| 基于1∶10000地形数据更新1∶50000 DEM的研究试验 |
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| 引用本文： | 段修梅,王东华,赵仁亮.基于1∶10000地形数据更新1∶50000 DEM的研究试验[J].地理信息世界,2012(1):39-42. |
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| 作者姓名： | 段修梅 王东华 赵仁亮 |
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| 作者单位： | 中南大学地球科学与信息物理学院;国家基础地理信息中心 |
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| 摘 要： | 对1:50 000 DEM数据库的现状进行了分析,提出了利用1:10 000地形数据更新1:50 000 DEM的主要内容和两种方法,简要介绍了地形变化检测方法。通过对试验区规则格网DEM成果的精度检查验证了方法的可行性。客观分析了本次试验的特点和不足,为以后大比例尺地形数据更新小比例尺DEM等相关工作提供了技术参考。
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| 关 键 词： | DEM更新 地形变化检测 规则格网DEM 精度检查 |
The Research on Test Methods of Updating 1:50000 Scale DEM Based on 1:10000 Scale Topographic Data |
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| DUAN Xiu-mei,WANG Dong-hua,ZHAO Ren-liang.The Research on Test Methods of Updating 1:50000 Scale DEM Based on 1:10000 Scale Topographic Data[J].Geomatics World,2012(1):39-42. |
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| Authors: | DUAN Xiu-mei WANG Dong-hua ZHAO Ren-liang |
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| Institution: | 1.School of Geosciences and Info-Physics,Central South University,Changsha 41008,China;2.National Geomatics Center of China,Beijing 100830,China) |
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| Abstract: | This paper analyzed the current situation of the 1:50 000 scale DEM database,put forward the content and two methods of 1:50 000 scale DEM updating utilizing 1:10 000 scale terrain data,and introduced the technology of terrain change detection briefly.Through precision check of the grid DEM results of the test regions,the feasibility of the methods were verified.Finally,the characteristics and the insufficiency of this test were analyzed objectively,technical reference for small scale DEM updating with big terrain data and the other relative work were offered. |
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| Keywords: | updating of 1 000 scale DEM terrain change detection regular grid DEM precision check |
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