Bentleyize a portable graymap
see also :
pgmoil - ppmrelief
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 graymap as input. Performs The Bentley Effect, and
writes a portable graymap as output.
Effect is described in "Beyond Photography" by
Holzmann, chapter 4, photo 4. It’s a vertical smearing
based on brightness.
ppmrelief , pgm
1990 by Wilson Bent (email@example.com)