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diff --git a/pnminvert.html b/pnminvert.html new file mode 100644 index 00000000..ff858dfc --- /dev/null +++ b/pnminvert.html @@ -0,0 +1,57 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML><HEAD><TITLE>Pnminvert User Manual</TITLE></HEAD> +<BODY> +<H1>pnminvert</H1> +Updated: 08 August 1989 +<BR> +<A HREF="#index">Table Of Contents</A> + +<A NAME="lbAB"> </A> +<H2>NAME</H2> + +pnminvert - invert a PNM image + +<A NAME="lbAC"> </A> +<H2>SYNOPSIS</H2> + +<B>pnminvert</B> + +[<I>pnmfile</I>] + +<A NAME="lbAD"> </A> +<H2>DESCRIPTION</H2> + +<p>This program is part of <a href="index.html">Netpbm</a>. + +<p><b>pnminvert</b> reads a PNM image as input, inverts it black for +white, and produces a PNM image as output. + +<p>If the image is grayscale, <b>pnminvert</b> replaces a pixel with +one of complementary brightness, i.e. if the original pixel has gamma-adjusted +gray value G, the output pixel has gray value maxval - G. + +<p>If the image is color, <b>pnminvert</b> inverts each individual RGB +component the same as for a grayscale image. + +<A NAME="lbAE"> </A> +<H2>SEE ALSO</H2> + +<A HREF="pnm.html">pnm</A> + +<A NAME="lbAF"> </A> +<H2>AUTHOR</H2> + +Copyright (C) 1989 by Jef Poskanzer. + +<HR> +<A NAME="index"> </A> +<H2>Table Of Contents</H2> +<UL> +<LI><A HREF="#lbAB">NAME</A> +<LI><A HREF="#lbAC">SYNOPSIS</A> +<LI><A HREF="#lbAD">DESCRIPTION</A> +<LI><A HREF="#lbAE">SEE ALSO</A> +<LI><A HREF="#lbAF">AUTHOR</A> +</UL> +</BODY> +</HTML> |