Posted by
ctrueden on
Aug 07, 2015; 8:40pm
URL: http://imagej.273.s1.nabble.com/FFT-and-Inverse-FFT-problem-for-an-Electron-Microscope-Image-tp5013915p5013956.html
Hi everyone,
Regarding FFT and IFFT operations, I just wanted to mention that ImageJ Ops
(distributed as part of ImageJ2!) does have these operations [1, 2, 3, 4,
5], driven by the powerful ImgLib2 library [6]. And very soon to be using
JTransforms [7] as mentioned by Dimiter (currently it uses Mines JTK [8,
9]).
So for anyone considering reinventing this wheel: please consider
contributing to Ops rather that starting a new and instantly obsolete
plugin. ;-)
Regards,
Curtis
[1]
https://github.com/imagej/imagej-ops/tree/imagej-ops-0.16.0/src/main/java/net/imagej/ops/filter/fft[2]
https://github.com/imagej/imagej-ops/tree/imagej-ops-0.16.0/src/main/java/net/imagej/ops/filter/fftSize[3]
https://github.com/imagej/imagej-ops/tree/imagej-ops-0.16.0/src/main/java/net/imagej/ops/filter/ifft[4]
https://github.com/imagej/imagej-ops/blob/imagej-ops-0.16.0/src/main/java/net/imagej/ops/filter/FilterNamespace.java#L569-L702[5]
https://github.com/imagej/imagej-ops/blob/imagej-ops-0.16.0/src/main/java/net/imagej/ops/filter/FilterNamespace.java#L879-L910[6]
https://github.com/imglib/imglib2-algorithm-fft[7]
https://github.com/imglib/imglib2-algorithm-fft/pull/3[8]
https://github.com/imglib/imglib2/issues/61[9]
https://github.com/imglib/imglib2/issues/38On Fri, Aug 7, 2015 at 9:05 AM, Rosenberg, Mark F <
[hidden email]> wrote:
> Dear Dimiter
> Thank you for your feedback and suggestions too.
> Best Regards,
> Mark
> > On 7 Aug 2015, at 11:12, Dimiter Prodanov <
[hidden email]> wrote:
> >
> > Dear all,
> >
> > Handing of FFTs (and complex numbers) is a definite weakness of ImageJ.
> > Actually ImageJ implements only the Discrete Hartley transform in order
> to
> > avoid as much as possible use of complex numbers.
> > May be this was a reasonable design choice 15 years ago when ImageJ was
> > hardly more than an applet displaying an image but now I think it will
> make
> > much sense to reconsider this.
> >
> > To put it simply without canonical state of the art FFT/IFFT routine
> > ImageJ is not suitable for serious work in linear filtering/signal
> > processing.
> >
> > It will be nice to expose FFTs using for example JTransforms library
> >
https://sites.google.com/site/piotrwendykier/software/jtransforms> >
> > I think that the licenses are compatible.
> >
> > best regards,
> >
> > Dimiter Prodanov
> >
> > --
> > ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>
> --
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