Fingerprint identification method and fingerprint identification device

A technology for fingerprint identification and user fingerprints, which is applied to measurement devices, character and pattern recognition, acquisition/organization of fingerprints/palmprints, etc. It can solve problems such as hidden dangers of mobile terminal security, improve the false recognition rate, avoid hidden dangers, reduce The effect of false confession rate

Active Publication Date: 2017-07-07
XIAOMI INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the learning function will add the pixel features of the damaged pixel units in the fingerprint recognition sensor to the fingerprint template, thereby improving

Method used

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  • Fingerprint identification method and fingerprint identification device
  • Fingerprint identification method and fingerprint identification device
  • Fingerprint identification method and fingerprint identification device

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Embodiment Construction

[0066] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0067] figure 1 It is a hardware structural diagram of a mobile terminal shown according to an exemplary embodiment. like figure 1 As shown, the mobile terminal may be a terminal such as a smart phone, a tablet computer, or an e-book reader. The mobile terminal includes a processor 120 , a memory 140 connected to the processor 120 and a fingerprint identification module 160 respecti...

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Abstract

The invention discloses a fingerprint identification method and a fingerprint identification device, belonging to the field of fingerprint identification. The fingerprint identification method comprises steps: whether the number of damaged pixel units in a fingerprint identification sensor reaches a predetermined threshold is detected, wherein the damaged pixel units are physically-damaged pixel units in the fingerprint identification sensor; and if the number of the damaged pixel units reaches the predetermined threshold, matching and identification on a fingerprint image acquired by the fingerprint identification sensor are abandoned. The problem that a learning function adds pixel features of the damaged pixel units in the fingerprint identification sensor to a fingerprint template, the false accept rate of the fingerprint identification sensor is thus improved, and hidden safety dangers are caused to exist in a mobile terminal is solved. The effects that after the number of damaged pixel units reaches the predetermined threshold, matching and identification on the fingerprint image are abandoned, the false accept rate of the fingerprint identification sensor is reduced, and hidden safety dangers brought by the over high false accept rate of the mobile terminal are achieved.

Description

technical field [0001] The present disclosure relates to the field of fingerprint identification, in particular to a fingerprint identification method and device. Background technique [0002] Fingerprint identification technology has been widely used on mobile terminals such as smart phones and tablet computers. An array of M*N pixel units is arranged on the fingerprint recognition sensor. Fingerprint recognition technology collects the user's fingerprint image through each pixel unit in the fingerprint recognition sensor, and matches the collected fingerprint image with the pre-stored fingerprint template to realize functions such as screen unlocking and mobile payment. [0003] Since the user's fingerprint will change with age and season, therefore, in the related art, a learning function is added to the fingerprint template, thereby reducing the false rejection rate (False Reject Rate, FRR) of the fingerprint recognition sensor. Fingerprint images are recognized as dif...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06F11/22
CPCG06F11/2221G06F11/2289G06V40/13G06V40/1306G06V40/1365G01R31/2829G01R31/44
Inventor 孙长宇李志杰孙伟
Owner XIAOMI INC
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