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

Latest stable version: 3.6.1 (2025/08/26)

Reference
Table of Contents  ▸  List of Commands  ▸  Colors  ▸  mix_rgb◀  match_rgb    |    oklab2rgb  ▶

mix_rgb

Arguments:

  • a11,a12,a13,a21,a22,a23,a31,a32,a33

Description:

Apply 3x3 specified matrix to RGB colors of selected images.

Default values:

a11=1, a12=a13=a21=0, a22=1, a23=a31=a32=0 and a33=1.

This command has a tutorial page.

Example of use:

image.jpg +mix_rgb 0,1,0,1,0,0,0,0,1

Command: image.jpg +mix_rgb 0,1,0,1,0,0,0,0,1
Command: image.jpg +mix_rgb 0,1,0,1,0,0,0,0,1
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.