NAME¶
g3toxwd - converts a Group 3 fax file into a displayable xwd file
SYNOPSIS¶
g3toxwd [
-kludge] [
-reversebits] [
-scale N]
[
-aspect N] [
-skiprows N] [
-name xwdname]
[
g3file]
DESCRIPTION¶
Reads a Group 3 fax file (raw or digifax) as input. If no filename is given,
stdin is used. Produces a displayable xwd file as output.
OPTIONS¶
- -kludge
- Tells g3toxwd to skip the first lines for
synchronisation.
- -reversebits
- Tells g3toxwd 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 "invalid code" messages, try using this flag.
- -scale N
- Scale the output to match the printer resolution and paper
size, the default of 0.58 will do in most cases.
- -aspect N
- Scale the output to match the printer resolution and paper
size, the default of 1.0 will do for high resolution faxes, 2.0 will do
for low resolution faxes.
- -skiprows N
- N faxrows of the input file will be skipped.
- -name <name>
- The name <name> will be put in the output file for
xwd.
REFERENCES¶
The standard for Group 3 fax is defined in CCITT Recommendation T.4.
BUGS¶
Long fax files are not handled properly. Output size fixed 1000x1350 pixels
defined at compile time. Please report bugs to chel@vangennip.nl
SEE ALSO¶
pbmtog3(1),
pbm(5),
g3cat(1),
sendfax(8), mgetty(1)
AUTHOR¶
g3toxwd is Copyright (C) 1994 by Chel van Gennip,
<chel@vangennip.nl>. Sources of
g3topbm and
pbmtoxwd
programs in Jef Poskanzers
pbmplus package have been used, but al lot
of code has been changed or added to simplify its use for displaying faxes.
Value added: low use of memory, fast scaling.