Fusion techniques for environmental database construction

Presents various fusion techniques that we are using or investigating throughout the process of environmental database construction. The environmental database covers digital terrain models (DTMs), urban digital surface models (DSMs) and 3D CAD textured models. This paper focuses on the possible joint exploitation of multi-sensor images. We thus show the approach that we have developed (and implemented in our operational systems) for multi-sensor coherent registration. From this point of view, it is possible to exploit image redundancy in DTM production, or in DSM using multi-view images. Finally, we tackle the problem of not-well-known geometric image/3D CAD model correspondence, in order to make the texture mapping easier.