1. School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran, Tehran, Iran
2. School of Surveying and Geospatial Eng., College of Eng., University of Tehran, Tehran, Iran
3. Centre Eau Terre Environnement, 490 rue de la Couronne, Institut National de la Recherche Scientifique, Quebec City, QC G1K 9A9, Canada
4. Department of Geomatics Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran