A Near-Linear Time Guaranteed Algorithm for Digital Curve
نویسندگان
چکیده
منابع مشابه
A Near-Linear Time Guaranteed Algorithm for Digital Curve Simplification under the Fréchet Distance
Given a digital curve and a maximum error, we propose an algorithm that computes a simplification of the curve such that the Fréchet distance between the original and the simplified curve is less than the error. The algorithm uses an approximation of the Fréchet distance, but a guarantee over the quality of the simplification is proved. Moreover, even if the theoretical complexity of the algori...
متن کاملA Near-Linear Time ε-Approximation Algorithm for Geometric Bipartite
For point sets A,B ⊂ R, |A| = |B| = n, and for a parameter ε > 0, we present a Monte Carlo algorithm that computes, in O(npoly(log n, 1/ε)) time, an ε-approximate perfect matching of A and B under any Lp-norm with high probability; the previously best known algorithm takes Ω(n) time. We approximate the Lp-norm using a distance function, d(·, ·) based on a randomly shifted quad-tree. The algorit...
متن کاملA Near-Linear Pseudopolynomial Time Algorithm for Subset Sum
Given a set Z of n positive integers and a target value t, the SubsetSum problem asks whether any subset of Z sums to t. A textbook pseudopolynomial time algorithm by Bellman from 1957 solves SubsetSum in time O(n t). This has been improved to O(nmaxZ) by Pisinger [J. Algorithms’99] and recently to Õ(√n t) by Koiliaris and Xu [SODA’17]. Here we present a simple and elegant randomized algorithm ...
متن کاملA Novel Algorithm for Digital Distance Relaying
Distance relays are used to protect EHV and HV Transmission lines. Over the past decades many algorithms have emerged for digital distance relays. These are based on the calculation of the transmission line impedance from the relaying to fault points. In this paper a novel method for digital distance relaying is proposed. In the method the tracking procedure is implemented. The method uses the ...
متن کاملA Novel Algorithm for Digital Distance Relaying
Distance relays are used to protect EHV and HV Transmission lines. Over the past decades many algorithms have emerged for digital distance relays. These are based on the calculation of the transmission line impedance from the relaying to fault points. In this paper a novel method for digital distance relaying is proposed. In the method the tracking procedure is implemented. The method uses the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Image Processing On Line
سال: 2014
ISSN: 2105-1232
DOI: 10.5201/ipol.2014.70