Add Arxiv link to AutoAugment paper.

PiperOrigin-RevId: 374891049

research/object_detection/core/preprocessor.py

@@ -2888,10 +2888,12 @@ def random_patch_gaussian(image,
   return image
 
 
-# TODO(barretzoph): Put in AutoAugment Paper link when paper is live.
 def autoaugment_image(image, boxes, policy_name='v0'):
   """Apply an autoaugment policy to the image and boxes.
 
+  See "AutoAugment: Learning Augmentation Policies from Data" by Cubuk et al.,
+  2018, for further details. https://arxiv.org/abs/1805.09501
+
 
   Args:
     image: rank 3 float32 tensor contains 1 image -> [height, width, channels]