复合界址线的自动规范化处理方法与算法实现  

Algorithm realization of automatic normalization method of composite boundary line

作　　者：许承权[1] 张帆 黄德华 吴永红 XU Chengquan;ZHANG Fan;HUANG Dehua;WU Yonghong(College of Geography and Ocean,Minjiang University,Fuzhou 350108,China;Fujian Surveying and Mapping Institute,Fuzhou 350100,China;Fujian Geologic Surveying and Mapping Institute,Fuzhou 350100,China)

机构地区：[1]闽江学院地理与海洋学院,福州350108 [2]福建省测绘院,福州350100 [3]福建省地质测绘院,福州350100

出　　处：《测绘科学》2022年第6期168-173,共6页Science of Surveying and Mapping

基　　金：福建省自然科学基金项目(2020J01834);福建省科技厅引导性项目(2015H0029);福建省自然资源厅科技项目(KY-030000-04-2021-006)

摘　　要：针对带圆弧或带孤岛的复合界址线在数据格式转换过程中可能出现偏差、错位、自相交等错误,人工修改工作量巨大的问题,该文提出了一种新的复合界址线自动规范化算法。通过精度反推圆弧节点数量,采用极坐标法的等角切分算法计算出圆弧上任意位置的坐标,实现带圆弧复合界址线的自动规范化;采用用户交互的方式在带孤岛界址线的连接线上增加节点,解决界址线的线段自相交问题;再计算界址线各节点的方位角,自动查找左上角凸点,并转换界址线起点和方向,实现复合界址线的规范化。实验结果表明:该文所提算法较好地解决了复合界址线数据格式转换过程中产生的问题,避免人工转换的麻烦,可以快速实现界址线自动规范化,为后续土地勘测定界报告生成、界址线数据格式转换等提供方便。Aiming at the problem of deviation,dislocation,self-intersection errors in the data format conversion process of composite boundary lines with arcs or islands and huge workload of manual modification,a new automatic normalization algorithm for composite boundary line was proposed.The arc nodes number was reversed by accuracy,and the coordinates of any position on the arc were calculated by the equiangular segmentation algorithm of the polar coordinate method to realize the automatic normalization of the composite boundary line with arc.The boundary line with islands was adopted by user interaction.Nodes were added on the connection line of boundary address line to solve the self-intersection problem of boundary line;then the azimuth angle of each node on the boundary line were calculated,and the convex point on the upper left corner were found out automatically,and the starting point and direction of boundary line were converted to realize the composite boundary line normalization.Experimental results showed that the proposed algorithm solved the problems in the conversion process effectively,avoided the trouble of manual work,and realized the automatic normalization of boundary line quickly,which made it easier for follow-up report generation of land investigation delimitation and data format conversion of boundary line.

关 键 词：土地勘测定界 复合界址线 等角切分算法 孤岛 自动规范化 

分 类 号：P208[天文地球—地图制图学与地理信息工程]