| 城市景观三维重建中的三角剖分算法 |
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| 引用本文： | 殷勇,俞连芳,马照亭,李成名.城市景观三维重建中的三角剖分算法[J].测绘科学,2008,33(4). |
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| 作者姓名： | 殷勇 俞连芳 马照亭 李成名 |
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| 作者单位： | 中国测绘科学研究院,北京,100039;湖州市测绘院,浙江,湖州313000 |
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| 基金项目： | 地理空间信息工程国家测绘局重点实验室经费资助项目 |
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| 摘 要： | 在构建城市景观时,为了快速精确地重建建筑物、绿地、河流等三维模型,提高自动化程度,缩短建设周期,需对用户采集的矢量地物数据进行三角剖分,再以OpenGL重绘三维模型。本文提出了一种对多边形进行三角剖分的递归分割算法,并以VisualC++实现,以实际的4万多个建筑物进行三角剖分实验,充分证明其是有效的。
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| 关 键 词： | 数字城市 三角剖分 三维GIS OpenGL |
Triangulation algorithm for the reconstruction of 3D city view |
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| YIN Yong,YU Lian-fang,MA Zhao-ting,LI Cheng-ming.Triangulation algorithm for the reconstruction of 3D city view[J].Science of Surveying and Mapping,2008,33(4). |
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| Authors: | YIN Yong YU Lian-fang MA Zhao-ting LI Cheng-ming |
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| Abstract: | While setting up city view,triangulation and OpenGL-based 3D model redrawing should be performed for the vector data collected by user,which can reconstruct 3D models,such as building,greenbelt,river etc.,quickly and accuriately,improve automation degree,and shorten the construction period.So a triangulation recursion algorithm is proposed in this paper.The algorithm is designed with Visual C programming,and experimented with triangulating physically more than 40,000 buildings.It proves that the algorithm is effective. |
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| Keywords: | digital city triangulation 3D GIS openGL |
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