NAO's location is tracked by the marker on its head.
In addition to NAO's imprecise walking, the error in marker position estimation results in NAO observing that it's away from its planned path and replan its path many times and therefore uncontinuous movement.
Implementation is by using the following ROS packages: footstep_planner, ar_pose, map server, tf, NAO stack and usb_cam.
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Robolab, SnT and CsC, University of Luxembourg
Intelligent Systems Group, Utrecht University