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

Claim 0:
1. An image processing apparatus comprising:
a memory storing a program; and
one or more processors which, by executing the program, function as:
an acquisition unit configured to acquire a first image and a second image of a subject that are captured at different times;
a generation unit configured to generate a first distance image having a pixel value based on a distance from an outline of a region that indicates a predetermined part of the subject and is extracted from the first image, and having a resolution lower than a resolution of the first image, and generate a second distance image having a pixel value based on a distance from an outline of a region that indicates the predetermined part and is extracted from the second image, and having a resolution lower than a resolution of the second image;
a first calculation unit configured to calculate first deformation information through first registration processing of registering the first distance image and the second distance image; and
a second calculation unit configured to calculate second deformation information through second registration processing of registering the first image and the second image based on the first deformation information.