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/tf topics will be published when it has started started tracking the User. Before 'tracking' you cannot visualize anything in the rviz. Just make sure you have added the TF and select /openni_depth_frame as Fixed/Reference frame .

Second option is to use the ros openni_tracker on offline data. Record a '.oni' file with Openni Sample NiViewer and then run the ros openni_tracker on this recorded data. For implementation details please checkout my post.

[http://tayyabnaseer.blogspot.de/2012/04/running-ros-openni-tracker-with.html]

/tf topics will be published when it has started started tracking the User. Before 'tracking' you cannot visualize anything in the rviz. Just make sure you have added the TF and select /openni_depth_frame as Fixed/Reference frame .

Second option is to use the ros openni_tracker on offline data. Record a '.oni' file with Openni Sample NiViewer and then run the ros openni_tracker on this recorded data. For implementation details please checkout my post.

[http://tayyabnaseer.blogspot.de/2012/04/running-ros-openni-tracker-with.html]