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Leveraging AI to estimate caribou lichen in UAV orthomosaics from ground photo datasets; Richardson, G; Leblanc, S G; Lovitt,
J; Rajaratnam, K; Chen, W. Drones vol. 5, issue 3, 2021 p. 1-16,
https://doi.org/10.3390/drones5030099 
Open Access
(NRCan Cont.# 20210220)