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Hash signature saving in distributed video coding

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Abstract

In transform-domain distributed video coding (DVC), the correlation noises (denoted as N) between the source block and its temporal predictor can be modeled as Laplacian random variables. In this paper we propose that the noises (denoted as N′) between the source block and its co-located block in a reference frame can also be modeled as Laplacian random variables. Furthermore, it is possible to exploit the relationship between N and N′ to improve the performance of the DVC system. A practical scheme based on theoretical insights, the hash signature saving scheme, is proposed. Experimental results show that the proposed scheme saves on average 83.2% of hash signatures, 13.3% of bit-rate, and 3.9% of encoding time.

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Authors and Affiliations

  1. Institute of Information and Communication Engineering, Zhejiang University, Hangzhou, 310027, China

    Xin-hao Chen, Xing-guo Zhu, Xiao-lin Shen & Lu Yu

  2. Zhejiang Provincial Key Laboratory of Information Network Technology, Hangzhou, 310027, China

    Xin-hao Chen, Xing-guo Zhu, Xiao-lin Shen & Lu Yu

Authors
  1. Xin-hao Chen
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  2. Xing-guo Zhu
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  3. Xiao-lin Shen
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  4. Lu Yu
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Correspondence to Lu Yu.

Additional information

Project supported by the National Basic Research Program (973) of China (No. 2009CB320903) and the Program for New Century Excellent Talents in University

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Chen, Xh., Zhu, Xg., Shen, Xl. et al. Hash signature saving in distributed video coding. J. Zhejiang Univ. - Sci. C 12, 163–170 (2011). https://doi.org/10.1631/jzus.C1000008

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  • DOI: https://doi.org/10.1631/jzus.C1000008

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