Fusion of Multi-spectral Image Using Non-separable Additive Wavelets for High Spatial Resolution Enhancement

Construction method of three‐channel non‐separable symmetric wavelets with arbitrary dilation matrices and its applications in multispectral image fusion

“…3 g and 4 g present the fused images obtained using the proposed fusion method (IHS and three‐channel non‐subsampled non‐separable wavelet transform, IHS‐TCNNWT). To observe the fusion effects clearly, we compared our proposed method with the fusion methods based on IHS transform [3], DWT [5], IHS–DWT [9], IHS–curvelet [16], IHS and non‐subsampled contourlet transform (IHS‐NSCT) [17], and IHS–NAWS [18]. The fusion rules of the latter three methods are as the same as that of the proposed fusion method.…”