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- g3topbm(1) Unix Programmer's Manual g3topbm(1)
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- NNNAAAMMMEEE
- g3topbm - convert a Group 3 FAX file into a portable bitmap
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- SSSYYYNNNOOOPPPSSSIIISSS
- ggg333tttooopppbbbmmm [-kkkllluuudddgggeee] [-rrreeevvveeerrrssseeebbbiiitttsss] [-ssstttrrreeetttccchhh] [_g_3_f_i_l_e]
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- DDDEEESSSCCCRRRIIIPPPTTTIIIOOONNN
- Reads a Group 3 FAX file as input. Produces a portable bitmap as output.
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- OOOPPPTTTIIIOOONNNSSS
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- ---kkkllluuudddgggeee
- Tells _g_3_t_o_p_b_m to ignore the first few lines of the file; sometimes
- FAX files have some junk at the beginning.
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- ---rrreeevvveeerrrssseeebbbiiitttsss
- Tells _g_3_t_o_p_b_m 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.
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- ---ssstttrrreeetttccchhh
- Tells _g_3_t_o_p_b_m to stretch the image vertically by duplicating each
- row. This is for the low-quality transmission mode.
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- All flags can be abbreviated to their shortest unique prefix.
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- RRREEEFFFEEERRREEENNNCCCEEESSS
- The standard for Group 3 FAX is defined in CCITT Recommendation T.4.
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- SSSEEEEEE AAALLLSSSOOO
- pbmtog3(1), pbm(5)
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- AAAUUUTTTHHHOOORRR
- Copyright (C) 1989 by Paul Haeberli <paul@manray.sgi.com>.
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- 02 October 1989 1
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