Improved rate control for MPEG-4 video transport over wireless channel

Zhenzhong Chen; King Ngi Ngan; Chengji Zhao

doi:10.1117/12.502667

23 June 2003 Improved rate control for MPEG-4 video transport over wireless channel

Zhenzhong Chen, King Ngi Ngan, Chengji Zhao

Proceedings Volume 5150, Visual Communications and Image Processing 2003; (2003) https://doi.org/10.1117/12.502667
Event: Visual Communications and Image Processing 2003, 2003, Lugano, Switzerland

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.

Citation Download Citation

Zhenzhong Chen, King Ngi Ngan, and Chengji Zhao "Improved rate control for MPEG-4 video transport over wireless channel", Proc. SPIE 5150, Visual Communications and Image Processing 2003, (23 June 2003); https://doi.org/10.1117/12.502667

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