Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (10): 152-155.

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

Fuzzy Error Concealment Algorithm for Video Sequence Transmission

Xie Sheng-li  Li Zheng-fang  Zhou Zhi-heng  Zeng De-lu   

  1. School of Electronic and Information Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2007-03-01 Online:2007-10-25 Published:2007-10-25
  • Contact: 谢胜利(1958-) ，男，教授，博士生导师，主要从事自适应信号处理研究. E-mail:adshlxie@scut. edu. cn
  • About author:谢胜利(1958-) ，男，教授，博士生导师，主要从事自适应信号处理研究.
  • Supported by:

    国家自然科学基金重点资助项目(U0635001) ;广东省自然科学团队研究项目(04205783) ;中国博士后科学基金资助项目( 20060390728) ;广东省自然科学基金资助项目(07006490)

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Abstract:

An error concealment algorithm based on fuzzy edge detection is proposed as a tool at the decoder side to recover the image information lost during the video sequence transmission. For a lost block , a fuzzy edge detector is used to obtain the edge information on the boundary pixels of its four neighboring blocks. With the obtained edge information , an energy function for boundary matching error is constructed. Then , the motion vector corresponding to the minimum of the energy function is used as the estimation of motion vector of the lost block. Simulated results show that , as compared with the existing error concealment algorithms , the proposed algorithm can recover the image with higher quality in both subjective visual evaluation and objective numerical comparison.

Key words: error concealment, fuzzy rule, edge detection, motion vector, video sequence