ppmrelief



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(1)



AUTHOR

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



netpbm documentation            11 January 1991       Ppmrelief User Manual(0)

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