Processing apparatus, processing method, and non-transitory storage medium

A processing method executed by a computer, the method comprising:

• determining whether a similarity score between a first representative face image in a first face image group and a second representative face image in a second face image group satisfies a first condition;
• determining, for each of the first face image group and the second face image group, whether a second condition defining a relationship between the representative face image and another image in the face image group is satisfied, based on a similarity score between the first representative face image and each of other face images in the first face image group and a similarity score between the second representative face image and each of other face images in the second face image group;
• and
• associating a same person identifier with a plurality of face images included in the first face image group and the second face image group when it is determined that the first condition is satisfied and that the first face image group and the second face image group each satisfy the second condition.

A non-transitory storage medium storing a program that causes a computer to:

• determine whether a similarity score between a first representative face image in a first face image group and a second representative face image in a second face image group satisfies a first condition;
• determine, for each of the first face image group and the second face image group, whether a second condition defining a relationship between the representative face image and another image in the face image group is satisfied, based on a similarity score between the first representative face image and each of other face images in the first face image group and a similarity score between the second representative face image and each of other face images in the second face image group;
• and
• associate a same person identifier with a plurality of face images included in the first face image group and the second face image group when it is determined that the first condition is satisfied and that the first face image group and the second face image group each satisfy the second condition.