1Pbmtoascii User Manual(0)                            Pbmtoascii User Manual(0)
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NAME

6       pbmtoascii - convert a PBM image to ASCII graphics
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SYNOPSIS

10       pbmtoascii
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12       [-1x2|-2x4]
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14       [pbmfile]
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DESCRIPTION

18       This program is part of Netpbm(1).
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20       pbmtoascii  reads  a  PBM  image as input and produces a somewhat crude
21       ASCII graphic image as output.
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23       To convert back, use asciitopgm(1).
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25       ppmtoterm does a similar thing for color  images  to  be  displayed  on
26       color text terminals.
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OPTIONS

31       The -1x2 and -2x4 options give you two alternate ways for the pixels to
32       get mapped to characters.  With 1x2, the default, each character repre‐
33       sents  a  group  of  1  pixel across by 2 pixels down.  With -2x4, each
34       character represents 2 pixels across by 4 pixels down.   With  the  1x2
35       mode  you  can see the individual pixels, so it's useful for previewing
36       small images on a non-graphics terminal.  The 2x4 mode lets you display
37       larger  images on a small display, but it obscures pixel-level details.
38       2x4 mode is also good for displaying PGM images:
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40       pamscale -width 158 | pnmnorm | pamditherbw -threshold | pbmtoascii -2x4
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42       should give good results.
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SEE ALSO

46       asciitopgm(1) ppmtoascii(1) ppmtoterm(1) pbm(1)
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AUTHOR

50       Copyright (C) 1988, 1992 by Jef Poskanzer.
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54netpbm documentation             02 April 2010       Pbmtoascii User Manual(0)