1Fstopgm User Manual(0)                                  Fstopgm User Manual(0)
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NAME

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

11       fstopgm [fsfile]
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DESCRIPTION

15       This program is part of Netpbm(1).
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17       fstopgm  reads  a Usenix FaceSaver(tm) file as input and produces a PGM
18       image as output.
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20       FaceSaver(tm) files sometimes have rectangular pixels.   While  fstopgm
21       won't  re-scale  them  into square pixels for you, it will give you the
22       precise pamscale command that will do the job.  Because of this,  read‐
23       ing a FaceSaver(tm) image is a two-step process.  First you do:
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25         fstopgm > /dev/null
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27       This will tell you whether you need to use pamscale.
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29       Then use one of the following pipelines:
30         fstopgm | pgmnorm
31         fstopgm | pamscale -whatever | pgmnorm
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33       To go to PBM, you want something more like one of these:
34         fstopgm | pamenlarge 3 | pgmnorm | pamditherbw
35         fstopgm | pamenlarge 3 | pamscale <whatever> | pgmnorm | pamditherbw
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37       You  want  to enlarge when going to a bitmap because otherwise you lose
38       information; but enlarging by more than 3 does not look good.
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40       FaceSaver is a registered trademark of Metron Computerware Ltd. of Oak‐
41       land, CA.
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SEE ALSO

46       pgmtofs(1),    pgm(1),    pgmnorm(1),    pamenlarge(1),    pamscale(1),
47       pamditherbw(1)
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AUTHOR

52       Copyright (C) 1989 by Jef Poskanzer.
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56netpbm documentation              06 April 89           Fstopgm User Manual(0)