著者

金子 拓史 ヤェム ヴィボル 池井 寧

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.24, no.2, pp.143-152, 2019 (Released:2019-06-30)

参考文献数

24

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We aimed to generate a walking sensation for a person who just sits on a chair. We considered that, such a virtual walking method allows a local person to experience the performances of other person or a robot who being at the remote area. In this study, we proposed a method of using tendon electrical stimulation combined with kinesthetic sensation on the lower limbs for providing high realistic sensation of walking. We developed a system that can present multisensory stimuli of visual image, kinesthetic and electrical pulses. Electrodes were placed on both the Achilles tendons and the tibialis anterior tendons of the lower limbs. We preliminarily investigated the placement of the electrodes at the lower limbs in terms of sensation of tension to select the appropriate location. We also investigated the sensation of translational motion and the sensation of walking when visual stimulation and electrical/kinesthetic stimulation were presented to the lower limbs. The result of the subjective rating indicated that kinesthetic stimulation could generate the sensations of translational motion and walking. Furthermore, tendon electrical stimulation could enhance these sensations to create more realistic experience.

著者

多田隈 理一郎 多田隈 建二郎 横井 一仁

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.13, no.4, pp.429-438, 2008

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In this research, we propose the analysis method of visual and haptic information flow in human central nervous system by using a wearable haptic display for hairy skin of human arm. This display can produce haptic stimulation on the hairy skin of human arm by using DC motors. In the evaluation experiment, we used the virtual reality system with physical mass-spring-damper calculation, and controlled virtual arm with mechanical haptic display and motion capture system.

著者

鈴木 克洋 中村 文彦 大塚 慈雨 正井 克俊 伊藤 勇太 杉浦 裕太 杉本 麻樹

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.22, no.3, pp.379-389, 2017 (Released:2017-09-30)

参考文献数

17

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The head-mounted displays (HMD) allow people to enjoy immersive VR experience. A virtual avatar can be the representative of a user in the virtual environment. However, the expression of the virtual avatar with a HMD user is constrained. A major problem of wearing an HMD is that a large portion of one's face is occluded, making facial recognition difficult in an HMD-based virtual environment. To overcome this problem, we propose a facial expression mapping technology using retro-reflective photoelectric sensors. The sensors attached inside the HMD measures the distance between sensors and a face. The distance values of five basic facial expressions (Neutral, Happy, Angry, Surprised, and Sad) are used for training the neural network to estimate the facial expression of a user. Our system can also reproduce facial expression change in real-time through an existing avatar by using regression.

著者

仲野 潤一 大澤 壮平 鳴海 拓志 谷川 智洋 廣瀬 通孝

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.22, no.2, pp.241-250, 2017 (Released:2017-06-30)

参考文献数

11

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Examining an old photograph at the exact location where it was captured helps understanding the photograph deeply. We developed an AR application for mobile devices designed to provide a virtual experience of past scenery by superimposing old photographs on current landscapes. We introduced the application to a walking guided tour. Designing a route of walking guided tour and authoring AR contents shown on the tour was done collaboratively with us and tour guides. The tour titled ” Travel around Fukagawa at the time of last olympic, 1964” took place in Koto city, Tokyo with 12 participants. The tour was planned for 1.5 hour tour and it had 13 old photographs. This paper describes implementation of the application, design process of a walking guided tour, and feedback of the tour from both participants and guides.

著者

佐野 祐士 佐藤 晃矢 白石 僚一郎 大槻 麻衣

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.22, no.4, pp.493-502, 2017 (Released:2017-12-31)

参考文献数

35

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We focused on the effect that applying visual and haptic stimuli reduce the task load of situation awareness during a ball game, and we hypothesized that as a result, they also reduce the number of misplays. We developed the system which can provide the visual and haptic stimuli for supporting 3-on-3 soccer game in real-time; for visual stimuli, the position relationship of opponent players are shown, and for haptic stimuli, the position of opponent player who are in the out of view angle. Through the experiment we evaluated whether the visual and haptic stimuli can reduce the task load in a ball game. As a result, the proposed visual or haptic stimuli itself reduced the player's task load and improved the ball handling skill. On the other hand, we found that the combination of visual and haptic stimuli did not reduce the task load of player, and did not contribute to the reduction of misplay.

