运用快速傅里叶转换法fft2和逆转换ifft2反复迭代进行对二维平面函数的处理程序。-Fft2 by applying the method of fast Fourier transformation and reverse change ifft2 repeated iteration of two-dimensional plane function handler.

短时傅里叶变换逆变换，采用MATLAB编的程序-Short term Fu Liye transform inverse transform

图像傅里叶变换和逆变换的ifft2和fft2的简单使用和显示 正确的ifft2方式使用和错误的ifft2方式使用-Image Fu Liye transform and inverse transform of ifft2 and fft2 are simple to use and display the correct ifft2 mode and use the wrong ifft2 mode