Sperimentazione di modelli tridimensionali nello studio dell'architettura storica

Three-dimensional models experimentation in studying historical architecture Aim of the research is studying how surveying and modelling digitaI techniques can be used as instruments far architectonicalanalysisand representation. Case-studies of the research are the churches of S. Giustino in Paganica (XII-XV-XVIII-XX centuries) and of S. Paolo in Peltuinum (XII-Xlii-XVIII centuries):they are medieval buildings, characterized by stratification phenomena,and during the twentieth centu ry modified by stilisti restorations, to bring them back to presumable originaI asset.They have been surveyed with integrated method.3D-models describes architectonic characteristics such as geometric dimensional, spatial, historical, metrologic-proportional ones; models give the possibility to visualize building's constructive phases end, mapped with photographical images, allow to represent materials, colou rs and constructive aspects. DigitaI photogrammetry, used according to an inverse camera process, givesthe possibility to re-construct, by archival photos,disappeared spatial and architectonical configurations. The 3D models can be instruments to interrelate and analyse in formations: in this way 3D models are data base. This kind of 3D model requires a plan ning according to digitaI components organization and layers stratification: this is fundamental far the model's capability to collect data, be managed and interrogated. So 3D models are disarranged according to constructive elements; a database model in CAD environment is built by iperlinking model's elements to a data management matrix.