Imaging system, imaging method, and non-temporary computer-readable medium storing imaging program

An imaging method comprising:

• controlling, in such a way as to fix a focal position in a predetermined position, an iris imaging unit capturing an image focusing on an iris of a target person;
• authenticating the target person, based on an iris image of the target person being captured by the controlled iris imaging unit;
• controlling the iris imaging unit in such a way as to scan a focal position in a predetermined range, in order to re-authenticate the target person when authentication of the target person fails;
• controlling in such a way as to fix the focal position when the target person is authenticated in a first authentication mode;
• and
• performing control in such a way as to scan the focal position when the target person is authenticated in a second authentication mode, wherein
• the first authentication mode is an authentication mode of authenticating the target person while moving, and
• the second authentication mode is an authentication mode of authenticating the target person while stopping.

A non-transitory computer-readable medium configured to store an imaging program for causing a computer to execute processing of:

• controlling, in such a way as to fix a focal position in a predetermined position, an iris imaging unit capturing an image focusing on an iris of a target person;
• authenticating the target person, based on an iris image of the target person being captured by the controlled iris imaging unit;
• controlling the iris imaging unit in such a way as to scan a focal position in a predetermined range, in order to re-authenticate the target person when authentication of the target person fails;
• controlling in such a way as to fix the focal position when the target person is authenticated in a first authentication mode;
• and
• performing control in such a way as to scan the focal position when the target person is authenticated in a second authentication mode, wherein
• the first authentication mode is an authentication mode of authenticating the target person while moving, and
• the second authentication mode is an authentication mode of authenticating the target person while stopping.