Information processing apparatus, information processing method, and program

An information processing method executed by an information processing apparatus, the method comprising:

• collating first feature information extracted from a person included in a first image with first registered feature information stored in a storage unit;
• in a case where the first feature information is unable to be extracted from the person or a collation result indicates a mismatch, storing second feature information extracted from the person in the storage unit as second registered feature information;
• and
• collating second feature information extracted from a person included in a second image with the second registered feature information stored in the storage unit, and thus specifying the person corresponding to the second registered feature information in the second image.

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

• a procedure of collating first feature information extracted from a person included in a first image with first registered feature information stored in a storage unit;
• a procedure of storing, in a case where the first feature information is unable to be extracted from the person or a collation result in the collation procedure indicates a mismatch, second feature information extracted from the person in the storage unit as second registered feature information;
• and
• a procedure of collating second feature information extracted from a person included in a second image with the second registered feature information stored in the storage unit, and thus specifying the person corresponding to the second registered feature information in the second image.