1. Center for Spatial Information (CEOSpaceTech), University Politehnica of Bucharest, Bucuresti, Romania
2. Department of Photogrammetry and Remote Sensing, Faculty of Geodesy and Geomatics Engineering, K. N. Toosi University of Technology, Tehran, Iran
3. Department of Civil, Chemical and Environmental Engineering (DICCA), University of Genoa, Genoa, Italy
4. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, China