1. Associate Professor, Geomatics Section, Civil Engineering Dept., Indian Institute of Technology Roorkee, Uttarakhand 247667, India.
2. Senior Researcher, Dept. of Systems Engineering and Informatics (Geoinformatics Group), Faculty of Economic and Administrative Sciences, Univ. of Pardubice, 53210, Czech Republic (corresponding author).
3. Professor of Remote Sensing, Politecnico di Torino, 10129 Turin, Italy.
4. Professor, Civil Engineering Dept., Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India.