ppmrelief Man page

ppmrelief General Commands Manual ppmrelief

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 Photography” by
Holzmann, equation 3.19. It’s a sort of edge-detection.

SEE ALSO

pgmbentley, pgmoil, ppm(5)

AUTHOR

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

11 January 1991 ppmrelief