Affiliation: | 1. Geomatics Engineering Group, Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Indiasidk4dce@iitr.ac.in;3. Geomatics Engineering Group, Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, India;4. Department of Remote Sensing, University of Würzburg, Würzburg, Germany;5. Institut für Geographie, Friedrich-Alexander Universit?t Erlangen-Nürnberg, Erlangen, Germany |