internal static extern void cv_features2d_KeyPoint_convert_vector_Point2f( Point2fCollection points2f, KeyPointCollection keypoints, float size, float response, int octave, int class_id);
internal static extern void cv_features2d_KeyPoint_convert_vector_KeyPoint( KeyPointCollection keypoints, Point2fCollection points2f, Int32Collection keypointIndexes);
internal static extern void cv_vector_Point2f_copy(Point2fCollection vector, [Out] Point2f[] data);
internal static extern IntPtr cv_vector_Point2f_iterator_new(Point2fCollection vector);
internal static extern IntPtr cv_vector_Point2f_size(Point2fCollection vector);