Image processing device, authentication system, image processing method, authentication method, and recording medium

An authentication system comprising:

• a capture device configured to capture an iris used for authentication of a person using a first wavelength band and a second wavelength band;
• an authentication device configured to authenticate the person using a determination result of presence or absence of a color contact lens on the iris;
• an information processing device configured to execute processing based on an authentication result of the authentication device;
• and
• an image processing device including
• a memory;
• and
• at least one processor coupled to the memory,
• the at least one processor performing operations to:
• calculate a first feature amount in the first wavelength band using an image in the first wavelength band,
• calculate a second feature amount in the second wavelength band using an image in the second wavelength band, and
• determine presence or absence of the color contact lens on the iris based on the first feature amount and the second feature amount.

An image processing method comprising:

• calculating a first feature amount in a first wavelength band using an image in the first wavelength band in an iris used for authentication of a person;
• calculating a second feature amount in a second wavelength band using an image in the second wavelength band in the iris;
• and
• determining presence or absence of a color contact lens on the iris based on the first feature amount and the second feature amount.

An authentication method comprising:

• by an image processing device included in an authentication system including
• a capture device configured to capture an iris used for authentication of a person using a first wavelength band and a second wavelength band,
• an authentication device configured to authenticate the person using a determination result of presence or absence of a color contact lens on the iris, and
• an information processing device configured to execute processing based on an authentication result of the authentication device,
• calculating a first feature amount in the first wavelength band using an image in the first wavelength band;
• calculating a second feature amount in the second wavelength band using an image in the second wavelength band;
• and
• determining presence or absence of the color contact lens on the iris based on the first feature amount and the second feature amount.

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

• calculating a first feature amount in a first wavelength band using an image in the first wavelength band in an iris used for authentication of a person;
• calculating a second feature amount in a second wavelength band using an image in the second wavelength band in the iris;
• and
• determining presence or absence of a color contact lens on the iris based on the first feature amount and the second feature amount.

A non-transitory computer-readable recording medium recording a program for causing a computer included in an authentication system including

• a capture device configured to capture an iris used for authentication of a person using a first wavelength band and a second wavelength band,
• an authentication device configured to authenticate the person using a determination result of presence or absence of a color contact lens on the iris, and
• an information processing device configured to execute processing based on an authentication result of the authentication device, to execute:
• calculating a first feature amount in the first wavelength band using an image in the first wavelength band;
• calculating a second feature amount in the second wavelength band using an image in the second wavelength band;
• and
• determining presence or absence of the color contact lens on the iris based on the first feature amount and the second feature amount.