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 Post subject: fourier transform 0.42 compiled for win32 bit
PostPosted: Wed Jun 27, 2012 1:09 am  (#1) 
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Location: "Looking for my eraser" =P
More information here
http://people.via.ecp.fr/~remi/soft/gim ... p3#fourier
and here
http://registry.gimp.org/node/19596#comment-14794

zip attached includes source (c file) and compiled binary and dll file.
Place both the binary and dll file in your plugins folder the plugin will be located at
Filters>Generic>FFT Forward and FFT Inverse

If you mouse over FFT Forward you get an explanation of what the plugin does for removing moire patterns on images scanned from books.

Image
Attachment:
Fourier-0.4.zip [779.19 KiB]
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For instance i used it to create more texture in my ConformalMap Image.
Before running FFT Forward and FFT Inverse.
Image

After running FFT Forward and FFT Inverse on the same image.
Image

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 Post subject: Re: fourier transform 0.42 compiled for win32 bit
PostPosted: Wed Jun 27, 2012 4:52 am  (#2) 
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Worth pointing out that G'mic has an excellent (although a bit odd to look at) implementation.

FFT is often necessary for scanned images, I did this quick howto for someone.

http://youtu.be/Ig3Zpfvk69k 2.5 minutes

and a longer boring introduction to the process

http://www.youtube.com/watch?v=30XaCfM2QGg 8 minutes.

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 Post subject: Re: fourier transform 0.42 compiled for win32 bit
PostPosted: Wed Jun 27, 2012 11:32 am  (#3) 
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If your into video the YUV GIMP Plugin at the same link might be of interest. I'm not sure how how Gimp handles this?

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