| DEM格网与畸变遥感影像的一体化显示研究 |
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| 引用本文： | 李晓燕,潘懋,张传明.DEM格网与畸变遥感影像的一体化显示研究[J].地理与地理信息科学,2007,23(4):41-43. |
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| 作者姓名： | 李晓燕 潘懋 张传明 |
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| 作者单位： | 北京大学地球与空间科学学院造山带与地壳演化教育部重点实验室,北京,100871 |
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| 摘 要： | 遥感影像可以极大地增强DEM的表达效果,然而由于各种因素的影响,通常需对其进行预处理,传统方法是通过同名控制点进行校正。该文提出一种新的自动匹配算法,即提取DEM和遥感影像对应的特征线,利用Douglas-Peucker算法提取对应的特征点,以DEM特征点为离散点进行Delaunay三角剖分,并基于TIN完成纹理映射。实验结果表明,该算法显示效果较好,可有效改善畸变图像引起的错误显示。
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| 关 键 词： | DEM 遥感影像 特征匹配 |
| 文章编号： | 1672-0504（2007）04-0041-03 |
| 修稿时间： | 2007-02-272007-05-09 |
Integrated Display of DEM and Distorted Remote Sensing Image |
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| LI Xiao-yan,PAN Mao,ZHANG Chuan-ming.Integrated Display of DEM and Distorted Remote Sensing Image[J].Geography and Geo-Information Science,2007,23(4):41-43. |
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| Authors: | LI Xiao-yan PAN Mao ZHANG Chuan-ming |
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| Institution: | The Key Laboratory of Orogenic Belts and Crustal Evolution,MOE,College of Earth and Space Sciences, Peking University, Beijing 100871, China |
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| Abstract: | Remote sensing image can greatly enhance the expression effect of DEM data,but due to various factors,it usually needs to take pretreatment.The traditional approach for rectification is getting the same control points,but it does not work on DEM.This paper presents a new method to solve this problem in the following steps: firstly,getting control lines from DEM and remote sensing image respectively,and then getting characteristic points by Douglas-Peucker algorithm,finally constructing Delaunay triangulation and performing texture mapping based on TIN.The experiment results show that the new approach improves the aberration and has a better display effect. |
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| Keywords: | DEM remote sensing image feature matching |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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