摘要
地图上道路符号化后的共线处理是解决道路符号空间冲突的方法之一。文中提出一种道路弯曲组共线和移位的协同处理方法,该方法利用道路的约束性三角网识别道路的空间冲突区域,提取空间冲突路段区域的骨架线,并计算相关弯曲的特征信息,然后把道路符号共线的几何计算方法和Snake移位模型相结合,协同解决道路符号共线和移位问题。该方法不仅能保证在给定的空间位置上道路符号共线,也能够保持道路形状特征。实验结果验证算法的有效性和实用性。
The collinear processing is one of the methods to solve the spatial conflict of road symbols after roads on the map are symbolized.In this paper,a collaborative method is proposed for collinearity and displacement of a group of road bends.Based on constrained Delaunay triangulation of a road,regions with spatial conflict are recognized,skeleton lines in regions between two parts of roads with spatial conflict are extracted,and the characteristics of bends are figured out.Then geometric computation of road symbol collinearity and Snake displacement model is combined in order to resolve road symbol collinearity and displacement collaboratively.This method can not only guarantee road symbol collinearity in a given location,but also maintain shape characteristics of the road.The experimental result verifies the effectiveness and practicability of the algorithm proposed in this paper.
作者
郑传帮
郭庆胜
王琳
ZHENG Chuanbang;GUO Qingsheng;WANG Lin(School of Resource and Environmental Science,Whuhan University,Whuhan 430079,China;Shanghai Municipal Institute of Surveying and Mapping,Shanghai 200063,China)
出处
《测绘工程》
CSCD
2020年第2期23-29,共7页
Engineering of Surveying and Mapping
基金
国家自然科学基金资助项目(41871378
41471384)。
关键词
道路弯曲组
空间冲突
道路符号共线
协同移位
road bends
spatial conflict
collinearity of road symbol
collaborative displacement
