A video retrieval and sequencing system
ACM Transactions on Information Systems (TOIS) - Special issue on video information retrieval
Adding macroscopic semantics to anchors in knowledge-based hypertext
International Journal of Human-Computer Studies - Special issue: knowledge-based hypermedia
Key to effective video retrieval: effective cataloging and browsing
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
Proceedings of the tenth ACM Conference on Hypertext and hypermedia : returning to our diverse roots: returning to our diverse roots
Composition and Search with a Video Algebra
IEEE MultiMedia
The Stratification System - A Design Emvironment for Random Access
Proceedings of the Third International Workshop on Network and Operating System Support for Digital Audio and Video
The Knowledge Engineering Review
Truth in the Digital Library: From Ontological to Hermeneutical Systems
ECDL '01 Proceedings of the 5th European Conference on Research and Advanced Technology for Digital Libraries
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In this paper we present a contextual representation model of audiovisual (AV) documents for AV information systems. In the first part, we study AV medium, and show that AV intra-document context is always related to a user task seen as a general description task. We then present the AI-Strata model for AV description: audiovisual units (pieces of AV documents) are annotated with annotation elements described in a knowledge base. The annotation elements are connected at the document level. The whole system being considered as a single graph, we define a context of one element as end points of graph-paths starting with this element. In order to control contextual paths, we define the notion of potential graphs as graph-patterns instantiated in the general graph. Finally, we show how these graphs are used in the main task of AV information system: navigation, indexing and retrieval.