Verification of the accuracy of photogrammetric 3D models by drone

Abstract

In recent years, drones have been widely used for surveying terrain and creating 3D models. High accuracy is required for surveying and 3D modeling. One of the advantages of using drones is that the angle and distance of view can be easily changed. In this study, we will conduct an experiment to see how the 3D model created by photogrammetry differs depending on the position of the drone, the number of photos taken, and the resolution of the photos. The video images obtained by using DJI's dji mini2 were used for photogrammetry. For photogrammetry, Agisoft's Metashape photogrammetry software was used. Comparisons of the 3D models showed that the highest accuracy was obtained at low altitudes, when the number of photos was large, and when the resolution was high. Future plans include programmed autopilot and LiDAR experiments.