C++ program (ROS node) for working with several camera is slow in Linux

I wrote a C++ program (ROS Node) in Linux (Ubuntu 18.04) to get camera images and publish them on ROS topics.

When I connect one camera, it publishes 90 frames per second, which is equal to the highest frame rate of my cameras. However, when I connect two cameras, the publishing rate decreases to 45 per second.

For more images, codes and explanation, please see my question on Stackoverflow:

https://stackoverflow.com/questions/72906204/c-program-ros-node-for-working-with-several-camera-is-slow-in-linux

Asked by farhad-bat on 2022-07-07 22:04:15 UTC

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For more images, codes and explanation, please see my question on Stackoverflow [..]

you have done this a few times now, and I'm going to ask you to stop cross-posting like this.

Please decide which post you want to keep open.

In the meantime, I'll close this one, to avoid facilitating a split discussion and potential duplication of effort.

Asked by gvdhoorn on 2022-07-08 00:38:18 UTC

C++ program (ROS node) for working with several camera is slow in Linux

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