Efficient coding for dynamic 3-D mesh with vertices structuring and connectivity-oriented multiresolution decomposition

Authors:
Kei Sakuragi;Bo Zhou;Yasuhiro Fujita;Akira Kawanaka
Affiliations:
Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University 7-1, Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan;Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University 7-1, Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan;Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University 7-1, Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan;Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University 7-1, Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan
Venue:
Digital Signal Processing
Year:
2013

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Abstract

In this paper, we propose a new coding method for dynamic 3-D polygonal meshes with invariant connectivity between frames. This coding method is based on a wavelet transform in time domain and a multiresolution decomposition in space domain. In the time domain, with a wavelet transform taking into account a correlation between frames, a temporal redundancy is reduced. In the space domain, using a structuring by acquiring surrounding vertices in order to apply the multiresolution decomposition, polygonal meshes that have a complex connectivity are structured in 2-D plane, and then, the structured 2-D data are compressed with a connectivity-oriented multiresolution decomposition and SFQ (space-frequency quantization). As a result of applying the proposed method and comparing it with the widely used coding scheme Dynapack, we confirmed a better coding efficiency especially in low bit rate.