Real-Time Spatial Data Management for Scalable Networked Augmented Virtual Spaces (Special Issue on New Generation Database Technologies)
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概要
- 論文の詳細を見る
This paper proposes a new framework of managing virtual spaces based on spatial databases as an extension of VRML-based systems. The framework is suitable for treating continuous virtual spaces and for managing the quality of service (QoS) of the virtual spaces depemding on user's operations and situations of computer resources. Levels of detail (LoD) of 3D objects is the most important rule for rendering scenes dynamically while managing the QoS. This paper describes a method of managing the QoS depending on the LoD in the form of spatial queries. An advantage of the framework is that spatial databases can incrementally construct virtual spaces in clients using differential descriptions based on VRML, that is, DVRML, proposed in this paper. Dynamic spatial data such as avatar's movement and real-time multimedia data such as videos should be shared by all participants in a virtual space in real time. Our framework can also handle dynamic spatial data by means of real-time updating of some spatial objects in spatial databases as well as static spatial data. We developed some experimental applications based on the framework in order to prove that it is feasible for networked virtual spaces with video components.
- 社団法人電子情報通信学会の論文
- 1999-01-25
著者
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Shimojo S
Osaka Univ. Ibaraki‐shi Jpn
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ARIKAWA Masatoshi
Faculty of Information Sciences, Hiroshima City University
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Nishimura Kazumi
Ntt System Electronics Laboratories
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Arikawa Masatoshi
Faculty Of Information Science Hiroshima City University
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Amano A
Faculty Of Information Sciences Hiroshima City University
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Maeda K
Information Processing Center Hiroshima City University
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Nishimura K
Kddi R&d Laboratories Inc.:optical Industry And Technology Development Association
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Nishimura Kouji
Information Media Center Hiroshima University
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SHIMOJO Shinji
Comptuter Center, Osaka University
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AMANO Akira
Faculty of Information Sciences, Hiroshima City University
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MAEDA Kaori
Faculty of Information Sciences, Hiroshima City University
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AIBARA Reiji
Information Processing Center, Hiroshima University
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HIRAKI Kaduo
Faculty of Information Sciences, Hiroshima City University
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FUJIKAWA Kazutoshi
Media Center, Osaka City University
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Aibara R
Information Media Center Hiroshima University
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Aibara Reiji
Information Media Center Hiroshima University
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NISHIMURA Kazutoshi
NTT Human Interface Laboratories
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Fujikawa Kazutoshi
Media Center Osaka City University
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Hiraki Kaduo
Faculty Of Information Sciences Hiroshima City University
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Shimojo Shinji
Comptuter Center Osaka University
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Nishimura Kazuhiro
Department Of Electrical & Electronic Engineering. Toyohashi University Of Technology
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