run a Laplacian relief filter on a portable pixmap
see also :
pgmbentley - pgmoil
add an example, a script, a trick and tips
no example yet ...
... Feel free to add your own example above to help other Linux-lovers !
portable pixmap as input. Does a Laplacian relief filter,
and writes a portable pixmap as output.
relief filter is described in "Beyond Photography"
by Holzmann, equation 3.19. It’s a sort of
pgmoil , ppm
1990 by Wilson Bent (email@example.com)