关键词: 图像配准, Curvelet变换, 图像融合, 多聚焦图像

Abstract: After using the motion estimation based on optical flow to make the core image registration，and because of the fuzzy part of rugged core image，a new multi-focus image fusion method based on Curvelet transform is proposed.First，two different focus images are decomposed using Curvelet transform separately，then the new Curvelet coefficients are acquired by adopting a simple fusion rule，i.e.low-frequency coefficients uses the weighted average and high-frequency coefficients uses the largest absolute value.Finally，the fused image is obtained by performing an inverse Curvelet transform.Thus the experiment demonstrates that the fusion method based on Curvelet transform can effectively integrate the multi-focus images.Compared with wavelet transform method，the proposed method can get better fusion effect.

Key words: image registration, Curvelet transform, image fusion, multi-focus image