SAMOS - Colloquium "Statistiques pour le traitement de l'image" (Conférences, 2009)
Université Paris 1 Panthéon-SorbonneLa statistique joue de nos jours un rôle croissant dans de nombreux domaines scientifiques, notamment en traitement de l'image. En effet, il est à présent difficile pour un opérateur humain de traiter de façon exhaustive les données d'image dans un temps raisonnable. La statistique prend alors le relais pour analyser de façon automatique ces données dans le but d'aider les opérateurs à la prise de... more
| Publishes | Daily | Episodes | 12 | Founded | 13 years ago |
|---|---|---|---|---|---|
| Language |  French | Categories | EducationCourses | ||
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Les premiers niveaux du système visuel des primates sont maintenant bien connus. Dans cet exposé, nous présentons leur architecture et leurs fonctions comme un modèle pour le traitement et l'analyse des images. Tout y apparaît comme bien adapté à la ... more
La réduction de dimension a pour ambition de produire des représentations en faible dimension d'ensembles de données en haute dimension. Un des objectifs principaux de la réduction de dimension est la visualisation de données (en dimension 2 ou 3). D... more
On s'intéresse à la méthode des forêts aléatoires d'un point de vue méthodologique. Introduite par Leo Breiman en 2001, elle est désormais largement utilisée tant en classification qu'en régression avec un succès spectaculaire. On vise tout d'abord à... more
We address the problem of volume reconstruction from a sequence of cross-sections in the case where the positions of the cross-sections are unknown. We propose an integrated statistical formulation of the problem leading to an energy minimisation alg... more
Un problème important en statistiques est de trouver une loi de probabilité jointe entre deux variables à partir de ses lois marginales. Dans le cas de deux variables, les densités marginales f1(x) et f2(y) sont liées à leurs distribution jointe f(x,... more
In the first part we are interested in finding images of people on the web, and more specifically within large databases of captioned news images. It has recently been shown that visual analysis of the faces in images returned on a text-based query o... more
Les machines à noyaux constituent une classe d'algorithmes permettant d'extraire de l'information à partir de données dans un cadre non-paramétrique et fonctionel. L'intérêt suscité par ces méthodes tient d'abord aux excellentes performances qu'elles... more
Nous proposons des techniques adaptatives en apprentissage statistique permettant de transférer l'information acquise sur une population de référence P vers une population cible P*. Etant donné un échantillon d'individus issu d'une population P, décr... more
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