ppmrelief

 

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 ppmrelief(1)                                         ppmrelief(1)
 
 
 
NAME
        ppmrelief  -  run  a Laplacian relief filter on a portable
        pixmap
 
SYNOPSIS
        ppmrelief [ppmfile]
 
DESCRIPTION
        Reads a portable pixmap as input.  Does a Laplacian relief
        filter, and writes a portable pixmap as output.
 
        The  Laplacian  relief filter is described in "Beyond Pho­
        tography" 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)
 
 
 
                          11 January 1991             ppmrelief(1)

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