东南大学学报（英文版）2020，Vol.36Issue(3)：264-272,9.DOI:10.3969/j.issn.1003-7985.2020.03.003
用于增强型数字地图的特殊交叉路口道路建模
Modeling the special intersections for enhanced digital map
摘要
Abstract
A new lane-level road modeling method based on cardinal spline is proposed for the special intersections which are covered by vegetation or artificial landscape in their central regions.First,cardinal spline curves are used to fit the virtual lanes inside special intersections,and an initial road model is established using a series of control points and tension parameters.Then,the progressive optimization algorithm is proposed to determine the final road model based on the initial model.The algorithm determines reasonable control points and optimal tension parameters according to the degree of road curvature changes,so as to achieve a balance between the efficiency and reliability of the road model.Finally,the proposed intersection model is verified and evaluated through experiments.The results show that this method can effectively describe the lane-level topological relationship and geometric details of this kind of special intersection where the central area is covered by vegetation or artificial landscape,and can achieve a good balance between the efficiency and reliability of the road model.关键词
增强型数字地图/车道级/交叉路口模型/cardinal样条Key words
enhanced digital map/lane-level/intersection model/cardinal spline分类
交通工程引用本文复制引用
倪培洲,李旭,夏亮,黄亮..用于增强型数字地图的特殊交叉路口道路建模[J].东南大学学报（英文版）,2020,36(3):264-272,9.基金项目
The National Natural Science Foundation of China (No.61973079,61273236),the Program for Special Talents in Six Major Fields of Jiangsu Province (No.2017JXQC-003). （No.61973079,61273236）
