Image fusion based on improved fusion rules of wavelet transform

Using the wavelet transform and the fusion rule based on windows for choosing the largest coefficient absolute sum,the multi-focus images will be susceptible to noise and have incomplete fusion information.This paper presents a kind of fusion rule which will select the coefficients of two images for the fusion to make the fusion images contain the information of original images as much as possible.Comparison of fusion results of multi-focus image is given.The proposed fusion rules can achieve better fusion performance than other usual fusion rules,avoiding losing information.