| 顾及道路等级的几何信息量量测方法 |
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| 引用本文： | 王红,苏山舞,李玉祥.顾及道路等级的几何信息量量测方法[J].测绘科学,2010,35(2):75-77. |
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| 作者姓名： | 王红 苏山舞 李玉祥 |
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| 作者单位： | 辽宁工程技术大学,辽宁,阜新,123000;中国测绘科学研究院,北京,100039;中国测绘科学研究院,北京,100039 |
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| 摘 要： | 几何信息量量测是地理信息量量测最重要的方面之一。本文在分析比较了常规几何信息量量测方法的基础上,从道路的等级信息出发,提出一种顾及道路等级信息的几何信息量测思想,并用加权熵和密度图等方法实现,实验证明这种顾及道路等级的几何信息量测能较准确反映道路的分布规律和不同等级的要素造成的信息量差别。
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| 关 键 词： | 几何信息量 密度图 加权熵 道路等级 |
Geometric information measurement of road layer in topographic database considering road classes |
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| WANG Hong,SU Shan-wu,LI Yu-xiang.Geometric information measurement of road layer in topographic database considering road classes[J].Science of Surveying and Mapping,2010,35(2):75-77. |
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| Authors: | WANG Hong SU Shan-wu LI Yu-xiang |
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| Abstract: | Geometric information measurement is the most important aspect of spatial information measuring.In this paper,based on analysis of normal methods of geometric information measuring,the authors provided an idea of geometric information considering feature classes,and accomplished it by means of weighted entropy and density map.The experiment about road layers in topographic database proved that this kind of geometric information measurement considering feature classes could reveal the distribution of features and reflect the differences of geometric information according to their classes. |
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| Keywords: | geometric information density map weighted entropy road class |
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