Updated on 2025/06/11

写真a

 
SEJIMA,Yoshihiro
 
Organization
Faculty of Informatics Professor
Title
Professor
Contact information
メールアドレス
Homepage
http://www2.kansai-u.ac.jp/hri/
External link

Degree

  • 博士（工学） ( 2010.3 )

Research Interests

  • Line-of-sight

  • Social robotics

  • 親近性

  • Human robot interaction

  • Pupil

  • Interactive atmosphere

Research Areas

  • Life Science / Gerontological nursing and community health nursing

  • Informatics / Human interface and interaction

  • Informatics / Intelligent robotics

Education

  • Okayama Prefectural University   Graduate School of Systems Engineering

    2007.4 - 2010.3

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  • Okayama Prefectural University   Graduate School of Systems Engineering

    2005.4 - 2007.3

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  • Okayama Prefectural University   Computer Science and Systems Engineering   Department of System Engineering

    2001.4 - 2005.3

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Research History

  • Kansai University   Faculty of Informatics Department of Informatics   Professor

    2024.4

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    Country：Japan

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  • Kansai University   Faculty of Informatics, Department of Informatics   Associate Professor

    2019.4 - 2024.3

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  • Okayama Prefectural University   Assistant Professor

    2014.4 - 2019.3

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  • Yamaguchi University   Assistant Professor

    2010.4 - 2014.3

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  • 科学技術振興機構 (JST) 戦略的創造研究推進事業 (CREST) 専任RA

    2009.4 - 2010.3

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Professional Memberships

Committee Memberships

  • Transactions of the JSME (in Japanese)   Associate Editor  

    2025.4 - Present   

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    Committee type：Academic society

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  • 日本福祉工学会 第29回学術講演会   大会長  

    2024.11 - Present   

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    Committee type：Academic society

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  • Asia Design and Innovation Conference 2024   Program Committee  

    2024.6 - 2024.12   

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    Committee type：Academic society

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  • Journal of Advanced Mechanical Design, Systems, and Manufacturing, Design & Systems Editorial Committee   Editor  

    2023.4 - Present   

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    Committee type：Academic society

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  • 日本機械学会 設計工学・システム部門 企画活動活性化委員会   幹事  

    2023.4 - Present   

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    Committee type：Academic society

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  • ロボティクス・メカトロニクス部門 技術委員会   幹事  

    2022.4 - 2025.3   

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  • The Japan Society for Welfare Engineering   Board Member  

    2021.11 - Present   

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    Committee type：Academic society

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  • IEEE RO-MAN   IEEE RO-MAN  

    2021.4 - Present   

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    Committee type：Academic society

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  • JSME iDECON/MS   Program Committee  

    2021.4 - Present   

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    Committee type：Academic society

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  •   委員  

    2021.3   

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  • Human Interface Society   幹事  

    2021.3   

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  • Ministry of education   National Institute of Science and Technology Policy  

    2020.4 - Present   

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    Committee type：Government

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  • Human Interface Society   Councilor  

    2020.4 - Present   

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    Committee type：Academic society

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  • ロボティクス・メカトロニクス部門 第4地区技術委員会   委員長  

    2020.4 - 2022.3   

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  • Japan Society for Welfare Engineering   Councilor  

    2019.11 - 2021.11   

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    Committee type：Academic society

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  •   設計工学システム部門 運営委員  

    2018.4   

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  • 日本福祉工学会   論文査読委員会 委員長  

    2018.4   

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    Committee type：Academic society

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  • Human Interface Society   幹事  

    2014.10   

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Papers

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MISC

  • Attention expression method based on viewing distance and binocular disparity in the eye-projection calling robot

    MATSUMOTO Shoki, SEJIMA Yoshihiro

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)   2024   1P2-H05   2024

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    In public spaces, there is a need for information transmission methods that increase self-involvement which treats external information as own business. We focused on the direction of information transmission and developed a eye-projection calling robot to increase self-involvement. This robot can enhance a sense of information transmission through directional speakers and gaze expressions. However, it is not designed with a sense of distance from the target user in this robot. In this study, we focused on the mechanism of human focus adjustment and proposed an attention expression method that generates the pupillary distance to the target user based on viewing distance and binocular disparity.

    DOI： 10.1299/jsmermd.2024.1p2-h05

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  • Effects of Superimposing Self-Shadow on Dilated Pupil in a Twinkling Eyes Interface

    NAKASE Yuta, SEJIMA Yoshihiro, WATANABE Tomio

    The Proceedings of Mechanical Engineering Congress, Japan   2024   S121-03   2024

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    It is known that human affects and emotions are reflected in own eyes. Especially, the eyes with strong affects and emotions such as interest or motivation look like twinkling. People are fascinated and attracted by these twinkling eyes. Therefore, it is expected to examine the elements that fascinate humans and develop social robots for attracting humans by recreating these twinkling eyes using engineering technology. We focused on the reflection of the eyeball surface and developed a twinkling eyes interface by superimposing self-shadow on dilated pupils. This interface can express the pupil response and the shade of self-shadow depending on the distance. In this study, an evaluation experiment that combines self-shadow with dilated pupil was conducted. The effectiveness of the developed interface was demonstrated by sensory evaluations.

    DOI： 10.1299/jsmemecj.2024.s121-03

    DOI： 10.1299/transjsme.24-00241_references_DOI_LZezOfwRAxPWckzqEpAx5sOCZL7

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  • Analysis of activation communication focusing on the number of participants in conversation for controlling group avatar robots

    MORITA Daiki, INAGAKI Saki, SEJIMA Yoshihiro

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)   2024   1P2-H06   2024

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    In online communication such as meetings and classes, many participants can connect anywhere,and any number of people can participate. Although online communication is highly convenient, it is difficult to share a sense of unity and interactive atmosphere because the monitor is perceived as a spatial boundary. In face-to-face communication, nonverbal behaviors such as facial expressions and gestures play an important role in sharing a sense of unity and interactive atmosphere. To improve a sense of unity in remote communication, many avatar robots that represent nonverbal behaviors of remote user have been developed. However, there is no approach in creating interactive atmosphere such as activated communication through nonverbal behavior using multiple avatar robots, because the previous research has assumed a scene where the user and the avatar robot faced each other one-on-one. In this study, for the basic research in realizing smooth communication between human and avatar robots, we focused on the number of participants in remote communication and analyzed the degree of activated communication during free conversation. The results demonstrated that group of 3 was most activated in online communication.

    DOI： 10.1299/jsmermd.2024.1p2-h06

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  • Effects of a Gaze-looking Expression Method During Listening in Pupiloid for Children

    SEJIMA Yoshihiro, HASHIMOTO Shota, WATANABE Tomio

    The Proceedings of Design & Systems Conference   2024.34   1209   2024

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Previous research has been reported that children felt like a close friend and were more likely to self-disclose than other humans when interacting with a social robot. Therefore, it is expected that it will be possible to build close relationships and develop trustworthy robots by introducing an active listening attitude to social robots, as if they were communicating with human. We have previously developed Pupiloid, a speech-driven embodied listening system that expresses an active listening attitude using only the eyes based on the talker's speech. Pupiloid can give the talker a sense of attentive listening by generating nodding movements through eye movement and expressing interest through enlarged pupils. In this study, impression evaluations were conducted for 80 upper elementary school students using the developed system. The experimental results demonstrated that Pupiloid was highly rated for friendliness and the sense of attentive listening, forming positive impressions.

