Estudo de caso: resultados aerofotogramétricos obtidos com VANT de baixo custo

Abstract

The aerial photogrammetry field became more popular after UAVs began to be used for data collection purposes. UAVs can make photogrammetry uses more popular than never by spreading its utilization to urbanization tasks and surveying of small rural areas. These mini aircrafts can obtain faster and more detailed results than the conventional surveying methods, making easier for the stakeholders to take a decision. The mapping activity is divided in three areas: flight planning, data acquisition and processing. By the component’s system integration it’s possible to generate the DEMs and the orthophotos which are the final products of the mapping activity. This study analyzes the outcomes of an aerial surveying activity performed at the parking lot of the Federal University of Technology – Paraná, Curitiba, by an UAV Phantom 3 Advanced, focusing on the results of error analysis and dispersion comparing the georeferenced control points measured by the RTS and its calculated position on the DEM. In addition, the study presents six cases on uses of UAVs for construction tasks, describes the procedures to generate the models, defines the ideal control points’ quantity to be used on the test bed area, and compares the generated results with the case studies. Considering the UAV system limitations, the outcomes obtained in this research were satisfactory when compared to the results obtained by more sophisticated and costly equipment pieces.