采用OPENCV实现傅里叶正逆变换，在控制台下显示图像处理结果，处理的图片只针对方图，并且是2的幂次长度的图像,adopt the FFT tranformation and IFFT tranformation in OPENCV

FFT 以及 IFFT 在OpenCV环境下的演示例程。理解傅立叶变换及反变换的好资料-FFT and IFFT in the demonstration under OpenCV routines. Fourier transform and inverse transform understanding of good information

opencv+mdi实现，包含数字图像处理基本几何变换，以及fft，ifft，kmeans和形态学处理、直方图均衡化、伪彩色增强、指数增强等操作。-opencv+ mdi implementation, including basic geometric transformation of digital image processing, and fft, ifft, kmeans and morphological processing, histogram equalization, ps

I ve made an example on how to perform FFT operation using FFTW in OpenCV. It simply loads an image, compute FFT & IFFT, then display the final result. The resulted image has no difference with the original, as it should.