Kouichi HIROTA
| Department of Informatics | Professor |
| Cluster I (Informatics and Computer Engineering) | Professor |
Researcher Information
Career
- 01 Apr. 2016
The University of Electro-Communications, Graduate School of Informatics and Engineering, Professor - 01 Apr. 2015 - 31 Mar. 2016
The University of Electro-Communications, 大学院情報システム学研究科, 教授 - 01 Jul. 2012 - 31 Mar. 2015
The University of Tokyo, 大学院 情報学環, 准教授 - 01 Apr. 2007 - 30 Jun. 2012
The University of Tokyo, 大学院 新領域創成科学研究科, 准教授 - 01 Feb. 2005 - 31 Mar. 2007
The University of Tokyo, 大学院 新領域創成科学研究科, 助教授 - 01 Jan. 2000 - 31 Jan. 2005
The University of Tokyo, 先端科学技術研究センター, 助教授 - 01 Apr. 1995 - 31 Dec. 1999
Toyohashi University of Technology, 工学部, 助手
Research Activity Information
Paper
- Deformation Matching: Force Computation Based on Deformation Optimization
Koichi Hirota; Yusuke Ujitoko; Sho Sakurai; Takuya Nojima
IEEE Transactions on Haptics, 15, 2, 267-279, Apr. 2022, Peer-reviwed
Scientific journal, English - Effect of the Opponent’s Appearance on Interpersonal Cognition that Affects User-to-User Relationship in Virtual Whole-Body Interaction
Sho Sakurai; Takumi Goto; Takuya Nojima; Koichi Hirota
J. Robot. Mechatron., 33, 5, 1029-1042, 20 Oct. 2021, Peer-reviwed
Scientific journal, English - Developing the Thrower Detection System for Seamless Player-Ball Interaction in Augmented Dodgeball
Kadri Rebane; David Hörnmark; Ryota Shijo; Sho Sakurai; Koichi Hirota; Takuya Nojima
日本VR学会論文誌, 日本VR学会, 26, 2, 129-138, 30 Jun. 2021, Peer-reviwed
Scientific journal, English - Impact Vibration Source Localization in Two-Dimensional Space Around Hand.
Yusuke Ujitoko; Ryunosuke Tokuhisa; Sho Sakurai; Koichi Hirota
IEEE transactions on haptics, PP, 01 Jun. 2021, True, This study investigated the localization ability of an impulse vibration source outside the body in two-dimensional space. We tested whether humans can recognize the direction or distance of an impulse vibration source when using their hand to detect spatiotemporal vibrotactile information provided by the propagated vibrational wave from the source. Specifically, we had users put their hands on a silicone rubber sheet in several postures. We asked users to indicate the position of the vibration source when a location on the sheet was indented. Experimental results suggested that the direction of the impact vibration source can be recognized to some extent, although recognition accuracy depends on hand posture and the position of the vibration source. The best results were achieved when the fingers and palm were grounded and a vibration source was presented around the middle fingertip, and the directional recognition error in this case was 6 degree. In contrast, results suggest it is difficult to accurately recognize the distance of the vibration. The results of this study suggest a new possibility for directional display where vibrotactile actuators are embedded at a distance from the user's hand.
Scientific journal, English - Augmenting Team Games With a Ball to Promote Cooperative Play
Kadri Rebane; Yo Inoue; David Hörnmark; Ryota Shijo; Sho Sakurai; Koichi Hirota; Takuya Nojima
Augment Human Research, 6, 7, 07 Apr. 2021, Peer-reviwed
Scientific journal, English - A Study on the Integration Method of Sports Practice and Video Games.
Sakuto Hoshi; Kazutaka Kurihara; Sho Sakurai; Koichi Hirota; Takuya Nojima
HCI International 2021 - Late Breaking Posters - 23rd HCI International Conference, Springer, 443-450, 2021
International conference proceedings - Effects of Interpupillary Distance and Visual Avatar's Shape on the Perception of the Avatar's Shape and the Sense of Ownership.
Tokio Oka; Takumi Goto; Nobuhito Kimura; Sho Sakurai; Takuya Nojima; Koichi Hirota
Human Interface and the Management of Information. Information Presentation and Visualization - Thematic Area, Springer, 306-321, 2021
International conference proceedings - Grutio: System for Reproducing Swallowing Sensation Using Neck-Skin Movement
Izumi Mizoguchi; Sho Sakurai; Koichi Hirota; Takuya Nojima
IEEE ACCESS, 9, 105297-105307, 2021
Scientific journal, English - Inside Touch: Presentation of Tactile Feeling Inside Virtual Object Using Finger-Mounted Pin-Array Display
Yusuke Ota; Yusuke Ujitoko; Sho Sakurai; Takuya Nojima; Koichi Hirota
IEEE ACCESS, 9, 75150-75157, 2021
Scientific journal, English - Ambre: Augmented Metaphor Based Representation System for Electricity
Shoki Kishida; Sho Sakurai; Koichi Hirota; Takuya Nojima
Proc. UIST'20, 16-18, 20 Oct. 2020, Peer-reviwed
International conference proceedings, English - Toward Augmented Reality Displays for Sports Spectators: A Preliminary Study
Clara Hertzog; Sho Sakurai; Koichi Hirota; Takuya Nojima
Proc. ISEA'20, 129, 22 Jun. 2020, Peer-reviwed
International conference proceedings, English - GAN-Based Fine-Tuning of Vibrotactile Signals to Render Material Surfaces
Yusuke Ujitoko; Yuki Ban; Koichi Hirota
IEEE Access, 8, 16656-16661, 2020, Peer-reviwed
Scientific journal - Licker: A Tongue Robot for Representing Realistic Tongue Motions
Ryota Shijo; Mizuki Nagano; Izumi Mizoguchi; Takahiro Ando; Kanji Tamura; Keigo Hiki; Sho Sakurai; Koichi Hirota; Takuya Nojima
Proc. SIGGRAPH Asia 2019, 27-28, Nov. 2019, Peer-reviwed
International conference proceedings, English - Towards making kinetic garments based on conductive fabric and smart hair
Takuto Hayashi; Masaru Ohkubo; Sho Sakurai; Koichi Hirota; Takuya Nojima
Proc. ISWC '19, 89–90, Oct. 2019, Peer-reviwed
International conference proceedings, English - Virtual Walking Sensation by Prerecorded Oscillating Optic Flow and Synchronous Foot Vibration.
Kitazaki M; Hamada T; Yoshiho K; Kondo R; Amemiya T; Hirota K; Ikei Y
i-Perception, 10, 5, 2041669519882448, Sep. 2019, Peer-reviwed - Presenting Static Friction Sensation at Stick-slip Transition using Pseudo-haptic Effect
Yusuke Ujitoko; Yuki Ban; Koichi Hirota
2019 IEEE World Haptics Conference, WHC 2019, 181-186, Jul. 2019, Peer-reviwed
International conference proceedings - Preliminary Evaluation of Gill-breathing Simulation System Gill+Man
Izumi Mizoguchi; Takahiro Ando; Mizuki Nagano; Ryota Shijo; Sho Sakurai; Koichi Hirota; Takuya Nojima
Proc. IEEE VR 2019, 0-0, 23 Mar. 2019, Peer-reviwed
International conference proceedings, English - 計測に基づく手のリンクモデルの構築
広田光一; 田川和義; 小森 優; 櫻井 翔; 野嶋琢也
日本VR学会 ハプティックス研究会 第22回 予稿集, PI-19-034-043, No.6, 19 Mar. 2019
Symposium, Japanese - Airflow Presentation Method for Turning Motion Feedback in VR Environment.
Yujin Suzuki; Vibol Yem; Koichi Hirota; Tomohiro Amemiya; Michiteru Kitazaki; Yasushi Ikei
International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments, ICAT-EGVE 2019, Posters and Demos, Eurographics Association, 15-16, 2019
International conference proceedings - 身体的追体験の概念の提案と一部機能の試験実装―多感覚・運動情報提示による歩行・走行体験の共有
池井 寧; 広田 光一; 阿部 浩二; 雨宮 智浩; 佐藤 誠; 北崎 充晃
日本バーチャルリアリティ学会論文誌, 特定非営利活動法人 日本バーチャルリアリティ学会, 24, 2, 153-164, 2019, Peer-reviwed
Japanese - Gill+Man: breathing through gills experience system
Izumi Mizoguchi; Takahiro Ando; Mizuki Nagano; Ryota Shijo; Sho Sakurai; Koichi Hirota; Takuya Nojima
Proc. SIGGRAPH Asia 2018 Emerging Technologies, Article No. 4, Dec. 2018, Peer-reviwed
International conference proceedings, English - オフライン運動観察におけるVRアバターの外見や動作が自己身体認識に及ぼす影響
長野 瑞生; 櫻井 翔; 野嶋 琢也; 広田 光一
日本VR学会論文誌, 日本VR学会, 23, 3, 169-177, 30 Sep. 2018, Peer-reviwed
Scientific journal, Japanese - VR ツイスターにおけるアバタのサイズが自己の身体動作に与える影響
長野瑞生; 櫻井翔; 野嶋琢也; 広田光一
日本VR学会第23回大会予稿集, 12B-5, 19 Sep. 2018
Symposium, Japanese - ピンアレイ触力覚ディスプレイを用いた細かな皮膚変形による接線方向への圧覚提示
谷口登章; 櫻井翔; 野嶋琢也; 広田光一
日本VR学会第23回大会予稿集, 32A-1, 19 Sep. 2018
Symposium, Japanese - Airflow for Body Motion Virtual Reality
Kurosawa, M; Ikei, Y; Suzuki, Y; Amemiya, T; Hirota, K; Kitazaki, M
Lecture Notes in Computer Science (LNCS), 10904, 395-402, Jul. 2018, Peer-reviwed
International conference proceedings, Japanese - Squachu: A training game to improve oral function via a non-contact tongue-mouth-motion detection system
Takahiro Ando; Ayano Masaki; Qing Liu; Takafumi Ooka; Sho Sakurai; Koichi Hirota; Takuya Nojima
The 27th International Conference on Advanced Visual Interfaces, May 2018, Peer-reviwed
International conference proceedings, English - Vestibular display for walking sensation in a virtual space
Koichi Shimizu; Yasushi Ikei; Tomohiro Amemiya; Koichi Hirota; Michiteru Kitazaki
Communications in Computer and Information Science, Springer Verlag, 851, 334-339, 2018
International conference proceedings, English - Changing perceived leg length and motion on virtual walking generator
Takeo Hamada; Katsuya Yoshiho; Ryota Kondo; Yasushi Ikei; Koichi Hirota; Tomohiro Amemiya; Michiteru Kitazaki
23rd International Display Workshops in conjunction with Asia Display, IDW/AD 2016, 4, 2261-2264, 2018
International conference proceedings - FiveStar VR: Shareable Travel Experience through Multisensory Stimulation to the Whole Body
Koichi Shimizu; Gaku Sueta; Kentaro Yamaoka; Kazuki Sawamura; Yujin Suzuki; Keisuke Yoshida; Vibol Yem; Yasushi Ikei; Tomohiro Amemiya; Makoto Sato; Koichi Hirota; Michiteru Kitazaki
SA'18: SIGGRAPH ASIA 2018 VIRTUAL & AUGMENTED REALITY, 2018
International conference proceedings, English - Leg-jack: generation of the sensation of walking by electrical and kinesthetic stimuli to the lower limbs.
Hirofumi Kaneko; Tomohiro Amemiya; Vibol Yem; Yasushi Ikei; Koichi Hirota; Michiteru Kitazaki
SIGGRAPH Asia 2018 Emerging Technologies, Tokyo, Japan, December 04-07, 2018, ACM, 6:1-6:2, 2018, Peer-reviwed - Object manipulation by hand with force feedback
Shunsuke Fujioka; Takao Uchiyama; Kazuyoshi Tagawa; Koichi Hirota; Takusya Nojima; Katsuhito Akahane; Makoto Sato
Lecture Notes in Electrical Engineering, Springer Verlag, 432, 261-266, 2018, Peer-reviwed
International conference proceedings, English - Development of a sole pressure display
Tetsuhiro Okano; Kengo Hiki; Koichi Hirota; Takusya Nojima; Michiteru Kitazaki; Yasushi Ikei
Lecture Notes in Electrical Engineering, Springer Verlag, 432, 175-179, 2018, Peer-reviwed
International conference proceedings, English - Substitution of Hand-Object Pressure Cues with the Sole of the Foot for Haptic Presentation Using a Tactile Pin Array
Keigo Hiki; Tetsuhiro Okano; Sho Sakurai; Takuya Nojima; Michiteru Kitazaki; Yasushi Ikei; Koichi Hirota
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Verlag, 10894, 239-251, 2018, Peer-reviwed
International conference proceedings, English - Multi-point Pressure Sensation Display Using Pneumatic Actuators
Takaaki Taniguchi; Sho Sakurai; Takuya Nojima; Koichi Hirota
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Verlag, 10894, 58-67, 2018, Peer-reviwed
International conference proceedings, English - Electrical and Kinesthetic Stimulation for Virtual Walking Sensation
Hirofumi Kaneko; Ren Koide; Yasushi Ikei; Tomohiro Amemiya; Koichi Hirota; Michiteru Kitazaki
Proc. Haptics Symposium 2018, WIP B4, 2018, Peer-reviwed
International conference proceedings, English - TwinCam: Omni-directional stereoscopic live viewing camera for reducing motion blur during head rotation
Kento Tashiro; Toi Fujie; Yasushi Ikei; Tomohiro Amemiya; Koichi Hirota; Michiteru Kitazaki
ACM SIGGRAPH 2017 Emerging Technologies, SIGGRAPH 2017, Association for Computing Machinery, Inc, Article No.24, 30 Jul. 2017, Peer-reviwed
International conference proceedings, English - Vibration on the soles of the feet evoking a sensation of walking expands peripersonal space
Tomohiro Amemiya; Yasushi Ikei; Koichi Hirota; Michiteru Kitazaki
2017 IEEE World Haptics Conference, WHC 2017, Institute of Electrical and Electronics Engineers Inc., 605-610, 21 Jul. 2017, Peer-reviwed
International conference proceedings, English - Resistive swipe: Visuo-haptic interaction during swipe gestures to scroll background images on touch interfaces
Takuji Narumi; Yusuke Ujitoko; Yuki Ban; Tomohiro Tanikawa; Koichi Hirota; Michitaka Hirose
2017 IEEE World Haptics Conference, WHC 2017, 334-339, 21 Jul. 2017, Peer-reviwed
International conference proceedings - なぜ VR 環境では手が使われないのか？
広田 光一
日本バーチャルリアリティ学会誌, 日本バーチャルリアリティ学会, 22, 1, 4-5, 31 Mar. 2017, Invited
Scientific journal, Japanese - Display of 3D Object Shape for Whole Hand using Multipoint Vibration Display Device
山崎 朱華; 坂本 瑛介; 広田 光一; 藤本 雄一郎; 藤田 欣也
日本VR学会研究報告, 電気学会, 2017, 52, 85-90, 27 Mar. 2017
Symposium, Japanese - Evaluation of Airflow Effect on a VR Walk
Masato Kurosawa; Ken Ito; Yasushi Ikei; Koichi Hirota; Michiteru Kitazaki
2017 IEEE VIRTUAL REALITY (VR), 283-284, 2017, Peer-reviwed
International conference proceedings, English - KKse: Safety Education System of the Child in the Kitchen Knife Cooking
Shiho Saito; Koichi Hirota; Takuya Nojima
2017 IEEE VIRTUAL REALITY (VR), 321-322, 2017, Peer-reviwed
International conference proceedings, English - Presenting Pseudo-resistive Force on Touch Interfaces by Controlling a Displacement between the Finger and Background Images
Ujitoko Yusuke; Narumi Takuji; Ban Yuki; Tanikawa Tomohiro; Hirota Koichi; Hirose Michitaka
Transactions of the Virtual Reality Society of Japan, THE VIRTUAL REALITY SOCIETY OF JAPAN, 22, 3, 305-313, 2017, Peer-reviwed,We proposes a novel method that renders haptic perceptions only using a touch screen based on visuo-haptic interaction. Our proposed method evokes a feeling of resistive force by making a discrepancy between the movement of the finger swiping the screen and the background image which moves according to the finger movement. First experiment shows that the proposed method can evoke perception of resistance according to the constant ratio between the displacement of the finger and background image. That is to say, the user perceives strong resistance to move when the background image moves slower than the finger. Moreover, same experiment also suggested that the evoked haptic perception becomes stronger when the method is applied to frequently repeated movements. Second Experiment shows that visibility of the finger on touch screen is important factor for proposed method.
Scientific journal, Japanese - 歩行を模擬した足底振動刺激による身体近傍空間の拡張
雨宮 智浩; 池井 寧; 広田 光一; 北崎 充晃
日本VR学会論文誌, 日本VR学会, 21, 4, 627-633, 2017, Peer-reviwed,The representation of the peripersonal space is remapped by body action such as integrating tactile stimuli from the body's surface with multisensory stimuli presented within a limited distance from the body. Previous study showed that boundaries of the peipersonal space extend while walking with listening to a looming sound, but it is unclear whether the boundaries change when a sensation of walking is induced with no physical body motion. Here, we examine the change using a technique to induce a sensation of pseudo-walking by presenting vibrotactile stimuli of recorded footsteps sound at the feet soles. Experiments were performed to compare the reaction times to detect a vibrotactile stimulus on the chest with listening to a looming sound toward the body, taken as a proxy of the peripersonal space boundary. Experimental evaluations showed that the peripersonal space seems to expand when a sensation of pseudo-walking was clearly induced.
Scientific journal, Japanese - A new experience presentation in VR2.0
Yasushi Ikei; Tomohiro Amemiya; Koichi Hirota; Michiteru Kitazaki
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Verlag, 10274, 134-143, 2017, Peer-reviwed
International conference proceedings, English - 空気圧駆動ピンを用いた多点圧覚提示デバイス
谷口 登章; 櫻井 翔; 野嶋 琢也; 広田 光一
日本VR学会第22回大会予稿集, 2D1-04, 2017
Symposium, Japanese - pompomモデルに基づく和菓子の粒子ベース変形シミュレーション
山内 博貴; 田川 和義; 広田 光一; 田中 弘美
日本VR学会第22回大会予稿集, 1C4-02, 2017
Symposium, Japanese - VRツイスターにおけるアバタの外見がゲームプレイに及ぼす影響の評価
長野 瑞生; 櫻井 翔; 野嶋 琢也; 広田 光一
日本VR学会第22回大会予稿集, 1A4-06, 2017
Symposium, Japanese - 時間的制約下での創造的作業における時計の認識調査
吉永 亮佑; 櫻井 翔; 伴 祐樹; 野嶋 琢也; 広田 光一
日本VR学会第22回大会予稿集, 3A2-01, 2017
Symposium, Japanese - 歩行のVR表現のための前庭感覚提示手法に関する研究
清水 広一; 池井 寧; 雨宮 智浩; 広田 光一; 北崎 充晃
日本VR学会第22回大会予稿集, 2D1-02, 2017
Symposium, Japanese - 心エコーシミュレータにおけるシミュレート画像生成アルゴリズムの検討
田村 莞爾; 広田 光一; 野島 琢也; 杉浦 清了; 久田 俊明
日本VR学会第22回大会予稿集, 1E2-04, 2017
Symposium, Japanese - 主体感によるVR操作性の向上
藤岡 駿介; 広田 光一; 野嶋 琢也; 赤羽 克仁; 佐藤 誠
日本VR学会第22回大会予稿集, 1C3-04, 2017
Symposium, Japanese - 歩行感覚提示デバイスにおいて歩行運動に含まれている感情を提示する可能性に関する研究
楊暢; 櫻井翔; 広田光一; 野嶋琢也; 北崎充晃; 池井寧
日本VR学会研究報告, VRUR2, No.10, 28 Dec. 2016
Symposium, Japanese - Tactile Apparent Motion on the Torso Modulates Perceived Forward Self-Motion Velocity
Tomohiro Amemiya; Koichi Hirota; Yasushi Ikei
IEEE TRANSACTIONS ON HAPTICS, 9, 4, 474-482, Oct. 2016, Peer-reviwed
Scientific journal, English - 空気圧駆動型デバイスを用いた足裏への触覚提示による物体の位置認識
岡野 哲大; 日岐 桂吾; 広田 光一; 野嶋 琢也; 北崎 充晃; 池井 寧
日本VR学会第21回大会予稿集, 11A-05, 14 Sep. 2016
Symposium, Japanese - 下肢運動による歩行感覚表現の特性に関する研究
小出 蓮; 池井 寧; 広田 光一; 雨宮 智浩; 北崎 充晃
日本VR学会第21回大会予稿集, 11A-06, 14 Sep. 2016
Symposium, Japanese - 力覚的対話操作が可能なレオロジー物体の粒子ベース大変形シミュレーション
山内 博貴; 田川 和義; 広田 光一; 田中 弘美
日本VR学会第21回大会予稿集, 21st, 14A-01, 14 Sep. 2016
Symposium, Japanese - 手全体で3D物体に触れるための多点力覚レンダリング
山崎 朱華; 広田 光一; 藤本 雄一郎; 藤田 欣也
日本VR学会第21回大会予稿集, 14A-04, 14 Sep. 2016
Symposium, Japanese - 力覚提示システムを用いた触認識に関する評価
藤岡 駿介; 広田 光一; 野嶋 琢也; 赤羽 克仁; 佐藤 誠
日本VR学会第21回大会予稿集, 32A-03, 14 Sep. 2016
Symposium, Japanese - 口唇触覚ディスプレイ
筒井 悠平; 広田 光一; 野嶋 琢也
日本VR学会第21回大会予稿集, 34A-02, 14 Sep. 2016
Symposium, Japanese - 身体と超臨場感
池井 寧; 山田 清貴; 今尾 祥吾; 広田 光一; 雨宮 智浩; 北崎 充晃
日本VR学会第21回大会予稿集, 33F-01, 14 Sep. 2016
Symposium, Japanese - 加速度センサーを用いた歩行モーションの計測に関する研究
楊 暢; 広田光一; 野嶋琢也; 北崎充晃; 池井 寧
日本VR学会研究報告, VRUR1, 20, 30 Jun. 2016
Symposium, Japanese - 足裏触覚提示による位置認識精度の評価
日岐桂吾; 岡野哲大; 広田光一; 野嶋琢也; 北崎充晃; 池井寧
日本VR学会研究報告, VRUR1, 23, 30 Jun. 2016
Symposium, Japanese - 歩行動作における身体感覚と視覚情報の不一致による違和感の評価
長野瑞生; 広田光一; 野嶋琢也; 北崎充晃; 池井寧
日本VR学会研究報告, VRUR1, 27, 30 Jun. 2016
Symposium, Japanese - 歩行を模擬した足底振動刺激による身体近傍空間の拡張
雨宮 智浩; 池井 寧; 広田 光一; 北崎 充晃
日本VR学会論文誌, 日本VR学会, 21, 4, 627-633, 27 Jun. 2016, Peer-reviwed,The representation of the peripersonal space is remapped by body action such as integrating tactile stimuli from the body's surface with multisensory stimuli presented within a limited distance from the body. Previous study showed that boundaries of the peipersonal space extend while walking with listening to a looming sound, but it is unclear whether the boundaries change when a sensation of walking is induced with no physical body motion. Here, we examine the change using a technique to induce a sensation of pseudo-walking by presenting vibrotactile stimuli of recorded footsteps sound at the feet soles. Experiments were performed to compare the reaction times to detect a vibrotactile stimulus on the chest with listening to a looming sound toward the body, taken as a proxy of the peripersonal space boundary. Experimental evaluations showed that the peripersonal space seems to expand when a sensation of pseudo-walking was clearly induced.
