对于初学者来说，这段代码比较容易理解，如果对图像增强有一定的了解的话，此代码就更易理解了。它是对理想高通和低通滤波器的设计。-For starters, this code easier to understand, if the image enhancement have some understanding of words, the code is easier to understand. It is the ideal qualcomm and low pass filter design.