Fingerprint feature extraction device, storage medium storing instructions to perform fingerprint feature extraction method, and method for training neural network to extract feature information of fingerprint

Abstract

There is provided a fingerprint feature extraction device including a fingerprint contact surface. The device comprises a fingerprint input sensor configured to detect a fingerprint of a target in contact with the fingerprint contact surface; a memory configured to store instructions for outputting a fingerprint feature extraction result with respect to the fingerprint input from the fingerprint input sensor using a pre-trained neural network; and a processor configured to execute the instructions, wherein the instructions, when executed by the processor, cause the processor to modify feature information of a fingerprint registered in the fingerprint feature extraction device on the basis of feature information of the input fingerprint of the target, pair the modified feature information of the registered fingerprint with the feature information of the input fingerprint, and input results of pairing to the neural network to output the fingerprint feature extraction result.