Estimation of canopy attributes in beech forests using true colour digital images from a small fixed-wing UAV. - Francesco Chianucci; Leonardo Disperati; Donatella Guzzi; Daniele Bianchini; Vanni Nardino; Cinzia Lastri; Andrea Rindinella; Piermaria Corona (Int. J. Appl. Earth Obs. Geoinformation, 2016)