摘要
针对当前真三维地理信息系统中点状地理要素三维可视化数据量过大的问题,研究应用虚拟现实技术,在分形方法的基础上结合视觉原理采用几何实体与贴图纹理相结合的方式,提出了几种点状地理要素的表达方案,并编程实现了点状地理要素的建模、检索及调用等功能;在多个项目中得到较好实践应用。
In view of current really three dimensional geographic information system in punctual feature three dimensional visualization data quantity oversized question, research application virtual reality technology, unifies the visual principle in the fractal method foundation to use the geometry entity with to paste the way which the chart texture unifies, proposed several kind of punctual feature expression plan, and programmed has realized punctual functions and so on feature modeling, search that and calling, Obtains the good practice application in many projects.
出处
《测绘科学》
CSCD
北大核心
2008年第5期126-128,共3页
Science of Surveying and Mapping
基金
地理空间信息工程国家测绘局重点实验室资助项目(课题编号200607)
关键词
点状要素
三维可视化
立体纹理模型
编辑
调用
punctual essential factor
three dimensional visualization
three - dimensional texture model
edition
transfer
