.TH GMERLIN_SSIM 1 "January 2011" Gmerlin "User Manuals"
.SH NAME
gmerlin_ssim
\-
compare two images
.SH SYNOPSIS
.B gmerlin_ssim <image1> <image2> [<output_image>]

.SH DESCRIPTION
.B 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:
.PP
.B http://www.ece.uwaterloo.ca/~z70wang/research/ssim/

.B gmerlin_ssim
is part of the Gmerlin suite of media applications.