title: Positional quality assessment of orthophotos obtained from sensors onboard multi-rotor UAV platforms.
abstract: In this study we explored the positional quality of orthophotos obtained by an unmanned aerial vehicle (UAV). A multi-rotor UAV was used to obtain images using a vertically mounted digital camera. The flight was processed taking into account the photogrammetry workflow: perform the aerial triangulation, generate a digital surface model, orthorectify individual images and finally obtain a mosaic image or final orthophoto. The UAV orthophotos were assessed with various spatial quality tests used by national mapping agencies (NMAs). Results showed that the orthophotos satisfactorily passed the spatial quality tests and are therefore a useful tool for NMAs in their production flowchart.
authors.affiliation: Department of Graphic Engineering and Geomatics, University of Cordoba, Campus de Rabanales, 14071 Cordoba, Spain. ig2mecaf@uco.es.
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Mesas-Carrascosa
authors.affiliation: Department of Graphic Engineering and Geomatics, University of Cordoba, Campus de Rabanales, 14071 Cordoba, Spain. inmaclavero@uco.es.
authors.forename: Inmaculada Clavero
authors.initials: IC
authors.lastname: Rumbao
authors.affiliation: Departamento de Suelos y Recursos Naturales Facultad de Agronomía, Universidad de Concepción, 3780000 Concepción, Chile. jbarrera@udec.cl.
authors.forename: Juan Alberto Barrera
authors.initials: JA
authors.lastname: Berrocal
authors.affiliation: Department of Graphic Engineering and Geomatics, University of Cordoba, Campus de Rabanales, 14071 Cordoba, Spain. agferrer@uco.es.
authors.forename: Alfonso García-Ferrer
authors.initials: AG
authors.lastname: Porras