著者

松嵜 直幸 原澤 賢充 繁桝 博昭 森田 寿哉 伊藤 崇之 齊藤 隆弘 佐藤 隆夫 相澤 清晴 北崎 充晃

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.15, no.1, pp.41-44, 2010-03-31 (Released:2017-02-01)

参考文献数

5

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This paper investigated the effects of active/passive viewing on the visually induced motion sickness. Participants wearing a Head-Mount-Display (HMD) searched a target character in random dots and other characters projected on a screen using a video camera moved by them (active viewing). They could see a part of the screen and the movies displayed via the HMD were recorded. When they saw the recorded movie later (passive viewing) through the HMD, they felt motion sickness worth than before. This suggests that passive viewing induced severer motion sickness than active viewing.

著者

渡邉 英徳 原田 真喜子 遠藤 秀一

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.15, no.3, pp.307-314, 2010

被引用文献数

2

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"Tuvalu Visualization Project" is a net art work on digital globe that tells the realities of remote place. This work has both the function as a photograph archive and as a communications platform. Our purpose was to create the chance for users of overlapping the event in remote place with daily life of users and re-interpreting it globally. To achieve such purposes, we made a visualization of the real state of affairs in Tuvalu with a digital globe, and added the pseudoand synchronous communications function to it. We think It will have the possibility of supporting the international contribution activity by the individual and nonprofit organization etc.

著者

應和 春香 佐賀野 正行 吉村 康弘 小村 仁美 山崎 仁之 渡邊 大輔 仲野 嘉信 白澤 卓 辻村 壮史 川嶋 賢二 福嶋 昌子 井村 誠孝 千原 國宏 オワ ハルカ サガノ マサユキ ヨシムラ ヤスヒロ コムラ ヒトミ ヤマザキ マサユキ ワタナベ ダイスケ ナカノ ヨシノブ シラザワ タク ツジムラ ソウシ カワシマ ケンジ フクシマ マサコ イムラ マサタカ チハラ クニヒロ Owa Haruka Sagano Masayuki Yoshimura Yasuhiro Komura Hitomi Yamazaki Masayuki Watanabe Daisuke Nakano Yoshinobu Shirazawa Taku Tsujimura Soshi Kawashima Kenji Fukushima Masako Imura Masataka Chihara Kunihiro

出版者

日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.15, no.3, pp.315-324, 2010-09

著者

鈴本 直弥 浅井 暢子 寺本 渉

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.21, no.1, pp.53-62, 2016

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For users in a shared virtual environment (VE), a sense of being there together (copresence) is a key to behave as if they are in an actual environment. The present study investigated whether copresence can be measured using the social Simon effect (SSE) and event-related potentials (ERPs) associated with this effect. In the standard Simon effect, single participants press a left or right key in response to target color, while the target appeared on the left or right side of a monitor. Responses are generally faster when the target and key are located on the spatially-congruent side than on the incongruent side. This less happens when participants responds only to either color with either key. However, this effect reemerges when a participant responds to either color with either key, and their partner sat side by side responds to the other color with the other key. This is called SSE. We hypothesized that the SSE should occur if users experience copresence in the VE. Experiment 1 replicated the SSE in the actual environment. In Experiments 2 and 3, two participants in different rooms observed the same virtual environment with their partners' avatar through head-mounted displays, and performed the task. We compared between a group in which the participants interacted with their partner beforehand in the VE (high copresence group) and that in which they did not (low copresence group). The results showed that the stronger SSE occurred for the former group, suggesting that the SSE can be a measure for copresence in the VE.

