GNU/Linux man pages
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GNU/Linux |
Debian 7.2.0(Wheezy) |
amd64 |
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g3topbm(1) |
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g3topbm - convert a Group 3 fax file into a portable bitmap
g3topbm [-kludge] [-reversebits] [-stretch] [g3file]
Reads a Group 3 fax file as input. Produces a portable bitmap as output.
-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.
The standard for Group 3 fax is defined in CCITT Recommendation T.4.
Probably.
pbmtog3(1), pbm(5)
Copyright (C) 1989 by Paul Haeberli <paul@manray.sgi.com>.
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g3topbm(1) | |