code: def base64_to_cv2(b64str):
      data = base64.b64decode(b64str.encode("utf8"))
      data = np.frombuffer(data, np.uint8)
      data = cv2.imdecode(data, cv2.IMREAD_COLOR)
      return data
  
imports: import argparse
  import base64
  import os
  import time
  from typing import Dict
  from typing import List
  from typing import Union
  import cv2
  import numpy
  import paddle
  import paddle.vision.transforms
  from paddlenlp.transformers.clip.tokenizer import CLIPTokenizer
  import paddlehub
  from .None import models
  from paddlehub.module.module import moduleinfo
  from paddlehub.module.module import runnable
  from paddlehub.module.module import serving
label_desc: Use image node_id 2 for calling a global function with example usage: base64_to_cv2(b64str) and returns: data