ppmdim (1)
dim a portable pixmap down to total blackness
SYNOPSIS
ppmdim
dimfactor
[ ppmfile ]
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).
As
pnmgamma
does not do the brightness correction in the way I
wanted it, this small program was written.
ppmdim is similar to
ppmbrighten
, but not exactly the same.
SEE ALSO
AUTHOR
Copyright (C) 1993 by Frank Neumann
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