AI project - Break simple CAPTCHA

Published: 29 November 2011
on channel: Jimin Park
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I decided to make a Google Chrome extension that breaks simple captcha on ProjectEuler, as a school AI class project. (Other people made teams, but since I like to code something 100% by myself, I volunteered to do myself.) Since PE have anti-spam system by limiting the rate of answer/minute, this can't be abused. :P

I don't know how to separate numbers well. Some CAPTCHAs are skipped, because the extension can't handle those.

It uses two k-means clustering, which I learned yesterday. It's simpler than SVM and easy to implement. :P

Two clustering are used to
1. to binarize the image (each pixels are located in 3D space)
2. to classify the image (each numbers are located in 1600D space)

BTW, the video is little faster than real. I don't know how to fix that.


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