Re: FFT implementation in ImageJ

Posted by Burger Wilhelm on
URL: http://imagej.273.s1.nabble.com/FFT-implementation-in-ImageJ-tp5008239p5008324.html

Hello Miriam,

have you considered the FFT implementation in Apache Commons Math?:
http://commons.apache.org/proper/commons-math/apidocs/org/apache/commons/math3/transform/FastFourierTransformer.html

Works "out of the box" and results are correct.

--Wilhelm Burger

________________________________________
From: ImageJ Interest Group [[hidden email]] On Behalf Of Student1 [[hidden email]]
Sent: Wednesday, June 18, 2014 23:58
To: [hidden email]
Subject: Re: FFT implementation in ImageJ

Hi,

First of all thanks for everybody’s input. I implemented an FFT algorithm by basically looking it up online and I am tracing through the calculation by hand to get a better understanding of the FFT. The FFT I implemented does not produce the image that should be produced by ImageJ. I was wondering if anyone can see where I am going wrong with my calculation. My work is here:

http://stackoverflow.com/questions/24291896/fft-image-is-not-the-same-as-the-fft-image-produced-in-imagej

Thanks.

Mariam Dost
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