//private IntPtr _sharedPtr;
/// <summary>
/// Create Hausdorff distance extractor
/// </summary>
/// <param name="distanceFlag">Rhe norm used to compute the Hausdorff value between two shapes. It can be L1 or L2 norm.</param>
/// <param name="rankProp">The rank proportion (or fractional value) that establish the Kth ranked value of the partial Hausdorff distance. Experimentally had been shown that 0.6 is a good value to compare shapes.</param>
public HausdorffDistanceExtractor(CvEnum.DistType distanceFlag = CvEnum.DistType.L2, float rankProp = 0.6f)
{
_ptr = ShapeInvoke.cveHausdorffDistanceExtractorCreate(distanceFlag, rankProp, ref _shapeDistanceExtractorPtr, ref _sharedPtr);
}