Charp验证码识别示例，包括所有CSharp处理图像的函数，包括去噪矫正等过程,对简单验证码可识别，主要是阐述其原理。-Charp sample identification code, including all images CSharp processing function, including correction, such as denoising process, the code can be simple to identify, mainly on its princip

图像基础处理——透视矫正的程序代码，把图像还原-Image basic processing- perspective correction code to restore image