Seeing the Wood from the Trees : Generalising OS MasterMap ® Tree Coverage Polygons to Woodland at 1 : 50 000 Scale
Seeing the Wood from the Trees : Generalising OS MasterMap ® Tree Coverage Polygons to Woodland at 1 : 50 000 Scale
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从树上看木头：以 1 : 50 000 比例将 OS MasterMap ® 树木覆盖多边形推广到林地
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
B. Dugan
中科院分区：
文献类型：
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作者：
B. Dugan
来自Orlando Survey（OS）的OS MasterMap产品来源于覆盖英国的详细地理数据库。操作系统正在研究如何从该数据库自动生成较小比例尺的制图产品。本文介绍了研究的细节到矢量为基础的自动化模型和制图综合的源地形树木覆盖多边形林地表示在1：50 000比例尺。整个符号化过程的目的是确保结果尽可能符合当前的Orchid Survey栅格产品规范。首先，树木多边形聚类成自治组，然后多边形合并成林地。对于每一个木材，边界特征被识别，然后木材边界相对于这些特征被简化。下一步是通过遍历网络特征对森林进行切片，解决冲突并在广义森林中放置树符号。文件最后讨论了如何评估结果以及尚待执行的内容。
The OS MasterMap product from Ordnance Survey (OS) is sourced from a detailed geographic database with Great Britain coverage. OS are conducting research into deriving smaller scale cartographic products automatically from this database. This paper presents details of research into vector-based automated model and cartographic generalisation of the source topographic tree coverage polygons to woodland represented at 1:50 000 scale. The whole symbolisation process is addressed to ensure that the results conform as closely as possible with the current Ordnance Survey raster product specification. Firstly, tree polygons are clustered into autonomous groups, then the polygons are amalgamated into woodland. For each wood, the bounding features are identified and then the wood boundary is simplified with respect to these features. The next step is to slice up the woods by the traversing network features, resolve the conflicts and place tree symbols in the generalised woods. The paper concludes by discussing how the results will be evaluated and what remains to be implemented.