Man Pages

fstopgm(1) - phpMan fstopgm(1) - phpMan

Command: man perldoc info search(apropos)  

Fstopgm User Manual(0)                                  Fstopgm User Manual(0)

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

       fstopgm [fsfile]

       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  Face-
       Saver(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 | pgmnorm
         fstopgm | pamscale -whatever | pgmnorm

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

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

       Copyright (C) 1989 by Jef Poskanzer.

netpbm documentation              06 April 89           Fstopgm User Manual(0)