captchacker - Captcha Breaking using Support Vector Machines - Google Project Hosting 验证码识别

captchacker - Captcha Breaking using Support Vector Machines - Google Project Hosting

The Captchacker Project: Captcha Breaking using Support Vector Machines

Abstract

The Captchacker Project exploits the potential of Support Vector Machines to break visual captchas. We define “simulation-based” and “captcha-based” methods to build our models.

Our method performs extremely well for breaking easily-segmentable captchas, with a robust recognition. We also give a generalization to non easily segmentable – thus harder to break – captchas, using Dynamic Programming. Besides, we explain how to get a large training set without going through the long and boring task of manual labelling.

Finally, our source code is available here.

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