Transactions of the Virtual Reality Society of Japan
Online ISSN : 2423-9593
Print ISSN : 1344-011X
ISSN-L : 1344-011X
Volume 17 , Issue 2
Showing 1-16 articles out of 16 articles from the selected issue
  • Type: Cover
    2012 Volume 17 Issue 2 Pages Cover1-
    Published: June 30, 2012
    Released: February 01, 2017
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  • Type: Index
    2012 Volume 17 Issue 2 Pages Toc1-
    Published: June 30, 2012
    Released: February 01, 2017
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  • Type: Index
    2012 Volume 17 Issue 2 Pages Toc2-
    Published: June 30, 2012
    Released: February 01, 2017
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  • Yoshimichi Watanabe, Takefumi Ogawa
    Type: Article
    2012 Volume 17 Issue 2 Pages 61-
    Published: June 30, 2012
    Released: February 01, 2017
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  • Type: Appendix
    2012 Volume 17 Issue 2 Pages 62-
    Published: June 30, 2012
    Released: February 01, 2017
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  • Hideto Yuzawa, Ken-ichi Okada
    Type: Article
    2012 Volume 17 Issue 2 Pages 63-72
    Published: June 30, 2012
    Released: February 01, 2017
    JOURNALS FREE ACCESS
    In this paper, we report on a work state awareness system to help people at different locations manage interruptions by broadcasting to colleagues their availability for interruptions for specific projects. The prototype is designed as a tangible interface by using a metaphor of a Japanese rock garden where each rock icon represents each user's task. Our observation in a natural work environment found that users used our prototype easily to signal their availability. In addition, experimental results indicated that our prototype helped to reduce the number of coordination and inappropriate messages.
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  • Arinobu Niijima, Takefumi Ogawa
    Type: Article
    2012 Volume 17 Issue 2 Pages 73-78
    Published: June 30, 2012
    Released: February 01, 2017
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    In order to realize high realistic interactions between a user and virtual objects, it is very important to give a user tactile stimuli in augmented reality as if he touched them. However, in previous works the area in which the system can provide him with tactile stimuli depends on the place where is covered by the tactile devices. Thus, it has been difficult to give him tactile stimuli in an arbitrary place. Our aim is to establish representation method of tactile stimuli independent of locations of the devices. In this paper to control locations of tactile stimuli by tactile illusion caused by visual stimuli, we have investigated the correlation between visual stimuli and tactile perception. By subjective experiments, we conclude that subjects feel the perceived positions of vibro-tactile sensation shifted to those of visual sensation, and the influence of visual stimuli is changed by the movements of visual objects.
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  • Takeo Tsukamoto, Yukiko Nakano
    Type: Article
    2012 Volume 17 Issue 2 Pages 79-89
    Published: June 30, 2012
    Released: February 01, 2017
    JOURNALS FREE ACCESS
    This paper proposes a direction giving avatar system in Metaverse, which automatically generates direction giving gestures based on linguistic information obtained from the user's chat text input and spatial information in Metaverse. First, we conduct an experiment to collect direction giving conversation corpus. Then, using the collected corpus, we analyze the relationship between the proxemics of conversation participants and the position of their direction giving gestures. Next, we analyze the relationship between linguistic features in direction giver's utterances and the shape of their spatial gestures. We define five categories of gesture concepts and four gesture shape parameters, and analyze the relationship between the gesture concepts and a set of gesture parameters. Based on these results, we propose an automatic gesture decision mechanism and implement a direction giving avatar system in Metaverse.
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  • Kouichi Watanabe, Kouta Minamizawa, Hideaki Nii, Susumu Tachi
    Type: Article
    2012 Volume 17 Issue 2 Pages 91-100
    Published: June 30, 2012
    Released: February 01, 2017
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    We propose a mutual communication system in which several users can join the same cyberspace by telexistence. We focused on immersion into space, face-to-face communication, physical interaction with the environment, and real-time communication to construct a system based on these factors in order to solve the problems of conventional systems. The system is based on TWISTER, which is an immersive auto-stereoscopic display, and it consists of a user's face image and systems for motion capture, sound and network communication. Two users in separate places participated in shared cyberspace by using CG avatars that had actual images of the users' faces, allowing them to see each other face-to-face and talk with gestures. Thus, two users can enter the same cyberspace and communicate face-to-face with detailed embodiment.
