Interactive Video Search and Browsing Systems

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Interactive Video Search and Browsing Systems

  1. 1. Interactive Video Search and Browsing Systems Marco Bertini, Alberto Del Bimbo, Andrea Ferracani, Daniele Pezzatini Universit` degli Studi di Firenze - MICC a The search engineThe Orione search engine has different query modalities and visualizations, resulting in an advanced tool forretrieval and exploration of video archives.It uses an ontology created semi-automatically from a flat lexicon, using WordNet to create concept relations.Automatic video annotations are provided by a system based on the bag-of-words approach, that exploits SIFT,SURF and MSER visual features and the Pyramid Match Kernel. The web-based user interface • Simple or advanced search interface to build composite queries that may include Boolean and temporal operators, metadata and geo tag. • Integrated tool that allows to browse video archives navigating through the relations between the concepts of the ontology. • Manual annotation tool to provide free-text, ontology-based and geographical annotations that can be used for correcting and integrating automatic annotations. The multitouch user interface • Users can browse the ontology structure in order to select concepts and start the video retrieval process. • Users can inspect the results returned by the search engine and organize them according to their specific purposes by performing simple gestures. • The user interface adopts some visualization principles derived from the discipline of interaction design and is equipped with a set of interaction functionalities to improve the usability of the system. Usability testhttp://www.micc.unifi.it/ This work was partially supported by the EU IST IM3I project (contract FP7-222267). http://www.im3i.eu

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