1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>edgedetect: GStreamer Bad Plugins 1.0 Plugins Reference Manual</title> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="index.html" title="GStreamer Bad Plugins 1.0 Plugins Reference Manual"> 8<link rel="up" href="ch01.html" title="gst-plugins-bad Elements"> 9<link rel="prev" href="gst-plugins-bad-plugins-dvdspu.html" title="dvdspu"> 10<link rel="next" href="gst-plugins-bad-plugins-errorignore.html" title="errorignore"> 11<meta name="generator" content="GTK-Doc V1.28 (XML mode)"> 12<link rel="stylesheet" href="style.css" type="text/css"> 13</head> 14<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 15<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> 16<td width="100%" align="left" class="shortcuts"> 17<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> 18 <a href="#gst-plugins-bad-plugins-edgedetect.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 19 <a href="#gst-plugins-bad-plugins-edgedetect.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties"> <span class="dim">|</span> 20 <a href="#gst-plugins-bad-plugins-edgedetect.properties" class="shortcut">Properties</a></span> 21</td> 22<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> 23<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> 24<td><a accesskey="p" href="gst-plugins-bad-plugins-dvdspu.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> 25<td><a accesskey="n" href="gst-plugins-bad-plugins-errorignore.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 26</tr></table> 27<div class="refentry"> 28<a name="gst-plugins-bad-plugins-edgedetect"></a><div class="titlepage"></div> 29<div class="refnamediv"><table width="100%"><tr> 30<td valign="top"> 31<h2><span class="refentrytitle"><a name="gst-plugins-bad-plugins-edgedetect.top_of_page"></a>edgedetect</span></h2> 32<p>edgedetect</p> 33</td> 34<td class="gallery_image" valign="top" align="right"></td> 35</tr></table></div> 36<div class="refsect1"> 37<a name="gst-plugins-bad-plugins-edgedetect.properties"></a><h2>Properties</h2> 38<div class="informaltable"><table class="informaltable" border="0"> 39<colgroup> 40<col width="150px" class="properties_type"> 41<col width="300px" class="properties_name"> 42<col width="200px" class="properties_flags"> 43</colgroup> 44<tbody> 45<tr> 46<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> 47<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-edgedetect.html#GstEdgeDetect--aperture" title="The “aperture” property">aperture</a></td> 48<td class="property_flags">Read / Write</td> 49</tr> 50<tr> 51<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> 52<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-edgedetect.html#GstEdgeDetect--mask" title="The “mask” property">mask</a></td> 53<td class="property_flags">Read / Write</td> 54</tr> 55<tr> 56<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> 57<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-edgedetect.html#GstEdgeDetect--threshold1" title="The “threshold1” property">threshold1</a></td> 58<td class="property_flags">Read / Write</td> 59</tr> 60<tr> 61<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> 62<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-edgedetect.html#GstEdgeDetect--threshold2" title="The “threshold2” property">threshold2</a></td> 63<td class="property_flags">Read / Write</td> 64</tr> 65</tbody> 66</table></div> 67</div> 68<a name="GstEdgeDetect"></a><div class="refsect1"> 69<a name="gst-plugins-bad-plugins-edgedetect.other"></a><h2>Types and Values</h2> 70<div class="informaltable"><table class="informaltable" width="100%" border="0"> 71<colgroup> 72<col width="150px" class="name"> 73<col class="description"> 74</colgroup> 75<tbody><tr> 76<td class="datatype_keyword">struct</td> 77<td class="function_name"><a class="link" href="gst-plugins-bad-plugins-edgedetect.html#GstEdgeDetect-struct" title="struct GstEdgeDetect">GstEdgeDetect</a></td> 78</tr></tbody> 79</table></div> 80</div> 81<div class="refsect1"> 82<a name="gst-plugins-bad-plugins-edgedetect.object-hierarchy"></a><h2>Object Hierarchy</h2> 83<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 84 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 85 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 86 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 87 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseTransform.html#GstBaseTransform-struct">GstBaseTransform</a> 88 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gst-plugins-base-libs-1.0/GstVideoFilter.html#GstVideoFilter-struct">GstVideoFilter</a> 89 <span class="lineart">╰──</span> GstOpencvVideoFilter 90 <span class="lineart">╰──</span> GstEdgeDetect 91</pre> 92</div> 93<div class="refsect1"> 94<a name="gst-plugins-bad-plugins-edgedetect.description"></a><h2>Description</h2> 95<p>Performs canny edge detection