Abstract
Abstract. The paper describes the implementation of the 3D city model of the pedestrian area of Cosenza, which in recent years has become the Bilotti Open Air Museum (MAB). For this purpose were used both the data available (regional technical map, city maps, orthophotos) and acquired through several surveys of buildings and "Corso Mazzini" street (photos, topographic measurements, laser scanner point clouds). In addition to the urban scale model, the survey of the statues of the MAB was carried out. By means of data processing, the models of the same statues have been created, that can be used as objects within the city model. The 3D model of the MAB open air museum has been used to implement a Web-GIS allowing the citizen's participation, understanding and suggestions. The 3D city model is intended as a new tool for urban planning, therefore it has been used both for representing the current situation of the MAB and for design purposes, by acknowledging suggestions regarding a possible different location of the statues and a new way to enjoy the museum.
Highlights
An urban open-air museum is a peculiar site, where the works of art are surrounded by buildings; size, shape and textures of constructions and urban furniture contribute to create the museum, which is the fusion of the works of art and of the surrounding architecture
The ratio between the maximum deviations (ToF to Triangulation laser scanner) is about 4 and the ratio between the standard deviations is about 6; for the ToF laser scanner, deviations greater than 3 mm are attained in few points, while the standard deviation is influenced by the smoothing of the sharp edges, due to the automatic procedure
To improve the ToF model by using breaklines, but taking into account the value of the standard deviation and the goal of the surveying, we decided to use the scans obtained by the ToF laser scanner and to use an automatic procedure without further refinements
Summary
An urban open-air museum is a peculiar site, where the works of art are surrounded by buildings; size, shape and textures of constructions and urban furniture contribute to create the museum, which is the fusion of the works of art and of the surrounding architecture. A 3D City Model is a three-dimensional digital representation of an urban environment built by using data obtained from multiple sources, such as stereo aerial imagery, Lidar data from aircraft and, for detailed models, data obtained by close-range acquisitions (photogrammetry, laser scanner) It contains a large number of objects of different classes, so a multi-resolution representation is generally required. One of the most important artistic emergencies of Cosenza is certainly the Bilotti Open Air Museum (MAB), built in the last few years thanks to the donations of the patron Carlo Bilotti and continued by his brother Enzo. It consists of several sculptures, sited in the pedestrian area of the city, along the. A different location of the statues, the use of new basements and the creation of zones for the enjoyment of works of art could be efficiently shown through virtual reality, providing valuable information
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