Re: FFT of image stack

Posted by Wayne Rasband on Dec 05, 2009; 2:38pm
URL: http://imagej.273.s1.nabble.com/FFT-of-image-stack-tp3690205p3690206.html

On Dec 5, 2009, at 8:23 AM, Henny Zandbergen wrote:

> Is there a plugin that can
> 1. calculate the FFT of each frame of a movie and
> 2. create of this stack of FFT's a new movie?   (preferable only
> amplitude (so only real part))
> henny

Here is a macro that creates an FFT power spectrum movie.

    setBatchMode(true);
    stack = getImageID;
    newImage("FFT Movie of "+getTitle, "8-bit", getWidth, getHeight,  
nSlices);
    movie = getImageID;
    for (i=1; i<=nSlices; i++) {
       showProgress(i, nSlices);
       selectImage(stack);
       setSlice(i);
       run("FFT");
       run("Copy");
       close;
       selectImage(movie);
       setSlice(i);
       run("Paste");
    }
    setBatchMode(false);

-wayne