这是用C#写的一个小型图像处理应用程序，包含有中值滤波，椒盐噪声，高斯低通等功能。-It is written in c# of a small image processing applications, contains the median filter, salt &pepper noise, gaussian low-pass etc. Function.

数字图像频域滤波处理，分别进行二阶巴特沃斯(Butterworth)高通、低通滤波器。-Digital image processing frequency domain filtering, respectively second-order Butterworth (Butterworth) high pass, low pass filter.

可以对图像进行高斯低通滤波，需要提供一个img参数即为图像，和D0(Gauss low-pass filtering for image)