To view images from cameras (or other ROS topics), you can use rviz, rqt, or watch them in a browser using web_video_server.
See read more about using rqt.
Make sure that in Clever launch-file (
web_video_server is enabled:
<arg name="web_video_server" default="true"/>
After the launch-file is edited, restart package
sudo systemctl restart clever
If the image is transmitted too slow, you can speed it up by changing GET parameter
quality (from 1 to 100), which is responsible for video-stream compression, for example:
At the URL above, a stream from the main camera will be available in the minimum possible quality.
height, etc. re also available. Read more about
To browse images with the rqt tools the user needs a computer with Ubuntu 18.04 and ROS Melodic.
Connect to the Clever Wi-Fi network an run
rqt_image_view with its IP-address:
Choose a topic for browsing, for example
To reduce network load and reduce latency, use a compressed version of the topic –
To change the compression settings use the rqt-plugin Dynamic Reconfigure:
Refer to more about rviz and rqt.