Pbmtoascii User Manual(0) Pbmtoascii User Manual(0)
pbmtoascii - convert a PBM image to ASCII graphics
This program is part of Netpbm(1).
pbmtoascii reads a PBM image as input and produces a somewhat crude
ASCII graphic image as output.
To convert back, use asciitopgm(1).
The -1x2 and -2x4 options give you two alternate ways for the pixels to
get mapped to characters. With 1x2, the default, each character repre-
sents a group of 1 pixel across by 2 pixels down. With -2x4, each
character represents 2 pixels across by 4 pixels down. With the 1x2
mode you can see the individual pixels, so it’s useful for previewing
small images on a non-graphics terminal. The 2x4 mode lets you display
larger images on a standard 80-column display, but it obscures pixel-
level details. 2x4 mode is also good for displaying PGM images:
pamscale -width 158 | pnmnorm | pamditherbw -threshold
should give good results.
Copyright (C) 1988, 1992 by Jef Poskanzer.
netpbm documentation 11 August 2002 Pbmtoascii User Manual(0)
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