面向地理国情普查水系要素的属性自动校正算法

Automatic Correction Algorithm of Water Element Attribute Oriented to National Geographic Census

地理国情普查水域数据中线状水系数据存在部分数据属性不明确的情况,目前主要通过人工填写逐个修正,效率低且易出错。基于此,本文提出了一种线状水系要素属性自动校正的算法,通过对数据结构特征和拓扑关系的分析,提出了考虑水系网络邻近关联性、结构健壮性及拓扑延展性的属性校正三大基本原则,并依托中国测绘科学研究院研制的WJ-Ⅲ地图工作站实现了水系要素的自动化校正;最后用实际数据测试验证了这些基本原则的合理性和方法的有效性。

A subset of the attributes of water element data in national geographic census are not clear, the current solution to this problem is manual filling which is inefficient and liable to make mistakes. So this paper proposes an automatic correction algorithm of water element attribute. Based on the analysis of the structure characteristics and topological relation, we put forward three basic principles of correction which include network proximity, structure robustness and topology ductility. Based on the WJ-Ⅲ map workstation which is developed by Chinese Academy of Surveying and Mapping, we realize the automatic correction of water elements. Finally, practical data are used to validate the method. The results show that our method is highly reasonable and efficient.