Carnegie Mellon University
Path-Connectivity of the Free Space

Alberto Rodriguez and Matthew T. Mason
IEEE Transactions on Robotics (TRO), Vol. 28, No. 5, pp. 1177-1180, October, 2012.

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This paper revisits the notion of free configuration space and reviews some of its path-connectivity related properties. Literature on motion planning reveals at least three different definitions for the free configuration space of a robot in the presence of obstacles. This paper shows that, assuming regularity of both object and obstacles, those three definitions are equivalent. We show the three definitions regularize the free space and therefore prevent the existence of “thin bits”, or low dimensional strata. The paper concludes discussing a series of properties regarding the existence and smoothability of contact-free paths between pairs of configurations.

Configuration space, Path planning

Associated Center(s) / Consortia: Center for the Foundations of Robotics
Associated Lab(s) / Group(s): Manipulation Lab
Associated Project(s): Simple Hands
Number of pages: 4

Text Reference
Alberto Rodriguez and Matthew T. Mason , "Path-Connectivity of the Free Space," IEEE Transactions on Robotics (TRO), Vol. 28, No. 5, pp. 1177-1180, October, 2012.

BibTeX Reference
   author = "Alberto Rodriguez and Matthew T. {Mason }",
   title = "Path-Connectivity of the Free Space",
   journal = "IEEE Transactions on Robotics (TRO)",
   pages = "1177-1180",
   month = "October",
   year = "2012",
   volume = "28",
   number = "5",