浅论自发地理信息的数据管理

基金项目: 国家863计划资助项目(2009AA121404)；国家自然科学基金资助项目(10978003)；武汉大学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；IPV6重大应用示范资助项目(126)

详细信息

A Brief Introduction of Data Management for Volunteered Geographic Information

¹State Key Laboratory of Information Engineering of Surveying,Mapping and Remote Sensing,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家863计划资助项目(2009AA121404)；国家自然科学基金资助项目(10978003)；武汉大学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；IPV6重大应用示范资助项目(126)

摘要: 分析了自发地理信息(volunteered geographic information,VGI)数据的来源、分类、特点与管理要求,探讨了VGI数据清理与质量控制,研究了以高效处理绘图查询与数据更新为目标的VGI图形数据管理问题,提出了动态线综合二叉树与缩放四叉树的设计思想,以解决VGI图形数据管理中的难点问题。
- 自发地理信息 /
- 数据管理 /
- 绘图查询 /
- 动态线综合二叉树 /
- 缩放四叉树
Abstract: Volunteered Geographic Information(VGI) is a new concept emerging with the development of geographic information science.This paper briefly analyses the sources,categories and characteristics of VGI data,presents the requirement of VGI data management,discusses the issues of data cleaning and quality control,focuses on the research of the VGI data management whose target is high performance processing of plotting queries and data updates.Two kinds of spatial data structures are presented.Dynamic binary line generalization tree,which is an extension to binary line generalization tree(BLG-tree),is designed to process the queries and updates of a single spatial object.Zoom quadtree,which includes two quadtree that function as spatial indexes and materialized views,is designed to index and organize the voluminous spatial objects.
- VGI /
- data management /
- plotting query /
- dynamic binary line generalization tree /
- zoom quadtree