add latest jpg endpoint

detect_objects.py

@@ -359,7 +359,28 @@ def mjpeg_feed(camera_name):
  mimetype='multipart/x-mixed-replace; boundary=frame')
  else:
  return "Camera named {} not found".format(camera_name), 404
+
+ @app.route('/<camera_name>/latest.jpg')
+ def latest_frame(camera_name):
+ if camera_name in CONFIG['cameras']:
+ # max out at specified FPS
+ frame = object_processor.get_current_frame(camera_name)
+ if frame is None:
+ frame = np.zeros((height,int(height*16/9),3), np.uint8)
+
+ height = int(request.args.get('h', str(frame.shape[1])))
+ width = int(height*frame.shape[1]/frame.shape[0])
 
+ frame = cv2.resize(frame, dsize=(width, height), interpolation=cv2.INTER_AREA)
+ frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
+
+ ret, jpg = cv2.imencode('.jpg', frame)
+ response = make_response(jpg.tobytes())
+ response.headers['Content-Type'] = 'image/jpg'
+ return response
+ else:
+ return "Camera named {} not found".format(camera_name), 404
+
  def imagestream(camera_name, fps, height):
  while True:
  # max out at specified FPS