Specification on catching TransformException

Author: AlexeyMerzlyakov

kf_hungarian_tracker/kf_hungarian_tracker/kf_hungarian_node.py

@@ -10,6 +10,7 @@
 import colorsys
 from kf_hungarian_tracker.obstacle_class import ObstacleClass
 
+from tf2_ros import TransformException
 from tf2_ros.buffer import Buffer
 from tf2_ros.transform_listener import TransformListener
 from tf2_geometry_msgs import do_transform_point, do_transform_vector3
@@ -119,7 +120,7 @@ def callback(self, msg):
                     s.vector = detections[i].size
                     detections[i].size = do_transform_vector3(s, trans).vector
 
-            except Exception as ex:
+            except TransformException as ex:
                 self.get_logger().error(
                     'fail to get tf from {} to {}: {}'.format(
                     msg.header.frame_id, self.global_frame, ex))