Patent ID: 11886490
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. A method of operating a neural network, the method comprising:
receiving a plurality of biometric images that include at least one labeled image and at least one unlabeled image;
extracting feature vectors that correspond to the plurality of biometric images;
training a plurality of codebooks by using the feature vectors;
receiving a query image and calculating distance values between the query image and the plurality of biometric images;
estimating, based on the calculated distance values, expected values for classes that classify the plurality of biometric images;
passing a biometric authentication when a greatest value of the expected values exceeds a preset threshold value, and
retraining the plurality of codebooks by using the query image, in response to passing the biometric authentication.