Surveys and new visions of the ancient centre of Naples

Among the ongoing research on the ancient center of Naples, this paper offers an example of the potential of the disciplines of survey and representation that allow to critically manage the role of architecture and urban space as a memory device in the processes of vision and recognition of the image of the city. The main goal of the research, of which a fragment is proposed here, is to recognize the configurative distribution of urban variables, through a discretization approach and multiscalar analysis that, exploiting the potential of a territorial in formation system, combines cartographic data, images, historical sources and new surveys and representations/visualizations derived from data segmentation and classification approaches. The analysis and documentation activities have been applied to significant elements of the urban structure, such as the intersections of some cardo with the lower decumanus identified by Via Benedetto Croce - via San Biagio dei Librai - via Forcella, particular elements both for shapes and for dimensions. The careful use of UAV allowed the survey of the facades of buildings overlook ing the narrow alleys of the ancient city that, in most cases, would be results not surveyed with laser scanning or traditional survey techniques. The successive phases of photomodelling and infographic 2D/3D restituitions have allowed to highlight, through a different approach to the reading of reality, peculiarities and volumetric proportions difficult to perceive by the pedestrian, intent to follow the narrow streets, almost sucked out of them. The post-processing phases, through the experimentation of semantic seg mentation algorithms, made it possible to extract the elements and information layers of the image of the stratified city, as well as for the elaboration of drawings on an architectural and detailed scale.