Title :
An efficient strategy for rapidly finding an object in a polygonal world
Author :
Sarmiento, Alejandro ; Murrieta, Rafael ; Hutchinson, Seth A.
Author_Institution :
Beckman Inst. for Adv. Sci. & Technol., Illinois Univ., Urbana, IL, USA
Abstract :
In this paper, we propose an approach to solve the problem of finding an object in a polygon which may contain holes. We define an optimal solution as the route that minimizes the expected time it takes to find said object. The object search problem is shown to be NP-hard by reduction, therefore, we propose the heuristic of an utility function, defined as the ratio of a gain over a cost and a greedy algorithm in a reduced search space that is able to explore several steps ahead without incurring in too high computational cost. This approach was implemented and simulation results are shown.
Keywords :
computational complexity; graph theory; mobile robots; object detection; optimisation; search problems; NP-hard problem; computational cost; greedy algorithm; object finding; polygonal world; search space; utility function; Art; Computational efficiency; Computational geometry; Computational modeling; Cost function; Greedy algorithms; Mobile robots; Robot sensing systems; Search problems;
Conference_Titel :
Intelligent Robots and Systems, 2003. (IROS 2003). Proceedings. 2003 IEEE/RSJ International Conference on
Print_ISBN :
0-7803-7860-1
DOI :
10.1109/IROS.2003.1248801