Habilitation à Diriger des Recherches

Spécialité: Informatique

Mr Franck HETROY-WHEELER (Grenoble INP)

soutiendra le Vendredi 20 Novembre 2015 à 10h00 Grand Amphi de l'INRIA Rhône-Alpes, Montbonnot

Titre:

Segmentation and skeleton methods for digital shape understanding

Résumé:

Digitised geometric shape models are essentially represented as a collection of primitives without a general coherence. Shape understanding aims at retrieving global information about the shape geometry, topology or functionality, for subsequent uses such as measurement, simulation or modification. In this context, I present my main contributions to digital shape understanding, which are mostly based on shape decomposition and skeleton computation methods. The first part explores the faithfulness of the 3D mesh representation to the real world object, through topological and perceptual analyses, and suggests a conversion to a regular volumetric model. The second part focuses on shapes in motion and details tools to create, modify and analyse temporal mesh sequences. The third part explains through two concrete examples how digital shape understanding can help experts in medicine and forestry. Finally, three open questions for shape understanding of shapes in motion and scanned trees are discussed by way of perspectives.

Mots-Clés:

digital shape understanding, shape analysis, discrete geometry processing, segmentation, skeleton

Membres du Jury:

Rapporteurs:

Mr Marc DANIEL (Professeur, Aix-Marseille Université)
Mr Adrian HILTON (Professeur, University of Surrey)
Mme Michela SPAGNUOLO (Directrice de Recherche, CNR-IMATI)

Examinateurs:

Mme Marie Paule CANI (Professeur, Université Grenoble Alpes)
Mme Raphaëlle CHAINE (Professeur, Université de Lyon)
Mr Bruno LEVY (Directeur de Recherche, Inria Nancy Grand-Est)