ppmrelief

Updated: 11 January 1991
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NAME

ppmrelief - run a Laplacian relief filter on a PPM image  

SYNOPSIS

ppmrelief [ppmfile]  

DESCRIPTION

This program is part of Netpbm.

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, pgmoil, ppm  

AUTHOR

Copyright (C) 1990 by Wilson Bent (whb@hoh-2.att.com)
 

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