Information processing system, information processing apparatus, information processing method, and recording medium

An information processing method executed by at least one computer, the information processing method comprising:

• storing first area information indicating a clear zone in which a feature quantity of a ridge in a ridge image can be extracted, and second area information indicating an unclear zone that is an area other than the clear zone, in association with each of a plurality of ridge images;
• extracting third area information indicating the clear zone, and fourth area information indicating the unclear zone, from the ridge image;
• calculating a first score based on the first area information and the second area information, and a second score based on the third area information and the fourth area information;
• and
• selecting the ridge image to be used for machine learning of the extraction unit, on the basis of the first score and the second score.

A non-transitory recording medium on which a computer program that allows at least one computer to execute an information processing method is recorded, the information processing method including:

• storing first area information indicating a clear zone in which a feature quantity of a ridge in a ridge image can be extracted, and second area information indicating an unclear zone that is an area other than the clear zone, in association with each of a plurality of ridge images;
• extracting third area information indicating the clear zone, and fourth area information indicating the unclear zone, from the ridge image;
• calculating a first score based on the first area information and the second area information, and a second score based on the third area information and the fourth area information;
• and
• selecting the ridge image to be used for machine learning of the extraction unit, on the basis of the first score and the second score.