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Progressive Discrete Domains for Implicit Surface Reconstruction

Tong Zhao 1, 2 Pierre Alliez 1, 2 Tamy Boubekeur 3 Laurent Busé 4, 2 Jean-Marc Thiery 5, 6, 7 
1 TITANE - Geometric Modeling of 3D Environments
CRISAM - Inria Sophia Antipolis - Méditerranée
4 AROMATH - AlgebRe, geOmetrie, Modelisation et AlgoriTHmes
CRISAM - Inria Sophia Antipolis - Méditerranée , NKUA - National and Kapodistrian University of Athens
7 IMAGES - Image, Modélisation, Analyse, GEométrie, Synthèse
LTCI - Laboratoire Traitement et Communication de l'Information
Abstract : Many global implicit surface reconstruction algorithms formulate the problem as a volumetric energy minimization, trading data fitting for geometric regularization. As a result, the output surfaces may be located arbitrarily far away from the input samples. This is amplified when considering i) strong regularization terms, ii) sparsely distributed samples or iii) missing data. This breaks the strong assumption commonly used by popular octree-based and triangulation-based approaches that the output surface should be located near the input samples. As these approaches refine during a pre-process, their cells near the input samples, the implicit solver deals with a domain discretization not fully adapted to the final isosurface.We relax this assumption and propose a progressive coarse-to-fine approach that jointly refines the implicit function and its representation domain, through iterating solver, optimization and refinement steps applied to a 3D Delaunay triangulation. There are several advantages to this approach: the discretized domain is adapted near the isosurface and optimized to improve both the solver conditioning and the quality of the output surface mesh contoured via marching tetrahedra.
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Submitted on : Friday, July 2, 2021 - 2:58:36 PM
Last modification on : Saturday, June 25, 2022 - 11:50:59 PM
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Tong Zhao, Pierre Alliez, Tamy Boubekeur, Laurent Busé, Jean-Marc Thiery. Progressive Discrete Domains for Implicit Surface Reconstruction. Computer Graphics Forum, Wiley, 2021, Proceedings of the EUROGRAPHICS Symposium on Geometry Processing 2021, 40 (5), pp.143-156. ⟨10.1111/cgf.14363⟩. ⟨hal-03276748⟩



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