HEVC帧间预测编码单元深度快速选择算法  

Fast Coding Unit Depth Selection Algorithm for Inter-frame Prediction of HEVC

作　　者：张盛峰[1] 汪仟 黄胜[1] 肖傲 ZHANG Shengfeng;WANG Qian;HUANG Sheng;XIAO Ao(Key Laboratory of Optical Communication and Network, Chongqing University of Posts and Telecommunication,Chongqing 400065,China)

机构地区：[1]重庆邮电大学光通信与网络重点实验室,重庆400065

出　　处：《计算机工程》2018年第10期258-263,共6页Computer Engineering

基　　金：国家自然科学基金(61371096;61571072);国家留学基金(201708500034);重庆市基础与前沿研究计划项目(cstc2015jcyjA4)

摘　　要：为降低高效视频编码(HEVC)帧间预测编码的计算复杂度,提出一种快速编码单元(CU)深度选择算法。利用当前CU与时空域相邻CU的深度信息,初步预测当前CU的深度范围,并根据当前CU与邻近CU的运动矢量信息对当前CU深度选择做进一步终止判断。实验结果表明,该算法与HEVC测试模型(HM16. 0)相比,在低时延和随机访问2种编码配置下,码率分别仅增加0. 93%和1. 01%,而编码时间减少了29. 1%和30. 3%。In order to reduce the computational complexity of High Efficiency Video Coding(HEVC)inter-frame prediction,a fast Coding Unit(CU)depth selection algorithm is proposed in this paper.Firstly,the spatio-temporal correlation of depth information among the current CU and adjacent CU is used to preliminary forecast the depth of the current CU.Secondly,the CU depth of current CU is judged further for stop based on the Motion Vector(MV)information of current CU and adjacent CU.The experimental results demonstrate that,compared with the HEVC test model(HM16.0),under two coding structures of low-delay and random-access,the proposed algorithm increases bit rate by 0.93%and 1.01%and saves coding time by 29.1%and 30.3%,respectively with the same objective quality.

关 键 词：高效视频编码 帧间预测 计算复杂度 编码单元 深度选择 运动矢量 

分 类 号：TN919.8[电子电信—通信与信息系统]