Publish only a selection of ROS2 topic of ZED stereo node

We have four stereo cameras that we start via the ZED_multi node. Is there a possibility in the ROS2 node only to publish certain topics that we do not need and thus reduce the computing power somewhat?

Many thanks for a hint.

The ROS 2 topics are only advertised. They are NOT PUBLISHED if they are not subscribed to.
For this reason, if you reduce the number of published topics, you do not obtain a reduction in the computing power.

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