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  • Mamoun Nawahdah, Tomoo Inoue
    Type: Article
    2012 Volume 17 Issue 2 Pages 101-109
    Published: June 30, 2012
    Released: February 01, 2017
    JOURNALS FREE ACCESS
    Videoconferencing continues to emerge as a popular means of connecting remote participants. One of its goals is to establish a sense of presence through video imagery. One way to achieve a highly realistic presence is to generate a life-sized image of a remote person on a large display. However, in this case, the display conceals a large region of the local person's front view, and replaces it with the remote site background. This may affect the viewer's sense of the remote person's presence. To resolve these conflicting effects, we propose a method involving the superimposition of the remote person's figure on the local site front view. In this way, the local person may feel as though the remote person is before him/her in his/her spatial environment. The method has been implemented in the Being Here System accordingly. A system evaluation experiment revealed that the proposed method significantly enhanced the perceived presence of the remote person, in comparison with conventional videoconferencing.
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  • Masaki Omata, Junki Nakamura, Masaki Komiya, Atsumi Imamiya, Takeyasu ...
    Type: Article
    2012 Volume 17 Issue 2 Pages 111-118
    Published: June 30, 2012
    Released: February 01, 2017
    JOURNALS FREE ACCESS
    This paper describes an automatic inspection map creation system that automatically records user's walking trajectories and view images interlocked with user's walking and a large information board that display the inspection map, public information on disasters and tweets from residents for regional disaster prevention. We prototyped them and conducted an experiment for comparing the map creation system with a conventional system. The results show that it allows users to create a map without editing and it is easy to use for novice users. We also conducted an experiment about speed of scroll text and fixation area on the screen of the information board due to differences in height of the screen. The results show a prediction expression of the readable speed based the number on lines and the number of characters and show that the number of fixations on the lower area is significantly lower than the upper area when the screen is located below viewers' eyes.
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  • Reiko Aruga, Atsuhiko Maeda, Minoru Kobayashi
    Type: Article
    2012 Volume 17 Issue 2 Pages 119-128
    Published: June 30, 2012
    Released: February 01, 2017
    JOURNALS FREE ACCESS
    Consumers are very keen to communicate with a richer set of media and 3D shape is a very intuitive and powerful means of communication. Recently, users and developers have become more interested in capturing, in 3D, things that currently exist. New services will emerge if consumers can access 3D capture devices that are low cost and low effort. Existing 3D scanners take too long and are difficult to set up. We propose a box type capture device with which anyone can rapidly capture whole surfaces of target objects without any complicated operations. This paper proposes the three basic technologies of the capture device and demonstrates their feasibilities.
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  • Young ah Seong, Takashi Nariya, Tomoko Hashida, Takeshi Naemura
    Type: Article
    2012 Volume 17 Issue 2 Pages 129-132
    Published: June 30, 2012
    Released: February 01, 2017
    JOURNALS FREE ACCESS
    Estimating the number of visitors in museums is an important issue. This paper proposes to solve this problem by measuring CO_2 concentration in a museum. The CO_2 concentration is mainly affected by the number of visitors as well as the size of space, the amount of ventilation and the time to stay. A simplified model for estimating the number of visitors from the CO_2 measurement was investigated and applied at MUSEUM OF CONTEMPORARY ART TOKYO. Experimental results show that our proposed method can estimate the number of visitors in a day within 6.7% of errors.
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  • Type: Appendix
    2012 Volume 17 Issue 2 Pages 133-135
    Published: June 30, 2012
    Released: February 01, 2017
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  • Type: Appendix
    2012 Volume 17 Issue 2 Pages 136-
    Published: June 30, 2012
    Released: February 01, 2017
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  • Type: Cover
    2012 Volume 17 Issue 2 Pages Cover2-
    Published: June 30, 2012
    Released: February 01, 2017
    JOURNALS FREE ACCESS
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