Thèse soutenue

De la généricité à la sélectivité des descripteurs vidéo : application à la détection de copies par le contenu

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Auteur / Autrice : Julien Law-To
Direction : Nozha Ben Hajel-Boujemaa
Type : Thèse de doctorat
Discipline(s) : Informatique
Date : Soutenance en 2007
Etablissement(s) : Versailles-St Quentin en Yvelines

Mots clés

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Résumé

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My PhD thesis presents a new approach for indexing large sets of videos by their content. The proposed concept is based on the extraction and the local description of different natures of points of interest and further on the estimation of their trajectories along the video sequence. Analyzing the low-level description obtained allows highlighting semantic labels of behaviors. Searching for copies in large video databases is a new critical issue. ViCopT is a system dedicated to video copy detection based on our video description. A complete evaluation on a large video database (1,000 hours) demonstrates the robustness and the discriminability of ViCopT and the relevance of our strategy. Comparative evaluations in European and international contexts present the high performances of our system facing other academic and industrial systems.