PSIDTOPGM

NAME

      psidtopgm - convert PostScript "image" data into a portable graymap

SYNOPSIS

      psidtopgm <width> <height> <bits/sample> [imagedata]

DESCRIPTION

      Reads the "image" data from a PostScript file as input.  Produces a
      portable graymap as output.
      This is a very simple and limited program, and is here only because so
      many people have asked for it.  To use it you have to manually extract
      the readhexstring data portion from your PostScript file, and then
      give the width, height, and bits/sample on the command line.  Before
      you attempt this, you should at least read the description of the
      "image" operator in the PostScript Language Reference Manual.
      It would probably not be too hard to write a script that uses this
      filter to read a specific variety of PostScript image, but the
      variation is too great to make a general-purpose reader.  Unless, of
      course, you want to write a full-fledged PostScript interpreter...

SEE ALSO

      pgmtops(1), pgm(5)

AUTHOR

      Copyright (C) 1989 by Jef Poskanzer.
      Permission to use, copy, modify, and distribute this software and its
      documentation for any purpose and without fee is hereby granted,
      provided that the above copyright notice appear in all copies and that
      both that copyright notice and this permission notice appear in
      supporting documentation.  This software is provided "as is" without
      express or implied warranty.