text: import object_detection_api
  import os
  from PIL import Image
  from flask import Flask, request, Response
  
  app = Flask(__name__)
  
  # for CORS
  @app.after_request
  def after_request(response):
      response.headers.add('Access-Control-Allow-Origin', '*')
      response.headers.add('Access-Control-Allow-Headers', 'Content-Type,Authorization')
      response.headers.add('Access-Control-Allow-Methods', 'GET,POST') # Put any other methods you need here
      return response
  
  
  @app.route('/')
  def index():
      return Response('Tensor Flow object detection')
  
  
  @app.route('/local')
  def local():
      return Response(open('./static/local.html').read(), mimetype="text/html")
  
  
  @app.route('/video')
  def remote():
      return Response(open('./static/video.html').read(), mimetype="text/html")
  
  
  @app.route('/test')
  def test():
      PATH_TO_TEST_IMAGES_DIR = 'object_detection/test_images'  # cwh
      TEST_IMAGE_PATHS = [os.path.join(PATH_TO_TEST_IMAGES_DIR, 'image{}.jpg'.format(i)) for i in range(1, 3)]
  
      image = Image.open(TEST_IMAGE_PATHS[0])
      objects = object_detection_api.get_objects(image)
  
      return objects
  
  
  @app.route('/image', methods=['POST'])
  def image():
      try:
          image_file = request.files['image']  # get the image
  
          # Set an image confidence threshold value to limit returned data
          threshold = request.form.get('threshold')
          if threshold is None:
              threshold = 0.5
          else:
              threshold = float(threshold)
  
          # finally run the image through tensor flow object detection`
          image_object = Image.open(image_file)
          objects = object_detection_api.get_objects(image_object, threshold)
          return objects
  
      except Exception as e:
          print('POST /image error: %e' % e)
          return e
  
  
  if __name__ == '__main__':
  	# without SSL
      # may give ERR_SSL_PROTOCOL_ERROR
      app.run(debug=True, host='0.0.0.0')
  
  	# with SSL
      #app.run(debug=True, host='0.0.0.0', ssl_context=('ssl/server.crt', 'ssl/server.key'))
  