Scientific journal, Japanese - 磁気的干渉の少ない多指力覚提示装置の提案
内山 貴雄; 赤羽 克仁; 佐藤 誠; 広田 光一
日本VR学会研究報告, HDC17, No.7, 18 Mar. 2016
Symposium, Japanese - 3D物体に対する手への多点力覚提示アルゴリズム
山崎 朱華; 広田 光一; 藤本 雄一郎; 藤田 欣也
日本VR学会研究報告, HDC17, No.8, 18 Mar. 2016
Symposium, Japanese - Haptic Feedback for Foot Sole Using Pneumatic Pressure Device
Tetsuhiro Okano; Koichi Hirota; Takuya Nojima; Michiteru Kitazaki; Yasushi Ikei
Proc. ASIAGRAPH2016, No.1, 05 Mar. 2016
International conference proceedings, English - A Study on The Effect of Virtual Body in A Vicarious Walk Experience
Hideto Hiranuma; Kento Tashiro; Kohei Komase; Yasushi Ikei; Koichi Hirota; Michiteru Kitazaki
Proc. ASIAGRAPH2016, No.4, 05 Mar. 2016
International conference proceedings, English - Perceptual Analysis of Walking Re-experience using 2ch Vibrations on Heels and Walker's Viewing Motion Images
Michiteru Kitazaki; Katsuya Yoshiho; Yasushi Ikei; Koichi Hirota
Proc. ASIAGRAPH2016, No.9, 05 Mar. 2016
International conference proceedings, English - Generation Effect of The Walking Sensation by Airflow Displays
Masato Kurosawa; Ken Itoh; Yasushi Ikei; Koichi Hirota; Michiteru Kitazaki
Proc. ASIAGRAPH2016, No.15, 05 Mar. 2016
International conference proceedings, English - Synchronized Multisensory Presentation for Alleviation of The VR Sickness
Kento Tashiro; Yasushi Ikei; Koichi Hirota; Michiteru Kitazaki
Proc. ASIAGRAPH2016, No.16, 05 Mar. 2016
International conference proceedings, English - Five senses theater: A multisensory display for the bodily ultra-reality
Yasushi Ikei; Koichi Hirota; Tomohiro Amemiya; Michiteru Kitazaki
Emotional Engineering Volume 4, Springer International Publishing, 145-164, 01 Jan. 2016, Peer-reviwed
In book, English - Vestibulohaptic passive stimulation for a walking sensation
Yasushi Ikei; Shunki Kato; Kohei Komase; Shogo Imao; Sho Sakurai; Tomohiro Amemiya; Michiteru Kitazaki; Koichi Hirota
2016 IEEE VIRTUAL REALITY CONFERENCE (VR), 185-186, 2016, Peer-reviwed
International conference proceedings, English - Perceived topographic surface modulated by pitch rotation of motorized motion chair
Amemiya Tomohiro; Hirota Koichi; Ikei Yasushi
Transactions of the Virtual Reality Society of Japan, 特定非営利活動法人 日本バーチャルリアリティ学会, 21, 2, 359-362, 2016, Peer-reviwed
Japanese - Rhythmic Vibrations to Heels and Forefeet to Produce Virtual Walking
Ryota Kondo; Keisuke Goto; Katsuya Yoshiho; Yasushi Ikei; Koichi Hirota; Michiteru Kitazaki
2016 IEEE SYMPOSIUM ON 3D USER INTERFACES (3DUI), 253-254, 2016, Peer-reviwed
International conference proceedings, English - Interaction with Virtual Object using Deformable Hand
Koichi Hirota; Kazuyoshi Tagawa
2016 IEEE VIRTUAL REALITY CONFERENCE (VR), 49-56, 2016, Peer-reviwed
International conference proceedings, English - High-Resolution Tactile Display for Lips
Yuhei Tsutsui; Koichi Hirota; Takuya Nojima; Yasushi Ikei
Human Interface and the Management of Information: Applications and Services, Pt II, 9735, 357-366, 2016, Peer-reviwed
International conference proceedings, English - Topographic Surface Perception Modulated by Pitch Rotation of Motion Chair
Tomohiro Amemiya; Koichi Hirota; Yasushi Ikei
Human Interface and the Management of Information: Information, Design and Interaction, Pt I, 9734, 483-490, 2016, Peer-reviwed
International conference proceedings, English - Minimal Virtual Reality System for Virtual Walking in a Real Scene
Michiteru Kitazaki; Koichi Hirota; Yasushi Ikei
Human Interface and the Management of Information: Information, Design and Interaction, Pt I, 9734, 501-510, 2016, Peer-reviwed
International conference proceedings, English - 空気圧駆動型デバイスを用いた足裏への触覚提示
岡野 哲大; 広田 光一; 野嶋 琢也
日本VR学会研究報告, HDC16, No.11, 25 Nov. 2015
Symposium, Japanese - 圧電バイモルフを用いた口唇のための高解像度触覚ディスプレイ
筒井 悠平; 広田 光一; 野嶋 琢也
日本VR学会研究報告, HDC16, No.12, 25 Nov. 2015
Symposium, Japanese - 計測に基づく歩行感覚提示に関する研究
市原 紘平; 広田 光一; 池井 寧; 北崎 充晃
日本VR学会第20回大会予稿集, 31A-1, 09 Sep. 2015
Symposium, Japanese - 変形可能な手モデルによる把持操作
広田 光一; 田川 和義
日本VR学会第20回大会予稿集, 20th, OS03, 09 Sep. 2015
Symposium, Japanese - タッチパネル上での反復動作におけるPseudo-haptics
宇治土公; 雄介; 伴 祐樹; 鳴海 拓志; 谷川 智洋; 広田 光一; 廣瀬 通孝
日本VR学会第20回大会予稿集, 20th, 32A-1, 09 Sep. 2015
Symposium, Japanese - バーチャルリアリティの新しい作業仮説
池井 寧; 北崎 充晃; 櫻井 翔; 広田 光一; 雨宮 智浩; 加藤 隼輝; 伊藤 健
日本VR学会第20回大会予稿集, 33E-1, 09 Sep. 2015
Symposium, Japanese - Experience Simulator for the Digital Museum
Ikei, Y.; Shimabukuro, S.; Kato, S.; Komase, K.; Hirota, K.; Amemiya, T.; Kitazaki, M.
LNCS (Lecture Note in Computer Science), 9173, 336-446, Aug. 2015, Peer-reviwed, True
International conference proceedings, English - 慣性力提示装置を用いたVR モデル推定に関する研究
山本剛史; 広田光一
日本VR学会研究報告, 20, VRUR-1, No.1, 06 Jan. 2015
Symposium, Japanese - ER クラッチを用いたトルクコンバータに関する研究
桐山和也; 広田光一
日本VR学会研究報告, 20, VRUR-1, No.2, 06 Jan. 2015
Symposium, Japanese - カーソル速度変化によるPseudo-haptics の生起場所
宇治土公雄介; 広田光一
日本VR学会研究報告, 20, VRUR-1, No.3, 06 Jan. 2015
Symposium, Japanese - 触力覚対側提示に関する検討
黒木文弥; 広田光一; 池井 寧
日本VR学会研究報告, 20, VRUR-1, No.4, 06 Jan. 2015
Symposium, Japanese - Third Person's Footsteps Enhanced Moving Sensation of Seated Person
Yujiro Okuya; Yasushi Ikei; Tomohiro Amemiya; Koichi Hirota
2015 IEEE VIRTUAL REALITY CONFERENCE (VR), 251-252, 2015, Peer-reviwed
International conference proceedings, English - Characteristics of Virtual Walking Sensation Created by a 3-dof Motion Seat
Seiya Shimabukuro; Shunki Kato; Yasushi Ikei; Koichi Hirota; Tomohiro Amemiya; Michiteru Kitazaki
2015 IEEE VIRTUAL REALITY CONFERENCE (VR), 279-280, 2015, Peer-reviwed
International conference proceedings, English - Walking recording and experience system by Visual Psychophysics Lab
Atsuhiro Fujita; Shohei Ueda; Junki Nozawa; Koichi Hirota; Yasushi Ikei; Michiteru Kitazaki
2015 IEEE VIRTUAL REALITY CONFERENCE (VR), 333-334, 2015, Peer-reviwed
International conference proceedings, English - Five Senses Theatre Project: Sharing Experiences through Bodily Ultra-Reality
Y. Ikei; S. Shimabukuro; S. Kato; K. Komase; Y. Okuya; Koichi Hirota; Michiteru Kitazaki; Tomohiro Amemiya
2015 IEEE VIRTUAL REALITY CONFERENCE (VR), 195-196, 2015, Peer-reviwed
International conference proceedings, English - Object manipulation by deformable hand
Koichi Hirota; Yusuke Ujitoko; Kazuya Kiriyama; Kazuyoshi Tagawa
Lecture Notes in Electrical Engineering, Springer Verlag, 277, 145-148, 2015
International conference proceedings, English - The scaling of the Haptic perception on the fingertip using an interface of anthropomorphic finger motions
Yusuke Ujitoko; Koichi Hirota
Lecture Notes in Electrical Engineering, Springer Verlag, 277, 3-5, 2015
International conference proceedings, English - Impact of Illusory Resistance on Finger Walking Behavior
Yusuke Ujitoko; Koichi Hirota
2015 IEEE VIRTUAL REALITY CONFERENCE (VR), 301-302, 2015, Peer-reviwed
International conference proceedings, English - Recognition of Weight through Shaking Interaction
Takeshi Yamamoto; Koichi Hirota
2015 IEEE WORLD HAPTICS CONFERENCE (WHC), 451-456, 2015, Peer-reviwed
International conference proceedings, English - Presentation method of walking sensation based on walking behavior measurement with inertial sensors and pressure sensors
Kohei Ichihara; Koichi Hirota; Yasushi Ikei; Michiteru Kitazaki
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Verlag, 9172, 374-385, 2015, Peer-reviwed
International conference proceedings, English - Application of the locomotion interface using anthropomorphic finger motion
Yusuke Ujitoko; Koichi Hirota
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Verlag, 9173, 666-674, 2015, Peer-reviwed
International conference proceedings, English - 指の擬人的な動作を利用するロコモーションインタフェースにおける触覚の解釈
宇治土公雄介; 広田光一
日本VR学会第19回大会予稿集, [日本バーチャルリアリティ学会], 19, 34B-2-621, 17 Sep. 2014
Symposium, Japanese - 振るデバイスを用いた内容物の推定
山本剛史; 広田光一
日本VR学会第19回大会予稿集, 12A-1, 17 Sep. 2014
Symposium, Japanese - VR環境における操作性向上のための手モデル
桐山和也; 広田光一; 田川和義; 宇治土公雄介
日本VR学会第19回大会予稿集, 19th, 21A-1, 17 Sep. 2014
Symposium, Japanese - VR環境における指関節角度変化に関する検討
黒木文弥; 広田光一
日本VR学会第19回大会予稿集, 22C-6, 17 Sep. 2014
Symposium, Japanese - 指先触覚の知覚のスケーリングに関する検討
宇治土公雄介; 広田光一
信学会, MVE2014-29, 114(MVE2014 13-31), 111-112, 01 Jul. 2014
Symposium, Japanese - Device for Estimation of Weight and Material of Contents by Shaking
Takeshi Yamamoto; Koichi Hirota
Proc. EuroHaptics 2014, LNCS 8618,, 150-157, 24 Jun. 2014, Peer-reviwed
International conference proceedings, English - Interindividual Variation of Sensitivity to Frequency Modulation: Its Relation with Click-Evoked and Distortion Product Otoacoustic Emissions
Sho Otsuka; Shigeto Furukawa; Shimpei Yamagishi; Koich Hirota; Makio Kashino
JARO-JOURNAL OF THE ASSOCIATION FOR RESEARCH IN OTOLARYNGOLOGY, 15, 2, 175-186, Apr. 2014, Peer-reviwed
Scientific journal, English - 実時間の柔変形可能な手モデルに関する研究
宇治土公雄介; 広田光一; 田川和義
日本VR学会研究報告, HDC12, 501(HIP2013 78-105), No.20, 01 Mar. 2014
Symposium, Japanese - 把持操作における触覚対側提示の効果に関する検討
黒木文弥; 広田光一
日本VR学会研究報告, HDC12, No.23, 01 Mar. 2014
Symposium, Japanese - 振るデバイスによる内容物の重さと材質の提示
山本剛史; 広田光一
日本VR学会研究報告, HDC12, No.26, 01 Mar. 2014
Symposium, Japanese - Presentation of Spatially Localized Vibration by Means of Phantom Sensation
Kosei Nishi; Koichi Hirota
Proc. Haptics 2014, 83-88, 23 Feb. 2014, Peer-reviwed
International conference proceedings, English - 把持捜査のための柔軟な手モデルの構築
宇治土公雄介; 広田光一
日本VR学会研究報告, VRUR1, 13-14, 24 Jan. 2014
Symposium, Japanese - 慣性力を用いたハプティクスデバイスに関する研究
山本剛史; 広田光一
日本VR学会研究報告, VRUR1, 15-16, 24 Jan. 2014
Symposium, Japanese - 空間的ファントムセンセーションを利用した情報提示の検証
西晃生; 広田光一
日本VR学会研究報告, VRUR1, 17-20, 24 Jan. 2014
Symposium, Japanese - Device for Estimation of Weight and Material of Contents by Shaking
Takeshi Yamamoto; Koichi Hirota
HAPTICS: NEUROSCIENCE, DEVICES, MODELING, AND APPLICATIONS, PT II, 8619, 403-410, 2014, Peer-reviwed
International conference proceedings, English - Rendering of Virtual Walking Sensation by a Passive Body Motion
Yasushi Ikei; Seiya Shimabukuro; Shunki Kato; Yujiro Okuya; Koji Abe; Koichi Hirota; Tomohiro Amemiya
HAPTICS: NEUROSCIENCE, DEVICES, MODELING, AND APPLICATIONS, 8618, 150-157, 2014, Peer-reviwed
International conference proceedings, English - To Relive a Valuable Experience of the World at the Digital Museum
Yasushi Ikei; Yujiro Okuya; Seiya Shimabukuro; Koji Abe; Tomohiro Amemiya; Koichi Hirota
HUMAN INTERFACE AND THE MANAGEMENT OF INFORMATION: INFORMATION AND KNOWLEDGE IN APPLICATIONS AND SERVICES, PT II, 8522, 501-510, 2014, Peer-reviwed
International conference proceedings, English - 五感シアターにおける空気メディア
広田光一; 雨宮智浩; 池井寧
HCGシンポジウム2013予稿集, 134-137, 18 Dec. 2013
Symposium, Japanese - VR環境での巧緻操作のための計算手法
黒木文弥; 広田光一
日本VR学会研究報告, HDC11-2, 08 Nov. 2013
Symposium, Japanese - バーチャルリアリティ環境における物体操作
広田 光一
東京大学大学院情報学環紀要, The University of Tokyo, 85, 195-198, 10 Oct. 2013
Symposium, Japanese - 周波数変調と振幅変調の処理能力の個人差: 耳音響放射との関連
大塚翔; 山岸慎平; 古川茂人; 広田光一; 柏野牧夫
日本音響学会 2013秋季研究発表会講演論文集, 487-490, 25 Sep. 2013
Symposium, Japanese - 座面上の触仮現運動が及ぼす移動感覚の速度知覚変化
雨宮智浩; 広田光一; 池井寧
日本VR学会第18回大会予稿集, [日本バーチャルリアリティ学会], 18, 11B-1-20, 17 Sep. 2013
Symposium, Japanese - 五感シアターのための匂いの提示と計測手法
広田光一; 伊藤洋子; 雨宮智浩; 池井寧
日本VR学会第18回大会予稿集, 1B-2, 17 Sep. 2013
Symposium, Japanese - つり革デバイスによる電車の揺れの提示
広田光一; 佐々木昂; 雨宮 智浩; 池井寧
日本VR学会第18回大会予稿集, 11B-3, 17 Sep. 2013
Symposium, Japanese - ファントムセンセーションを利用した空間的情報提示の検証
西晃生; 広田光一
日本VR学会第18回大会予稿集, 33E-2, 17 Sep. 2013
Symposium, Japanese - VR環境における巧緻な操作に関する研究
黒木文弥; 広田光一
日本VR学会第18回大会予稿集, 33E-3, 17 Sep. 2013
Symposium, Japanese - 把持操作のための柔軟な手モデルの構築
宇治土公雄介; 広田光一; 田川和義
日本VR学会第18回大会予稿集, 18th, 34E-2, 17 Sep. 2013
Symposium, Japanese - 周波数変調弁別の個人差: 歪成分耳音響放射とクリック誘発耳音響放射を用いた検討
大塚翔; 山岸慎平; 広田光一; 古川茂人; 柏野牧夫
日本聴覚医学会 ERA・OAE 研究会抄録集, 4, 07 Jul. 2013
Symposium, Japanese - 計測にもとづくインパルス応答変形モデルの構築
広田 光一; 田川 和義
日本VR学会論文誌, 日本VR学会, 18, 2, 171-180, 30 Jun. 2013, Peer-reviwed
Scientific journal, Japanese - 座面上の触仮現運動が及ぼす視覚誘導性自己運動感覚の速度知覚変化
雨宮智浩; 広田光一; 池井寧
日本VR学会論文誌, 日本VR学会, 18, 2, 121-130, 30 Jun. 2013, Peer-reviwed, We conducted a user study to clarify whether a tactile flow created by a matrix of vibrators in a seat pan simultaneously presented with an optical flow in peripheral vision enhances the perceived forward velocity of self-motion. A brief tactile motion stimulus consisted of four successive rows of vibration, and the inter-stimulus onset between the tactile rows was varied to change the velocity of the tactile motion. The experimental results show that the forward velocity of self-motion is significantly overestimated for rapid tactile flows and underestimated for slow, compared with only optical flow or non-motion vibrotactile stimulation conditions. Furthermore, we examined a perceptual change in the forward velocity by the tactile flow on the seat pan applied in a car-racing computer game.
