NAME

       gmerlin_ssim - compare two images

SYNOPSIS

       gmerlin_ssim <image1> <image2> [<output_image>]

DESCRIPTION

       gmerlin_ssim  will  calculate  the structural similarity between <image1> and <image2> and
       store the resulting image into <output_image>.

       The input images should be of the same dimension and format.

       The SSIM algorithm  is  taken  from  the  paper  "Image  Quality  Assessment:  From  Error
       Visibility to Structural Similarity" by Z. Want et. al.  published in IEEE Transactions on
       image processing, VOL. 13, NO. 4, APRIL 2004. Homepage of the author:

       http://www.ece.uwaterloo.ca/~z70wang/research/ssim/

       gmerlin_ssim is part of the Gmerlin suite of media applications.