| 基于小波包变换距离特征选取的遥感影像融合 |
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| 引用本文： | 魏从玲,王建力.基于小波包变换距离特征选取的遥感影像融合[J].地理空间信息,2008,6(2):74-77. |
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| 作者姓名： | 魏从玲 王建力 |
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| 作者单位： | 西南大学,地理科学学院,重庆,400715 |
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| 基金项目： | 教育部高校骨干教师资助计划 |
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| 摘 要： | 介绍了基于小波包变换和距离特征选取的影像融合方法：首先对多光谱影像做IHS变换；其次对多光谱影像的亮度分量和全色影像做小波包变换并分别采用加权平均法和距离特征选取法融合低频部分和高频部分；最后通过小波包重构和IHS逆变换得到最终的融合影像。以ERDAS8．5软件自带的影像文件为例对这种方法进行了实验，并利用信息熵等标准与其他融合方法进行了比较，实验结果表明该方法能得到更好的融合效果。
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| 关 键 词： | 遥感 IHS变换 小波包变换 影像融合 距离特征选取法 |
Remote Sensing Image Fusion Based on Distance Feature Selection of Wavelet Packet Transform |
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| WEI Congling,WANG Jianli.Remote Sensing Image Fusion Based on Distance Feature Selection of Wavelet Packet Transform[J].Geospatial Information,2008,6(2):74-77. |
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| Authors: | WEI Congling WANG Jianli |
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| Institution: | (College of Geography Science, Southwest University, Chongqing 400715, China) |
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| Abstract: | The fusion method of remote sensing image based on wavelet packet transform and distance feature se- lection was introduced. Firstly, the multi_spectral image was transformed by using IHS Transform;secondly, using wavelet packet transform, the intensity element of the multi_spectral and the panchromatic image were trans- formed, and the approximate element was fused by weight averaging method and the detail element was fused by distance feature selection method; lastly, through wavelet packet recomposition and inverse IHS transform, the fused image was obtained. Taking example for image from ERDAS 8.5, the method was realized. Using information entropy etc., the method was compared with the other methods, the results of the experiment showed that the effect of this method is more satisfactory. |
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| Keywords: | remote sensing IHS transform wavelet packet transform image fusion distance feature selection |
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