Fig. 8: Applying AirSurf-Lettuce to count and classify millions of lettuce heads in three plantation fields across the Cambridgeshire, UK.

a–c AirSurf-Lettuce is applied to count and classify millions of lettuce heads (small is coloured blue, medium is coloured green, and large is coloured red), in three plantation fields in the Cambridgeshire, UK. d The overall quantification of Lettuce heads and size categories in three fields