Probing for Surface Mesh Generation through Delaunay Refinement

نویسندگان

  • Hugo Férée
  • Pierre Alliez
چکیده

Surface mesh generation through Delaunay refinement is considered as a relevant alternative to the common marching cubes algorithm. One distinctive feature lies into the fact that it interleaves shape probing (through intersection with Voronoi edges) with refinement. The current implementations require seeding the refinement procedure for each connected component so as to guarantee that all components are properly discovered by the mesh refinement procedure. This task is often left to the user. Although this is an easy task for input polyhedral surfaces, it is not when the input surface is defined as an isovalue of an implicit function. In this report we propose an automatic seeding procedure which interleaves refinement, seeding and initialization steps with the qualities of the refinement and the guarantees of careful seeding. Key-words: Delaunay refinement, surface probing, surface approximation, surface sampling ∗ [email protected][email protected] ha l-0 07 47 34 4, v er si on 1 31 O ct 2 01 2 Sondage de surfaces pour la generation de maillages par raffinement de Delaunay Résumé : La génération de maillage de surfaces par raffinement de Delaunay fournit une alternative pertinente à l’algorithme des «marching cubes». Son implantation actuelle nécessite une initialisation de la part de l’utilisateur, pour garantir que toutes les composantes connexes seront maillées lors de la procédure. Selon la représentation de la surface, cette étape peut être plus ou moins difficile. Nous proposons dans ce rapport une procédure automatique d’initialisation qui garantisse la complétude et la précision du maillage final. Mots-clés : Raffinement de Delaunay, sondage de surfaces, approximation de surfaces, echantillonnage de surfaces ha l-0 07 47 34 4, v er si on 1 31 O ct 2 01 2 Probing for Surface Mesh Generation through Delaunay Refinement 3

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تاریخ انتشار 2009