code: def _centroid(tracked_points: np.ndarray) -> Tuple[int, int]:
      num_points = tracked_points.shape[0]
      sum_x = np.sum(tracked_points[:, 0])
      sum_y = np.sum(tracked_points[:, 1])
      return int(sum_x / num_points), int(sum_y / num_points)
  
label_desc: Use image node_id 1 for calling a global function with example usage: _centroid(tracked_points) and returns: int,  int