Patent ID: 11880987
Assignee: CANON KABUSHIKI KAISHA
Field: Computer technology (Electrical engineering)
Classification: CPC G  A | IPC G

Claim 18:
19. An image processing method of registering a first image and a second image of a subject, the image processing method comprising:
registering, as first registration, a first distance image generated from the first image and having a pixel value based on a distance from an outline of a region indicating a predetermined part of the subject, and a second distance image generated from the second image and having a pixel value based on a distance from an outline of a region indicating the predetermined part of the subject, at a resolution lower than resolutions of the first image and the second image; and
registering, as second registration, the first image and the second image having the resolutions higher than the resolutions of the first distance image and the second distance image, using deformation information acquired through the first registration.