Fuente: WIPO "tomato" An information processing device 200 includes an acquisition unit 211 configured to acquire a plurality of images captured by one or more imaging devices 311 in a specific region of a farm field and including one or more crops, an identification unit 212 configured to identify an overlapping region overlapping between regions of the plurality of images, a first calculation unit 216a configured to calculate a first number of the crops in the overlapping region, a second calculation unit 216b configured to calculate a second number of the crops in a non-overlapping region other than the overlapping region in each of the regions of the plurality of images, and a third calculation unit 216c configured to calculate a third number of the crops in the specific region based on the first number and the second number.