fstopgm
NAME SYNOPSIS DESCRIPTION SEE ALSO AUTHOR
fstopgm - convert a Usenix FaceSaver?(tm) file into a portable graymap
fstopgm [''fsfile''?
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
fstopgm | pnmscale -whatever | pgmnorm
fstopgm | pnmenlarge 3 | pnmscale 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(5), pgmnorm(1), pnmenlarge(1), pnmscale(1), pgmtopbm(1)
Copyright (C) 1989 by Jef Poskanzer.
4 pages link to fstopgm(1):