摘要
主要研究了AVS标准的视频压缩部分,简要介绍了编码过程中的关键技术。在PC机上采用VTune测试软件得出影响解码速度的瓶颈并且提出了一种优化方案。从数据流向入手,联合使用程序结构优化和SIMD指令集重写瓶颈模块代码的方案来优化AVS软件解码器,并且给出了运动补偿和反变换模块的具体优化方法。实验结果表明该优化方案可行并且解码器的运算速度得到了很大的提高。
Video compression part of AVS （Audio Video Coding Standard） was mainly studied and key technologies of code process were given. The bottleneck affecting decoding speed of AVS decoder was pointed out with VTune testing tools and an optimization scheme was given. The sotiware decoder was optimized starting from data flow and program structure optimization in combination of rewriting bottleneck module in SIMD instructions, The optimization method of motion compensation and inverse transform were also given. The results of experiment show the scheme is available and the speed of the decoder is highly improved.
出处
《计算机工程与设计》
CSCD
北大核心
2006年第4期618-621,共4页
Computer Engineering and Design
关键词
AVS
视频压缩
运动补偿
反变换
SIMD
优化
AVS
video compression
motion compensation
inverse transform
SIMD
optimization
