| 多时相遥感图像相对辐射校正 |
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| 引用本文： | 张鹏强,余旭初,刘智,李建胜,万刚.多时相遥感图像相对辐射校正[J].遥感学报,2006,10(3):339-344. |
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| 作者姓名： | 张鹏强 余旭初 刘智 李建胜 万刚 |
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| 作者单位： | 信息工程大学,测绘学院,河南,郑州,450052 |
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| 摘 要： | 相对辐射校正是多时相遥感图像处理和分析的前提.本文分析了几种常规的相对辐射校正方法的优缺点,然后在此基础上提出了一种基于小波变换的遥感图像相对辐射校正方法.该方法对源图像小波变换域的低频成分实施辐射变换,并保持高频成分不变,重构的图像具有保持高频信息的特性,因而能够较好地保留源图像中由于地物变化引起的辐射差异.
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| 关 键 词： | 多时相遥感图像 辐射校正 灰度分布 辐射特性 小波变换 |
| 文章编号： | 1007-4619(2006)03-0339-06 |
| 收稿时间： | 2005-03-28 |
| 修稿时间： | 2005-08-19 |
A Study on Relative Radiometric Correction of Multitemporal Remote Sensing Images |
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| ZHANG Peng-qiang,YU Xu-chu,LIU Zhi,LI Jian-sheng and WAN Gang.A Study on Relative Radiometric Correction of Multitemporal Remote Sensing Images[J].Journal of Remote Sensing,2006,10(3):339-344. |
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| Authors: | ZHANG Peng-qiang YU Xu-chu LIU Zhi LI Jian-sheng and WAN Gang |
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| Institution: | Institute of Surveying and Mapping, Information Engineering University, Henan, Zhengzhou 450052, China |
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| Abstract: | The relative radiometric correction is the first step of processing and analyzing of multitemporal remote sensing images. In this paper, a new method based on wavelet transform is proposed on the basis of a through study on the three traditional ones. This new method was implemented by doing relative radiometric correction only on the low frequency component of wavelet transform domain of the source image, and just remaining the high frequency components unchanged. The reconstructed image has the characteristic of keeping the high frequency information, so the radiometric diversities in the source image due to ground changes are reserved. |
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| Keywords: | multitemporal remote sensing images radiometric correction gray level distribution radiometric characteristic wavelet transform |
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