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  • Committer: Bazaar Package Importer
  • Author(s): Jonas Smedegaard
  • Date: 2010-09-13 19:49:29 UTC
  • Revision ID: james.westby@ubuntu.com-20100913194929-qz90a14xyxln9yfz
Tags: upstream-0.10.2
Import upstream version 0.10.2

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docs/plugins/html/gst-entrans-plugins-unsharp.html
 
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 
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<html>
 
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<head>
 
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 
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<title>unsharp</title>
 
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2">
 
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<link rel="start" href="index.html" title="GStreamer Entrans 0.10 Reference Manual">
 
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<link rel="up" href="ch01.html" title="gst-entrans Elements">
 
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<link rel="prev" href="gst-entrans-plugins-stamp.html" title="stamp">
 
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<link rel="next" href="gst-entrans-plugins-whitebalance.html" title="whitebalance">
 
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<meta name="generator" content="GTK-Doc V1.11 (XML mode)">
 
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<link rel="stylesheet" href="style.css" type="text/css">
 
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<link rel="chapter" href="ch01.html" title="gst-entrans Elements">
 
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<link rel="chapter" href="ch02.html" title="gst-entrans Plugins">
 
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<link rel="chapter" href="ch03.html" title="gst-entrans Helper Elements and Utilities">
 
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</head>
 
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
 
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<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
 
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<tr valign="middle">
 
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<td><a accesskey="p" href="gst-entrans-plugins-stamp.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
 
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<td><a accesskey="u" href="ch01.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
 
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<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
 
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<th width="100%" align="center">GStreamer Entrans 0.10 Reference Manual</th>
 
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<td><a accesskey="n" href="gst-entrans-plugins-whitebalance.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
 
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</tr>
 
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<tr><td colspan="5" class="shortcuts">
 
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<a href="#gst-entrans-plugins-unsharp.synopsis" class="shortcut">Top</a>
 
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                 | 
 
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                <a href="#gst-entrans-plugins-unsharp.description" class="shortcut">Description</a>
 
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                 | 
 
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                <a href="#gst-entrans-plugins-unsharp.object-hierarchy" class="shortcut">Object Hierarchy</a>
 
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                 | 
 
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                <a href="#gst-entrans-plugins-unsharp.properties" class="shortcut">Properties</a>
 
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</td></tr>
 
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</table>
 
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<div class="refentry" lang="en">
 
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<a name="gst-entrans-plugins-unsharp"></a><div class="titlepage"></div>
 
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<div class="refnamediv"><table width="100%"><tr>
 
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<td valign="top">
 
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<h2><span class="refentrytitle"><a name="gst-entrans-plugins-unsharp.top_of_page"></a>unsharp</span></h2>
 
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<p>unsharp — (Un)Sharpen using Gaussian blur</p>
 
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</td>
 
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<td valign="top" align="right"></td>
 
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</tr></table></div>
 
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<div class="refsynopsisdiv">
 
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<a name="gst-entrans-plugins-unsharp.synopsis"></a><h2>Synopsis</h2>
 
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<a name="GstUnsharp"></a><pre class="synopsis">
 
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                    <a class="link" href="gst-entrans-plugins-unsharp.html#GstUnsharp-struct" title="GstUnsharp">GstUnsharp</a>;
 
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</pre>
 
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</div>
 
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<div class="refsect1" lang="en">
 
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<a name="gst-entrans-plugins-unsharp.object-hierarchy"></a><h2>Object Hierarchy</h2>
 
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<pre class="synopsis">
 
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  <a
 
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href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject"
 
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>GObject</a>
 
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   +----GstObject
 
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         +----GstElement
 
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               +----GstBaseTransform
 
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                     +----<a
 
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href="/usr/share/gtk-doc/html/gst-plugins-base-libs-0.10/gst-plugins-base-libs-gstvideofilter.html#GstVideoFilter"
 
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>GstVideoFilter</a>
 
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                           +----GstUnsharp
 
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</pre>
 
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</div>
 
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<div class="refsect1" lang="en">
 
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<a name="gst-entrans-plugins-unsharp.properties"></a><h2>Properties</h2>
 
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<pre class="synopsis">
 
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  "<a class="link" href="gst-entrans-plugins-unsharp.html#GstUnsharp--amount" title='The "amount" property'>amount</a>"                   <a
 
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href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"
 
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>gdouble</a>               : Read / Write
 
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  "<a class="link" href="gst-entrans-plugins-unsharp.html#GstUnsharp--chroma-amount" title='The "chroma-amount" property'>chroma-amount</a>"            <a
 
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href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"
 
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>gdouble</a>               : Read / Write
 
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  "<a class="link" href="gst-entrans-plugins-unsharp.html#GstUnsharp--chroma-matrix" title='The "chroma-matrix" property'>chroma-matrix</a>"            <a
 
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href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"
 
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>guint</a>                 : Read / Write
 
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  "<a class="link" href="gst-entrans-plugins-unsharp.html#GstUnsharp--matrix" title='The "matrix" property'>matrix</a>"                   <a
 
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href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"
 
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>guint</a>                 : Read / Write
 
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</pre>
 
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</div>
 
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<div class="refsect1" lang="en">
 
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<a name="gst-entrans-plugins-unsharp.description"></a><h2>Description</h2>
 
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<p>
 
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</p>
 
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<div class="refsect2" lang="en">
 
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<a name="id561893"></a><h3>History</h3>
 
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<p>
 
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This filter blurs or sharpens an image depending on the sign of
 
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<a class="link" href="gst-entrans-plugins-unsharp.html#GstUnsharp--amount" title='The "amount" property'>amount</a>. You can either
 
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set amount for both luma and chroma or you can set it individually
 
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(recommended), which will be the case if
 
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<a class="link" href="gst-entrans-plugins-unsharp.html#GstUnsharp--chroma-amount" title='The "chroma-amount" property'>chroma-amount</a>
 
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provides a valid (amount) value as override.
 
