Viewing images from cameras
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.
Viewing in a browser
To view a video-stream, you have to connect to Wi-Fi network of the Clover (
clover-xxxx), navigate to page http://192.168.11.1:8080/, and choose the topic.
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
Browse with rqt_image_view
To browse images with the rqt tools the user needs a computer with Ubuntu 20.04 and ROS Noetic.
Connect to the Clover 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.