Multiple description image coding based on delta-sigma quantization with rate-distortion optimization

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
Yuhua FanJun Sun

Abstract

Recently, Østergaard and Zamir revealed the connection between multiple description coding and delta-sigma quantization (DSQ). The principle has been applied to image coding, with main focus on the framework where each block is processed separately. In this brief, we propose a two-channel multiple description image coding scheme that performs inter-block processing. The source image is first rearranged into a block sequence. Then, vector DSQ is performed with a bank of noise-shaping filters. Their coefficients as well as the quantization steps are chosen by a rate-distortion optimization algorithm. A post-processing algorithm is proposed for side decoding. Experiment results show the improvement achieved by the proposed scheme in terms of both peak signal-to-noise ratio values and subjective quality.

References

Mar 16, 2007·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Tammam TilloGabriella Olmo
Aug 11, 2007·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Kostadin DabovKaren Egiazarian
Feb 6, 2008·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Y WangA R Reibman
Feb 6, 2008·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Chengjie Tu, Trac D Tran
Apr 2, 2009·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Guoqian SunTrac D Tran
Jun 1, 1986·IEEE Transactions on Pattern Analysis and Machine Intelligence·J Canny

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