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Proceedings Paper

Improved rate control for MPEG-4 video transport over wireless channel
Author(s): Zhenzhong Chen; King Ngi Ngan; Chengji Zhao
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Paper Abstract

Video streaming over wireless channel is challenging due to a number of factors such as limited bandwidth and loss sensitivity. In this paper, we develop a novel rate control algorithm for MPEG-4 video coding. Unlike traditional rate control schemes, we jointly consider the encoding complexity variation and buffer variation as well as human visual properties to optimize the rate control efficiency. We also analyze the sensitivity of a macroblock (MB) as a result of bit errors and calculate its error sensitivity metric. This metric is used in unequal error protection (UEP) of the MB. Simulation results show that proposed approach can improve the decoded picture quality in wireless video coding and transmission.

Paper Details

Date Published: 23 June 2003
PDF: 12 pages
Proc. SPIE 5150, Visual Communications and Image Processing 2003, (23 June 2003); doi: 10.1117/12.502667
Show Author Affiliations
Zhenzhong Chen, Nanyang Technological Univ. (Singapore)
King Ngi Ngan, Nanyang Technological Univ. (Singapore)
Univ. of Western Australia (Australia)
Chengji Zhao, Nanyang Technological Univ. (Singapore)
Univ. of Western Australia (Australia)


Published in SPIE Proceedings Vol. 5150:
Visual Communications and Image Processing 2003
Touradj Ebrahimi; Thomas Sikora, Editor(s)

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