嵌入式多描述标量量化渐进图像传输

2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) Pub Date : 2003-07-06 DOI:10.1109/ICME.2003.1220970

A. Gavrilescu, A. Munteanu, P. Schelkens, J. Cornelis

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引用次数: 14

摘要

在可变带宽不可靠信道上的鲁棒渐进图像传输需要多描述编码(MDC)系统来产生高容错性的嵌入式比特流。所提出的嵌入式多描述标量量化器(EMDSQ)满足高冗余度、细粒度率自适应和每个描述的渐进传输的期望特征。实验结果表明，与先前文献中提出的多描述均匀标量量化器(MDUSQ)相比，EMDSQ具有更好的率失真性能。此外，提出了针对任意信道数的EMDSQ的广义形式，为实际多信道通信系统设计现实的编码器提供了可能。

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Embedded multiple description scalar quantizers for progressive image transmission

Robust progressive image transmission over unreliable channels with variable bandwidth requires multiple description coding (MDC) systems that produce highly error-resilient embedded bit-streams. 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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2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698)

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