基于BS预判的H.264去块滤波优化算法  

Optimization of deblocking filter for H.264/AVC based on pre-judging BS

作　　者：高媛[1] 胡瑞敏[1] 陈皓[1] 

机构地区：[1]武汉大学国家多媒体软件工程计算研究中心,武汉430072

出　　处：《计算机工程与应用》2007年第34期38-40,共3页Computer Engineering and Applications

基　　金：国家自然科学基金(the National Natural Science Foundation of China under Grant No.60472040)。

摘　　要：首先介绍了H.264去块滤波的滤波强度计算原理,并基于滤波强度的计算量为去块滤波过程中最大的部分,提出了一种滤波强度提前预判的优化算法。通过仿真实验证明该算法在对解码图像质量没有任何影响的情况下较标准算法降低了75%左右的滤波运算时间,有效地缓解了H.264解码运算复杂度,提高整体解码时间,以有助于实时应用的实现。This paper firstly analyzes the theory, of computing BS in tile deblocking filter system.And because the most computational resource consumed is the determination of BS,proposes an optimized pre-judging BS algorithm to reduce the computational complexity.The computer simulation results indicate that tile proposed algorithm can decrease approximately 75% computing time compares to the JM filter algorithm,and the PSNR is the same to JM.The reduction of the computational complexity and the great efficiency of decoder are good for the real time application of H.264 decoder.

关 键 词：H.264/AVC 去块滤波 滤波强度 预判 

分 类 号：TN919.81[电子电信—通信与信息系统]