"One of the most persistent images of Vietnam is that of farmers bending over rice fields, wearing conical, woven hats as they work by hand. Yet, that mental image could use a digital-age update: along the lower Mekong River, rice fields are often empty of people. Instead, drones—sometimes the size of suitcases—fly over the fields."
https://hakaimagazine.com/videos-visuals/rice-farming-gets-an-ai-upgrade/