Ppmrelief User Manual(0)                              Ppmrelief User Manual(0)



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.  It's 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)

netpbm documentation            11 January 1991       Ppmrelief User Manual(0)