| 摘要 |
A biometric authentication device includes: a biometric information acquisition unit which acquires biometric information of a user and generates a first input biometric image representing the biometric information, a storage unit which stores data relating to registered biometric information of at least one registered user registered in advance, and a processing unit. The processing unit realizes a quality judgment function which judges if the first input biometric image is suitable or not for use for comparison of the biometric information represented in the first input biometric image with the registered biometric information, a selection function which selects registered biometric information which is similar to biometric information represented in the first input biometric image among registered biometric information when the first input biometric image is judged unsuitable, and a matching process function which compares the biometric information represented in a second input biometric image which is generated by reacquisition of the biometric information of the user by the biometric information acquisition unit with the selected registered biometric information. |
