Digital Model, Acquisition And Processing. The New Technologies For Architectural Survey

The new procedure of the architectural survey sets the "numerical model" or "model made by points" as central structure. This structure is able to describe precisely the architectural object in its own morphology. From the numerical model we can process the "mesh model" or "surface model", which produces a careful description of the skin of the architecture; this last model can be subsequently textured by color images. This must be considered just the beginning of the Architectural Survey process, indeed it needs several elaborations that can lead to an infinite number of possibilities of use, such as restoration, conservation and communication. The current history shows how three factors of strong structural impact have determined the evolution in the architectural survey. These are laser scanning, computer graphics and digital photography.