| 一种面向海量离散数据的TIN快速构建算法研究 |
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| 引用本文： | 刘刚,李永树,张水舰. 一种面向海量离散数据的TIN快速构建算法研究[J]. 测绘科学, 2011, 36(5): 172-174 |
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| 作者姓名： | 刘刚 李永树 张水舰 |
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| 作者单位： | 西南交通大学地理信息工程中心,成都,610031 |
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| 基金项目： | “十一五”国家科技支撑计划课题(2006BAJ05A13) |
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| 摘 要： | 不规则三角网建模(TIN)是一个非常重要的表面建模方法.为提高模型的构建效率,本文采用图像处理的手段和合理的数据结构,提出了一种基于像元的TIN快速构建算法.该算法通过在地理离散数据与像元之间建立一种对应关系,使得在整个不规则三角网构建过程中就可以通过索引直接获取相应的离散点或像元点,实现地理离散点与像元点之间的实时动...
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| 关 键 词： | 不规则三角网 TIN快速构建算法 基于像元 动态搜索 |
Speedy construction algorithm of TIN based massive discrete data |
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| LIU Gang,LI Yong-shu,ZHANG Shui-jian. Speedy construction algorithm of TIN based massive discrete data[J]. Science of Surveying and Mapping, 2011, 36(5): 172-174 |
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| Authors: | LIU Gang LI Yong-shu ZHANG Shui-jian |
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| Affiliation: | LIU Gang,LI Yong-shu,ZHANG Shui-jian(Geography Information Engineering Centre,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Triangular Irregular Network(TIN) is an important method of surfacing construction.In order to improve the efficiency of TIN modeling,with image processing means and reasonable data structures,an efficient algorithm was proposed for the speedy construction of TIN based on pixel in the paper.In this algorithm,a special relationshi Pbetween discrete data and pixel data was established firstly,according to this relationship,the whole process of TIN modeling could be easy to get the corresponding discrete data ... |
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| Keywords: | Trianglar Irregular Network(TIN) speedy construction of TIN pixel-based dynamic search |
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