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2000
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DCT Coefficient-Based Error Detection Technique for Compressed Video Stream

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DCT Coefficient-Based Error Detection Technique for Compressed Video Stream
: In the process of transmission of digital encoded video bit streams over physical network, the data is corrupted by random bit errors, which has a several effect on the decoded video quality. The success of an error concealment algorithm depends heavily on the detection of the corrupted regions. In this paper we proposes a new error detection algorithm for discrete cosine transfom based video coding. Our algorithm detects so far undetectable erroneous regions with a very little increase in computational complexity. We show that erroneous blocks in the decoded frames can be detected monitoring the variation of average energy from block to block. To avoid false detection due to the presence of strong edges we employed a very fast DCT coefficient based edge detection algorithm. Computersimulation shows that the quality of the recovered image is significantly improved in comparison to the well-knownmethods.
K. Bhattacharyya, H. S. Jamadagni
Added 31 Jul 2010
Updated 31 Jul 2010
Type Conference
Year 2000
Where ICMCS
Authors K. Bhattacharyya, H. S. Jamadagni
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