Towards second and third generation web-based multimedia (original) (raw)
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IEEE Transactions on Knowledge and Data Engineering, 2001
AbstractĂAdvanced multimedia applications require adequate support for the modeling of multimedia content by multimedia document models. More and more this support calls for not only the adequate modeling of the temporal and spatial course of a multimedia presentation and its interactions, but also for the partial reuse of multimedia documents and adaptation to a given user context. However, our thorough investigation of existing standards for multimedia document models such as HTML, MHEG, SMIL, and HyTime leads to us the conclusion that these standard models do not provide sufficient modeling support for reuse and adaptation.
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In order for multimedia presentations to be stored, accessed and played from a large library they should not be encoded as final form presentations, since these consume storage space and cannot easily be adapted to variations in presentation-time circumstances such as user characteristics and changes in end-user technology. Instead, a more presentation independent approach needs to be taken that allows the generation of multiple versions of a presentation based on a presentation-independent description. In order for such a generated presentation to be widely viewable, it must be in a format that is widely implemented and adopted. Such a format for hypermedia presentations does not yet exist. However, the recent release of SMIL, whose creation and promotion is managed by the World Wide Web Consortium, promises to become such a format in the short term and be for hypermedia what HTML is for hypertext. The technology for enabling this presentation-independent approach is already available, but requires the use of large and unapproachable standards, such as DSSSL and HyTime. In this paper we show that these two standards can be used with SMIL, and by concentrating on a particular application, illustrate the use of publicly available tools to support the generation of multiple presentations from a single presentation-independent source.
Computer Standards & Interfaces, 1997
The standard reference model (SRM) for intelligent multimedia presentation systems describes a framework for the automatic generation of multimedia presentations. This framework, however, lacks an explicit document model of the presentation being generated. The Amsterdam hypermedia model (AHM) describes the document features of a hypermedia presentation explicitly. We take the AHM and use it as a basis for describing in detail the stages of generating a hypermedia presentation within the SRM framework, which we summarise in a table. By doing so, the responsibilities of the individual SRM layers become more apparent. 0 1997 Elsevier Science B.V. Keyords. Standard reference model; intelligent multimedia presentation system: Amsterdam hypermedia model 0920-548'?/97/$17.00 0 1997 Elsevier Science B.V. All rights reserved PII SO920-5489(97)00014-7 L. Hardman et al. /Computer Standards & Interfaces 18 (1997) 497-507