Adaptive Depth-Map Coding for 3D-Video

Kyung-Yong KIM  Gwang-Hoon PARK  Doug-Young SUH  

IEICE TRANSACTIONS on Information and Systems   Vol.E93-D   No.8   pp.2262-2272
Publication Date: 2010/08/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E93.D.2262
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Image Processing and Video Processing
3D-video coding,  depth-map coding,  free view-point TV,  

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This paper proposes an efficient adaptive depth-map coding scheme for generating virtual-view images in 3D-video. Virtual-view images can be generated by view-interpolation based on the decoded depth-map of the image. The proposed depth-map coding scheme is designed to have a new gray-coding-based bit-plane coding method for efficiently coding the depth-map images on the object-boundary areas, as well as the conventional DCT-based coding scheme (H.264/AVC) for efficiently coding the inside area images of the objects or the background depth-map images. Simulation results show that the proposed coding scheme, in comparison with the H.264/AVC coding scheme, improves the BD-rate savings 6.77%-10.28% and the BD-PSNR gains 0.42 dB-0.68 dB. It also improves the subjective picture quality of synthesized virtual-view images using decoded depth-maps.