Verification system, verification method, and verification program of id card

A verification method of an ID card using an issuing apparatus of an ID card and a verification apparatus of the ID card, the verification method comprising:

• causing the issuing apparatus of the ID card to execute
• a first face image acquisition step of acquiring a first face image obtained by imaging a face of a person,
• an output step of outputting a verification image including the first face image and verification information for verifying validity to a printer that issues the ID card by printing the verification image on a card-shaped recording medium, and
• a storage step of storing, in a memory, a first captured image obtained by capturing the verification image printed on the ID card via a camera;
• and
• causing the verification apparatus of the ID card to execute
• a second captured image acquisition step of acquiring, as a second captured image, an image obtained by capturing a verification image printed on an ID card to be verified via a camera, and
• a verification step of verifying authenticity of the ID card to be verified by taking into consideration a change in time of a color optical density of the verification image printed on the ID card and comparing density characteristics of each of the first captured image acquired from the memory and the second captured image acquired from the camera.

A non-transitory computer-readable storage medium storing a verification program of an ID card for operating a verification system of an ID card including a first computer that issues an ID card, and a second computer that verifies the ID card, the verification program causing

• the first computer to execute
• a first face image acquisition step of acquiring a first face image obtained by imaging a face of a person;
• an output step of outputting a verification image including the first face image and verification information for verifying validity to a printer that issues the ID card by printing the verification image on a card-shaped recording medium;
• and
• a storage step of storing, in a memory, a first captured image obtained by capturing the verification image printed on the ID card via a camera,
• the second computer to execute
• a second captured image acquisition step of acquiring, as a second captured image, an image obtained by capturing a verification image printed on an ID card to be verified via a camera;
• and
• a verification step of verifying authenticity of the ID card to be verified by taking into consideration a change in time of a color optical density of the verification image printed on the ID card and comparing density characteristics of each of the first captured image acquired from the memory and the second captured image acquired from the camera.