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Multimedia Tools and Applications

, Volume 68, Issue 3, pp 863–875 | Cite as

Optimizing the deadzone width to improve the polyphase-based multiple description coding

  • Chunyu LinEmail author
  • Tammam Tillo
  • Jimin Xiao
  • Yao Zhao
Article
  • 134 Downloads

Abstract

The polyphase-based mechanism is the basis of many multiple descriptions coding schemes. Its main drawback is the inefficient exploitation of the inserted redundancy, especially when the redundancy is large. In this paper we propose a novel approach that uses mid-tread quantizers with tunable deadzone, in order to efficiently exploit the inserted redundancy. In particular, the deadzone width is selected based on the statistical distribution of the data, and the approximated level of redundancy to be inserted. The proposed approach is tailored for those codecs that use mid-tread quantizers with tunable step-size and deadzone width. This is particularly interesting given that the majority of codecs use this topology of quantization, and they rarely allow changing it. Moreover, the proposed scheme can be extended to the case of more than two descriptions. Finally, it is worth reporting that the results of the proposed approach outperform that of state-of-the-art schemes. In fact with the same side performance, the central quality can achieve up to 1 dB gain.

Keywords

Image coding Multiple description coding Scalar quantization 

Notes

Acknowledgements

This work was supported by 973 Program, under Grant 2011CB302204, the National Science Foundation of China for Distinguished Young Scholars, under Grant 61025013, Sino-Singapore JRP, under Grant 2010DFA11010, National Natural Science Foundation of China, under Grants 60776794, 60972085.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Chunyu Lin
    • 1
    • 2
    Email author
  • Tammam Tillo
    • 3
  • Jimin Xiao
    • 3
    • 4
  • Yao Zhao
    • 1
    • 2
    • 5
  1. 1.Institute of Information ScienceBeijing Jiaotong UniversityBeijingChina
  2. 2.Beijing Key Laboratory of Advanced Information Science and NetworkBeijingChina
  3. 3.Department of Electrical and Electronic EngineeringXi’an Jiaotong-Liverpool UniversitySuzhouChina
  4. 4.Department of Electrical Engineering and ElectronicsUniversity of LiverpoolLiverpoolUK
  5. 5.State Key Laboratory of Rail Traffic Control and SafetyBeijing Jiaotong UniversityBeijingChina

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