I am a land surveyor, GIS expert, teacher and programmer
OSGeo Charter member Head of GeoForAll Lab Budapest OSGeo advocate Founder of OS projects (GeoEasy, Ulyxes, Find-GCP) Organizer of Hungarian local FOS4G events FOSS4G/FOSS4G Europe speaker, committee member
A new small open-source project is introduced in this presentation. The Find-GCP project can be used to automatize the measurement of the Ground Control Points (GCP) coordinates on images. It can be used in close photogrammetry tasks. The markers and their unique IDs are detected on the the photos using the ArUco open-source library which is part of the OpenCV contrib package. The output is compatible with OpenDroneMap (ODM) and VisualSfM, two well-known open source project. Beside the command line gcp_find.py tool, there are some utilities in this project to generate ArUco markers, visually check the results and more.
This project comes from the Geo4All Lab of the Budapest University of Technology and Economics.