ICAT-EGVE2019 - Posters and Demos

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https://diglib.eg.org/handle/10.2312/2632805

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Browsing ICAT-EGVE2019 - Posters and Demos by Subject "centered computing"

Now showing 1 - 7 of 7
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    Augmented Dodgeball AR Viewer for Spectators
    (The Eurographics Association, 2019) Azuma, Shota; Hertzog, Clara; Sakurai, Sho; Hirota, Koichi; Nojima, Takuya; Kakehi, Yasuaki and Hiyama, Atsushi
    These last few years many systems and methods have been developed to provide information to spectators about a sport game such as baseball, basketball, soccer, etc. Among them, Augmented Sport is one of the emerging area that intends to merge video game concept into physical sports. This project focuses on merging game elements such as Health Points (HP), Attack Power (AP) and Defense Power (DP) to improve enjoyment and variety of players. During Augmented Dodgeball games, the spectators can visualize via the Mixed Reality device additional parameters such as HP, AP and DP of each player. This data is superimposed onto each physical players by virtue of AR markers they wear. To avoid marker occlusion issues, fixed camera(s) are also used to inquire player's physical information and share it via a database. Studies have been conducted in order to find out the best displaying design, methods and limits of the system.
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    Difference of the Sense of the Texture Between Visual and Touchable Cloth Object in VR Space
    (The Eurographics Association, 2019) Tsukuda, Yoshio; Koeda, Masanao; Kakehi, Yasuaki and Hiyama, Atsushi
    In a virtual reality (VR) space, the texture of cloth is perceived visually using the influence of three-dimensional computer graphics (3DCG) representing the cloth object surface material and movement. In recent years, research has been conducted on various dynamics-based cloth simulations in 3DCG. However, the relation between the mechanical parameters of the generated cloth and the texture of the cloth has not been clarified, and instead is implemented based on the sense of the 3DCG developer. In this study, we examine the differences of the texture sense between the visual texture of cloth objects and the texture when actively touching the cloth objects in a VR space, by changing mechanical parameters of the cloth. The experimental results with 10 subjects using a semantic differential method showed that the subjects did not feel a clear texture with most adjective pairs in the visual texture only. The subject obtained the texture more clearly by actively touching the cloth with no haptic feedback. It also was revealed that with some mechanical parameters, the sense of texture can be reversed between the visual-only feeling and the active touch of the cloth.
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    Expanding the Freedom of Eye-gaze Input Interface using Round-Trip Eye Movement under HMD Environment
    (The Eurographics Association, 2019) Matsuno, Shogo; Sato, Hironobu; Abe, Kiyohiko; Ohyama, Minoru; Kakehi, Yasuaki and Hiyama, Atsushi
    In this paper, we propose a specific gaze movement detection algorithm, which is necessary for implementing a gaze movement input interface using an HMD built-in eye tracking system. Most input devices used in current virtual reality and augmented reality are hand-held devices, hand gestures, head tracking and voice input, despite the HMD attachment type. Therefore, in order to use the eye expression as a hands-free input modality, we consider a gaze input interface that does not depend on the measurement accuracy of the measurement device. The proposed method generally assumes eye movement input different from eye gaze position input which is implemented using an eye tracking system. Specifically, by using reciprocation eye movement in an oblique direction as an input channel, it aims to realize an input method that does not block the view by a screen display and does not hinder the acquisition of other lines of sight meta information. Moreover, the proposed algorithm is actually implemented in HMD, and the detection accuracy of the roundtrip eye movement is evaluated by experiments. As a result, the detection results of 5 subjects were averaged to obtain 90% detection accuracy. The results show that it has enough accuracy to develop an input inter-face using eye movement.
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    Generation of Walking Sensation by Upper Limb Motion
    (The Eurographics Association, 2019) Sueta, Gaku; Saka, Naoyuki; Yem, Vibol; Amemiya, Tomohiro; Kitazaki, Michiteru; Sato, Makoto; Ikei, Yasushi; Kakehi, Yasuaki and Hiyama, Atsushi
    This paper proposes a method to generate a turning walk sensation to the user by an arm swing display. We assumed a hypothesis that the turning walk sensation is generated by providing different motion profiles of passive arm swing on the left and right arms. We show that turning walk sensation can be generated by presenting arm swing motion with a different flexion ratio of the shoulder joint, depending on the turning radius.
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    Narrowcasting for Stereoscopic Photospherical Cinemagraphy
    (The Eurographics Association, 2019) Cohen, Michael; Iida, Takato; Sato, Rintaro; Kakehi, Yasuaki and Hiyama, Atsushi
    We have developed an application which blurs the distinction between static and dynamic imagery in a stereoscopic omnidirectional browser. A ''cinemagraph'' is a living picture, interpolating between a still photo and a video. A stereo omnidirectional camera can capture stereographic contents. Combining such functionality yields a photospherical cinemagraph. Runtime control of activation fields allows selective alternation between frozen and animated scene elements. Narrowcasting, a user interface idiom for selective activation, is used to alternate between static and moving imagery) . Presentation includes stereoscopic display (binocular channels) and spatial sound.
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    Preliminary Study on Surface Texture to Manipulate Perceived Softness of 3D Printed Objects
    (The Eurographics Association, 2019) Miyoshi, Motoki; Punpongsanon, Parinya; Iwai, Daisuke; Sato, Kosuke; Kakehi, Yasuaki and Hiyama, Atsushi
    Previous studies have attempted to manipulate the elastic properties of products from elements such as different materials and internal structures. In this paper, we investigate whether we can manipulate the softness perceived by the surface texture when using the FDM-3D printer. We investigated the perceived softness of the surface texture provided by Tymms et al., in which cones of 1 mm in height are arranged, by a subject experiment. From the experimental results, it was found that the hardness perceived by increasing the arrangement interval of the cones decreased and the subjects perceived softer the objects with the surface texture.
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    Production of Instructional Videos Using a Virtual Presentation Room on a Mobile Head-mounted Display
    (The Eurographics Association, 2019) Yano, Kojiro; Kakehi, Yasuaki and Hiyama, Atsushi
    Instructional videos are frequently used in education and it is important for teachers to produce the materials with minimal time and efforts. In this article, I report SlidesGo, a "virtual presentation room" software for a mobile head-mounted display. It allows a user to record a slide presentation video with an avatar in a virtual environment as well as to record head orientations during a presentation. and produce a heatmap to characterize the visual attention of the speaker during the recording. Instructional video productions using a mobile head-mounted display is far more time and cost efficient and give more insights into the teacher's non-verbal behaviour than those in a physical studio.