| 数字摄影测量系统生成的DEM数据精度的确定 |
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| 引用本文： | 秦丽萍.数字摄影测量系统生成的DEM数据精度的确定[J].测绘学院学报,1997(4). |
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| 作者姓名： | 秦丽萍 |
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| 作者单位： | 郑州解放军测绘学院!郑州，1450052 |
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| 摘 要： | 论述一个由数字化画幅式像片（或数字影像）用数字摄影测量系统生成的DEM数据精度的确定方法。该方法的特点是只使用数字摄影测量系统的观测,避免了其它测量系统（如解析测图仪）的影响。通过在数字视频测图仪（DVP）上所作的大量实验证明本文中设计的方法是普遍实用的。实验结果表明,影响DEM数据的精度的主要因素是像元大小。
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| 关 键 词： | 数字摄影测量系统 DEM数据的精度 像元大小 像片比例尺 地形类型 影像位置 |
Determination of Accuracy of DEM Data Derived from Digital Photogrammetric Systems |
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| Qin Liping.Determination of Accuracy of DEM Data Derived from Digital Photogrammetric Systems[J].Journal of Institute of Surveying and Mapping,1997(4). |
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| Authors: | Qin Liping |
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| Abstract: | In this paper,a method used for determination of accuracy of DEM data derived from digitized frame photos(or digital image) by digital photogrammetric systems has been developed. This procedure is characterized by use of only the measurements made on the digital systems,thus avoidable of influence from other meansuring systems,such as analytical plotters. A large volume of experiments made on the Digital Video Plotter(DVP)by the author has shown that the method proposed is generally practicable. Experimental results indicate that the main influencing factor on the accuracy of DEM data is pixel size. |
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| Keywords: | Digital photogrammetric system Accuracy of DEM data Pixel size Photo scale Terrain type Imege position |
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