code: def face_detection(self, img):
      bounding_boxes, points = detect_face(
          img,
          self.minsize,
          self.pnet,
          self.rnet,
          self.onet,
          self.threshold,
          self.factor,
      )
      return bounding_boxes, points.reshape([2, -1]).T
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  import tensorflow
  import cv2
  import os
  import inspect
label_desc: Use image node_id 2 for calling the Face_Detector obj's underlying member method code with example usage: obj.face_detection(img) and returns: bounding_boxes,  points