Faculty Profiles - YONEZAWA Takuro

Papers - YONEZAWA Takuro

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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 Reviewed

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） Vol. 2013 ( 48 ) page： 1-2 2013.5

Language：Japanese Publishing type：Research paper (scientific journal)

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．

CiNii Research

Virtual Sensor Networks: Its Principles and Applications Reviewed

Jin Nakazawa, Takuro Yonezawa, Tomotaka Ito, Kazunori Takashio, Hideyuki Tokuda

Vol. 2013 ( 17 ) page： 1 - 6 2013.5

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Information Processing Society of Japan (IPSJ)

This paper proposes a infrastructural mechanism, called Virtual Networked Sensing (VNS), which is capable of creating virtual networks of sensors coping with concerns of applications and integrating a variety of in-network services to ease application development. It enables appications to create a Virtual Sensor Network (VSN), to which it can map existing sensors based on its concerns, such as environmental monitoring and detecting group activities in a city. This paper shows the mechanism's features by introducing an actual application and its behavior.

CiNii Research

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 Reviewed

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） Vol. 2013 ( 21 ) page： 1-8 2013.5

Language：Japanese Publishing type：Research paper (scientific journal)

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．

CiNii Research

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） Vol. 2013 ( 47 ) page： 1 - 2 2013.5

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：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．

CiNii Research

Fragwrap: Fragrance-encapsulated and projected soap bubble for scent mapping Reviewed

Yutaro Kyono, Hideyuki Tokuda, Takuro Yonezawa, Hiroki Nozaki, Jin Nakazawa

UbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing page： 311 - 314 2013

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ACM

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

Scopus

Reinforcing co-located communication practices through interactive public displays Reviewed

Masaki Ogawa, Jin Nakazawa, Marko Jurmu, Kazunori Takashio, Tomotaka Ito, Hideyuki Tokuda, Takuro Yonezawa

UbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing page： 737 - 740 2013

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ACM

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

Scopus

PARnorama: 360 Degree interactive video for augmented reality prototyping Reviewed

Matthias Berning, Jin Nakazawa, Takuro Yonezawa, Michael Beigl, Till Riedel, Hide Tokuda

UbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing page： 1471 - 1474 2013

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ACM

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

Scopus

Evercopter: Continuous and adaptive over-the-air sensing with detachable wired flying objects Reviewed

Yutaro Kyono, Tomotaka Ito, Takuro Yonezawa, Jin Nakazawa, Hiroki Nozaki, Kazunori Takashio, Masaki Ogawa

UbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing page： 299 - 302 2013

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ACM

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

Scopus

Second-sighted glasses : Discovering and understanding context-Aware services with augmented reality technique Reviewed

Takuro Yonezawa, Hideyuki Tokuda

Proceedings of the SICE Annual Conference page： 2386 - 2391 2013

Temperature distributions of electron beam-irradiated samples by scanning electron microscopy Reviewed

Tokunaga, T; Narushima, T; Yonezawa, T; Sudo, T; Okubo, S; Komatsubara, S; Sasaki, K; Yamamoto, T

JOURNAL OF MICROSCOPY Vol. 248 ( 3 ) page： 228 - 233 2012.12

Language：English Publishing type：Research paper (scientific journal) Publisher：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

Web of Science

Scopus

PubMed

Detection, classification and visualization of place-triggerd geotagged tweets Reviewed

Hiruta S., Yonezawa T., Jurmu M., Tokuda H.

Ubicomp 12 Proceedings of the 2012 ACM Conference on Ubiquitous Computing page： 956 - 963 2012.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：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.

Scopus

LiDSN: A method to deploy wireless sensor networks securely based on light communication Reviewed

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 page： 539 - 540 2012.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：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.

Scopus

Empowering Human and Objects with Virtual Networked Sensing and Applications

TOKUDA Hideyuki, NAKAZAWA Jin, YONEZAWA Takuro, AIDA Haruto, ITO Tomotaka

IEICE technical report. Information networks Vol. 112 ( 230 ) page： 49 - 53 2012.10

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会

We presents Virtual Networked Sensing architecture, which integrates multiple physical sensor network as virtual sensor network to create various applications. We also develop 3 categories of applications-Sense of Objects, Sense of People and Sense of Society, based on Virtual Networked Sensing architecture.

CiNii Research

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） Vol. 2012 ( 8 ) page： 1 - 8 2012.7

Language：Japanese Publishing type：Research paper (scientific journal)

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．

CiNii Research

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） Vol. 2012 ( 8 ) page： 1 - 8 2012.7

Language：Japanese Publishing type：Research paper (scientific journal)

CiNii Research

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） Vol. 2012 ( 3 ) page： 1 - 6 2012.7

Language：Japanese Publishing type：Research paper (scientific journal)

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．

CiNii Research

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） Vol. 2012 ( 3 ) page： 1 - 6 2012.7

Language：Japanese Publishing type：Research paper (scientific journal)

CiNii Research

A-15-20 Implementation and Evaluation of Vibration-based Information Transfer for Smart Devices Reviewed

Yonezawa Takuro, Nakazawa Jin, Tokuda Hideyuki

Proceedings of the IEICE General Conference Vol. 2012 page： 240 - 240 2012.3

D-5-1 Detection and Visualization of Place-triggered Geotagged Tweets Reviewed

Hiruta Shinya, Yonezawa Takuro, Nakazawa Jin, Takashio Kazunori, Tokuda Hideyuki

Proceedings of the IEICE General Conference Vol. 2012 ( 1 ) page： 48 - 48 2012.3

Detection, Classification and Visualization of Place-triggerd Geotagged Tweets Reviewed

Hiruta, S; Yonezawa, T; Jurmu, M; Tokuda, H

UBICOMP'12: PROCEEDINGS OF THE 2012 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING page： 956 - 963 2012

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Papers - YONEZAWA Takuro