Patent ID: 11967173
Assignee: T STAMP INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. A method for biometric verification, comprising:
receiving an image of a subject, wherein the image comprises a face;
determining a mask probability based on the image;
generating a first FXR based on the image;
retrieving a second FXR and a third FXR;
generating:
a first similarity score by comparing the first FXR and the second FXR; and
a second similarity score by comparing the first FXR and the third FXR;

calibrating the first similarity score and the second similarity score based on the mask probability to generate a third similarity score, wherein calibrating the first similarity score and the second similarity score comprises computing a log-likelihood ratio, and wherein the third similarity score comprises the log-likelihood ratio;
determining that the third similarity score satisfies a predetermined threshold; and
verifying that the second subject and the subject are the same based on the determination.