Provided by: netpbm_10.0-15.3build1_amd64 
NAME
pnmalias - antialias a portable anyumap.
SYNOPSIS
pnmalias [-bgcolor color] [-fgcolor color] [-bonly] [-fonly] [-balias] [-falias] [-weight w] [pnmfile]
DESCRIPTION
Reads a portable anymap as input, and applies anti-aliasing to background and foreground pixels. If the
input file is a portable bitmap, the output anti-aliased image is promoted to a graymap, and a message is
printed informing the user of the change in format.
OPTIONS
-bgcolor colorb, -fgcolor colorf
set the background color to colorb, and the foreground to color to colorf. Pixels with these
values will be anti-aliased. by default, the background color is taken to be black, and foreground
color is assumed to be white. The colors can be specified in five ways:
o A name, assuming that a pointer to an X11-style color names file was compiled in.
o An X11-style hexadecimal specifier: rgb:r/g/b, where r g and b are each 1- to 4-digit
hexadecimal numbers.
o An X11-style decimal specifier: rgbi:r/g/b, where r g and b are floating point numbers
between 0 and 1.
o For backwards compatibility, an old-X11-style hexadecimal number: #rgb, #rrggbb, #rrrgggbbb,
or #rrrrggggbbbb.
o For backwards compatibility, a triplet of numbers separated by commas: r,g,b, where r g and b
are floating point numbers between 0 and 1. (This style was added before MIT came up with
the similar rgbi style.)
Note that even when dealing with graymaps, background and foreground colors need to be specified
in the fashion described above. In this case, background and foreground pixel values are taken to
be the value of the red component for the given color.
-bonly, -fonly
Apply anti-aliasing only to background (-bonly), or foreground (-fonly) pixels.
-balias, -falias
Apply anti-aliasing to all pixels surrounding background (-balias), or foreground (-falias)
pixels. By default, anti-aliasing takes place only among neighboring background and foreground
pixels.
-weight w
Use w as the central weight for the aliasing filter. W must be a real number in the range 0 < w <
1. The lower the value of w is, the "blurrier" the output image is. The default is w = 1/3.
SEE ALSO
pbmtext(1), pnmsmooth(1), pnm(5)
AUTHOR
Copyright (C) 1992 by Alberto Accomazzi, Smithsonian Astrophysical Observatory.
30 April 1992 pnmalias(1)