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A positive value for amount will sharpen the image, a negative
 
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value will blur it. A sane range for amount is -1.5 to 1.5.
 
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</p>
 
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<p>
 
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The (square) <a class="link" href="gst-entrans-plugins-unsharp.html#GstUnsharp--chroma-matrix" title='The "chroma-matrix" property'>matrix</a>
 
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(and possible override
 
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<a class="link" href="gst-entrans-plugins-unsharp.html#GstUnsharp--chroma-matrix" title='The "chroma-matrix" property'>chroma-matrix</a>) sizes
 
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must be odd and define the range/strength of the effect.
 
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Sensible ranges are 3x3 to 7x7.
 
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</p>
 
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<p>
 
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It sometimes  makes  sense  to  sharpen  the sharpen the luma
 
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and to blur the chroma, for example:
 
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</p>
 
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<pre class="programlisting">
 
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unsharp luma=0.8 matrix=5 chroma_amount=-0.2 chroma_matrix=3
 
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</pre>
 
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<p>
 
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</p>
 
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<p>
 
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</p>
 
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<div class="itemizedlist"><ul type="disc">
 
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<li>
 
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mplayer unsharp filter [Rémi Guyomarch]
 
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</li>
 
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<li>
 
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Also available in transcode (unsharp filter)
 
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</li>
 
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</ul></div>
 
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<p>
 
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</p>
 
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</div>
 
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<div class="refsect2" lang="en">
 
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<a name="id561960"></a><h3>Element Information</h3>
 
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<div class="variablelist"><table border="0">
 
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<col align="left" valign="top">
 
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<tbody>
 
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<tr>
 
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<td><p><span class="term">plugin</span></p></td>
 
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<td>
 
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          <a class="link" href="gst-entrans-plugins-plugin-mencoder.html#plugin-mencoder">mencoder</a>
 
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        </td>
 
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</tr>
 
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<tr>
 
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<td><p><span class="term">author</span></p></td>
 
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<td>Mark Nauwelaerts &lt;mnauw@users.sourceforge.net&gt;,
 
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    Rémi Guyomarch</td>
 
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</tr>
 
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<tr>
 
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<td><p><span class="term">class</span></p></td>
 
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<td>Filter/Effect/Video</td>
 
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</tr>
 
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</tbody>
 
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</table></div>
 
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</div>
 
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<p>
 
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</p>
 
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</div>
 
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<div class="refsect1" lang="en">
 
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<a name="gst-entrans-plugins-unsharp.details"></a><h2>Details</h2>
 
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<div class="refsect2" lang="en">
 
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<a name="GstUnsharp-struct"></a><h3>GstUnsharp</h3>
 
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<pre class="programlisting">typedef struct _GstUnsharp GstUnsharp;</pre>
 
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<p>
 
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</p>
 
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</div>
 
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</div>
 
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<div class="refsect1" lang="en">
 
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<a name="gst-entrans-plugins-unsharp.property-details"></a><h2>Property Details</h2>
 
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<div class="refsect2" lang="en">
 
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<a name="GstUnsharp--amount"></a><h3>The <code class="literal">"amount"</code> property</h3>
 
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<pre class="programlisting">  "amount"                   <a
 
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href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"
 
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>gdouble</a>               : Read / Write</pre>
 
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<p>[luma and chroma] (Un)sharpness amount.</p>
 
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<p>Allowed values: [-2,2]</p>
 
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<p>Default value: 1</p>
 
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</div>
 
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<hr>
 
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<div class="refsect2" lang="en">
 
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<a name="GstUnsharp--chroma-amount"></a><h3>The <code class="literal">"chroma-amount"</code> property</h3>
 
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<pre class="programlisting">  "chroma-amount"            <a
 
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href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"
 
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>gdouble</a>               : Read / Write</pre>
 
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<p>[chroma override] (Un)sharpness amount.</p>
 
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<p>Allowed values: [-4,2]</p>
 
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<p>Default value: 1</p>
 
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</div>
 
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<hr>
 
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<div class="refsect2" lang="en">
 
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<a name="GstUnsharp--chroma-matrix"></a><h3>The <code class="literal">"chroma-matrix"</code> property</h3>
 
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<pre class="programlisting">  "chroma-matrix"            <a
 
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href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"
 
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>guint</a>                 : Read / Write</pre>
 
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<p>[chroma override] Search Matrix Size.</p>
 
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<p>Allowed values: &lt;= 63</p>
 
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<p>Default value: 3</p>
 
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</div>
 
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<hr>
 
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<div class="refsect2" lang="en">
 
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<a name="GstUnsharp--matrix"></a><h3>The <code class="literal">"matrix"</code> property</h3>
 
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<pre class="programlisting">  "matrix"                   <a
 
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href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"
 
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>guint</a>                 : Read / Write</pre>
 
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<p>[luma and chroma] Search Matrix Size.</p>
 
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<p>Allowed values: [3,63]</p>
 
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<p>Default value: 3</p>
 
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</div>
 
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</div>
 
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</div>
 
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<div class="footer">
 
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<hr>
 
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          Generated by GTK-Doc V1.11</div>
 
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</body>
 
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</html>