Scale-space Feature Extraction on Digital Surfaces - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Computers and Graphics Année : 2015

Scale-space Feature Extraction on Digital Surfaces

Résumé

A classical problem in many computer graphics applications consists in extracting significant zones or points on an object surface, like loci of tangent discontinuity (edges), maxima or minima of curvatures, inflection points, etc. These places have specific local geometrical properties and often called generically features. An important problem is related to the scale, or range of scales, for which a feature is relevant. We propose a new robust method to detect features on digital data (surface of objects in Z^3 ), which exploits asymptotic properties of recent digital curvature estimators. In [1, 2], authors have proposed curvature estimators (mean, principal and Gaussian) on 2D and 3D digitized shapes and have demonstrated their multigrid convergence (for C^3 -smooth surfaces). Since such approaches integrate local information within a ball around points of interest, the radius is a crucial parameter. In this article, we consider the radius as a scale-space parameter. By analyzing the behavior of such curvature estimators as the ball radius tends to zero, we propose a tool to efficiently characterize and extract several relevant features (edges, smooth and flat parts) on digital surfaces.
Fichier principal
Vignette du fichier
main.pdf (121.99 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01149102 , version 1 (19-05-2015)
hal-01149102 , version 2 (20-05-2015)

Identifiants

Citer

Jérémy Levallois, David Coeurjolly, Jacques-Olivier Lachaud. Scale-space Feature Extraction on Digital Surfaces. Computers and Graphics, 2015, 51 (C), pp. 177-189 ⟨10.1016/j.cag.2015.05.023⟩. ⟨hal-01149102v2⟩
256 Consultations
112 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More