1. Department of Photogrammetry and Remote Sensing, Geomatics Engineering Faculty, K. N. Toosi University of Technology, Tehran, Iran
2. Department of Civil Engineering and Surveying, Institute of Photogrammetry and GeoInformation (IPI), Leibniz Universität Hannover (LUH), Hannover, Germany
3. School of Electrical and Information Engineering and the Wits Institute of Data Science, University of the Witwatersrand, Johannesburg, South Africa
4. Faculty of Engineering and Science, University of Agder, Kristiansand, Norway