Bill Psomas, Ioannis Kakogeorgiou, National Technical University of Athens, Greece; Nikos Efthymiadis, Giorgos Tolias, Ondřej Chum, Czech Technical University in Prague, Czech Republic; Yannis Avrithis, Institute of Advanced Research in Artificial Intelligence (IARAI), Austria; Konstantinos Karantzalos, National Technical University of Athens, Greece