Scientific journal, Japanese - 周波数変調弁別と聴覚末梢処理特性との関係: 耳音響放射を用いた検討
大塚翔; 山岸慎平; 広田光一; 古川茂人; 柏野牧夫
研究報告音楽情報科学, 2013-MUS-99, 55, 1-4, 11 May 2013
Symposium, Japanese - Auditory Feedback for Object Manipulation
Koichi Hirota; Minato Mizutori; Xiaoshu Zhou
Proc. ASIAGRAPH 2013, 62-66, 24 Apr. 2013
International conference proceedings, English - 詳細時間構造の処理能力: 歪成分耳音響放射およびクリック誘発耳音響放射との関連
大塚翔; 山岸慎平; 古川茂人; 広田光一; 柏野牧夫
日本音響学会 2013春季研究発表会講演論文集, 581-582, 13 Mar. 2013
Symposium, Japanese - 遠隔コミュニケーションにおける呼吸の伝達効果に関する研究
小池桃太郎; 広田光一
ヒューマンインタフェース学会論文誌, ヒューマンインタフェース学会, 15, 1, 107-110, Feb. 2013, Peer-reviwed
Scientific journal, Japanese - Perceived Forward Velocity Increases with Tactile Flow on Seat Pan
Tomohiro Amemiya; Koichi Hirota; Yasushi Ikei
2013 IEEE VIRTUAL REALITY CONFERENCE (VR), 141-+, 2013, Peer-reviwed
International conference proceedings, English - Poster: Auditory feedback of contact state during object manipulation
Xiaoshu Zhou; Koichi Hirota
IEEE Symposium on 3D User Interface 2013, 3DUI 2013 - Proceedings, 185-186, 2013, Peer-reviwed
International conference proceedings, English - Tactile Flow on Seat Pan Modulates Perceived Forward Velocity
Tomohiro Amemiya; Koichi Hirota; Yasushi Ikei
2013 IEEE SYMPOSIUM ON 3D USER INTERFACES (3DUI), 71-77, 2013, Peer-reviwed
International conference proceedings, English - Generation of Directional Wind by Colliding Airflows
Koichi Hirota; Yoko Ito; Tomohiro Amemiya; Yasushi Ikei
2013 WORLD HAPTICS CONFERENCE (WHC), 509-514, 2013, Peer-reviwed
International conference proceedings, English - Tactile apparent motion presented from seat pan facilitates racing experience
Tomohiro Amemiya; Koichi Hirota; Yasushi Ikei
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8021, 1, 121-128, 2013, Peer-reviwed
International conference proceedings, English - Train ride simulation using assist strap device
Takashi Sasaki; Koichi Hirota; Tomohiro Amemiya; Yasushi Ikei
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8017, 2, 189-197, 2013, Peer-reviwed
International conference proceedings, English - Presentation of odor in multi-sensory theater
Koichi Hirota; Yoko Ito; Tomohiro Amemiya; Yasushi Ikei
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8022, 2, 372-379, 2013, Peer-reviwed
International conference proceedings, English - Virtual experience system for a digital Museum
Yasushi Ikei; Koji Abe; Yukinori Masuda; Yujiro Okuya; Tomohiro Amemiya; Koichi Hirota
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8018, 3, 203-209, 2013, Peer-reviwed
International conference proceedings, English - 仮想物体操作のための聴覚フィードバック
周 小舒; 広田光一
日本VR学会研究報告, No.4, 28 Dec. 2012
Symposium, Japanese - 複数の送風機による風向提示
広田光一; 伊藤洋子; 池井 寧; 雨宮智浩
日本VR学会研究報告, No.5, 28 Dec. 2012
Symposium, Japanese - 素早い動作を可能としたVR環境の構築及び検証
水鳥 未那人; 西 晃生; 広田 光一; 池井 寧
日本VR学会論文誌, 日本VR学会, 17, 4, 429-438, Dec. 2012, Peer-reviwed, An approach to realize skillful object manipulation in virtual environment was investigated. Environment for virtual juggling was implemented; visual display that has large vertical field of view was implemented using two-screen projection system; models of both hand were updated using glove-type sensors and magnetic trackers; simulation algorithm was tuned to support interaction with fast-moving objects; auditory feedback contact of as an alternative to haptic sensation was also introduced. Experiments to evaluate performance of juggling were carried out. The result suggests that the environment allow for juggling task to an extent. Also, it was proved that auditory feedback of contact is useful in the task.
Scientific journal, Japanese - 「なでる」行為の持つメッセージの触覚的伝達可能性の検討
小池桃太郎; 広田光一
日本VR学会研究報告, HDC9-12, 15 Nov. 2012
Symposium, Japanese - 中耳・内耳機能と詳細時間構造処理能力との関係
大塚翔; 山岸慎平; 広田光一; 古川茂人; 柏野牧夫
日本音響学会 2013秋季研究発表会講演論文集, 477-480, 19 Sep. 2012
Symposium, Japanese - 風の方向提示に関する検討
広田光一; 伊藤洋子; 池井寧; 雨宮智浩
日本VR学会第17回大会予稿集, 日本バーチャルリアリティ学会, 17, 12C-6-126, 12 Sep. 2012
Symposium, Japanese - VR環境において巧緻な動作を可能とするプラットフォームの構築
西晃生; 水鳥未那人; 広田光一; 池井寧
日本VR学会第17回大会予稿集, 31B-5, 12 Sep. 2012
Symposium, Japanese - 超臨場感の探求のための五感追体験メディア
池井寧; 阿部浩二; 広田光一; 雨宮智浩
日本VR学会第17回大会予稿集, 33A-2, 12 Sep. 2012
Symposium, Japanese - 視触覚間相互作用による移動速度感覚の変化
雨宮智浩; 広田光一; 池井寧
日本VR学会第17回大会予稿集, 33A-3, 12 Sep. 2012
Symposium, Japanese - つり革型デバイスによる運動感覚の提示
広田光一; 佐々木昂; 雨宮智浩; 池井寧
日本VR学会第17回大会予稿集, 33A-4, 12 Sep. 2012
Symposium, Japanese - 呼吸を伝達するコミュニケーションの効果と伝達方法の検討
小池桃太郎; 広田光一
日本VR学会第17回大会予稿集, 34E-4, 12 Sep. 2012
Symposium, Japanese - 聴覚末梢処理特性と時間微細構造処理能力の相関
大塚翔; 山岸慎平; 広田光一; 柏野牧夫
日本聴覚医学会 ERA・OAE 研究会抄録集, 6, 08 Jul. 2012
Symposium, Japanese - 耳音響放射と時間微細構造処理能力の相関
大塚 翔; 広田 光一; 柏野 牧夫
信学技報, 112, 81, 75-79, 14 Jun. 2012
Symposium, Japanese - Switching Torque Converter: Concept and Preliminary Implementation
Koichi HIROTA; Yasushi IKEI
J. System Design and Dynamics, JSME, 6, 4, 386-400, Jun. 2012, Peer-reviwed, It is preferable to refrain from switching the torque in mechanical systems because the abrupt change tends to cause vibration and noise. However, such vibration can be beneficial if it is used to store mechanical energy. Moreover, torque switching operations at higher frequencies are becoming possible because of the recent advances in clutch devices. This paper describes a novel torque conversion mechanism based on torque switching operations. The fundamental principle of the mechanism is the reciprocal translation between the work to and from axles and the rotational energy of a flywheel. Clutches are used to intermittently connect or disconnect the axles with the flywheel; the output torque is controlled by changing the time ratio of the connection. By performing switching operations at a higher frequency, almost continuous torque conversion can be realized. A prototype was created using electrorheological fluid clutches, and it showed the potential for torque conversion. The performance of the prototype was also analyzed by numerical simulation; this showed that the prototype worked in accordance with the principle. Moreover, the potential capability of the principle was investigated using a numerical model and the results suggest that by improving the mechanical design, a considerable improvement in performance is possible.
Scientific journal, English - TBEOAEの二音抑圧の時間依存性
大塚 翔; 広田 光一; 柏野 牧夫
日本音響学会 聴覚研究会資, 日本音響学会聴覚研究委員会, 42, 3, 269-273, 25 May 2012
Symposium, Japanese - 計測にもとづく弾性変形モデルの構築
広田 光一; 田川 和義
日本VR学会研究報告, HDC8-2, 13 Mar. 2012
Symposium, Japanese - 耳音響放射の入出力関数と時間微細構造処理能力の相関
大塚翔; 広田光一; 柏野牧夫
日本音響学会研究発表会講演論文集, ROMBUNNO.3-10-2, 13 Mar. 2012
Symposium, Japanese - Acquisition of elastically deformable object model based on measurement
Koichi Hirota; Kazuyoshi Tagawa
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 7282, 1, 205-217, 2012, Peer-reviwed
International conference proceedings, English - Shaking a box to estimate the property of content
Yasuhiro Tanaka; Koichi Hirota
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 7282, 1, 564-576, 2012, Peer-reviwed
International conference proceedings, English - A multisensory VR system exploring the ultra-reality
Yasushi Ikei; Koji Abe; Koichi Hirota; Tomohiro Amemiya
Proceedings of the 2012 18th International Conference on Virtual Systems and Multimedia, VSMM 2012: Virtual Systems in the Information Society, 71-78, 2012, Peer-reviwed
International conference proceedings, English - Skillful manipulation of virtual objects: Implementation of juggling in a virtual environment
Minato Mizutori; Koichi Hirota; Yasushi Ikei
Proceedings of the 2012 18th International Conference on Virtual Systems and Multimedia, VSMM 2012: Virtual Systems in the Information Society, 79-86, 2012, Peer-reviwed
International conference proceedings, English - 五感シアターを使った空気伝達コミュニケョンデバイスの開発
小池桃太郎; 広田光一
日本VR学会研究報告 WUVR, 23-24, 06 Dec. 2011
Symposium, Japanese - モーションチェアの挙動と接触面積の変化による圧力感覚提示
雨宮 智浩; 広田 光一; 池井 寧
日本VR学会第16回大会予稿集, 12B-4, 20 Sep. 2011
Symposium, Japanese - 五感コンテンツ制作環境の評価
海老澤清一郎; 広田光一; 池井 寧; 雨宮智浩
HI学会研究報告集, 13, 4, 27-30, 28 Jun. 2011
Symposium, Japanese - 仮想空間におけるスキルフルな物体操作の研究～評価システムの構築及び予備実験
水鳥未那人; 広田光一
HI学会研究報告集, 13, 4, 61-66, 28 Jun. 2011
Symposium, Japanese - A theater for viewing and editing multi-sensory content
Koichi Hirota; Seichiro Ebisawa; Tomohiro Amemiya; Yasushi Ikei
Proc. ISVRI 2011, 237-242, 19 Mar. 2011, Peer-reviwed
International conference proceedings, English - 3 次元空間における皮膚感覚提示の特性評価
西村加南子; 池井寧; 牧野良; 広田光一
日本機械学会論文集（C 編）, 日本機械学会, 77, 775, 913-922, Mar. 2011, Peer-reviwed, This paper describes a basic research on the method for presenting haptic texture sensation in a three dimensional space. A vibratory pin-array display for tactile stimulation was attached to the Phantom force display to provide surface information of an object in addition to its shape to the user. The haptic presentation of textures on the surface of an icosahedron was evaluated by three-stage discrimination experiments. A basic discrimination of difference between visual and haptic renderings was almost perfectly answered while more intricate textures lowered the correct answer ratio to around seventy percent. The discrimination of stripe, mesh and melon-rind textures was not very easy even with a visual guidance since in part strictly accurate motion of a finger to pick up the salient feature of the textures was not possible. Without visual guidance the haptic exploration produced over fifty percent correct answer to textures with very similar features, while the chance rate was twenty-five percent. These results, although limited, demonstrated that the very small difference in texture features was properly presented to the users. The authors consider that tactile presentation of textures increased the sensation of reality greatly as compared to the force sensation via the stylus of a force display conventionally used in the field.
Scientific journal, Japanese - コンテンツ特性がステレオバランス感覚におよぼす影響についての音量調整行動を指標とする評価
福島亜理子; 仁科エミ; 大橋力; 茅原拓朗; 広田光一; 廣瀬通孝
ヒューマンインタフェース学会論文誌, ヒューマンインタフェース学会, 13, 1, 91-98, Feb. 2011, Peer-reviwed
Scientific journal, Japanese - A theater for viewing and editing multi-sensory content
Koichi Hirota; Seichiro Ebisawa; Tomohiro Amemiya; Yasushi Ikei
ISVRI 2011 - IEEE International Symposium on Virtual Reality Innovations 2011, Proceedings, 239-244, 2011, Peer-reviwed
International conference proceedings, English - FiveStar: Ultra-realistic space experience system
Masahiro Urano; Yasushi Ikei; Koichi Hirota; Tomohiro Amemiya
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 6774, 2, 407-414, 2011, Peer-reviwed
International conference proceedings, English - Concave-convex surface perception by visuo-vestibular stimuli for five-senses theater
Tomohiro Amemiya; Koichi Hirota; Yasushi Ikei
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 6773, 1, 225-233, 2011, Peer-reviwed
International conference proceedings, English - A system for creating the content for a multi-sensory theater
Koichi Hirota; Seichiro Ebisawa; Tomohiro Amemiya; Yasushi Ikei
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 6774, 2, 151-157, 2011, Peer-reviwed
International conference proceedings, English - Spatial Voice Menu and Head Gesture Interaction System for a Wearable Computer
Taiki Saito; Yasushi Ikei; Koichi Hirota; Michitaka Hirose
Proc. ICAT 2010, 71-76, 01 Dec. 2010, Peer-reviwed
International conference proceedings, English - Sound and Vibration Integrated Cues for Presenting a Virtual Motion
Taiki Saito; Yasushi Ikei; Tomohiro Amemiya; Koichi Hirota
Proc. ICAT 2010, 216-217, 01 Dec. 2010, Peer-reviwed
International conference proceedings, English - エネルギー蓄積型力覚提示機構の基礎的検討
Koichi Hirota
日本VR学会論文誌, 日本VR学会, 15, 4, 623-632, Dec. 2010, Peer-reviwed, This paper presents a concept of energy-accumulative force display. The concept was conceived from the notion that interaction with passive objects does not require power supply hence it is theoretically possible to realize hap tic interaction with passive virtual objects without external power supply. Approaches to implement energy-accumulative system were discussed, and an approach based on torque conversion mechanism was employed. A prototype device was implemented and the simulation that confirmed behavior was done. The simulation and the experiment were compared in the research. As a result, energy accumulation was able to be confirmed on the limited condition. Result of experiment has provided clues to further investigation.
Scientific journal, Japanese - 振ってみるデバイス：対象指向慣性力提示装置の提案と試作
Koichi Hirota
日本VR学会論文誌, 日本VR学会, 15, 4, 643-651, Dec. 2010, Peer-reviwed, By shaking a box with content, we can approximately estimate characteristic of the content inside through haptic sensation. Our study is focusing on implementation of haptic device that virtually realizes such interaction between human and a box. This paper discusses conceptual ideas of our approach, design of device and its control system, and implementation of a prototype system.
Scientific journal, Japanese - FiveStar: Development of the Five Senses Theater for Ultrareality Multiple-modality Display for Ultra realistic Space Experience
Taira Yoshioka; Kanako Nishimura; Wataru Yamamoto; Taiki Saito; Yasushi Ikei; Koichi Hirota; Tomohiro Amemiya
Proc. ASIAGRAPH 2010, 13-18, 14 Oct. 2010, Peer-reviwed
International conference proceedings, English - Development of Preliminary System for Presenting Visuo-vestibular Sensations for Five Senses Theater
Tomohiro Amemiya; Koichi Hirota; Yasushi Ikei
Proc. ASIAGRAPH 2010, 19-23, 14 Oct. 2010, Peer-reviwed
International conference proceedings, English - Olfactory Display for Multi-sensory Theater
Koichi Hirota; Yasushi Ikei; Tomohiro Amemiya
Proc. ASIAGRAPH 2010, 24-28, 14 Oct. 2010, Peer-reviwed
International conference proceedings, English - FiveStar: Ultra-ordinary experience through five Senses media
Yasushi Ikei; Kanako Nishimura; Taira Yoshioka; Wataru Yamamoto; Taiki Saito; Masahiro Urano; Koichi Hirota; Tomohiro Amemiya
Proc. ASIAGRAPH 2010, 123, 14 Oct. 2010
International conference proceedings, English - 五感シアターのための嗅覚提示装置の試作
広田光一; 池井寧; 雨宮智浩
日本VR学会第15回大会予稿集, 3C3-3, 15 Sep. 2010
Symposium, Japanese - 五感シアターにおける 視覚-前庭感覚提示システムの予備検討
雨宮智浩; 広田光一; 池井寧
日本VR学会第15回大会予稿集, 3C3-4, 15 Sep. 2010
Symposium, Japanese - 五感シアターにおける視覚 —前庭感覚提示システムの開発—
雨宮智浩; 広田光一; 池井寧
日本VR学会研究報告 WUVR, 15, 1, 25-26, 30 Jun. 2010
Symposium, Japanese - 五感シアター用嗅覚提示装置のための空気流量制御手法
広田光一; 池井寧; 雨宮智浩
日本VR学会研究報告 WUVR, 15, 1, 27-30, 30 Jun. 2010
Symposium, Japanese - CAGRA: Optimal Parameter Setting and Rendering Method for Occlusion-capable Automultiscopic Three-Dimensional Display
Yusuke Doyama; Atsushi Kodama; Tomohiro Tanikawa; Kazuyoshi Tagawa; Koichi Hirota; Michitaka Hirose
IEEE VIRTUAL REALITY 2010, PROCEEDINGS, 263-+, 2010, Peer-reviwed
International conference proceedings, English - The orikao method: 3D scene reconstruction from Japanese beauty portraits
Yuka Kubo; Hiroyuki Shindo; Koichi Hirota
ACM SIGGRAPH 2010 Posters, SIGGRAPH '10, 30B, 2010, Peer-reviwed
International conference proceedings, English - A data compression method for impulse response deformation model.
Kazuyoshi Tagawa; Koichi Hirota; Michitaka Hirose
World Haptics 2009 - Third Joint EuroHaptics conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, Salt Lake City, UT, USA, 18-20 March 2009, IEEE Computer Society, 428-433, 2009, Peer-reviwed - CAGRA:Occlusion-capable Automultiscopic 3D Display with Spherical Coverage
Yusuke Doyama; Atsushi Kodama; Tomohiro Tanikawa; Kazuyoshi Tagawa; Koichi Hirota; Michitaka Hirose
Artificial Reality and Telexistence 2008, 36-42, Dec. 2008, Peer-reviwed - 全周多視点ディスプレイの開発 (特集 バーチャルリアリティ研究事例)
広田 光一; 田川 和義; 鈴木 康広
映像情報industrial, 産業開発機構, 40, 6, 51-55, Jun. 2008, Invited
Japanese - Surface Contact Interaction with Dynamically Deformable Object Using Impulse-Based Approach.
Kazuyoshi Tagawa; Koichi Hirota; Michitaka Hirose
Haptics: Perception, Devices and Scenarios, 6th International Conference, EuroHaptics 2008, Madrid, Spain, June 10-13, 2008, Proceedings, Springer, 675-680, 2008, Peer-reviwed - Dynamic Deformation Model for Haptic Interaction
TAGAWA Kazuyoshi; HIROTA Koichi; HIROSE Michitaka
The IEICE transactions on information and systems, 一般社団法人電子情報通信学会, 90, 9, 2615-2623, Sep. 2007, Peer-reviwed
Japanese - Menu selection using auditory interface
Koichi Hirota; Yosuke Watanabe; Yasushi Ikei
HUMAN-COMPUTER INTERACTION, PT 3, PROCEEDINGS, 4552, 70-+, 2007, Peer-reviwed
International conference proceedings, English - Head gesture interface for Wearable Computer
Nakao Yusuke; Ikei Yasushi; Hirota Koichi; Hirose Michitaka
TVRSJ, 特定非営利活動法人 日本バーチャルリアリティ学会, 12, 4, 607-614, 2007, This paper describes an input interface for the hands/eyes-free interaction system called vCocktail system that is effective for wearable computers. The vCocktail system presents efficient spatialized voice menus around the user's head, which permits 99.7 percent correct listening to multiplexed voices up to four directions. As an input system to select the voice menu, we propose to use head gestures of two degrees of freedom rotation. Based on the data of subjects' head trajectories, we constructed a robust recognition algorithm. Ninety-eight-percent correct recognition was achieved even under highly noisy body movement by applying our algorithm.
Japanese - A Study on Haptic Interaction and Simulation of Motion and Deformation of Elastic Object.
Kazuyoshi Tagawa; Koichi Hirota; Michitaka Hirose
Human Interface and the Management of Information. Methods, Techniques and Tools in Information Design, Symposium on Human Interface 2007, Held as Part of HCI International 2007, Beijing, China, July 22-27, 2007, Proceedings Part I, Springer, 985-993, 2007, Peer-reviwed - Exhibition of genome contents using virtual reality technology and audience's reaction of the exhibition
西村 邦裕; 広田 光一; 廣瀬 通孝
Bulletin of Japan Museum Management Academy, 日本ミュージアム・マネージメント学会, 10, 43-52, Mar. 2006
Japanese - Virtual Environment for Gene Expression Analysis using Immersive Projection Display : Gene Selection and Gene Grouping
Nishimura Kunihiro; Ishikawa Shumpei; Tsutsumi Shuichi; Aburatani Hiroyuki; Hirota Koichi; Hirose Michitaka
TVRSJ, 特定非営利活動法人 日本バーチャルリアリティ学会, 11, 1, 161-170, 2006, In the field of genome science, researchers analyze gene expression data to clarify gene functions and to find suitable genes for drug development. In the analysis, they cluster genes using gene expression profiles and interpret them biologically using known information. However there are challenges with this approach. They often utilize trial and error method to set the parameters for clustering or extracting genes. At the same time, they have to get related genome information from web sites, thus it is difficult for them to do these tasks concurrently. They have to remember the analysis process and the parameters. In order to address this problem, this paper proposes a visualization method for gene expression analysis. Data from several web sites are integrated into one virtual environment in order to present them as if they were many papers on a desktop. Analysis process and history are displayed to help to remember analysis process. Parameters are also displayed in order to grasp the whole parameters at a glance. This system is implemented in an immersive projection display, CABIN. Based on our evaluation, we observed that by using proposed visualization method, it is easy for genome researchers to understand the analysis process, and they are able to perform the analysis that was not feasible previously.
