Fstopgm User Manual

Section: Misc. Reference Manual Pages (0)
Updated: 06 April 89
Index Return to Main Contents

 

NAME

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

 

SYNOPSIS

fstopgm [fsfile]

 

DESCRIPTION

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 | 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.

 

SEE ALSO

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

AUTHOR

Copyright (C) 1989 by Jef Poskanzer.


 

Index

NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
AUTHOR

linux.jgfs.net manual pages