[1] Univ Calabria, Res Srl 3D, Arcavacata Di Rende, CS, Italy
[2] Cyprus Univ Technol, Photogrammetr Vis Lab, Limassol, Cyprus
[3] Masaryk Univ, Fac Informat, HCI Lab, Brno, Czech Republic
[4] Concordia Univ, Dept Comp Sci & Software Engn, Montreal, PQ, Canada