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Proceedings Paper

A fast content-adaptive spatial error concealment for wireless video communication
Author(s): Ye Yu; JianHua Lu; JunLi Zheng; Changwen Chen
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Paper Abstract

Compressed video data is very vulnerable to channel disturbances when transmitted through time-varying wireless channel with high value of BER. In this paper, a novel efficient content-adaptive spatial error concealment is presented. Specifically, we adopt a finite state Markov chain as a mathematically tractable model for wireless channels and investigate the corresponding error patterns of video transmitted under different channel conditions. Then, by analyzing the multiple features extracted from the surrounding available blocks, the proposed algorithm first estimates the characteristics of the error block (EB), and then suitable methods are employed to conceal the EB accordingly. Simulation results demonstrate that the proposed algorithm may obtain very good subjective quality whether the content in the EB is with or without complex texture, while being superior to existing approaches for countermeasure of artifacts caused by wireless communications. It is also noted that the proposed method is quite applicable in practice due to its low computational complexity comparing with the conventional methods.

Paper Details

Date Published: 24 October 2005
PDF: 12 pages
Proc. SPIE 6015, Multimedia Systems and Applications VIII, 60150H (24 October 2005); doi: 10.1117/12.634348
Show Author Affiliations
Ye Yu, Tsinghua Univ. (China)
JianHua Lu, Tsinghua Univ. (China)
JunLi Zheng, Tsinghua Univ. (China)
Changwen Chen, Florida Institute of Technology (United States)

Published in SPIE Proceedings Vol. 6015:
Multimedia Systems and Applications VIII
Anthony Vetro; Chang Wen Chen; C.-C. J. Kuo; Tong Zhang; Qi Tian; John R. Smith, Editor(s)

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