code: def autoinvert(image):
      assert np.amin(image) >= 0
      assert np.amax(image) <= 1
      if np.sum(image > 0.9) > np.sum(image < 0.1):
          return 1 - image
      else:
          return image
  
imports: import random
  from random import randint
  import numpy
  import cv2
label_desc: Use image node_id 1 for calling a global function with example usage: autoinvert(image) and returns: unknown, image