Journal of Zhejiang University SCIENCE C

, Volume 12, Issue 2, pp 163–170 | Cite as

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.

Key words

Distributed video coding (DVC) Hash Laplacian 

CLC number

TN919.8 

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Copyright information

© Journal of Zhejiang University Science Editorial Office and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Xin-hao Chen
    • 1
    • 2
  • Xing-guo Zhu
    • 1
    • 2
  • Xiao-lin Shen
    • 1
    • 2
  • Lu Yu
    • 1
    • 2
  1. 1.Institute of Information and Communication EngineeringZhejiang UniversityHangzhouChina
  2. 2.Zhejiang Provincial Key Laboratory of Information Network TechnologyHangzhouChina

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