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- pnmalias(1) AMIGA (30 April 1992) pnmalias(1)
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- NAME
- pnmalias - antialias a portable anyumap.
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- SYNOPSIS
- pnmalias [-bgcolor color] [-fgcolor color] [-bonly] [-fonly]
- [-balias] [-falias] [-weight w] [pnmfile]
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- 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.
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- 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:
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- o A name, assuming that a pointer to an X11-style
- color names file was compiled in.
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- o An X11-style hexadecimal specifier: rgb:r/g/b,
- where r g and b are each 1- to 4-digit hexadecimal
- numbers.
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- o An X11-style decimal specifier: rgbi:r/g/b, where
- r g and b are floating point numbers between 0 and
- 1.
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- o For backwards compatibility, an old-X11-style
- hexadecimal number: #rgb, #rrggbb, #rrrgggbbb, or
- #rrrrggggbbbb.
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- 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.)
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- 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.
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- -bonly, -fonly
- Apply anti-aliasing only to background (-bonly), or
- foreground (-fonly) pixels.
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- Page 1 (printed 3/1/94)
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- pnmalias(1) AMIGA (30 April 1992) pnmalias(1)
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- -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.
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- -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.
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- SEE ALSO
- pbmtext(1), pnmsmooth(1), pnm(5)
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- AUTHOR
- Copyright (C) 1992 by Alberto Accomazzi, Smithsonian
- Astrophysical Observatory.
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- Page 2 (printed 3/1/94)
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