Fingerprint recognition device and method, and method for training artificial neural network for fingerprint image restoration in the fingerprint recognition device

A method for training an artificial neural network for fingerprint image restoration in a fingerprint recognition device, the method comprising:

• acquiring an original fingerprint image;
• generating training data including a degraded fingerprint image obtained through degrading the original fingerprint image;
• and
• training the artificial neural network to generate a restored fingerprint image from the training data, the restored fingerprint image having a resolution substantially identical to that of the original fingerprint image and minutiae substantially identical to minutiae in the original fingerprint image.

A non-transitory computer-readable storage medium storing a computer program including instructions for causing a processor to perform a fingerprint recognition method, the fingerprint recognition method comprising:

• acquiring an original fingerprint image;
• and
• generating a restored fingerprint image using a pre-trained artificial neural network, the restored fingerprint image having a resolution substantially identical to that of the original fingerprint image and minutiae substantially identical to minutiae in the original fingerprint image,
• wherein the restored fingerprint image reflects minutiae in a degraded fingerprint image obtained through degrading the original fingerprint image and the minutiae in the restored fingerprint image.