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 prefix. 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¶
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 convenience.
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 ALSO¶
pnmcolormap(1),
pnmremap(1),
ppmquantall(1),
pnmdepth(1),
ppmdither(1),
ppmquant(1),
pnm(5)
AUTHOR¶
Written by Bryan Henderson