New Elastic Registration Algorithm Of Medical Images

Image registration is the process of overlaying two or more images of the same scene taken at different times, from different viewpoints, and/or by different sensors. Its task is to find a correspondence function mapping coordinates from a reference image to coordinates of homologous points in a test image. Image registration is a crucial step in all image analysis tasks in which the final information is gained from the combination of various data sources like in image fusion, change detection, and multichannel image restoration. Image registration is mainly applied in the areas of video compression and coding, motion analysis, objection tracking etc. It leads to algorithm for segmentation, general 3-D reconstruction, registration with annotated atlases, motion detection and compensation.We mainly focus our research on three image registration topics, which we would introduce in the following.1 A new hybridized rigid-elastic multiresolution algorithm for medical image registrationIn fact, various deformations exist simultaneously in medical image, which means there are global rigid deformation and local elastic deformation simultaneously in the same image, so a more suitable registration method is aligning medical images by the methods of rigid registration and elastic registration in turn. Pure elastic algorithm isn't suitable for this kind of deformation. If aligning medical images directly through elastic registration, misregistration arises frequently for the use of merely local information of the medical images. On the other side, rigid deformation need less cost of evaluation, so from the point of view of calculating time, it will be a reasonable method that rigid and elastic registration is applied successively. Similar work has been done by Rueckert D et al, who divide the process of registration into...