zlogic writes: "I'm about to start writing my PhD thesis, but haven't decided on its topic yet. I've worked with image recognition and feature detection. Could you suggest a real-world image recognition/processing problem that needs solving? I thought up some ideas, but want to do something useful instead of inventing a solution to a non-existing problem."
If you push the "extra ice" button on the soft drink vending machine, you won't
get any ice. If you push the "no ice" button, you'll get ice, but no cup.