Using OPTFR-multiwavelet to improve the fusion of infrared and visible images

An image fusion method based on OPTFR (optimum time-frequency resolution)- multiwavelets transform is presented. Firstly, multiscale decomposition of the source images is carried out with OPTFR-multiwavelets transform. The low- frequency components are fused with weighted average of energy, and the high frequency components are fused with weighted average of variance and operators proposed. Then the fused coefficients are reconstructed to obtain the fusion image. The experimental results show that the fused image obtained by the fusion scheme can hold spectrum information of the visible image as well as inherit object information of the infrared image, which is better than that of using the Laplacian pyramid transform, the orthogonal multiwavelets transform and the Contourlet transform.