    DOI： 10.1299/jsmedsd.2024.34.1209

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  • A Study on Pupil Variation in Linguistic Order in Insight Problem Solving

    WACHI Kazuma, SEJIMA Yoshihiro

    The Proceedings of Mechanical Engineering Congress, Japan   2024   S121-05   2024

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    The development of product design and interface design requires creative thinking by designers. This creative thinking generates new concepts by externalizing and reinterpreting images through sketching or verbalization. In other words, creative thinking can be viewed as an insight problem. Therefore, it is considered that the cognitive load will differ between solving geometric order such as sketching and solving order such as verbalization. By clarifying this difference, it is expected to obtain guidelines for externalization in creative thinking. In this study, the difference between geometric order and linguistic order in insight problem solving was analyzed by pupil variability. Specifically, we adopted a nine dots issue as a geometric order and a crossword puzzle as a linguistic order. As a result of the analysis, it was confirmed that pupils before solving the insight problem tended to be larger in the linguistic order than in the geometric order.

    DOI： 10.1299/jsmemecj.2024.s121-05

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  • Mirroring effects of pupillary responses in the speech-driven embodied listening system

    HASHIMOTO Shota, SEJIMA Yoshihiro, WATANABE Tomio

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)   2023   1P1-F06   2023

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    It is known that human pupil is related to own affects or interests and becomes more attractive when it is expanded. Focusing on effects of the dilated pupil in human communication and interaction, we analyzed the relationship between the speaker’s speech and his/her own pupil response and confirmed that the pupil dilates in synchronization with the speech. Based on the analysis, we developed the pupil response interface that expresses various pupil responses such as dilated or contracted pupil by speech input. In addition, we developed the speech-driven embodied listening system by mirroring of pupil response in synchronization with the speaker’s speech. This system expresses a positive listening attitude by the pupil response and the nodding response. In this study, we evaluated impressions that the system mirroring the pupillary response acted as a listener. The effectiveness of the system by mirroring the pupil response was demonstrated by sensory evaluations.

    DOI： 10.1299/jsmermd.2023.1p1-f06

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  • Development of an expression method with afterglow in the communication system expressing an interactive atmosphere

    INAGAKI Saki, MORITA Daiki, SEJIMA Yoshihiro

    The Proceedings of Mechanical Engineering Congress, Japan   2023   S121p-01   2023

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Humans often use a metaphor to describe activated communication as a heat. We focused on this metaphor and developed an estimation model for activated interaction and communication by regarding an interactive communication space as a heat conduction in a virtual temperature space. In addition, we developed a communication system that changes the background color based on the model. This system supports sharing an interactive atmosphere even in spatially separated online communication by changing the background color from the black to the warm color. However, when the background color suddenly changes from the warm color to the black, it brings a negative impression of the silence of the conversation. In this study, we developed a new method that expresses the afterglow of the interaction atmosphere in the system. This method generates slowly changing the background color from the warm color to the black when the conversation is finished.

    DOI： 10.1299/jsmemecj.2023.s121p-01

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  • 場の盛り上がり推定モデルを用いた背景色変化による場の雰囲気表現システムの評価—Evaluation of a communication system that expresses interactive atmosphere with changing the background color using interaction-activated communication model—第200回 ヒューマンインタフェース学会研究会 コミュニケーション支援および一般

    稲垣 早紀, 森田 大樹, 瀬島 吉裕

    ヒューマンインタフェース学会研究報告集   25   283 - 288   2023

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    Language：Japanese   Publisher：[京都] : ヒューマンインタフェース学会  

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    Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I033504355

  • Evaluation of an avatar robot with interactive atmosphere in online communication

    INAGAKI Saki, MORITA Daiki, SEJIMA Yoshihiro

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)   2023   1A1-D03   2023

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Online communication can be realized even in remote areas by sending and receiving mutual images and voices in real time. However, in such online communication, it is difficult to share a sense of unity and interactive atmosphere because the monitor is perceived as a spatial boundary. Therefore, we developed an avatar robot that incorporates an estimation model which simulates the degree of activated interaction from the speaker’s speech. The developed avatar robot expresses an interactive atmosphere by changing its facial color based on the estimated value. In this study, we evaluated the avatar robot under the condition that the avatar robot acts as the remote talker. The effectiveness of this avatar robot was demonstrated by sensory evaluations.

    DOI： 10.1299/jsmermd.2023.1a1-d03

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  • An attempt to present group-activated communication with the Ebbinghaus illusion for idea generation

    MORITA Daiki, INAGAKI Saki, SEJIMA Yoshihiro

    The Proceedings of Design & Systems Conference   2023.33   2308   2023

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    As the saying goes, “Two minds are better than one”, group communication can generate more ideas than individual thinking. To generate good ideas, a good relationship in a group as well as an activated and smooth interaction are essential during group communication. Previous research proposed many idea generation systems that are intervened directly in the idea during group communication. However, an approach to indirectly support idea generation by enhancing group communication has not been sufficiently examined. In this study, we constructed a system that visually presents the activation level in group communication. This system is projected the Ebbinghaus illusion on a desk and designed to change it based on the activation level that estimated using our group-activated communication model. The effectiveness of the system demonstrated by sensory evaluations.

    DOI： 10.1299/jsmedsd.2023.33.2308

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  • 人を惹き込むコミュニケーションシステム「かかわりEye」の紹介

    瀬島 吉裕

    情報研究 = Journal of informatics : 関西大学総合情報学部紀要 / 関西大学総合情報学部 編   ( 55 )   25 - 32   2022.7

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    Language：Japanese  

    CiNii Books

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  • 信頼性評価のための目元の微細表現を生成するCGキャラクタシステムの開発—Development of a CG character system that generates micro expressions of eye area for reliability evaluation—第190回ヒューマンインタフェース学会研究会 コミュニケーション支援および一般

    瀬島 吉裕, 小泉 七星

    ヒューマンインタフェース学会研究報告集   24   187 - 192   2022

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    Language：Japanese   Publisher：[京都] : ヒューマンインタフェース学会  

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    Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I033693588

  • Affect Displays with Color Expression of Teardrop in the Teary-eyed Robot

    SEJIMA Yoshihiro, KINOMOTO Daiki, WATANABE Tomio

    The Proceedings of Mechanical Engineering Congress, Japan   2022   J151-09   2022

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Human tears have an effect as an empathic signal that visually conveys evoked strong affects or emotions to them. We focused on human tears as an expression method with strong affects or emotions and developed a teary-eyed robot called Tearoid. Tearoid has the structure of mimicking human lacrimal apparatus and generates the teardrops by controlling the inflow of tears. However, the affect displays of the kinds for the teardrops with various affects or emotions were not examined so far. Therefore, if the robot’s affects or emotions can be inferred from various teardrops, it becomes a new empathic expression for humanoid robots. In this study, we proposed new affect displays that enhance affective expressions by adding color to the teardrops that flow into the Tearoid. It was confirmed that the colored teardrops express various affects or emotions even if the facial expressions do not change.

