Math @ Duke

Publications [#235576] of Pankaj K. Agarwal
Papers Published
 Agarwal, PK; Pellegrini, M; Sharir, M, Counting circular arc intersections,
SIAM Journal on Computing, vol. 22 no. 4
(1993),
pp. 778793
(last updated on 2018/03/24)
Abstract: In this paper efficient algorithms for counting intersections in a collection of circles or circular arcs are presented. An algorithm for counting intersections in a collection of n circles is presented whose running time is O(n3/2+ε), for any ε>0 is presented. Using this algorithm as a subroutine, it is shown that the intersections in a set of n circular arcs can also be counted in time O(n3/2+ε). If all arcs have the same radius, the running time can be improved to O(n4/3+ε), for any ε>0.


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