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- W2017299747 abstract "First we give an optimal EREW PRAM algorithm that finds an unknown discrete monotone function ƒ, with domain and range of size n , in O( log n ) time using O( n ) independent threshold queries of kind “ƒ(x) ⩾ y?”. Here “independent” means that simultaneous queries always refer to mutually disjoint values x and y . This is used for solving, within the same resources, a certain segmentation problem for words over semigroups. The classical problem of partitioning a digital curve into a minimum number of digital line segments, which is of interest in digital image processsing, turns out to be a special case of this, and can therefore be solved in O( log n ) time using O( n ) work on an EREW PRAM. This strengthens and generalizes all known algorithmic results about digital curve segmentation. As a further prerequisite we use the Dorst-Smeulders parametrization of digital line segments." @default.
- W2017299747 created "2016-06-24" @default.
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- W2017299747 date "1997-05-01" @default.
- W2017299747 modified "2023-09-27" @default.
- W2017299747 title "An optimal parallel algorithm for digital curve segmentation" @default.
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- W2017299747 doi "https://doi.org/10.1016/s0304-3975(96)00227-7" @default.
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