    DOI： 10.1299/jsmemecj.2022.j151-09

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  • オンラインコミュニケーションにおける背景色の動的変化による雰囲気表現法の開発—Development of a method to express the atmosphere by dynamically changing the background color in online communication—知覚情報研究会・VR心理,複合現実型実応用および一般

    稲垣 早紀, 森田 大樹, 井上 遼介, 松本 康希, 瀬島 吉裕

    電気学会研究会資料. PI = The papers of Technical Meeting on "Perception Information", IEE Japan, / 知覚情報研究会 [編]   2021 ( 31-45 )   5 - 9   2021.8

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    Language：Japanese   Publisher：電気学会  

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  • Development of an interaction-activated communication model with eye-gaze in voice communication

    SEJIMA Yoshihiro, OKAMOTO Ryohei, WATANABE Tomio

    The Proceedings of Design & Systems Conference   2021.31   2401   2021

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    In human communication, nonverbal behaviors such as facial expression, body movement, eye-gaze, and pupil response play an important role in realizing activated interaction and communication. In our previous study, an activated interaction through avatars was analyzed, and an estimation model for the activated interaction was developed by introducing the concept of heat-transfer engineering. This model estimates the amount of heat in the communication field as the degree of the activated interaction based on an assumption that each talker's heat is transmitted to the communication field. However, it is hard to estimate interactions including the conveyance of eye-gaze because the model has no parameter of the eye-gaze. It is important to share the conveyance of mutual eye-gaze for producing the activated interaction in voice communication. Therefore, it is expected to develop a model that estimates the conveyance of eye-gaze. In this paper, focusing on eye-gaze which plays an important role in producing the activated interaction, we developed a model that estimates the degree of conveyance by the talker’s eye-gaze in voice communication. This model estimates the degree of the interaction-activated communication as heat transfer by combining the speech input and the eye-gaze input.

    DOI： 10.1299/jsmedsd.2021.31.2401

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  • Development of a Speech-Driven Pupil Response Pet-Robot for Promoting Self-Disclosure

    OKUBO Kiho, SEJIMA Yoshihiro

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)   2021   1P3-E03   2021

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Dilated pupils make favorable impression. Focusing on the benefits of the dilated pupils, we have developed a pupil response pet-robot for improving familiarity. This robot can enhance familiarity by enlarging pupils in synchronization with the body contact. In this study, focusing on creating an atmosphere that makes it easy to talk with the pet-robot for promoting self-disclosure during communication, we investigated the size of the pupils that give favorable impression with or without speech input. Based on the experimental results, we developed a speech-driven pupil response pet-robot that generates both a clearly enlarged pupil response and a blink that is synchronized with the speech rhythm.

    DOI： 10.1299/jsmermd.2021.1p3-e03

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  • Impressions for the Difference of Pupillary Area in the Media of Pupil Expression

    SEJIMA Yoshihiro, KAWAMOTO Hiroki, SATO Yoichiro, WATANABE Tomio

    The Proceedings of Design & Systems Conference   2020.30   2409   2020

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Pupils are related to own affect and give favorable impressions to others depending on their size. Focusing on effects of the pupil size, various pupil sizes were evaluated using human images as stimulations in previous researches. However, it is difficult to generate extreme pupil size in human images, and the evaluation of pupil size itself is difficult because the impressions of human images are formed depending on not only pupil sizes but also other facial parts. To evaluate the impressions of the pupil size itself, it is desirable to extract only the pupil and exclude other facial parts. In this study, we analyzed the impressions on various pupil sizes that combined the dilation / contraction using two kinds of pupil expression media that have been developed. The analysis results demonstrated that a certain dilated area of pupil has a potential to form favorable impressions regardless of pupil expression media.

    DOI： 10.1299/jsmedsd.2020.30.2409

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  • Development of an interface with twinkling eyes by superimposing self-shadows on pupils

    SEJIMA Yoshihiro, NISHIDA Makiko, WATANABE Tomio

    The Proceedings of Mechanical Engineering Congress, Japan   2020   S12101   2020

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    DOI： 10.1299/jsmemecj.2020.s12101

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  • Development of a teary-eyed robot that displays emotional empathy

    SEJIMA Yoshihiro, WATANABE Tomio

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)   2020   1A1-F03   2020

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Empathy is very important in the enhancement of rapport, and broadly divided into emotional empathy and cognitive empathy. However, there are few approaches to expressing emotional empathy that can be understood intuitively. In this study, we designed and developed a teary-eyed for displaying emotional empathy during human-robot interaction. This robot mimics the human lacrimal structure, and can generate teary eye by controlling the inflow of water. The effectiveness of the teary-eyed was confirmed experimentally.

    DOI： 10.1299/jsmermd.2020.1a1-f03

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  • Minimal Design of Pupil Responses in Eye-Communication

    54 ( 11 )   723 - 728   2019.11

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    Language：Japanese  

    CiNii Books

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  • Efficient Visualization Method of Tube Diameter Based on Center Coordinates and its History

    上田満, 近藤真史, 茅野功, 瀬島吉裕, 佐藤洋一郎, 杉原雄策, 松本和幸

    電子情報通信学会技術研究報告   118 ( 412(MI2018 59-115)(Web) )   165‐168 (WEB ONLY)   2019.1

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    Language：Japanese  

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  • Effects of Difference in Pupillary Area on Impressions in the Pupil Response Interface

    21   9 - 14   2019

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    Language：Japanese  

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  • An embodied communication system with avatar‐shadow’s color expressions based on an interaction‐activated communication model in voice communication

    瀬島吉裕, 石井裕, 渡辺富夫

    日本機械学会論文集(Web)   85 ( 873 )   ROMBUNNO.18‐00074(J‐STAGE) - 18-00074   2019

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Shadows play an important role in the effects of three-dimension and the enhancement of reality in virtual space. On the other hand, addition of color change in human interaction and communication is effective for enhancing expressions such as affects and interactions. Therefore, by changing the color of avatar’s shadows based on the interaction, it is expected to activate and enhance an avatar-mediated interaction and communication. In this study, focusing on the effects of avatar-shadow’s color, we develop an embodied communication system which expresses the change of avatar-shadow color based on an interaction-activated communication model. The model estimates activation levels of embodied communication based on speech input, and the color of avatar-shadow is changed on the basis of the estimated values. A communication experiment is performed with 12 pairs of participants to evaluate the system. The results of the sensory evaluation demonstrate that the color expressions of avatar-shadow are effective for visualizing embodied interaction and communication.

    DOI： 10.1299/transjsme.18-00074

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  • ソーシャルロボットにおける時間的眼色変化を伴う感情表現に対する色覚多様性者の印象評価

    瀬島吉裕, 佐藤洋一郎

    日本福祉工学会学術講演会講演論文集   22nd   125‐126   2018.11

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    Language：Japanese  

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  • 複数の組み込みプロセッサとGPUを併用した俯瞰画像合成システムの開発

    田所勇生, 近藤真史, 瀬島吉裕, 佐藤洋一郎, 河本崇幸, 石原洋之

    情報科学技術フォーラム講演論文集   17th   119‐120   2018.9

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  • 医用画像における管状組織を対象とした管径可視化システムの開発

    上田満, 近藤真史, 茅野功, 瀬島吉裕, 佐藤洋一郎, 杉原雄策, 松本和幸

    情報科学技術フォーラム講演論文集   17th   333‐334   2018.9

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  • 対面における身体接触を伴う共感表現を付加した瞳孔反応システムの開発

    瀬島吉裕, 前田涼介, 長谷川大地, 佐藤洋一郎, 渡辺富夫

    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)   2018   ROMBUNNO.1P2‐F11   2018.6

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  • A Recursive Approximation Approach of Projective Transformation for Free-Viewpoint Cameras

    田所勇生, 近藤真史, 瀬島吉裕, 佐藤洋一郎

    電子情報通信学会技術研究報告   117 ( 400(CAS2017 109-132) )   45‐50   2018.1

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  • コミュニケーションロボットのための時間的眼色変化を付加した感情表現

    瀬島吉裕, 佐藤洋一郎

    日本感性工学会大会予稿集(CD-ROM)   20th (Web)   ROMBUNNO.P‐44 (WEB ONLY)   2018

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  • Analysis of Impressions on Color Vision Variation for Attentional Color in Dynamic Information Presentation

