A unified framework for detecting groups and application to shape recognition

Frédéric Cao; Julie Delon; Agnès Desolneux; Pablo Musé; Frédéric Sur

inria-00104255, version 1

A unified framework for detecting groups and application to shape recognition

Frédéric Cao ¹, Julie Delon ², Agnès Desolneux () ³, Pablo Musé ⁴, Frédéric Sur ()^a^, 5

Journal of Mathematical Imaging and Vision 27, 2 (2007) 91-119

Résumé : A unified a contrario detection method is proposed to solve three classical problems in clustering analysis. The first one is to evaluate the validity of a cluster candidate. The second problem is that meaningful clusters can contain or be contained in other meaningful clusters. A rule is needed to define locally optimal clusters by inclusion. The third problem is the definition of a correct merging rule between meaningful clusters, permitting to decide whether they should stay separate or unite. The motivation of this theory is shape recognition. Matching algorithms usually compute correspondences between more or less local features (called shape elements) between images to be compared. Each pair of matching shape elements leads to a unique transformation (similarity or affine map.) The present theory is used to group these shape elements into shapes by detecting clusters in the transformation space.

a – Institut National Polytechnique de Lorraine
1 : VISTA (INRIA - IRISA)
CNRS : UMR6074 – INRIA – Université de Rennes 1 – Institut National des Sciences Appliquées (INSA)
2 : Laboratoire Traitement du Signal et de l'Image (LTSI)
INSERM : U642 – Université de Rennes 1
3 : Mathématiques appliquées Paris 5 (MAP5)
CNRS : UMR8145 – Université Paris V - Paris Descartes
4 : Centre de Mathématiques et de Leurs Applications (CMLA)
CNRS : UMR8536 – École normale supérieure de Cachan - ENS Cachan
5 : MAGRIT (INRIA Lorraine - LORIA)
CNRS : UMR7503 – INRIA – Université Henri Poincaré - Nancy I – Université Nancy II – Institut National Polytechnique de Lorraine (INPL)

inria-00104255, version 1
http://hal.inria.fr/inria-00104255
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Contributeur : Frédéric Sur <>
Soumis le : Vendredi 6 Octobre 2006, 10:58:41
Dernière modification le : Vendredi 29 Février 2008, 15:14:25

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DOI : 10.1007/s10851-006-9176-0

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