著者

田中 信壽

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.10, no.1, pp.129-138, 2005

参考文献数

78

被引用文献数

6

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The health hazards posed by Virtual Reality (VR) environments can be divided into two groups based on their developing mechanism. The first group is related to optical stimulus load and is exemplified by Visual Display Terminal (VDT) Syndrome. The second group encompasses those caused by space information confusion and is exemplified by VR sickness. Among space information confusion induced hazards, VR sickness is especially serious because it can involve strong discomfort, headache, nausea and vomiting. Because VR sickness may prove to be a barrier to the spread of VR environments, it is thought that countermeasures are required. This paper reports the current state of VR sickness countermeasure knowledge. Research is summarized and organized mainly according to the following stories: "Cognition of VR sickness", "Mechanisms involved with the development of VR sickness", "Directions for countermeasure development" and "Evaluation of VR sickness".

著者

河合 隆史 城處 朋子 藤野 雄一 佐藤 仁美 望月 崇由 井上 雅之 二瓶 健次 松本 美浩

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.7, no.1, pp.79-86, 2002

被引用文献数

7

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In this study, the authors developed and evaluated the virtual classroom system on cyberspace for hospitalized children. In this system, children can study and communicate with children of the outside of the hospital. The authors evaluated this system from the following viewpoints; (1) Psycho-physiological effects on children. (2) Usability of interface. (3) Spatial design of cyberspace. This paper reports the results of the experiment and discusses the validity of cyberspace in terms of education for hospitalized children.

著者

石井 晃 崔 雄 李 亮 関口 博之 八村 広三郎

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.18, no.4, pp.465-474, 2013

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We propose an interactive healthcare system that uses feces data to support health promotion using smart phone. User inputs feces data, such as shape, color, smell, etc., into the system when they go to the lavatory. If the input data is significantly bad, the user will be notified that the condition of his/her health requires more attention. The user can print feces data that is stored in the system and show it to a doctor. We expect the users can adhere to input their data to the system without getting bored by introducing an interactive game interface.

著者

加藤 博一 Billinghurst Mark 浅野 浩一 橘 啓八郎

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.4, no.4, pp.607-616, 1999

被引用文献数

106

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We describe a fiducial marker tracking method for an augmented reality system. Square markers are used for fast precise registration and a camera model that includes a distortion function is also employed. We also describe a system calibration method. In order to display virtual objects on a head mounted display (HMD) screen the relationships between the HMD, human eyes and head mounted camera are very important. Camera calibration is also vital for accurate marker tracking. We describe a novel HMD calibration technique which does not require much effort from the user and provides very good usability. With good calibration our tracking method provides very accurate tracking and runs at 30 frames/sec on a SGI Octane computer.

著者

永野 光 岡本 正吾 山田 陽滋

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.16, no.3, pp.343-353, 2011

被引用文献数

3

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This article describes research directions in the structure of perceptual/tactile dimensions of material textures. We introduce methods of psychological experiments and mathematical approaches for structuring tactile dimensions and summarize such dimensions revealed in previous studies. Furthermore, we discuss the dimensions from the points of view of sensory receptors. Holistically, we suggest that the material textures are composed of at least 5 perceptual dimensions, that are macro and fine roughness, hardness/softness, coldness/warmness, and friction (moistness/dryness, stickiness/slipperiness).

著者

檜山 敦 土山 裕介 宮下 真理子 江渕 栄貫 関 正純 廣瀬 通孝

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.16, no.4, pp.643-652, 2011

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In recent years, most of traditional craftsmanship is declining because of aging skilled craftspeople and fewer successors. Therefore, methods for digital archiving of such traditional craftsmanship are needed. We have constructed a wearable skill handing down system focused on first-person visual and audio information and biological information of a craftsman. We used instrumental information associated with the usage of the tools for evaluating the effect of proposed wearable display system of intangible cultural heritage. In this paper, we show the result of archiving and training on the skills of Kamisuki, Japanese traditional papermaking.

