fstopgm - convert a Usenix FaceSaver(tm) file into a PGM image

       Copyright (C) 1989 by Jef Poskanzer.

       This program is part of Netpbm(1).

       fstopgm reads a Usenix FaceSaver(tm) file as input and produces a PGM image as output.

       FaceSaver(tm)  files  sometimes  have  rectangular pixels.  While fstopgm won't re-scale them into square
       pixels for you, it will give you the precise pamscale command that will do the  job.   Because  of  this,
       reading a FaceSaver(tm) image is a two-step process.  First you do:

         fstopgm > /dev/null

       This will tell you whether you need to use pamscale.

       Then use one of the following pipelines:
         fstopgm | pnmnorm
         fstopgm | pamscale -whatever | pnmnorm

       To go to PBM, you want something more like one of these:
         fstopgm | pamenlarge 3 | pnmnorm | pamditherbw
         fstopgm | pamenlarge 3 | pamscale <whatever> | pnmnorm | pamditherbw

       You  want to enlarge when going to a bitmap because otherwise you lose information; but enlarging by more
       than 3 does not look good.

       FaceSaver is a registered trademark of Metron Computerware Ltd. of Oakland, CA.

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

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

netpbm documentation                               06 April 89                            FstopgmUserManual(1)

       fstopgm - convert a Usenix FaceSaver(tm) file into a PGM image

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

pgmtofs(1), pgm(1), pnmnorm(1), pamenlarge(1), pamscale(1), pamditherbw(1)

fstopgm [fsfile]