ppmtorgb3(1)

NAME

   ppmtorgb3 - separate a portable pixmap into three portable graymaps

SYNOPSIS

   ppmtorgb3 [ppmfile]

DESCRIPTION

   Reads  a  portable  pixmap as input.  Writes three portable graymaps as
   output, one each for red, green, and blue.

   The output filenames are constructed  by  taking  the  input  filename,
   stripping  off any extension, and appending ".red", ".grn", and ".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.

SEE ALSO

   rgb3toppm(1), ppmtopgm(1), pgmtoppm(1), ppm(5), pgm(5)

AUTHOR

   Copyright (C) 1991 by Jef Poskanzer.

                            10 January 1991                   ppmtorgb3(1)

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Free and Open Source Software