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Multimedia Data Bases

Incorporating Geometry Information with Weak Classifiers for Improved Generic Visual Categorization

Gabriela CsurkaContact Information, Jutta WillamowskiContact Information, Christopher R. DanceContact Information and Florent PerronninContact Information

(1)  Xerox Research Centre Europe, 6 Rue de Maupertuis, 38240 Meylan, France
Abstract
In this paper1, we improve the performance of a generic visual categorizer based on the ”bag of keypatches” approach using geometric information. More precisely, we consider a large number of simple geometrical relationships between interest points based on the scale, orientation or closeness. Each relationship leads to a weak classifier. The boosting approach is used to select from this multitude of classifiers (several millions in our case) and to combine them effectively with the original classifier. Results are shown on a new challenging 10 class dataset.

Contact Information Gabriela Csurka
Email: gsurka@xeroxlabs.com

Contact Information Jutta Willamowski
Email: willamow@xeroxlabs.com

Contact Information Christopher R. Dance
Email: cdance@xeroxlabs.com

Contact Information Florent Perronnin
Email: fperronn@xeroxlabs.com

1 This work was funded by the EU project LAVA (IST-2001-34405).
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