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CLC number: TN919

On-line Access: 2013-04-30

Received: 2012-11-23

Revision Accepted: 2013-03-14

Crosschecked: 2013-04-09

Cited: 2

Clicked: 2567

Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE C 2013 Vol.14 No.5 P.374-382

http://doi.org/10.1631/jzus.C1200333


Statistically uniform intra-block refresh algorithm for very low delay video communication


Author(s):  Rui Song, Yang-li Wang, Ye Han, Yun-song Li

Affiliation(s):  State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China

Corresponding email(s):   ruiScientif@gmail.com

Key Words:  Video coding, Intra refresh, Low delay


Rui Song, Yang-li Wang, Ye Han, Yun-song Li. Statistically uniform intra-block refresh algorithm for very low delay video communication[J]. Journal of Zhejiang University Science C, 2013, 14(5): 374-382.

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author="Rui Song, Yang-li Wang, Ye Han, Yun-song Li",
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%DOI 10.1631/jzus.C1200333

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T1 - Statistically uniform intra-block refresh algorithm for very low delay video communication
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A1 - Yang-li Wang
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A1 - Yun-song Li
J0 - Journal of Zhejiang University Science C
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.C1200333


Abstract: 
This paper focuses on the mechanism underlying the overall delay of a real-time video communication system from the time of capture at the encoder to the time of display at the decoder. A detailed analysis is presented to illustrate the delay problem. We then describe a statistically uniform intra-block refresh scheme for very low delay video communication. By scattering intra-blocks uniformly into continuous frames, the overall delay is significantly decreased, and object changes in the scene could be presented to the end user instantly. For comparison, the overall delay and the peak signal-to-noise ratio (PSNR) performance are tested. The experiment results show that an average of approximately 0.1 dB PSNR gain on average is obtained relative to random intra-macroblock refresh algorithm in H.264 JM, and the end-to-end delay performance is significantly improved.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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