pnmquant(1)pnmquant(1)NAMEpnmquant - quantize the colors in a Netpbm image to a
smaller set
SYNOPSISpnmquant [-center|-meancolor|-meanpixel] [-floyd|-fs]
[-nofloyd|-nofs] [-spreadbrightness|-spreadluminosity]
ncolors [pnmfile]
All options can be abbreviated to their shortest unique
prefix. You may use two hyphens instead of one to desig
nate an option. You may use either white space or equals
signs between an option name and its value.
DESCRIPTION
Reads a PNM image as input. 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
pnmremap, 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 meaning as in those
programs. See their documentation to understand pnmquant.
It is much faster to call pnmcolormap and pnmremap
directly than to run pnmquant. pnmquant is just a conve
nience.
ppmquant is an older program which does the same thing as
pnmquant, but on only PPM images. It is, however, faster
than either pnmquant or ppmcolormap/pnmremap.
SEE ALSOpnmcolormap(1), pnmremap(1), ppmquantall(1), pnmdepth(1),
ppmdither(1), ppmquant(1), pnm(5)
20 January 2002 pnmquant(1)
