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@manray.sgi.com>.

                            02 October 1989                     g3topbm(1)

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Free and Open Source Software