Investigation of the effect of height difference and geometry of GCP on position accuracy of point cloud in UAV photogrammetry
Abstract
In this study, the effect of the height difference, geometry, and number of GCPs on the positional
accuracy of point cloud was investigated in UAV photogrammetry. It has been determined that the
topographic change of the study area, the geometric structure of GCPs, and the distance between
GCPs are the most important factors in GCP network design. It was observed that the GCP network
design is more important than the number of GCPs in the UAV Photogrammetry method to
increase the positional accuracy.