VBR Rate Control for Perceptually Consistent Video Quality

被引：8
|
作者：
Han, Bo [1 ]
Zhou, Bingfeng [1 ]
机构：
[1] Peking Univ, Inst Comp Sci & Technol, Beijing, Peoples R China
来源：
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2008年 / 54卷 / 04期
基金：
中国国家自然科学基金;
关键词：
DVD; rate control; variable bit rate (VBR); consistent quality; rate distortion optimization (RDO); perceptual coding; HVS;
D O I：
10.1109/TCE.2008.4711253
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In Contrast with traditional VBR control strategies, such as constant QP and constant PSNR, we take the characteristics of human visual system into account and propose a two-pass VBR rate control for perceptually consistent video quality, mainly for D VD like video storage applications. We employ spatial-temporal complexity to evaluate the subjective visual qualify and propose a statistical quality relation between the Qstep and complexity. We further extend it to a RDO based practical Q-Complexity model to effectively guide our second-pass VBR encoding. In addition, we adopt a fast iterative search technique and a run-time bit production control mechanism to satisfy the constraint of fixed storage capacity while producing consistent perceived quality. Our experimental results from various test clips have demonstrated its efficiency and reliability, indicating a noticeable improvement on video quality.
引用
收藏
页码：1912 / 1919
页数：8
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