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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: