OCR识别验证码技术。根据不同的特征特性，选用不同的数学距离函数！文 件里收录有3中识别技术。分别为调用OCR的dll识别，内存图像操作识别，不调用 dll识别验证码技术。-The OCR identification verification code technology. According to the different characteristics, choose different mathematical distance functions!!!!! Article 3 in a collection of recognition technology. Call the OCR respectively DLL recognition, memory image recognition, not the operation DLL identification verification code technology.