Matching apparatus, matching method, and matching program

A matching method comprising:

• extracting at least one reference part that is common in a first image and a second image, from each of the first image and the second image, the first image and the second image being images of a photographic subject at different imaging times;
• deriving first position information indicating a relative position of at least one abnormal part specified in the first image, relative to the at least one reference part in the first image;
• deriving second position information indicating a relative position of at least one abnormal part specified in the second image, relative to the at least one reference part in the second image;
• deriving, on the basis of the first position information and the second position information, as a difference, a distance between the abnormal part included in the first image and the abnormal part included in the second image;
• and
• associating, on the basis of the difference between the first position information and the second position information, the abnormal part included in the first image and the abnormal part included in the second image with each other.

A non-transitory computer readable recording medium storing a matching program causing a computer to execute:

• extracting at least one reference part that is common in a first image and a second image, from each of the first image and the second image, the first image and the second image being images of a photographic subject at different imaging times;
• deriving first position information indicating a relative position of at least one abnormal part specified in the first image, relative to the at least one reference part in the first image;
• deriving second position information indicating a relative position of at least one abnormal part specified in the second image, relative to the at least one reference part in the second image;
• deriving, on the basis of the first position information and the second position information, as a difference, a distance between the abnormal part included in the first image and the abnormal part included in the second image;
• and
• associating, on the basis of a difference between the first position information and the second position information, the abnormal part included in the first image and the abnormal part included in the second image with each other.