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

Reference

Table of Contents ▸ List of Commands ▸ Colors ▸ colormap

◀ colorblind | compose_channels ▶

colormap

Arguments:

nb_levels>=0,_method={ 0:Median-cut | 1:K-means },_sort_vectors

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:

<a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +colormap[0] 4 +colormap[0] 8 +colormap[0] 16

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +colormap[0] 4 +colormap[0] 8 +colormap[0] 16

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +colormap[0] 4 +colormap[0] 8 +colormap[0] 16

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +colormap[0] 4 +colormap[0] 8 +colormap[0] 16

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +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.