1D FFT of real-valued data

Posted by Herbie-3 on Apr 04, 2014; 2:54pm
URL: http://imagej.273.s1.nabble.com/Multi-Gauss-Fit-tp5007047p5007206.html

Dear experts,

from time to time, and in a certain case only recently, a fully "ImageJ
Macro"-recordable "ImageJ"-PlugIn appears to be needed that performs the
one-dimensional Fourier-Transformation. Meanwhile I've coded such a
PlugIn (free but not open source). Bundled with an introductory ReadMe,
it can be downloaded from

<http://www.gluender.de/Miscellanea/MiscTexts/UtilitiesText.html>

The PlugIn contains a classic implementation of the FFT-algorithm and as
such it requires a straight line selection (in an image ) of a length
measuring a power of two. It can either output the Power Spectrum, log10
Power Spectrum, Magnitude- & Phase-Spectrum, or Real- &
Imaginary-Spectrum. The spectra for positive frequencies are either
saved as Tab-delimited Text-files, displayed as "ImageJ"-Plots, or they
replace the pixel-values of the line selection.

A wrapper "ImageJ"-Macro for the "1D FFT"-processing of images or stacks
is available on request.

Best regards

Herbie

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