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5 February 2003 Synchronization of MPEG-7 metadata with a broadband MPEG-2 digiTV stream by utilizing a digital broadcast item approach
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Digital, Interaction Television will be deployed in the next few years, where the key-standard for Europe is DVB/MHP4. Initial experiences are already reported, but for advanced use scenarios, and application areas basic research issues, such as synchronization of MPEG-7 metadata, retrieved either from the broadcast stream, or the feedback channel are still to be done. In this research work we consider, that metadata will be available from multiple sources, especially commercial emerging MPEG-7 extractors, and streamed to a digiTV client over the broadcast- or feedback network. MPEG-71 provides asynchronous or synchronous delivery at transport layer, and DVB/MHP standards provide synchronization via a trigger mechanism. As an example we show a simple hyperlinked television show, where we segmented each frame into elements of interest, to which a hyperlink can be added. The key aspects of this paper are as follows: Description and introduction of a Digital Broadcast Item (DBI) for structuring hyperlinked TV to one entity, that is exchanged between several parties in the broadcast chain based on MPEG-21 standards; MPEG-7 metdata extraction models and image segmentation authoring tools for obtaining information about the hyperlinks within a video segment, and within a still frame; Metadata transmission and synchronization models; MPEG-7 Systems compliant software architecture at client side;
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Artur R. Lugmayr, Seppo Kalli, and Reiner Creutzburg "Synchronization of MPEG-7 metadata with a broadband MPEG-2 digiTV stream by utilizing a digital broadcast item approach", Proc. SPIE 4796, Low-Light-Level and Real-Time Imaging Systems, Components, and Applications, (5 February 2003);


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