class_docstr: Convert color space from LAB to RGB.
class_docstr_tok: ["Convert","color","space","from","LAB","to","RGB","."]
code: def __call__(self, img: np.ndarray) -> np.ndarray:
      return self.lab2rgb(img)
  
imports: import random
  from typing import Callable, Union, List, Tuple
  import cv2
  import PIL
  import numpy
  import paddlehub.vision.functional
label_desc: Use image node_id 5 for calling the LAB2RGB obj's underlying member method code with example usage: obj.__call__(img) and returns: self