H.264解码器帧内预测模块的优化  

Intra Prediction Optimization of H. 264/AVC Decoder

作　　者：王光玮[1] 梁利平[1] 

机构地区：[1]中国科学院微电子研究所,北京100029

出　　处：《电视技术》2013年第19期24-26,81,共4页Video Engineering

摘　　要：提出一种H.264帧内预测的优化实现结构。该结构对帧内预测模块做了两方面的优化:一是结合环路滤波,去除了目前帧内预测模块中片上空间(SRAM)的冗余存储;二是针对4×4亮度块的预测模式获取过程相对复杂的特点,采取了预先判断并存储相邻块预测模式的措施。提出的帧内预测结构在减少片上存储空间需求的同时,减少了处理器和片外存储空间(SDRAM)的数据交互次数。由实验结果可知,相对于优化前,帧内预测模块的性能提高了10%以上。An optimized structure for intra prediction is proposed in this paper.Two optimization methods are adopted in this structure：one is redundant data on SRAM is abandoned,and according to the features of loop-filer in H.264/AVC decoder,another optimization is prediction models are pre-judged and stored.This two methods reduce the need of on-chip memory and the access cost.Experimental results show that the performance is improved by 10％.

关 键 词：H 264 帧内预测 预测模式 存储开销 

分 类 号：TN919.82[电子电信—通信与信息系统]