My guess is that it's real, but that it doesn't usually work as well as the example images provided. If it really works for any kind of input sketch, then how come there are so many images of dogs catching frisbees and bears catching fish?
Yup. When I see a real-time demonstration showing a bear catching a frisbee (probably, but not definitely, while jumping out of a shark-threatened helicopter), then I'll believe it.
Edit: I'll also believe it if anyone on this site claims to have seen same.
