ppmdim man page

ppmdim — dim a PPM image


ppmdim dimfactor [ppmfile]


This program is part of Netpbm(1).

This program is largely obsoleted by the more general pamfunc(1) (use the -multiplier option).  ppmdim remains for backward compatibility and also because its use of integer arithmetic may make it faster.

ppmdim reads a PPM image input and diminishes its brightness by the specified dimfactor.  The dimfactor may be in the range from 0.0 (total blackness, deep night, nada, null, nothing) to 1.0 (original picture's brightness).

See Also

ppm(1), pamfunc(1),


Copyright (C) 1993 by Frank Neumann

Document Source

This manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master documentation is at


Referenced By

pamarith(1), pamfunc(1), pnmnorm(1), ppmbrighten(1), ppmntsc(1), ppmshift(1), ppmtv(1).

June 2002 netpbm documentation