docstr: Normalize image values to be between 0 and 255
  :param image: 2D/3D array containing an image with arbitrary values
  :return: the input image with values rescaled to 0-255
code: def normalize_image(self, image):
      """
      Normalize image values to be between 0 and 255
      :param image: 2D/3D array containing an image with arbitrary values
      :return: the input image with values rescaled to 0-255
      """
      image_min, image_max = image.min(), image.max()
      return 255.0 * (image - image_min) / (image_max - image_min)
  
file_path: coach/rl_coach/renderer.py
imports: import numpy
  import contextlib
  from pygame.locals import HWSURFACE, DOUBLEBUF
label_desc: Use image node_id 3 for calling the Renderer obj's underlying member method code with example usage: obj.normalize_image(image) and returns: unknown