code: def get_standardize(mean, std):
      """Standardize an image with the given mean and standard deviation."""
  
      def _standardize(image):
          image = tf.cast(image, dtype=tf.float32)
          return (image - mean) / std
  
      return _standardize
  
imports: from typing import Optional, Tuple
  import numpy
  from scenic.dataset_lib.big_transfer.preprocessing import autoaugment
  from scenic.dataset_lib.big_transfer.preprocessing import utils
  from scenic.dataset_lib.big_transfer.registry import Registry
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_addons import image
label_desc: Use image node_id 27 for calling a global function with example usage: get_standardize(mean, std) and returns: _standardize, unknown