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Visuo-Gestural Interaction with a video wall This article introduce a design methodology for free-hand gestures based interactions in an environment composed of a wide diversity of information sources and a video-wall. This article is made of three parts. It defines in the first part the characteristics and singularities of our experiment. In the second part, it describes the methodology used to create the gesture language. Finally, it presents the current image processing results. We conclude on the evaluation perspectives for this interface. 1