A New Method for Direct Deformation of NURBS Surfaces

Author

Hui-min, Wang ; Zi-fu, Chen

Author_Institution

Dept. of Mech. & Electron. Eng., Weifang Univ., Weifang, China

Volume

3

fYear

2009

fDate

21-22 May 2009

Firstpage

94

Lastpage

97

Abstract

The method to modify the NURBS surface in this paper is not based on the change of the mathematical parameters. It presents a new surface representation for the deformed NURBS surface based on the Cao En model. The deformed surface representation is a combination of two functions: a displacement function and a function for an existing NURBS surface. There is no implied controlling grid structure over the surface. The key points can be placed anywhere in the parameter space. The point displacement constraints directly influence the final shape of the deformed surface. The results show that this method facilitates the designer in a rapid and intuitive manner in editing surfaces.

Keywords

computer graphics; curve fitting; splines (mathematics); Cao En model; NURBS surface; displacement function; grid structure; point displacement constraint; surface deformation; surface editing; surface representation; Constraint optimization; Deformable models; Design automation; Design methodology; Displacement control; Gold; Shape control; Spline; Surface reconstruction; Surface topography;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Computing Science, 2009. ICIC '09. Second International Conference on

Conference_Location

Manchester

Print_ISBN

978-0-7695-3634-7

Type

conf

DOI

10.1109/ICIC.2009.229

Filename

5168812