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Living body recognition method, storage medium, and computer device

專利號(hào)
US11176393B2
公開(kāi)日期
2021-11-16
申請(qǐng)人
TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED(CN Shenzhen)
發(fā)明人
Shuang Wu; Shouhong Ding; Yicong Liang; Yao Liu; Jilin Li
IPC分類
G06K9/62; G06K9/00; G06T7/194
技術(shù)領(lǐng)域
facial,image,liveness,confidence,model,training,live,target,feature,face
地域: Shenzhen

摘要

A face liveness recognition method includes: obtaining a target image containing a facial image; extracting facial feature data of the facial image in the target image; performing face liveness recognition according to the facial feature data to obtain a first confidence level using a first recognition model, the first confidence level denoting a first probability of recognizing a live face; extracting background feature data from an extended facial image, the extended facial image being obtained by extending a region that covers the facial image; performing face liveness recognition according to the background feature data to obtain a second confidence level using a second recognition model, the second confidence level denoting a second probability of recognizing a live face; and according to the first confidence level and the second confidence level, obtaining a recognition result indicating that the target image is a live facial image.

說(shuō)明書

Specifically, both the first confidence level and the second confidence level are confidence levels of the target image being a live facial image, and are confidence levels obtained through analysis based on different image features. Therefore, the server may integrate the two confidence levels to obtain a final confidence level, and obtain, according to the final confidence level, a recognition result indicating whether the target image is a live facial image. That is, the server may perform a score fusion to fuse the two scores or confidence levels so as to obtain a final score or confidence level.

Further, in an authentication scene, after obtaining a recognition result indicating whether the target image is a live facial image, the server can obtain, according to this recognition result and the facial recognition result, an authentication result indicating whether the authentication succeeds, and perform operations corresponding to the authentication result. This can ensure that the operations are performed by the user himself/herself. For example, in a process of opening a bank account in a bank application, if it is determined that the target image is a live facial image and the facial recognition indicates matching, the authentication succeeds and subsequent account opening operations go on. For another example, in an access control scene, if it is determined that the target image is a live facial image and the facial recognition indicates matching, the authentication succeeds and a door opening instruction is output.

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