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Segmentation topologique des surfaces discretes

Abstract : We propose in this paper a new approach ta segment a discrete :3D object into a stmcturlO of characteristic topological prinùtives with attached qualitative features. This structure can he seen itself as a qua/itatiuf description of the objl~ct, becaU!:i€ * it is intrimic to the 3D object, which rneans it is stable to rigid transformations (rotations and t ra.nslations). * it is locally defined, and therefore stable ta partial occlusions and local modifications of the object structure. * it is rohust to noise and small deformations, as confirmed by our experimental reS1l1ts. Our approach concentrat.es on topological properties of discrete surfaces. These SllrfaCI;S lIlav correspond to the €J.'ternal surface of the objects extracted by a 3D edge detector, or to the .,kdd,J!t surface obtained by a new thinning algorithm. Our labeling algorithm is based un very loc*;d computations, allowing rnassively parallel computations and real time computations. We present a realistic experiment to characterize and locaté spatially a complex 3D [ll'~dical abject using the proposed segmentation of its skeleton.
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https://hal.inria.fr/inria-00075202
Contributor : Rapport de Recherche Inria <>
Submitted on : Wednesday, May 24, 2006 - 5:42:44 PM
Last modification on : Friday, November 16, 2018 - 4:20:20 PM
Document(s) archivé(s) le : Tuesday, April 12, 2011 - 9:47:27 PM

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  • HAL Id : inria-00075202, version 1

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Grégoire Malandain, Gilles Bertrand, Nicholas Ayache. Segmentation topologique des surfaces discretes. [Rapport de recherche] RR-1357, INRIA. 1990. ⟨inria-00075202⟩

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