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<?xml version='1.0'?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" "docbook/xml-dtd-4.1.2-1.0-8/docbookx.dtd" [
<!ENTITY prog "refocus">
<!ENTITY using SYSTEM "using-inc.xml">
<!ENTITY install SYSTEM "install-inc.xml">
]>
<article class="whitepaper">
<articleinfo>
<title>&prog;</title>
<subtitle>A Gimp plug-in for sharpening images</subtitle>
<author>
<firstname>Ernst</firstname>
<surname>Lippe</surname>
<affiliation>
<address><email>ernstl@users.sourceforge.net</email></address>
</affiliation>
</author>
</articleinfo>
<sect1>
<title>Introduction</title>
<para>The &prog; Gimp plug-in can be used to sharpen images.
Frequently, when processing images, e.g. when scanning photo's
or slides, the images become slightly blurred.
This plug-in attempts to "refocus" the image.
In many cases this plug-in produces much better results than similar
plug-ins such as sharpen or unsharp mask.
</para>
<para>This plug-in has a preview that helps you select the best parameters.</para>
<para>Instructions for installing the plug-in are described in <xref linkend="installation"/>. </para>
<para>Instructions for using the plug-in are described in <xref linkend="using"/>. </para>
<para>The home page for the Refocus plug-in is located at
<ulink url="http://refocus.sourceforge.net">http://refocus.sourceforge.net</ulink>.</para>
</sect1>
&install;
&using;
<sect1>
<title>Acknowledgements</title>
<para>The Gimp developers, Shawn T. Amundson for the GimpPreview widget,
Lauri Alanko for the Convolution Matrix plug-in, ATLAS, CLAPACK.</para>
</sect1>
</article>
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