DocumentCode :
1248665
Title :
Robust error concealment algorithm for video decoder
Author :
Lee, Pei-Jun ; Chen, Mei-Juan
Author_Institution :
Inst. of Electr. Eng., Nat. Dong-Hwa Univ., Taiwan
Volume :
45
Issue :
3
fYear :
1999
fDate :
8/1/1999 12:00:00 AM
Firstpage :
851
Lastpage :
859
Abstract :
Compressed video can suffer severe degradation over practical communication channels. When bit errors occur during transmission and cannot be corrected by an error correction scheme, error concealment is needed to conceal the corrupted image at the receiver. It is well known that error recovery strategies by post-processing in the video decoder mitigate the effects of transmission errors by synthesizing information corresponding to the lost data by exploiting available redundancy in the decoded pictures. Previously, we have developed a technique that combines the side match criterion and overlapped motion compensation to make the effect of lost motion vectors subjectively imperceptible. In order to improve the performance, the robust and effective genetic algorithm (GA) and the side match criterion are used in this paper to get the best replacement for the lost image. Experimental results demonstrate that the proposed method has the better performance than the algorithms obtained by conventional temporal or spatial concealment techniques
Keywords :
data compression; decoding; genetic algorithms; image matching; image sequences; motion compensation; telecommunication channels; video coding; bit errors; communication channels; compressed video; corrupted image; decoded pictures; error recovery; experimental results; genetic algorithm; lost data; motion vectors; overlapped motion compensation; post-processing; receiver; redundancy; robust error concealment algorithm; side match criterion; spatial concealment; temporal concealment; transmission errors; video decoder; video sequences; Communication channels; Decoding; Degradation; Error correction; Genetic algorithms; Image coding; Motion compensation; Redundancy; Robustness; Video compression;
fLanguage :
English
Journal_Title :
Consumer Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-3063
Type :
jour
DOI :
10.1109/30.793622
Filename :
793622
Link To Document :
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