Is there any DECAPTCHA library in .NET?

c# captcha decode
Xaqron picture Xaqron · Dec 2, 2010 · Viewed 19.9k times · Source

I'm looking for some sample projects to read CAPTCHA images. Is there any in C# or VB ?

pseudo code:

String captchaText = CaptchaDecoder(Image captchaImage);

Answer

defvol picture defvol · Jan 1, 2012

Take a look to:

Text-based CAPTCHA Strengths and Weaknesses. ACM Computer and Communication security 2011 (CSS’2011). link

The authors present a CAPTCHA breaker and explain a generic algorithm to crack standard CAPTCHAs

In this section we present our captcha breaker, Decaptcha, which is able to break many popular captchas including eBay, Wikipedia and Digg [...] Decaptcha implements a refined version of the three stage approach in 15,000 lines of code in C# [...]

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