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Automatic Extraction of a Quadrilateral Network of NURBS Patches from Range Data Using Evolutionary Strategies

  • John William Branch
  • Flavio Prieto
  • Pierre Boulanger
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4842)

Abstract

We propose an algorithm to produce automatically a 3-D CAD model from a set of range data, based on non-uniform rational B-splines (NURBS) surface fitting technique. Our goal is to construct automatically continuous geometric models, assuming that the topology of the surface is unknown. In the propose algorithm, the triangulated surface is partitioned in quadrilateral patches, using Morse theory. The quadrilateral regions on the mesh are then regularized using geodesic curves and B-splines to obtain an improved smooth network on which to fit NURBS surfaces. NURBS surfaces are fitted and optimized using evolutionary strategies. In addition, the patches are smoothly joined guaranteeing C 1 continuity. Experimental results are presented.

Keywords

Laplacian Matrix Automatic Extraction Geodesic Path NURBS Surface Patch Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • John William Branch
    • 1
  • Flavio Prieto
    • 2
  • Pierre Boulanger
    • 3
  1. 1.Escuela de Sistemas, Universidad Nacional de Colombia - Sede MedellínColombia
  2. 2.Departamento de Ingeniería Eléctrica, Electrónica y Computación, Universidad Nacional de Colombia - Sede ManizalesColombia
  3. 3.Department of Computing Science, University of AlbertaCanada

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