Patent ID: 11880988
Assignee: GE PRECISION HEALTHCARE LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. An image registration method, comprising:
obtaining a reference image and a floating image to be registered;
performing image preprocessing on the reference image and the floating image, wherein the image preprocessing comprises rigid registration based on an iterative closest point registration and a mutual information registration, wherein the rigid registration comprises:
performing a coarse registration about at least one contour point data set on the reference image and the floating image by using the iterative closest point registration, so as to obtain a first set of transformation parameters;
optimizing the coarse registration between the reference image and the floating image by using a mutual information registration based on the first set of transformation parameters, so as to obtain a second set of transformation parameters; and
registering the reference image and the floating image based on the second set of transformation parameters, wherein a contour point data set of each of the reference image and the floating image is extracted through a marching cubes algorithm;

performing a non-rigid registration on the preprocessed reference image and the preprocessed floating image to obtain a registration result image; and
outputting the registration result image.