Mohamed Fawzy, Department of Photogrammetry and Geoinformatics, Faculty of Civil Engineering, Budapest University of Technology and Economics, Budapest, Hungary. Civil Eng. Dept., Faculty of Engineering, South Valley University, Qena, Egypt, Hungary; Mohammad Dowajy, Tamas Lovas, Barsi Arpad, Department of Photogrammetry and Geoinformatics, Faculty of Civil Engineering, Budapest University of Technology and Economics, Budapest, Hungary, Hungary