    瀬島 吉裕, 滝本 裕則, 佐藤 洋一郎, 神代 充

    日本福祉工学会誌   20 ( 1 )   27 - 34   2018

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  • 深層ニューラルネットワークを用いた外観的“かわいい”の定量的評価

    長谷川大地, 瀬島吉裕, 田所勇生, 前田涼介, 佐藤洋一郎

    日本感性工学会大会予稿集(CD-ROM)   20th (Web)   ROMBUNNO.F5‐01 (WEB ONLY)   2018

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  • 複数ロボットからの画像を集約する多方向画像共有システムの開発

    太田俊介, 瀬島吉裕, 福田忠生, 山内仁, 保田俊行, 神代充

    計測自動制御学会システムインテグレーション部門講演会(CD-ROM)   18th   ROMBUNNO.2C1‐04   2017.12

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  • 動的情報提示における注目色の速度変化に対する色覚多様性者の印象評価

    瀬島吉裕, 滝本裕則, 佐藤洋一郎, 神代充

    日本福祉工学会学術講演会講演論文集   21st   71‐72   2017.11

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  • 場の盛り上がり推定モデルに基づく身体的アバタ影色表現システム

    瀬島吉裕, 石井裕, 渡辺富夫

    日本機械学会設計工学・システム部門講演会論文集(CD-ROM)   27th   ROMBUNNO.1208   2017.9

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    Shadows are usually natural and unintentional in real space. In virtual space, they play an important role in threedimensional effects and the perceived reality of the virtual space. An avatar’s shadow can have interactive effects with the avatar itself in the virtual space. In this study, we develop an embodied avatar system using avatar-shadow color expressions with an interaction-activated communication model. This model is based on the heat conduction equation in heat-transfer engineering, and has been developed to enhance empathy during embodied interaction in avatar-mediated communication. A communication experiment is performed with 12 pairs of participants to confirm the effectiveness of the system. The results of the sensory evaluation show that interaction activation is visualized by changing avatar-shadow color.

    DOI： 10.1299/jsmedsd.2017.27.1208

    DOI： 10.1299/transjsme.18-00074_references_DOI_TGEBDAH2JPCJEE5r7nEWyyRoMZl

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  • 半球ディスプレイを用いた瞳孔反応インタフェース

    江川翔一, 瀬島吉裕, 前田涼介, 佐藤洋一郎, 渡辺富夫

    日本機械学会設計工学・システム部門講演会論文集(CD-ROM)   27th   ROMBUNNO.1205   2017.9

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  • スポーツビジョンと運動系を統合した周辺視野トレーニングシステムの開発

    瀬島吉裕, 岡本拓也, 江川翔一, 前田涼介, 佐藤洋一郎

    日本機械学会設計工学・システム部門講演会論文集(CD-ROM)   27th   ROMBUNNO.1207   2017.9

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  • 発話呼気に同期する瞳孔CGモデルを瞳孔に重畳合成したビデオチャットシステムの開発

    前田涼介, 江川翔一, 瀬島吉裕, 佐藤洋一郎, 渡辺富夫

    日本機械学会設計工学・システム部門講演会論文集(CD-ROM)   27th   ROMBUNNO.2607   2017.9

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  • 熱伝導方程式に基づく発話呼気に同調する瞳孔反応生成モデルの開発

    瀬島吉裕, 江川翔一, 前田涼介, 佐藤洋一郎, 渡辺富夫

    日本機械学会年次大会講演論文集(CD-ROM)   2017   ROMBUNNO.S1210107   2017.9

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  • A method of reducing amount of operations on the bit serial multiply-accumulator and its application

    岡本 大地, 近藤 真史, 瀬島 吉裕, 横川 智教, 有本 和民, 佐藤 洋一郎

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   116 ( 96 )   35 - 40   2016.6

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  • A speech-driven embodied entrainment character system for supporting line-of-sight interaction using an interaction-activated communication model

    SEJIMA Yoshihiro, ONO Koki, WATANABE Tomio

    Transactions of the JSME (in Japanese)   82 ( 842 )   16 - 00114-16-00114   2016

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    <p>Line-of-sight such as gaze and eye-contract plays an important role to enhance the embodied interaction and communication through avatars. In addition, many eyeball movement models and communication systems using avatars with the line-of-sight have been proposed and developed. However, these eyeball movements by generating the above-mentioned models were not considered to enhance the embodied interaction such as activated communication, because the models stochastically generate the eyeball movements based on the human gaze behavior. Therefore, in order to enhance and promote the embodied interaction from the view point of line-of-sight, it is desired to design a line-of-sight interaction which relates to the interaction-activated communication. In this study, we analyze the interaction between human gaze behavior and the interaction-activated communication by using an embodied communication system with line-of-sight measurement devices. Then, we propose a line-of-sight model based on the above-mentioned analysis, and develop an advanced embodied communication system by applying the proposed model to the speech-driven embodied entrainment character. This system generates the eyeball movements such as gaze and looking away based on the proposed model, and provides a communication environment wherein the embodied interaction is promoted. The effectiveness of the system is demonstrated by means of sensory evaluations of 15 pairs of subjects involved in avatar-mediated communication.</p>

    DOI： 10.1299/transjsme.16-00114

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  • 動的情報提示における注目色に対する色覚特性者の印象評価

    瀬島吉裕, 滝本裕則, 佐藤洋一郎

    日本感性工学会大会予稿集(CD-ROM)   18th   2016

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  • A bit serial multiply and accumulator with negative number operation

    岡本 大地, 近藤 真史, 瀬島 吉裕

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   115 ( 316 )   115 - 120   2015.11

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  • A bit serial multiply and accumulator with negative number operation

    岡本 大地, 近藤 真史, 瀬島 吉裕

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   115 ( 315 )   115 - 120   2015.11

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  • An Attempt of PBL Education Using Delivery Gymnastic Experiment by Regional Collaboration

    SEJIMA Yoshihiro, YAMAUCHI Hitoshi, MATSUI Toshiki, SATO Yoichiro, TAKASUGI Seiji

    Journal of JSEE   63 ( 5 )   5_122 - 5_127   2015

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    DOI： 10.4307/jsee.63.5_122

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  • 1110 Development of an Embodied Communication System with Line-of-Sight Model for Speech-Driven Embodied Entrainment Character

    SEJIMA Yoshihiro, ONO Koki, YAMAMOTO Mayo, ISHII Yutaka, WATANABE Tomio

    The Proceedings of Design & Systems Conference   2015 ( 0 )   _1110 - 1_-_1110-9_   2015

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    We have already analyzed enhanced interaction through avatars using an embodied virtual communication system and proposed an interaction-activated communication model based on the heat conduction equation. In this paper, we analyzed the interaction between the talker's gaze and the degree of interaction-activated communication in face-to-face communication, by using an embodied communication system with a line-of-sight measurement device. On the basis of this analysis, we proposed a line-of-sight model, which consists of an eyeball delay movement model and a look away model. Then, we developed an advanced communication system in which the proposed model is applied to speech-driven embodied entrainment character for enhancing embodied interaction and communication. This system generates the eyeball movement on the basis of the proposed model by using the speech input alone to realize smooth and enjoyable interaction and communication.

