pgmenhance
Edge-enhance a PGM image. See also:
pamedge
. More information: https://netpbm.sourceforge.net/doc/pgmenhance.html.
- Edge-enhance a PGM image:
pgmenhance {{path/to/image.pgm}} > {{path/to/output.pgm}}
- Specify the level of enhancement:
pgmenhance -{{1..9}} {{path/to/image.pgm}} > {{path/to/output.pgm}}