Analyse de techniques de coopération en environnements virtuels 3D

National audienceVirtual reality has lead to development of many methods for interacting between real humans and virtual objects in 3D spaces. Nowadays, some new developments are made for cooperative interactions which means that several persons can act simultaneouly on shared objects. A cooperation requires new metaphors to make several persons acting on same objects possible and also to have some new feedbacks to users to explain shared actions. Finally, some new technical issues in platforms appear like synchronization and consistency between site