| 基于Gram Schmidt变换的高光谱遥感图像改进融合方法 |
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| 引用本文： | 于海洋,闫柏琨,甘甫平,迟文学,武法东.基于Gram Schmidt变换的高光谱遥感图像改进融合方法[J].地理与地理信息科学,2007,23(5):39-42. |
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| 作者姓名： | 于海洋 闫柏琨 甘甫平 迟文学 武法东 |
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| 作者单位： | 1. 中国地质大学(北京)地球科学与资源学院,北京,100083
2. 中国国土资源航空物探遥感中心,北京,100083 |
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| 基金项目： | 中国地质调查局地质调查计划项目“全波段定量化遥感技术及其在资源环境中的应用研究”(1212010660600) |
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| 摘 要： | 遥感图像融合的目的是综合来自不同空间分辨率和光谱分辨率的遥感信息,生成一幅具有新空间和波谱特征的合成图像。针对高光谱图像的特点,对基于Gram Schmidt变换的图像融合方法进行改进,首先采用光谱重采样方法模拟产生Gram Schmidt变换的第一分量,通过Gram Schmidt变换将高光谱图像转换到正交空间,再利用高空间分辨率图像替换Gram Schmidt变换的第一分量,最后通过Gram Schmidt反变换获得融合图像。利用EO1-Hyperion航天高光谱数据与ALI全色波段进行融合试验,发现改进方法可有效提高高光谱遥感图像与全色高分辨率图像的融合质量。
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| 关 键 词： | Gram Schmidt变换 高光谱图像 光谱重采样 图像融合 |
| 文章编号： | 1672-0504（2007）05-0039-04 |
| 修稿时间： | 2007-03-06 |
Hyperspectral Image Fusion by an Enhanced Gram Schmidt Spectral Transformation |
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| YU Hai-yang,YAN Bo-kun,GAN Fu-ping,CHI Wen-xue,WU Fa-dong.Hyperspectral Image Fusion by an Enhanced Gram Schmidt Spectral Transformation[J].Geography and Geo-Information Science,2007,23(5):39-42. |
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| Authors: | YU Hai-yang YAN Bo-kun GAN Fu-ping CHI Wen-xue WU Fa-dong |
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| Institution: | 1. College of Earth Sciences and Resources, China University of Geosciences (Beijing |
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| Abstract: | Remote sensing image fusion techniques aim at integrating the information conveyed by data acquired with different spatial and spectral resolution.A method for hyperspectral data fusion based on enhanced Gram Schmidt transformation was put forward.Aiming at the characteristic of hyperspectral data,the first vector of Gram Schmidt transformation was simulated with spectral resampling method.The spatial resolution of the fused image was enhanced,and the spectral characteristic of hyperspectral data was well preserved.EO1-Hyperion hyperspectral data and ALI high-resolution pan image was used in the study.The result of the experiment shows that the enhanced method is effective. |
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| Keywords: | Gram Schmidt transformation hyperspectral image spectral resampling method image fusion |
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