knnMatch          501 modules/cudafeatures2d/src/brute_force_matcher.cpp     void BFMatcher_Impl::knnMatch(InputArray _queryDescriptors, InputArray _trainDescriptors,
knnMatch          512 modules/cudafeatures2d/src/brute_force_matcher.cpp     void BFMatcher_Impl::knnMatch(InputArray _queryDescriptors,
knnMatch          571 modules/features2d/src/matchers.cpp void DescriptorMatcher::knnMatch( InputArray queryDescriptors, InputArray trainDescriptors,
knnMatch          619 modules/features2d/src/matchers.cpp void DescriptorMatcher::knnMatch( InputArray queryDescriptors, std::vector<std::vector<DMatch> >& matches, int knn,