SYNOPSIS
ppmdither

[-dim power]

[-red shades]

[-green shades]

[-blue shades]

[ppmfile]


DESCRIPTION
This program is part of Netpbm.

ppmdither reads a PPM image as input, and applies dithering to it to
reduce the number of colors used down to the specified number of
shades for each primary. The default number of shades is red=5,
green=9, blue=5, for a total of 225 colors. To convert the image to a
binary rgb format suitable for color printers, use -red 2 -green 2
-blue 2.

You can do another kind of dither -- Floyd-Steinberg -- with pnmquant
or pnmremap.


OPTIONS
-dim power


-red shades


-green shades


-blue shades



SEE ALSO
pamdepth, pnmquant, pnmremap, ppm


AUTHOR
Copyright (C) 1991 by Christos Zoulas.



netpbm documentation 14 July 1991 Ppmdither User Manual(0)