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Annotated edit history of fstopgm(1) version 2, including all changes. View license author blame.
Rev Author # Line
1 perry 1 fstopgm
2 !!!fstopgm
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 SEE ALSO
7 AUTHOR
8 ----
9 !!NAME
10
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2 perry 12 fstopgm - convert a Usenix !FaceSaver(tm) file into a portable graymap
1 perry 13 !!SYNOPSIS
14
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16 __fstopgm__ [[''fsfile'']
17 !!DESCRIPTION
18
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2 perry 20 Reads a Usenix !FaceSaver(tm) file as input. Produces a
1 perry 21 portable graymap as output.
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2 perry 24 !FaceSaver(tm) files sometimes have rectangular pixels. While
1 perry 25 ''fstopgm'' won't re-scale them into square pixels for
26 you, it will give you the precise ''pnmscale'' command
27 that will do the job. Because of this, reading a
2 perry 28 !FaceSaver(tm) image is a two-step process. First you
1 perry 29 do:
30
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32 fstopgm
33 This will tell you whether you need to use ''pnmscale.'' Then use one of the following pipelines:
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36 fstopgm | pgmnorm
37 fstopgm | pnmscale -whatever | pgmnorm
38 To go to PBM, you want something more like one of these:
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41 fstopgm | pnmenlarge 3 | pgmnorm | pgmtopbm
42 fstopgm | pnmenlarge 3 | pnmscale
43 You want to enlarge when going to a bitmap because otherwise you lose information; but enlarging by more than 3 does not look good.
44
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2 perry 46 !FaceSaver is a registered trademark of Metron Computerware
1 perry 47 Ltd. of Oakland, CA.
48 !!SEE ALSO
49
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51 pgmtofs(1), pgm(5), pgmnorm(1), pnmenlarge(1), pnmscale(1),
52 pgmtopbm(1)
53 !!AUTHOR
54
55
56 Copyright (C) 1989 by Jef Poskanzer.
57 ----
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