基于Baseline的H.264去块效应滤波的快速算法  

Fast algorithm for H.264 deblocking filter based on Baseline

作　　者：陈石[1] 郑建宏[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2011年第4期427-431,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：重庆市科委科技攻关项目(CSTC;2009AA2037)~~

摘　　要：为了解决H.264/AVC的去块效应滤波算法中判断边界强度(boundary strength,BS)计算量大的问题,提出一种快速判定BS的算法。通过详细分析H.264编解码过程的特点,结合Baseline Profile中边界强度值的出现规律,优化了原始的BS判定流程并且减少了计算量。通过Intel VTune试验证明,在不影响主观质量的基础上以较小的PSNR(peak signal to noise ration)损耗获得了大约56%的时间减少量,从而减小去块效应滤波器的复杂度,有助于H.264解码器的硬件实现。For H. 264/AVC, the complexity of judgment of boundary, strength is a big problem in deblocking filter algorithm. The paper proposes a fast algorithm to judge BS. According to the characteristic of H. 264/AVC standard amt the rule of boundary strength in Baseline Profile of H. 264, this method is able to reduce the amount of calculation. And it is proved by the experimental simulation of JM8.6 that there is almost 56% of time eonsmning in deblcoking filter with a bit loss of PSNR and no infltience on picture subject quality. It reduces the complexity of deblocking filter in H. 264, and is good for harden, are implementation of H. 264 decoder.

关 键 词：H.264/AVC 去块效应滤波 边界强度(BS) 

分 类 号：TN919.82[电子电信—通信与信息系统]