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Two-Stage Diversity-Based Multiple Description Image Coding

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3 Author(s)
Chunyu Lin ; Inst. of Inf. Sci., Beijing Jiaotong Univ., Beijing ; Yao Zhao ; Ce Zhu

In this letter, a diversity-based two-description image coding scheme is firstly presented and analyzed, for which a two-stage coding is introduced to facilitate the tuning of central/side distortion tradeoff. By subsampling the central decoded errors from the first stage to constitute the second part for each description, respectively, we show that not only the central distortion but also the side distortion can be reduced with the second stage information. We further generalize the proposed scheme to 4-description coding. Experiment results demonstrate that the proposed scheme outperforms the state-of-the-art techniques in terms of both central and side coding performance.

Published in:

IEEE Signal Processing Letters  (Volume:15 )