Japanese - Impulse response deformation model: An approach to haptic interaction with dynamically deformable object
Kazuyoshi Tagawa; Koichi Hirota; Michitaka Hirose
SYMPOSIUM ON HAPTICS INTERFACES FOR VIRTUAL ENVIRONMENT AND TELEOPERATOR SYSTEMS 2006, PROCEEDINGS, 209-215, 2006, Peer-reviwed
International conference proceedings, English - vCocktail: Multiplexed-voice menu presentation method for wearable computers
Yasushi Ikei; Hitoshi Yamazaki; Koichi Hirota; Michitaka Hirose
IEEE VIRTUAL REALITY 2006, PROCEEDINGS, 183-+, 2006, Peer-reviwed
International conference proceedings, English - Wearable olfactory display: Using odor in outdoor environment
Tomoya Yamada; Satoshi Yokoyama; Tomohiro Tanikawa; Koichi Hirota; Michitaka Hirose
IEEE VIRTUAL REALITY 2006, PROCEEDINGS, 199-+, 2006, Peer-reviwed
International conference proceedings, English - Display composed of water drops for filling space with materialized virtual three-dimensional objects
Shin'ichiro Eitoku; Koichi Hirota; Tomohiro Tanikawa; Toshio Iwai; Yasuhiro Suzuki; Michitaka Hirose
IEEE VIRTUAL REALITY 2006, PROCEEDINGS, 159-+, 2006, Peer-reviwed
International conference proceedings, English - Implementation of electromyogram interface in CABIN immersive multiscreen display
Hideaki Touyama; Koichi Hirota; Michitaka Hirose
IEEE VIRTUAL REALITY 2006, PROCEEDINGS, 273-+, 2006, Peer-reviwed
International conference proceedings, English - vCocktail : A wearable-oriented multiplexed voice menu presentation method
IKEI Yasushi; YAMAZAKI Hitoshi; HIROTA Koichi; HIROSE Michitaka
Human interface, ヒュ-マンインタフェ-ス学会, 7, 4, 571-581, 25 Nov. 2005
Japanese - Development and Evaluation of Oboe-like Braille Input Interface for Wearable Computing
AMEMIYA TOMOHIRO; HIROTA KOICHI; HIROSE MICHITAKA
IPSJ journal, 一般社団法人情報処理学会, 46, 7, 1701-1710, Jul. 2005, Peer-reviwed
Japanese - Flexible and efficient scheme for interest management in HLA
Changhoon Park; Koichi Hirota; Michitaka Hirose; Heedong Ko
Lecture Notes in Artificial Intelligence (Subseries of Lecture Notes in Computer Science), Springer Verlag, 3398, 141-149, 2005
International conference proceedings, English - Position tracking using infra-red signals for museum guiding system
Atsushi Hiyama; Jun Yamashita; Hideaki Kuzuoka; Koichi Hirota; Michitaka Hirose
Lecture Notes in Computer Science, Springer Verlag, 3598, 49-61, 2005
International conference proceedings, English - Science Museum Exhibition by a Researcher : Exhibition of Genome Contents and Audience's Reaction of the Exhibition
Nishimura Kunihiro; Hirota Koichi; Hirose Michitaka
TVRSJ, 特定非営利活動法人 日本バーチャルリアリティ学会, 10, 4, 581-590, 2005, The number of science museums that have virtual reality systems is increasing. This paper proposes an exhibition method using immersive projection technology by a researcher in a science museum. The researcher uses virtual reality contents as the exhibition contents and explains the contents to audiences. That is to say, the method enables communication between researchers and audiences. We exhibited contents that are related to genome science three times in the science museum according to our proposal method. We report this exhibitions and results of questionnaires from audiences. This paper also describes about a visualization method of audiences' operation log in a virtual environment. The museum exhibition can get feedback from this visualization results.
Japanese - Ubiquitous Gaming : Museum Guide Contents based on Location Oriented Mobile System
Hiyama Atsushi; Yamashita Jun; Nishioka Teiichi; Kuzuoka Hideaki; Hirota Koichi; Hirose Michitaka
Transactions of the Virtual Reality Society of Japan, THE VIRTUAL REALITY SOCIETY OF JAPAN, 10, 4, 523-532, 2005, This paper describes the application of location oriented mobile system in National Science Museum Tokyo. Developed system was introduced as a real world role-playing game. About 20,000 children have experienced our game. In this paper, we describe briefly about system and argue about interaction and evaluation of game-like content for museum guide application by analyzing participants' behavior. We provided two different types of content. First content is a stamp rally type game story, which rule is simple enough to understand even if user experiences our application for the first time. Second content is designed to process a brief comment about an exhibit when user comes close to it just like museum visitor's companion does.
Japanese - 16-8 Virtual Environmet with Visualization of the Prediction Using Physical Simulation
KOHSAKA Daisuke; NISHIMURA Kunihiro; TANIKAWA Tomohiro; HIROTA Koichi; HIROSE Michitaka
PROCEEDINGS OF THE ITE ANNUAL CONVENTION, The Institute of Image Information and Television Engineers, 2005, _16-8-1_-_16-8-2_, 2005, We introduced physics simulation to VR(Virtual Reality) world, and constructed the environment like real world. We displayed both VR world and some seconds' future VR world with another physical simulator for prediction. By the suggestion, we displayed future path of table tennis ball on immersive multi-screen display "CABIN".
Japanese - 13-9 Information Presentation following users with Environmental Display
Hashimoto Kotaro; Toyota Shigenori; Tanikawa Tomohiro; Hirota Kouichi; Hirose Michitaka
PROCEEDINGS OF THE ITE ANNUAL CONVENTION, The Institute of Image Information and Television Engineers, 2005, _13-9-1_-_13-9-2_, 2005, We suggest "Environmental Display". The "Environmental Display" is a system which provides territories to display information to each and every one of users. Each territory follows each user, and he/she can always check necessary information. In this thesis, we make prototype system with PCs and projectors, and evaluate following accuracy.
Japanese - Prototype application with electromyogram interface in immersive virtual environment
Hideaki Touyama; Koichi Hirota; Michitaka Hirose
ACM International Conference Proceeding Series, 157, 271, 2005, Peer-reviwed
International conference proceedings, English - Real world video avatar: Real-time and real-size transmission and presentation of human figure
Tomohiro Tanikawa; Yasuhiro Suzuki; Koichi Hirota; Michitaka Hirose
ACM International Conference Proceeding Series, 157, 112-118, 2005, Peer-reviwed
International conference proceedings, English - The design and implementation of ubiquitous haptic device
Yuichiro Sekiguchi; Koichi Hirota; Michitaka Hirose
Proceedings - 1st Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems; World Haptics Conference, WHC 2005, Institute of Electrical and Electronics Engineers Inc., 527-528, 2005, Peer-reviwed
International conference proceedings, English - K-eXplorer : Ubiquitous Real-World Interface between People and Objects Based on a K-tai (Smart Phone) and K-stations
Ikei Yasushi; Eguchi Hiroyuki; Hirota Koichi; Hirose Michitaka
TVRSJ, 特定非営利活動法人 日本バーチャルリアリティ学会, 10, 4, 543-554, 2005, K-eXplorer is an ubiquitous real-world interface consisting of a K-tai (smart phone) and K-stations that operate between people and objects. By using K-eXplorer the user is able to access, link and manage information of real-world objects tagged with an RFID tag/QR Code, stored in a remote database through a K-tai and several K-stations installed in commodities in the workspace. K-stations have multiple I/O ports that input data from a K-tai, real-world objects, the server and the user to transfer it to the other. We have developed a prototype system of the K-eXplorer which implements three K-stations (a tray type, a desk light type and a bag type) that the user is able to refer and link to the objects with. The usability of K-stations is evaluated and the result indicated the favorable potential of the system.
Japanese - Projected augmentation - Augmented reality using rotatable video projectors
Jochen Ebnes; Koichi Hirota; Michitaka Hirose
ISMAR 2004: Proceedings of the Third IEEE and ACM International Symposium on Mixed and Augmented Reality, 26-35, 2004
International conference proceedings, English - OBOE: Oboe-like Braille interface for outdoor environment
T Amemiya; K Hirota; M Hirose
COMPUTERS HELPING PEOPLE WITH SPECIAL NEEDS: PROCEEDINGS, 3118, 498-505, 2004, Peer-reviwed
Scientific journal, English - Linear actuator for high-resolution tactile display
M. Nakashige; K. Hirota; M. Hirose
Proceedings - IEEE International Workshop on Robot and Human Interactive Communication, 587-590, 2004
International conference proceedings - Virtual leading blocks for the deaf-blind: A real-time way-finder by verbal-nonverbal hybrid interface and high-density RFID tag space
Tomohiro Amemiya; Jun Yamashita; Koichi Hirota; Michitaka Hirose
Proceedings - Virtual Reality Annual International Symposium, 165-172, 2004, Peer-reviwed
International conference proceedings, English - High Resolution Tactile Display
Nakashige Mutsuhiro; Hirota Koichi; Hirose Michitaka
Transactions of the Virtual Reality Society of Japan, THE VIRTUAL REALITY SOCIETY OF JAPAN, 9, 3, 275-282, 2004, Braille displays have been used to present symbolic information to blind person's finger tips. However, these displays could not convey schematic information such as figures. For the presentation of schematic information, we need to develop tactile display that consists of pin array of higher resolution. To attain higher resolution we propose a novel actuation mechanism using low melting point metal. The low melting point metal is used to fix each pin; usually, the pin is clutched because the metal is solid, once the metal is melted by a heater, the pin is released and pushed up or down using compressed air. We implemented prototype display devices that has 10x10 pin array, whose interval is 2mm and pin diameter is 0.5mm, actuated by the proposed mechanism, and evaluated the characteristics of the devices.
Japanese - Development of the real-world media information management system using a K-tai and a wearable
IKEI Yasushi; TANAKA Hideaki; HIROSE Yoji; HIROTA Koichi; HIROSE Michitaka
Human interface, ヒュ-マンインタフェ-ス学会, 5, 2, 303-311, 26 May 2003
Japanese - Expression imbalance map: a new visualization method for detection of mRNA expression imbalance regions.
Makoto Kano; Kunihiro Nishimura; Shumpei Ishikawa; Shuichi Tsutsumi; Koichi Hirota; Michitaka Hirose; Hiroyuki Aburatani
Physiological genomics, 13, 1, 31-46, 18 Mar. 2003, True, We describe the development of a new visualization method, called the expression imbalance map (EIM), for detecting mRNA expression imbalance regions, reflecting genomic losses and gains at a much higher resolution than conventional technologies such as comparative genomic hybridization (CGH). Simple spatial mapping of the microarray expression profiles on chromosomal location provides little information about genomic structure, because mRNA expression levels do not completely reflect genomic copy number and some microarray probes would be of low quality. The EIM, which does not employ arbitrary selection of thresholds in conjunction with hypergeometric distribution-based algorithm, has a high tolerance of these complex factors. The EIM could detect regionally underexpressed or overexpressed genes (called, here, an expression imbalance region) in lung cancer specimens from their gene expression data of oligonucleotide microarray. Many known as well as potential loci with frequent genomic losses or gains were detected as expression imbalance regions by the EIM. Therefore, the EIM should provide the user with further insight into genomic structure through mRNA expression.
Scientific journal, English - Cluster overlap distribution map: Visualization for gene expression analysis using immersive projection technology
M Kano; K Nishimura; S Tsutsumi; H Aburatani; K Hirota; M Hirose
PRESENCE-TELEOPERATORS AND VIRTUAL ENVIRONMENTS, 12, 1, 96-109, Feb. 2003, Peer-reviwed
Scientific journal, English - Interaction with Wearable Systems Based on Auditory Localization
HIROTA KOICH; HIROSE MICHITAKA
Transactions of Information Processing Society of Japan, 一般社団法人情報処理学会, 44, 1, 156-165, 15 Jan. 2003, It is a merit of using wearable systems that we can use computers while doing other tasks. Even before the emergence of wearable computers, we were using auditory devices such as head phone stereos in a wearable style. The audio is hence thought to be a media that is most suitable for wearable interactions. We propose an interaction method between the user and the wearable systems based on the auditory localization. The concept of the method is based on the notion to introduce the selection mechanism of visual GUI into auditory interaction. In our approach, users interact with auditory icons using auditory pointers to select functions and objects. In this paper, we report the experiments on the efficiency and the accuracy of auditory pointing. We used a wearable auditory system, which consists of an auditory localization deyice based on HRTF, motion sensors to measure the angular posture of the head and the pointing device, and a notebook PC to control these device and sensors. We quantitatively evaluated the accuracy in the recognition of sound orientation, the time required for pointing the target icon, and the effect of noise during the pointing operation. Through these experiments, we confirmed the feasibility of the interaction method based on the auditory localization.
Japanese - All-around display for video avatar in real world
Hiroyuki Maeda; Kazuhiko Hirose; Jun Yamashita; Koichi Hirota; Michitaka Hirose
Proceedings - 2nd IEEE and ACM International Symposium on Mixed and Augmented Reality, ISMAR 2003, Institute of Electrical and Electronics Engineers Inc., 288-289, 2003
International conference proceedings, English - Multimedia Virtual Laboratory
Hirota Koichi; Hirose Michitaka
TVRSJ, 特定非営利活動法人 日本バーチャルリアリティ学会, 8, 1, 47-56, 2003, As broadband network spreads, it is becoming a topic of interest to implement novel communication framework that will provide more convenience than the communication through telephone and TV conferencing. Such broadband networks is advantageous to previous services in that they provide means to transmit additional information to video and audio. On the other hand, because of recent advancements of VR technologies, such as the immersive projection technology that realize high quality visual presentation, it is becoming more realistic to use the technologies for the purpose of communication. In this paper, we discuss how we will be able to support research communications using the technologies of network and VR; based on the survey of previous works on communication and networked VR, we describe our idea for the implementation of research communication environment; also will introduce the activities of Multimedia Virtual Laboratory Project that is carrying out empirical studies on supporting research communications.
Japanese - Dexterous object manipulation based on collision response
Koichi Hirota; Michitaka Hirose
Proceedings - Virtual Reality Annual International Symposium, 232-239, 2003, Peer-reviwed
International conference proceedings, English - Development of High Resolution Tactile Display
Nakashige M.; Hirota K.; Hirose M.
The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), The Japan Society of Mechanical Engineers, 2003, 0, 50-50, 2003, Peer-reviwed, 点字ディスプレイに代表される平面点刺激型触覚ディスプレイにおいて, 効率的に複雑な表示の実現を目的とする。そのための高密度な刺激生成のために新たなアクチュエーションメカニズムを提案し, 装置を開発する。
Japanese - Visualization of Gene Expression Data for Finding Abnormal Chromosome Region
NISHIMURA Kunihiro; KANO Makoto; TSUTSUMI Shuichi; ABURATANI Hiroyuki; HIROTA Koichi; HIROSE Michitaka
Journal of the Visualization Society of Japan, 可視化情報学会, 22, Suppl.1, 115-118, 01 Jul. 2002
Japanese - Visualization of gene expression data using the pathway information in a cell
ABE Koji; NISHIMURA Kunihiro; TSUTSUMI Shuichi; HIROTA Koichi; ABURATANI Hiroyuki; HIROSE Michitaka
ITE Technical Report, The Institute of Image Information and Television Engineers, 26, 35, 21-24, 10 Jun. 2002, Genome science researchers hope to be able to analyze and grasp whole gene expression data to understand the system in a cell. We developed a visualization tool for gene expression data, using pathway information. The significant feature of the tool is that integrats biological information as spatial. Using this tool with Immersive Projection Display (EPD), it is easy for grasp of the whole system in a cell and evaluating the change of gene expression data between samples. We think that more biological information is integrated by this tool and help us more understanding about a cell.
Japanese - Visualization for genome function analysis using immersive projection technology
Makoto Kano; Shuichi Tsutsumi; Kunihiro Nishimura; Hiroyuki Aburatani; Koichi Hirota; Michitaka Hirose
Proceedings - Virtual Reality Annual International Symposium, 224-231, 2002
International conference proceedings, English - Model Generation for Haptic Visualization of Volume Data
Hirota Koichi; Hirose Michitaka
TVRSJ, 特定非営利活動法人 日本バーチャルリアリティ学会, 7, 3, 375-383, 2002, In this paper, we describe an approach to generating the tetrahedral mesh model from the CT data for the purpose of haptic representation of the volume data by the spatial constraint based haptic rendering algorithm. In the approach we propose the idea of adaptive mesh generation to reduce the memory space consumption. Also, we introduced the idea of conditional node merging to obtain the model that is topologically more suitable for the haptic rendering. We quantitatively evaluated the performance of our approach; the adaptive mesh generation method reduced the memory consumption of the process to 1/2-1/9, and the conditional node merging had considerable merit in deducing the run-time computation time of the haptic rendering.
Japanese - Gene Expression Analysis using Immersive Projection Display
NISHIMURA Kunihiro; KANO Makoto; ABURATANI Hiroyuki; HIROTA Koichi; HIROSE Michitaka
ITE Technical Report, The Institute of Image Information and Television Engineers, 25, 38, 17-20, 11 Jun. 2001, The analysis of gene expression data is expected to make clear the functions of genes in the genome science field. As the gene expression data are one of parameters of state of cells, genome science researchers hope to be able to analyze and grasp the whole gene expression data. We visualize the multi-dimensional gene expression data to understand and to deepen the insight of it. We construct the virtual environment to analyze the gene expression data interactively and to show the process of analysis using Immersive Projection Display (CABIN).
Japanese - HapticGEAR: The Development of a Wearable Force Display System for Immersive Projection Displays.
Michitaka Hirose; Koichi Hirota; Tetsuro Ogi; Hiroaki Yano; Naoyuki Kakehi; Makoto Saito; Mutsuhiro Nakashige
Proceedings - Virtual Reality Annual International Symposium, IEEE Computer Society, 123-130, 2001
International conference proceedings - Development of Virtual Work Space with Force Feedback using HapticWorkBench
NAKASHIGE Mutsuhiro; SAITO Makoto; HIROTA Koichi; HIROSE Michitaka
The Proceedings of Design & Systems Conference, The Japan Society of Mechanical Engineers, 2001, 0, 323-324, 2001, Peer-reviwed, In this paper, the development of a VR system called HapticWorkBench and the evaluation of the system usability are reported. The HapticWorkBench consists of a wide-screen stereoscopic visual display based on Immersive Projection Technology and a force display. We employed a wearable force feedback device called HapticGEAR to provide a wide working area to the user. We performed an experiment to simulate is simple assembling task where the sensation of touch on objects, the collision between parts, and the weight of holding components are fed back to the user through the force display. In conclusion, we proved the force sensation provides the efficiency of the task.
Japanese - Implementation of partial surface display
Koichi Hirota; Michitaka Hirose
Presence: Teleoperators and Virtual Environments, MIT Press Journals, 7, 6, 638-649, 1998, Peer-reviwed
Scientific journal, English - Development of Haptic Interface Platform(HIP)
廣瀬通孝; 岩田洋夫; 池井寧; 小木哲朗; 広田光一; 矢野博明; 筧直之
Transactions of the Virtual Reality Society of JAPAN, 3, 3, 111-119, Jan. 1998, Peer-reviwed
Scientific journal, Japanese - Application of Surface Display into Shape Forming Task
HIROTA Koichi; SAITO Jun; HIROSE Michitaka
Transactions of the Japan Society of Mechanical Engineers. Series C., 一般社団法人日本機械学会, 61, 586, 2434-2439, 25 Jun. 1995, The sensation of touch and force is generated or conducted through the phenomenon of contact. This fact make us aware of a new force feedback method, which was named the concept of Surface Display. In this concept, we are remarking not on the force between the user and the object but on the surface and existence of the object. The force feedback device based on this concept presents the surface of an object, the user interact with the surface. Force is caused only as a result and it is measured by the device for the simulation of the behavior of the object. In this paper, the application of this device into a shape forming task is discussed. We have developed a kind of the virtual clay modeling environment, in which the shape of the surface can be changed by pushing directly on the surface. Sensation of making contact with the surface and the sensation of force caused by the elasticity of the clay is fedback by using the device. From an experiment in the environment, the importance and effectiveness of force feedback was made clear.
