Abstract

J. Han, T. Uras and S. Koenig. Toward a String-Pulling Approach to Path Smoothing on Grid Graphs. In Proceedings of the Symposium on Combinatorial Search (SoCS), pages 106-110, 2020.

Abstract: Paths found on grid graphs are often unrealistic looking in the continuous environment that the grid graph represents and often need to be smoothed after a search. The well-known algorithm for path smoothing is greedy in nature and does not necessarily eliminate all heading changes in freespace. We present preliminary research toward a new path-smoothing algorithm based on 'string pulling' and show experimentally that it consistently finds shorter paths than the greedy path-smoothing algorithm and produces paths with no heading changes in freespace. Comment: After we published the paper, a student in our group answered the open question in the paper whether the string-pulling approach is optimal. This technical report shows that it is not. He also found an optimal approach published in S. Bespamyatnikh, Computing Homotopic Shortest Paths in the Plane, J. Algorithms, 49(2), 284-303.

Download the paper in pdf.

Many publishers do not want authors to make their papers available electronically after the papers have been published. Please use the electronic versions provided here only if hardcopies are not yet available. If you have comments on any of these papers, please send me an email! Also, please send me your papers if we have common interests.


This page was automatically created by a bibliography maintenance system that was developed as part of an undergraduate research project, advised by Sven Koenig.