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The amount of audio-visual information has increased dramatically with theadvent of High Speed Internet. Furthermore, technological advances in recentyears in the field of information technology, have simplified the use of videodata in various fields by the general public. This made it possible to storelarge collections of video documents into computer systems. To enable efficientuse of these collections, it is necessary to develop tools to facilitate accessto these documents and handling them. In this paper we propose a method forindexing and retrieval of video sequences in a video database of largedimension, based on a weighting technique to calculate the degree of membershipof a concept in a video also a structuring of the data of the audio-visual(context / concept / video). Finally, we decided to create a search system,offering in addition to the usual commands, different types of access to thesystem, depending on the disability of the person. Indeed, the applicationconsists of a search system but offers access to commands through voice orgestures. Our contribution at the experimental level consists with theimplementation of prototype. We integrated the techniques proposed in system toevaluate it contributions in terms of effectiveness and precision.

Syst\`{e}me d'indexation et de recherche de vid\'{e}o int\'{e}grant un syst\`{e}me gestuel pour les personnes handicap\'{e}es