Codex

fstopgm

Section: User Commands (1)

Updated: 06 April 89

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NAME

fstopgm - convert a Usenix FaceSaver(tm) file into a portable graymap

SYNOPSIS

fstopgm [fsfile]

DESCRIPTION

Reads a Usenix FaceSaver(tm) file as input. ]] Produces a portable graymap 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 pnmscale command that will do the job. Because of this, reading a FaceSaver(tm) image is a two-step process. First you do:

This will tell you whether you need to use pnmscale. Then use one of the following pipelines:

To go to PBM, you want something more like one of these:

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?(5), pgmnorm?(1), pnmenlarge?(1), pnmscale?(1), pgmtopbm?(1)

AUTHOR

Copyright (C) 1989 by Jef Poskanzer.


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SYNOPSIS

DESCRIPTION

SEE ALSO

AUTHOR


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