一种AVS-M的帧内预测模式快速选择算法

摘要

在分析AVS-M帧内预测模式选择原理的基础上,提出了一种基于边缘方向信息和时空相关性的帧内预测模式快速选择算法.该算法的I帧编码时间可降低17%～21%,而PSNR和输出码率均无明显变化,有效地降低AVS-M帧内编码的计算复杂度.%This paper proposes a kind of intraframe prediction mode selection fast algorithm based on edge direction information and space and time relevance on the analysis of AVS-M intraframe prediction mode selection principle. The I frame coding time of the algorithms can be reduced 17％～21％,but both PSNR and the output code rate have no obvious change,which can effectively reduce the computation complexity of AVS-M intraframe coding.