Patent ID: 11893829
Assignee: CHINA UNIONPAY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 16:
17. A business device, comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the computer program, when executed by the processor, causes the processor to perform operations, comprising:
obtaining historical business information of users corresponding to face samples in a password face sample library under a condition that a number of face samples in the password face sample library is greater than or equal to a preset sample number threshold, wherein confidential business passwords of the users corresponding to the face samples in the same password face sample library are the same;
dividing the password face sample library to obtain M levels of face sample sub-libraries according to the historical business information, where M is a positive integer;
performing face recognition processing based on the obtained M levels of face sample sub-libraries,
wherein the dividing the password face sample library to obtain M levels of face sample sub-libraries according to the historical business information comprises:
dividing at least one password face sample library to obtain at least one level-1 face sample sub-library according to an attribute of a type of historical business information;
for each level-1 face sample sub-library, obtaining a number of face samples in the level-1 face sample sub-library, and under a condition that the number of face samples in the level-1 face sample sub-library is greater than or equal to the preset sample number threshold, dividing the level-1 face sample sub-library to obtain at least one level-2 face sample sub-library according to an attribute of another type of historical business information;
for each level-2 face sample sub-library, obtaining a number of face samples in the level-2 face sample sub-library, until a number of face samples in level-M face sample sub-library obtained by division according to an attribute of a certain type of historical business information is less than the preset sample number threshold.