Japanese - Providing Force Feedback in Virtual Environments
Koichi Hirota; Michitaka Hirose
IEEE Computer Graphics and Applications, 15, 5, 22-30, 1995
Scientific journal, English - Simulation and presentation of curved surface in virtual reality environment through surface display
Koichi Hirota; Michitaka Hirose
Proceedings - Virtual Reality Annual International Symposium, 211-216, 1995
International conference proceedings, English - Surface display: presentation of curved surface in virtual reality environment
Koichi Hirota; Michitaka Hirose
Advances in Human Factors/Ergonomics, 20, C, 461-465, 1995, Peer-reviwed
Scientific journal, English - Surface display: a force feedback system simulating the surface of an object
Koichi Hirota; Michitaka Hirose
Robot and Human Communication - Proceedings of the IEEE International Workshop, IEEE, 251-254, 1994
International conference proceedings, English - Development of surface display
Koichi Hirota; Michitaka Hirose
1993 IEEE Annual Virtual Reality International Symposium, Publ by IEEE, 256-262, 1993
International conference proceedings, English - 人工現実感技術を利用した視覚的臨場感生成の研究
廣瀬 通孝; 広田 光一; 木島 竜吾; 菅野 政明; 早川 和弘; 横山 賢介
第７回ヒューマン・インタフェースシンポジウム論文集, 計測自動制御学会, 1991, 675-682, 31 Jan. 1991
MISC
- Vibration Generation for Tactile Rendering Using Generative Adversarial Network
宇治土公 雄介; 伴 祐樹; 広田 光一
We constructed a generative model that output vibration by inputting the material attributes and images. By using this model, the application developer can collect the vibrotactile signals even when the material developer does not have the material per se at hand or when there is no vibration of the desired material in the dataset. Experiments showed that in almost all conditions the vibration generated by the model can not be distinguished from true vibration and that generated reality feels the same degree of realism as real vibration., 26 Feb. 2020, 情報処理学会論文誌コンシューマ・デバイス＆システム（CDS）, 10, 1, 1-14, Japanese, 2186-5728, 170000181741, AA12628043 - Roughness perception change by controlling the visual movement of a pen point.
田中徳彦; 宇治土公雄介; 櫻井翔; 野嶋琢也; 広田光一
2020, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 25th, 1349-5062, 202102232091203817 - 敵対的学習を用いた触覚提示向け振動の自動生成
宇治土公雄介; 宇治土公雄介; 伴祐樹; 広田光一
2019, 情報処理学会研究報告(Web), 2019, CDS-25, 201902258656082348 - VR手による触覚と操作のシミュレーション
広田 光一
日本シミュレーション学会, Mar. 2018, シミュレーション, 37, 1, 27-32, Japanese, Peer-reviwed, Introduction scientific journal - pompomモデルに基づく粒子ベースシミュレーション
山内博貴; 田川和義; 広田光一; 田中弘美
2017, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 22nd, 1349-5062, 201902230314156890 - Presenting Pseudo-resistive Force on Touch Interfaces by Controlling a Displacement between the Finger and Background Images
宇治土公雄介; 鳴海拓志; 伴祐樹; 伴祐樹; 谷川智洋; 広田光一; 廣瀬通孝
2017, 日本バーチャルリアリティ学会論文誌(Web), 22, 3, 2423-9593, 201702285182593882 - KKse : Interactive Kitchen Knife Safety Education System for Children
齊藤 志保; 野嶋 琢也; 広田 光一; 櫻井 翔
電子情報通信学会, 01 Dec. 2016, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116, 340, 39-44, Japanese, 0913-5685, 40021060749, AN10012921 - A Research of Non-Magnetic Interference Multi-Finger Haptic Interface
内山 貴雄; 赤羽 克仁; 佐藤 誠; 広田 光一
電気学会, 18 Mar. 2016, 電気学会研究会資料. PI = The papers of Technical Meeting on "Perception Information", IEE Japan,, 2016, 28, 33-38, Japanese, 40020804338, AA12601138 - タッチパネルでの背景移動量操作による擬似触力覚において手が見えることの効果の検証
鳴海拓志; 宇治土公雄介; 伴祐樹; 谷川智洋; 広田光一; 廣瀬通孝
2016, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 21st, 1349-5062, 201602247146898744 - 知覚される自己身体サイズの改変が可能な歩行感覚生成装置
濱田健夫; 吉保克哉; 近藤亮太; 池井寧; 広田光一; 雨宮智浩; 北崎充晃
2016, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 21st, ROMBUNNO.34F‐01, Japanese, 1349-5062, 201602237105515780 - Correlation between otoacoustic emissions and temporal fine-structure processing
大塚 翔; 広田 光一; 柏野 牧夫
日本音響学会聴覚研究委員会, 14 Jun. 2012, 聴覚研究会資料, 42, 4, 405-409, Japanese, 1346-1109, 40019377679 - A System for Creating the Content for a Multi-Sensory Theater
EBISAWA Seichiro; HIROTA Koichi; AMEMIYA Tomohiro; IKEI Yasushi
This paper reports on the current progress in a project to develop a multi-sensory theater. The project is focused not only on the development of hardware devices for multi-sensory presentations but also on an investigation into the framework and method of expression for creating the content. Olfactory, wind, and pneumatic devices that present the sensation of odor, wind and gusts, respectively, were developed and integrated into an audio-visual theater environment. All the devices, including the video device, are controlled through a MIDI interface. Also, a framework for creating the multi-sensory content by programming the sequence of device operations was proposed and implemented., The Institute of Electronics, Information and Communication Engineers, 21 Jun. 2011, Technical report of IEICE. Multimedia and virtual environment, 111, 101, 27-30, Japanese, 2185-9329, 110008746557, AN10476092 - The Research of the skillful Object Manipulation : The Report about the System Constructing and the pre-Experiment
MIZUTORI Minato; HIROTA Koichi
Recent gains in technology make virtual environment more close to the real world. But manipulation in virtual environment is not as "skillful" as in real environment. We developed the virtual system to clarify the factor of skillful manipulation. In this system, operator throws and catches the ball as same as in the real world. Pre-experiment was made and the system is found to be able to simulate the object throwing and catching., The Institute of Electronics, Information and Communication Engineers, 21 Jun. 2011, Technical report of IEICE. Multimedia and virtual environment, 111, 101, 61-65, Japanese, 2185-9329, 110008746563, AN10476092 - A system for creating the content for a multi-sensory theater
海老澤 清一郎; 広田 光一; 雨宮 智浩
映像情報メディア学会, Jun. 2011, ITE technical report, 35, 25, 27-30, Japanese, 1342-6893, 40018924350, AN1059086X - The research of the skillful object manipulation: the report about the system constructing and the pre-experiment
水鳥 未那人; 広田 光一
映像情報メディア学会, Jun. 2011, ITE technical report, 35, 25, 61-65, Japanese, 1342-6893, 40018924356, AN1059086X - An elasticity information compression method for impulse response deformation model
Tagawa Kazuyoshi; Hirota Koichi; Hirose Michitaka
In this paper, an elasticity information compression method for impulse response deformation model is discussed. In our past paper, we proposed an approach to haptic interaction with dynamically deformable object. In the approach, the behavior of an object is defined by a set of temporal deformation patterns after impulse force is applied to each degree of freedom, which we call impulse response deformation model. The time complexity of computing interaction force is independent of the complexity of the model, however, vast memory is required to store variety of impulse responses. To solve this problem, we discuss about compression method of the impulse renponses., The Institute of Electronics, Information and Communication Engineers, 02 Jun. 2008, IEICE technical report, 108, 77, 63-66, Japanese, 0913-5685, 110006951683, AN10476092 - Implementation of Automultiscopic Display providing Spherical Coverage
DOYAMA Yusuke; TANIKAWA Tomohiro; TAGAWA Kazuyoshi; HIROTA Koichi; HIROSE Michitaka
Volumetric 3D displays are able to provide spherical coverage but unable to present occlusion. On the other hand, automultiscopic 3D displays are able to present occlusion but unable to provide spherical coverage. Therefore, we developed the omni-directional automultiscopic display, which can provide both spherical coverage and occlusion. The display consists of two parts: a mirror covered with holographic diffuser rotating around two axes and a modified high-speed DMD projector. This paper describes theory and implementation of the novel display, mainly focusing on its hardware structure., The Institute of Image Information and Television Engineers, 02 Jun. 2008, ITE technical report, 32, 22, 13-18, Japanese, 1342-6893, 110007385293, AN1059086X - 任意方向から視認可能な全天周多視点ディスプレイに関する研究
土山 裕介; 谷川 智洋; 田川 和義; 広田 光一; 廣瀬 通孝
ヒュ-マンインタフェ-ス学会, 02 Jun. 2008, ヒューマンインタフェース学会研究報告集 : human interface, 10, 2, 13-18, 1344-7270, 10021104336 - 任意方向から視認可能な全天周多視点ディスプレイに関する研究(人工現実感及び一般)
土山裕介; 谷川智洋; 田川和義; 広田光一; 廣瀬通孝
Volumetric 3D displays are able to provide spherical coverage but unable to present occlusion. On the other hand, automultiscopic 3D displays are able to present occlusion but unable to provide spherical coverage. Therefore, we developed the omni-directional automultiscopic display, which can provide both spherical coverage and occlusion. The display consists of two parts: a mirror covered with holographic diffuser rotating around two axes and a modified high-speed DMD projector. This paper describes theory and implementation of the novel display, mainly focusing on its hardware structure., 社団法人電子情報通信学会, 26 May 2008, 電子情報通信学会技術研究報告. MVE, マルチメディア・仮想環境基礎, 108, 77, 13-18, 0913-5685, 110006951674 - インパルス応答変形モデルのための柔らかさ情報の圧縮手法の検討
田川和義; 広田光一; 廣瀬通孝
2008, ヒューマンインタフェース学会研究報告集, 10, 2, 1344-7270, 200902246972903931 - Improvment of the Elasticity Information Compression Algorithm for Impulse Response Deformation Model
田川和義; 広田光一; 廣瀬通孝
2008, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 13th, 1349-5062, 200902231595957838 - 水滴を利用したVRオブジェクトを表示するディスプレイに関する研究
永徳 真一郎; 谷川 智洋; 鈴木 康広; 広田 光一; 岩井 俊雄; 廣瀬 通孝
日本バ-チャルリアリティ学会, 30 Sep. 2007, 日本バーチャルリアリティ学会論文誌 = Transactions of the Virtual Reality Society of Japan, 12, 3, 425-436, 1344-011X, 10019957703 - Multi-viewpoint display by rotating flat display panels
広田光一; 田川和義; 田川和義; 鈴木康広
2007, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 12th, 1349-5062, 200902212454654225 - Consideration of Object’s Motion in Haptic Interaction with Dynamically Deformable Object
田川和義; 広田光一; 廣瀬通孝
2007, ヒューマンインタフェースシンポジウム論文集(CD-ROM), 2007, 1345-0794, 200902267978667420 - A Representation of Haptic Interaction with Elastic Objects with Dynamic Deformation and movement-Considertion of Torque Model
山崎貴史; 田川和義; 広田光一; 廣瀬通孝
2007, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 12th, 1349-5062, 200902298475183089 - ゲノムコピー数解析のためのインタラクティブ可視化環境の考察
西村 邦裕; 谷川 智洋; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 2007, 日本バーチャルリアリティ学会論文誌 = Transactions of the Virtual Reality Society of Japan, 12, 4, 497-508, 1344-011X, 10020130141 - Auditory interface for menu selection using three-dimensional sound : Simultaneous presentation with localization
WATANABE Yosuke; HIROTA Koichi; IKEI Yasushi
ヒュ-マンインタフェ-ス学会, 21 Nov. 2006, Human Interface, 8, 4, 15-18, Japanese, 1344-7270, 10018633582, AA11324462 - 分散型物理シミュレータを用いたVR空間の構築 : 処理および通信パイプラインの改良
幸坂 大輔; 西村 邦裕; 谷川 智洋; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 30 Sep. 2006, 日本バーチャルリアリティ学会論文誌 = Transactions of the Virtual Reality Society of Japan, 11, 3, 421-431, 1344-011X, 10018251090 - Study of Visualization Methods of Working History for Data Analysis
西村邦裕; 谷川智洋; 広田光一; 廣瀬通孝
2006, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 11th, 1349-5062, 200902234457680816 - Simulation and Haptic Representation of Motion and Deformation of Elastic Object
田川和義; 広田光一; 廣瀬通孝
2006, 日本機械学会設計工学・システム部門講演会講演論文集, 16th, 1348-0286, 200902236730535886 - Acquiring impulse response deformation model based on measurement on real deformable object.
鄭学; 田川和義; 広田光一
2006, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 11th, 1349-5062, 200902299869833930 - ユビキタス環境におけるモバイル端末と環境端末による情報提示に関する検討
西村 勇一; 檜山 敦; 谷川 智洋; 広田 光一; 廣瀬 通孝
Dec. 2005, ヒューマンインタフェース学会研究報告集 : human interface, 7, 4, 17-18, 1344-7270, 10016895253 - 直噴式ウェアラブル嗅覚ディスプレイの開発
山田 智也; 谷川 智洋; 広田 光一; 廣瀬 通孝
ヒュ-マンインタフェ-ス学会, Dec. 2005, ヒューマンインタフェース学会研究報告集 : human interface, 7, 4, 19-22, 1344-7270, 10016895256 - 歩行動作に同期させた音の提示が歩調に与える影響について
広瀬 太郎; 谷川 智洋; 池井 寧; 広田 光一; 廣瀬 通孝
Dec. 2005, ヒューマンインタフェース学会研究報告集 : human interface, 7, 4, 23-24, 1344-7270, 10016895263 - 1A1-N-105 A Realtime Simulation Method for Representing Soft Object in Virtual Environment(Deformation and Force sense,Mega-Integration in Robotics and Mechatronics to Assist Our Daily Lives,2005 JSME Conference on Rootics and Mechatronics)
Tagawa Kazuyoshi; Hirota Koichi; Hirose Michitaka
The Japan Society of Mechanical Engineers, 09 Jun. 2005, ロボティクス・メカトロニクス講演会講演概要集, 2005, 29-29, Japanese, 110006209917, AA11902933 - プログラマブルシェーダを活用した3次元ビデオアバタの生成
浦田 順一; 谷川 智洋; 広田 光一; 廣瀬 通孝
ヒュ-マンインタフェ-ス学会, 03 Jun. 2005, ヒューマンインタフェース学会研究報告集 : human interface, 7, 3, 7-12, 1344-7270, 10015665948 - プログラマブルシェーダを活用した3次元ビデオアバタの生成
浦田 順一; 谷川 智洋; 広田 光一; 廣瀬 通孝
映像情報メディア学会, 03 Jun. 2005, 映像情報メディア学会技術報告, 29, 31, 7-12, 1342-6893, 10016588526 - プログラマブルシェーダを活用した3次元ビデオアバタの生成(人工現実感)
浦田順一; 谷川智洋; 広田光一; 廣瀬通孝
To communicate with remote user from different area, we proposed 3D video-based avatar, which provide the remote user's human figure from various viewpoint in realtime. One popular method for 3D geometrical model recognition from multi-camera images is volume intersection method. However, boxel-based volume intersection algorithm exhausts a massive amount of calculation power and memory space. So, it is difficult to generate high-resolution result image in realtime. In this paper, we propose a frame-buffer based intersection algorithm based on goldfeather method to evaluate intersection vol..., 社団法人電子情報通信学会, 27 May 2005, 電子情報通信学会技術研究報告. MVE, マルチメディア・仮想環境基礎, 105, 106, 7-12, 0913-5685, 10016576980 - 実世界ビデオアバタ--人物像の記録・伝送・再生
廣瀬 通孝; 広田 光一; 谷川 智洋
日本工業出版, Feb. 2005, 画像ラボ, 16, 2, 43-47, Japanese, 0915-6755, 40006622324 - Improving the situation assessment efficiency of monitoring systems using multiple cameras
Koji Muramatsu; Ichiro Kobayashi; Tomohiro Tanikawa; Jun Yamashita; Koichi Hirota; Michitaka Hirose
Inst. of Image Information and Television Engineers, 2005, Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers, 59, 6, 909-912, Japanese, Book review, 1342-6907, 23144467418 - Visualization of Analysis History for Genomic Copy Number Analysis
西村邦裕; 石川俊平; 油谷浩幸; 広田光一; 広瀬通孝
2005, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 10th, 1349-5062, 200902220144265612 - Research of VR Environment with Many Objects under Physical Law
幸坂大輔; 西村邦裕; 谷川智洋; 広田光一; 広瀬通孝
2005, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 10th, 1349-5062, 200902237083623600 - "NIWA" where the particle responses.
