It's not a perfect system, at least right now. Koike estimates that it takes about 2-3 days to train the sorting AI, even using very low-resolution (80 x 80) pictures. And even the 7,000 photos Koike used for that training probably weren't enough. While the sorter recognized 95 percent of test images, real-world sorting dipped to about 70 percent. Having said that, it's not the immediate results that matter. The technology can get better, and it hints at a future where robotic farm equipment handles many mundane tasks that previously required a human's watchful eye.