d&nbsp;knnMatch(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;queryDescriptors,
            <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;trainDescriptors,
            java.util.List&lt;<a href="../../../org/opencv/core/MatOfDMatch.html" title="class in org.opencv.core">MatOfDMatch</a>&gt;&nbsp;matches,
            int&nbsp;k,
            <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a