Image registration for multifocus image fusion
Zhong Zhang, Rick S. Blum · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2001
In this paper, some image registration algorithms are investigated for the purpose of image fusion. A hybrid scheme which uses both feature-based and intensity-based methods is proposed. In this scheme, an edge-based image registration approach is developed to guide the intensity- based registration which uses optical flow estimation. The idea of coarse-to-fine multiscale iterative refinement is also studied. Experiments show that this approach is robust and efficient.