Is there a node that returns all of the LaserScan points that are (probably) not in the map?
Edit: Clarification: I was assuming a static map relative to a robot that has already been localized. What I'd like to be able to say is "these laser scans are of the wall (which has always been there) and this person shaped blob of laser readings is new."
Post score: 2
Comment by David Lu on 2011-12-21:
Clarification posted above.
Comment by Eric Perko on 2011-12-20:
Could you add some detail to this question? What map (local or global from costmap_2d with s standard nav_stack config? or something entirely different?)? And do you mean the points there are to be inserted into a map as fresh obstacles or a "scan" representing things your scan missed in the map?