Ueoka Ryoko; Matsushima Shinobu; Hirose Taro; Eitoku Shinichiro; Urata Junichi; Hirota Koichi; Hirose Michitaka; Kuma Kengo
This paper describes the artwork we have developed for the exhibition, "NIWA" where the particle responses. The exhibition was held from July twelfth to twenty-third at OKAMURA corporation show room in Akasaka and Vennice Biennale which started from September twelfth in 2004. The authors planned the concept and developed the system for the exhibition in which visitors indoors could control a "bamboo-rake robot" to leave trails in an outdoor rock garden by using three types of interfaces: Open-space interface, tangible interface and speech interface. The authors describe the concept of the exhibition and how we developed the system. The responses and comments from visitors are also reported., 特定非営利活動法人 日本バーチャルリアリティ学会, 2005, TVRSJ, 10, 1, 49-58, Japanese, 1344-011X, 110008728870, AA11448578 - Measurement Based Representation of Elastic Objects in Virtual Environment
田川和義; 広田光一; 広瀬通孝
2005, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 10th, 1349-5062, 200902200227698269 - Representing Elastic Object in Virtual Environment
田川和義; 広田光一; 広瀬通孝
2005, 日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM), 2005, 2424-3124, 200902251836381755 - A Study of Oboe-like Braille Interface for Outdoor Environment
AMEMIYA Tomohiro; HIROTA Koichi; HIROSE Michitaka
ヒュ-マンインタフェ-ス学会, 05 Nov. 2004, Human Interface, 6, 4, 7-10, Japanese, 1344-7270, 10014120359 - ウェアラブル嗅覚ディスプレイによる匂い場の生成・提示
横山 智史; 谷川 智洋; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 30 Sep. 2004, 日本バーチャルリアリティ学会論文誌 = Transactions of the Virtual Reality Society of Japan, 9, 3, 265-274, 1344-011X, 10013577125 - 嗅覚における空間情報の伝送と提示を行うシステムの研究
谷川 智洋; 崎川 修一郎; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 30 Sep. 2004, 日本バーチャルリアリティ学会論文誌 = Transactions of the Virtual Reality Society of Japan, 9, 3, 289-298, 1344-011X, 10013577176 - Actuation mechanism for high resolution tactile display
NAKASHIGE Mutsuhiro; HIROTA Koichi; HIROSE Michitaka
ヒュ-マンインタフェ-ス学会, 07 Jun. 2004, Human Interface, 6, 3, 13-16, Japanese, 1344-7270, 10013343571, AA11324462 - Actuation mechanism for high resolution tactile display
NAKASHIGE Mutsuhiro; HIROTA Koichi; HIROSE Michitaka
映像情報メディア学会, 07 Jun. 2004, ITE technical report, 28, 28, 13-16, Japanese, 1342-6893, 10013434196, AN1059086X - Actuation mechanism for high resolution tactile display
NAKASHIGE Mutsuhiro; HIROTA Koichi; HIROSE Michitaka
Braille displays have been used to present symbolic information to blind person's finger tips. However, these displays could not convey schematic information such as figures. For the presentation of schematic information, we need to develop tactile display that consists of pin array of higher resolution. To attain higher resolution we propose a novel actuation mechanism using low melting point metal. The low melting point metal is used to fix each pin ; usually, the pin is clutched because the metal is solid, once the metal is melted by a heater, the pin is released and pushed up or down using compressed air. We implemented prototype display devices that has 10×10 pin array, whose interval is 2mm and pin diameter is 0.5mm, actuated by the proposed mechanism, and evaluated the characteristics of the devices., The Institute of Electronics, Information and Communication Engineers, 31 May 2004, Technical report of IEICE. Multimedia and virtual environment, 104, 103, 13-16, Japanese, 0913-5685, 110003270414, AN10476092 - VR環境を用いたゲノム関連展示とその操作ログの可視化
西村邦裕; 広田光一; 油谷浩幸; 広瀬通孝
2004, ヒューマンインタフェース学会研究報告集, 6, 3, 1344-7270, 200902238854409148 - Visualization for Detection of Genomic Imbalance
西村邦裕; 石川俊平; 広田光一; 油谷浩幸; 広瀬通孝
2004, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 9th, 1349-5062, 200902293966853718 - Behavior and Haptic Simulation of Elastic Objects using Convolution Integral
田川和義; 広田光一; 広瀬通孝
2004, 日本バーチャルリアリティ学会大会論文集(CD-ROM), 9th, 1349-5062, 200902224667319096 - Wearable Tactile Interface for Way-Finding Deaf-Blind People using Verbal and Nonverbal Mode
Amemiya Tomohiro; Hirota Koichi; Hirose Michitaka
This paper describes the development and evaluation of a tactile hybrid interface of verbal and nonverbal communication, which informs Deaf-Blind people of their position and direction in real-time through the tactile sensation by Finger-Braille method. Finger-Braille is one of the great commonly used communication methods among the Deaf-Blind people in Japan. We psychologically show the subjects felt tactile stimulation transmitting by the interface as simultaneous stimulation, by measuring delay of stimulus signal between both hands caused by wireless connection and time discrimination threshold of both hands. We propose a new wayfinding system using the combination of verbal and nonverbal information using the proposed interface, and verify the feasibility of instructing the correct orientation by using tactile stimulation pattern through experiments., THE VIRTUAL REALITY SOCIETY OF JAPAN, 2004, Transactions of the Virtual Reality Society of Japan, 9, 3, 207-216, Japanese, 1344-011X, 110008746935 - Optimum Stimulation Pattern for Turning Guidance using Finger-Braille Interface with Wrist Watch Computers
AMEMIYA Tomohiro; YAMASHITA Jun; HIROTA Koichi; HIROSE Michitaka
ヒュ-マンインタフェ-ス学会, 20 Nov. 2003, Human Interface, 5, 4, 71-74, Japanese, 1344-7270, 10013397190 - High resolution tactile display
NAKASHIGE Mutsuhiro; HIROTA Koichi; HIROSE Michitaka
17 Sep. 2003, 日本バーチャルリアリティ学会大会論文集 = Proceedings of the Virtual Reality Society of Japan annual conference, 8, 253-254, Japanese, 1342-4564, 10013959792, AA11429766 - ウェアラブル嗅覚ディスプレイの開発
横山 智史; 谷川 智洋; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 17 Sep. 2003, 日本バーチャルリアリティ学会大会論文集 = Proceedings of the Virtual Reality Society of Japan annual conference, 8, 69-72, 1342-4564, 10013959435 - 全周カメラシステムによる3次元アバタの研究
谷川 智洋; 広瀬 和彦; 山田 俊郎; 小木 哲郎; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 17 Sep. 2003, 日本バーチャルリアリティ学会大会論文集 = Proceedings of the Virtual Reality Society of Japan annual conference, 8, 387-390, 1342-4564, 10013960047 - Development of Virtual Leading Blocks for the Blind
AMEMIYA Tomohiro; YAMASHITA Jun; HIROTA Koichi; HIROSE Michitaka
日本バ-チャルリアリティ学会, 17 Sep. 2003, Proceedings of the Virtual Reality Society of Japan,annual conference, 8, 359-362, Japanese, 1342-4564, 10013960004 - Special Issue on Networked VR
HIROSE Michitaka; HIROTA Koichi
THE VIRTUAL REALITY SOCIETY OF JAPAN, 31 Mar. 2003, 日本バーチャルリアリティ学会論文誌 = Transactions of the Virtual Reality Society of Japan, 8, 1, 1-2, Japanese, 1344-011X, 10013976391 - Study on Requirement Spatial-size for the Visualization of the Gene Expression Data
西村邦裕; 阿部浩二; 堤修一; 広田光一; 油谷浩幸; 広瀬通孝
2003, 日本バーチャルリアリティ学会大会論文集, 8th, 1342-4564, 200902214613482913 - Survey on Needs of the Immersive Projection Technology in the Genome Information Science Field
西村邦裕; 阿部浩二; 広田光一; 油谷浩幸; 広瀬通孝
2003, 電子情報通信学会技術研究報告, 103, 106(MVE2003 1-12), 0913-5685, 200902224522103273 - Study on the Usage of Motion in Visualization for Comparison of Gene Expression Data
西村邦裕; 阿部浩二; 堤修一; 広田光一; 油谷浩幸; 広瀬通孝
2003, ヒューマンインタフェースシンポジウム論文集, 2003, 1345-0794, 200902297314951241 - Visualization of the Genome Network Information
阿部浩二; 西村邦裕; 広田光一; 井原茂男; 広瀬通孝
2003, ヒューマンインタフェースシンポジウム論文集, 2003, 1345-0794, 200902251511107010 - Visualization of the cellular networks with literature mining system
阿部浩二; 西村邦裕; 広田光一; 井原茂男; 広瀬通孝
2003, 日本バーチャルリアリティ学会大会論文集, 8th, 1342-4564, 200902270563542470 - 没入型多面ディスプレイのゲノム情報科学におけるニーズ調査
西村邦裕; 阿部浩二; 広田光一; 油谷浩幸; 広瀬通孝
2003, ヒューマンインタフェース学会研究報告集, 5, 3, 1344-7270, 200902283303211679 - 全周カメラシステムによる没入型ディスプレイのための3次元アバタの研究
谷川 智洋; 広瀬 和彦; 山田 俊郎; 小木 哲朗; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 2003, 日本バーチャルリアリティ学会論文誌 = Transactions of the Virtual Reality Society of Japan, 8, 4, 389-398, 1344-011X, 10013977267 - Establishing the out-of-door experiment environment for the wearable and mobile computers
YAMASHITA Jun; HIYAMA Atsushi; AMEMIYA Tomohiro; KOBAYASHI Ichiro; HIROTA Koichi; HIROSE Michitaka
This paper describes the out-of-door experiment environment completed at Research Center for Advanced Science and Technology (RCAST), the University of Tokyo, for supporting experiments of the wearable and mobile computers. This environment consists of wireless LAN networks, networked cameras and floor-embedded radio frequency identification (RFID) tags. These tags are embedded 1.2m each so that the location of the user is detected in few score centimeter by seeking the received RFID tags’ ID from the known position data. Some projects that have relation with this environment are also introduced in this paper., Human Interface Society, 28 Nov. 2002, Correspondences on Human Interface, 4, 5, 45-48, Japanese, 1344-7270, 10013396338 - 体験者視点画像に基づく統合VR環境の研究
谷川 智洋; 広田 光一; 廣瀬 通孝
画像電子学会, 25 Sep. 2002, 画像電子学会誌, 31, 5, 870-878, 0285-9831, 10010071812 - 嗅覚的臨場感の伝達に関する研究
崎川 修一郎; 谷川 智洋; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 18 Sep. 2002, 日本バーチャルリアリティ学会大会論文集 = Proceedings of the Virtual Reality Society of Japan annual conference, 7, 225-228, 1342-4564, 10013960930 - レーザーレンジスキャナーを用いた都市の構築に関する研究
山口 浩司; 内藤 頼孝; 谷川 智洋; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 18 Sep. 2002, 日本バーチャルリアリティ学会大会論文集 = Proceedings of the Virtual Reality Society of Japan annual conference, 7, 481-484, 1342-4564, 10013961436 - The Study of Navigating The Deaf-Blind in the Ubiquitous Barrier-Free Space
AMEMIYA Tomohiro; KOBAYASHI Ichiro; YAMASHITA Jun; HIYAMA Atsushi; HIROTA Koichi; HIROSE Michitaka
日本バ-チャルリアリティ学会, 18 Sep. 2002, Proceedings of the Virtual Reality Society of Japan,annual conference, 7, 523-526, Japanese, 1342-4564, 10013961508 - Mixed Reality
HIROSE Michitaka; HIROTA Koichi
公益社団法人 計測自動制御学会, 10 Sep. 2002, Journal of the Society of Instrument and Control Engineers, 41, 9, 620-623, Japanese, 0453-4662, 10009679277 - VR環境の体験者視点画像に基づく統合の研究
谷川 智洋; 広田 光一; 廣瀬 通孝
ヒュ-マンインタフェ-ス学会, 10 Jun. 2002, ヒューマンインタフェース学会研究報告集 : human interface, 4, 3, 51-54, 1344-7270, 10013396035 - VR環境の体験者視点画像に基づく統合の研究(人工現実感)
谷川智洋; 広田光一; 廣瀬通孝
In this paper, we propose a new approach to building a scalable virtual environment by combining virtual sub-environments. To manage different types of users interaction, datasets, rendering methods, and so forth, we build and handle virtual sub-environments separately. To unify these sub-environments, we propose a use of an environment manager, which determines the users viewpoint of sub-environments according to the user's input, and compose display image from rendered images of them. By using the proposed methodology, we can combine sub-environments seamlessly, and build a virtual enviro..., 社団法人映像情報メディア学会, 10 Jun. 2002, 映像情報メディア学会技術報告, 26, 35, 51-54, 1342-6893, 110003671444 - Wearable Finger Braille Interface for Navigating The Deaf-Blind
AMEMIYA Tomohiro; HIYAMA Atsushi; NAKASHIGE Mutsuhiro; FUKISHIMA Satoshi; HIROTA Koichi; HIROSE Michitaka
ヒュ-マンインタフェ-ス学会, 10 Jun. 2002, Human Interface, 4, 3, 11-14, Japanese, 1344-7270, 10013395980 - VR環境の体験者視点画像に基づく統合の研究
谷川智洋; 広田光一; 廣瀬通孝
In this paper, we propose a new approach to building a scalable virtual environment by combining virtual sub-environments. To manage different types of users interaction, datasets, rendering methods, and so forth, we build and handle virtual sub-environments separately. To unify these sub-environments, we propose a use of an environment manager, which determines the users viewpoint of sub-environments according to the user's input, and compose display image from rendered images of them. By using the proposed methodology, we can combine sub-environments seamlessly, and build a virtual enviro..., 社団法人電子情報通信学会, 03 Jun. 2002, 電子情報通信学会技術研究報告. MVE, マルチメディア・仮想環境基礎, 102, 109, 51-54, 0913-5685, 110003270181 - Wearable Finger Braille Interface for Navigating The Deaf-Blind
AMEMIYA Tomohiro; HIYAMA Atsushi; NAKASHIGE Mutsuhiro; FUKISHIMA Satoshi; HIROTA Koichi; HIROSE Michitaka
This paper describes the development of interface for navigating the deaf-blind with a wearable computer and the development of the positioning system using active RFID tags. The former is designed to communicate with the computer by finger braille, which is one of the communication methods of the deaf-blind. We made two prototypes, vibration motor type and solenoid type. And the latter was chosen in order to navigate the deaf-blind smoothly in the place where other positioning systems cannot work. We evaluated the system which consists of the wearable finger braille interface and position detection using RFID tags. We report this wearable interface and RFID tags positioning system., The Institute of Electronics, Information and Communication Engineers, 03 Jun. 2002, Technical report of IEICE. Multimedia and virtual environment, 102, 109, 11-14, Japanese, 0913-5685, 110003270174 - 細胞内パスウェイ情報を利用した遺伝子発現量データの可視化
阿部浩二; 西村邦裕; 堤修一; 広田光一; 油谷浩幸; 広瀬通孝
2002, ヒューマンインタフェース学会研究報告集, 4, 3, 1344-7270, 200902120481137320 - Visualization for Gene Selection using Immersive Projection Display.
西村邦裕; 阿部浩二; 堤修一; 油谷浩幸; 広田光一; 広瀬通孝
2002, 日本バーチャルリアリティ学会大会論文集, 7th, 1342-4564, 200902151998792070 - Visualization of gene expression data using the pathway information in a cell.
阿部浩二; 西村邦裕; 堤修一; 広田光一; 油谷浩幸; 広瀬通孝
2002, 電子情報通信学会技術研究報告, 102, 109(MVE2002 1-11), 0913-5685, 200902181850254075 - Wearable Finger Braille Interface for Navigating The Deaf-Blind
Amemiya Tomohiro; Hiyama Atsushi; Nakashige Mutsuhiro; Fukushima Satoshi; Hirota Koichi; Hirose Michitaka
This paper describes the development of interface for navigating the deaf-blind with a wearable computer and the development of the positioning system using active RFID tags. The former is designed to communicate with the computer by finger braille, which is one of the communication methods of the deaf-blind. We made two prototypes, vibration motor type and solenoid type. And the latter was chosen in order to navigate the deaf-blind smoothly in the place where other positioning systems cannot work. We evaluated the system which consists of the wearable finger braille interface and position detection using RFID tags. We report this wearable interface and RFID tags positioning system., The Institute of Image Information and Television Engineers, 2002, ITE Technical Report, 26, 0, 11-14, Japanese, 1342-6893, 110003671437 - 嗅覚情報伝送に関する研究
崎川 修一郎; 谷川 智洋; 坂本 俊輔; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 19 Sep. 2001, 日本バーチャルリアリティ学会大会論文集 = Proceedings of the Virtual Reality Society of Japan annual conference, 6, 217-220, 1342-4564, 10009538042 - 異種VR環境の統合によるスケーラブルなVR環境の構築
谷川 智洋; 広田 光一; 廣瀬 通孝
日本バ-チャルリアリティ学会, 19 Sep. 2001, 日本バーチャルリアリティ学会大会論文集 = Proceedings of the Virtual Reality Society of Japan annual conference, 6, 287-290, 1342-4564, 10009538157 - バーチャルリアリティにおける動きの計測--仮想世界の人体モデルへの動作の入力と再現 (特集 動きを計測する--データ収集と処理の進歩)
中垣 好之; 広田 光一; 廣瀬 通孝
杏林書院, Aug. 2001, 体育の科学, 51, 8, 615-618, Japanese, 0039-8985, 40002276521 - ウェアラブル/アウトドアVR研究委員会
廣瀬 通孝; 池井 寧; 広田 光一
25 Jun. 2001, 日本バーチャルリアリティ学会誌 = Journal of the Virtual Reality Society of Japan, 6, 1, 18-20, Japanese, 1342-6680, 10013973976 - 没入型多面ディスプレイを利用した時系列遺伝子発現量解析と可視化に関する研究
西村邦裕; 加納真; 堤修一; 油谷浩幸; 広田光一; 広瀬通孝
2001, 日本バーチャルリアリティ学会大会論文集, 6th, 1342-4564, 200902103196654793 - 比較マップによる遺伝子クラスタ群の可視化
加納真; 堤修一; 西村邦裕; 油谷浩幸; 広田光一; 広瀬通孝
2001, 日本バーチャルリアリティ学会大会論文集, 6th, 1342-4564, 200902125383044315 - 没入型多面ディスプレイを用いた遺伝子発現量解析に関する研究
西村邦裕; 加納真; 油谷浩幸; 広田光一; 広瀬通孝
2001, ヒューマンインタフェース学会研究報告集, 3, 2, 1344-7270, 200902153611415390 - Gene Expression Analysis using Immersive Projection Display.
西村邦裕; 加納真; 油谷浩幸; 広田光一; 広瀬通孝
2001, 電子情報通信学会技術研究報告, 101, 109(MVE2001 1-17), 0913-5685, 200902189842447213 - Construction of Haptic Server for Remote Cooperative Work
HIROSE Michitaka; HIROTA Koichi; OGI Tetsuro; SAITO Makoto; NAKASHIGE Mutsuhiro
日本バ-チャルリアリティ学会, 18 Sep. 2000, Proceedings of the Virtual Reality Society of Japan,annual conference, 5, 269-272, Japanese, 1342-4564, 10013962089, AA11429766 - IPTによるVR環境の構築とその応用 (特集 最近のディジタルディスプレイ技術とVR)
廣瀬 通孝; 広田 光一
日本オプトメカトロニクス協会, Jan. 2000, 光技術コンタクト, 38, 1, 5-14, Japanese, 0913-7289, 40004641941 - 仮想空間における触力覚提示技術
広田光一
1999, ヒューマンインタフェース学会論文誌, 1, 4, 19-23, 10014874313 - A Baseic Study on the Presentation of the Sensation of Motion using Motion-Base
Hirose Michitaka; Otsuka Ryuuji; Hirota Koichi
In this paper, we will describe a basic study concerning the presentation of the sensation of motion using a motion-base. Firstly, the implementation of a virtual environment integrating themotion-base system and imersive visual system is stated. Next, the characteristics of the recognition of the acceleration by the human are investigated. In this study, we compared the results from two experiments: by using a car in the real world and by using the motion-base. Finally, the problems the integrating the sensations of motion and vision are studied. In this study, an investigation on the influence of the relative delay-time in presenting these two sensations is included., 特定非営利活動法人 日本バーチャルリアリティ学会, 1996, Transactions of the Virtual Reality Society of Japan, 1, 1, 16-22, Japanese, 1342-4386, 110008748644 - 触覚ディスプレイ装置による触感覚計測
齋藤 淳; 広田 光一; 廣瀬 通孝; 吉澤 修治
19 Jan. 1995, 電気学会研究会資料. IM, 計測研究会, 1995, 1, 3-7, Japanese, 10024605254 - 仮想物体の弾性モデルに関する検討
広田光一
1995, ヒューマンインタフェースシンポジウム論文集, 1995, 11, 521-526, 80008635698 - バーチャルリアリティ ソフトウェア
広田光一
1994, bit, 別冊, 仮想現実学への序曲, 132-142, 10010356277 - 面提示型触覚ディスプレイのための曲面表現デバイス
広田光一
1994, 第10回ヒューマンインターフェースシンポジウム, 193-196, 80008558514 - 仮想触覚環境の開発
広田光一
1993, 計測自動制御学会ヒューマンインターフェイス研究論文集, 2, 1, 41-41, 10004155068 - 仮想触覚環境の開発
広田光一
計測自動制御学会, 1992, 第8回ヒューマン インタフェース シンポジウム論文集, 17-22, 10006756656, AN10267944 - 触覚環境のための形状モデル
広田光一
1992, 日本機械学会ロボティクス メカトロニクス講演会'92講演論文集, 319-322, 10006716044 - 仮想空間操作における触覚の役割に関する研究
広田光一
1991, 機械学会通常総会講演会講演論文集, 1991, 68, 404-406, 20001365561
Lectures, oral presentations, etc.
