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Adaptive early termination mode decision for 3D-HEVC using inter-view and spatio-temporal correlations.pdf

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Adaptive early termination mode decision for 3D-HEVC using inter-view and spatio-temporal correlations.pdf

Int. J. Electron. Commun. (AEü) 70 (2016) 727–737 Contents lists available at ScienceDirect International Journal of Electronics and Communications (AEü) journal homepage: /locate/aeue Adaptive early termination mode decision for 3D-HEVC using inter-view and spatio-temporal correlations Qiuwen Zhang ?, Huawen Chang, Xinpeng Huang, Lixun Huang, Rijian Su, Yong Gan College of Computer and Communication Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China article info Article history: Received 10 July 2014 Accepted 22 February 2016 Keywords: 3D-HEVC Early termination Inter-view correlation Spatio-temporal correlation abstract 3D extension of high ef?ciency video coding (3D-HEVC) supports the coding of multi-view video and depth map. It adds new coding tools to the high ef?ciency video coding (HEVC) design, which improve the HEVC compression capabilities for 3D video. These coding tools achieve high coding ef?ciency, but it brings relatively high computational complexity which limits 3D-HEVC from practical applications. In this paper, we propose an adaptive early termination mode decision algorithm to reduce 3D-HEVC computational complexity. An experimental analysis is performed to study inter-view and spatio-temporal correlations in the coding information. Based on the analysis results, we can determine to skip some speci?c prediction mode at the early termination stage without a normal 3D-HEVC encoding process. The proposed algorithm uses the correlation between inter-view and spatio-temporal blocks. Experimental results demonstrate that the proposed algorithm can signi?cantly reduce computational complexity of 3D-HEVC encoding while maintaining almost the same rate-distortion (RD) performance. ? 2016 Elsevier GmbH. All rights reserved. 1. Introduction Stereoscopic display is considered as a better alternative to conventional two-dimensional (2D) display, since such display can provide important visual cues for the human brain to process three-