Wyner-Ziv Coding for Video: Applications to Compression and Error Resilience

  • Authors:
  • Anne Aaron;Shantanu Rane;Rui Zhang;Bernd Girod

  • Affiliations:
  • -;-;-;-

  • Venue:
  • DCC '03 Proceedings of the Conference on Data Compression
  • Year:
  • 2003

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Abstract

In this paper we consider two separate applications of Wyner-Ziv coding ofmotion video.The Wyner-Ziv Theorems on source coding with side informationavailable only at the decoder suggests that an asymmetric video codec, where individualframes are encoded separately, but decoded conditionally (given temporallyadjacent frames) could achieve efficiency comparable to current interframe videocompression systems.We report first results on a Wyner-Ziv coding scheme formotion video that uses intraframe encoding, but interframe decoding.Secondly,we apply Wyner-Ziv coding to the transmission of compressed video over an error-prone channel.We use Wyner-Ziv Coding to generate a supplementary bitstreamwhich contains a coarsely quantized representation of the transmitted video signal.Using the conventionally decoded, error-concealed video signal as side informationto decode the Wyner-Ziv bits, the transmission errors in the decoded video waveformare corrected up to a certain residual distortion, significantly improving the visual quality of the decoded video.