Image Registration Based on Wavelet Transform

Image registration is one of the crucial steps in the fusion processing of image. In this paper, mathematics model of image registration is analyzed, and wavelet transform theory is researched. An image registration method based on wavelet is proposed. Decomposed wavelet sub-bands of the original images are obtained using the wavelet transform. Determine the optimal registration parameters of decomposed wavelet sub-bands in the light of the maximum mutual information criterion, and registration is realized using iterative algorithm finally. The results show that the method has some advantages such as higher precision and reliability. And this method outperforms conventional approaches.