Error-resilient decoding of randomly impaired MPEG-2 bit stream

JongWon Kim; Jong-Wook Park; Sang Uk Lee

doi:10.1117/12.233300

27 February 1996 Error-resilient decoding of randomly impaired MPEG-2 bit stream

JongWon Kim, Jong-Wook Park, Sang Uk Lee

Proceedings Volume 2727, Visual Communications and Image Processing '96; (1996) https://doi.org/10.1117/12.233300
Event: Visual Communications and Image Processing '96, 1996, Orlando, FL, United States

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.

Citation Download Citation

JongWon Kim, Jong-Wook Park, and Sang Uk Lee "Error-resilient decoding of randomly impaired MPEG-2 bit stream", Proc. SPIE 2727, Visual Communications and Image Processing '96, (27 February 1996); https://doi.org/10.1117/12.233300

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