摘要
首先提出可视频度的概念、分类与描述方式,着重阐述了动态观测点和动态目标点可视频度分析的理论模型。通过样区实验,介绍了可视频度提取原理和应用,并制作了可视频度专题图。
This article firstly introduce the conception of Visibility Frequency Analysis(VFA)as well as its classification and characters.Then it mainly discusses the Visibility Frequency Analysis with mobile observer point and target point.Throught a case study we experiments and illustrates how to calculate visibility frequency based on DEM and discuss the avail of visibility frequency thematic mapping in various application areas.
出处
《现代测绘》
2007年第1期3-6,共4页
Modern Surveying and Mapping
基金
国家自然科学基金(40671148)
关键词
可视频度
可视域
DEM
动态GIS
Visibilit Frequency Analysis(VFA)
Viewshed
DEM
Mobile GIS
