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Type SCI
Year ~ Keyword


Conference Paper Distortion Estimation in CBR Channel and Its Application for H.264 Rate Control
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Shin Il Hong, Yoo Jeong Ju, Hong Jin Woo
Issue Date
International Conference on Multimedia and Expo (ICME) 2008, pp.689-692
Project Code
08MR4600, Development of Open-IPTV (IPTV2.0) Technologies for Wired and Wireless Networks, Hwang Seung Ku
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