There and back again: using fréchet-distance diagrams to find trajectory turning points
There and back again: using fréchet-distance diagrams to find trajectory turning points
复制标题
来来回回:使用弗雷切特距离图找到轨迹转折点
DOI:
10.1145/2820783.2820878
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Schamel
中科院分区:
文献类型:
--
作者:
Beckmann;L. Budig;Van Dijk;Schamel
There is much interest in the automatic analysis of GPS trajectories, motivated amongst others by animal tracking, traffic modelling and tourism studies. Core questions involve for example detecting stopping points and flocking behaviour, and developing routing models. In this paper we consider turning points. We develop a formal definition of "turning point" based on analysing the structure of free-space diagrams for Fréchet distance. We give an efficient algorithm for computing an optimal set of turning points under this criterion.Our method is evaluated in the context of a current study on tourist preferences at Berchtesgaden National Park, Germany. We evaluate the suitability of our definition and the efficiency of our algorithm on a large set of real-world GPS trajectories collected by outdoor recreationists. A ground truth of turning points was established by hand for the complete data set. Experiments show that the runtime and quality of our method are suitable for practical applications.
DOI:
--
发表时间:
2013
期刊:
ACM-SIAM Symposium on Discrete Algorithms
影响因子:
--
作者:
Boris Aronov;Anne Driemel;Mar van Kreveld
通讯作者:
Mar van Kreveld
DOI:
--
发表时间:
2015
期刊:
International Symposium on Computational Geometry
影响因子:
--
作者:
D. Bokal;Sergio Cabello;D. Eppstein
通讯作者:
D. Eppstein
DOI:
10.14627/537557008
发表时间:
2015
期刊:
AGIT Journal Angew. Geoinformatik
影响因子:
--
作者:
Schamel
通讯作者:
Schamel