ppmrelief (1)
run a Laplacian relief filter on a portable pixmap
SYNOPSIS
DESCRIPTION
Reads a portable pixmap as input.
Does a Laplacian relief filter, and writes a portable pixmap as output.
"Laplacian relief"
The Laplacian relief filter is described in "Beyond Photography" by Holzmann,
equation 3.19.
It's a sort of edge-detection.
"edge detection"
SEE ALSO
AUTHOR
Copyright (C) 1990 by Wilson Bent (whb@hoh-2.att.com)
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