on videos and images</p> 96<div class="refsect2"> 97<a name="id-1.2.77.7.3"></a><h3>Example launch line</h3> 98<div class="informalexample"> 99 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 100 <tbody> 101 <tr> 102 <td class="listing_lines" align="right"><pre>1</pre></td> 103 <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> videotestsrc <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> edgedetect <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> xvimagesink</pre></td> 104 </tr> 105 </tbody> 106 </table> 107</div> 108 109</div> 110<div class="refsynopsisdiv"> 111<h2>Synopsis</h2> 112<div class="refsect2"> 113<a name="id-1.2.77.7.4.1"></a><h3>Element Information</h3> 114<div class="variablelist"><table border="0" class="variablelist"> 115<colgroup> 116<col align="left" valign="top"> 117<col> 118</colgroup> 119<tbody> 120<tr> 121<td><p><span class="term">plugin</span></p></td> 122<td> 123 <a class="link" href="gst-plugins-bad-plugins-plugin-opencv.html#plugin-opencv">opencv</a> 124 </td> 125</tr> 126<tr> 127<td><p><span class="term">author</span></p></td> 128<td>Michael Sheldon <mike@mikeasoft.com></td> 129</tr> 130<tr> 131<td><p><span class="term">class</span></p></td> 132<td>Filter/Effect/Video</td> 133</tr> 134</tbody> 135</table></div> 136</div> 137<hr> 138<div class="refsect2"> 139<a name="id-1.2.77.7.4.2"></a><h3>Element Pads</h3> 140<div class="variablelist"><table border="0" class="variablelist"> 141<colgroup> 142<col align="left" valign="top"> 143<col> 144</colgroup> 145<tbody> 146<tr> 147<td><p><span class="term">name</span></p></td> 148<td>sink</td> 149</tr> 150<tr> 151<td><p><span class="term">direction</span></p></td> 152<td>sink</td> 153</tr> 154<tr> 155<td><p><span class="term">presence</span></p></td> 156<td>always</td> 157</tr> 158<tr> 159<td><p><span class="term">details</span></p></td> 160<td>video/x-raw, format=(string)RGB, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 161</tr> 162</tbody> 163</table></div> 164<div class="variablelist"><table border="0" class="variablelist"> 165<colgroup> 166<col align="left" valign="top"> 167<col> 168</colgroup> 169<tbody> 170<tr> 171<td><p><span class="term">name</span></p></td> 172<td>src</td> 173</tr> 174<tr> 175<td><p><span class="term">direction</span></p></td> 176<td>source</td> 177</tr> 178<tr> 179<td><p><span class="term">presence</span></p></td> 180<td>always</td> 181</tr> 182<tr> 183<td><p><span class="term">details</span></p></td> 184<td>video/x-raw, format=(string)RGB, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 185</tr> 186</tbody> 187</table></div> 188</div> 189</div> 190</div> 191<div class="refsect1"> 192<a name="gst-plugins-bad-plugins-edgedetect.functions_details"></a><h2>Functions</h2> 193<p></p> 194</div> 195<div class="refsect1"> 196<a name="gst-plugins-bad-plugins-edgedetect.other_details"></a><h2>Types and Values</h2> 197<div class="refsect2"> 198<a name="GstEdgeDetect-struct"></a><h3>struct GstEdgeDetect</h3> 199<pre class="programlisting">struct GstEdgeDetect;</pre> 200</div> 201</div> 202<div class="refsect1"> 203<a name="gst-plugins-bad-plugins-edgedetect.property-details"></a><h2>Property Details</h2> 204<div class="refsect2"> 205<a name="GstEdgeDetect--aperture"></a><h3>The <code class="literal">“aperture”</code> property</h3> 206<pre class="programlisting"> “aperture” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 207<p>Aperture size for Sobel operator (Must be either 3, 5 or 7.</p> 208<p>Flags: Read / Write</p> 209<p>Allowed values: [3,7]</p> 210<p>Default value: 3</p> 211</div> 212<hr> 213<div class="refsect2"> 214<a name="GstEdgeDetect--mask"></a><h3>The <code class="literal">“mask”</code> property</h3> 215<pre class="programlisting"> “mask” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> 216<p>Sets whether the detected edges should be used as a mask on the original input or not.</p> 217<p>Flags: Read / Write</p> 218<p>Default value: TRUE</p> 219</div> 220<hr> 221<div class="refsect2"> 222<a name="GstEdgeDetect--threshold1"></a><h3>The <code class="literal">“threshold1”</code> property</h3> 223<pre class="programlisting"> “threshold1” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 224<p>Threshold value for canny edge detection.</p> 225<p>Flags: Read / Write</p> 226<p>Allowed values: [0,1000]</p> 227<p>Default value: 50</p> 228</div> 229<hr> 230<div class="refsect2"> 231<a name="GstEdgeDetect--threshold2"></a><h3>The <code class="literal">“threshold2”</code> property</h3> 232<pre class="programlisting"> “threshold2” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 233<p>Second threshold value for canny edge detection.</p> 234<p>Flags: Read / Write</p> 235<p>Allowed values: [0,1000]</p> 236<p>Default value: 150</p> 237</div> 238</div> 239</div> 240<div class="footer"> 241<hr>Generated by GTK-Doc V1.28</div> 242</body> 243</html>
