I know this topic is not clearly relevant to the forum, but I think it's fun and interesting.
I'm looking for computer vision riddles - fun and interesting questions that have a clear and precise solution. For example the following: We have a binary image with paths (contours) that are one pixel wide. Come up with an algorithm to find the ends of the paths. I know of two solutions to this riddle.
Do you know of any other riddles? I'll be happy to hear some!