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.TH DIFFIMG 1 "Jan 31, 2010"
.SH NAME
diffimg \- Calculates intersection between two images
.SH SYNOPSIS
.B diffimg
.RI image1
.RI image2
.RI [ outimage ]
.SH DESCRIPTION
.PP
\fBdiffimg\fP generates an image where each pixel is the difference between the corresponding pixel
in each of the two source images.  Thus, if the source images are the same the resulting image will
be black, otherwise it will have regions of non-black where the images differ.
.PP 
Currently supports: .png, .gif, .jpg, and .ps by using ghostscript
.SH AUTHOR
diffimg was written by John Ellson <ellson@research.att.com>
.PP
This manual page was written by David Claughton <dave@eclecticdave.com>,
for the Debian project (but may be used by others).