说明：  输入图像后，运行得到图像傅里叶转换后频域图像，经过巴特沃斯低通滤波器，巴特沃斯高通滤波器，及同态滤波器处理后的效果图
(After the image is input, the image after the image Fu Liye conversion is run, the effect map after the Butterworth low pass filter, the Butterworth high pass filter, and the homomorphic filter are processed.)