On the other hand, drones avoid these errors and allow us to obtain accurate data, allowing surveys to be carried out with greater accuracy, significantly increasing safety at work and allowing us to reach places that are difficult for humans to access. Manually measuring sites can lead to several (human) errors on the part of professionals. The accuracy of the work is the main advantage of photogrammetry with a drone. The starting data is always a set of photographs and therefore a set of two-dimensional digital images that are processed by the software to extract three-dimensional data. The main application fields are cultural heritage, archaeology, geology, technical and thematic cartography, crime and accident scene, human bodies survey, and rapid survey photogrammetry from video.
In recent years, drone photogrammetry has become part of the daily life of many professionals in many different sectors. The vast number of images captured from terrestrial and aerial photogrammetry will also permit to use of the Historic Building Information Modelling (HBIM) model in an eXtended Reality (XR) project developed ad-hoc, allowing different types of users (professionals, non-expert users, virtual tourists, and students) and devices (mobile phones, tablets, PCs, VR headsets) to access details and information that are not visible from the ground. Research results and performance are oriented to improve computer vision and image processing integration with Unmanned Aerial System (UAS) photogrammetric data to enhance interactivity and information sharing between user and digital heritage models. The statues and the decorative apparatus are recorded with the photogrammetric technique using both a terrestrial camera and an Unmanned Aerial Vehicle (UAV).
This study aims to enrich the knowledge of the monument Arco della Pace in Milan, surveying and modelling the sculpture that crowns the upper part of the building.
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