A rate control algorithm for DCT-based video coding using simple rate estimation and linear source model

被引：15
|
作者：
Lee, JY [1 ]
Park, HW
机构：
[1] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea
[2] SK Telecom, Seoul 100999, South Korea
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY | 2005年 / 15卷 / 09期
关键词：
bit allocation; H263; rate control; rate estimation; rate regulation; video coding;
D O I：
10.1109/TCSVT.2005.852628
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：
A new rate control algorithm is proposed, which is based on so-called rho-domain rate-distortion analysis. rho is defined as the percentage of zero discrete cosine transform coefficients in a frame, and is known to be correlated with the compressed bit rate. Using a simple rate estimation method based on a variable length code table, the linear rate model of rate-rho relation is constructed. The linear rate model is applied to the frame-level as well as the macroblock-level rate control. The proposed rate control algorithm provides a more accurate rate regulation, a better quality of picture, and lower computation amount than H.263 TMN8 rate control.
引用
收藏
页码：1077 / 1085
页数：9
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