Title
Weight control for modelling with NURPS surfaces
Abstract
NURPS surfaces are the rational extension of Powell-Sabin splines in their normalized B-spline representation. In this paper we study the influence of modifying the weights of a NURPS surface. We describe the relation between the weights associated with a control triangle and the points on the NURPS surface by means of a double volume ratio. We also extend the concept of Farin points for rational Bezier curves to NURPS surfaces, resulting in weight points and weight triangles. They admit a local weight control in a geometrically intuitive way.
Year
DOI
Venue
2007
10.1016/j.cagd.2007.01.005
Computer Aided Geometric Design
Keywords
Field
DocType
68u07,weight control,nurps surface,weight point,farin point,: nurps,double volume ratio,weight points amsmos classication : primary : 65d07,weight triangle,control triangle,secondary : 65d17,local weight control,rational splines,weight points,rational bezier curve,rational extension,powell-sabin spline,nurps
B-spline,Spline (mathematics),Topology,Polynomial interpolation,Curve fitting,Computer Aided Design,Triangulation (social science),Bézier curve,Surface-area-to-volume ratio,Mathematics
Journal
Volume
Issue
ISSN
24
3
Computer Aided Geometric Design
Citations 
PageRank 
References 
2
0.43
8
Authors
3
Name
Order
Citations
PageRank
Hendrik Speleers123624.49
Paul Dierckx29612.28
Stefan Vandewalle350162.63