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PIXCMP(1)			    BRL-CAD			     PIXCMP(1)

NAME
       pixcmp -	compare	two pix	image files pixel by pixel

SYNOPSIS
       pixcmp [OPTIONS]	FILE1 [FILE2 [SKIP1 [SKIP2]]]

DESCRIPTION
       pixcmp is a program to compare two BRL-CAD pix image files pixel	by
       pixel. The following OPTIONS are	available:

       -l
	   Output pixel	numbers, counting from 1, and values for all pixels
	   that	differ.

       -b
	   Use bytes instead of	pixels for both	processing and output. With
	   this	option,	the -i SKIP values should be specified as bytes
	   instead of pixels.

       -i SKIP
	   Skip	the first SKIP pixels of input (for FILE1 and FILE2).

       -i SKIP1:SKIP2
	   Skip	the first SKIP1	pixels of FILE1	and the	first SKIP2 pixels of
	   FILE2.

       -s
	   Silent output. Only return an exit status.

       SKIP1 and SKIP2 are the number of pixels	to skip	in each	file.

       If FILE is `-` or missing, pixcmp reads from the	standard input.

RETURN VALUES
       The pixcmp utility returns 0 if there are no differences, 1 if there
       are only	off-by-one differences,	2 if there are off-by-many errors, 126
       if there	are file processing problems, and 127 if there are argument
       processing or usage errors.

EXAMPLES
       pixcmp -l file1 file2
	   The two files are compared pixel by pixel with each difference
	   printed instead of just the summary.

       pixdiff file1.pix file2.pix | pixcmp - file3.pix
	   The pixdiff tool compares the pixels	in file1.pix with those	in
	   file2.pix and then outputs a	resulting `diff` image which is	then
	   processed by	pixcmp as input	and compared against file3.pix,
	   reporting on	the differences.

SEE ALSO
       brlcad(1), pixdiff(1), pix(5), bw(5)

AUTHOR
       BRL-CAD Team

COPYRIGHT
       This software is	Copyright (c) 2007-2019	by the United States
       Government as represented by U.S. Army Research Laboratory.

BUG REPORTS
       Reports of bugs or problems should be submitted via electronic mail to
       devs@brlcad.org

BRL-CAD				  11/05/2021			     PIXCMP(1)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | SEE ALSO | AUTHOR | COPYRIGHT | BUG REPORTS

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