图像处理中关于灰度图像的处理占了一大部分。而灰度变换是数字图像处理必须掌握的知识。这里提供灰度变换源代码，仅供参考-Image Processing on the gray image of the treatment accounted for the majority of one. The gray-scale transformation of digital image processing must master knowledge. Here to provide gray-sca