
<pre>public&nbsp;boolean&nbsp;isMaskSupported()</pre>
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<h4>knnMatch</h4>
<pre>public&nbsp;void&nbsp;knnMatch(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;queryDescriptors,
            java.util.List&lt;<a href="../../../org/opencv/core/MatOfDMatch.html" title="class in org.opencv.core">MatOfDMatch</a>&gt;&nbsp;matches,
          