NAME

Image::Compare::AVG_THRESHOLD - Compare two images by the overall average color difference of their pixels.

OVERVIEW

See the docs for Image::Compare for details on how to use this module. Further documentation is meant for those modifying or subclassing this comparator. See the documentation in Image::Compare::Comparator for general information about making your own comparator subclasses.

METHODS

accumulate(\@pixel1, \@pixel2, $x, $y)

This method is called for each pixel in the two images to be compared. The difference between each pair of pictures is collected and stored for later use by get_result(). This method never short-circuits; when this comparator is used, all pixels are compared, every time.

$cmp->get_result()

Returns either the median or the arithmetic mean of the values collected by accumulate(), depending on the average type provided when this object was constructed.

AUTHOR

Copyright 2008 Avi Finkel <avi@finkel.org>

This package is free software and is provided "as is" without express or implied warranty. It may be used, redistributed and/or modified under the terms of the Perl Artistic License (see http://www.perl.com/perl/misc/Artistic.html)