Robust distributed video compression based on multilevel coset codes

被引:0
|
作者
Majumdar, A [1 ]
Chou, J [1 ]
Ramchandran, K [1 ]
机构
[1] Univ Calif Berkeley, Berkeley, CA 94720 USA
关键词
D O I
暂无
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
A new video coding paradigm (PRISM) built on distributed coding principles has recently been proposed in [1], [2]. The PRISM framework rests heavily on channel coding concepts. The basic idea is to do intra-frame coding but to approach the coding efficiency of motion-compensated inter-frame coding by using channel codes to derive a coding rate rebate by "exploiting" the correlated side-information present in the form of previous temporal frames at the decoder. The coding strategy described in [1], [2],vas limited to rate-1/2 trellis coset codes, which limit the granularity at which the correlated side-information can be exploited. In this work, we generalize the coset coding framework to multi-level codes which allow more flexible encoding rates and the capability to exploit correlations with much finer granularity. Simulation results validate the better compression performance (of the order of 1 dB for typical tests) of the multilevel framework.
引用
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页码:845 / 849
页数:5
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