Integration of GPS traces with road map
Integration of GPS traces with road map
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DOI：
10.1145/1899441.1899447
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发表时间：
2010-11
期刊：
影响因子：
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通讯作者：
Lijuan Zhang;F. Thiemann;Monika Sester
中科院分区：
文献类型：
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作者：
Lijuan Zhang;F. Thiemann;Monika Sester
GPS轨迹可以跟踪正常车辆的实际时间和坐标，正常情况下很容易缩放到整个区域，精度在6到10米之间。因此，从GPS轨迹中提取道路地图可以替代传统的道路地图生成方式。本文的基本思想是描述一种基于GPS轨迹的新信息逐步改进现有道路数据的过程。通过这种方式，我们将GPS轨迹视为代表真实道路“数字化”的测量。虽然轨迹的精度不是太高，但由于测量次数多，可以实现道路信息质量的提高。因此，本文提出了一种将GPS轨迹与现有的无版权路线图相结合的方法，以获得更准确，最新数据和详细的路线图。首先，我们通过一系列垂直线对现有道路进行轮廓，并得到与轮廓相交的道路候选采样轨迹。然后将潜在的轨迹与道路进行匹配，最后根据相应的轨迹估计出新的道路中心线。除了道路的几何形状，我们还从GPS轨迹中挖掘属性信息，如道路的车道数和转弯限制。
GPS traces can track actual time and coordinates of regular vehicles going their own business, and it is easy to scale to the entire area with an accuracy of 6 to 10 meters in normal condition. As a result, extracting road map from GPS traces could be an alternative way to traditional way of road map generation. The basic idea of this paper is to describe a process which incrementally improves existing road data with incoming new information in terms of GPS traces. In this way we consider the GPS traces as measurements which represent a "digitization" of the true road. Although the accuracy of the traces is not too high, due to the high number of measurements an improvement of the quality of the road information can be achieved. Thus, this paper presents a method for integrating GPS traces and an existing out of copyright road map towards a more accurate, up-to-data and detailed road map. First we profile the existing road by a sequence of perpendicular lines and get the road's candidate sampling traces which intersect with the profile. Then we match the potential traces with the road and finally estimate the new road centerline from its corresponding traces. In addition to the geometry of roads we also mine attribute information from GPS traces, such as number of lanes and turning restrictions of the roads.