Title :
Distortion estimation in CBR channel and its application for H.264 rate control
Author :
Shin, IlHong ; Yoo, Jungju ; Hong, Jinwoo
Author_Institution :
Electron. Telecommun. Res. Inst., Daejeon
fDate :
June 23 2008-April 26 2008
Abstract :
When a video sequence is compressed with rate control for a constant bit rate (CBR) channel, the visual quality usually fluctuates according to image complexity. We introduced distortion models under the CBR condition to predict distortion during rate control. The paper also proposes a control method for improvement of visual quality in H.264 CBR condition. In the experiments, we analyzed the peak signal-to-noise ratio (PSNR), the variance of the PSNR, and the average difference of the PSNR between adjacent frames for various video sequences. Our method demonstrates a more stable visual quality without severe PSNR degradation.
Keywords :
channel estimation; video streaming; CBR channel; H.264 rate control; constant bit rate; distortion estimation; peak signal-to-noise ratio; Analysis of variance; Bit rate; Degradation; Image coding; Image sequence analysis; PSNR; Predictive models; Rate distortion theory; Signal analysis; Video sequences;
Conference_Titel :
Multimedia and Expo, 2008 IEEE International Conference on
Conference_Location :
Hannover
Print_ISBN :
978-1-4244-2570-9
Electronic_ISBN :
978-1-4244-2571-6
DOI :
10.1109/ICME.2008.4607528
