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pnmdepth.1
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1995-07-25
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1KB
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67 lines
ppppnnnnmmmmddddeeeepppptttthhhh((((1111)))) XXXXEEEENNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV ((((11112222 JJJJaaaannnnuuuuaaaarrrryyyy 1111999999991111)))) ppppnnnnmmmmddddeeeepppptttthhhh((((1111))))
NNNNAAAAMMMMEEEE
pnmdepth - change the maxval in a portable anymap
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
ppppnnnnmmmmddddeeeepppptttthhhh _n_e_w_m_a_x_v_a_l [_p_n_m_f_i_l_e]
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
Reads a portable anymap as input. Scales all the pixel
values, and writes out the image with the new maxval.
Scaling the colors down to a smaller maxval will result in
some loss of information.
Be careful of off-by-one errors when choosing the new
maxval. For instance, if you want the color values to be
five bits wide, use a maxval of 31, not 32.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
pnm(5), ppmquant(1), ppmdither(1)
AAAAUUUUTTTTHHHHOOOORRRR
Copyright (C) 1989, 1991 by Jef Poskanzer.
Page 1 (printed 9/7/93)