In this paper, we present a system for the assisted creation of Pictorially Enriched Ontologies, that is ontologies for context-based digital libraries enriched by pictorial concepts for video annotation, summarization and similarity based retrieval. Here we detail the approach for video clips clustering and pictorial concepts extraction together with the approach for storing the ontology within the MPEG-7 framework. The clustering is performed by Complete Link hierarchical clustering on color histograms and motion features. Results on Formula 1 TV material are reported.
Video Clip Clustering for Assisted Creation of MPEG-7 Pictorially Enriched Ontologies / Grana, Costantino; Bulgarelli, Daniele; Cucchiara, Rita. - ELETTRONICO. - (2006), pp. 904-907. (Intervento presentato al convegno Second International Symposium on Communications, Control and Signal Processing tenutosi a Marrakech, Marocco nel Mar 13-15).