As I’ve mentioned in a previous post I’ve been working a lot with OpenGL lately for a CG class. Every week we gave a presentation about some features and implementation details, to bad a lot of it is too much out of context if you haven’t followed the class. However I’ve found a few slides about cool-to-warm shading (a technique by Amy Gooch) and edge detection that are separate enough to post here, I hope it’s useful!

An image from that technique