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The interactive editing and contouring of empirical fields

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3 Author(s)
Dickinson, R.R. ; Visual Edge Software, St. Laurent, Que., Canada ; Bartels, R.H. ; Vermeulen, A.H.

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.<>

Published in:

Computer Graphics and Applications, IEEE  (Volume:9 ,  Issue: 3 )