.TH ppmdim 1 "16 November 1993"
.IX ppmdim
.SH NAME
ppmdim - dim a portable pixmap down to total blackness
.SH SYNOPSIS
ppmdim
.I dimfactor
.RI [ ppmfile ]
.SH DESCRIPTION
Reads a portable pixmap as input. Diminishes its brightness by
the specified dimfactor down to total blackness.
The dimfactor may be in the range from 0.0 (total blackness,
deep night, nada, null, nothing) to 1.0 (original picture's
brightness).
.PP 
As
.I pnmgamma 
does not do the brightness correction in the way I
wanted it, this small program was written.
.PP
ppmdim is similar to
.I ppmbrighten
, but not exactly the same.
.SH SEE ALSO
ppm(5), ppmflash(1), pnmgamma(1), ppmbrighten(1)
.SH AUTHOR
Copyright (C) 1993 by Frank Neumann
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