一种VGI矢量数据增量变化发现的多层次蔓延匹配算法  

A VGI Vector Road Data Increment Distinguishing Research Based on Multilevel Spreading Algorithm

作　　者：田文文[1] 朱欣焰[1,2] 呙维[1] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079 [2]武汉大学空天信息安全与可信计算教育部重点实验室,湖北武汉430079

出　　处：《武汉大学学报（信息科学版）》2014年第8期963-967,973,共6页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(412714013);国家863计划资助项目(2013AA12A203);测绘遥感信息工程国家重点实验室专项科研经费资助项目~~

摘　　要：矢量要素的匹配是发现地物要素变化的重要方法之一,高精度的匹配结果有助于更快地发现变化地物,进行更新。VGI矢量数据具有几何和语义信息丰富的特点,但使用传统的矢量要素匹配算法难以发挥VGI矢量数据的优势。以城市VGI道路数据为研究内容,提出基于多层次蔓延的矢量要素匹配算法,将VGI数据和专业测绘数据进行匹配对比,从而实现道路变化增量信息的快速识别。Volunteered geographic information （VGI） contributed by Internet users is more and more widely used as data updating source for industries such as navigation, and for disaster emergencies. This way of data acquisition is faster and cheaper than traditional surveying and mapping data. How to detect and extract changed information in massive amounts of VGI data in a timely way is a problem to be solved. The high precision results of vector feature matching can help to find the changed features faster. VGI vector data has rich geometric and semantic information, traditional vector feature matching algorithm is not suitable for this purpose. In this paper, we proposed a multilevel spreading algorithm in vector feature matching, and applied the city road network as the research content, to compare VGI vector data to the data from the professional surveying and mapping departments to realize the change detection in a road network.

关 键 词：自发地理信息 多层次蔓延匹配算法 矢量数据匹配 数据更新 

分 类 号：P208[天文地球—地图制图学与地理信息工程]