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The use of geometric indicators to estimate the quantitative completeness of street blocks in OpenStreetMap

机译：使用几何指示器估计OpenStreetMap中街道块的定量完整性

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摘要

OpenStreetMap (OSM) is a free global map dataset that was created by volunteers around the world. This inevitably means that there are a number of quality issues with the final OSM product, however. Extensive research has therefore been carried out to assess the quality of this product by applying a range of measures versus reference datasets, but little effort to date has been focused on quantitative quality estimation without reference datasets. The aim of this study is therefore to quantitatively estimate the completeness of street blocks in an OSM dataset. This was accomplished by initially exploring the relationship between geometric indicators (i.e., area, perimeter, and density) and street block completeness in an OSM road dataset, before these relationships were applied to quantitatively estimate completeness in other datasets. The results of this study show that: (1) street block completeness is positively correlated with density and negatively correlated with area and perimeter; and (2) in most cases, estimated completeness values for all street blocks within an OSM road dataset do not differ by more than 10% in absolute terms from actual completeness values. These results indicate that geometric indicators can be used as proxies to quantitatively estimate road completeness in OSM datasets.
机译：OpenStreetMap（OSM）是一个免费的全球地图数据集，由世界各地的志愿者创建。然而，这不可避免地意味着最终OSM产品存在许多质量问题。因此，已经进行了广泛的研究，以通过应用一系列测量与参考数据集进行了一系列测量来评估本产品的质量，但迄今为止的努力很少地专注于没有参考数据集的定量质量估算。因此，本研究的目的是定量估计OSM数据集中街区街区的完整性。这是通过最初探索几何指示符（即面积，周长和密度）和OSM Road DataSet中的街道块完整性之间的关系来实现的，在这些关系应用于在其他数据集中定量估计完整性之前。本研究的结果表明：（1）街道块完整性与密度呈正相关，与面积和周长呈负相关; （2）在大多数情况下，OSM道路数据集中所有街道块的估计完整性值与实际完整值的绝对术语没有超过10％。这些结果表明，几何指示器可以用作定量估计OSM数据集中的道路完整性的代理。

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