Added robot cylinder removal in and it works, although quite slowly.
Before making tracker_3d as a class.
Changed tracker3d to be in a dummy class. Can get robot transforms to delete them from the scene - although untested. Also, added in merging point clouds close in ground
coordinates.
Merge branch 'fall14_e' of https://github.com/gt-ros-pkg/rim-bmw-experiments into fall14_e