NAME

       ppmtorgb3 - separate a PPM image into three PGMs

SYNOPSIS

       ppmtorgb3

       [ppmfile]

DESCRIPTION

       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.

OPTIONS

       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 ⟨index.html#commonoptions⟩ .)

SEE ALSO

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

AUTHOR

       Copyright (C) 1991 by Jef Poskanzer.

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/ppmtorgb3.html