JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2011, Vol. 41 ›› Issue (2): 58-61.

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An iterative decoding based scalable distributed video coding

QING Linbo,  L  Rui, OU Xianfeng, ZHENG Min, HE Xiaohai   

  1. Institute of Image Information, College of Electronics and Information Engineering,
    Sichuan University, Chengdu 610064, China
  • Received:2010-12-01 Online:2011-04-16 Published:2010-12-01

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Abstract:

As a new video coding paradigm, distributed video coding (DVC) has lower encoding complexity and higher robustness to transmission error than conventional video coding. However, its compression ratio was comparatively low and highly dependent on groupofpictures (GOP) size. A combined video coding scheme was proposed by introducing H.264 coding into typical pixel domain WynerZiv (PDWZ) coding. The coder has a parallel encoding and iterative decoding structure, in which a predictive coding scheme and a novel sideinformation (SI) generation algorithm are also adopted. Simulation showed that the proposed architecture has higher compression ratio than an optimized PDWZ coder. Moreover, it enables a video to be processed in sequential order and provides multilayer in scalability.

Key words: group of picture(GOP), iterative decoding, predictive coding, scalable video coding, WynerZiv codec

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