基于空域相关性的快速HEVC帧间预测方法  

Fast Inter-mode Decision for HEVC Based on Spatial Correlation

作　　者：刘梅锋[1] 钟国韵[1] 徐洪珍[1] 吴有用[1] 

机构地区：[1]东华理工大学机械与电子工程学院,江西抚州344000

出　　处：《电视技术》2014年第17期80-84,共5页Video Engineering

基　　金：国家自然科学基金项目(61262001);江西省自然科学基金项目(20114BAB201043);江西省科技支撑计划项目(20112BBE50048)

摘　　要：分析了对应CU分块与其空域上相邻的4个CU之间的相关性，根据分析的最大出现概率的PU模式，以及当前PU分块与前一帧对应不同尺寸CU分块之间的空域相关性，提出了一种基于时域和空域相关性的快速HEVC帧间模式判决方法，跳过当前最大编码单元中各层CU中冗余的Pu模式，从而降低了编码的计算复杂度。实验结果显示，与HM7．0相比，该方法在仅仅损失了0．21％～1．66％压缩率和0．01～0．09dB峰值信噪比的前提下，降低了52_3％～63．5％的编码时间。The spatial correlation between the corresponding located block and its four neighboring CUs are analyzed. Based on this spatial correlation and the PU mode of the maximum probability of occurrence, a fast HEVC inter-mode decision algorithm is proposed. In this algorithm, the redundant inter-prediction modes in the largest coding unit are skipped to further reduce the coding computational complexity. The experiment results show that the proposed algorithm reduces 52.3%-63.5% coding time with only 0.21%-1.66% compression ratio loss and 0.01~0.09 dB peak signal-to-noise ratio degradation,compared tn HM7.0.

关 键 词：效率视频编码 编码单元 预测单元 帧间预测 

分 类 号：TN919.81[电子电信—通信与信息系统]