unet style image translation from image of hive entrance to bitmap of location of center of bees.
trained in a semi supervised way on a desktop gpu and deployed to run in real time on the hive using either a raspberry pi using a neural compute stick or a je vois embedded smart camera
see this blog post for more info..
here's an example of predicting bee position on some held out data. the majority of examples trained had ~10 bees per image.
the ability to locate each bee means you can summarise with a count. note the spike around 4pm when the bees at this time of year come back to base.