class_docstr: Randomly adjust gamma 
class_docstr_tok: ["Randomly","adjust","gamma"]
docstr: Args:
      range(list or tuple): gamma range
code: def __init__(self, range=(-0.5, 0.5)):
      """
      Args:
          range(list or tuple): gamma range
      """
      super(Gamma, self).__init__()
      self._init(locals())
  
imports: import numpy
  import cv2
  from ...utils.develop import log_deprecated
  from .base import PhotometricAugmentor
label_desc: Use image node_id 1 to create a new Gamma object from inherited base classes: PhotometricAugmentor with example: obj = Gamma(range)