internal static extern void cv_features2d_drawMatches( Arr img1, KeyPointCollection keypoints1, Arr img2, KeyPointCollection keypoints2, DMatchCollection matches1to2, Arr outImg, Scalar matchColor, Scalar singlePointColor, ByteCollection matchesMask, DrawMatchesFlags flags);
internal static extern void cv_features2d_DescriptorMatcher_match( DescriptorMatcher matcher, Arr queryDescriptors, Arr trainDescriptors, DMatchCollection matches, Arr mask);
internal static extern void cv_vector_DMatch_copy(DMatchCollection vector, [Out] DMatch[] data);
internal static extern IntPtr cv_vector_DMatch_iterator_new(DMatchCollection vector);
internal static extern IntPtr cv_vector_DMatch_size(DMatchCollection vector);