ry descriptor or less if a query descriptor has
     less than k possible matches in total.</dd>
<dd><code>masks</code> - Set of masks. Each masks[i] specifies permissible matches between the input query
     descriptors and stored train descriptors from the i-th image trainDescCollection[i].
     false, the matches vector has the same size as queryDescriptors rows. If compactResult is true,
     the matches vector does not contain matches for fully masked-out query descriptors.</dd>
</dl>
</li>
</ul>
<a na