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Fingerprint identification method and device

A fingerprint recognition and fingerprint technology, which is applied in character and pattern recognition, instruments, calculations, etc., can solve the problem that fingerprint collection cannot be triggered, and achieve the effect of optimizing the fingerprint recognition process and improving flexibility

Active Publication Date: 2020-02-07
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In related technologies, when users use the fingerprint function under the screen, they need to press the screen continuously. If they let go, the fingerprint collection may not be triggered.

Method used

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

Examples

Experimental program
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Embodiment Construction

[0051] 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.

[0052] figure 2 It is a flow chart of a fingerprint identification method shown according to an exemplary embodiment. This method can be applied to terminal devices such as mobile phones, tablet computers, or smart watches, and is not limited here. The fingerprint recognition in this method may be an off-screen fingerprint recognition. Such as figure 2 As shown, the method includes...

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Abstract

The invention relates to a fingerprint identification method and device. The method comprises: when it is detected that a screen is touched by a finger, acquiring position information of a touch point; if it is determined that the touch point is located in the fingerprint collection area of the screen, obtaining a touch pressure value; if the touch pressure value is larger than the pressure threshold value and the screen brightness does not meet the brightness condition, adjusting the screen brightness to meet the brightness condition, stopping obtaining the touch pressure value after the screen brightness is adjusted, and obtaining the fingerprint image through the fingerprint sensor; and matching the fingerprint image with a fingerprint database to obtain a matching result, and returningthe matching result to the application calling the fingerprint function. According to the invention, after the user presses the fingerprint acquisition area in the screen forcibly to trigger fingerprint acquisition, in the fingerprint acquisition process, the user does not need to press the fingerprint acquisition area forcibly and continuously, and fingerprint acquisition and identification canbe carried out only by keeping the finger in the fingerprint acquisition area, so that the fingerprint identification process is optimized.

Description

technical field [0001] The present disclosure relates to the technical field of fingerprints, in particular to a fingerprint identification method and device. Background technique [0002] Total reflection refers to the phenomenon that light is reflected back into the original medium when it is incident on the interface of an optically denser medium to an optically rarer medium. Among them, comparing the two media, the medium in which the speed of light is relatively small is called an optically dense medium, and the medium in which the speed of light is relatively high is called an optically sparse medium. Two conditions must be met for total reflection to occur, one is that the incident angle is greater than the critical angle, and the other is that light enters an optically sparse medium from an optically denser medium. [0003] Diffuse reflection refers to the phenomenon that light projected on a rough surface is reflected in all directions. When a parallel incident li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/13Y02D30/70
Inventor 黄学斌
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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