Semantic adaptation of multimedia documents |
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Authors: | Sébastien Laborie Jérôme Euzenat Nabil Layaïda |
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Affiliation: | 1.IRIT – Université Paul Sabatier,Toulouse Cedex 9,France;2.INRIA Grenoble Rh?ne-Alpes & LIG,Saint Ismier Cedex,France |
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Abstract: | Multimedia documents have to be played on multiple device types. Hence, usage and platform diversity requires document adaptation
according to execution contexts, not generally predictable at design time. In an earlier work, a semantic framework for multimedia
document adaptation was proposed. In this framework, a multimedia document is interpreted as a set of potential executions
corresponding to the author specification. To each target device corresponds a set of possible executions complying with the
device constraints. In this context, adapting requires to select an execution that satisfies the target device constraints
and which is as close as possible from the initial composition. This theoretical adaptation framework does not specifically
consider the main multimedia document dimensions, i.e., temporal, spatial and hypermedia. In this paper, we propose a concrete
application of this framework on standard multimedia documents. For that purpose, we first define an abstract structure that
captures the spatio-temporal and hypermedia dimensions of multimedia documents, and we develop an adaptation algorithm which
transforms in a minimal way such a structure according to device constraints. Then, we show how this can be used for adapting
concrete multimedia documents in SMIL through converting the documents in the abstract structure, using the adaptation algorithm,
and converting it back in SMIL. This can be used for other document formats without modifying the adaptation algorithm. |
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