code: def normalize_image(img, dmin, dmax):
      result = img.copy()
      result = nd.clip(img, dmin, dmax)
      result = (result - dmin) / (dmax - dmin + 1e-5)
  
      return result
  
file_path: gluon-cv/scripts/gan/stylegan/demo_stylegan.py
imports: import argparse
  import math
  import os
  import numpy
  from tqdm import tqdm
  from PIL import Image
  import mxnet
  import mxnet.ndarray
  from model import StyledGenerator
label_desc: Use image node_id 3 for calling a global function with example usage: normalize_image(img, dmin, dmax) and returns: result