Title :
The interactive editing and contouring of empirical fields
Author :
Dickinson, Robert R. ; Bartels, Richard H. ; Vermeulen, Allan H.
Author_Institution :
Visual Edge Software, St. Laurent, Que., Canada
fDate :
5/1/1989 12:00:00 AM
Abstract :
A system for the interactive editing and contouring of surfaces derived from empirical fields is described. The approach taken begins with the representation of a field as a general-order, nonuniform, tensor-product, B-spline surface. It provides an interactive display for editing the surface by control-vertex manipulation and a contouring algorithm that is specifically designed for the fast and robust contouring of B-spline surfaces. Interactive editing of the resulting model is feasible because of the local nature of editing changes when B-splines are used. The use of nonuniform B-splines gives the flexibility required to model highly irregular data efficiently.<>
Keywords :
computational geometry; computer graphics; interactive systems; splines (mathematics); text editing; B-spline surface; computer graphics; contouring; control-vertex manipulation; empirical fields; interactive display; interactive editing; irregular data; tensor-product; Data mining; Graphics; Layout; Least squares approximation; Least squares methods; Meteorology; Polynomials; Scattering; Spline; Surface topography;
Journal_Title :
Computer Graphics and Applications, IEEE
