class_docstr: Convert image to float32, may increase quality of the augmentor. 
class_docstr_tok: ["Convert","image","to","float32",",","may","increase","quality","of","the","augmentor","."]
code: def _augment(self, img, _):
      return img.astype(np.float32)
  
file_path: tensorpack/tensorpack/dataflow/imgaug/convert.py
imports: import numpy
  import cv2
  from .base import PhotometricAugmentor
label_desc: Use image node_id 1 for calling the ToFloat32 obj's underlying member method code with example usage: obj._augment(img, _) and returns: img