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@manray.sgi.com>.

                                                 02 October 1989                                      g3topbm(1)