FFT

FFT

Purpose

This utility allows you to compute the Fourier Transform of an image, volume or set of images and volumes. The output is a complex file, which cannot be visualized by any program. Use Visualize_FFT to watch the Fourier Transform.

Usage

$ fft -i ...

Parameters

• __OR__ Fourier Transform a single file.

• __OR__ If no output file is given, then the input one is rewritten

• `` Fourier Transform a bunch of files

• __OR__ If no output extension neither root are given, then the input ones are rewritten

Examples and notes

Transforming a single image

$ FFT -i g0ta00001.xmp -o g0ta00001.fft

Transforming a sel file, a new extension is given to output images, ie, if input images are of the like ofg0ta0001.xmp, then the output ones will beg0ta0001.fft

$ rotate -i g0ta.sel -oext fft

--Main.AlfredoSolano - 17 Jan 2007