pbmtoascii(1) [minix man page]

pbmtoascii(1)                                                 General Commands Manual                                                pbmtoascii(1)

NAME

       pbmtoascii - convert a portable bitmap into ASCII graphics

SYNOPSIS

       pbmtoascii [-1x2|-2x4] [pbmfile]

DESCRIPTION

       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.

OPTIONS

       The -1x2 and -2x4 flags give you two alternate ways for the bits to get mapped to characters.  With 1x2, the default, each character repre-
       sents a group of 1 bit across by 2 bits down.  With -2x4, each character represents 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 | pgmnorm | pgmtopbm -thresh" should give good results.

SEE ALSO

       pbm(5)

AUTHOR

       Copyright (C) 1988, 1992 by Jef Poskanzer.

                                                                   20 March 1992                                                     pbmtoascii(1)

asciitopgm(1)                                                 General Commands Manual                                                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 char-
       acters, 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)

                                                                 26 December 1994                                                    asciitopgm(1)