---
name: "gpiv_fft"
section: "1"
platform: "linux"
package: "gpivtools"
version: "0.6.0-3.1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/gpiv_fft"
---

# gpiv\_fft(1)

Fast Fourier Transformation of image .

## NAME

gpiv\_fft - Fast Fourier Transformation of image .

## SYNOPSIS

**gpiv\_fft** \[**-h** \| **--help**\]  \[**-p** \| **--print**\]  \[**-v** \| **--version**\]  \[*filename*\]  \< *stdin* \> *stdout*

## DESCRIPTION

**gpiv\_fft** *converts an image to its Fourier Transform using FFT.*

*The parameters read from the configuration resources (containing the* *key* **GPIV\_IMGPROC**) may be overruled by the command line options, as explained below.

## Options

- **-h** \| **--help**

  On-line help

- **-v** \| **--version**

  Print version information on standard output, then exit successfully.

- *filename*

  Input image filename. Overrides *stdin* and *stdout* with the full *filename* of the image. Output will be written to *filename***.png**. Parameters are stored in *filename***.par** and may be used for future use by including them in *./gpivrc*. If *stdin* and *stdout* are used, the input is expected to be a PNG formatted image.

- gpivtools

  ## SEE ALSO

## AUTHOR

Gerber Van der Graaf