Embedded multiple description scalar quantizers for progressive image transmission

被引：0
|
作者：
Gavrilescu, AI [1 ]
Munteanu, A [1 ]
Schelkens, P [1 ]
Cornelis, J [1 ]
机构：
[1] Free Univ Brussels, Dept Elect & Informat Proc, B-1050 Brussels, Belgium
来源：
2003 INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOL I, PROCEEDINGS | 2003年
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：
Robust progressive image transmission over unreliable channels with variable bandwidth requires Multiple Description Coding (MDC) systems that produce highly error-resilient embedded bitstreams. The proposed Embedded Multiple Description Scalar Quantizers (EMDSQ) meet the desired features consisting of a high redundancy level, fine grain rate adaptation and progressive transmission of each description. Experimental results show that EMDSQ yield better rate-distortion performance in comparison to the Multiple Description Uniform Scalar Quantizers (MDUSQ) previously proposed in the literature. Moreover, the generalized form of EMDSQ targeting an arbitrary number of channels is proposed, which offers the possibility of designing realistic coders for practical multi-channel communication systems.
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页码：525 / 528
页数：4
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