Title :
Motion-based MESH clustering for MCDWT compression of 3D animated meshes
Author :
Boulfani-Cuisinaud, Yasmine ; Antonini, Marc ; Payan, Frederic
Author_Institution :
Lab. I3S - UMR 6070, Univ. de Nice - Sophia Antipolis, Sophia Antipolis, France
Abstract :
We present an efficient compression algorithm for sequences of triangular meshes with fixed connectivity. Our two main contributions in this paper are : a clustering technique which regroups the vertices following the same affine motion; a geometry compensation technique based on the estimation of 3D motion parameters which are modeled by affine transform matrices. Then, a scan-based temporal discrete wavelet transform is applied on the compensated sequence, and the resulting wavelet coefficients are finally encoded by an efficient coding scheme which includes a bit allocation process. Simulation results show that our compression method provides good compression performances compared to some state of the art coders.
Keywords :
affine transforms; discrete wavelet transforms; image sequences; mesh generation; stereo image processing; 3D animated meshes; 3D motion parameters estimation; MCDWT compression; affine motion; affine transform matrices; bit allocation; clustering technique; coders; compression algorithm; geometry compensation; motion-based MESH clustering; scan-based temporal discrete wavelet transform; triangular meshes; vertices; wavelet coefficients; Animation; Encoding; Geometry; Optical fibers; Three-dimensional displays; Wavelet transforms;
Conference_Titel :
Signal Processing Conference, 2007 15th European
Conference_Location :
Poznan
Print_ISBN :
978-839-2134-04-6