DocumentCode
1936015
Title
An Improved ROI-Based Rate Control Algorithm for H.264/AVC
Author
Li, Hang ; Wang, Zhibing ; Cui, Huijuan ; Tang, Kun
Author_Institution
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Volume
2
fYear
2006
fDate
16-20 2006
Abstract
An improved ROI-based rate control algorithm for H.264/AVC is proposed in this paper, which exploits the features of human visual system (HVS), with video content taken into account, to enhance perceptual quality as well as to reach the target bit rate simultaneously. A novel motion-based rate prediction model is employed which is more accurate and straightforward than the one in H.264/JM80. The bit allocation scheme is rate-distortion optimized by applying the Lagrange multiplier method. Extensive simulations show that proposed algorithm achieved better perceptually visual quality than H.264/JM80 dose while the PSNR is sustained
Keywords
image motion analysis; video coding; H.264/AVC; Lagrange multiplier method; ROI; bit allocation scheme; human visual system; motion-based rate prediction model; rate control algorithm; Automatic voltage control; Bit rate; Control systems; Humans; Lagrangian functions; Optimization methods; PSNR; Predictive models; Rate-distortion; Visual system;
fLanguage
English
Publisher
ieee
Conference_Titel
Signal Processing, 2006 8th International Conference on
Conference_Location
Beijing
Print_ISBN
0-7803-9736-3
Electronic_ISBN
0-7803-9736-3
Type
conf
DOI
10.1109/ICOSP.2006.345615
Filename
4129096
Link To Document