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Conference Paper Distortion Estimation in CBR Channel and Its Application for H.264 Rate Control
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Authors
Il Hong Shin, Jung Ju Yoo, Jin Woo Hong
Issue Date
2008-06
Citation
International Conference on Multimedia and Expo (ICME) 2008, pp.689-692
Language
English
Type
Conference Paper
DOI
https://dx.doi.org/10.1109/ICME.2008.4607528
Project Code
08MR4600, Development of Open-IPTV (IPTV2.0) Technologies for Wired and Wireless Networks, Hwang Seung Ku
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. © 2008 IEEE.
KSP Keywords
Constant bit rate, Distortion estimation, Image complexity, Peak-Signal-to-Noise-Ratio(PSNR), Rate Control, Signal noise ratio(SNR), Visual Quality, control method, video sequences