ppmrelief man page on BSDi

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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			1

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