形状上下文算法。做好预处理后，使用此算法匹配验证码，识别率非常高，且无视扭曲，变形。-The shape context algorithm. Do a good job pre-treated using this algorithm matches the verification code, recognition rate is very high, and ignore the twisted, distorted.

使用C++读取bmp，jpg等图片信息到内存，详细介绍了图片读取方法，很适合新手学习，大神无视。-Using c++ reads the BMP, JPG image information into memory, such as image read method was introduced in detail, very suitable for beginners learning, a great god to ignore.