究では日常物（以下モノ）とセンサノードの容易は関連付け手法Stop&Snapを提案する．現在超小型センサノードを裳のに取り付け，そのモノの状態を利用したサービスの研究が盛んである．しかし，誰がモノにセンサノードを取り付けるか，そのモノとセンサノードとの関連性は誰が入力するのか，といった問題が存在する．本稿では，ユーザ自身が身の回りのモノにセンサノードの取り付け・関連づけを行い，低コストで自由度の高いサービス利用環境を実現するために，スポットライトとカメラを利用した容易な関連付け手法Stop&Snapを提案する。また，Stop&Snapのプロトタイプを実装し，Stop&Snapを利用した多様なアプリケーショ例を示すことでその有用性を議論する．更にその操作実験を通じ，平均4秒以内の即興的な関連付けが行えることを示す．This paper introduces Spot & Snap interaction technique that enables end-users to associate sensor nodes to everyday-life objects easily. By attaching sensor nodes to everyday-life objects, are what we call smart objects, users can augment the objects digitally. When using smart object services, a semantic connection between sensor node and objects must be made before services function properly. At home, however, professional assistance with such installation may be either unavailable or too costly. Spot & Snap solves this problem by easing of such association with use of a USB camera and an LED spotlight. With Spot & Snap, non-expert users can register their belongings to preferred services without experts by taking their pictures. It also provides application framework to create various smart object services. This paper describes the prototype implementation of Spot & Snap and a range of its applications. In addition, it evaluates Spot & Snap through capability and usability experiments.

uPackage - A package to enable do-it-yourself style ubiquitous services with daily objects 査読有り

Yonezawa Takuro, Sakakibara Hiroshi, Koizumi Kengo, Miyajima Shingo, Nakazawa Jin, Takashio Kazunori, Tokuda Hideyuki

UBIQUITOUS COMPUTING SYSTEMS, PROCEEDINGS 4836 巻頁： 240-+ 2007年

uPackage - A package to enable do-it-yourself style ubiquitous services with daily objects 査読有り

Yonezawa T.

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 4836 巻頁： 240 - + 2007年

Privacy respected ubiquitous sensor environment 査読有り

Hiroshi Sakakibara, Takuro Yonezawa, Jin Nakazawa, Hideyuki Tokuda

INSS 07: Proceedings of the Fourth International Conference on Networked Sensing Systems 頁： 297 - 297 2007年

Synthesis, single crystal X-ray analysis, and TEM for a single-sized Au11 cluster stabilized by SR ligands: The interface between molecules and particles 査読有り

Nunokawa K., Onaka S., Ito M., Horibe M., Yonezawa T., Nishihara H., Ozeki T., Chiba H., Watase S., Nakamoto M.

Journal of Organometallic Chemistry 691 巻 ( 4 ) 頁： 638 - 642 2006年2月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Organometallic Chemistry

An SR-modified Au cluster with a sub-nanometer size, Au <inf>11</inf>(S-4-NC<inf>5</inf>H<inf>4</inf>)<inf>3</inf>(PPh<inf>3</inf>) <inf>7</inf> (1), has been synthesized by NaBH<inf>4</inf> reduction of Au(S-py)(PPh<inf>3</inf>) or by reacting [Au<inf>9</inf>(PPh<inf>3</inf>) <inf>8</inf>](NO<inf>3</inf>)<inf>3</inf> with HS-4-py in good yield. Its molecular structure has been elucidated by single crystal X-ray diffraction, and TEM observation has been achieved for the first time for this size of SR-modified Au clusters. The core structure is best described in terms of an incomplete icosahedron. CV measurements in CH<inf>2</inf>Cl<inf>2</inf> have suggested that the cluster does not coagulate in solution with significant concentration. © 2005 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jorganchem.2005.09.043

Gradually changing expression of singing voice based on morphing 査読有り

Yonezawa T., Suzuki N., Mase K., Kogure K.

