一种基于H.264/AVC的快速帧间模式选择算法  

Fast inter mode decision algorithm for H.264/AVC

作　　者：辛丰[1] 罗桂娥[1] 杨欣荣[1] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083

出　　处：《计算机应用》2008年第12期3157-3159,共3页journal of Computer Applications

摘　　要：为了解决帧间模式选择计算量大的问题,提出了一种快速算法。算法利用编码模式的利用率信息和时空相关性来预先判定当前宏块最可能的编码模式,从而大大加快了模式选择的过程。算法缩小了候选模式的范围,并采用阈值来提高预测准确度。仿真结果表明,该算法在编码质量只有轻微下降的情况下明显降低了计算复杂度。In order to resolve the high computation complexity in inter-mode decision, a novel fast algorithm was proposed. The proposed algorithm utilized the adoption information of coding mode and spatio-temporal correlation to judge maximum possible mode of cmTent macroblock beforehand, so it consequently accelerated the process of mode decision greatly. The proposed algorithm reduced the range of candidate modes and used thresholds to heighten precision of prediction. Simulation results demonstrate that the proposed algorithm can reduce eneoder complexity significantly while coding quality is only slightly decreased.

关 键 词：H.264/AVC标准 率失真优化 快速模式选择 阂值 时空相关性 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]