code: def lighting(
      image,
      alpha_std=0.1,
      eigval=LIGHTING_EIGVAL,
      eigvec=LIGHTING_EIGVEC,
  ):
      alpha = tf.random.normal([3], stddev=alpha_std, dtype=tf.float32)
      return image + tf.tensordot(
          tf.constant(eigvec),
          tf.constant(eigval) * alpha,
          axes=((1,), (0,)),
      )
  
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 6 for calling a global function with example usage: lighting(image, alpha_std, eigval, eigvec) and returns: unknown