Transformation of slope microrelief across an unused mountain forest road - replication data

Data collection was carried out using a DJI Phantom 4RTK UAV equipped with a 1-inch CMOS camera (20MP) and a 24 mm equivalent focal length lens. The UAV was supported by an RTK GNSS module to ensure precise trajectory determination.

The UAV flights were meticulously planned to achieve 80% forward and side image overlap, with a target Ground Sampling Distance (GSD) of 7 mm. Georeferencing of the UAV-photogrammetry data was ensured by utilizing a network of 25 Ground Control Points (GCPs) and 17 Check Points (CPs), whose coordinates were measured using the RTK GNSS method. The UAV-photogrammetry data processing was carried out using Agisoft Metashape Professional, which included image alignment, tie point filtration, optimization of image alignment with camera calibration parameters, and rigid transformation of the image block using GCP coordinates.