Fingerprint recognition method and fingerprint recognition device

A fingerprint recognition method comprising:

• receiving an input fingerprint image;
• dividing the input fingerprint image into M image blocks, wherein M is an integer greater than 1;
• calculating a score of N image blocks among the M image blocks by inputting successive ones of the M image blocks into a neural network for fingerprint recognition until the score of the N image blocks meets a preset condition, wherein the score is a sum score, and Nis an integer less than or equal to M;
• and
• terminating calculating the scores of remaining image blocks among the M image blocks, and recognizing a legitimacy of a fingerprint in the input fingerprint image.

A fingerprint recognition device comprising:

• a receiving module configured to receive an input fingerprint image;
• an obtaining module configured to obtain M image blocks by dividing the input fingerprint image, wherein M is an integer greater than 1;
• and
• a recognition module configured to calculate a score of N image blocks among the M image blocks by inputting successive ones of the M image blocks into a neural network for fingerprint recognition until the score of the N image blocks meets a preset condition, wherein the score is a sum score, and Nis an integer less than or equal to M, terminate calculating the scores of remaining image blocks among the M image blocks, and recognize a legitimacy of a fingerprint in the input fingerprint image, wherein N is an integer less than or equal to M.