=encoding utf-8

=head1 NAME

PDL::Graphics::ColorDistance

=head1 VERSION

0.0.1

=head1 DESCRIPTION

This is a PDL implementation of the CIEDE2000 color difference formula.

=head1 SYNOPSIS

    use PDL::LiteF;
    use PDL::Graphics::ColorDistance;

    my $lab1 = pdl([ 50, 2.6772, -79.7751 ]);
    my $lab2 = pdl([ 50, 0,      -82.7485 ]);
    my $delta_e = delta_e_2000($lab1, $lab2);

    # $delta_e == 2.0425;

=head1 FUNCTIONS



=head2 delta_e_2000

=for sig

  Signature: (double lab1(c=3); double lab2(c=3); double [o]delta_e())


=for ref

Calculates the ΔE*00 (delta e, color distance) between two Lab colors

=for usage

Usage:

    my $delta_e = delta_e_2000($lab1, $lab2);



=for bad


If C<delta_e_2000> encounters a bad value in any of the L, a, or b values the input values will be marked as bad



=head1 DEVELOPMENT

This module is being developed via a git repository publicly available at http://github.com/ewaters/perl-PDL-Graphics-ColorDistance.

=head1 COPYRIGHT

Copyright (c) 2013 Eric Waters and Shutterstock Images (http://shutterstock.com).  All rights reserved.  This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

The full text of the license can be found in the LICENSE file included with this module.

=head1 AUTHOR

Eric Waters <ewaters@gmail.com>

