Fast Mode Decision Based on Gradient Information in 3D-HEVC

Qian Zhang; Ruihai Jing; Bin Wang; Pengtao Cui; Chao Zhou; Tao Yan; Suraphon Kanyukt; Wen Si

doi:10.1109/ACCESS.2019.2940706

IEEE Access (Jan 2019)

Fast Mode Decision Based on Gradient Information in 3D-HEVC

Qian Zhang,
Ruihai Jing,
Bin Wang,
Pengtao Cui,
Chao Zhou,
Tao Yan,
Suraphon Kanyukt,
Wen Si

Affiliations

Qian Zhang: College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai, China
Ruihai Jing: College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai, China
Bin Wang: College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai, China
Pengtao Cui: College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai, China
Chao Zhou: College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai, China
Tao Yan: School of Information Engineering, Putian University, Putian, China
Suraphon Kanyukt: College of Information and Computer Science, Shanghai Business School, Shanghai, China
Wen Si: ORCiD; College of Information and Computer Science, Shanghai Business School, Shanghai, China

DOI: https://doi.org/10.1109/ACCESS.2019.2940706
Journal volume & issue: Vol. 7
pp. 135448 – 135456

Abstract

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The 3D extension of High Efficiency Video Coding (3D-HEVC) introduce Depth Modeling Mode (DMM) and 35 conventional intra modes to enhance the quality of coding, while bringing unacceptable computational complexity during the process of rough mode decision (RMD) and most probable mode (MPM). In this paper, we proposed a fast mode decision algorithm for texture map and depth map coding based on gradient information. Firstly, analyzing the characteristics of predict units (PU) in different intra mode applications that obtain the lowest RD-cost,then extracting the gradient information of PU to classify the PU into three types of gradient blocks and selecting appropriate candidate modes for the PU,thereby avoiding search each mode in coding process and skip the process of RMD and MPM early. Experimental results show that the proposed algorithm can achieve average 30.6% time saving with negligible reduction of coding performance.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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