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asciitopgm(1) AMIGA (26 December 1994) asciitopgm(1)
NAME
asciitopgm - convert ASCII graphics into a portable graymap
SYNOPSIS
asciitopgm [-d divisor] height width [asciifile]
DESCRIPTION
Reads ASCII data as input. Produces a portable graymap with
pixel values which are an approximation of the "brightness"
of the ASCII characters, assuming black-on-white printing.
In other words, a capital M is very dark, a period is ver
light, and a space is white. Input lines which are fewer
than width characters are automatically padded with spaces.
The divisor argument is a floating-point number by which the
output pixels are divided; the default value is 1.0. This
can be used to adjust the brightness of the graymap: for
example, if the image is too dim, reduce the divisor.
In keeping with (I believe) Fortran line-printer
conventions, input lines beginning with a + (plus) character
are assumed to "overstrike" the previous line, allowing a
larger range of gray values.
This tool contradicts the message in the pbmtoascii manual:
"Note that there is no asciitopbm tool - this transformation
is one-way."
BUGS
The table of ASCII-to-grey values is subject to
interpretation, and, of course, depends on the typeface
intended for the input.
SEE ALSO
pbmtoascii(1), pgm(5)
AUTHOR
Wilson H. Bent. Jr. (whb@usc.edu)
Page 1 (printed 3/1/94)