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Optical Engineering

Rate control based on an incremental proportional-integral-differential algorithm
Author(s): Liquan Shen; Zhi Liu; Zhao-Yang Zhang; Xu-li Shi
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Paper Abstract

Since the current rate control schemes in H.264 do not present the capability of efficient frame-level bit allocation, the video quality varies greatly for sequences with scene cuts or large motions. To overcome that limitation, we propose a rate control scheme based on the incremental proportional-integral-differential (PID) algorithm. That algorithm is introduced to control the buffer and decrease the influence of buffer surface fluctuation on the process of frame-level bit allocation. Extensive simulation results show that this rate control scheme, without expensive computational complexity added, decreases the average video quality variations by 21.07%.

Paper Details

Date Published: 1 July 2007
PDF: 7 pages
Opt. Eng. 46(7) 077002 doi: 10.1117/1.2754303
Published in: Optical Engineering Volume 46, Issue 7
Show Author Affiliations
Liquan Shen, Shanghai Univ. (China)
Zhi Liu, Shanghai Univ. (China)
Zhao-Yang Zhang, Shanghai Univ. (China)
Xu-li Shi, Shanghai Univ. (China)


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