NAME
ppmrelief - run a Laplacian relief filter on a PPM image
SYNOPSIS
ppmrelief
[ppmfile]
DESCRIPTION
This program is part of Netpbm(1)
ppmrelief reads a PPM image as input, does a Laplacian relief filter, and writes a PPM image as output.
The Laplacian relief filter is described in Beyond Photography by Holzmann, equation 3.19. Its a sort of edge-detection.
SEE ALSO
pgmbentley(1) , pgmoil(1) , ppm(5)
AUTHOR
Copyright (C) 1990 by Wilson Bent (whb@hoh-2.att.com)