- 怪獣アバタを用いたバーチャル破壊体験による非主張性軽減手法の検討
櫻井翔; 武井友里恵; 野島琢也; 広田光一
Oral presentation, Japanese, 第25回日本VR学会大会予稿集, Domestic conference
16 Sep. 2020 - 客体化された自己としてのアバタの外見がアバタへの自他判断と行動評価に与える影響
櫻井翔; 帆山遼; 野島琢也; 広田光一
Oral presentation, Japanese, 第25回日本VR学会大会予稿集, Domestic conference
16 Sep. 2020 - 人間の手のモデル化と操作
広田 光一
Oral presentation, Japanese, ライフエンジニアリング部門シンポジウム2017, 計測自動制御学会, 岐阜大 (岐阜), Domestic conference
04 Sep. 2017 - VR環境における 変形物体の表現と操作
広田 光一
Invited oral presentation, Japanese, 第17回日本VR医学会学術大会, 日本VR医学会, 芝浦工業大学（東京）, Domestic conference
26 Aug. 2017
Courses
- 大学院技術英語
The University of Electro-Communications - 大学院技術英語
電気通信大学 - ユビキタスネットワーク
The University of Electro-Communications - ユビキタスネットワーク
The University of Electro-Communications - 基礎科学実験A
The University of Electro-Communications - 対話型システム論１
The University of Electro-Communications - 基礎科学実験A
The University of Electro-Communications - 基礎科学実験A
電気通信大学 - 対話型システム特論
The University of Electro-Communications - 対話型システム特論
The University of Electro-Communications - 対話型システム論１
The University of Electro-Communications - Advanced Topics in Interactive Systems
The University of Electro-Communications - 対話型システム特論
電気通信大学 - Interactive Systems 1
The University of Electro-Communications - 対話型システム論１
電気通信大学
Research Themes
- Elucidation of Cognitive Basis of Coordinated Movement Using Fused Body VR and Realization of Skill Learning Using Human-AI Fused Body
谷川 智洋; 北川 智利; 青山 一真; 雨宮 智浩; 鳴海 拓志; 広田 光一
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (A), 24H00706
01 Apr. 2024 - 31 Mar. 2027 - 融合身体VRによる身体図式変容の心理学的基盤解明と工学的応用
廣瀬通孝
Jun. 2019 - Mar. 2024 - 実測に基づくヒト指先の精緻な実時間変形・接触シミュレータ構築と触感情報提示
田川 和義; 広田 光一
日本学術振興会, 科学研究費助成事業, 愛知工科大学, 基盤研究(B), 【柔軟指の計測とモデリング】の研究項目においては，実験用MRIを用いて被験者2名の手指のボリュームデータを取得した．MRIのメーカ（シーメンス）の技術者にも協力を仰ぎ，最適な撮像シーケンスを設定，計測を行った．計測中に手指が動くとブレが含まれてしまうため，固定用の治具（非磁性体）を作成し，手指に取り付けて計測した．手指のボリュームデータを取得後，セグメンテーション等の処理を行い，手指の解剖構造をモデル化した．指紋については，MRIの解像度での取得は難しいことから，手作業でモデル化を行った． その後，実指の腹側にマーカを着色（マジックインキを使用）し，凹凸物体（透明アクリル板）を触れた状態で，爪側から一定の押下力を与えながら，凹凸物体を接線方向に移動させ，その際の実指の動的な挙動を透明板の裏から高速度カメラで撮影する実験を行った．凹凸物体越しで撮影を行うため，アクリル板の屈折率に起因する像の歪みが問題となるが，光線追跡による補正処理を行うことで解決を試みた．その結果，補正処理が可能な凹凸形状には制限があるものの，一定精度で補正処理が可能であることがわかった． 【仮想柔軟指の実時間変形・接触シミュレーション】の研究項目においては，示指の側面側から見た際の中央断面の変形・接触シミュレータを構築した．幾何学的非線形性を考慮するために，共回転系有限要素法を用いた．接触については，各ノードに非接触/固着/滑りの3つの状態を設け，有限要素法で計算された垂直抗力と接線力の大きさにより状態遷移させた．これにより，stick-slip現象を再現した．, 20H04234
01 Apr. 2020 - 31 Mar. 2023 - 多点圧覚提示装置を介した形状触認識特性の解明
01 Apr. 2020 - 31 Mar. 2023 - VR身体を用いた全身運動における時空間的身体性変容メカニズムの解明と工学的応用
櫻井翔
01 Apr. 2019 - 31 Mar. 2022 - 手掌触覚伝達による手術手技の遠隔VR実地訓練基盤構築
田中弘美
01 Apr. 2017 - 31 Mar. 2022 - 計測に基づく手モデルの構築と操作シミュレーションの精緻化
広田光一
Principal investigator
01 Apr. 2017 - 31 Mar. 2020 - Emotional Actuation Method by manipulating Causal Attribution
Tanikawa Tomohiro; Sakurai Sho
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (A), In this research, we make it possible to change an emotional judgment by perceiving a pseudo-evoked physiological change and then to recognize the change as a result of an emotional judgment, thereby promoting or suppressing any behavior. In order to realize long-term emotional actuation, we realized tension relaxation by auditory feedback and demonstrated long-term behavior induction technology based on lifelog., 16H01740
01 Apr. 2016 - 31 Mar. 2019 - 触力覚他部位提示による能動的触認識の特性解明
広田 光一
Principal investigator
01 Apr. 2016 - 31 Mar. 2018 - A study of haptic interaction between inhomogeneous elastic objects with large deformation
TAGAWA Kazuyoshi; TANAKA Hiromi; HIROTA Koichi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), The objective of this research is realizing approaches for haptic interaction between inhomogeneous elastic objects (e.g. hands or organs which have various physical properties and geometries) with large deformation. We proposed several approaches for (a) fast, stable, continuum dynamics based and embedded deformation simulation, (b) computationally effective collision detection and a coupled simulation. Then we implemented these approaches into our palpation simulation system, and we confirmed feasibility and effectiveness of these approaches., 15H02742
01 Apr. 2015 - 31 Mar. 2018 - Elucidation of the method to create the sensation of active body motion
Ikei Yasushi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Tokyo Metropolitan University, Grant-in-Aid for Scientific Research (A), In this research, we built basic techniques to relive the behavior (physical motion) performed by others as if it was experienced by the user. A highly valuable experience of others is targeted for the reliving, and the existence of the experience beforehand (recorded) is different from the experience of a regular VR space. We explored a new multisensory presentation method that realizes a reliving experience that induced a pseudo-active sensation that the body is moved by the user not merely reproducing the motion. We implemented the method adapting the passive physical motion stimulus corresponding to the sensation of the recorded behavior, improving the pseudo-active sensation with the muscle tendon stimulus, and giving the pseudo-active sensation by allowing active input with the upper arm and the hand., 26240029
01 Apr. 2014 - 31 Mar. 2018 - Object manipulation based on deformable hand model and contact simulation
Hirota Koichi; Tagawa Kazuyoshi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), An approach to implementation of deformable hand model was proposed. Soft tissue of hand between skin and skeletons were modeled by a finite element model. Skeletal structure of the hand was represented by a link model, and the motion of finger bones by the rotation of joints was computed using the link model. The deformation of the soft tissue was simulated based on the boundary conditions given by the bones and virtual objects. The virtual object was defined using a Metaball model, or an equipotential surface of the field. Also, a method of computing contact and slip of hand on the surface of the object model using the gradient of potential filed inside and outside of the equipotential surface. A method of capturing hand motion based on the measurement of finger nails and a palm was developed. Real time simulation of object manipulation was realized by combining the hand and object models. Evaluation of reality in the object manipulation based on a questionnaire was performed., 25280072
01 Apr. 2013 - 31 Mar. 2016 - Torque Conversion Mechanism for Energy-Accumulative Force Display
HIROTA Koichi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Challenging Exploratory Research, A novel torque conversion mechanism based on mechanical switching was proposed and feasibility of implementation was investigated. The mechanism is composed of ER clutches that connect and disconnect input axle from a flywheel. Energy flow through the mechanism is controlled by changing the temporal ratio of the connected and disconnected states. Substantially continuous torque conversion is possible by performing the switching operation at a high frequency. Prototypes of the conversion mechanism were developed, analysis of the motion of the mechanism by numerical simulation was performed, and improvement of the efficiency by modification of switching control were investigated. Through those experiments, fundamental knowledge of the mechanism was obtained., 24650050
01 Apr. 2012 - 31 Mar. 2015 - Measurement and Presentation of Dynamically Deformable Elastic Object
HIROTA Koichi; TAGAWA Kazuyoshi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (B), This research was aimed at investigating approaches to acquire models of deformable objects based on measurement and developing technology to realize haptic interaction with the acquired model. We employed the Impulse Response Deformation Model(IRDM) as a model to represent deformation and devised a method to measure impulse response of real deformable object. We also developed a fast computation algorithm of interaction with the model and a data compression method based on the redundancy of the IRDM., 21300041
2009 - 2011 - 能動的力覚インタラクションによる情報伝達
広田 光一
日本学術振興会, 科学研究費助成事業, 東京大学, 挑戦的萌芽研究, (1)モデル計算手法の開発 計測された作用力からフレームに与える加速度を決定するためのモデルとして、(a)剛体モデル、(b)バネ-マス-ダンパ系モデル、(c)固形粒モデル、(d)振り子モデルを実装した。モデルパラメータは、これが発現する運動がデバイスの提示能力の範囲内であること、また実時間での計算が可能であることなどを考慮して決定した。当初予定していた流体モデルについては、計算量が検討していたよりも大きいことが明らかとなり、解決方法を引き続き検討している。上記の4つのモデルについては、4kHzでの計算を行い、デバイスを通して得られる間隔の主観的評価からも妥当なものとなっている事を確認した。 (2)提示能力と認識特性の評価 以上で開発されたシステムの力提示の特性を評価した。操作-力関係(すなわち、加速度-力関係)の提示精度については、力センサをもつ弾性押し棒(指のモデル)を介した操作を行い、両者の関係性を確認した。固体粒モデルのように、衝撃力を生じる場合にモータ出力の限界から一時的に誤差が生じるものの、昨年度に構築した重心位置の追従補正により、機構の状態が速やかにモデルの状態に戻る事を確認した。対象物表現の忠実度については、被験者による知覚・認識に関する実験をおこなって評価した。バネ-マス-ダンパ系モデルおよび振り子モデルについて、これらに含まれるパラメータ(バネ定数、ダンパ定数)などに関する弁別の可能性を確認した。以上の実験を通して、能動的力覚インタラクションを通してモデルパラメータの情報を伝達できることを確認した。, 21650025
2009 - 2010 - Bioengineering study of a motor rehabilitation system using a metal hydride actuator
INO Shuichi; YAMASHITA Kazuhiko; HIROTA Kohichi; SATO Mitsuru; NAKAJIMA Sawako; IFUKUBE Tohru; TANAKA Toshiaki; WADA Chikamune; ITO Hideaki; YOSHIDA Naoki; SHIROGANE Satoshi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (B), In an aging society, there is concern that the population of bedridden elderly people will increase due to diseases and injuries such as cerebral strokes and bone fractures. From this social background, we have been developing a motor rehabilitation system using a soft metal hydride actuator for home health care and joint rehabilitation to help prevent disuse syndromes. To address the above concerns, we studied the effect of passive joint exercise and the evaluation index of fall risk for elderly people based on biomedical experiments, and developed a human-friendly soft actuator using an MH alloy for the compact source of a driving force, many of which were undertaken in collaboration between medicine and engineering., 18300191
2006 - 2009 - Haptic presentation of dynamically deformable object
HIROTA Koichi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (B), 仮想環境における弾性仮想物体の操作と反力のフィードバックを実現するための手法として、インパルス応答変形モデルを提案し、その実験的実装と有効性の検証をおこなった。具体的には運動と変形のモデルを分離することで運動する変形物体を表現する手法、面的接触を効率的に扱うための仮想の自由度の導入手法、自由度の自乗に比例するデータ量をもつインパルス応答を幾何学的近傍での類似性に基づいて圧縮する手法、近年普及の著しいグラフィックスハードウェアを用いた処理の高速化手法などを開発した。, 19300034
2007 - 2008 - 共同学習を支援するためのVRを用いたインタフェイスと表現方法の研究
廣瀬 通孝; 広田 光一; 山下 淳; 谷川 智洋
日本学術振興会, 科学研究費助成事業, 東京大学, 特定領域研究, 1.没入型スクリーンを用いた物理現象体感コンテンツの試作と実験、および評価 理科教育において、物体の落下や投擲時の挙動など物理現象の理解は非常に重要なトピックとなっている。ネットワークを介して物理シミュレーションと没入型スクリーンとの接続を行うことで物理現象を体験可能な理科教育用コンテンツの試作を行った。没入型スクリーン内で現実空間同様に卓球を行い、卓球の球やブロック等が現実同様の挙動をするVRコンテンツを制作することができた。 本年度は、実環境に近い体験学習を理科教育で実現するために「提示されて物体を触って動かせること」「触れた物体が物理法則に従って動くこと」の2点をもつ実環境に近いVR環境の実現を行った。具体的には分散型物理シミュレーションを利用し、分散された物理シミュレーション同士の接続手法を提案し、実環境に近い量(10,000個程度)の物体とインタラクションが可能なVR環境構築を行った。このシステムを用いることで、現実環境同様のインタラクションで物理現象を学習出来る理科教材を製作することが可能になる。 2.タンジブル地球儀コンテンツの実証実験 タンジブル地球儀コンテンツが実際の天文教育に対してどれくらい有効であるか、また問題となる点はどこか、といったことを明らかにするため、システムを用いた評価実験を行った。本研究ではつくば市立吾妻中学校の教諭及び生徒の協力を得て、理科の特別授業という形で希望する生徒を対称に実験を行った。 a)地球儀上でのアバタの移動を考慮した空間認知 オーストラリアでは太陽は北に昇ることを確認したあち、「日本とオーストラリアで太陽の昇る方角が異なる理由を説明してみよう」という課題を与えた。生徒らは、地球儀とアバタの位置関係を参考にした考察を行っていた。 b)視点移動の困難さ ホンジュラスやオーストラリアなど、太陽の軌道が高くなる場所の時、アバタ頭部をパン・チルト方向に動かす操作によって太陽の動きを追うのが困難であると感じさせる場面が見られた。この理由として、アバタの頭部がロール方向に対する自由度を持たなかったことがある。アバタの仰角が大きくなる場合、パン方向の操作は天頂を中心とする回転運動になる。このため、太陽を画面の中心に移動させるような操作に対して困難が見られた。, 17011019
2005 - 2006 - 装着型体験記録装置の情報を用いた,体験記憶再生方式に関する研究
廣瀬 通孝; 広田 光一; 上岡 玲子
日本学術振興会, 科学研究費助成事業, 東京大学, 特定領域研究, 本研究は,ウェアラブルコンピュータを用いて個人の主観的体験を記録することにより,その体験構造から人間の行動特性を明らかにすることを目的としている.本年度は,長時間の人生の記録,「ライフログ」を前提に,記録した大量の体験情報の再生手法を検討するため,時間・位置らを基準軸にした体験情報の再生手法の提案をした.また,体験者の発話記録を日常的に長期間記録し,発話情報を俯瞰的に捉えることで個人の生活行動のパターンを発見することができることを示した. 具体的には,多種類・大容量の体験情報を提示するための効率的手法として,情報の粒度を変えたインタフェースの検討を行った.これは,1日のシンポジウムを題材にして記録された様々な情報(俯瞰カメラ,音声,議事録,聴衆者の議事録メモ)を,時間軸の粒度(年,月,分,秒)を自在に制御することで,俯瞰して全体・詳細の把握ができるようにした.それにより,長期間の体験情報を各粒度により圧縮,提示することができ,長時間に及ぶ体験情報を再生するための有効な手段を示すことができた. また,小型GPSを用いた1年間の位置記録情報をもとに,研究室・自宅・駅など行動別のカテゴリー化を行い,長時間の体験情報を圧縮し,体験の俯瞰・構造化の検討を行った.これにより,日常行動と非日常行動の差別化,習慣的行動パターンの把握が可能であることが判明した.発話情報の記録は,約3ヶ月の発話情報を,統計的手法を用い,月別の発話量や発話量の時間軸遷移を提示することで,発話記録による生活行動パターンの推測の可能性を示唆することができた., 16016222
2004 - 2005 - Construction of Measurement, Transfer and Reproduction System of Elasticity
HIROTA Koichi; HIROSE Michitaka
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (B), The objective of this research is to construct measurement, transfer and reproduction system of elasticity of deformable objects. At first, we have developed following three measurement and record methods which are suitable for display of elastic information, 1.The reaction forces of an object are defined by a force field. 2.The deformation of an object is defined by a stiffness matrix. 3.The behavior of an object is defined by a set of temporal deformation patterns after impulse force is applied to each degree of freedom, which we call impulse response deformation model. Deformation resulting from interaction is obtained by computing convolution of the model and the history of interaction force. The time complexity of computing interaction force is independent of the complexity of the model. This feature is advantageous for time-critical applications. Also, the time complexity of computing object deformation is linearly proportional to the complexity of the model. And then, we have constructed measurement system using a robot arm, a force sensor, a optical position sensor (OPTOTRAK) and simulation. Finally, we have evaluated and confirmed feasibility and performance of the proposed methods., 15300030
2003 - 2005 - Research about Realtime Obstruct Eliminating System by using Multi Cameras
HIROSE Michitaka; HIROTA Koichi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (A), In this study, we proposed new approach to generate novel view from which obstacles are removed by using multiple cameras. To be utilized in public environment like city, the approach should have the flexibility and scalability against the alignment of cameras. By observing the obstacle-eliminated images from any point of view, user can understand an exactly ongoing event well. Thus, we proposed projective transformation based algorism to generate images in real time. By clustering feature points of input images and subdividing images depend on the clustered points, our algorism can be applied to scene in which obstacles are located in front of complex objects. Afterward, by morphing images based on the subdivided images, our approach can generate images from any viewpoint between cameras. In this work, we implemented a prototype capturing system based on the approach. The system consists of management PC and many cameras and node PCs. To maintain the performance of the system, the cameras should not be manage by one PC, and therefore we use node PCs which are connected to each camera individually. All node PCs are connected with the management PC (Pentium 4 XEON 2.8GHz) through a gigabit network (1000BASE-TX). By using this prototype system, we evaluated the performance and flexibility of the proposed method for real-time obstacle elimination. In case of several cameras, frame rate of obstacle-eliminated image is 7-10 [fps] and delay time is 160-200 [msec]. And in any patterns of camera alignments, we can eliminate obstacle from images. Also we can see the scene from any viewpoint between the camera positions while eliminating obstacles. These results show that the proposed method can eliminate obstacle from the scene in real-time by using randomly aligned cameras. In the future, by applying the method to security cameras equipped in public environment, we can easily understand the spatial information of the scene in any time in any places., 15200008
2003 - 2005 - VR技術を用いた生命機能情報や知識の統合的可視化に関する研究
廣瀬 通孝; 油谷 浩幸; 広田 光一
日本学術振興会, 科学研究費助成事業, 東京大学, 特定領域研究, DNAチップ(Genotyping Microarray)の情報を用い,ゲノムのコピー数を対立遺伝子ごとに高解像度で見ることが出来るGIM(Genome Imbalance Map)の開発を行った.DNAチップの情報を利用して,ノイズの除去,コピー数推定,可視化という流れのシステムである.この中で,ひとつのサンプルで,あるいは複数サンプルに渡って,染色体のコピー数を一目で見ることの出来る可視化手法を提案した.染色体のコピー数が異常になっている領域(欠損領域や増幅領域)を検出するために,染色体バンドイメージを利用して可視化し,ボタンひとつでコピー数の抽出を可能にし,異常領域のみを動きなどを利用して強調表示させることを行った.これらにより,複数サンプルで比較し,全体の傾向をつかむことが可能になった.このGmの手法について,国際会議や学会にて,発表を行った. 文献情報などから作成したゲノムネットワークの可視化手法の開発などを行った.従来の可視化手法においては,ネットワークとして描くと,全く混雑してわからない絵となってしまう.本研究では,ネットワークの性質を利用して,ネットワークのノードに情報を折りたたむことなどをして,まとめていく可視化手法を開発した.この手法を利用することで,ネットワークの骨格を抽出することが可能になった. VR環境として,PCを複数台利用した大規模VR環境の開発を行った.大型コンピュータなしに,PCで構築することが可能になったために,今後の普及が期待できる.また,大規模VR環境だけでなく,裸眼立体視ディスプレイなどを利用した可搬型VR環境システムの構築を行い,3次元立体映像をどこでも提示することが可能となった. また,研究者からの情報発信としてVR環境を利用したゲノム関連展示を実施し,展示の際にアンケート調査などをした結果をまとめ,学会で発表を行った., 16014205
2004 - 2004 - 実空間における実写人物像生成システムを用いたコミュニケーションに関する研究
廣瀬 通孝; 広田 光一; 山下 淳
日本学術振興会, 科学研究費助成事業, 東京大学, 萌芽研究, 本年度では,実空間におけるビデオアバタとのインタラクションのための前段階の研究として,実空間におけるビデオアバタの実寸での提示手法の構築を目指した.実空間におけるビデオアバタ表示の重要な要素として写実性・実寸性・全周視認性を取り上げ,これらの特徴を有する提示手段としてプラズマディスプレイを回転させ,映像時分割の原理に基づく提示手法を提案し,提案手法に基づくシステムを構築した.まず,プラズマディスプレイを使用した提示システムを設計・試作し,提案する手法を用いて全周に実寸大でかつ写実的な映像を提示することが可能であることを示した.次に,全周映像の時間分解能Fと空間分解能Nはトレードオフの関係にあるため,ディスプレイパネルを二枚使用することで回転速度を維持したままで時間分解能と空間分解能の向上の検討を行った. さらに,構築した提示システムが要求事項を満たしているかの評価をおこなった.まず,撮影システムで取得可能な18方向の映像を提示できる空間分解能を持つことを確認する実験を行った.提示システムに18方向別々の映像を提示して確認を行ったところ,18方向からの映像が視点位置にあわせて提示できることが確認できた.次に,実際に18方向から撮影したビデオアバタを18方向に提示する実験を行い,写実性・実寸性・全周視認性をもつ映像を提示することが可能であることを示した.以上から,本研究で提案する手法がビデオアバタの実世界等身大提示に有効な手段となることが示せた.ビデオアバタを実空間に実寸大で示すことにより,実環境を話題とする臨場感のあるインタラクションの可能性を示すことができ,協調作業やコミュニケーションの幅が広がることが期待される., 15650013
