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diff --git a/pnmalias.html b/pnmalias.html new file mode 100644 index 00000000..e8e0528e --- /dev/null +++ b/pnmalias.html @@ -0,0 +1,102 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML><HEAD><TITLE>Pnmalias User Manual</TITLE></HEAD> +<BODY> +<H1>pnmalias</H1> +Updated: 15 March 2004 +<BR> +<A HREF="#index">Table Of Contents</A> + +<H2>NAME</H2> + +pnmalias - antialias a PNM image + +<H2 id="synopsis">SYNOPSIS</H2> + +<B>pnmalias</B> + +[<B>-bgcolor</B> <I>color</I>] + +[<B>-fgcolor</B> <I>color</I>] + +[<B>-bonly</B>] + +[<B>-fonly</B>] + +[<B>-balias</B>] + +[<B>-falias</B>] + +[<B>-weight</B> <I>w</I>] + +[<I>pnmfile</I>] + +<H2 id="description">DESCRIPTION</H2> + +<p>This program is part of <a href="index.html">Netpbm</a>. + +<p><b>pnmalias</b> reads a PNM image as input, and applies +anti-aliasing to background and foreground pixels. If the input file +is a PBM, <b>pnmalias</b> promotes the output anti-aliased image to a +PGM, and prints a message informing the user of the change in format. + +<H2 id="options">OPTIONS</H2> + +<P><B>-bgcolor</B> <I>colorb</I> sets the background color the +<i>colorb</i>. + +<p><B>-fgcolor</B> <I>colorf</I> sets the foreground color to +<i>colorf</i>. + +<p>Pixels with these values will be anti-aliased. By default, +<b>pnmalias</b> takes the background color to be black, and foreground +color to be white. + +<P>Specify the color (<i>color</i>) as described for the <a +href="libppm.html#colorname">argument of the <b>ppm_parsecolor()</b> +library routine</a>. + +<P>Note that even when dealing with PGMs, background and foreground +colors need to be specified in the fashion described above. In this +case, <b>pnmalias</b> takes the background and foreground pixel values +to be the value of the red component for the specified color. + +<P><B>-bonly</B> says to apply anti-aliasing only to the background pixels. + +<p><B>-fonly</B> says to apply anti-aliasing only to the foreground pixels. + +<P><B>-balias</B> says to apply anti-aliasing to all pixels surrounding +background pixels. + +<P><B>-falias</B> says to apply anti-aliasing to all pixels surrounding +foreground pixels. + +<p>If you specify neither <b>-balias</b> nor <b>-falias</b>, +<b>pnmalias</b> applies anti-aliasing only among neighboring +background and foreground pixels. + +<P><B>-weight</B> <I>w</I> says to use <I>w</I> as the central weight +for the aliasing filter. <I>w</I> must be a real number in the range +0 < <I>w</I> < 1. The lower the value of <I>w</I> is, the +"blurrier" the output image is. The default is w = 1/3. + +<H2 id="seealso">SEE ALSO</H2> + +<A HREF="pbmtext.html">pbmtext</A>, +<A HREF="pnmsmooth.html">pnmsmooth</A>, +<A HREF="pnm.html">pnm</A> + +<H2 id="author">AUTHOR</H2> + +Copyright (C) 1992 by Alberto Accomazzi, Smithsonian Astrophysical Observatory. + +<HR> +<H2 id="index">Table Of Contents</H2> +<UL> +<LI><A HREF="#synopsis">SYNOPSIS</A> +<LI><A HREF="#description">DESCRIPTION</A> +<LI><A HREF="#options">OPTIONS</A> +<LI><A HREF="#seealso">SEE ALSO</A> +<LI><A HREF="#author">AUTHOR</A> +</UL> +</BODY> +</HTML> |