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: 3.1.4

Reference

Table of Contents  ▸  List of Commands  ▸  Colors  ▸  colormap◀  colorblind    |    compose_channels  ▶

colormap

Arguments:

Description:

Estimate best-fitting colormap with nb_colors entries, to index selected images.

Set nb_levels==0 to extract all existing colors of an image.
sort_vectors can be { 0=unsorted | 1=by increasing norm | 2=by decreasing occurrence }.

Default values:

method=1 and sort_vectors=1.

This command has a tutorial page.

Example of use:

$ gmic image.jpg +colormap[0] 4 +colormap[0] 8 +colormap[0] 16

Command: image.jpg +colormap[0] 4 +colormap[0] 8 +colormap[0] 16
Command: image.jpg +colormap[0] 4 +colormap[0] 8 +colormap[0] 16
Command: image.jpg +colormap[0] 4 +colormap[0] 8 +colormap[0] 16
Command: image.jpg +colormap[0] 4 +colormap[0] 8 +colormap[0] 16
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.