Multimodal Data Collection System for UAV-based Precision Agriculture Applications. - Emmanuel K. Raptis; Georgios D. Karatzinis; Marios Krestenitis; Athanasios Ch. Kapoutsis; Kostantinos Ioannidis; Stefanos Vrochidis; Ioannis Kompatsiaris; Elias B. Kosmatopoulos (IRC, 2022)