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The purpose of this paper is to discuss how much the phases of flight planning and the setting of the camera orientation can affect aUAVs photogrammetric survey. The test site chosen for these evaluations was the Rocca of San Silvestro, a medieval monumentalcastle near Livorno, Tuscany (Italy). During the fieldwork, different sets of data have been acquired using different parameters forthe camera orientation and for the set up of flight plans. Acquisition with both nadiral and oblique orientation of the camera havebeen performed, as well as flights with different direction of the flight lines (related with the shape of the object of the survey). Thedifferent datasets were then processed in several blocks using Pix4D software and the results of the processing were analysed andcompared. Our aim was to evaluate how much the parameters described above can affect the generation of the final products of thesurvey, in particular the product chosen for this evaluation was the point cloud

the international archives of the photogrammetry, remote sensing and spatial information sciences/international archives of the photogrammetry, remote sensing and spatial information sciences

THE INFLUENCE OF FLIGHT PLANNING AND CAMERA ORIENTATION IN UAVs PHOTOGRAMMETRY. A TEST IN THE AREA OF ROCCA SAN SILVESTRO (LI), TUSCANY