Joint source-channel coding for the scalable extension of H.264/MPEG-4 AVC

被引:0
|
作者
Stoufs, M. [1 ]
Munteanu, A. [1 ]
Cornelis, J. [1 ]
Schelkens, P. [1 ]
机构
[1] Vrije Univ Brussel, Dept Elect & Informat ETRO, Interdisciplinary Inst Broadband Technol IBBT, B-1050 Brussels, Belgium
关键词
scalable video coding; joint source-channel coding; unequal error protection;
D O I
10.1109/MMSP.2007.4412833
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
In this paper, we propose a joint source-channel coding (JSCC) methodology which minimizes the end-to-end distortion for the transmission of H.264/MPEG-4 scalable video over packet loss channels. The proposed JSCC-approach employs low-density parity-check codes in order to provide channel protection and relies on Lagrangian-based optimization techniques to derive the appropriate protection levels for each layer produced by the scalable source codec. Experiments show that our JSCC methodology delivers competitive results to state-of-the-art Lagrangian-based algorithms. However, in contrast to the state-of-the-art, our approach significantly reduces the computational complexity. We conclude that the proposed JSCC methodology provides optimized resilience against transmission errors in scalable video streaming over variable-bandwidth error-prone channels.
引用
收藏
页码:123 / 126
页数:4
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