杨乃, 郭庆胜, 沈大勇. 三维陡崖符号的自动建模研究[J]. 武汉大学学报 ( 信息科学版), 2010, 35(4): 411-414.
引用本文: 杨乃, 郭庆胜, 沈大勇. 三维陡崖符号的自动建模研究[J]. 武汉大学学报 ( 信息科学版), 2010, 35(4): 411-414.
YANG Nai, GUO Qingsheng, SHEN Dayong. Automatic Modeling of 3D Cliff Symbol[J]. Geomatics and Information Science of Wuhan University, 2010, 35(4): 411-414.
Citation: YANG Nai, GUO Qingsheng, SHEN Dayong. Automatic Modeling of 3D Cliff Symbol[J]. Geomatics and Information Science of Wuhan University, 2010, 35(4): 411-414.

三维陡崖符号的自动建模研究

Automatic Modeling of 3D Cliff Symbol

  • 摘要: 针对三维地形图中某些地貌符号难以建模的问题,以陡崖符号为例,提出了一种基于不规则三角网自动提取陡崖边缘线的方法,根据不同光照条件下的视觉感受规律,建立了陡崖符号的光照模型,并对其数学表达进行了研究,介绍了陡崖符号的自动建模流程,有助于其他类似地貌符号模型的自动建立。

     

    Abstract: In view of some relief symbols are difficult to build the modeling in 3D topographic map,we take cliff symbol as the example to propose a method to exact the edge lines of cliff based on TIN,set up an illumination model of cliff symbol according to the visual sensation rules under the different illumination conditions and research the mathematical expression of it,and introduce the automatic modeling flows of cliff symbol.The experiment proves that it is feasible.The study will be helpful to build the modeling of other similar relief symbols automatically.

     

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