一种基于改进TDD模型的空间场景相似性度量方法  

A Method for Measuring Space Scene Similarity Based on Improved TDD Model

作　　者：王云阁 郭黎[1] 李豪 刘贺 WANG Yunge;GUO Li;LI Hao;LIU He(Information Engineering University, Zhengzhou 450001, China;32021 Troops, Beijing 100094, China)

机构地区：[1]信息工程大学,河南郑州450001 [2]32021部队,北京100094

出　　处：《测绘科学技术学报》2021年第3期309-315,共7页Journal of Geomatics Science and Technology

基　　金：国家科技基础资源调查专项(2019FY202501)。

摘　　要：针对计算空间场景相似性的TDD(Topology-Direction-Distance)模型的局限,提出一种基于改进的TDD模型来度量实体数目相同的场景相似度的算法。该算法以TDD模型的思想为核心,首先利用维度扩展的9交模型、详细方向关系矩阵模型和距离定量描述方法分别提取空间场景中的实体间拓扑、方向和距离特征,建立空间场景特征矩阵,实现对空间场景的表达;然后结合拓扑、方向关系的概念邻域方法和欧式距离,构建针对矢量面数据空间场景相似性度量模型;利用场景相似性度量模型进行空间场景相似性匹配;最后以深圳市福田区矢量面数据为例进行实验。实验结果表明该方法能有效度量空间场景的相似度。Aiming at the limitations of the TDD model for calculating the similarity of spatial scenes,an algorithm based on an improved TDD model is proposed to measure the similarity of scenes with the same number of entities in this paper.The idea of TDD model is taken as the core of the algotithm.Firstly,the expanded 9-intersection model,the detailed direction relationship matrix model and the distance quantitative description method are used to extract the topological feature,direction feature and distance feature between the spatial scene entities,and the spatial scene feature matrix is established to express the spatial scene.Then,combined with the conceptual neighborhood method of topology relationship,directional relationship and Euclidean distance,a spatial scene similarity measurement model for vector surface data is constructed,and the scene similarity measurement model is used to match the spatial scene similarity.Finally,the proposed method is demonstrated in the experiment using area vector surface data in Futian,Shenzhen.The experimental results show that this method can effectively measure the similarity of spatial scenes.

关 键 词：空间场景 相似性 改进的TDD模型 空间场景特征矩阵 概念邻域 

分 类 号：P208[天文地球—地图制图学与地理信息工程]