An operational VR platform for building Virtual Training Environments

International audienceWe present in this paper researches focused on specification and production of virtual training environments. The use of Virtual Environments (VE) for training is strongly stimulated by important needs of training on sensitive equipment. But the development of such applica- tions is generally done in new projects, where the reusability of existing developments is a major issue. We present here a platform of development, based on internal models that have been designed to achieve this reusability and standardization for the efficient development of new virtual environments.We defined a new generic model named STORM, used to describe reusable behaviors for 3D objects and reusable interactions between those objects or with humans. We also defined a scenario lan- guage named LORA, which allow non-computer scientists author various and complex sequences of tasks in a virtual scene. Based on those models, as an industrial validation with Nexter-Group, we have created 20 operational scenarios of maintenance virtual training on military equipments. We are also begining to create collaborative environments, where virtual and real humans have to collaborate to achieve their procedures