N Sapidis, G Farin - Computer-aided design, 1990 - Elsevier
An algorithm is presented for locally fairing B-spline curves. The algorithm is based on repeatedly removing and reinserting knots of the spline. These knots are selected …
This book aims to develop algorithms of shape-preserving spline approximation for curves/surfaces with automatic choice of the tension parameters. The resulting …
H Greiner - Mathematical and computer Modelling, 1991 - Elsevier
The construction of spline functions possessing certain shapes like monotonicity, convexity or nonnegativity is an important concern in data representation and computer-aided design …
A review of shape preserving approximation methods and algorithms for approximating univariate functions or discrete data is given. The notion of 'shape'refers to the geometrical …
PE Koch, T Lyche - Geometric modelling, 1993 - Springer
Abstract In [11, 13] we introduced a basis of B-splines for the exponential splines in tension considered by Schweikert already in 1966. For interpolation with these basis functions we …
G Beliakov - Approximation Theory and its Applications, 2000 - Springer
Least squares polynomial splines are an effective tool for data fitting, but they may fail to preserve essential properties of the underlying function, such as monotonicity or convexity …
In this paper we present a simple automatic algorithm for constructing C2 continuous planar parametric interpolants, which preserve the local-convexity information contained in the …
TA Foley - Computer Aided Geometric Design, 1988 - Elsevier
The monotonically and convexly constrained (MONCON) weighted v-spline interpolant is presented, which is the C 1 piecewise cubic solution to a constrained optimization problem …
P Costantini, BI Kvasov, C Manni - Advances in Computational …, 1999 - Springer
A hyperbolic tension spline is defined as the solution of a differential multipoint boundary value problem. A discrete hyperbolic tension spline is obtained using the difference …