Optimized Multiple Description Lattice Vector Quantization for Wavelet Image Coding
Optimized Multiple Description Lattice Vector Quantization for Wavelet Image Coding
复制标题
小波图像编码的优化多重描述格矢量量化
DOI:
10.1109/tcsvt.2007.898646
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发表时间:
2007-07
影响因子:
8.4
通讯作者:
中科院分区:
文献类型:
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作者:
Multiple description (MD) coding is a promising alternative for robust transmission of information over non-prioritized and unpredictable networks. In this paper, an effective MD image coding scheme is introduced based on the MD lattice vector quantization (MDLVQ) for the wavelet transformed images. In view of the characteristics of wavelet coefficients in different frequency subbands, MDLVQ is applied in an optimized way, including an appropriate construction of wavelet coefficient vectors, the optimization of MDLVQ encoding parameters such as the choice of sublattice index values and the quantization accuracy for different subbands. More importantly, optimized side decoding is employed to predict lost information based on inter-vector correlation and an alternative transmission way for further reducing side distortion. Experimental results validate the effectiveness of the proposed scheme with better performance than some other tested MD image codecs including that based on optimized MD scalar quantization.
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DOI:
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发表时间:
1995-12
期刊:
--
影响因子:
--
作者:
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通讯作者:
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DOI:
10.1109/icassp.2004.1326478
发表时间:
2004-05
期刊:
2004 IEEE International Conference on Acoustics, Speech, and Signal Processing
影响因子:
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作者:
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通讯作者:
C. Tian;S. Hemami
影响因子:
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DOI:
10.1109/mmsp.1997.602671
发表时间:
1997-06
期刊:
Proceedings of First Signal Processing Society Workshop on Multimedia Signal Processing
影响因子:
--
作者:
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通讯作者:
Yao Wang;M. Orchard;A. Reibman
影响因子:
3.9
作者:
C. Tian;S. Hemami
通讯作者:
C. Tian;S. Hemami