pbmtoascii(1) General Commands Manual pbmtoascii(1)
pbmtoascii - convert a portable bitmap into ASCII graphics
pbmtoascii [-1x2|-2x4] [pbmfile]
Reads a portable bitmap as input. Produces a somewhat crude ASCII
graphic as output.
Note that there is no asciitopbm tool - this transformation is one-way.
The -1x2 and -2x4 flags give you two alternate ways for the bits to get
mapped to characters. With 1x2, the default, each character represents
a group of 1 bit across by 2 bits down. With -2x4, each character rep-
resents 2 bits across by 4 bits down. With the 1x2 mode you can see
the individual bits, so it's useful for previewing small bitmaps on a
non-graphics terminal. The 2x4 mode lets you display larger bitmaps on
a standard 80-column display, but it obscures bit-level details. 2x4
mode is also good for displaying graymaps - "pnmscale -width 158 | pgm-
norm | pgmtopbm -thresh" should give good results.
Copyright (C) 1988, 1992 by Jef Poskanzer.
20 March 1992 pbmtoascii(1)
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