著者

田村 秀行 柴田 史久 木村 朝子 坂井 陸一 横江 祥吾 濱田 純也 家崎 明子

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.12, no.4, pp.567-576, 2007

被引用文献数

2

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Mixed-Reality, a technique to superimpose CG images on the real scene, is expected as a new way of information visualization and presentation. We take up "Disaster Prevention Studies and Disaster Measures" as new application field of MR technology, and develop a system of visualizing simulations of the disasters that have occurred previously or have a possibility for occurring in the future. First, we developed a system of superimposing CG images on a diorama (geographical miniature model). Next, we implemented the application to observe the flood or fire simulation results or subsurface construction, and confirm the effectiveness. We also built an application to observe the history of fire disaster on the PC or MR space. Furthermore, we offer another suggestion that is the way to expand this system to mobile type to use it outdoors.

著者

小池 英樹 西川 渉 福地 健太郎

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.14, no.1, pp.111-119, 2009

被引用文献数

1

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Liquid Cristal Displays are getting larger, thinner, lighter, and cheaper. They have many advantages when they are used as a tabletop compared to the projector-based tabletop. As is well known, a light from the LCD is polarized and it is blocked when a polarized film is placed as its axis of polarization is perpendicular to that of the LCD. On the other hand, an additional polarized film cancels this image blocking when it is placed on the LCD. By using this optical phenomenon, we developed transparent markers which are almost invisible to human but are still visible to the camera. Moreover, we succeeded to make the markers rotation invariant by using two half waveplates. Tangible transparent Magic Lens applications which use the transparent markers are also shown.

著者

Naoki Kameyama Aiko Murata Junji Watanabe Hsin-Ni Ho

出版者

THE VIRTUAL REALITY SOCIETY OF JAPAN

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.28, no.4, pp.321-324, 2023 (Released:2023-12-27)

参考文献数

15

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A haptic device has been developed that enables individuals to feel heartbeat through the sense of touch by converting heartbeat sounds into vibrotactile feedback. We conducted two experiments with this device: the first focused on feeling one’s own heartbeat, and the second on feeling another person’s heartbeat. Our findings indicate that feeling one’s own heartbeat can reduce anxiety and make a person calm, while touching another person’s heartbeat can enhance interpersonal closeness.

著者

花光 宣尚 田井 秀昭 元木 龍也 佐藤 文彦 清水 啓太郎 神山 洋一 南澤 孝太 evala 水口 哲也

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.27, no.1, pp.51-64, 2022-03-31 (Released:2022-04-23)

参考文献数

51

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This paper proposes a chair-based synesthetic experience device, Synesthesia X1-2.44, which utilizes auditory, haptic, and visual sensations. In order to realize a synesthetic experience, we designed the chair that includes 44 haptic actuators, two speakers and 5 stage lights, and exhibited it at Media Ambition Tokyo 2019. When discussing this work, we observed “sense of stretching and contracting of the body”, “sense of floating/sinking”, and “sense of disappearance of the body”. In addition, the combination of whole-body haptic sensation and spatial acoustics with sounds felt from inside/outside the body affects the autonomic nervous system and induces a pleasant state, and create a representation different from the usual auditory and haptic experiences.

著者

平野 祐也 竹永 正輝 西川 尚志 丸山 寛人 浅野 日登美 椎名 星歩 千葉 麻由 武田 雄太 渡邊 真輝 橋 本直

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.26, no.2, pp.155-158, 2021-06-30 (Released:2021-06-30)

参考文献数

5

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The parasitism of plants on the human body often appears in fiction, however until now it was limited to the expression in media such as novels, illustrations, and movies. Therefore, we created "Brain Tree" which enables appreciators to experience the sensation of plant parasitizing on their head. In this work, we used a head massager to present the sensation of plant roots invade the head. Furthermore, various tactile expressions are incorporated to enrich the experience such as the feeling that water penetrates into the head by watering, the feeling that the parasitic plant absorbs the nutrients in the appreciator’s head, and the feeling of the plant swaying in the wind. In this paper, we report the system design, implementation, experience design, and appreciators’ feedbacks in exhibitions.