| 真三维地理信息系统中点状地理要素的表达与实现 |
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| 引用本文： | 关艳玲,左建章,黄永定.真三维地理信息系统中点状地理要素的表达与实现[J].测绘科学,2008,33(5). |
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| 作者姓名： | 关艳玲 左建章 黄永定 |
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| 作者单位： | 中国测绘科学研究院,北京,100039;贵港市勘察测绘研究院,广西,贵港,537100 |
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| 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。
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| 关 键 词： | 点状要素 三维可视化 立体纹理模型 编辑 调用 |
In the really three dimensional geographic information system the punctual feature expression with realizes |
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| GUAN Yan-ling,ZUO Jan-zhang,HUANG Yong-ding.In the really three dimensional geographic information system the punctual feature expression with realizes[J].Science of Surveying and Mapping,2008,33(5). |
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| Authors: | GUAN Yan-ling ZUO Jan-zhang HUANG Yong-ding |
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| Abstract: | 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's foundation to use the geometry entity with to paste the way which the chart texture unifies,proposed several kind of punctual feature's 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. |
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| Keywords: | punctual essential factor three dimensional visualization three-dimensional texture model edition transfer |
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