Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (2): 32-38,45.doi: 10.3969/j.issn.1000-565X.2011.02.006

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Generation of Side Information of Distributed Video Coding at Block Level

Liu Dong  Du Ming-hui   

  1. South China university of technology, electronic and information institute, guangdong guangzhou 510640
  • Received:2010-04-21 Revised:2010-05-17 Online:2011-02-25 Published:2011-01-02
  • Contact: 刘东(1986-)，男，博士生，主要从事分布式视频编码研究 E-mail:ldcanfly@163.com
  • About author:刘东(1986-)，男，博士生，主要从事分布式视频编码研究
  • Supported by:

    NSFC-广东省自然科学联合基金资助项目(U0735004)

PDF

1532

Abstract:

In order to improve the quality of side information（SI） generated by the motion-compensated temporal interpolation（MCTI） during distributed video coding（DVC）,a scheme to generate SI at the block level is proposed.In this scheme,a mode decision is made at the encoder side,and the macro-blocks in the WZ frame are classified into two modes,namely WZ mode and intra/WZ mode.For the blocks in WZ mode,SI is generated via the MCTI,while for those in intra/WZ mode,high-quality SI is generated by means of motion-compensated quality enhancement（MCQE） after transmitting low-quality intra blocks from the encoder to the decoder.Experimental results demonstrate that the proposed scheme greatly improves the SI quality and achieves an improvement of RD performance up to 2.10dB,especially for strong-motion video sequences and longer length of groups of pictures.

Key words: video coding, side information, intraframe coding, motion compensation, frame interpolation