Multi-source Remote Sensing Image Fusion Based on Nonsubsampled Contourlet Transform
The goal of multi-source remote sensing image fusion is to obtain a high-resolution multispectral image which combines the spectral characteristic 0f the low-resolution data with the spatial resolution of the panchromatic image.In this paper.methods using notlsubsampled contourlet transforni(NSCT)for fusing multispectral low-resolution images with a more highiY resolved panchromatic image are described.AlJ the jnput images are decomposed firstly with NSCT.Then the decomposition coefficients on the difierent scale are combined using substitution or comparison rule.and the fused image is obtained bv takinR the corresponding inverse NSCT of the fused coemcients.The spatial and spectral effects are evaluated by qualitative and quantitative measures and the results are compared with those of existing discrete wavelet transfornl(DWT).The results show that the new method can keep better spatiaI resolution of the panchromatic images,and better spectral effect of the multispectral images.And the results give some guidance on how to control over how much spatial detail or spectral information should be retained.
Image Fusion Muitiresolution transformation Multiseusor fusion Nonsubsampled contourlet transform Remotesensing
Xiujuan Li Shutao Li
国际会议
The International Conference Information Computing and Automation(2007国际信息计算与自动化会议)
成都
英文
830-833
2007-12-19（万方平台首次上网日期，不代表论文的发表时间）