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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML><HEAD><TITLE>Pamoil User Manual</TITLE>
</HEAD><BODY>
<H1>pamoil</H1>
Updated: 25 June 2001
<BR>
<A HREF="#index">Table Of Contents</A>
<A NAME="lbAB"> </A>
<H2>NAME</H2>
pamoil - turn a PAM image into an oil painting
<A NAME="lbAC"> </A>
<H2>SYNOPSIS</H2>
<B>pamoil</B>
[<B>-n</B> <I>N</I>]
[<I>pamfile</I>]
<A NAME="lbAD"> </A>
<H2>DESCRIPTION</H2>
<p>This program is part of <a href="index.html">Netpbm</a>.
<p><b>pamoil</b> reads a Netpbm image as input and does an "oil
transfer", and writes the same type of Netpbm image as output.
<P>The oil transfer is described in "Beyond Photography" by
Holzmann, chapter 4, photo 7. It's a sort of localized smearing.
<P>The smearing works like this: First, assume a grayscale image. For
each pixel in the image, <B>pamoil</B> looks at a square neighborhood
around it. <B>pamoil</B> determines what is the most common pixel
intensity in the neighborhood, and puts a pixel of that intensity into
the output in the same position as the input pixel.
<P>For color images, or any arbitrary multi-channel image,
<B>pamoil</B> computes each channel (e.g. red, green, and blue)
separately the same way as the grayscale case above.
<P>At the edges of the image, where the regular neighborhood would run
off the edge of the image, <B>pamoil</B> uses a clipped neighborhood.
<A NAME="lbAE"> </A>
<H2>OPTIONS</H2>
<DL COMPACT>
<DT><B>-n</B> <I>size</I>
<DD>This is the size of the neighborhood used in the smearing. The
neighborhood is this many pixels in all four directions.
<P>The default is 3.
</DL>
<A NAME="lbAF"> </A>
<H2>SEE ALSO</H2>
<B><A HREF="pgmbentley.html">pgmbentley</A></B>,
<B><A HREF="ppmrelief.html">ppmrelief</A></B>,
<B><A HREF="ppm.html">ppm</A></B>
<P>
<A NAME="lbAG"> </A>
<H2>AUTHOR</H2>
<p>This program is based on pgmoil Copyright (C) 1990 by Wilson Bent
(<A HREF="mailto:whb@hoh-2.att.com">whb@hoh-2.att.com</A>)
<P>Modified to ppm by Chris Sheppard, June 25, 2001
<P>Modified to pnm, using pam functions, by Bryan Henderson June 28,
2001.
<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">OPTIONS</A>
<LI><A HREF="#lbAF">SEE ALSO</A>
<LI><A HREF="#lbAG">AUTHOR</A>
</UL>
</BODY>
</HTML>
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