| HAL : hal-00392421, version 1 |
| DOI : 10.1016/j.patcog.2008.11.014 |
| Fiche détaillée | Récupérer au format |
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| Pattern Recognition 42, 10 (2009) 2288-2296 |
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| Medial Axis Lookup Table and Test Neighborhood Computation for 3D Chamfer Norms |
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| Nicolas Normand 1Pierre Evenou 1 |
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| (10/2009) |
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| Chamfer distances are discrete distances based on the propagation of local distances, or weights defined in a mask. The medial axis, i.e. the centers of the maximal disks (disks which are not contained in any other disk), is a powerful tool for shape representation and analysis. The extraction of maximal disks is performed in the general case with comparison tests involving look-up tables representing the covering relation of disks in a local neighborhood. Although look-up table values can be computed efficiently, the computation of the look-up table neighborhood tend to be very time-consuming. By using polytope descriptions of the chamfer disks, the necessary operations to extract the look-up tables are greatly reduced. |
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| 1 : | Institut de Recherche en Communications et en Cybernétique de Nantes (IRCCyN) |
| CNRS : UMR6597 – Université de Nantes – École Centrale de Nantes – Ecole des Mines de Nantes – Ecole Polytechnique de l'Université de Nantes | |
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| IRCCyN-IVC |
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| Domaine | : | Informatique/Traitement du signal et de l'image Sciences de l'ingénieur/Traitement du signal et de l'image |
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| Chamfer distances – Weighted distances – Medial axis – Test neighborhood – Polytopes |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00392421, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00392421 | |
| oai:hal.archives-ouvertes.fr:hal-00392421 | |
| Contributeur : Nicolas Normand | |
| Soumis le : Lundi 8 Juin 2009, 10:42:16 | |
| Dernière modification le : Lundi 8 Juin 2009, 10:50:56 | |