Hi ros users, We've put a first version of our camera_pose_estimation stack online: http://www.ros.org/wiki/camera_pose_estimation, available in the kul-ros-pkg repository. The stack builds upon the ar_pose package, but allows tracking markers with _multiple_ cameras taking into account measurement uncertainty as provided in the ARMarker message, as opposed to the ar_pose package which allows tracking one / multiple markers with a single camera. All available estimates are converted to world coordinates and fused using an Extended Kalman Filter as provided in BFL. If you have any suggestions/comments/questions about the stack, let us know! best regards, Steven Bellens Koen Buys