摘要
在H．264视频编码标准中,宏块的编码有多种不同的方式。在对一个宏块进行编码之前,首先需要判断它的编码方式,一种有效的方法就是采用率失真优化进行模式的选择。在文中修改了经验公式,并以此对拉格朗日因数的选择做了分析。实验表明,该方法可以获取性能的提升。
In H. 264 video coding standards, there are many different kinds of coding mode for a macro block. Before coding a macro block, it is necessary to determine its coding mode. Rate - distortion optimization mode decision is an effective method. In this paper, the experimental formula is modified, and an analysis is made of the selection of Lagrange multiplier. Experimental results show that the proposed method can enhance the performance.
出处
《电子科技》
2007年第7期55-57,共3页
Electronic Science and Technology
关键词
H.264
率失真优化
模式选择
H. 264
rate - distortion optimization
mode decision
