code: def corners_to_keypoints(corners):
      """function to take the corners from cv2.GoodFeaturesToTrack and return cv2.KeyPoints"""
      if corners is None:
          keypoints = []
      else:
          keypoints = [
              cv2.KeyPoint(kp[0][0], kp[0][1], 1) for kp in corners
          ]
  
      return keypoints
  
label_desc: Use image node_id 1 for calling a global function with example usage: corners_to_keypoints(corners) and returns: keypoints