1. Department of Electronics and Nanoengineering, School of Electrical Engineering, Aalto University, Helsinki, 02150, Finland
2. Department of Forestry and Forest Economics, Faculty of Natural Resources, University of Tehran, Karaj, Iran
3. Department of Forest Sciences, University of Helsinki, P.O. Box 27, Helsinki, FI-00014, Finland
4. Department of Geography, Remote Sensing Laboratories, University of Zurich, Winterthurerstrasse190, Zurich, 8057, Switzerland