The images and annotations (LabelImg) in this folder are acquired during the H2020 OPTIMA project. The images were acquired in orchards, vineyards and fields in three European countries (France, Italy, Spain). The images represent three diseases in three crops: apple scab in apple, alternaria in carrot, downy mildew in grape. The txt files contain the bounding box locations for the diseases (bounding box detection for YOLOv5 object detection). The folder contains three subfolders: apple_applescab ms: multispectral images acquired on 10-05-2022 in Spain with the Silios multispectral camera rgb: rgb colour images acquired on 27-05-2021 and 10-06-2021 in Spain with the NEON-202B-JT2-X smart-camera carrot_alternaria ms: multispectral images acquired on 23-09-2021 and 24-09-2021 in France with the Silios multispectral camera rgb: rgb colour images acquired on 02-09-2021, 24-09-2021, and 04-11-2021 in France with the NEON-201B-JT2-X smart-camera grape_downymildew ms: multispectral images acquired on 06-06-2019 in Italy with the IMEC multispectral camera rgb: rgb colour images acquired on 23-07-2021 in Italy with the NEON-201B-JT2-X smart-camera