| 利用等高线栅格化的DEM精度评估 |
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| 引用本文： | 王俊, 江帆, 朱长青, 张跃. 利用等高线栅格化的DEM精度评估[J]. 武汉大学学报 ( 信息科学版), 2009, 34(8): 952-955. |
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| 作者姓名： | 王俊 江帆 朱长青 张跃 |
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| 作者单位： | 1信息工程大学测绘学院,郑州市陇海中路66号,450052;2军事经济学院训练部战争经济实验室,武汉市罗家墩122号,430035;3军事经济学院军队采办系,武汉市罗家墩122号,430035;4南京师范大学虚拟地理环境教育部重点实验室,南京市文苑路1号,210054 |
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| 基金项目： | 国家973计划资助项目(2006CB701302)；国家自然科学基金资助项目(40401052,40501058) |
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| 摘 要： | 提出了利用等高线栅格化方法,逐行扫描原始等高线和重构等高线,并以不同数值分别填充原始等高线与重构等高线区域,研究了基于不规则三角网和规则格网重构等高线的DEM精度评估,得出了等高线栅格化时采用的格网间距与DEM精度关系,评价DEM与实际地形吻合的情况。
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| 关 键 词： | DEM 不规则三角网 重构等高线 |
| 收稿时间： | 2009-06-04 |
| 修稿时间： | 2009-06-04 |
Estimate the Accuracy of DEM Based on Reconstructed Contours |
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| WANG Jun, JIANG Fan, ZHU Changqing, ZHANG Yue. Estimate the Accuracy of DEM Based on Reconstructed Contours[J]. Geomatics and Information Science of Wuhan University, 2009, 34(8): 952-955. |
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| Authors: | WANG Jun JIANG Fan ZHU Changqing ZHANG Yue |
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| Affiliation: | 1 Institute of Surveying and Mapping,Information Engineering University,66 Middle Longhai Road,Zhengzhou 450052,China;2 Training Department,Military Economy Academy,122 Luojiadun,Wuhan 430035,China;3 Department of Military Acquisition,Military Economy Academy,122 Luojiadun,Wuhan 430035,China;4 Key Laboratory of Virtual Geographic Environment,Nanjing Normal University,1 Wenyuan Road,Nanjing 210054,China |
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| Abstract: | Considering rasterizing contours—line-by-line scanning the original contour and the reconstructed one,and marking the area of the original contour and the reconstructed one by different numbers,we estimate the accuracy of DEM of TIN and grid which based on reconstructed contours,and make conclusion about the relation between different grid distances and accuracy of DEMs,then evaluate the degree of the DEM was consistent with the terrain relief. |
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| Keywords: | DEM triangulated irregular network contour |
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