Manual: ppmrelief

Ppmrelief User Manual(1)			   General Commands Manual			    Ppmrelief User Manual(1)

NAME
       ppmrelief - compute a relief of a PPM image

SYNOPSIS
       ppmrelief

       [ppmfile]

DESCRIPTION
       This program is part of Netpbm(1).

       ppmrelief reads a PPM image as input, and writes a relief of that image as a PPM image as output.

       The  relief  process  is described in "Beyond Photography" by Holzmann, equation 3.19.  It's a sort of edge-detection
       and is essentially a convolution with this matrix:

	   |  1	 0  0 |
	   |  0	 0  0 |
	   |  0	 0 -1 |

OPTIONS
       There are no command line options defined specifically for ppmrelief, but it recognizes the  options  common  to	 all
       programs based on libnetpbm (See	 Common Options .)

SEE ALSO
       pamshadedrelief(1), pgmbentley(1), pgmoil(1), ppm(1)

AUTHOR
       Copyright (C) 1990 by Wilson Bent (whb@hoh-2.att.com)

DOCUMENT SOURCE
       This manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master documentation is at

	      http://netpbm.sourceforge.net/doc/ppmrelief.html

netpbm documentation				       02 August 2014				    Ppmrelief User Manual(1)