    DOI： 10.1299/jsmedsd.2015.25._1110-1_

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  • Assessing the Educational Effectiveness of Human Resource Development Education with Information System Engineers through a Rescue Robot Contest

    FUKUTA Tadao, SEJIMA Yoshihiro, OBUNAI Kiyotaka, YAMAUCHI Hitoshi, MATSUI Toshiki

    Journal of JSEE   63 ( 5 )   5_87 - 5_92   2015

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    Project-based learning (PBL) is effective for teaching students about the engineering design process, as it leads to higher educational effectiveness among lower-grade students. In this paper, we introduced an original PBL program that involved the use of an autonomous mobile robot in a rescue robot contest, and we assessed its educational effectiveness among several categories of students who participated in the contest. The results demonstrated that essential abilities for information engineering could be acquired by participating in the contest, and both the PBL program and contest provided a good educational environment for lower-grade students.

    DOI： 10.4307/jsee.63.5_87

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  • Development of an Eye Contact Measurement System for Quantitative Evaluation of Mental Health

    瀬島 吉裕, 長 篤志, 神代 充

    日本福祉工学会誌   17 ( 1 )   11 - 19   2015

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    Other Link： http://search.jamas.or.jp/link/ui/2017235199

  • The task dependence in left and right deviation of gazing time and application for a remote education support system

    Tanabe Makoto, Sejima Yoshihiro, Yamamoto Masayuki, Osa Atsushi

    ITE Technical Report   38 ( 0 )   13 - 16   2014

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    A previous study reported that the lecturer's avatar of a remote education communication support system with a group gaze model which, the avatar gazed the audience at a rate of 13% right, 60% center, 27% left in the virtual classroom, could provide effectiveness for group interaction and communication, especially sense of unity. We believe that a reason of the result is explained by an experimental result, lecturer in the real class room gazes longer duration to the left side than to the right side. In this study, we investigated relationship between duration time of gazing and experimental tasks assigned to the participants. Results show that gazing time depends on the experimental tasks, and two tasks brought left and right deviation. Furthermore, we discussed the reason that the group gaze model can improve the sense of unity in the virtual class room.

    DOI： 10.11485/itetr.38.10.0_13

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    Other Link： http://www.lib.yamaguchi-u.ac.jp/yunoca/handle/2014010498

  • 3A04 Development of Fundamental Competencies for Working Persons by Creative Design Education Program

    SAKIYAMA Satoshi, OKADA Hideki, Sejima Yoshihiro, KIKUMA Yoshie, Miura Fusanori

    Proceedings of Annual Conference of Japanese Society for Engineering Education   2014 ( 0 )   420 - 421   2014

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    DOI： 10.20549/jseeja.2014.0_420

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  • Novel Educational Project for Science and Technology developed in Yamaguchi Prefecture

    SAKIYASMA Satoshi, OKADA Hideki, SEJIMA Yoshihiro, MIURA Fusanori

    Proceedings of the Annual Meeting of Japan Society for Science Education   37 ( 0 )   172 - 173   2013

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    DOI： 10.14935/jssep.37.0_172

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  • An interaction-activated communication support system using a virtual audience with an estimated model of conversational activity Reviewed

    Yoshihiro Sejima, Tomio Watanabe, Yutaka Ishii

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   79 ( 807 )   4095 - 4107   2013

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    DOI： 10.1299/kikaic.79.4095

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  • 9-336 Development of a Measurement System Estimating Degree of Concentration Based on Head Direction Using Image Processing

    SEJIMA Yoshihiro, OKADA Hideki, SAKIYAMA Satoshi, MIURA Fusanori

    Proceedings of Annual Conference of Japanese Society for Engineering Education   2013 ( 0 )   680 - 681   2013

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    DOI： 10.20549/jseeja.2013.0_680

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  • A speech-driven embodied group entrained system with an eyeball movement model for lecturer character Reviewed

    Yoshihiro Sejima, Tomio Watanabe, Mitsuru Jindai, Atsushi Osa

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   79 ( 799 )   827 - 836   2013

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    DOI： 10.1299/kikaic.79.827

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    Other Link： http://www.lib.yamaguchi-u.ac.jp/yunoca/handle/2013010010

  • The Effects of CG Characters' Physical Characteristics and Background on Impression Formation:- Examination based on Repeated Exposure -

    MATSUDA Ken, KUSUMI Takashi, SEJIMA Yoshihiro

    Transactions of Japan Society of Kansei Engineering   12 ( 1 )   67 - 75   2013

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    We investigated the effects of pre-preferences for CG characters (avatar), gender of CG characters, exposure frequency, and the concordance between CG characters and the background on the impression formed about CG characters. During 8 sessions, 36 participants were shown a succession of CG characters presented against concordant or discordant backgrounds. During sessions 1, 3, 5, and 7, participants evaluated each CG character in terms of post-preference, intelligence, and reliability using a 7-point scale. Session 8 involved a delay condition. The results showed that post-preference evaluation scores in the high pre-preference condition were associated with better first impressions of CG characters, and increased with exposure frequency. However, background conformity influenced the impressions of CG characters when pre-preferences were medium or low. In addition, post-preference and reliability evaluation scores were higher for female than male characters.

    DOI： 10.5057/jjske.12.67

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  • 3202 Development of an Eye-Contact Measurement System Using a Dichroic Mirror in Face-to-Face Communication

    SEJIMA Yoshihiro, ZUSHI Yukari, OSA Atsushi, WSTANABE Tomio, JINDAI Mitsuru

    The Proceedings of Design & Systems Conference   2013 ( 0 )   _3202 - 1_-_3202-6_   2013

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    We have developed a speech-driven embodied entrainment characters with eyeball movement model, which consists of an eyeball delay movement model and a gaze withdrawal model. This characters can support the embodied interaction and communication in avatar mediated communication and demonstrate that the line-of-sight plays an important role in enhancing the embodied interaction and communication. In this paper, we propose a concept of eye-contact measurement method and develop an eye-contact measurement system using a dichroic mirror m face-to-face communication for enhancing the embodied interaction and communication. In this system, a dichroic mirror which has a function that transmits visible rays, and reflects infrared rays is arranged between two talkers as a virtual display, and the gaze points on the virtual display are estimated. When the estimated gaze points are present m the eye area of opposite talker, an eye-contact is established in face-to-face communication.

    DOI： 10.1299/jsmedsd.2013.23._3202-1_

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  • S121013 Development of an Interaction-activated Communication Modelb Based on the Heat Conduction Equation in Voice Communication

    SEJIMA Yoshihiro, KONISHI Hirofumi, WATANABE Tomio, JINDAI Mitsuru

    The Proceedings of Mechanical Engineering Congress, Japan   2013 ( 0 )   _S121013 - 1-_S121013-4   2013

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    Previously, we developed an embodied virtual communication system for human interaction analysis by synthesis in avatar-mediated communication and confirmed that the speech-overlap between talkers is closely related with the period in which embodied interaction and communication is activated through their avatars. In this paper, we propose an interaction-activated communication model based on the heat conduction equation for enhancing embodied interaction in avatar-mediated communication. Further, we perform the evaluation experiment and demonstrate that the proposed model is effective for estimating the period of interaction-activated communication in avatar-mediated communication.

