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<div class="subTitle">org.opencv.features2d</div>
<h2 title="Class DescriptorExtractor" class="title">Class DescriptorExtractor</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li>org.opencv.features2d.DescriptorExtractor</li>
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<pre>public class <span class="typeNameLabel">DescriptorExtractor</span>
extends java.lang.Object</pre>
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<!-- =========== FIELD SUMMARY =========== -->
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<h3>Field Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#AKAZE">AKAZE</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#BRIEF">BRIEF</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#BRISK">BRISK</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#FREAK">FREAK</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#OPPONENT_AKAZE">OPPONENT_AKAZE</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#OPPONENT_BRIEF">OPPONENT_BRIEF</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#OPPONENT_BRISK">OPPONENT_BRISK</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#OPPONENT_FREAK">OPPONENT_FREAK</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#OPPONENT_ORB">OPPONENT_ORB</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#OPPONENT_SIFT">OPPONENT_SIFT</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#OPPONENT_SURF">OPPONENT_SURF</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#ORB">ORB</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#SIFT">SIFT</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#SURF">SURF</a></span></code>&nbsp;</td>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#compute-java.util.List-java.util.List-java.util.List-">compute</a></span>(java.util.List&lt;<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&gt;&nbsp;images,
       java.util.List&lt;<a href="../../../org/opencv/core/MatOfKeyPoint.html" title="class in org.opencv.core">MatOfKeyPoint</a>&gt;&nbsp;keypoints,
       java.util.List&lt;<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&gt;&nbsp;descriptors)</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#compute-org.opencv.core.Mat-org.opencv.core.MatOfKeyPoint-org.opencv.core.Mat-">compute</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;image,
       <a href="../../../org/opencv/core/MatOfKeyPoint.html" title="class in org.opencv.core">MatOfKeyPoint</a>&nbsp;keypoints,
       <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;descriptors)</code>&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="../../../org/opencv/features2d/DescriptorExtractor.html" title="class in org.opencv.features2d">DescriptorExtractor</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#create-int-">create</a></span>(int&nbsp;extractorType)</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#descriptorSize--">descriptorSize</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#descriptorType--">descriptorType</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#empty--">empty</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#read-java.lang.String-">read</a></span>(java.lang.String&nbsp;fileName)</code>&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/features2d/DescriptorExtractor.html#write-java.lang.String-">write</a></span>(java.lang.String&nbsp;fileName)</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<pre>public static final&nbsp;int AKAZE</pre>
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<pre>public static final&nbsp;int BRIEF</pre>
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<pre>public static final&nbsp;int BRISK</pre>
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<pre>public static final&nbsp;int FREAK</pre>
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<pre>public static final&nbsp;int OPPONENT_AKAZE</pre>
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<pre>public static final&nbsp;int OPPONENT_BRIEF</pre>
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<pre>public static final&nbsp;int OPPONENT_BRISK</pre>
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<pre>public static final&nbsp;int OPPONENT_FREAK</pre>
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<pre>public static final&nbsp;int OPPONENT_ORB</pre>
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<pre>public static final&nbsp;int OPPONENT_SIFT</pre>
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<pre>public static final&nbsp;int OPPONENT_SURF</pre>
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<pre>public static final&nbsp;int ORB</pre>
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<pre>public static final&nbsp;int SIFT</pre>
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<pre>public static final&nbsp;int SURF</pre>
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<h4>compute</h4>
<pre>public&nbsp;void&nbsp;compute(java.util.List&lt;<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&gt;&nbsp;images,
                    java.util.List&lt;<a href="../../../org/opencv/core/MatOfKeyPoint.html" title="class in org.opencv.core">MatOfKeyPoint</a>&gt;&nbsp;keypoints,
                    java.util.List&lt;<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&gt;&nbsp;descriptors)</pre>
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<h4>compute</h4>
<pre>public&nbsp;void&nbsp;compute(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;image,
                    <a href="../../../org/opencv/core/MatOfKeyPoint.html" title="class in org.opencv.core">MatOfKeyPoint</a>&nbsp;keypoints,
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<pre>public static&nbsp;<a href="../../../org/opencv/features2d/DescriptorExtractor.html" title="class in org.opencv.features2d">DescriptorExtractor</a>&nbsp;create(int&nbsp;extractorType)</pre>
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<pre>public&nbsp;int&nbsp;descriptorSize()</pre>
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