通过灰度变换将一幅图象转换为另一幅具有均衡直方图，即在每个灰度级上都具有相同的象素点数的过程。...

代码说明：

通过灰度变换将一幅图象转换为另一幅具有均衡直方图，即在每个灰度级上都具有相同的象素点数的过程。-Through the gray-scale transformation to an image is converted to another site with a balanced histogram, that is, in each gray level, both have the same pixel point process.