Subdivision surfaces in MPEG-4

Author

Morán, Francisco ; Gioia, P. ; Steliaros, Michael ; Bourges-Sévenier, Mikaël ; García, Narciso

Author_Institution

Grupo Tratamiento Imagenes, Univ. Politecnica de Madrid, Spain

Volume

3

fYear

2002

fDate

2002

Abstract

SS (subdivision surfaces) are a powerful modelling paradigm for truly hierarchical (instead of merely progressive) 3D surface (as opposed to mesh) coding. Two SS-based tools of the MPEG-4 animation framework extension allow us to derive a piecewise smooth surface from an initial control mesh: if the subdivision process is run in its predefined form, the initial mesh is simply smoothed; if 3D details are added to the positions of the new vertices appearing after each subdivision step, a particular target surface may be approximated with an increasing accuracy. In both cases, multiresolution editing/animation is possible.

Keywords

CAD; code standards; computational geometry; computer animation; image coding; image resolution; 3D surface coding; MPEG-4; animation framework extension; hierarchical 3D surfaces; initial control mesh; modelling; multiresolution editing; piecewise smooth surface; subdivision surfaces; Application software; Design automation; Facial animation; MPEG 4 Standard; Research and development; Spline; Surface reconstruction; Surface topography; Tiles; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing. 2002. Proceedings. 2002 International Conference on

ISSN

1522-4880

Print_ISBN

0-7803-7622-6

Type

conf

DOI

10.1109/ICIP.2002.1038889

Filename

1038889