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Multiple Description Image Coding Based on Delta-Sigma Quantization With Rate-Distortion Optimization | IEEE Journals & Magazine | IEEE Xplore

Multiple Description Image Coding Based on Delta-Sigma Quantization With Rate-Distortion Optimization


Abstract:

Recently, Østergaard and Zamir revealed the connection between multiple description coding and delta-sigma quantization (DSQ). The principle has been applied to image cod...Show More

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.
Published in: IEEE Transactions on Image Processing ( Volume: 21, Issue: 9, September 2012)
Page(s): 4304 - 4309
Date of Publication: 03 May 2012

ISSN Information:

PubMed ID: 22575678

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References

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