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Title: Scalable networked virtual reality system with live video
Authors: Oh, Seiwoong
Kado, Daisuke
Taira, Tomohiro
Fujikawa, Kazutoshi
Shimojo, Shinji
Arikawa, Masatoshi
Miyahara, Hideo
カド, ダイスケ
タイラ, トモヒロ
フジカワ, カズトシ
シモジョウ, シンジ
アリカワ, マサトシ
ミヤハラ, ヒデオ
呉, 世雄
賀戸, 大輔
平, 朋大
藤川, 和利
下条, 真司
有川, 正俊
宮原, 秀夫
Issue Date: Jun-1997
Publisher: Nara Institute of Science and Technology
Series/Report no.: Information Science Technical Report ~ TR97010
Abstract: Currently, most of networked virtual reality systems do not consider the scalability of the system in terms of the network. They assume high speed network among rather small number of distributed users. However, as high performance graphic workstations and PCs become inexpensive, a large-scale networked virtual reality and use of a wide area network with the limited performance are expected. In this paper, we propose a scalable networked virtual reality system with a new dynamic quality control mechanism. We introduce the notion of the importance of presence(IoP), to represent the degree of the importance of objects. The proposed system can tolerate changes of both network and end system resources by reducing the quality of less important objects dynamically based on their IoP, and keep total quality of a virtual space as much as possible from point of view of user's perception. Unlike conventional virtual reality systems, our enhanced virtual reality system retrieves objects in a virtual space incrementally from a server as they are required and also integrates not only real-time videos stored in the server but also live videos into a virtual space seamlessly. We have been implementing a prototype system on SGI indigo2 workstation. We achieved good result of the waiting time on the prototype system with the proposed quality control mechanism.
ISSN: 0919-9527
Text Version: author
Appears in Collections:テクニカルレポート / Technical Report

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