𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Knot removal for parametric B-spline curves and surfaces

✍ Scribed by Tom Lyche; Knut Mørken


Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
977 KB
Volume
4
Category
Article
ISSN
0167-8396

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Knot-removal algorithms for NURBS curves
✍ W. Tiller 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 647 KB

The paper presents pseudocode aloorithms, c-lanouaoe code, and error analysis for removino knots from rational B-spline curves and surfaces. Efficient and easy-to-use aloorithms are presented that, with one call, remove all the removable knots from a B-spline curve or surface.

Parametrization of Bézier-type B-spline
✍ P.J. Hartley; C.J. Judd 📂 Article 📅 1978 🏛 Elsevier Science 🌐 English ⚖ 440 KB

Sections of parametric surfaces defined by equally spaced parameter values can be very unevenly spaced physically. This can cause practical problems when the surface is to be drawn or machined automatically. This paper describes a method for imposing a good parametrization on a curve constructed by

Algorithm for orthogonal projection of p
✍ Hai-Chuan Song; Jun-Hai Yong; Yi-Jun Yang; Xiao-Ming Liu 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 767 KB

This paper proposes an algorithm for calculating the orthogonal projection of parametric curves onto B-spline surfaces. It consists of a second order tracing method with which we construct a polyline to approximate the pre-image curve of the orthogonal projection curve in the parametric domain of th