The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2026
Filed:
Oct. 13, 2022
China Unionpay Co., Ltd., Shanghai, CN;
Qi Wang, Shanghai, CN;
Yongkai Zhou, Shanghai, CN;
CHINA UNIONPAY CO., LTD., Shanghai, CN;
Abstract
A biometric feature extraction method for a secure multi-party computation system. The method comprises: acquiring preprocessed fragments of a biometric feature; and performing feature extraction on the preprocessed fragments using a neural network, wherein in the first N convolutional and pooling layers, performing data computation on the preprocessed fragments by means of secure multi-party computation respectively to obtain intermediate data; and in the convolutional and pooling layers subsequent to the Nth layer, aggregating the intermediate data to a single-party server platform for subsequent computation, and inputting the same to a fully connected layer for completing feature extraction. There also relates to a biometric feature extraction device for a secure multi-party computation system, a computer storage medium and a computer program product.