National Journal Papers

Avec l'émergence de nouvelles formes de présentation et de représentation des documents audiovisuels, l'hypervidéo - une technologie attractive axée sur l'hypermédia à forte composante vidéo - introduit de nouvelles formes de diffusion de documents audiovisuels à structures complexes. Son objectif est de permettre des expériences utilisateurs inouïes avec des paradigmes de présentation nouveaux et des alternatives d'interactions encore plus élaborées. Généralement considérées via des modèles hypermédias, les concepts et les représentations associés aux hypervidéos restent encore trop généraux pour couvrir toutes leurs caractéristiques, les empêchant d'être mieux étudiées et plus répandues. Le besoin d'un fondement théorique spécifique aux hypervidéos a motivé la proposition du modèle CHM - Component-based Hypervideo Model -, élaboré suivant les principes de la modélisation base de composants et la description à base d'annotations. Cette nouvelle base théorique sert comme fondement pour une implémentation des hypervidéos ayant pour cible la vidéo sur le Web, présentée comme preuve des principes avancés et ayant en perspective de proposer une meilleure prise en charge et une exploitation optimale de la vidéo sur le Web. ---- Defined as a specialization of hypermedia focusing on interactive video, hypervideo is an attractive technology that promises non-conventional and powerful features. It aims to bring more powerful capabilities for video-centric documents and to offer novel user experiences with more elaborated practices and advanced interaction alternatives. Usually considered from a conventional hypermedia perspective, the underlying concepts and representations are too general to qualify hypervideos, preventing this kind of documents from being broadly investigated. The need for theoretical foundations for hypervideos motivates the present work. With the aim to provide a formal data model that considers hypervideo beyond the very general and conventional hypermedia ones, CHM - Component-based Hypervideo Model - is an attempt to theorize hypervidéos using a component-based modeling and an annotation-driven document description. The proposed model serves as a basis for a Web-oriented implementation used as a proof of principles and a means to provide a basis for more elaborated practices of online video implementation since the features of hypervideo are grafted to wider video-based Web documents in a simple yet powerful and Web standards-compliant manner

In the actual standards and multimedia systems, the documents are often written in an event based approach which makes the programming techniques not adapted to the incremental edition process. The documents maintenance has become very hard and very expensive and the construction of such documents is not adapted to the non-computer scientist users. Moreover, works done in this field have mainly focused on the temporal dimension while the development of such systems should consider all the multimedia document dimensions (temporal, spatial, structural and hypermedia) to mutualize their conception and implementation. Furthermore, the documents adaptation to particular users reading profiles is not considered whereas for some application fields, like learning, this remains an important need. On the basis of those observations, MediaStudio will try to be a contribution to the field of editing and presenting interactive multimedia documents through a set of propositions to compensate the mentioned insufficiencies.

National Journal Papers

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