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+<html>
+<head>
+<title>png2pdf - Convert PNG images to PDF</title>
+<link rel="stylesheet" type="text/css" href="style.css">
+</head>
+<body>
+<div class="header">
+<p>
+<table width="100%" class="headertable">
+<tr class="headertr">
+<td class="headertdleft"><h1>png2pdf</h1></td>
+<td class="headertdright" rowspan="2">
+<a target="_blank" href="http://sourceforge.net/"><img src="sflogo.png" width="210" height="62" border="0" alt="SourceForge.net Logo"/></a>
+</td>
+</tr>
+<td class="headertdleft"><span class="subtitle">Convert <u>PNG</u> images <u>to</u> <u>PDF</u></span></td>
+</tr>
+</table>
+<table width="100%" class="navimenutable">
+<tr class="navimenutr">
+<td class="navimenutd">
+<span class="navimenucurrent">Overview</span>&nbsp;&nbsp;&nbsp;/&nbsp;&nbsp;&nbsp;<a class="navimenulink" href="install.html">Installation</a>&nbsp;&nbsp;&nbsp;/&nbsp;&nbsp;&nbsp;<a class="navimenulink" href="usage.html">Usage</a>&nbsp;&nbsp;&nbsp;/&nbsp;&nbsp;&nbsp;<a class="navimenulink" href="ppgui.html">GUI</a>&nbsp;&nbsp;&nbsp;/&nbsp;&nbsp;&nbsp;<a class="navimenulink" href="faq.html">FAQ</a>&nbsp;&nbsp;&nbsp;/&nbsp;&nbsp;&nbsp;<a class="navimenulink" href="changes.html">Change&nbsp;Log</a>&nbsp;&nbsp;&nbsp;/&nbsp;&nbsp;&nbsp;<a class="navimenulink" href="projects.html">Other&nbsp;Projects</a>
+</td>
+</tr>
+</table>
+</p>
+</div>
+<div class="text">
+<table width="100%">
+<tr>
+<td class="h2tdleft"><h2>Image interpolation</h2></td>
+<td class="h2tdright"><a class="smallotherlink" href="png2pdf.pdf">PDF manual "png2pdf.pdf" available</a></td>
+</tr>
+</table>
+<p>
+Image interpolation can be used to obtain smoother color transition
+when low-resolution bitmap images are rendered to large screen areas
+or print areas.<br>
+The examples are from screenshots of the SourceForge logo converted to PDF
+and shown expanded to fit the page width.<br>
+The first conversion was done without setting an Interpolate entry
+in the image dictionary, the second one uses the Interpolate entry.
+</p>
+<p align="center">
+<img src="sfl1.png"><br>
+Figure 1: Image without interpolation
+</p>
+<p align="center">
+<img src="sfl2.png"><br>
+Figure 2: Interpolated image
+</p>
+<p>
+As seen in the images above interpolated images may look better
+on screen than images without interpolation.<br>
+When using png2pdf's interpolation option keep in mind that
+the interpolation algorithm used to show the image depends on both the
+viewer software used and the output device.
+</p>
+</div>
+<div class="footer">
+<p>
+<table width="100%" class="footertable">
+<tr class="footertr">
+<td class="footertdleft">Dirk Krause</td>
+<td class="footertdcenter">http://png2pdf.sourceforge.net</td>
+<td class="footertdright">2005/02/01</td>
+</tr>
+</table>
+</p>
+</div>
+</body>
+</html>
+