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Where is FFT support

Posted: 2014-12-18T13:36:06-07:00
by Mario69
Hi !
I have just deinstalled IM v 6.6.something and installed newest IM 6.9.0 binaries for windows 64 (16 bit depth) with a hope that support for FFT would be there. But nothing. convert -version showed that fft support is not there. On the IM site they claim that fft support is included in IM since 6.5.4-3. So where is it ?
Mario

Re: Where is FFT support

Posted: 2014-12-18T14:02:21-07:00
by fmw42
On unix machines, it requires the FFTW delegate library. See http://www.imagemagick.org/script/comma ... ns.php#fft

I am not sure how that is installed for Windows or if it is supposed to be in the binary. One of the Windows users or IM developers will have to comment, since I do not use Windows.

Re: Where is FFT support

Posted: 2014-12-18T14:06:49-07:00
by snibgo
It isn't in the pre-build Windows binary.

Re: Where is FFT support

Posted: 2014-12-18T15:44:50-07:00
by dlemstra
FFTW uses the GPL license and that is why it is not included in the Windows build.

Re: Where is FFT support

Posted: 2014-12-25T15:21:14-07:00
by Mario69
OK, thanks! In the meantime I found a private site http://blog.astrophotographytargets.com ... n-windows/ where a recent enough version of IM is statically compiled with FFTW support for windows.
Best,
Mario

Re: Where is FFT support

Posted: 2014-12-25T16:33:18-07:00
by fmw42
For application tutorial, see http://www.fmwconcepts.com/imagemagick/ ... urier.html (though a bit old and predates the IM -fx jinc function, so the jinc had to be scripted from a math formula)

Re: Where is FFT support

Posted: 2014-12-26T11:48:24-07:00
by fmw42
Installation of FFTW on Windows and Ubuntu can be found at viewtopic.php?f=4&t=14251