TWO OPTIMIZATIONS OF THE MPEG-4 FAMC STANDARD FOR ENHANCED COMPRESSION OF ANIMATED 3D MESHES

被引：3
|
作者：
Mamou, K. [1 ]
Zaharia, T. [1 ]
Preteux, F. [1 ]
Kamoun, A. [2 ]
Payan, F. [2 ]
Antonini, M. [2 ]
机构：
[1] TELECOM & Management SudParis, Inst TELECOM, ARTEMIS Dept, 9 Rue Charles Fourier, F-91011 Evry, France
[2] Univ Nice Sophia Antipolis, CNRS, UMR 6070, Lab I3S, F-2000 Sophia Antipolis, France
来源：
2008 15TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-5 | 2008年
关键词：
Mesh compression; animation compression; dynamic mesh compression; MPEG-4; AFX;
D O I：
10.1109/ICIP.2008.4712117
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Recently, the MPEG-4 standard adopted a novel technology for compression of dynamic 3D meshes with constant connectivity and time-varying geometry, refered to as FAMC Frame-based Animated Mesh Compression. In this paper, we propose two optimizations of the FAMC approach, aiming at improving the compression efficiency. The first one is based on a PCA (Principal Component Analysis) decomposition of the motion compensation error residuals. The second improves the bi-orthogonal (4-2) wavelet coding approach supported by the standard, by introducing an optimal bit allocation procedure, combined with an adapted quantization of wavelet coefficients. Experimental results show that both optimizations lead to significant gains in compression rate (about 20-30%) at low bitrates.
引用
收藏
页码：1764 / 1767
页数：4
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