class_docstr: A base class for ImageAugmentor which only affects pixels.
  
  Subclass should implement `_get_params(img)` and `_impl(img, params)`.
class_docstr_tok: ["A","base","class","for","ImageAugmentor","which","only","affects","pixels",".","Subclass","should","implement","`","_get_params","(","img",")","`","and","`","_impl","(","img",",","params",")","`","."]
code: def _get_augment_params(self, _):
      return None
  
imports: import os
  import inspect
  import pprint
  from collections import namedtuple
  import weakref
  from ...utils.argtools import log_once
  from ...utils.utils import get_rng
  from ...utils.develop import deprecated
  from ..image import check_dtype
label_desc: Use image node_id 2 for calling the PhotometricAugmentor obj's underlying member method code with example usage: obj._get_augment_params(_) and returns: None