One of the applications using computer graphics is landscape simulation, which evaluates the scenery changed by constructing new buildings. The scenery is built with models generated by computer graphics modelling software or image based modelling techniques. The models generated by computer graphics modelling software is beautiful without stains or cracks on the building walls so that some sceneries are built by mapping real images of real buildings onto the walls of the buildings in order to improve the reality. However, even if real images are mapped onto the building walls, the scenery remains the same unless the images change as time passes. Many researchers have been trying to represent stains or cracks on the surfaces of objects built in a virtual space.