2003 - 2004 - 問題解決型体験学習を支援するVR学習支援システムに関する研究
廣瀬 通孝; 広田 光一; 山下 淳
日本学術振興会, 科学研究費助成事業, 東京大学, 特定領域研究, 本年度は,日の出や日の入り,あるいは時差など,地球の自転・公転に関係する現象の理解を促進するためのVRコンテンツと,VRによる仮想的な世界での時間推移を任意に調節することを可能とする時間コントローラを開発した。 1.宇宙コンテンツ VR技術を用いてつくられた宇宙コンテンツは,地上から天体の動きを観察できるだけでなく,そのときの地球とその他の惑星や衛星との関係を,自由な視点から観察できる。このコンテンツは,精密に再現された太陽系全体のシーンと,地球上の4カ所の地上シーンから構成されている。 2.時間コントローラ 天文現象は空間と時間が密接に関連し合っているため,視点の操作に加えて,時間の操作が重要になる。時間の移動に対し,ゲームパッドのようなデバイスの利用は適切でない。そのため,宇宙コンテンツにおいて,時間の操作に特化したデバイスである時間コントローラの開発を行った。時間コントローラには3つのダイヤルが備わっている。今回は左側から月単位,日単位,時間単位で宇宙コンテンツ内の時間を操作できるよう設計した。 3.考察と今後の課題 実験に参加した8名の児童いずれもが時間コントローラを用いることで,日照時間の違いや時差などを理解できていることがアンケート調査などからわかった。しかし,時間の変化と惑星間の関係については必ずしも十分に理解できているとはいえていない。理由としては,時間変化に伴う惑星の動きを俯瞰的な視点で観察することが困難であることが挙げられる。今回のVRコンテンツは惑星の相対スケールなどについて,現実に対し忠実に作成した。しかし,天体の理解においてはそのことは必ずしも十分ではなく,デフォルメする必要があることもわかった。どの程度のデフォルメまでが許容されるのかについては今後の検討課題である。, 15020219
2003 - 2004 - A Study on Usages of Non-verbal Information for a Design of Information Assistive Tools
IFUKUBE Tohru; HIROSE Michitaka; FUKUSHIMA Satoshi; HIROTA Koichi; INO Shuichi; NITADORI Yasunobu
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (A), We investigated how non-verbal information should be utilized in order to improve two information acquisition tools which we designed for the visually and auditory impaired. 1.One of the tools is a new screen reader system which converts texts on the screen into synthesized speech while displaying rich text information, i.e. non-verbal information, onto a finger-tip surface by using a tactile jog-dial (TAJODA). This is a supporting tool of a web-information acquisition for visually impaired people. 2.The other tool is a new hearing assistive device (captioning system) which automatically converts speech into texts while displaying speaker's lip-movement and facial expression, i.e. non-verbal information, for the acquired hearing impaired. Research results regarding "the screen reader" are as followings. (1)The speed of synthesized speech should be changed up to 3 times faster than normal speaking rate since our findings showed the maximum listening speeds for the blind is 2.6 times faster than the normal persons. (2)The optimal number of rich texts to transmit is 7;i.e. font sizes (larger or smaller than the standard), colored letter, bold, parentheses (left or right), and paragraph. (3)Experimental results by 8 blind users showed that the acquisition speed of web sentences becomes 2.6 times faster than ordinal screen reader. Research results regarding "the captioning system" are as followings. (1)We investigated how a speaker's facial image and lip-movement (the non-verbal information) were useful for the comprehension of the sentenses (2)Experimental results show that the lip-movement was more effective than facial expression and about 2 sec delay of the lip-movement display from the captions was suitable for the fascilitation of the comprehension. (3)By combining this captioning system with the non-verbal information, the comprehension was proved apparently fascilitated through about 30 times trials at international conferences. Non-verbal information ; the tactile stimulation in TAJODA and the lip-movement in the captioning system was apparently effective to fascilitate the comprehension of contents. Furthermore, we could determin the optimal parameters of the display timing and the display method of the non-verbal information in order to improve the information assistive tools for the sensory disabled., 14208028
2002 - 2004 - 装着型機器を用いた体験記録による記憶構造の解明および記憶再生に関する研究
廣瀬 通孝; 広田 光一
日本学術振興会, 科学研究費助成事業, 東京大学, 特定領域研究, 平成15年度の特定領域研究では,平成14年度までに試作検討してきたシステムを統合した試作機を作成し,体験記録の実証実験を行った. これまでの予備実験で個人の体験記憶は,体験者を囲む外部環境と,そこから受容した情報による影響で変化する体験者自身の内的情報の,両方の側面から構成されていることが確認された.ここでは,それぞれ取得できる情報の構成が異なる2種類の試作機を提案し,ケーススタディを実施した. ケーススタディ1では生体・感覚情報の変化や音などから体験の構造化がある程度可能になった.具体的にはストレス値や不快指数の変化から,個々の体験の状態推定を行うことができた.また,作業への習熟度や作業空間の特性などの検出も行えることが明らかになった. ケーススタディ2では視野角に近い視野情報の記録により,体験空間の構成要素が中心視野のみの情報よりも明らかになり,さらに体験者自身の身体動作を同時に取得することで,体験者の環境情報への寄与を,臨場感をもって再生することが実現できた.特に身体動作の変動が大きい場合,体験者がある特定の場所や事象に対して注意を向けていることが判定できた. また,記録した多種の情報を時間軸に沿って並列的に閲覧するための再生ソフトウェアの開発を平成15年度では行った.並列して多種の情報を再生することで,各センサーデータの相互の関係を評価した.また,閾値の変更により,長時間に及ぶ体験データの中から体験者の特定の状態を取得することが明示的に行えるようになった。, 15017223
2003 - 2003 - ウェアラブルコンピュータを用いた主観的体験記録の研究
廣瀬 通孝; 広田 光一
日本学術振興会, 科学研究費助成事業, 東京大学, 特定領域研究, 屋外空間において,主観的体験を記録する方式として,ウェアラブルコンピュータの使用を検討した.本研究では,空間情報を記録するための方法論として,周辺視野の重要性と空間認知の特長を実験により明らかにし,その実験から得られた結果をふまえた,主観的体験記録装置のプロトタイプの作成を行った.具体的には以下の項目について,研究を行った. ・空間認知特性の検討実験 ・周辺視野情報の依存性の実験 ・ウェアラブルコンピュータのプロトタイプシステムの作成 空間認知特性の検討実験では,視線追跡カメラシステムを用い,空間の見回し時と読書課題の2種類のタスクを被験者に試行してもらい,それぞれの眼球運動の違いを検討した.空間見回しの場合,水平方向に多く眼球運動が検出され,また画角に収まらない場合が多く検出された.周辺視野情報依存性の実験では,視野制限マスクを使用し屋外歩行時の周辺視野情報の依存性を,視野を制限することで歩行時間や頭部の動きがどのように変化するか,得られたデータより検討した.実験から,周辺視野を120度前後にすると自然の状態とほぼ同程度のパフォーマンスが得られることが考察できた.そこで,屋外歩行時の体験記録のプロトタイプとして,画角約110度の視野が記録できるシステムを作成した.この記録システムでは,記録画像を後に状況記録として見ることを目的とするので,人が再認するに十分な解像度を持つことができるよう,プログレッシブCCDスキャンカメラを3台胸部に配列したシステムとし,1つの記録システムに画像を記録している.頭部と胸部のヨー角,ピッチ角を同時に記録し,胸部を中心としたパノラマ画像の中で実際の頭部の方向を画像上にプロットすることで,視線の方向とその周辺視野を明確にし,その記録パフォーマンスを確認できるようにした., 14019018
2002 - 2002 - VR技術を用いた遺伝子機能情報の可視化に関する研究
廣瀬 通孝; 広田 光一; 油谷 浩幸
日本学術振興会, 科学研究費助成事業, 東京大学, 特定領域研究, 本研究では遺伝子解析にVR技術を適用し,「遺伝子機能情報をVR環境内で可視化する手法の研究」,「DNAチップによる測定情報の空間内提示及びシミュレータによるモデル評価手法の研究」を大きな2本柱とした.前者について以下の1),2),次いで後者について3)の研究を実施した. 1)DNAチップによる測定情報を利用し,創薬に関連する遺伝子の絞り込み作業を行うVR環境を構築した.以下のものに関する解析作業空間構築指針を導出した:インタラクティブな可視化,広視野角の活用,身体感覚を活かした操作,作業に応じた空間構成.この指針に基づいてシステムを構築することで効果的な情報提示が可能となることを確認した. 2)DNAチップによる測定情報と染色体上の遺伝子の位置情報(locus)を統合し,染色体上での遺伝子発現異常を検出するExpression Imbalance Map(EIM)を開発した.サンプル間での遺伝子発現異常を統計的に定義し,染色体上で発現異常を確率論的に評価・可視化する手法である.従来の手法であるCGH法とEIMの整合性確認も行った.本手法は非常に解像度が高く(1遺伝子単位),CGH法などでは不可能な遺伝子レベルでの染色体のコピー数の増加などの発見が可能となった. 3)3次元空間内でPathway情報の可視化を行いタンパク質の細胞内局在情報を反映させる手法を提案した.この手法上にDNAチップによる測定情報を表示し,処理中の遺伝子をPathway上での関係性を確認しつつ理解することが可能となった.またシミュレーション結果の表示により,多数の要素に対する時間変化の関係性把握が容易となり,従来のグラフでは表現が難しい系全体のシステムとしての理解に有効であった. 現在,上記の知見を統合した環境としてVEGAS(Virtual Environment for Genome Analysis and Simulation)を開発している., 14015209
2002 - 2002 - Implementation of remote collaboration system by integrating visual and haptic sensations in immersive virtual environment
HIROTA Koichi; HIROSE Michitaka
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (B), In this research, we aimed at realizing realistic collaboration environment by integrating haptics into IPT based shared virtual environment One of topics of study is to evaluate the effect of integrating haptic sensation into communication. In our study, we qualitatively clarified that the efficiency in performing some kind of task is improved by sensation of force among communication group. Another topic of study is to design haptic control system for sharing haptic information. It is well known that delay of communication line cause serious effect on the performance of haptic communication. In our study we proposed the idea of 'Haptic Server' that manages haptic models of communication sites to keep consistency. Through experiments we proved the effect of the proposed approach. Moreover, we investigated some applications of our haptic communication system. One application is related to manufacturing, where we performed assembling an engine. Another application is related to research collaboration. Through the research, we confirmed that collaborations between remote places are qualitatively improved by providing means of haptic communication. In our future works, we are going to investigate implementing multi-modal shared virtual environment that integrates senses of smell and taste., 13450098
2001 - 2002 - ウェアラブル機器による追体験の自動記録と合成に関する研究
廣瀬 通孝; 広田 光一
日本学術振興会, 科学研究費助成事業, 東京大学, 萌芽的研究, 本研究では、ウェアラブル装着機器の特性を活かした記録方式の理論の基本的枠組みについて議論している。ウェアラブルコンピュータとはすなわち、「着ることのできる」コンピュータを意味し、常に装着者のそばで稼動することができる特性をもつ。これは半自動的主観体験記録を実現するという新しい情報機器の可能性をひらくものである。 平成13年度においては、12年度の研究実績をふまえ、主観的体験を記録するための手法について検討し、プロトタイプの試作を行った。プロトタイプの試作にあたり、主観的体験を客観的に記録するための指標として、主観記録のための5つのカテゴリ分類(Vision, Audio, Location, Emotion, Ambience)を行い、そのカテゴリに属する情報を記録対象とし、センサーの試作を行った。試作機には装着者の全方位の視覚情報を記録するためのカメラ、ステレオマイク、GPS(Global Positioning System)、方位、加速度、心拍や温度湿度の自動計測が可能なセンサーを取り付けた。 これらの取得されたデータは時系列に分類することにより、変化の度合いを各センサーごとに合成することが可能となり、多様な尺度から主観的な体験を客観的に合成するための枠組みを検討した。, 12875048
2000 - 2001 - 遠隔触診の実現に関する研究
広田 光一
日本学術振興会, 科学研究費助成事業, 奨励研究(A), (1)モデル獲得手法の確立 顔部皮膚について、接触時のやわらかさの再現をおこなう実験をおこなった。カセンサと位置センサとを組み合わせた計測システムを構築し、皮膚表面における力-変位関係の計測をおこない、これにより得られた結果を顔形状のモデルに反映させる手法を検討した。顔面上の計測点は必ずしも多く取れないことから、計測点の間の変形特性を補間により決定した。また、モデルに骨部を設けることで、変形が大きくなるにつれて剛性が高くなる効果を近似的に表現できることを確認した。 (2)応用システムの構築 力覚情報をネットワークを介して伝達・共有するシステムの構築手法を検討した。このようなシステムの構築にともなう課題として、本研究では、時間遅れをともなう系での制御の安定性に関するものと、モデルの更新や変形操作などを複数のサイトから並行しておこなうことができるようにするためのモデル管理手法に関するものを取り上げた。前者に関しては、長距離の通信における一般回線(いわゆるインターネット)とATMによる専用回線とを用いた場合の比較実験をおこない、専用回線であれば比較的安定な力情報の伝達が可能であることを確認した。後者に関しては、モデルを1つの計算機により集中的に管理する方法と、複数の計算機に分散的に保持する方法とについて比較検討をおこない、作業実験による評価の結果、変形操作などにおいては分散的に保持する方法の方が適していることが明らかとなった。, 11780304
1999 - 2000 - Development and Analysis of Wearable Force Display
HIROSE Michitaka; HIROTA Koichi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, Grant-in-Aid for Scientific Research (B)., We proposed and made a prototype of a new force display device which is wearable. With the prototype, we examined technical requirement and solution when to integrate the system with IPT (Immersive Projection Technology). In terms of the proposal and prototype of a wearable force display, we proposed a guideline of the design and specified a means of quantitative analysis for its usability. We planned a mechanism of the device not to constrain user's mobility. Taking this plan into consideration, we realized the optimum interface for a user which is less constrained to carry so as to extend a user's working area especially around upper front of the body. Talking about the integration of the device with IPT, we developed software environment in order to synchronize visual and haptic display. In general, it is said haptic display requires high refreshing rate comparing to that of visual display for smooth communication. Therefore, visual and haptic display needs to be computed separately, but at the same time, share the model information. The concrete solution for the requirement, we proposed and installed the system called "haptic server." We verified the system is in well function to realize the visual and haptic environment to expand sensory display. We expect this environment will fit virtual cooperative work by many users. It is said sense of touch is effective to manage cooperative work. Therefore we applied the idea of haptic server to monopolize haptic information among remote places and realized virtual cooperative environment among remote places. We conducted several experiments and proved the efficiency of the environment for tele-cooperative work., 11450098
1999 - 2000 - Modeling of soft objects, measurement of elasticity, and real-time virtual system
KANEKO Toyohisa; AOKI Kimiya; HIROTA Koichi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Toyohashi University of Technology, Grant-in-Aid for Scientific Research (C), Generally the objects that Virtual Reality deals with are solid and hard. However, there are many objects that are neither solid nor hard, i.e. soft and deformable objects. This research has been concerned with the approach to deal with such objects. We will define softness and measure the softness of actual soft, deformable objects. Two examples that were investigated are human face and a silicone cube. The softness has been defined as a relation between the force and displacement. To represent a soft object, we employed a spring network model which connects two adjacent nodes with a spring. In order to allocate nodes, we used a bubble mesh method which places equally spaced bubbles in a soft region. The criteria for deciding whether bubbles are connected or not was carried out through the Vornoi Diagram. Then the next problem is how to determine the spring constants of the model. We vary spring constants until the identical relation between force and displacement are obtainable between the real soft object and the virtual object. We constructed a specially designed system for measuring softness which consists of a laser displacement device and a force measurement device. To identify the spring constant, we set it to be identical locally. We set five measuring points on the silicone cube and nine points on a human face. After successful measurement of softness, we built a virtual reality system on a PC with a force feedback device, a PHANToM.It has been found that this system is able to give us an illusion of touching the silicone cube and the human face. It is expected that this system will open a new avenue for expanding the field of VR to treat soft objects., 10680403
1998 - 2000 - 3D Simulation of Facial Cancer Surgey
KANEKO Toyohisa; SEKIGUCHI Ryuzo; MORIYAMA Noriyuki; HIROTA Koichi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Toyohashi University of Technology, Grant-in-Aid for Scientific Research (B), This project aims at prediction of patient's face after removal of facial cancer. There are varieties of cancer on the face and neck. A patient and his/her family are very conscientious of the facial appearance. Therefore it is desirable for them to know how to the appearance will be before actual operation of surgery. For the purpose, we set three research topics : (1) modeling of soft objects such as face and neck, (2) texture acquisition of patient's face, and (3) 3D facial prediction after surgery. For the first topic, we decided to employ a spring network model for simulating soft tissues because its alternative, the finite element method, requires much more computation. Here it is important to determine network structure and spring constants in the model to simulate tissue softness. For the second topics, we decided to use three camera images : a frontal and two side view images since CT images do not contain facial color. For the third topic, the post-surgery appearance is predictable by cutting the springs corresponding to the part where surgery is performed. A system has been constructed for this project. Several results were obtained and shown to doctors involved in the face and neck surgery, East Hospital, National Cancer Center. Good to excellent ratings were given to the results., 09558039
1997 - 1999 - テレイグジスタンスを目的とした対象物変形モデル獲得手法
広田 光一
日本学術振興会, 科学研究費助成事業, 豊橋技術科学大学, 奨励研究(A), これまで、仮想物体の力学的変形モデルのパラメータは恣意的に与えらることが多かった。しかしながら、現実の物体の変形特性を正確に反映するためには、これを計測にもとづいて決定する必要がある。 本研究では、仮想物体の力学的変形モデルを実物体に対する計測にもとづいて生成する手法を提案する。具体的には、現実的な計測自由度のもとで試行的な変形による非破壊的な計測をとおして、力学的変形モデルのパラメータを決定する。また、その実現の可能性についてシミュレーションにより検証する。 変形モデルの生成は、仮想物体変形モデルと実物体とに同一の力を作用し、その際の変形を一致させるように変形モデルの特性パラメータを選び、これによって実物体の変形特性を推定することでおこなう。仮想物体変形モデルとして有限要素法による線形モデルを、同定法として共役勾配法を用いることで、上述の推定を実現した。 実験では、物体の変形特性の計測をシミュレーションにより仮想的に行い、この結果を用いて上述の手法によりパラメータの推定を行った。物体が1、2、64種の材料により構成されている場合について実験をおこない、いずれについても計測に用いたモデルのパラメータにほぼ等しい値を得ることかできることを示した。これにより、提案手法の実現の可能性を確認した。 一方、獲得された変形モデルを実時間で提示する手法に関する検討もおこなった。上述の手法では、仮想物体の変形特性が線形有限要素モデルとして得られる。一般に有限要素モデルは計算量が多く実時間での変形シミュレーションが困難とされてきた。本研究では、指先が物体に対して与える変位境界条件を力境界条件に置き換えることで、全体剛性マトリクスを保存し、あらかじめ計算された逆剛性マトリクスを利用することで実時間の変形と力の提示を実現した。, 09780377
1997 - 1998 - 医療のためのマルチメディア通信システムとそのユーザインタフェース
金子 豊久; 廣田 光一
日本学術振興会, 科学研究費助成事業, 豊橋技術科学大学, 基盤研究(C), 本研究の目的は遠隔地の専門医が仮想現実感・マルチメディア技術を使って正確で効率的なコミュニケーションを行うシステムを構築することである。離れた場所の外科医が特定の患者について胃癌・肝臓癌・腎臓癌などの手術について相談するような場合を想定した。これには,共同研究を行っている国立がんセンター東病院から4名の患者のCTにより得られた3次元画像を用いた。研究の方向は,(1)磁気位置測定装置を用いてメスやナイフを仮想操作するユーザインタフェースシステムの構築,(2)クライアント/サーバ(C/S)を用いた通信システムの構築(3)腹部の臓器を自動確認するアルゴリズムの研究について行った。第3の分野は対象とする臓器の3次元モデルを作る上で各臓器を取り外しの出来るパ-ツとする必要があるためであった。またパ-ツ化した臓器は柔らかい性質を持つようにバネモデルを用いた。(1)と(2)についての成果は日本医用画像工学第15回大会(平成8年7月)で発表した。高橋,廣田,金子:柔らかい臓器の手術シミュレーションである。特に柔らかい物体のモデルについては日本バーチャルリアルティ学会第1回大会で発表した。廣田,金子:柔らかい仮想物体モデルの入力に関する検討。またこうした応用などを含めて金子が電気関係4学会東海支部大会(平成8年11月)でシンポジウム"3次元画像処理の動向-仮想博物館・医療への応用を中心として"の座長を勤めた。学会誌論文としては日本医用画像工学学会誌に"柔らかい臓器を対象とした手術シミュレーション"を投稿した。臓器の自動認識については平成8年度の情報処理学会第53回全国大会で朝木,金子:前処理,後処理を用いた3次元細線化の改良。本研究の結論として言えることは手術シミュレーションの機能を満足させるシステムの構築にはめどがついたが本当の手術に近い感じを与えるための実時間性についてはコンピュータの速度がまだ不十分と言える。, 08680431
1996 - 1996 - 医療のためのマルチメディア通信システムとそのユーザインタフェース
金子 豊久; 廣田 光一
日本学術振興会, 科学研究費助成事業, 豊橋技術科学大学, 一般研究(C), 近年医学の分野では,人間内部臓器を3次元計測する技術の発展が著しい。核磁気共鳴画像(MRI)やコンピュータ断層画像(CT)などが例である。こうした装置から得られた3次元画像を基にして遠隔地にいる複数の外科医が手術についてディスカッションできる通信できるシステムとそのユーザインタフェースを構築することを本研究の目的とした。実施計画に従い我々はまずCTデータを3次元表示するボリュームレンダリング手法の考察を行った。ある程度の高速化が行えたが,基本的に2次元のサーフェースレンダリングよりも遅いので,人間の臓器を毎に分離して,対象としない臓器にはサーフェースレンダリングを行い対象とする臓器はボリュームレンダリングを用いることにした。我々が最も重視したのは臓器のモデルである。ただ画像を見るだけでは無くて我々は外部からの力を許す例えばメスで切ったり手で押さえたり掴んだりできる仮想手術を考えている。臓器を立方体を含む6面体で近似して,その稜線にバネを置くバネモデルを構築した。臓器を切ることはバネを切断することにより行われる。臓器の任意の部分を切ったり引っ張ったりできるユーザインタフェースデバイスとして3次元マウスを用いた。ワークステーションとしては,シリコングラフィックス社のINDYを新しく購入した。現在3次元マウスなど商用のデバイスでなく,この目的に特化した装置を試作中である。さらにこうしたシステムを複数個接続した通信システムの構築を行った。いわゆるクライエントサーバ(C/S)システム方式を採用した。サーバには中核となるCT画像やモデルを置きクライエントにはユーザインタフェース装置と表示を行わせるシステムである。この研究についての発表は,情報処理学会全国2回(51,52回),ユーザインタフェース学会,国際会議MultimediaJapan96の合計4件。投稿中は,国際会議APCHI'96(Singapore,June'96)の1件。 服部,金子:柔らかい臓器の3次元モデル,第51回情報処理学会論文集(2),pp287-288 服部,高橋,廣田,金子:柔らかい臓器の手術シミュレーション,第52回情報処理学会論文集(2),pp215-216, K.Hirota,T.Hattori,T.Kaneko"Implementation of Elastic Object in Virtual Environment",Multimedia Japan 96,March 18-20,1996,Yokohama, 07680426
1995 - 1995
