Determining the Leaf Area Index and Percentage of Area Covered by Coffee Crops Using UAV RGB Images. - Luana Mendes dos Santos; Gabriel Araújo e Silva Ferraz; Brenon Diennevan de Souza Barbosa; Adriano Valentim Diotto; Marco Thulio Andrade; Leonardo Conti; Giuseppe Rossi (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2020)