In order to solve the problems that the image fusion method based on IHS transform can not preserve good spectral information and the image fusion method based on separable discrete wavelet transform is low in spatial resolution and block effect is exist in the fused image

a new multispectral image fusion method based on IHS transform and three channels nonseparable symmetrical wavelets is proposed.A construction method of the symmetrical filter bank relating to this kind of wavelet is presented.The multi-resolution decompositions of the intensity of the multispectral image and panchromatic image are performed in nonsubsampled mode using the filter bank constructed.The approximation images and the detail images of the multi-resolution pyramids are fused.The experiment results show that this method has good visual effect.The fusion performance outperforms the IHS fusion method

the fusion method based on DWT and the fusion method based on IHS-DWT in preserving spectral quality and high spatial resolution information.