code: def _sizes(batch: List[np.ndarray]):
      """Return list of tuples of image height and width."""
      return [get_size(img) for img in batch]
  
imports: from typing import Dict, List, Tuple
  import numpy
  from cv2 import CV_64F, Laplacian
  from skimage.color import rgb2gray
label_desc: Use image node_id 9 for calling a global function with example usage: _sizes(batch) and returns: unknown