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: 3.5.5        Current pre-release: 3.6.0 (2025/07/24)

Reference

Table of Contents  ▸  List of Commands  ▸  Colors  ▸  rgb2cmyk◀  rgb2cmy    |    rgb2hcy  ▶

rgb2cmyk

No arguments

Description:

Convert color representation of selected images from RGB to CMYK.

Examples of use:

• Example #1

image.jpg rgb2cmyk split c

Command: image.jpg rgb2cmyk split c
Command: image.jpg rgb2cmyk split c
Command: image.jpg rgb2cmyk split c
Command: image.jpg rgb2cmyk split c

• Example #2

image.jpg rgb2cmyk split c fill[3] 0 append c cmyk2rgb

Command: image.jpg rgb2cmyk split c fill[3] 0 append c cmyk2rgb
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.