| 基于差值权重和快速傅立叶变换的“北京一号”卫星影像融合方法研究 |
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| 引用本文： | 陈生,骆剑承,沈占锋,郜丽静,周小成. 基于差值权重和快速傅立叶变换的“北京一号”卫星影像融合方法研究[J]. 地理与地理信息科学, 2009, 25(3) |
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| 作者姓名： | 陈生 骆剑承 沈占锋 郜丽静 周小成 |
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| 作者单位： | 1. 中国科学院遥感应用研究所,北京,100101
2. 福州大学福建省空间信息工程研究中心,福建,福州,350002 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划)，福建省科技厅重点项目 |
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| 摘 要： | 提出一种基于差值权重和快速傅立叶变换的影像融合方法--DWF,对"北京一号"小卫星的全色和多光谱影像进行融合.该算法根据卫星影像的成像过程,通过傅立叶变换获取全色影像的高频、低频信息和多光谱影像在HIS颜色空间中分量的低频信息,由这3种信息通过基于差值权重的决策计算获得融合影像的空间信息.实验采用PCA、GS、DWF以及基于小波的HIS变换的融合方法,结果表明DWF方法优于其他融合方法,比较适合于"北京一号"卫星的全色与多光谱影像融合.
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| 关 键 词： | " 北京一号" 卫星 快速傅立叶变换 影像融合 |
Study on Fusion Method Based on Difference-Weight and FFT for "BJ-1" Microsatellite Imagery |
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| CHEN Sheng,LUO Jian-cheng,SHEN Zhan-feng,GAO Li-jing,ZHOU Xiao-cheng. Study on Fusion Method Based on Difference-Weight and FFT for "BJ-1" Microsatellite Imagery[J]. Geography and Geo-Information Science, 2009, 25(3) |
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| Authors: | CHEN Sheng LUO Jian-cheng SHEN Zhan-feng GAO Li-jing ZHOU Xiao-cheng |
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| Affiliation: | 1.Institute of Remote Sensing Application;Chinese Academy of Sciences;Beijing 100101;2.Spatial Information Research Center of Fujian Province;Fuzhou University;Fuzhou 350002;China |
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| Abstract: | A difference-weight-based FFT-enhanced transform fusion(DWF)method is put forward in this paper to fuse "BJ-1" microsatellite imagery.For DWF the imaging process is taken into account,the fast fourier transform(FFT) is applied to the panchromatic(PAN) and multi-spectral(MS) images to get the high-frequency parts of PAN image,and the low-frequency parts of PAN and MS images,then a difference-weight-based decision computation is applied to get the spatial information for the fused image.Experimental results s... |
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| Keywords: | " BJ-1" microsatellite FFT imagery fusion |
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