G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing
GREYC CNRS ENSICAEN UNICAEN

A Full-Featured Open-Source Framework for Image Processing

Latest stable version: 3.4.3        Current pre-release: 3.5.0 (2024/12/18)

Reference

Table of Contents  ▸  List of Commands  ▸  Filtering  ▸  dct◀  curvature    |    deblur  ▶

dct

Arguments:

Description:

Compute the discrete cosine transform of selected images, optionally along the specified axes only.

Output images are always evenly sized, so this command may change the size of the selected images.

Default values:

(no arg)

See also:

idct.

This command has a tutorial page.

Example of use:

image.jpg +dct +idct[-1] abs[-2] +[-2] 1 log[-2]

Command: image.jpg +dct +idct[-1] abs[-2] +[-2] 1 log[-2]
Command: image.jpg +dct +idct[-1] abs[-2] +[-2] 1 log[-2]
Command: image.jpg +dct +idct[-1] abs[-2] +[-2] 1 log[-2]
G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing

G'MIC is an open-source software distributed under the CeCILL free software licenses (LGPL-like and/or
GPL-compatible). Copyrights (C) Since July 2008, David Tschumperlé - GREYC UMR CNRS 6072, Image Team.