提供了同态滤波和周期噪声去除两种图像处理算法的源代码，另外还有对算法的说明文档，还有可执行程序以及试验图像，想的很周到奥！-Homomorphism provides noise filtering and cycle two image processing algorithms to remove the source code, as well as documentation of the algorithm, as well

利用快速傅里叶变换，在频率域中除去图像周期噪声(Take advantage of the fast Fourier transform to remove the image periodic noise in the frequency domain)