三维立交结构的欧拉图表达及交互设计方法

Euler Diagram Expression and Interactive Design Method of Three-Dimensional Interchange Structure

针对已有的道路建模技术中建模效果不理想,在大尺度道路网建模中缺乏有效的辅助交互技术支持的问题,通过对立交结构进行分析,提出一种有效的三维立交结构的欧拉图表达及交互设计方法.首先将道路信息预处理,根据处理后的有效数据构建欧拉图,用来表达道路立交结构的拓扑关系;然后利用欧拉图和道路的结构特性计算得到道路的层级关系;再根据控制点、欧拉图的拓扑信息和道路网格,构建立交结构的三维模型;最终构建辅助信息工具,实现对道路网的交互编辑.选取多个类型的立交结构道路网进行实验,结果证明,所提方法在立交结构类型上的应用更广泛,在计算正确率、优化交互编辑过程上有一定优势.

Aiming at the problems of unsatisfactory modeling effect in the existing road modeling technology and lack of effective auxiliary interactive technical support in large-scale road network modeling,through the analysis of interchange structure,an effective Euler diagram expression and interactive design method of three-dimensional interchange structure is proposed.Firstly,the data source is preprocessed,and the Euler diagram is generated according to the processed effective road information,which is used to express the topological relationship of the road interchange structure;then the hierarchy relationship of the road is calculated by using the Euler diagram and the structural characteristics of the road.And then according to the control point,Euler diagram topology information and road grid,construct a three-dimensional model of the interchange structure.Finally auxiliary information tools are established to realize interactive editing of the road network.The experimental results of selecting multiple types of interchange structure road networks prove that the method has a wider application range in the types of interchange structure types,and has certain advantages in calculating the correct rate and optimizing the interactive editing process.