Sistema de calibração de imagens digitais adquiridas de câmeras não métricas acopladas em drones

Abstract

With the constant advancement of technology, currently Aerophotogrammetry and aerial mapping has enabled a grater application of digital photogrammetry in obtaining more detailed information on the earth’s surface. In photogrammetry processes, the importance of knowing the camera calibration parameters is notorious, considering taht they are fundamental for the acquisition of cartographic products with precision and reliability. The ease access to Remotely Piloted Aircraft (RPA) equipment, with its low cost, has enabled the use of this type of equipment by many companies. This study aims to calibrate the camera integrated in the Phantom 4 Pro in the city of Ântonio Prado Rio Grande do Sul, where the mathematical method of the collinearity Equation adjusted to the BROWN Method (19971) will be applied to determine the internal parameters of the camera and generate a calibration certificate. To carry out the work itself, the equipment used was: ARP Phantom 4 Pro with DJI integrated camera, GNSS Receiver Emlid Reach RS2 and targets materialized in the field. The methodology applied to obtain the generated data were: The location of the study area, precious knowledge of the place, flight planning, 10 control points were used, geodetic survey with the GNSS receiver Emlid Reach RS2, aerial photogrammetric flight with the Phantom 4Pro, processing of data obtained by GNSS, photogrammetric processing and camera calibration using the mathemattical method of the Collinearity Equation adjusted for the BROWN (1971) in the agsofty Metashape software, where it will be used to determine the internal parameters of the camera, thus generating a report technician for aerial survey activities using RPAS.