My coursemates and I are trying to set up some kind of localisation for our ROV using fiducial markers from the video stream of the vehicle. At the moment we’re using ROS packages to write the localisation software, but we haven’t managed to integrate the ROS packages with the control of the vehicle. Any information on how this might be possible would be greatly appreciated, specifically how do we get ROS to send movement commands or positioning data to the ROV. Thanks!