Copy copy. Thanks. I saw the dog and his guitar and learned what a superpixel was but the math was too rigorous for me to follow along without a spotter. Last question: what is it about their approach that's novel, and why hasn't an approach like this been attempted before? "Parzen windows", whatever they are, appear to be like 50 years old so I have to assume attempts at doing stuff like this has to have been around for as long as AI itself... but again, I'm a plebian.