Witsenhausen-wyner video coding

Mei Guo, Zixiang Xiong, Feng Wu, Debin Zhao, Xiangyang Ji, Wen Gao

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

Inspired by Witsenhausen and Wyner's 1980 (now expired) patent on interframe coder for video signals, this paper presents a Witsenhausen-Wyner video codec, where the motion-compensated previously decoded video frame is used at the decoder as side information for joint decoding. Specifically, we replace predictive Inter coding in H.264/AVC by the syndrome-based coding scheme of Witsenhausen and Wyner, while keeping the Intra and Skip modes of H.264/AVC unchanged. We employ forward motion estimation at the encoder and send the motion vectors to help generate side information at the decoder, since our focus is not on low-complexity encoding. We also examine the tradeoff between the motion vector resolution and coding efficiency. Within the Witsenhausen-Wyner coding mode, we optimize the decision between syndrome coding and entropy coding among different discrete cosine transform (DCT) bands and among different bit-planes within each DCT coefficient. Extensive simulations of video transmission over wireless networks show that Witsenhausen-Wyner video coding is more robust against channel errors than H.264/AVC. The price paid for enhanced error-resilience with Witsenhausen-Wyner coding is a small loss in compression efficiency. 

Original languageEnglish
Article number5734812
Pages (from-to)1049-1060
Number of pages12
JournalIEEE Transactions on Circuits and Systems for Video Technology
Volume21
Issue number8
DOIs
Publication statusPublished - Aug 2011
Externally publishedYes

Keywords

  • Distributed video coding
  • Error resilience
  • Syndrome coding

Cite this

Guo, M., Xiong, Z., Wu, F., Zhao, D., Ji, X., & Gao, W. (2011). Witsenhausen-wyner video coding. IEEE Transactions on Circuits and Systems for Video Technology, 21(8), 1049-1060. [5734812]. https://doi.org/10.1109/TCSVT.2011.2129910