OpenCV Q&A Forum - RSS feedhttp://answers.opencv.org/questions/OpenCV answersenCopyright <a href="http://www.opencv.org">OpenCV foundation</a>, 2012-2018.Wed, 08 Aug 2018 05:04:38 -0500How can I get the FFT matrix?http://answers.opencv.org/question/197069/how-can-i-get-the-fft-matrix/ I have an image with index data [-(N-1)/2, .., 0,...,(N-1)/2] x [-(N-1)/2, .., 0, ..., (N-1)/2] and I need for a special calculation only the DFT, rather the FFT, matrix F, such that X = Fx, where X is the frequency sequence and x the real domain sequence.
Is there any routine that I can use that calculates the FFT matrix??Wed, 08 Aug 2018 03:49:01 -0500http://answers.opencv.org/question/197069/how-can-i-get-the-fft-matrix/Comment by LBerger for <p>I have an image with index data [-(N-1)/2, .., 0,...,(N-1)/2] x [-(N-1)/2, .., 0, ..., (N-1)/2] and I need for a special calculation only the DFT, rather the FFT, matrix F, such that X = Fx, where X is the frequency sequence and x the real domain sequence. </p>
<p>Is there any routine that I can use that calculates the FFT matrix??</p>
http://answers.opencv.org/question/197069/how-can-i-get-the-fft-matrix/?comment=197071#post-id-197071tutorial : https://docs.opencv.org/trunk/de/dbc/tutorial_py_fourier_transform.html or https://docs.opencv.org/master/d8/d01/tutorial_discrete_fourier_transform.htmlWed, 08 Aug 2018 05:04:38 -0500http://answers.opencv.org/question/197069/how-can-i-get-the-fft-matrix/?comment=197071#post-id-197071