There is a very funny prototype Captcha I've seen on the net. They take the photo's from "hot or not" and put them in a 3X3 grid and ask the user to pick the hot ones. The other most effective one is a 3X3 grid asking the user to tell the difference between different furry animals. Computer vision is way behind when it comes to figuring out fuzzy things.
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As a Comp Sci PH.D. student myself, This seems like a really weird way of doing research. Are you going to cite slashdot? I'd love to see that.
There is a very funny prototype Captcha I've seen on the net. They take the photo's from "hot or not" and put them in a 3X3 grid and ask the user to pick the hot ones. The other most effective one is a 3X3 grid asking the user to tell the difference between different furry animals. Computer vision is way behind when it comes to figuring out fuzzy things.