This semester I took a class on Discrete Wavelets. It was awesome. The coolest part was our group final project. My group had the best topic by far: Decoding a Captcha! (Click on any of the following images to view them full size) (/uploads/file_captcha.jpg) We’ve all seen Captchas before. They are used on websites to make sure that the person on the website is a real human, not a computer program.