code: def init_op(self):
      self.ocr_reader = OCRReader(
          char_dict_path="../../ppocr/utils/ppocr_keys_v1.txt"
      )
  
file_path: PaddleOCR/deploy/pdserving/web_service_rec.py
imports: from paddle_serving_server.web_service import WebService, Op
  import logging
  import numpy
  import cv2
  import base64
  from ocr_reader import OCRReader, DetResizeForTest, ArgsParser
  from paddle_serving_app.reader import Sequential, ResizeByFactor
  from paddle_serving_app.reader import Div, Normalize, Transpose
label_desc: Use image node_id 1 for calling the RecOp obj's underlying member method code with example usage: obj.init_op() without return types