A Data Correction Algorithm for Low-Frequency Floating Car Data.
A Data Correction Algorithm for Low-Frequency Floating Car Data.
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一种低频浮动车数据的数据校正算法
DOI:
10.3390/s18113639
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发表时间:
2018-10-26
期刊:
影响因子:
--
通讯作者:
Cai Y
中科院分区:
文献类型:
--
作者:
Li B;Guo Y;Zhou J;Cai Y
The data collected by floating cars is an important source for lane-level map production. Compared with other data sources, this method is a low-cost but challenging way to generate high-accuracy maps. In this paper, we propose a data correction algorithm for low-frequency floating car data. First, we preprocess the trajectory data by an adaptive density optimizing method to remove the noise points with large mistakes. Then, we match the trajectory data with OpenStreetMap (OSM) using an efficient hierarchical map matching algorithm. Lastly, we correct the floating car data by an OSM-based physical attraction model. Experiments are conducted exploiting the data collected by thousands of taxies over one week in Wuhan City, China. The results show that the accuracy of the data is improved and the proposed algorithm is demonstrated to be practical and effective.
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