Aerofotogrametría con UAV, procesamiento con AGISOFT.

Abstract

Technological progress has made it possible to develop new techniques for topographical surveys through Aerophotogrammetry using drones and photogrammetric processing software with reliable and precise results, reducing the prominence from the use of the total station, generating those who know the subject at an advantage. The present study has the purpose of executing an Aerophotogrammetric survey in the "El Recreo" neighborhood using the UAV FV8 Topodron of the EPN, for which it was necessary to carry out the flight planning considering the most relevant technical specifications of the IGM [1]. In addition, different methods were used for the seizure of the Ground Control Points (GCP) which are necessary for the georeferencing of the images during the processing with the Agisoft PhotoScan software. The methodology was used by the IGN technical manual for obtaining cartographic products from RPA images, scale 1:1000 of the IGN [2] is used for processing with the Agisoft PhotoScan software in order to obtain: Digital Elevation Models (DEM), Digital Terrain Models (MDT), Orthophotos and Contour lines in low and high quality that will serve to generate longitudinal pro files, cross sections and the planimetric map of the study area created from the Civil 3D software. The results obtained were better for low-quality processing, in which achieved millimetric mean square error (MSE), better elaborated contour lines and an orthophoto of better visual quality which was favorable to perform the planimetry, longitudinal profile and cross sections that are necessary studies to carry out works such as sewerage for the “El Recreo” neighborhood located in the city of Santo Domingo, Ecuador.