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Scientific Programming Volume 2019 ,2019-01-15
Low-Complexity Texture Video Coding Based on Motion Homogeneity for 3D-HEVC
Research Article
Qiuwen Zhang 1 Shuaichao Wei 1 Rijian Su 1
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DOI:10.1155/2019/1574081
Received 2018-07-16, accepted for publication 2018-12-17, Published 2018-12-17
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摘要

Three-dimensional extension of the high efficiency video coding (3D-HEVC) is an emerging international video compression standard for multiview video system applications. Similar to HEVC, a computationally expensive mode decision is performed using all depth levels and prediction modes to select the least rate-distortion (RD) cost for each coding unit (CU). In addition, new tools and intercomponent prediction techniques have been introduced to 3D-HEVC for improving the compression efficiency of the multiview texture videos. These techniques, despite achieving the highest texture video coding efficiency, involve extremely high-complex procedures, thus limiting 3D-HEVC encoders in practical applications. In this paper, a fast texture video coding method based on motion homogeneity is proposed to reduce 3D-HEVC computational complexity. Because the multiview texture videos instantly represent the same scene at the same time (considering that the optimal CU depth level and prediction modes are highly multiview content dependent), it is not efficient to use all depth levels and prediction modes in 3D-HEVC. The motion homogeneity model of a CU is first studied according to the motion vectors and prediction modes from the corresponding CUs. Based on this model, we present three efficient texture video coding approaches, such as the fast depth level range determination, early SKIP/Merge mode decision, and adaptive motion search range adjustment. Experimental results demonstrate that the proposed overall method can save 56.6% encoding time with only trivial coding efficiency degradation.

授权许可

Copyright © 2019 Qiuwen Zhang et al. 2019
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

通讯作者

Rijian Su.College of Computer and Communication Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China, zzuli.edu.cn.rijiansu@126.com

推荐引用方式

Qiuwen Zhang,Shuaichao Wei,Rijian Su. Low-Complexity Texture Video Coding Based on Motion Homogeneity for 3D-HEVC. Scientific Programming ,Vol.2019(2019)

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