Small convert FFT error

[markmarques]

using Windows XP and imagemagick 6.6.6-7


c:\convert -version
Version: ImageMagick 6.6.6-7 2010-12-22 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2011 ImageMagick Studio LLC
Features: OpenMP


I try to use this example from FFT I get :

c:\convert oldf069.jpg -fft ( -clone 0 -evaluate pow 0.9 ) -delete 0 +swap -ift oldf069aa.jpg

I get this error :
Magick: delegate library support not built-in `oldf069.jpg' (FFTW) @ warning/fourier.c/ForwardFourierTransformImage/627.
Magick: missing an image filename `oldf069aa.jpg' @ error/convert.c/ConvertImageCommand/2949.

Any ideas ?
Does the plain Q16 windows version have FFT enabled ?

[fmw42]

You have to install the FFTW delegate library before compiling IM. (Not sure how you do that on Windows as I am a Mac/unix users). It is also recommended for best quality that you compile in Q16 HDRI mode. But for some things Q16 may be adequate.

see viewtopic.php?f=4&t=14251#p56836

[markmarques]

By your answer it seems that Imagemagick "plain" Q16 binary release does not includes FFT operations nor HDRI ...

Would it be possible to activate the FFT math delegate without compiling alll ?

Would it be possible to allow ( put available) both HDRI and FFT enabled option in pre-compiled binaries in the main download site ?

Sometimes it could be a complete headache if the Visual enviroment is not properly installed ...

Nonetheless thanks for the fast reply ...

[fmw42]

That is an issue for the IM developer Magick. I cannot answer that one.

As far as I know, there is no IM binary release that is prebuilt with FFTW enabled nor with HDRI. Probably too many variations to support that for when only a few users use either.

[ghostrider]

You can download IM with FFTW and HDRI 32-bit windows binaries from here: http://blog.astrophotographytargets.com ... n-windows/