1. Institute of Communications and Computer Systems (ICCS),Athens,Greece
2. University of Padova,Department of Geosciences,Padova,Italy
3. National Technical University,Remote Sensing Lab, School of Rural, Surveying and Geoinformatics Engineering,Athens,Greece
4. Eindhoven University of Technology,Department of the Built Environment,Eindhoven,the Netherlands
5. University of Algarve,CIMA-ISE,Portugal
6. Edgelab s.r.l.,La Spezia (SP),Italy
7. Eurisy,Paris,France