高技术通讯（英文版）2005，Vol.11Issue(2)：129-132,4.
A novel rate control method for H.264
A novel rate control method for H.264
摘要
Abstract
This paper presents a single-pass bit allocation and rate control method for H.264. We first present an R-Q model which can estimate the frame codingcomplexity before macroblock mode selection. Based on our R-Q model, a single-pass slice layer rate control scheme is developed, including bit allocation of the frame layer and the slice layer. At last, to enhance our rate control scheme with greater accuracy, we propose a fine rate control method based on mode selection by optimizing the Lagrange multiplier. The experiments show that compared to JVT-E069 and JVT-G012 proposed to JVT (Joint Video Coding Expert Group), our methodcan control the bit rate more accurately and obtain a higher PSNR. When the three schemes applied to the sequence with scene changes the PSNR of this paper is improved by 0.2～0.4dB.关键词
rate control/bit allocation/mode selection/scene changeKey words
rate control/bit allocation/mode selection/scene change引用本文复制引用
Li Qiang ,Wang Jia,Yu Songyu..A novel rate control method for H.264[J].高技术通讯（英文版）,2005,11(2):129-132,4.基金项目
Supported by the High Technology Research and Development Programme of China(No. 2002AA103087). （No. 2002AA103087）
