function error = GetError(image1, image2)
% function error = GetError(image1Red, image1Green, image1Blue, image2Red, image2Green, image2Blue).  
% This function gets the difference between the two images... Squared sum
% of errors.
% Author : Sasakthi Abeysinghe, Timothy Simpson
% Date   : 04/05/2006

error = sum(power(double(image1(:) - image2(:)),2));