Fusion of Remote Sensing Images Based on Fast Discrete Curvelet Transform

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.