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 con-
volution 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 ⟨index.html#commonoptions⟩ .)
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)
Generated by dwww version 1.15 on Sat Jun 29 02:35:20 CEST 2024.