A multiresolution image fusion algorithm based on watershed segmentation and wavelet transform is proposed.First,obtain the wavelet pyramid using the orthogonal wavelet transform.Then,watershed segmentation of the approximation image is computed,and the inverse wavelet transform is used to project this original segmentation up to the higher resolutions.After joint region analyzing, the joint region segmentation map is gained,which is further used to guide the fusion of the wavelet coefficients.Finally,imple...