H.264/AVC解码器亚象素点插值滤波优化  

Optimization of Sub-Pixel Interpolation Filter for H.264/AVC Decoder

作　　者：王明明[1] 叶甜春[1] 马成炎[1] 

机构地区：[1]中国科学院微电子研究所,北京100029

出　　处：《电子器件》2009年第3期513-516,共4页Chinese Journal of Electron Devices

摘　　要：亚象素点插值滤波是H.264/AVC解码过程中计算量比较大的步骤之一,大约占全部解码计算量的25%左右。通过分析插值滤波操作的计算复杂度,从算法级和结构级对亚象素点插值滤波进行了改进,对软件或硬件的实现都有较大的指导意义。在ARM9实验平台上进行了性能分析,实验表明,经过优化的亚象素点插值滤波比直接实现大约有43%的性能提高。Sub-pixel interpolation filter is one of the heavy computational steps, consume about 25% of the whole decoding computation. By analyzing the computational complexity, sub-pixel interpolation optimization is done both architecturally and algorithmieally, which will guide either software or hardware implementation. A performance analysis on the ARM9 platform shows that optimized sub-pixel interpolation filter saves about 43% computation than the direct implementation.

关 键 词：H.264/AVC 亚象素点 插值滤波 ARM920T 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]