Coordinated multi-streaming for 3D tele-immersion

  • Authors:
  • David E. Ott;Ketan Mayer-Patel

  • Affiliations:
  • University of North Carolina at Chapel Hill, NC;University of North Carolina at Chapel Hill, NC

  • Venue:
  • Proceedings of the 12th annual ACM international conference on Multimedia
  • Year:
  • 2004

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Abstract

This paper looks at the problem of multi-streaming in 3D tele-immersion and describes how a protocol architecture called CP (for Coordination Protocol) can be used to coordinate video frame transport between application clusters. CP provides application endpoints with information about current network conditions, and an open architecture for implementing application-specific coordination schemes. The scheme described in this paper apportions available bandwidth among flows such that frame transport synchrony, important for 3D reconstruction performance, is significantly enhanced. Results demonstrating the effectiveness of CP in increasing multi-stream coordination, while at the same time maintaining aggregate congestion responsiveness, are obtained from a FreeBSD/Linux implementation and a live experimental network. Results underscore the importance of consistency in network information across flows for realizing dramatic improvements in frame arrival synchrony.