字符验证识别练习，可进行字符拆分，比如验证码、车牌号、身份证号等字符的识别与拆分，使用了比较多的外部类库，比如AForge.Controls.dll、AForge.Genetic.dll、AForge.MachineLearning.dll等，并配合有XML文件供参考-Character Verification recognition exercises, can be split characters, such as the verification code, license plate