Return the covariance matrix of the vector-valued colors in the latest of the selected images
(for arbitrary number of channels).
is used as a variable name that takes the value of the average vector-value.
G'MIC is an open-source software distributed under the
CeCILL free software licenses (LGPL-like and/or
Copyrights (C) Since July 2008,
David Tschumperlé - GREYC UMR CNRS 6072, Image Team.