John over at Dexter Industries has been in touch. He’s been playing around with Google Cloud services, and in particular the Google Cloud Vision API. The API is able to take an image and then interpret it to determine what the camera is “seeing”. He’s written the whole thing up as a tutorial. Bear in mind that GCV is a paid-for service but there’s a 60-day free trial to try things out with. Take a look at the tutorial here.