NDLI: Multi-Chart Geometry Video: A Compact Representation for 3D Animations

Content Provider	IEEE Xplore Digital Library
Author	Mamou, K. Zaharia, T. Preteux, F.
Copyright Year	2006
Description	Author affiliation: ARTEMIS Dept., Inst. Nat. des Telecommun., Evry (Mamou, K.; Zaharia, T.; Preteux, F.)
Abstract	This paper introduces a new compression scheme, so- called Multi-Chart Geometry Video (MCGV), for 3D dynamic meshes with constant connectivity and time-varying geometry. The core of the proposed method is a piecewise affine predictor coupled with a Multi-Chart Geometry IMage (MCGIM) representation of the residual errors. The mesh is first partitioned into vertex clusters whose motion can be accurately described by a unique 3D affine transform. The prediction errors are represented as MCGIMs which are compressed by using standardized image encoders such as JPEG and MPEG-4. The performances of our encoder are objectively evaluated on a data set of six animation sequences with various sizes, geometries and topologies, and exhibiting both rigid and elastic motions. The experimental evaluation shows that the proposed MCGV achieves up to 60% lower compression distortions than the geometry video approach, while outperforming (with 30% to 94% lower distortions) the RT, MPEG-4IAFX-IC, D3DMC, PCA and Dynapack techniques.
Starting Page	711
Ending Page	718
File Size	1121042
Page Count	8
File Format	PDF
ISBN	0769528252
DOI	10.1109/3DPVT.2006.97
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Geometry Animation Image coding Video compression MPEG 4 Standard Performance evaluation Topology Bones Protection Transform coding
Content Type	Text
Resource Type	Article

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