LEAR and XRCE's Participation to Visual Concept Detection Task - ImageCLEF 2010

In this paper we present the common effort of Lear and XRCE for the ImageCLEF Visual Concept Detection and Annotation Task. We first sought to combine our individual state-of-the-art approaches: the Fisher vector image representation, with the TagProp method for image auto-annotation. Our second motivation was to investigate the annotation performance by using extra information in the form of provided Flickr-tags. The results show that using the Flickr-tags in combination with visual features improves the results of any method using only visual features. Our winning system, an early-fusion linear-SVM classifier, trained on visual and Flickr-tags features, obtains 45.5% in mean Average Precision (mAP), almost a 5% absolute improvement compared to the best visual-only system. Our best visual-only system obtains 39.0% mAP, and is close to the best visual-only system. It is a late-fusion linear-SVM classifier, trained on two types of visual features (SIFT and colour). The performance of Ta...

• Type: Conference
• Year: 2010
• Where: CLEF
• Authors: Thomas Mensink, Gabriela Csurka, Florent Perronnin, Jorge Sánchez, Jakob J. Verbeek
• Keywords: CLEF 2010, Information Technology, Linear-SVM Classifier, SVM Classifier, Visual Features