An Efficient Two-stage Error Detector Based on Syntax and Continuity

In video transmission, the compressed signal is extremely vulnerable to bit errors. Error concealment is widely used in video decoder to recover corrupted frames. Due to the use of variable length codes (VLCs), a single bit error in block-based bitstream may propagate to following of this slice. Esp...

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Bibliographic Details
Published in:IEEE transactions on consumer electronics 2007-11, Vol.53 (4), p.1276-1280
Main Authors: Zhang, Huanhuan, Wang, Jin, Liu, Yunqiang, Wang, Jia, Gao, Yizhi
Format: Article
Language:English
Subjects:
Asia
Blocking
Codecs
Continuity
Decoding
Detectors
Discrete cosine transforms
Electronics
Error correction
Error detection
Errors
Forward error correction
Motion compensation
Motion detection
Syntax
Video compression
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Summary:In video transmission, the compressed signal is extremely vulnerable to bit errors. Error concealment is widely used in video decoder to recover corrupted frames. Due to the use of variable length codes (VLCs), a single bit error in block-based bitstream may propagate to following of this slice. Especially, the effectiveness of error concealment technique relies heavily on correctly locating errors. In this paper, an error detector based on syntax and continuity which consists of two stages is proposed. The first stage is to find erroneous slice according to checking constraints imposed on video bitstream syntax or detecting special error patterns. In the second stage, the precise position of the first erroneous macroblock (MB) is found based on the continuity of spatial or temporal data of neighbor MBs. Simulation results demonstrate that the proposed method improves performance of error detection significantly compared with the traditional syntax-based method.
ISSN:0098-3063
1558-4127
DOI:10.1109/TCE.2007.4429212