| HAL : hal-00702363, version 1 |
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| Eusipco 2012, Bucarest : Roumanie (2012) |
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| A SPLINE QUASI-INTERPOLANT FOR FITTING 3D DATA ON THE SPHERE AND APPLICATIONS |
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| Christophe Léger 1Driss Sbibih 2 |
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| (27/08/2012) |
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| In [1], the authors have approached the sphere-like surfaces using the tensor product of an algebraic cubic spline quasiinterpolant with a 2¼-periodic Uniform Algebraic Trigonometric B-splines (UAT B-splines) of order four. In this paper, we improve the results given in [1], by introducing a new quasi-interpolant based on the tensor product of an algebraic cubic spline quasi-interpolant with a periodic cubic spline quasi-interpolant, obtained by the periodization of an algebraic cubic spline quasi-interpolant. Our approach allows us to obtain an approximating surface which is of class C2 and with an approximation order O(h4). We show that this method is particularly well designed to render 3D closed surfaces, and it has been successfully applied to reconstruct human organs such as the left ventricle of the heart. |
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| 1 : | Laboratoire PRISME (PRISME) |
| Université d'Orléans : EA4229 – ENSI Bourges | |
| 2 : | Département de Mathématiques et Informatique Université Mohammed 1er (MRC-UMIS) |
| Université Mohammed 1er | |
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| Iraus |
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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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| B-spline – Quasi-interpolant – Sphere-like surface – Medical imaging |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00702363, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00702363 | |
| oai:hal.archives-ouvertes.fr:hal-00702363 | |
| Contributeur : Christophe Léger | |
| Soumis le : Jeudi 30 Août 2012, 07:00:20 | |
| Dernière modification le : Jeudi 30 Août 2012, 07:00:20 | |