New perspective on sampling-based motion planning via random geometric graphs
Abstract
Roadmaps constructed by many sampling-based motion planners coincide, in the absence of obstacles, with standard models of random geometric graphs (RGGs). Those models have been studied for several decades and by now a rich body of literature exists analyzing various properties and types of RGGs. In their seminal work on optimal motion planning, Karaman and Frazzoli conjectured that a sampling-based planner has a certain property if the underlying RGG has this property as well. In this paper, we settle this conjecture and leverage it for the development of a general framework for the analysis of sampling-based planners. Our framework, which we call localization–tessellation, allows for easy transfer of arguments on RGGs from the free unit hypercube to spaces punctured by obstacles, which are geometrically and topologically much more complex. We demonstrate its power by providing alternative and (arguably) simple proofs for probabilistic completeness and asymptotic (near-)optimality of probabilistic roadmaps (PRMs) in Euclidean spaces. Furthermore, we introduce three variants of PRMs, analyze them using our framework, and discuss the implications of the analysis.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 01, 2018
- Source ID
- 10.1177/0278364918802957
Entities
People
- Dan Halperin
- Kiril Solovey
- Oren Salzman
Organizations
- Carnegie Mellon University
- German-Israeli Foundation for Scientific Research and Development
- Israel Science Foundation
- National Science Foundation
- Office of Naval Research
- Tel Aviv University