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Proceedings Paper

Error-resilient decoding of randomly impaired MPEG-2 bit stream
Author(s): JongWon Kim; Jong-Wook Park; Sang Uk Lee
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Paper Abstract

This paper presents an error resilient decoding technique based on the error detection and DCT coefficients recovery for the randomly impaired MPEG-2 bit stream. First, to simulate a more realistic and severe environment, we do not rely on the network support of the packet transport/adaptation protocol for error detection. Therefore, the macroblocks corrupted by the random bit errors are identified by a layered error detection algorithm. Next, assuming a smoothness constraint on image intensity, an object function which describes the inter-sample variations at the boundaries of the lost macroblock and the adjacent macroblocks is defined, and the damaged DCT coefficients are optimally recovered by solving a set of linear equations. Computer simulation results show that the quality of a recovered image is significantly improved even when the bit error rate is as high as 10-5.

Paper Details

Date Published: 27 February 1996
PDF: 11 pages
Proc. SPIE 2727, Visual Communications and Image Processing '96, (27 February 1996); doi: 10.1117/12.233300
Show Author Affiliations
JongWon Kim, KongJu National Univ. (South Korea)
Jong-Wook Park, Seoul National Univ. (South Korea)
Sang Uk Lee, Seoul National Univ. (South Korea)


Published in SPIE Proceedings Vol. 2727:
Visual Communications and Image Processing '96
Rashid Ansari; Mark J. T. Smith, Editor(s)

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