Image Fusion Scheme Based on Nonsubsampled Contourlet and Block-Based Cosine Transform

作     者：宋好好 陆臻 

作者机构：Quality Supervision and Testing Center of Security Products for Computer Information SystemMinistry of Public Security 

出 版 物：《Journal of Shanghai Jiaotong university(Science)》 (上海交通大学学报（英文版）)

年 卷 期：2012年第17卷第1期

页      面：8-12页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

主　　题：image fusion nonsubsampled contourlet cosine wavelet satellite image 

摘      要：A kind of nonsubsampled contourlet and block-based cosine transform(NSCBCT)is developed,and its application in image fusion is studied in this *** construction of filtering banks is based on the nonsubsampled contourlet transform(NSCT)and block-based discrete cosine transform(B-DCT).We combine NSCT and B-DCT to design filters that lead to NSCBCT with better singularity representation than either of them in isolation.A design framework based on the hybrid approach is proposed,which allows for the fast implementation based on NSCT and B-DCT *** addition,a new image fusion scheme based on NSCBCT for multispectral and panchromatic satellite images is ***,because it adopts NSCT,the fused satellite images have higher spatial resolution than those based on ***,based on the localized high frequency information provided by B-DCT,the proposed fusion scheme can reduce the spectral distortion of the fused image *** results show that the proposed fusion method is able to increase the spatial resolution and reduce the spectral distortion of the fused image at the same time.