cant visualise image with bounding boxes in viz2

[an99990]

Hi,
So i subscribed to the topic /detection_visualizer/dbg_images and I cant see any images.
QoS settings are ajusted. Detections come from your other repo : https://github.com/ros2/openrobotics_darknet_ros
So technically the published detections should be fine.

Please advice

[GeorgUr]

The reason is that the resulting detection image has no frame_id in the header. I made a PR for this issue #3.
For visualizing in RViz set the fixed frame to the frame_id of the image. Or make sure that there is a tf from the images frame_id to the fixed frame selected.

[sloretz]

Thank you for the fix in #3 🎉