Dr. Gianluca Casagrande is an Associate Professor of Geography and Scientific Director of the Geographic Research and Application Laboratory (GREAL) at the Università Europea di Roma, Italy.Dr. András Sik is the Director of Geospatial Services at the Lechner TudásközpontLechner Tudásközpont in Budapest, Hungary.Dr. Gergely Szabó is an Associate Professor in the Department of Physical Geography and Geoinformatics at University of Debrecen, Hungary