DocumentCode
3272132
Title
Improved rate control scheme in H.264 for real-time communication
Author
Xiaojing, Chen ; Lun-hui, Deng
Author_Institution
Eng. Center of Digital Audio & Video, Commun. Univ. of China, Beijing, China
fYear
2011
fDate
15-17 April 2011
Firstpage
1420
Lastpage
1423
Abstract
In this paper, we present an improved rate control scheme for real-time communication of H.264/AVC standard. Compared with JVT-G012, our algorithm has two main improving points: (a) adoption of a weighted MAD prediction, considering both spatial and temporal correlation, meanwhile reduce the complexity; (b) employ a linear R-Q model instead of the quadratic model. The result based on JM86 shows that the proposed scheme performs better than JVT-G012 with lower complexity. The relative PSNR is improved 0.3-0.5dB in QCIF sequences, and the bitrate fluctuation varies more smoothly.
Keywords
image sequences; video coding; H.264/AVC standard; JVT-G012; QCIF sequences; bitrate fluctuation; improved rate control scheme; linear R-Q model; quadratic model; relative PSNR; spatial correlation; temporal correlation; weighted MAD prediction; Bit rate; Complexity theory; Computational modeling; Encoding; PSNR; Predictive models; Streaming media; H.264/AVC; MAD prediction; linear R-Q model; rate control;
fLanguage
English
Publisher
ieee
Conference_Titel
Electric Information and Control Engineering (ICEICE), 2011 International Conference on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-8036-4
Type
conf
DOI
10.1109/ICEICE.2011.5777199
Filename
5777199
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