关键词: 弹性图像配准, 多模态图像, 局部仿射模型

Abstract: To improve the poor availability of elastic model in multimodality image registration，an image model translation method is presented.The mean value of a group of pixels which corresponds to the same pixel value in another image is calculated.Corresponding pixel value in the original image is replaced by the mean value.The gray of two images are converted into the same modal.This paper conducts image registration between the converted grayscale image and the target image，and realizes multimodality image registration by mapping the deformation parameter to the floating image.The experimental results show that the method can successfully use the local affine model for multimodal image registration.

Key words: elastic image registration, multimodality image, local affine model