In inverse lighting problems, a lot of optimization techniques have been used. A new method in the framework of radiosity
is presented here, using a simple Monte-Carlo method to find the positions of the lights in a direct lighting. Declarative
modelling will also be used to allow the designer to describe in a more intuitive way his lighting wishes. Declarative modelling
will propose to the user several solutions, and probably some interesting scenes not previously imagined by the designer.