利用快速离散Curvelet变换的遥感影像融合

基金项目: 国家973计划资助项目(2010CB731800)；国家863计划重点资助项目(2009AA121404)；国家自然科学基金资助项目(40801165,10978003)；中央高校基本科研业务费专项资金资助项目(20082130101000046)

详细信息

Fusion of Remote Sensing Images Based on Fast Discrete Curvelet Transform

¹ School of Remote Sensing and Information Engineering,Wuhan University,129 Luoyu Road,Wuhan 430079,China;² State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家973计划资助项目(2010CB731800)；国家863计划重点资助项目(2009AA121404)；国家自然科学基金资助项目(40801165,10978003)；中央高校基本科研业务费专项资金资助项目(20082130101000046)

摘要: 提出了一种基于快速离散Curvelet变换的遥感影像融合方法。首先,对经过空间配准的多光谱和全色影像分别进行快速离散Curvelet变换。然后,对低频子带采用局部标准差加权策略,对中高频子带采用绝对值最大策略,对高频子带采用直接替换策略,反变换后即可得到融合影像。IKONOS、QuickBird、World-View-2多光谱和全色影像的融合实验和定量评价结果表明,该方法较传统方法有明显优势。
- 快速离散Curvelet变换 /
- 遥感影像融合 /
- 影像质量评价
Abstract: A new fusion method of remote sensing images based on fast discrete Curvelet transform(FDCT) is proposed.The FDCT is firstly done to the multi-spectrum(MS) and panchromatic(PAN) remote sensing images with space registration.Then fusion of low-frequency sub-band based on standard deviation weighted strategy,median and high frequency sub-band based on maximum replacement strategy,high frequency sub-band based on direct replacement strategy are implied.The fused image is produced by the inverse FDCT.The experimental results with IKONOS,QuickBird,WorldView-2 MS and PAN images indicate that the proposed method significantly outperform the traditional methods.
- fast discrete Curvelet transform /
- RS image fusion /
- image quality evaluation