用于对数字图像的处理，低通滤波器和高通滤波器。用VC++打开meto.dsw，重建，运行即可。-used for digital image processing, low-pass filter and a high-pass filter. VC opened meto.dsw, reconstruction, can be run.

使用VC编写的低通滤波器，能够读取.dat文件内数据，并执行滤波算法，最后将离散数据以连续曲线绘出。

频域低通滤波（理想低通滤波器、梯形低通滤波器、巴特沃斯低通滤波器、指数低通滤波器），频域高通滤波（理想高通滤波器、梯形高通滤波器、巴特沃斯高通滤波器、指数高通滤波器）-Frequency-domain low-pass filter (ideal low-pass filter, ladder low-pass filter, Butterworth low-pass filter, the index low-pass filter), frequency-domain high-pass f

visual c++写的傅里叶变换，以及在频域实现低通滤波和高通滤波(Fourier transform written by visual c++ and low-pass filtering and high pass filtering in frequency domain)