Title:	COMPRESSION OF DYNAMIC 3D MESHES WITH STRUCTURING BY ACQUIRING SURROUNDING VERTICES AND WAVELET TRANSFORM
Author(s):	Kei Sakuragi , Shuji Watanabe , Akira Kawanaka
ISBN:	978-972-8924-84-3
Editors:	Yingcai Xiao, Tomaz Amon and Piet Kommers
Year:	2009
Edition:	Single
Keywords:	Polygonal mesh, dynamic 3D mesh, multiresolution decomposition, data compression, temporal wavelet
Type:	Short Paper
First Page:	244
Last Page:	248
Language:	English
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Paper Abstract:	In this paper, we propose a new compression method for dynamic 3D polygonal meshes with fixed connectivity between frames. This compression method is based on a wavelet transform in the time domain and a multiresolution decomposition process in the space domain. In the time domain, temporal redundancy was reduced by means of a wavelet transform considering correlation between frames. In the space domain, polygonal meshes having complex connectivity were structured in a 2D plane; the structuring was accomplished by acquiring surrounding vertices in order to consider the correlation between vertices. The structured 2D data were then compressed using a connectivity-oriented, multiresolutional decomposition process and a space-frequency quantization (SFQ) coding scheme [9]. The proposed method was applied to a common 3D model, and the results were compared with those of a conventional method (Dynapack [6]). The comparison demonstrated better compression performance by the proposed method, especially for low bit rates.
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