I have a 2048x2048 image and as part of processing it, I am trying to identify frequencies through spectrogram but I think it works only per row or column of the image and not on a batch of rows. Am I wrong? can someone help with implementing the Spectrogram function on an image? Thanks in advance.
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Fast Fourier Transforms to create 2-D spectra are available as part of the [SciPy FFT package](https://docs.scipy.org/doc/scipy/reference/fftpack.html) – John1024 Nov 26 '17 at 08:08
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@John1024Thank you for your comment. I know the function 'fftn' but I am trying to find a matlab function for the spectrogram (for image) instead of writing it from scratch. – Gal Shai Nov 26 '17 at 08:40
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@John1024 Thank you for your comment. I know the function 'fftn' but I am trying to find a matlab function for the spectrogram (for image) instead of writing it from scratch. – Gal Shai Nov 26 '17 at 08:42
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I am not a Matlab user but have you looked at [MathWorks 2-D fast Fourier transform](https://www.mathworks.com/help/matlab/ref/fft2.html?requestedDomain=www.mathworks.com)? – John1024 Nov 26 '17 at 21:08