地理科学

地理科学 ›› 1999, Vol. 19 ›› Issue (2): 147-151.doi: 10.13249/j.cnki.sgs.1999.02.147

• 论文 • 上一篇    下一篇

三维地形模型光照和动态显示的新方法

谢顺平, 田德森   

  1. 南京大学城市与资源学系 南京 210093
  • 收稿日期:1997-03-31 修回日期:1998-01-08 出版日期:1999-03-20 发布日期:1999-03-20
  • 基金资助:
    国家自然科学基金(批准号49571059)

A NEW METHOD OF 3-D TERRAIN MODEL OF ILLUMINATION AND DYNAMIC DISPLAY

Xie Shunping, Tian Desen   

  1. Departmemt of Urban and Resources Sciences, Nanjing University, Nanjing 210093
  • Received:1997-03-31 Revised:1998-01-08 Online:1999-03-20 Published:1999-03-20

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被引次数

19

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和方法,此外还讨论了适合微机动态显示三维地形模型的方法。

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.

中图分类号: 

  • P231.5