pnmquantall(1) - phpMan

Pnmquantall User Manual(0)                                             Pnmquantall User Manual(0)



NAME
       pnmquantall  -  run  Pnmquant on a bunch of files all at once, so they share a common col-
       ormap


SYNOPSIS
       pnmquantall

       [-ext extension] ncolors netpbm_file...

       Note that the usual syntax rules for Netpbm programs don't apply  to  this  program.   For
       example, you can't abbreviate -ext and you can't put it anywhere on the line you want.



DESCRIPTION
       This program is part of Netpbm(1).

       pnmquantall  takes  a bunch of Netpbm image files as input, chooses ncolors colors to best
       represent all of the images, maps the existing colors to the new ones, and overwrites  the
       input files with the new quantized versions.

       If  you  don't  want to overwrite your input files, use the -ext option.  The output files
       are then named the same as the input files, plus a period and the extension text you spec-
       ify.

       The  purpose  is  this:  Let's say you've got a dozen PPMs that you want to display on the
       screen all at the same time.  Your screen can only display 256 different colors,  but  the
       PPMs have a total of a thousand or so different colors.  For a single image you solve this
       problem with pnmquant; pnmquantall solves it for multiple images.

       Note that another approach to this problem is to pre-select a set of colors and  then  use
       pnmremap to separately quantize each PPM to that set.)

       This  is a rather simple program that runs pnmcolormap and pnmremap.  If you are consider-
       ing using it in a program of any sophistication, you should probably just run  those  pro-
       grams  directly.  Even if you are typing it, you may want to do the steps manually because
       it gives you access to the various options of pnmcolormap and pnmremap for doing the quan-
       tization differently.



SEE ALSO
       pnmquant(1), pnmremap(1), pnmcolormap(1), pnm(1)

DOCUMENT SOURCE
       This  manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master
       documentation is at

              http://netpbm.sourceforge.net/doc/pnmquantall.html

netpbm documentation                      05 March 2012                Pnmquantall User Manual(0)

Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2024-04-27 01:21 @18.119.133.228 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)