Análise da qualidade cartográfica de produtos gerados por RPAS multi-rotor de pequeno porte

Abstract

More and more is being said about the quality and constancy of the products obtained using Remotely Piloted Aircraft (RPAS) technologies, orthomosaics being one of them. In this work the orthomosaics were studied to evaluate the quality and scales of the products generated to have a scale compatible with a topographic map with Standard of Cartographic Accuracy (SCA) Class A. The study area is located in the state of Goiás, in its capital Goiânia, in Jardim Novo Mundo. The images obtained by the RPAS underwent nine processes, six of them in two commercial software programs and three in a free software program, and for each software zero, four and eight control points were processed. For their validation, coordinates (φ, λ, h) of 31 pre-signaled points were collected using a GNSS positioning system and RTK collection technique as reference. With verification, it can be seen that all orthomosaics achieved Class A for scales 1:5,000 except for the orthomosaic without control points from OpenDroneMap software and the orthomosaic with eight control points from MetaShape PhotoScan software which achieved Class A for scales 1:10,000.