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A Dynamic Surface Reconstruction Framework for Large Unstructured Point Sets

Rémi Allègre 1 Raphaëlle Chaine 1 Samir Akkouche 1
1 GeoMod - Modélisation Géométrique, Géométrie Algorithmique, Fractales
LIRIS - Laboratoire d'InfoRmatique en Image et Systèmes d'information
Abstract : We present a method to reconstruct simplified mesh surfaces from large unstructured point sets, extending recent work on dynamic surface reconstruction. The method consists of two core components: an efficient selective reconstruction algorithm, based on geometric convection, that simplifies the input point set while reconstructing a surface, and a local update algorithm that dynamically refines or coarsens the reconstructed surface according to specific local sampling constraints. We introduce a new data-structure that significantly accelerates the original selective reconstruction algorithm and makes it possible to handle point set models with millions of sample points. Our data-structure mixes a kd-tree with the Delaunay triangulation of the selected points enriched with a sparse subset of landmark sample points. This design efficiently responds to the specific spatial location issues of the geometric convection algorithm. We also develop an out-of-core implementation of the method, that permits to seamlessly reconstruct and interactively update simplified mesh surfaces from point sets that do not fit into main memory.
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https://hal.archives-ouvertes.fr/hal-01611793
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Submitted on : Friday, October 6, 2017 - 12:20:50 PM
Last modification on : Wednesday, November 20, 2019 - 2:55:19 AM

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  • HAL Id : hal-01611793, version 1

Citation

Rémi Allègre, Raphaëlle Chaine, Samir Akkouche. A Dynamic Surface Reconstruction Framework for Large Unstructured Point Sets. IEEE/Eurographics Symposium on Point-Based Graphics 2006, Jul 2006, Boston, United States. pp.17-26. ⟨hal-01611793⟩

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