debian man page for perceptualdiff

PERCEPTUALDIFF(1)					      General Commands Manual						 PERCEPTUALDIFF(1)

NAME
       perceptualdiff - compare images using a perceptually based image metric

SYNOPSIS
       perceptualdiff  <image1> <image2> [options]

DESCRIPTION
       This manual page documents briefly the perceptualdiff command.

       perceptualdiff  is a program that compares image1.tif and image2.tif using a perceptually based image metric. Note: Input files can also be
       in the PNG format

OPTIONS
       A summary of options is included below.

       -verbose
	      Turns on verbose mode

       -fov <deg>
	      Field of view in degrees (0.1 to 89.9)

       -threshold <p>
	      #pixels p below which differences are ignored

       -gamma <g>
	      Value to convert rgb into linear space (default 2.2)

       -luminance <l>
	       White luminance (default 100.0 cdm^-2)

       -output <o.ppm>
	       Write difference to the file o.ppm

AUTHOR
       perceptualdiff was written by Yangli Hector Yee <yeehector@users.sourceforge.net>

       This manual page was written by Jeff Breidenbach <jab@debian.org>, for the Debian project (but may be used by others).

								September 28, 2007						 PERCEPTUALDIFF(1)