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Rectilinear shortest paths through polygonal obstacles in O(n(logn)2) time
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Source Annual Symposium on Computational Geometry archive
Proceedings of the third annual symposium on Computational geometry table of contents
Waterloo, Ontario, Canada
Pages: 251 - 257  
Year of Publication: 1987
ISBN:0-89791-231-4
Authors
K. Clarkson  AT&T Bell Laboratories, Murray Hill, New Jersey
S. Kapoor  AT&T Bell Laboratories, Murray Hill, New Jersey
P. Vaidya  AT&T Bell Laboratories, Murray Hill, New Jersey
Sponsors
SIGACT: ACM Special Interest Group on Algorithms and Computation Theory
SIGGRAPH: ACM Special Interest Group on Computer Graphics and Interactive Techniques
Publisher
ACM  New York, NY, USA
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Downloads (6 Weeks): 5,   Downloads (12 Months): 23,   Citation Count: 19
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ABSTRACT

The problem of finding a rectilinear shortest path amongst obstacles may be stated as follows: Given a set of obstacles in the plane find a shortest rectilinear (L1) path from a point s to a point t which avoids all obstacles. The path may touch an obstacle but may not cross an obstacle. We study the rectilinear shortest path problem for the case where the obstacles are non-intersecting simple polygons, and present an &Ogr;(n (logn)2) algorithm for finding such a path, where n is the number of vertices of the obstacles. We also study the case of rectilinear obstacles in three dimensions, and show that L1 shortest paths can be found in &Ogr;(n2(log n)3) time.


REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

 
D
E. W. Dijkstra, A note on two problems in connexion with graphs. Numer. Math., I (1959) pp. 269- 271.
 
GS
L. Guibas and J. Stolfi. On computing a; north-east nearest neighbors in the f., metric. Unpublished manuscript.
 
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R. C. Larson and V. 0. Li. Finding minimum rectilinear paths in presence of barriers, Networks, I I, 1981, 285-303.
 
LP
D. T. Lee and F. P. Prcparata, Euclidean shortest paths among rectilinear barriers. Networks, 14. 19114, pp. 393-d IO.
LPW
 
RPW
P. J. de Rezende, D. T. Lee, and Y. F. Wu. Rectilinear shortest paths with rectangular barriers. Proc. 2nd Annual Conf. Computational Geometry. pp. 205213.

CITED BY  19

Collaborative Colleagues:
K. Clarkson: colleagues
S. Kapoor: colleagues
P. Vaidya: colleagues