class_docstr: Apply ``x = (x - mean) * contrast_factor + mean`` to each channel.
class_docstr_tok: ["Apply","``","x","=","(","x","-","mean",")","*","contrast_factor","+","mean","``","to","each","channel","."]
code: def _get_augment_params(self, _):
      return self._rand_range(*self.factor_range)
  
imports: import numpy
  import cv2
  from ...utils.develop import log_deprecated
  from .base import PhotometricAugmentor
label_desc: Use image node_id 2 for calling the Contrast obj's underlying member method code with example usage: obj._get_augment_params(_) and returns: self