Captcha detection

Captcha detection

Posted Dec 25, 2006 11:52 UTC (Mon) by aprilmay (guest, #42405)
Parent article: Fighting image spam

Months after this thread, has someone found a good solution ?

Maybe the best way would be to detect that an image is indeed a captcha, no need to do ocr. I don't see any reason for a real mail to send a captcha.

I guess this process would be far less CPU expensive that the full OCR (which could be always defeated by new captcha builder imho).

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