小波变换上升方案及其在图像融合中的应用

介绍了小波变换的上升方案,使用上升方案实现了CDF(Cohen-Daubech ies-Feauwell)(2,2)双正交小波。与传统小波变换相比,基于上升方案的小波变换具有构造简单、运算方便的特点,而且可以根据实际需要构造新的小波。在传统小波图像融合算法的基础上,提出了更为通用的小波变换融合方法,在基于子带的融合过程中体现了高频信息的竞争以及低频信息的协同。这既考虑了如何克服因为待融合影像不同的成像方式带来的块效应,又能方便地根据用户需要改善影像融合质量。

Lifting Scheme of Wavelet Transform and Application in Image Fusion

The lifting scheme of wavelet is introduced in this thesis and Cohen-Daubechies-Feauwell(2,2)biorthogonal wavelet constructed by lifting scheme is made to be used in image fusion.It can be proved that wavelet transform constructed by lifting scheme has advantages such as constructed simply and calculated conveniently and it can be made good use in image fusion.In this paper,an improved image fusion method is introduced.This method indicates the full use of two images low frequencies information,but in fact,it indicates the correct use of mechanisms of defferent remote sensing sensors.