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<div class="subTitle">org.opencv.core</div>
<h2 title="Class KeyPoint" class="title">Class KeyPoint</h2>
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<li>java.lang.Object</li>
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<li>org.opencv.core.KeyPoint</li>
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<pre>public class <span class="typeNameLabel">KeyPoint</span>
extends java.lang.Object</pre>
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<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#angle">angle</a></span></code>
<div class="block">Computed orientation of the keypoint (-1 if not applicable).</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#class_id">class_id</a></span></code>
<div class="block">Object ID, that can be used to cluster keypoints by an object they
 belong to.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#octave">octave</a></span></code>
<div class="block">Octave (pyramid layer), from which the keypoint has been extracted.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/opencv/core/Point.html" title="class in org.opencv.core">Point</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#pt">pt</a></span></code>
<div class="block">Coordinates of the keypoint.</div>
</td>
</tr>
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<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#response">response</a></span></code>
<div class="block">The response, by which the strongest keypoints have been selected.</div>
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<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#size">size</a></span></code>
<div class="block">Diameter of the useful keypoint adjacent area.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#KeyPoint--">KeyPoint</a></span>()</code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#KeyPoint-float-float-float-">KeyPoint</a></span>(float&nbsp;x,
        float&nbsp;y,
        float&nbsp;_size)</code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#KeyPoint-float-float-float-float-">KeyPoint</a></span>(float&nbsp;x,
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        float&nbsp;_size,
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#KeyPoint-float-float-float-float-float-">KeyPoint</a></span>(float&nbsp;x,
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        float&nbsp;_size,
        float&nbsp;_angle,
        float&nbsp;_response)</code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#KeyPoint-float-float-float-float-float-int-">KeyPoint</a></span>(float&nbsp;x,
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        float&nbsp;_size,
        float&nbsp;_angle,
        float&nbsp;_response,
        int&nbsp;_octave)</code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/opencv/core/KeyPoint.html#KeyPoint-float-float-float-float-float-int-int-">KeyPoint</a></span>(float&nbsp;x,
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        float&nbsp;_angle,
        float&nbsp;_response,
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<td class="colFirst"><code>java.lang.String</code></td>
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<h4>angle</h4>
<pre>public&nbsp;float angle</pre>
<div class="block">Computed orientation of the keypoint (-1 if not applicable).</div>
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<h4>class_id</h4>
<pre>public&nbsp;int class_id</pre>
<div class="block">Object ID, that can be used to cluster keypoints by an object they
 belong to.</div>
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<a name="octave">
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<h4>octave</h4>
<pre>public&nbsp;int octave</pre>
<div class="block">Octave (pyramid layer), from which the keypoint has been extracted.</div>
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<h4>pt</h4>
<pre>public&nbsp;<a href="../../../org/opencv/core/Point.html" title="class in org.opencv.core">Point</a> pt</pre>
<div class="block">Coordinates of the keypoint.</div>
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<h4>response</h4>
<pre>public&nbsp;float response</pre>
<div class="block">The response, by which the strongest keypoints have been selected. Can
 be used for further sorting or subsampling.</div>
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<h4>size</h4>
<pre>public&nbsp;float size</pre>
<div class="block">Diameter of the useful keypoint adjacent area.</div>
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<h4>KeyPoint</h4>
<pre>public&nbsp;KeyPoint()</pre>
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<h4>KeyPoint</h4>
<pre>public&nbsp;KeyPoint(float&nbsp;x,
                float&nbsp;y,
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<h4>KeyPoint</h4>
<pre>public&nbsp;KeyPoint(float&nbsp;x,
                float&nbsp;y,
                float&nbsp;_size,
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<pre>public&nbsp;KeyPoint(float&nbsp;x,
                float&nbsp;y,
                float&nbsp;_size,
                float&nbsp;_angle,
                float&nbsp;_response)</pre>
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<pre>public&nbsp;KeyPoint(float&nbsp;x,
                float&nbsp;y,
                float&nbsp;_size,
                float&nbsp;_angle,
                float&nbsp;_response,
                int&nbsp;_octave)</pre>
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<pre>public&nbsp;KeyPoint(float&nbsp;x,
                float&nbsp;y,
                float&nbsp;_size,
                float&nbsp;_angle,
                float&nbsp;_response,
                int&nbsp;_octave,
                int&nbsp;_class_id)</pre>
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<pre>public&nbsp;java.lang.String&nbsp;toString()</pre>
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