rain matrices of
     descriptors.</dd>
<dd><code>matches</code> - Matches. Each matches[i] is k or less matches for the same query descriptor.</dd>
<dd><code>k</code> - Count of best matches found per each query descriptor or less if a query descriptor has
     less than k possible matches in total.</dd>
<dd><code>compactResult</code> - Parameter used when the mask (or masks) is not empty. If compactResult is
     false, the matches vector has the same size as queryDescriptors rows. If compactResult is tru