图像增强—频域滤波

2．利用MATLAB提供的低通滤波器实现图像信号的滤波运算，并与空间滤波进行比较。

3．利用MATLAB提供的高通滤波器对图像进行处理。-Image enhancement- frequency domain filtering 2. Using MATLAB low-pass filter to provide an image signal filtering operation is compared with the spatial filtering. 3. Using MATLAB provides a high-pass filter for image processing.