Towards Multi-Site Collaboration in 3D Tele-Immersive Environments

Wu, Wanmin; Yang, Zhenyu; Gupta, Indranil; Nahrstedt, Klara

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https://hdl.handle.net/2142/11430 Copy

Description

Title

Towards Multi-Site Collaboration in 3D Tele-Immersive Environments

Author(s)

• Wu, Wanmin
• Yang, Zhenyu
• Gupta, Indranil
• Nahrstedt, Klara

Issue Date

2008-03

Keyword(s)

• tele-immersive environments
• networking

Abstract

"3D tele-immersion (3DTI) has recently emerged as a new way of video- mediated collaboration across the Internet. Unlike conventional 2D video-conferencing systems, it can immerse remote users into a shared 3D virtual space so that they can interact or collaborate ""virtually"". However, most existing 3DTI systems can support only two sites of collaboration, due to the huge demand of networking resources and the lack of a simple yet efficient data dissemination model. In this paper, we propose a general publish-subscribe model for multi-site 3DTI systems, which efficiently utilizes limited network resources by leveraging user interest. We focus on the overlay construction problem in the publish-subscribe model by exploring a spectrum of heuristic algorithms for data dissemination. With extensive simulation, we identify the advantages of a simple randomized algorithm. We propose optimization to further improve the randomized algorithm by exploiting semantic correlation. Experimental results demonstrate that we can achieve an improvement by a factor of five."

Type of Resource

text

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http://hdl.handle.net/2142/11430

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