code: def brightness(image, variance):
      alpha = (
          1
          + tf.random.uniform(
              [1], dtype=tf.float32, minval=-variance, maxval=variance
          )[0]
      )
      return image * alpha
  
imports: import functools
  import cv2
  import numpy
  import tensorflow
  from tensorflow_graphics.projects.points_to_3Dobjects.utils import image
  from google3.third_party.tensorflow_models.object_detection.core import preprocessor
label_desc: Use image node_id 3 for calling a global function with example usage: brightness(image, variance) and returns: unknown