基于OpenCV的图像处理技术在验证码文字识别中的应用

OpenCV-based image processing technology:application in text recognition of CAPTCHA

随着我国有色企业信息化发展的步伐的加快,信息安全是一个不可忽视的重要要素。验证码(CAPTCHA,全称为“Completely Automated Public Turing test to tell Computers and Humans Apart”)是一种用于自动区分计算机和人类的反向图灵测试程序。设计实现一种验证码降噪识别算法模型,对常见类型的验证码进行了识别和分析。研究表明对于字体类型非单一类型的验证码更加难以识别,可用于有色企业信息安全领域。

As the non-ferrous enterprises in China accelerate their development of information technolo-gy,information security is an important factor that cannot be ignored.CAPTCHA is a reversed Turing test program which could be used to autonomously distinguish between computers and human.A captcha noise reduction recognition algorithm model was designed and implemented,and a common type of CAPT-CHAs were identified and analyzed.Studies have shown that for CAPTCHAs with multiple font types are more difficult to identify,thus could be used to improve information security in the non-ferrous industry.