    DOI： 10.1299/jsmemecj.2013._S121013-1

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  • RO-MAN 2012

    瀬島 吉裕

    ヒューマンインタフェース学会誌 = Journal of Human Interface Society : human interface   14 ( 4 )   320 - 320   2012.11

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  • 7-324 A Curriculum of Creativity Education in Design Engineering for Developing Manufacturing Mind

    SEJIMA Yoshihiro, KANEMORI Kaoru, SAKIYAMA Satoshi, MIURA Fusanori

    Proceedings of Annual Conference of Japanese Society for Engineering Education   2012 ( 0 )   676 - 677   2012

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    DOI： 10.20549/jseeja.2012.0_676

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  • A speech-driven embodied group entrainment system with the model of lecturer's eyeball movement Reviewed

    Yoshihiro Sejima, Tomio Watanabe, Mitsuru Jindai, Atsushi Osa, Yukari Zushi

    Proceedings - IEEE International Workshop on Robot and Human Interactive Communication   2012 ( 0 )   1086 - 1091   2012

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    DOI： 10.1109/ROMAN.2012.6343893

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  • 1G3-G5 Development of educational system for science by regional collaboration (II)

    SAKIYAMA Satoshi, HAYAKAWA Seiji, OKADA Hideki, SEJIMA Yoshihiro, MIURA Fusanori

    Proceedings of the Annual Meeting of Japan Society for Science Education   36 ( 0 )   353 - 354   2012

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    DOI： 10.14935/jssep.36.0_353

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  • A virtual audience system by using a speech-driven embodied entrainment picture for supporting avatar-mediated communication Reviewed

    Yoshihiro Sejima, Yutaka Ishii, Tomio Watanabe

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   78 ( 786 )   523 - 534   2012

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    DOI： 10.1299/kikaic.78.523

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  • Effects of Delayed Presentation of Self-Embodied Avatar Motion with Network Delay

    ISHII Yutaka, SEJIMA Yoshihiro, WATANABE Tomio

    The Transactions of Human Interface Society   13 ( 1 )   23 - 30   2011.2

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    <p>A large network delay is likely to obstruct human interaction in telecommunication systems such as telephony or video conferencing systems. In spite of the extensive investigations that have been carried out on network delays of voice and image data, there have been few studies regarding support for embodied communication under the conditions of network delay. To maintain smooth human interaction, it is important that the various ways in which delay is manifested are understood. We have already developed an embodied virtual communication system that uses an avatar called "VirtualActor," in which speakers who are remotely located from one another can share embodied interaction in the same virtual space. Responses to a questionnaire that was used in a communication experiment confirmed that a fixed 500-ms network delay has no effect on interactions via VirtualActors. In this paper, we propose a method of presenting a speaker's voice and an avatar's motion feedback in the case of a 1.5-s network delay using VirtualActors. We perform two communication experiments under different conditions of network delay. The aim of the first experiment is to examine the effect of a random time delay on the conversation. The second experiment is conducted under the conditions of a free-form conversation that takes place in 5 scenarios-1 real-time scenario without a network delay and 4 scenarios with network delay that involve a combination of a delay in the talker's voice and in his/her avatar's motion feedback. The subjects consisted of a total of 30 students who worked in 15 pairs and who were familiar with each other. A sensory evaluation shows the effects upon communication of delays in the avatar's motion feedback, from the viewpoint of supporting the interaction.</p>

    DOI： 10.11184/his.13.1_23

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  • 10-328 Development of Regional Cooperation Network for Science Education

    SAKIYAMA Satoshi, OKADA Hideki, SEJIMA Yoshihiro, MIURA Fusanori

    Proceedings of Annual Conference of Japanese Society for Engineering Education   2011 ( 0 )   678 - 679   2011

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    DOI： 10.20549/jseeja.2011.0_678

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  • 3107 Development of a Speech-driven Embodied Group Entrainment System with an Eyeball Movement Model for Lecturer Character

    SEJIMA Yoshihiro, WATANABE Tomio, JINDAI Mitsuru, OSA Atsushi

    The Proceedings of Design & Systems Conference   2011 ( 0 )   525 - 528   2011

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    We have already developed a speech-driven embodied group entrained communication system called "SAKURA" for activating group interaction and communication in which speech-driven CG characters called InterActors with both functions of speaker and listener by generating communicative actions and motions are entrained one another as a teacher and some students in the same virtual classroom. In this paper, we analyze the eyeball movement of lecturer in group communication, by using an embodied communication system with a line-of-sight measurement device. On the basis of this analysis, we propose an eyeball movement model, which consists of an saccade model and a group gaze model. Then, we develop an advanced communication system in which the proposed eyeball movement model is applied to a speech-driven embodied group entrained communication system. The communication system generates the eyeball movement of lecturer on the basis of the model, and it generates the head and body entrained motions of characters by using the speech input alone. The system would be effective for group embodied interaction and communication as well as remote interaction and communication support.

    DOI： 10.1299/jsmedsd.2011.21.525

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  • 1G3-F1 Development of educational system for science by regional collaboration

    SAKIYAMA Satoshi, OKADA Hideki, SEJIMA Yoshihiro, MIURA Fusanori

    Proceedings of the Annual Meeting of Japan Society for Science Education   35 ( 0 )   265 - 266   2011

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    本研究の最終目標は、地域社会構成員が互いに協働することで、明日の科学技術日本を担う理系人材を効果的に育成する手法を開発することである。ここではまずその第1歩として、山口県下の産学公民が連携した新しい科学教育システムの構築を目的とし、展開した長州科楽維新プロジェクトについて述べる。さらに、このような教育システムの構築、維持に有用な役割を果たす要因について検討する。

    DOI： 10.14935/jssep.35.0_265

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  • An embodied communication system using speech-driven embodied entrainment characters with an eyeball movement model Reviewed

    Yoshihiro Sejima, Tomio Watanabe, Mitsuru Jindai

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   76 ( 762 )   340 - 350   2010.2

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    DOI： 10.1299/kikaic.76.340

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  • 3-334 Development of Science Education for Primary School Students and Junior High School Students

    SAKIYAMA Satoshi, OKADA Hideki, SEJIMA Yoshihiro, MIIKE Hidetoshi, MIURA Fusanori

    Proceedings of Annual Conference of Japanese Society for Engineering Education   2010 ( 0 )   528 - 529   2010

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    DOI： 10.20549/jseejaarc.2010.0_528

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  • S1201-2-4 Development of an Enhanced Interaction Support System Based on a Model Estimating Conversational Activity

    Sejima Yoshihiro, Ishii Yutaka, Watanabe Tomio

    The proceedings of the JSME annual meeting   2010 ( 0 )   15 - 16   2010

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    We have developed an embodied virtual communication system called EVCOS for human interaction analysis by synthesis. In this paper, focusing on the speech-overlap in enhanced interaction, the characteristics are analyzed in the virtual face-to-face communication using EVCOS, and a model estimating conversational activity on the basis of the analysis is proposed. In addition, an enhanced interaction support system is developed by applying the proposed model to an interactive wall as a virtual audience.

    DOI： 10.1299/jsmemecjo.2010.4.0_15

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  • Analysis by synthesis of embodied communication via virtualactor with a nodding response model Reviewed

    Yoshihiro Sejima, Tomio Watanabe, Michiya Yamamoto

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   75 ( 758 )   2773 - 2782   2009.10

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  • Transmission Timing Sharing of Talker's own voice and motion in Embodied Avatar Mediated Interaction under the Network Delay

    ISHII Yutaka, SEJIMA Yoshihiro, WATANABE Tomio

    Human Interface   11 ( 2 )   75 - 80   2009.5

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  • Transmission Timing Sharing of Talker's own voice and motion in Embodied Avatar Mediated Interaction under the Network Delay

    ISHII Yutaka, SEJIMA Yoshihiro, WATANABE Tomio

    IEICE technical report   109 ( 27 )   75 - 80   2009.5

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    Language：Japanese   Publisher：The Institute of Electronics, Information and Communication Engineers  

    A large network delay would obstruct human interaction using telecommunication systems such as telephony or video conference. Studies on the embodied communication support in the network delay condition have been little undertaken despite considerable investigations of the network delay of voice and image data. It is important that the ways of revealing the delay are discussed for smooth human interaction. We have already developed an embodied virtual communication system using an avatar called "VirtualActor" in which remote talkers can share embodied interaction in the same virtual space. It has been confirmed that the fixed 500ms network delay has no effects on interaction via VirutalActors in the questionnaire in the communication experiment. In this paper, we propose the presentation method of talker's voice and avatar's motion feedback in the 1.5s network delay condition by using VirtualActors. The communication experiment is performed under the conditions of a free conversation by 5 scenes; the real-time scene without the network delay, and the 4 remained network-delay scenes for the combination of the delay of the talker's voice and his/her avatar's motion feedback. The subjects consisted of a total of 15 pairs of 30 students who are familiar with each other. Sensory evaluation shows communication effects of the delay of avatar's motion feedback on interaction support.

