BYD's new patent: can detect peeled fingerprints to prevent unidentifiable after input

Thanks to CTOnews.com netizen Xiao Zhan for the clue delivery! CTOnews.com February 3 news, recently, BYD Semiconductor Co., Ltd. publicly patented "detection of fingerprint peeling method and device, fingerprint input method and device and chip."

It is shown that by obtaining the target fingerprint image, the invention determines the ridge distance variance according to the target fingerprint image, and judges whether the user fingerprint corresponding to the target fingerprint image is a peeling fingerprint according to the ridge distance variance, so as to realize the detection of the user fingerprint, which can not only improve the accuracy of fingerprint recognition, but also effectively avoid being unable to identify the peeled fingerprint at present. A problem that leads to the entry of peeled fingerprints, which leads to subsequent unidentifiable problems.

CTOnews.com learned that current fingerprint recognition devices can not identify abnormal fingerprints other than dehumidified fingerprints, such as those caused by finger peeling. Finger peeling will cause drastic changes in fingerprints, resulting in peeling fingerprints can not be effectively identified after being entered for a period of time.

In other words, BYD's patent can detect whether the user's fingerprint is peeled or not, and if it detects a peeled fingerprint, it will prevent the user from entering it and prevent it from being identified later.