pnmquant

   Updated: 22 October 2003
   Table Of Contents

NAME

   pnmquant  - quantize the colors in a Netpbm image to a smaller
set

SYNOPSIS

   pnmquant	[-center|-meancolor|-meanpixel]	     [-floyd|-fs]
[-nofloyd|-nofs]
   [-spreadbrightness|-spreadluminosity] ncolors [pnmfile]

   All	options	 can be abbreviated to their shortest unique pre-
fix. You may use
   two hyphens instead of one to designate an option. You may use
either white
   space or equals signs between an option name and its value.

DESCRIPTION

   This program is part of Netpbm.

   pnmquant reads a PNM image as input. It chooses ncolors colors
to best
   represent the image, maps the existing colors to the new ones,
and writes a
   PNM image as output.

   This	 program  is simply a combination of pnmcolormap and pnm-
remap, where the
   colors of the input are remapped using a color  map	which  is
generated from
   the colors in that same input. The options have the same mean-
ing as in those
   programs. See their documentation to understand pnmquant.

   It is much faster to call pnmcolormap  and  pnmremap	 directly
than to run
   pnmquant.  You  save	 the overhead of the Perl interpreter and
creating two
   extra processes. pnmquant is just a convenience.

   pnmquant did not exist before Netpbm 9.21 (January 2001).  Be-
fore that,
   ppmquant  did the same thing, but only on PPM images. ppmquant
continues to
   exist, but is only a front end (for name compatibility) to pn-
mquant.

SEE ALSO

   pnmcolormap,	 pnmremap,  ppmquantall, pnmdepth, ppmdither, pp-
mquant, pnm
     _________________________________________________________________



Table Of Contents

     * NAME
     * SYNOPSIS
     * DESCRIPTION
     * SEE ALSO

UNIX/Linux commands referenced on this page:

1. as
2. pnmcolormap
3. ppmquant
4. pnmremap
5. ppmquantall
6. pnmdepth
7. ppmdither