Mixing synthesis and video images of outdoor environments: application to the bridges of Paris

Augmented reality is the technique by which real images can be enhanced by addition of computer-generated information. Augmented reality shows great promises in fields where a simulation in situ would be either impossible, not realistic enough or too expensive. We present in this paper an augmented reality loop that uses vision tools (perspective inversion, tracking) and show how it was used to fully enrich a sequence of a bridge of Paris with a model illuminated synthetically.