| Rectilinear shortest paths through polygonal obstacles in O(n(logn)2) time |
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Annual Symposium on Computational Geometry
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Proceedings of the third annual symposium on Computational geometry
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Waterloo, Ontario, Canada
Pages: 251 - 257
Year of Publication: 1987
ISBN:0-89791-231-4
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Authors
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K. Clarkson
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AT&T Bell Laboratories, Murray Hill, New Jersey
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S. Kapoor
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AT&T Bell Laboratories, Murray Hill, New Jersey
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P. Vaidya
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AT&T Bell Laboratories, Murray Hill, New Jersey
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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.
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CITED BY 19
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Masao Sato , Kazuto Kubota , Tatsuo Ohtsuki, A hardware implementation of gridless routing based on content addressable memory, Proceedings of the 27th ACM/IEEE conference on Design automation, p.646-649, June 24-27, 1990, Orlando, Florida, United States
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Danny Z. Chen , Kevin S. Klenk , Hung-Yi T. Tu, Shortest path queries among weighted obstacles in the rectilinear plane, Proceedings of the eleventh annual symposium on Computational geometry, p.370-379, June 05-07, 1995, Vancouver, British Columbia, Canada
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Mark de Berg , Marc van Kreveld , Bengt J. Nilsson, Shortest path queries in rectilinear worlds of higher dimension (extended abstract), Proceedings of the seventh annual symposium on Computational geometry, p.51-60, June 10-12, 1991, North Conway, New Hampshire, United States
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Moshe Dror , Alon Efrat , Anna Lubiw , Joseph S. B. Mitchell, Touring a sequence of polygons, Proceedings of the thirty-fifth annual ACM symposium on Theory of computing, June 09-11, 2003, San Diego, CA, USA
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Chung-Wei Lin , Szu-Yu Chen , Chi-Feng Li , Yao-Wen Chang , Chia-Lin Yang, Efficient obstacle-avoiding rectilinear steiner tree construction, Proceedings of the 2007 international symposium on Physical design, March 18-21, 2007, Austin, Texas, USA
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