Abstract

Given a set P of n points on a 2D plane, an empty corridor is an open region bounded by two parallel polygonal chains that does not contain any point of P, and partitions the point-set P into two non-empty parts. An empty corridor is said to be a 1-corner empty corridor if each of the two bounding polygonal chains has exactly one corner point. We present an improved algorithm for computing the widest empty 1-corner corridor. It runs in O ( n 3 log 2 n ) time and O ( n 2 ) space. This improves the time complexity of the best known algorithm for the same problem by a factor of n log n [J.M. Diaz-Banez, M.A. Lopez, J.A. Sellares, On finding a widest empty 1-corner corridor, Information Processing Letters 98 (2006) 199–205].

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