Multilple description coding for error-resilient video transmission

  • Authors:

  • Mengyao Ma;Oscar C. Au;S.-H. Gary Chan

  • Affiliations:

  • Dept. of Computer Science, Hong Kong University of Science and Technology;Dept. of Electrical and Electronic Engineering, Hong Kong University of Science and Technology;Dept. of Computer Science, Hong Kong University of Science and Technology

  • Venue:
  • MIV'05 Proceedings of the 5th WSEAS international conference on Multimedia, internet & video technologies
  • Year:
  • 2005

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Abstract

Since the quality of compressed video is vulnerable to errors, video transmission over unreliable Internet is very challenging today. Multiple Description Coding (MDC) is an error resilience technique to encode the source into multiple streams, which are sent to the destination through different channels. The strategy of MDC is that an arbitrary set of descriptions can be received to construct the video with acceptable quality. In this paper, we review some MDC approaches, categorized by the dimension of description sub-sampling; namely, spatial or temporal. In spatial MDC, the blocks of each frame, or the motion vector and the residues of each block are coded into multiple descriptions; while in temporal MDC, the video sequence is coded into multiple decodable streams, each with its own prediction process.