Fuente: Wipo "precision agriculture" Described herein are technologies for tracking crop variety in a field while harvesting a crop. In an embodiment, a camera mounted to a harvester captures images of a crop and a computing system determines characteristics of the crop in the images (such as its height, color, and density). The aforesaid two steps occur continuously as the harvester moves through a field. Also, while the harvester moves through the field, the computing system determines whether the determined characteristics deviate from known characteristics of a first variety of the crop. When the determined characteristics deviate from the know characteristics beyond a threshold, the portion of the images containing the deviating characteristics is labeled as including a second variety of the crop. Also, the images are geotagged and the computing system generates a map of the varieties of the crop based on the labeled and geotagged images.