中山大学学报（自然科学版）Issue(5)：148-152,5.
基于结点加密的边线捕捉处理方法*
Snapping Polylines Using Densified Vertexes
摘要
Abstract
Aiming to eliminating the spatial inconsistency between the input features and reference ones, this paper proposed a method to snap input lines to reference ones based on densifying input lines.The algorithm consists of three steps:inserting auxiliary nodes,snapping nodes,and reordering snapped nodes.Inserted nodes partition input lines make it possible to accurately snap segments to reference lines.The extra adjusting step reorders the snapped nodes and thus eliminates the self-intersections on in-put lines.Experimental results showed that the snapped line by the new method coincided completely with the referred one in tolerance distance,and no self-intersections were found on the rectified lines, better than the results by ArcGIS software.The results proved the effectiveness of inserting auxiliary nodes and reordering the snapped nodes in this algorithm.关键词
空间数据融合/地图合并/边线捕捉/空间一致性Key words
geospatial data integration/map conflation/line snapping/spatial consistency分类
天文与地球科学引用本文复制引用
张青年..基于结点加密的边线捕捉处理方法*[J].中山大学学报（自然科学版）,2013,(5):148-152,5.基金项目
国家自然科学基金资助项目 （）
