一种基于NSCT的区域能量图像融合算法

针对NSCT具有方向性、各向异性和平移不变性的特点,提出了一种新的基于NSCT图像融合算法。该方法同时考虑了窗口区域的匹配度和窗口中心像素的正负号相位信息,将选择和加权平均二种融合规则相结合,取最高层绝对值较大的系数作为融合图像最高层的系数。实验结果表明,文中方法融合效果优于传统小波和轮廓波变换方法。

An Image Fusion Algorithm based on Local Energy Using NSCT

For the nonsubsampled contourlet transform(NSCT) has features of multidirection,flexible multiscale and shift-invariance.A novel image fusion algorithm based on NSCT is proposed.In this proposed algorithm,both the matching of window region and the polarity of window center pixel are considered,the two fusion rules of selection and weighted average are combined,together,the maximum rule of absolute value is used to select the highest frequency NSCT coefficient of the fusion images.Experimental results indica...