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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


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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%T Statistically uniform intra-block refresh algorithm for very low delay video communication
%A Rui Song
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%A Ye Han
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T1 - Statistically uniform intra-block refresh algorithm for very low delay video communication
A1 - Rui Song
A1 - Yang-li Wang
A1 - Ye Han
A1 - Yun-song Li
J0 - Journal of Zhejiang University Science C
VL - 14
IS - 5
SP - 374
EP - 382
%@ 1869-1951
Y1 - 2013
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.C1200333

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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