/// <summary>
///
/// </summary>
/// <param name="roi"></param>
/// <returns></returns>
public Mat SubMat(Rect roi)
{
throw new NotImplementedException();
//Mat retVal = new Mat(n_submat(ptr, roi.X, roi.Y, roi.Width, roi.Height));
//return retVal;
}
/// <summary>
///
/// </summary>
/// <param name="m"></param>
/// <param name="roi"></param>
public Mat(Mat m, Rect roi)
{
ptr = CppInvoke.core_Mat_new(m.ptr, roi);
}