captcha break based on opencv2, tesseract-ocr and some machine learning algorithm.

The simplest captcha breaking.

CAPTCHA from http://download.csdn.net/

CAPTCHA from http://submail.cn/sms

CAPTCHA from http://login.weibo.cn/login/.
(Note: This website has changed now, and the captcha is not available!)

CAPTCHA of http://passport.jikexueyuan.com/sso/verify

CAPTCHA of http://login.sina.com.cn/cgi/pin.php?r=8787878&s=0

MIT