9th European Conference on Speech Communication and Technology 頁： 541 - 544 2005年12月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：9th European Conference on Speech Communication and Technology

We have developed a method for synthesizing a singing voice by gradually changing the musical expression based on speech morphing. This paper shows the advantages of this method in comparison with the approach of binary discrete transformation between two expressions, confirmed by statistical analyses of perception tests. In order to synthesize different expressional strengths of a singing voice, a "normal" (without expression) voice of a particular singer is used as the base of morphing, and three different expressions, "dark," "whispery" and "wet," are used as the target. Through our experiments, we confirmed i) the proposed morphing algorithm effectively interpolates the expressional strength of a singing voice, ii) an approximate equation of the perceptual sense can be used to calculate the morph ratio at a perceptually linear interval, and iii) our gradual transformation method can generate a natural singing voice from the interpolation of two different expressions.

シームレスサービスを目指したマイクロホットスポット連携査読有り

岩井将行, 神武直彦, 門田昌哉, 高橋元, 米澤拓郎, 望月陽介, 望月祐洋, 清水博文, 戸辺義人, 高汐一紀, 徳田英幸

情報処理学会研究報告. MBL, [モバイルコンピューティングとユビキタス通信研究会研究報告] = IPSJ SIG technical reports 2005 巻 ( 32 ) 頁： 15 - 21 2005年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人情報処理学会

ユビキタス環境の研究が盛んに行われる中で, 限られた一部の屋内環境において知的環境を構築することが可能となった. しかしユーザが今後求めるものはより広域で長いスパンでのサービス提供を行う基盤技術であり, ユビキタス環境間の連携を推し進める研究が必要である. 慶應義塾大学, 東京電機大学, 東京工業大学が中心になり, シームレスサービスを目指したマイクロホットスポット連携の研究を行った. 本稿ではその報告を行う.

シームレスサービスを目指したマイクロホットスポット連携査読有り

岩井将行, 神武直彦, 門田昌哉, 高橋元, 米澤拓郎, 望月陽介, 望月祐洋, 清水博文, 戸辺義人, 高汐一紀, 徳田英幸

情報処理学会研究報告ユビキタスコンピューティングシステム（UBI） 2005 巻 ( 28 ) 頁： 15-21 2005年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）

ユビキタス環境の研究が盛んに行われる中で，限られた一部の屋内環境において知的環境を構築することが可能となった. しかしユーザが今後求めるものはより広域で長いスパンでのサービス提供を行う基盤技術であり，ユビキタス環境{\bf 間}の連携を推し進める研究が必要である．慶應義塾大学，東京電機大学，東京工業大学が中心になり，シームレスサービスを目指したマイクロホットスポット連携の研究を行った．本稿ではその報告を行う．Research for ubiquitous environment has enabled the creation of Smart Environment within a limited part of an indoor colosed enviroment. However, users require that this same enviroment can be available within a wider span, thus resulting in the need to extend collaboration of services in remote ubiquitous environments. Our research group (Keio University, Tokyo Denki University, and Tokyo Institute of Technology) has created a seamless service collaboration system called "micro-hot-spot", and will report it in this paper.

u-Texture: Self-organizable universal panels for creating smart surroundings 査読有り

Kohtake, N; Ohsawa, R; Yonezawa, T; Matsukura, Y; Iwai, M; Takashio, K; Tokuda, H

UBICOMP 2005: UBIQUITOUS COMPUTING, PROCEEDINGS 3660 巻頁： 19 - 36 2005年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

This paper introduces a novel way to allow non-expert users to create smart, surroundings. Non-smart everyday objects such as furniture and appliances found in homes and offices can be converted to smart, ones by attaching computers, sensors, and devices. In this way, non-smart, components that, form non-smart objects are made smart in advance. For our first prototype, we have developed u-Texture, a self-organizable universal panel that works as a building block. The u-Texture can change its own behavior autonomously through recognition of its location, its inclination, and surrounding environment by assembling these factors physically. We have demonstrated several applications to confirm that u-Textures can create smart surroundings easily without expert, users. © Springer-Verlag Berlin Heidelberg 2005.

DOI： 10.1007/11551201_2

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