Review of image fusion algorithm based on multiscale decomposition

Image fusion algorithm is of importance in image processing. Image fusion algorithm based on multi-scale decomposition was reviewed in this paper. Multi-scale decomposition algorithm mainly includes wavelet transform and pyramid transform. The two fusion algorithm were respectively applied in multi-focus images, multi-modality images and color images with different exposure, advantage and disadvantage were summarized and application was given. Fusion results were given by MATLAB simulation. Image fusion algorithm should be selected according to the information extracted and the aim of fusion.