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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML><HEAD><TITLE>Pgmbentley User Manual</TITLE></HEAD>
<BODY>
<H1>pgmbentley</H1>
Updated: 11 January 1991
<BR>
<A HREF="#index">Table Of Contents</A>

<H2>NAME</H2>
pgmbentley - Bentleyize a PGM image

<H2 id="synopsis">SYNOPSIS</H2>

<B>pgmbentley</B>
[<I>pgmfile</I>]

<H2 id="description">DESCRIPTION</H2>

<p>This program is part of <a href="index.html">Netpbm</a>.

<p><b>pgmbentley</b> reads a PGM image as input and performs the
Bentley Effect, and writes a PGM image as output.

<p>The Bentley Effect is described in &quot;Beyond Photography&quot;
by Holzmann, chapter 4, photo 4.  It's a vertical smearing based on
brightness.

<H2 ID="seealso">SEE ALSO</H2>

<A HREF="pgmoil.html">pgmoil</A>,
<A HREF="ppmrelief.html">ppmrelief</A>,
<A HREF="pgm.html">pgm</A>

<H2 id="author">AUTHOR</H2>

Copyright (C) 1990 by Wilson Bent (<A
HREF="mailto:whb@hoh-2.att.com">whb@hoh-2.att.com</A>)


<HR>
<H2 id="index">Table Of Contents</H2>
<UL>
<LI><A HREF="#synopsis">SYNOPSIS</A>
<LI><A HREF="#description">DESCRIPTION</A>
<LI><A HREF="#seealso">SEE ALSO</A>
<LI><A HREF="#author">AUTHOR</A>
</UL>
</BODY>
</HTML>