Resumen de La fotogrametría SfM mediante UAS para la documentación de lasfortificaciones de la Alpujarra (Granada y Almería, España)
Jorge Rouco Collazo, José Antonio Benavides
Structure from Motion photogrammetry has become in the last years one of the most used methodologiesfor three-dimensional recording in several scientific fields thanks to its great precision and low cost.Documentation of the building heritage has not been blind to this advance in technique. The aim of thispaper is to present the methodology, issues and results of the application of the photogrammetry to recordthe Andalusian fortresses of the Alpujarra, the southern face of Sierra Nevada (Almeria and Granada,Spain). This was carried out through drone-based photogrammetry with GNSS topographical support.Altogether, we have documented 20 rural fortresses. Photogrammetry has revealed itself as a surveyingmethod of great quality and versatility on field. The 3D models of the fortifications have been the core basefor the subsequent archaeological analysis. They have also become an essential repository for the future,given the difficult conservation of these structures located in marginalized rural areas.
