Web-Based Modeling. Google’s Imagery to Draw Landscape

Following the seismic events that hit the centre of Italy since August 2016, a procedure has been devised to acquire models in conditions where the object cannot be visited or no longer exists. These are a series of operations that go beyond the need to go to places, in some cases inaccessible or substantially modified by even catastrophic environmental phenomena. The procedure also includes possible integrations with data from usual detection operations (point cloud from laser-scanner and photogrammetry etc.) The procedure is applicable to the urban scale and the territorial scale. As for the city’s image, reconstruction is also done using the information on the web. Data available on internet are implicit and explicit. The first, numerical and textual metadata, can be made accessible through procedures; seconds, photos, spherical views, geo-referenced maps, etc., can be processed by photogrammetric operations to integrate digital models. Likewise, the form of the territory today is documented by scientific portals and websites for sharing information on buildings and landscape. By linking images and metadata, we are able to return prospective conditions that have generated site representations and use digital space by returning informed 3D models. The use of parametric procedures applied to data extrapolated from the web, allows expressive information otherwise unusable, contributing and widening the techniques of indirect survey for the reconstruction of urban models.