ABSTRACT
This article outlines the process of creating a terrain altitude model using data collected from a photogrammetric flight conducted with a drone. The flight was carried out in a village located in the northeastern part of the Silesian Voivodeship, in Poland. A total of 129 aerial photographs were taken, with a degree of coverage ranging from 60% to 80%. The photos were processed in the Agisoft Metashape Professional program, and a point cloud and the terrain altitude model were created based on them. The accuracy of the altitude coordinate of the points forming the Digital Terrain Model was determined based on the heights of 126 points, previously measured using a GPS receiver using the RTN method. The average value of the relative error in the determination of the point height in the Digital Elevation Model was 0.88 m.
