| 基于重构等高线的格网细化模型 |
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| 引用本文： | 王志伟,朱长青,石忠合.基于重构等高线的格网细化模型[J].测绘工程,2007,16(1):39-41,54. |
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| 作者姓名： | 王志伟 朱长青 石忠合 |
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| 作者单位： | 信息工程大学,测绘学院,河南,郑州,450052;郑州测绘学校,河南,郑州,450052 |
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| 摘 要： | 以规则格网DEM为基础,利用回放等高线与原等高线进行比较,提出两个误差指标和一种格网细化模型,以生成多分辨率的格网DEM,并提高DEM的等高线精度。针对该模型的两个关键步骤,进行了较为详细的论述。通过对一幅实际地形数据进行试验,比较不同方法得出的DEM等高线精度,为DEM精度研究,特别是多分辨率DEM精度研究,提供了一种新的方法和思路。
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| 关 键 词： | 等高线 格网细化 回放误差 精度 |
| 文章编号： | 1006-7949（2007）01-0039-03 |
| 收稿时间： | 2006-09-29 |
| 修稿时间： | 2006-09-29 |
The grid-fractionizing model based on the reconstructed contour lines |
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| WANG Zhi-wei,ZHU Chang-qing,Shi Zhong-he.The grid-fractionizing model based on the reconstructed contour lines[J].Engineering of Surveying and Mapping,2007,16(1):39-41,54. |
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| Authors: | WANG Zhi-wei ZHU Chang-qing Shi Zhong-he |
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| Institution: | 1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, China; 2. Surveying School of ZhengZhou, Zhengzhou 450052, China |
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| Abstract: | In this paper,based on the GRID-DEM,the reconstructed contour lines are compared with the original contour lines.We bring torward two error target and build a grid-fractionizing model for GRID-DEM,for generating multi-resolution GRID-DEM and improving the DEM contour-accuracy.The two key-approaches are discussed detailedly.We experiment using one terrain-data,and compare the results,which are produced by different methods.The results obtained in the paper supply a new approach for studying GRID-DEM accuracy,especially the multi-resolution DEM. |
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| Keywords: | contour lines grid-fractionizing model reconstructed error accuracy |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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