  Herbage mass yield and composition estimation is an important tool for dairy
farmers to ensure an adequate supply of high quality herbage for grazing and
subsequently milk production. By accurately estimating herbage mass and
composition, targeted nitrogen fertiliser application strategies can be
deployed to improve localised regions in a herbage field, effectively reducing
the negative impacts of over-fertilization on biodiversity and the environment.
In this context, deep learning algorithms offer a tempting alternative to the
usual means of sward composition estimation, which involves the destructive
process of cutting a sample from the herbage field and sorting by hand all
plant species in the herbage. The process is labour intensive and time
consuming and so not utilised by farmers. Deep learning has been successfully
applied in this context on images collected by high-resolution cameras on the
ground. Moving the deep learning solution to drone imaging, however, has the
potential to further improve the herbage mass yield and composition estimation
task by extending the ground-level estimation to the large surfaces occupied by
fields/paddocks. Drone images come at the cost of lower resolution views of the
fields taken from a high altitude and requires further herbage ground-truth
collection from the large surfaces covered by drone images. This paper proposes
to transfer knowledge learned on ground-level images to raw drone images in an
unsupervised manner. To do so, we use unpaired image style translation to
enhance the resolution of drone images by a factor of eight and modify them to
appear closer to their ground-level counterparts. We then ...
~\url{www.github.com/PaulAlbert31/Clover_SSL}.
