Networked virtual environments like Second Life enable distant people to meet for leisure as well as work. But users are represented through avatars controlled by keyboards and mouses, leading to a low sense of presence especially regarding body language. Multi-camera real-time 3D modeling offers a way to ensure a significantly higher sense of presence. But producing quality geometries, well textured, and to enable distant user tele-presence in non trivial virtual environments is still a challenge today.

We propose to illustrate a generic Levels Of Details (LOD) technique which is a key point to construct distributed VR application involving large static or dynamic datasets, issued from measurements or big simulations. This demo focus on a parallel LOD algorithm for GIS and presents a 3D textured section of the Loire river near Orléans. Since all visualized data are handle in RAM memory without complex pre-processing, this method is transposable into more dynamic context where texture data are generated from simulations.