| 三维地形模型光照和动态显示的新方法 |
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| 引用本文： | 谢顺平,田德森.三维地形模型光照和动态显示的新方法[J].地理科学,1999,19(2):147-151. |
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| 作者姓名： | 谢顺平 田德森 |
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| 作者单位： | 南京大学城市与资源学系,南京,210093 |
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| 摘 要： | 介绍了一种具有真实感的三维地形模型光照显示的新方法，给出了相应的构建多精度数字高程模型ＤＥＭ的步骤，并讨论了适应三维地形模型光照显示的消隐，可见性测试，光照模型，浓淡处理等处理算法的方法，此外还讨论了适合身机动态显示三维地形模型的方法。
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| 关 键 词： | 数字高程模型 地表面元 光照模型 动态显示 |
A NEW METHOD OF 3-D TERRAIN MODEL OF ILLUMINATION AND DYNAMIC DISPLAY |
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| Xie Shunping,Tian Desen.A NEW METHOD OF 3-D TERRAIN MODEL OF ILLUMINATION AND DYNAMIC DISPLAY[J].Scientia Geographica Sinica,1999,19(2):147-151. |
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| Authors: | Xie Shunping Tian Desen |
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| Institution: | Xie Shunping;(Departmemt of Urban and Resources
Sciences, Nanjing University, Nanjing 210093) |
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| Abstract: | A New Method of three dimensional terrain model of illumination and dynamic display proposed by the authors, which is the most realistic. The procedure of created different level of detail DEM are given, and processing algorithm and methods appropriate to 3 D terrain model, such as illumination model, hidden surfacese limination, visibility test and shading, are disscussed. Furthermore, dynamic display method of 3 D terrain model appropriate to micro-computer is also discribed in this paper. |
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| Keywords: | Digital Elevation Model Landsurface cell Illumination model Dynamic display |
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