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  • Transmission Timing Sharing of Talker's own voice and motion in Embodied Avatar Mediated Interaction under the Network Delay

    ISHII Yutaka, SEJIMA Yoshihiro, WATANABE Tomio

    IEICE technical report   109 ( 28 )   75 - 80   2009.5

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    Language：Japanese   Publisher：The Institute of Electronics, Information and Communication Engineers  

    A large network delay would obstruct human interaction using telecommunication systems such as telephony or video conference. Studies on the embodied communication support in the network delay condition have been little undertaken despite considerable investigations of the network delay of voice and image data. It is important that the ways of revealing the delay are discussed for smooth human interaction. We have already developed an embodied virtual communication system using an avatar called "VirtualActor" in which remote talkers can share embodied interaction in the same virtual space. It has been confirmed that the fixed 500ms network delay has no effects on interaction via VirutalActors in the questionnaire in the communication experiment. In this paper, we propose the presentation method of talker's voice and avatar's motion feedback in the 1.5s network delay condition by using VirtualActors. The communication experiment is performed under the conditions of a free conversation by 5 scenes; the real-time scene without the network delay, and the 4 remained network-delay scenes for the combination of the delay of the talker's voice and his/her avatar's motion feedback. The subjects consisted of a total of 15 pairs of 30 students who are familiar with each other. Sensory evaluation shows communication effects of the delay of avatar's motion feedback on interaction support.

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  • Transmission Timing Sharing of Talker's own voice and motion in Embodied Avatar Mediated Interaction under the Network Delay

    ISHII Yutaka, SEJIMA Yoshihiro, WATANABE Tomio

    IEICE technical report   109 ( 29 )   75 - 80   2009.5

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    Language：Japanese   Publisher：The Institute of Electronics, Information and Communication Engineers  

    A large network delay would obstruct human interaction using telecommunication systems such as telephony or video conference. Studies on the embodied communication support in the network delay condition have been little undertaken despite considerable investigations of the network delay of voice and image data. It is important that the ways of revealing the delay are discussed for smooth human interaction. We have already developed an embodied virtual communication system using an avatar called "VirtualActor" in which remote talkers can share embodied interaction in the same virtual space. It has been confirmed that the fixed 500ms network delay has no effects on interaction via VirutalActors in the questionnaire in the communication experiment. In this paper, we propose the presentation method of talker's voice and avatar's motion feedback in the 1.5s network delay condition by using VirtualActors. The communication experiment is performed under the conditions of a free conversation by 5 scenes; the real-time scene without the network delay, and the 4 remained network-delay scenes for the combination of the delay of the talker's voice and his/her avatar's motion feedback. The subjects consisted of a total of 15 pairs of 30 students who are familiar with each other. Sensory evaluation shows communication effects of the delay of avatar's motion feedback on interaction support.

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  • An embodied virtual communication system with a speech-driven embodied entrainment picture Reviewed

    Yoshihiro Sejima, Tomio Watanabe

    Proceedings - IEEE International Workshop on Robot and Human Interactive Communication   2008 ( 0 )   979 - 984   2009

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  • 2114 A Virtual Communication Support System with a Speech-Driven Embodied Entrainment Wall Picture

    Sejima Yoshihiro, Watanabe Tomio

    The Proceedings of Design & Systems Conference   2009 ( 0 )   279 - 283   2009

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    We have already developed an embodied virtual communication system for human interaction analysis by synthesis. This system provides two remote talkers with a communication environment in which embodied interaction is shared by VirtualActors including the talkers themselves through a virtual face-to-face scene. We confirmed the importance of embodied sharing in embodied communication by using the system. We have also demonstrated the effects of nodding responses for embodied interaction and communication support. In this paper, we develop a virtual communication support system using a speech-driven embodied entrainment wall picture focusing on the immersive effect which makes an impression visually. The effectiveness of the system is demonstrated by the sensory evaluation and speech-overlap analysis in the communication experiment for 20 pairs of 40 talkers.

    DOI： 10.1299/jsmedsd.2009.19.279

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  • A Speech-Driven Embodied Entraiment System Based on an Eye-Movement Model in Voice Communication

    SEJIMA Yoshihiro, WATANABE Tomio, JINDAI Mitsuru

    IPSJ SIG technical reports   127 ( 11 )   1 - 8   2008.1

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    Language：Japanese   Publisher：Information Processing Society of Japan (IPSJ)  

    In this paper, an eye-movement model generating eyeball movement based on head movement is proposed on the basis of the analysis of eyeball movement characteristics in an avator communication experiment. An advanced embodied entraiment communication system is developed in which the proposed model is applied to the speech-driven embodied entraiment character InterActor. The effectiveness of the system is demonstrated by the sensory evaluation of an avator communication experiment.

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  • C15 Speech-Driven Embodied Entrainment Character System with an Eyeball Movement Model

    Sejima Yoshihiro, Watanabe Tomio, Jindai Mitsuru

    The Proceedings of Conference of Kyushu Branch   2008 ( 0 )   115 - 116   2008

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    DOI： 10.1299/jsmekyushu.2008.115

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  • 3123 An Embodied Virtual Communication System with Line-of-Sight Information

    Sejima Yoshihiro, Watanabe Tomio, Jindai Mitsuru

    The proceedings of the JSME annual meeting   2007 ( 0 )   217 - 218   2007

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    We have developed the embodied virtual communication system for human interaction analysis by synthesis. In this paper, focusing on line-of-sight effected smoothly communication in face-to-face communication, embodied virtual communication system with line-of-sight information is developed. In this system, body motions and line-of-sight information of the avatar are represented based on the talker's ones which are measured by magnetic sensors and a developed line-of-sight measurement device. The effectiveness of the system is demonstrated by the sensory evaluation of a remote communication experiment.

