topic mismatch

[eirikese]

I'm getting this error message when running: rosrun lidar_obstacle_detector obstacle_detector_node

[ WARN] [1694011142.137067402]: couldn't register subscriber on topic [/]
[ERROR] [1694011142.138495795]: Tried to advertise on topic [/] with md5sum [c8f4a8bb1acd18ce778d183912bb472d] and datatype [jsk_recognition_msgs/BoundingBoxArray], but the topic is already advertised as md5sum [1158d486dd51d683ce2f1be655c3c181] and datatype [sensor_msgs/PointCloud2]
[ERROR] [1694011142.138548295]: Tried to advertise on topic [/] with md5sum [c16aecef51c24c6808480a0295e47806] and datatype [autoware_msgs/DetectedObjectArray], but the topic is already advertised as md5sum [1158d486dd51d683ce2f1be655c3c181] and datatype [sensor_msgs/PointCloud2]

[HiYvaine]

I also encountered the same problem, the root cause is that the hungarianFind function in the hpp file lacks a stable return value.

[SS47816]

Hi,

Thanks for spotting the issue! I have now fixed the return value in the function hungarianFind().

Please let me know if your issue still persists.

Best regards,
Shuo

[juannn01]

Hi there! I'm facing the similar problem when launching the mai_city.launch file.

I'm trying with my own data using the point cloud obtained from RoboSense LiDAR and the topics contained in the rosbag are as follows:

I've also made some changes on the mai_city.launch file to suit my own lidar and the codes are shown below:

When I launched the file and play the rosbag at the same time, the warning error exists and the rviz is not showing any result unless I selected the Velodyne Points to view the original point cloud from my rosbag file.

Would really appreciate if you could provide any advice in solving this issue. Thanks in advance!

[SS47816]

Hi juannn01,

May I know if your issue still exists after trying the latest code (the version with the hungarianFind() return value fixed)?

I am not able to reproduce your error on my side right now. If it persists, please provide more information so I can track down the root cause.

Thanks!
Shuo

[Reyshwanth]

Hey Shuo Sun,

I have the same issue. I believe you have not pushed the code with the change to hungarianFind() yet!

Reyshwanth

[ddwnbe]

Hello Shuo Sun

I am encountering the same error as the others:

I am using the mai_city.launch, but modified to receiver another sensor_msgs/PointCloud2 as input. I pulled the code yesterday and built it for ROS Noetic 1.16.0.

Best regards
ddwnbe

edit: in obstacle_detector_node.cpp I came across the following:

I removed ROS_ASSERT(...) and after that, I no longer got the error. A std::cout showed that the topics were empty, when ROS_ASSERT(...) was present in the code. I did not look further into why this is.

[yulongheart]

Hello, I have encountered some issues. It seems that there is an undefined symbol, "_ZN4rviz12EnumPropertyC1ERK7QStringS3_S3-PNS_8PropertyE", when loading the libjsk_rviz_plugins.so dynamic link library. I would like to ask if you have encountered this issue and how to solve it.

[JiaoxianDu]

Hello, I have encountered some issues. It seems that there is an undefined symbol, "_ZN4rviz12EnumPropertyC1ERK7QStringS3_S3-PNS_8PropertyE", when loading the libjsk_rviz_plugins.so dynamic link library. I would like to ask if you have encountered this issue and how to solve it.

apt update and apt upgrade solved same problem to me.