FFT package update

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FFT package update

Post by seanburke1979 » 2008-01-31T07:29:27-07:00

Hello everyone. I'm sorry it has been so long since I updated the proposed FFT package. I have been studying for LSATs (I know, I know). Below are links for updated fft routines for IM.
> The full monty (90 MB):
ftp://depot.aecom.yu.edu/pub/Bo8x4IkfTz ... /imfft.tbz
> The lesser monty (12 MB - no documentation)
ftp://depot.aecom.yu.edu/pub/Bo8x4IkfTz ... no_doc.tbz

Fred has helped me develop a better demo - so here it is. You can build it from the trunk/ directory with <code>make demo</code>. The usage is pretty simple:
demo f my_file.png
(Performs a Fourier transform, outputs a tiff stack: R_magnitude, R_phase, G_mag, G_phase, B_mag, B_phase).
You can process the same stack after masking it, etc. with:
demo i my_file_F_Q16.tiff

Obviously, using the C functions is less restrictive, but this is an example of how to write code with the routines. As usual, post to the forum or email me directly with questions, comments.

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Re: FFT package update

Post by magick » 2008-02-16T13:57:33-07:00

See ftp://ftp.imagemagick.org/pub/ImageMagick/sandbox for the FFT routines and documentation. Also, see http://www.fmwconcepts.com/misc_tests/F ... index.html to see the results of running the FFT demos.

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Re: FFT package update

Post by fmw42 » 2008-02-18T19:06:25-07:00

You also need to first download and install the FFTW 3.1.2 delegate library.


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