基于图像行/列流水线的AVS快速模式判决的设计

摘要

A design of fast mode decision based on image block row/column pipeline is provided in this paper. Firstly, a method of fast mode decision is presented according to the features and dependence of different modes in A VS. Secondly, the usual block pipeline is divided into row/column pipeline to minimize the idle cycle of all the processing modules in the pipeline. Finally, the 1 920×1 080 high definition video encoding 30 frames per second with a system frequency of 135 MHz is implemented, and the performance is improved 1.5 times compared with block pipeline.%提供了一种基于图像像素块行/列流水线的快速模式判决的设计.首先根据AVS中不同模式的特性以及相互间数据依赖关系,给出了一种快速模式判决方法.并通过将通常的块级流水合理拆分成行/列级流水,使得流水线中所有处理模块的空转周期降到最低,从而能够以135 MHz的系统频率实现30f/s(帧每秒)约1920×1080高清视频图像编码,与块级流水相比性能提高了1.5倍.