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IEICE TRANSACTIONS on Electronics

Basic Design of Video Communication System Enabling Usersto Move Around in Shared Space

Keiji HIRATA, Yasunori HARADA, Toshihiro TAKADA, Naomi YAMASHITA, Shigemi AOYAGI, Yoshinari SHIRAI, Katsuhiko KAJI, Junji YAMATO, Kenji NAKAZAWA

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Summary :

We propose a 2D display and camera arrangement for video communication systems that supports both spatial information between distant sites and user mobility. The implementation of this arrangement is called the "surrounding back screen method." The method enables users to freely come from and go into other users' spaces and provides every user with the direct pointing capability, since there is no apparent spatial barrier separating users, unlike the case of conventional video communication systems. In this paper, we introduce two properties ("sharedness" and "exclusiveness") and three parameters (a distance and two angles) to represent the geometrical relationship between two users. These properties and parameters are used to classify the shared spaces created by a video communication system and to investigate the surrounding back screen method. Furthermore, to demonstrate and explore our surrounding back screen method, we have developed a prototype system, called t-Room. Taking into account practical situations, we studied a practical case where two t-Rooms with different layouts are connected.

Publication
IEICE TRANSACTIONS on Electronics Vol.E92-C No.11 pp.1387-1395
Publication Date
2009/11/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E92.C.1387
Type of Manuscript
Special Section PAPER (Special Section on Electronic Displays)
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