ppmtorgb3 - separate a PPM image into three PGMs

       Copyright (C) 1991 by Jef Poskanzer.

       This program is part of Netpbm(1).

       ppmtorgb3  reads a PPM image as input and writes three PGM images as output, one each for red, green, and
       blue.

       ppmtorgb3 constructs the output filenames by taking the input filename, stripping off any extension,  and
       appending  .red, .grn, .blu.  For example, separating lenna.ppm would result in lenna.red, lenna.grn, and
       lenna.blu.  If the input comes from stdin, the names are noname.red, noname.grn, and noname.blu.

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

              http://netpbm.sourceforge.net/doc/ppmtorgb3.html

netpbm documentation                             10 January 1991                        Ppmtorgb3UserManual(1)

       ppmtorgb3 - separate a PPM image into three PGMs

       There are no command line options defined specifically for  ppmtorgb3,  but  it  recognizes  the  options
       common to all programs based on libnetpbm (See  Common Options .)

rgb3toppm(1), pamchannel(1), ppmtopgm(1), pgmtoppm(1), ppm(1), pgm(1)

ppmtorgb3

       [ppmfile]