La rappresentazione 3D del patrimonio architettonico-urbanistico mediante fusione di dati laser, fotogrammetrici ed elaborati di rilievo diretto

Some topics of the surveying and the representation of architectonic and urban spaces are here described, in particular mention to the data processing carried out for the main public square (Piazza Vittoria) and for the Castle of Gorizia (Italy). First of all, the steps of the aerial surveying and the terrestrial one, both achieved by integrated laser/photogrammetric systems, are treated as well as their optimal fusion. Afterwards, these data are integrated with digitalized paper mappings, as direct surveys or historical maps, suitably geo-referenced. That allows different photo-realistic and/or virtual 3D representations of such environments. At last, the realization of the model in VRML format is described, allowing the interactive navigation and providing information about each selected object since belonging to a “3D City Model & GIS” currently in completion.