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<div class="subTitle">org.opencv.video</div>
<h2 title="Class SparseOpticalFlow" class="title">Class SparseOpticalFlow</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
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<li><a href="../../../org/opencv/core/Algorithm.html" title="class in org.opencv.core">org.opencv.core.Algorithm</a></li>
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<li>org.opencv.video.SparseOpticalFlow</li>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../org/opencv/video/SparsePyrLKOpticalFlow.html" title="class in org.opencv.video">SparsePyrLKOpticalFlow</a></dd>
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<pre>public class <span class="typeNameLabel">SparseOpticalFlow</span>
extends <a href="../../../org/opencv/core/Algorithm.html" title="class in org.opencv.core">Algorithm</a></pre>
<div class="block">Base interface for sparse optical flow algorithms.</div>
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<td class="colFirst"><code>static <a href="../../../org/opencv/video/SparseOpticalFlow.html" title="class in org.opencv.video">SparseOpticalFlow</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/video/SparseOpticalFlow.html#Z:Z__fromPtr__-long-">__fromPtr__</a></span>(long&nbsp;addr)</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/video/SparseOpticalFlow.html#calc-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-">calc</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;prevImg,
    <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;nextImg,
    <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;prevPts,
    <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;nextPts,
    <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;status)</code>
<div class="block">Calculates a sparse optical flow.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/video/SparseOpticalFlow.html#calc-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-">calc</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;prevImg,
    <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;nextImg,
    <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;prevPts,
    <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;nextPts,
    <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;status,
    <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;err)</code>
<div class="block">Calculates a sparse optical flow.</div>
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<code><a href="../../../org/opencv/core/Algorithm.html#clear--">clear</a>, <a href="../../../org/opencv/core/Algorithm.html#empty--">empty</a>, <a href="../../../org/opencv/core/Algorithm.html#getDefaultName--">getDefaultName</a>, <a href="../../../org/opencv/core/Algorithm.html#getNativeObjAddr--">getNativeObjAddr</a>, <a href="../../../org/opencv/core/Algorithm.html#save-java.lang.String-">save</a></code></li>
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<h4>__fromPtr__</h4>
<pre>public static&nbsp;<a href="../../../org/opencv/video/SparseOpticalFlow.html" title="class in org.opencv.video">SparseOpticalFlow</a>&nbsp;__fromPtr__(long&nbsp;addr)</pre>
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<h4>calc</h4>
<pre>public&nbsp;void&nbsp;calc(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;prevImg,
                 <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;nextImg,
                 <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;prevPts,
                 <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;nextPts,
                 <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;status)</pre>
<div class="block">Calculates a sparse optical flow.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>prevImg</code> - First input image.</dd>
<dd><code>nextImg</code> - Second input image of the same size and the same type as prevImg.</dd>
<dd><code>prevPts</code> - Vector of 2D points for which the flow needs to be found.</dd>
<dd><code>nextPts</code> - Output vector of 2D points containing the calculated new positions of input features in the second image.</dd>
<dd><code>status</code> - Output status vector. Each element of the vector is set to 1 if the
                   flow for the corresponding features has been found. Otherwise, it is set to 0.</dd>
</dl>
</li>
</ul>
<a name="calc-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-">
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<h4>calc</h4>
<pre>public&nbsp;void&nbsp;calc(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;prevImg,
                 <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;nextImg,
                 <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;prevPts,
                 <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;nextPts,
                 <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;status,
                 <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;err)</pre>
<div class="block">Calculates a sparse optical flow.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>prevImg</code> - First input image.</dd>
<dd><code>nextImg</code> - Second input image of the same size and the same type as prevImg.</dd>
<dd><code>prevPts</code> - Vector of 2D points for which the flow needs to be found.</dd>
<dd><code>nextPts</code> - Output vector of 2D points containing the calculated new positions of input features in the second image.</dd>
<dd><code>status</code> - Output status vector. Each element of the vector is set to 1 if the
                   flow for the corresponding features has been found. Otherwise, it is set to 0.</dd>
<dd><code>err</code> - Optional output vector that contains error response for each point (inverse confidence).</dd>
</dl>
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<p class="legalCopy"><small>Generated on 2023-06-28 12:47:21 / OpenCV 4.8.0</small></p>
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