    DOI： 10.1299/jsmemecjo.2007.4.0_217

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  • うなずき反応モデルを付加したVirtualActorを介する身体的コミュニケーションの合成的解析

    瀬島 吉裕, 渡辺 富夫, 山本 倫也

    ヒューマンインタフェースシンポジウム2006論文集   1 - 6   2006.9

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  • 身体的バーチャルコミュニケーションシステムにおける面の皮インタフェースの自己参照効果

    新徳 健, 渡辺 富夫, 山本 倫也, 瀬島 吉裕

    第6回システムインテグレーション部門学術講演会(SI2005)   635 - 636   2006

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  • VirtualActor にうなずき反応モデルを付加した身体的バーチャルコミュニケーションシステム

    瀬島 吉裕, 渡辺 富夫, 山本 倫也

    第6回IEEE広島支部学生シンポジウム論文集   216 - 219   2006

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    ＜優秀プレゼンテーション賞＞

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  • 身体的バーチャルコミュニケーションシステムにおける面の皮インタフェースの評価

    瀬島 吉裕, 山本 倫也, 渡辺 富夫, 新徳 健

    ヒューマンインタフェースシンポジウム2005論文集   929 - 934   2005.9

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Industrial property rights

  • 推定装置、推定システム、推定方法、および制御プログラム

    瀬島吉裕、森田大樹

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    Application no：特願2025- 78904  Date applied：2025.5

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  • ロボット装置

    瀬島吉裕, 佐藤洋一郎

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    Application no：特願2020-137687  Date applied：2019.2

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  • 瞳孔反応を用いた情報処理システム

    瀬島吉裕

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    Applicant：公立大学法人岡山県立大学

    Application no：特願2017-170764  Date applied：2017.9

    Announcement no：特開2019-046331  Date announced：2019.3

    J-GLOBAL

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Awards

  • 優秀講演表彰

    2024.9   日本機械学会設計工学・システム部門  

    瀬島吉裕

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  • Research Award

    2024.3   Human Interface Society  

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  • 優秀プレゼンテーション賞

    2023.9   ヒューマンインタフェースシンポジウム2023  

    森田大樹, 稲垣早紀, 瀬島吉裕

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  • 優秀講演賞

    2022.12   第23回計測自動制御学会システムインテグレーション部門講演会  

    瀬島吉裕, 橋本翔太, 渡辺富夫

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  • Best Presentation Award

    2022.9   Human Interface Symposium  

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  • 近畿経済産業局長賞

    2022.3   近畿経済産業局  

    瀬島吉裕

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    Country：Japan

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  • 奨励業績表彰

    2019.9   日本機械学会設計工学・システム部門  

    瀬島吉裕

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  • 優秀発表賞

    2019.9   日本感性工学会  

    瀬島吉裕

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  • 論文賞

    2016.11   日本福祉工学会  

    瀬島吉裕,長篤志,神代充,渡辺富夫

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    Award type：Honored in official journal of a scientific society, scientific journal 

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  • KAZUO TANIE AWARD (Most Outstanding Research Award)

    2015.9   IEEE International Conference on Robot & Human Interactive Communication (RO-MAN2015)   Development of an Expressible Pupil Response Interface Using Hemispherical Displays

    Yoshihiro Sejima, Yoichiro Sato, Tomio Watanabe

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  • 科学技術賞

    2015.7   岡山工学振興会  

    瀬島吉裕

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  • Best Paper Award

    2014.9   The Japan Society of Kansei Engineering  

    Sejima Yoshihiro

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  • Best Paper Award

    2012.9   IEEE International Conference on Robot & Human Interactive Communication (RO-MAN2012)   A Speech-driven Embodied Group Entrainment System with the Model of Lecturer's Eyeball Movement

    Yoshihiro Sejima, Tomio Watanabe, Mitsuru Jindai, Atsushi Osa, Yukari Zushi

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  • Best Poster Presentation Award

    2011.10   2nd Asian Conference on Engineering Education (ACEE2011)  

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  • Best Poster Presentation Award

    2011.10   ACEE2011  

    Sejima Yoshihiro

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  • 仁科賞

    2010.3   科学振興仁科財団 仁科顕彰会  

    瀬島吉裕

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  • 優秀研究賞

    2009.11   IEEE広島支部学生シンポジウム  

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    Country：Japan

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  • HISS記念論文賞

    2008.11   IEEE広島支部学生シンポジウム  

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    Country：Japan

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  • 優秀プレゼンテーション賞

    2006.11   IEEE広島支部学生シンポジウム  

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    Country：Japan

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Research Projects

  • 自動運転車が視線と瞳孔で意図伝達する瞳ディスプレイの開発補助事業

    2025.4 - 2026.3

    公益財団法人 JKA  研究補助 

    瀬島吉裕

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    Authorship：Principal investigator 

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  • Development of attractive communication systems based on reciprocal liking

    Grant number：22H04871  2022.4 - 2024.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

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    Grant amount：\11440000 （ Direct Cost: \8800000 、 Indirect Cost：\2640000 ）

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  • Development of avatar robot system to support online drinking party

    2021.5 - 2022.3

    JST 

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    Authorship：Principal investigator 

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  • A meddling care robot that listens in consideration of the privacy of the elderly

    2021.4 - 2022.3

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    Authorship：Principal investigator 

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  • Development of a pet robot that promotes intimacy using the pupil response for close rapport

    Grant number：19K12890  2019.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

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    Authorship：Principal investigator  Grant type：Competitive

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  • 人を惹きつける瞳輝インタフェースの開発

    2018.10 - 2019.9

    総務省  異能vation「破壊的な挑戦部門」 

    瀬島吉裕

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    Authorship：Principal investigator  Grant type：Competitive

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  • Development of an animal-type pupil response robot with empathy expression for preventing dementia

    Grant number：16K01560  2016.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Sejima Yoshihiro, WATANABE Tomio

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    Grant amount：\4550000 （ Direct Cost: \3500000 、 Indirect Cost：\1050000 ）

    In this study, we aimed to establish the expressions of pupil response to empathize with the user in a communication between human and robot. Therefore, we conducted the both approaches of "Analysis" that analyzes the characteristics of pupil response in communication and "Design" that develops and evaluates the advanced pupil response systems and robots. In the approach of "Analysis", using a pupil measurement device, we analyzed the pupil response with or without pleasant emotion during the utterance, and revealed that the pupil significantly dilates with the utterance. In the approach of "Design", we applied the developed pupil response model to the pupil response interface which have been developed so far and investigated the expressions of pupil response for promoting empathy.
    As a result, the user had a tendency that the sense of familiarity and empathy was enhanced by the dilation of pupil response.

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  • Development of the Pupil Response Robot for Preventing Dementia

    Grant number：26750223  2014.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    Sejima Yoshihiro, WATANABE Tomio, JINDAI Mitsuru

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    Authorship：Principal investigator  Grant type：Competitive

    The purpose in this research is that an objective criterion is developed to measure the pupil responses during human and robot interaction and communication. Therefore, we focused on the pupil responses related to human emotions and carried out following two approaches: Analysis and Design. In the Analysis approach, the pupil responses in human face-to-face communication were analyzed using an embodied communication system with a line-of-sight measurement device and the possibility of an objective criterion were indicated. In the Design approach, based on the above-mentioned analysis results, we developed an advanced communication system which is applied to the pupil response and an expressible pupil response interface by using hemispherical displays. The effectiveness of the developed system and developed interface were demonstrated by sensory evaluation in communication experiments.

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  • Development of an Eye-Contact Measurement System for Mental Health Care

    Grant number：24700536  2012.4 - 2014.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    SEJIMA Yoshihiro

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    Authorship：Principal investigator  Grant type：Competitive

    In this research, we developed an eye-contact measurement system using a dichroic mirror in face-to-face communication for mental health care. In this system, a dichroic mirror which has a function that transmits visible rays, and reflects infrared rays is arranged between two talkers as a virtual display, and the gaze points on the virtual display are estimated. When the estimated gaze points are present in the eye area of opposite talker, an eye-contact is established in face-to-face communication. In addition, we performed a communication experiment for examining an eye-contact measurement method in human face-to-face communication. In the experiment, an acrylic board was arranged between two talkers as a virtual display, and the gaze points were analyzed in order to examine effects of the presence of acrylic board. The result demonstrated that the talker's line-of-sight has a tendency to concentrate on the center of the acrylic board.

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  • 医療従事者のための場の視覚化技術を用いた傾聴力育成システムの研究開発

    2012.4 - 2013.3

    広島銀行  大学研究者助成事業 

    瀬島吉裕

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    Authorship：Principal investigator  Grant type：Competitive

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