g3topbm(1) - phpMan

g3topbm(1)                           General Commands Manual                           g3topbm(1)

NAME
       g3topbm - convert a Group 3 fax file into a portable bitmap

SYNOPSIS
       g3topbm [-kludge] [-reversebits] [-stretch] [g3file]

DESCRIPTION
       Reads a Group 3 fax file as input.  Produces a portable bitmap as output.

OPTIONS
       -kludge
              Tells  g3topbm  to ignore the first few lines of the file; sometimes fax files have
              some junk at the beginning.

       -reversebits
              Tells g3topbm to interpret bits least-significant first,  instead  of  the  default
              most-significant  first.  Apparently some fax modems do it one way and others do it
              the other way.  If you get a whole bunch of "bad code  word"  messages,  try  using
              this flag.

       -stretch
              Tells g3topbm to stretch the image vertically by duplicating each row.  This is for
              the low-quality transmission mode.

       All flags can be abbreviated to their shortest unique prefix.

REFERENCES
       The standard for Group 3 fax is defined in CCITT Recommendation T.4.

BUGS
       Probably.

SEE ALSO
       pbmtog3(1), pbm(5)

AUTHOR
       Copyright (C) 1989 by Paul Haeberli <paul AT manray.com>.

                                         02 October 1989                               g3topbm(1)

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