Spatio-temporal correlation based fast inter mode decision for HEVC

被引：0
|
作者：
Zhu W. [1 ]
Zhang X.-H. [1 ]
Wang C.-S. [1 ]
Zhang H. [2 ]
机构：
[1] College of Information Engineering, Zhejiang University of Technology, Hangzhou
[2] School of Computer Science and Technology, Hangzhou Dianzi University, Hangzhou
来源：
Tongxin Xuebao/Journal on Communications | 2016年 / 37卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Coding tree unit; High efficiency video coding; Prediction unit; Spatio-temporal correlation;
D O I：
10.11959/j.issn.1000-436x.2016073
中图分类号：
学科分类号：
摘要：
The new generation high efficiency video coding (HEVC) standard adopts coding tree unit (CTU) quadtree partition technology and ten inter prediction unit (PU) modes to improve compression efficiency significantly, but it brings in an enormous encoding computational complexity. A spatio-temporal correlation based fast inter mode decision algorithm for HEVC was proposed to reduce partition times of coding unit (CU) and inter PU mode candidates. First, the spatio-temporal correlation of depth information among the current CTU, the same located CTU in the reference frame and the spatial neighbor CTU in the current frame are utilized to predict depth range of the current CTU. Then, the spatial correlation of optimal PU modes between the current CU and its parent-CU was analyzed. And the rate-distortion (RD) costs of the estimated PU modes of the current CU were also used. Based on these, the redundant inter PU modes of the current CU are skipped. The experiment results demonstrate that as compared to the HEVC test model (HM), the proposed algorithm saves about 52% encoding time under different encoding configurations, and it maintains a good RD performance. When compared to HM with fast mode decision algorithms enabled, the proposed algorithm further saves about 30% encoding time. © 2016, Editorial Board of Journal on Communications. All right reserved.
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页码：64 / 73
页数：9
相关论文
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