A coastline generalization method that considers buffer consistency.

A coastline generalization method that considers buffer consistency.
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一种考虑缓冲区一致性的海岸线泛化方法

DOI:
10.1371/journal.pone.0206565
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发表时间:
2018
期刊:
影响因子:
3.7
通讯作者:
Tan S
Tan S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Yang H;Li L;Hu H;Wu Y;Xia H;Liu Y;Tan S

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海岸线是海洋与陆地的分界线,是空间数据中重要的线特征。当海岸线存储在多尺度空间数据库中时,必须通过地图概括进行调整。本文提出了一种新的海岸线概括方法,该方法考虑了从原始海岸线到广义海岸线的缓冲区一致性。该方法利用地理距离场来识别影响原始海岸线到广义海岸线缓冲一致性的特征点和弯道,并利用该过程简化弯道并保持泛化中的凹凸特征。该方法与弯曲简化方法进行了比较,结果表明该方法能够保留海岸线的形状特征。而且,当距离大于海岸线概括的容差时,从原始海岸线到广义海岸线的临海缓冲区边界是一致的。
Coastlines are the boundary between the ocean and land and are an important line feature in spatial data. Coastlines must be adapted via map generalization when they are stored in multi-scale spatial databases. This article presents a new method of coastline generalization that considers the buffer consistency from the original coastline to the generalized coastlines. This method uses the geographical distance field to identify the feature points and bends that influence the buffer consistency from the original coastline to the generalized coastline, and the process is also used to simplify the bends and maintain the concave and convex characteristics in the generalization. This method is compared to the bend-simplification method, and the results indicate that the proposed method can preserve the shape characteristics of coastlines. Moreover, the seaward buffer boundaries from the original coastline to the generalized coastline are consistent when the distance is greater than the tolerance of the coastline generalization.
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