Alipay (hangzhou) Information Technology Co., Ltd.

Alibaba Group Holding Limited

Alipay Information Technology Co., Ltd.

Kai Zhu

Jianxu Zheng

Yi Zhang

Wanxi Ren

Yong Jiang

Xing Yang

Huawei Long

Methods, systems, and apparatus for operations for processing fingerprint images. An example system includes obtaining an original fingerprint trace image of a fingerprint trace left by a user on a target object; inputting the original fingerprint trace image to a pre-trained fingerprint image processing model that is configured to process the original fingerprint trace image in accordance with pre-trained parameters of the pre-trained fingerprint image processing model; obtaining as output a target fingerprint trace image from the fingerprint image processing model; and using the target fingerprint trace image as a test fingerprint image for performing a test on a fingerprint recognition device, wherein a degree of matching between a fingerprint in the target fingerprint trace image and a real fingerprint that corresponds to a same finger is greater than or equal to a predetermined threshold.

Fingerprint image processing methods and apparatuses

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for testing performance of a biometric characteristic recognition device. One of the methods includes obtaining a target simulated component for testing performance of the biometric characteristic recognition device from a plurality of simulated components. A mechanical arm is controlled, based on a camera component arranged on the mechanical arm, to input biometric characteristic information of the target simulated component to the biometric characteristic recognition device. A recognition result is obtained from the biometric characteristic recognition device and a performance test result of the biometric characteristic recognition device is determined based on the recognition result.

Methods, apparatuses, devices, and systems for testing biometric recognition device

Systems and methods are provided for determining identifier information associated with media content stored in a storage device; wherein the storage device comprises a plurality of clusters and stores a media file including media content and identifier information associated with the media content, the media content and the identifier information being stored in a plurality of data units distributed among the plurality of clusters. The method comprises: determining, when a data unit is read, a first identifier associated with a first target cluster that stores the data unit being read; determining a second identifier associated with the first identifier, the second identifier being associated with a second target cluster that stores a data unit that stores the identifier information; and obtaining, based on the second identifier, the identifier information associated with the media content.

Method and apparatus for determining media information associated with data stored in storage device

Growing community of inventors

Hangzhou, China

Kai Zhu