Journal of Shanghai University(Natural Science Edition) ›› 2014, Vol. 20 ›› Issue (4): 450-457.doi: 10.3969/j.issn.1007-2861.2103.07.043

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Edge Based Depth Coding for Virtual View Synthesis

LIU Chao, AN Ping, ZHAO Bing, YAN Ji-chen, ZHANG Zhao-yang   

  1. School of Communication and Information Engineering, Key Laboratory of Ministry of Education for Advanced Display and System Application, Shanghai University, Shanghai 200072, China
  • Received:2013-10-22 Online:2014-08-25 Published:2014-08-25

Abstract: Depth maps typically consist of homogeneous areas partitioned by sharp edges representing depth discontinuities, and sharp discontinuities are important in the view rendering. As different depth distortions have different impacts on the virtual view synthesis, an edge based depth coding method is proposed for virtual view synthesis. The depth map is first divided into edge regions and smooth regions. Full search is used for edge regions in which SKIP and 16×16 modes are used in smooth regions. Besides, a median trilateral filter is designed according to the structure similarity between depth and corresponding
video. Experimental results indicate that, compared with JM, the proposed algorithm improves coding efficiency and can achieve high-quality 3D rendering.

Key words: edge detection, median trilateral filter, virtual view synthesis, depth coding

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