error: no matching function for call to ‘tf2_ros::Buffer::lookupTransform(std::cxx11::string&, std_msgs::msg::Header<std::allocator >::frame_id_type&, std_msgs::msg::Header<std::allocator >::stamp_type&, tf2::Duration)’ point_cloud.header.stamp, tf2::durationFromSec(2.0)); about gb_visual_detection_3d

[fmrico]

Hi!!

No. These are more detailed instructions to use gdb to debug a segmentation fault:

1. Clean up the workspace by deleting build install and log.

2. Open another terminal and compile with: colcon build --symlink-install --cmake-args -DCMAKE_BUILD_TYPE=Debug

3. Modify the launcher so that node is launched with gdb in a separate terminal (you must have xterm installed):
   darknet3d_node = Node(
   package='darknet_ros_3d',
   node_executable='darknet3d_node',
   prefix='xterm -e gdb -ex run --args',
   node_name='darknet3d_node',
   output='screen',
   parameters=[config_file_path]
   )

4. Launch it

5. When it fails, it will tell you the line. Use 'bt' and other gdb commands to see what happened. If you want, send me the output.

Good luck!!

[fmrico]

Maybe Dashing is not supported. I think it's too old...

[miga94]

Hello @fmrico , Thank you for your reply.
I am now testing with ros-eloquent and latest intelrealsense2 ros-development branch. I have detection with darknet ros but get following error when launched darknet_ros_3d.
[ERROR] [darknet3d_node-1]: process has died [pid 4197, exit code -11, cmd '/home/robolab/ros2_ws/install/darknet_ros_3d/lib/darknet_ros_3d/darknet3d_node --ros-args -r __node:=darknet3d_node --params-file /home/robolab/ros2_ws/install/darknet_ros_3d/share/darknet_ros_3d/config/darknet_3d.yaml'].

I have given correct topics in the darknet3D.yaml files.

[fmrico]

Hi @miga94

You are obtaining a segmentation fault that does not give you much information.

Build with CMAKE_BUILD_TYPE to Debug or RelWithDebInfo and launch the node with prefix='xterm -e gdb -ex run --args'

Best

[miga94]

Hello @fmrico ,
If I understood you I ran the following command while running the node:
xterm -e gdb -ex run --args ros2 launch darknet_ros_3d darknet_ros_3d.launch.py

Is this formulation correct? Attached is the screenshot what I got from this.