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- ppppppppmmmmttttooooppppggggmmmm((((1111)))) XXXXEEEENNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV ((((22223333 DDDDeeeecccceeeemmmmbbbbeeeerrrr 1111999988888888)))) ppppppppmmmmttttooooppppggggmmmm((((1111))))
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- NNNNAAAAMMMMEEEE
- ppmtopgm - convert a portable pixmap into a portable graymap
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- ppppppppmmmmttttooooppppggggmmmm [_p_p_m_f_i_l_e]
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- Reads a portable pixmap as input. Produces a portable
- graymap as output. The quantization formula used is .299 r
- + .587 g + .114 b.
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- Note that although there is a _p_g_m_t_o_p_p_m program, it is not
- necessary for simple conversions from _p_g_m to _p_p_m, because
- any ppm program can read _p_g_m (and _p_b_m ) files automagically.
- _p_g_m_t_o_p_p_m is for colorizing a _p_g_m file. Also, see _p_p_m_t_o_r_g_b_3
- for a different way of converting color to gray.
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- QQQQUUUUOOOOTTTTEEEE
- Cold-hearted orb that rules the night
- Removes the colors from our sight
- Red is gray, and yellow white
- But we decide which is right
- And which is a quantization error.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- pgmtoppm(1), ppmtorgb3(1), rgb3toppm(1), ppm(5), pgm(5)
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- AAAAUUUUTTTTHHHHOOOORRRR
- Copyright (C) 1989 by Jef Poskanzer.
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- Page 1 (printed 9/7/93)
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