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Fingerprint identification method and device

A fingerprint identification and fingerprint image technology, which is applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of lower fingerprint image recognition rate, lower user experience, troublesome user authentication, etc., so as to improve the recognition rate and improve The effect of user experience

Active Publication Date: 2016-01-06
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are usually some noise points in the fingerprint image data collected in the prior art, the existence of these noise points reduces the recognition rate of the fingerprint image, causes troubles for user authentication, and reduces the user experience

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] figure 1 This is a flowchart of a method for fingerprint identification provided in Embodiment 1 of the present invention. The method can be performed by a device for fingerprint recognition, wherein the device can be implemented by software and / or hardware, and is generally integrated in a fingerprint recognition sensor, which can be integrated in a mobile terminal, which can include a smartphone, Tablets and other devices.

[0021] see figure 1 , the method specifically includes the following operations:

[0022] S101. Continuously collect at least two fingerprint images of a target finger, and acquire at least two initial fingerprint image data of the target finger.

[0023] In the process of collecting the fingerprint image of the finger, a large number of collecting circuits in the fingerprint sensor collect the fingerprint image of the finger at the corresponding position. Due to the accuracy of the acquisition circuit and the relativity of the finger position...

Embodiment 2

[0037] figure 2 This is a flowchart of a fingerprint identification method provided in Embodiment 2 of the present invention. The fingerprint identification method provided in Embodiment 2 of the present invention is based on the technical solutions of the foregoing embodiments.

[0038] see figure 2 , the method includes the following operations:

[0039]S201. Continuously collect at least two fingerprint images of a target finger, and acquire at least two initial fingerprint image data of the target finger.

[0040] S202: Calculate the average value of the pixel values ​​of the corresponding pixel points of each piece of the initial fingerprint image data, and map the average value to the corresponding pixel points to form target fingerprint image data.

[0041] S203 , extracting the feature points to be checked of the fingerprint of the target finger in the target fingerprint image data.

[0042] Fingerprints are lines formed by the protrusions or depressions of the hu...

Embodiment 3

[0073] image 3 This is a schematic structural diagram of a fingerprint identification device provided in Embodiment 3 of the present invention. The embodiments of the device for fingerprint identification are implemented based on the embodiments of the above-mentioned methods for fingerprint identification. For the incomplete description in the embodiments of the device for fingerprint identification, reference may be made to the embodiments of the above-mentioned methods for fingerprint identification.

[0074] see image 3 , the device includes the following modules: a collection module 31, a calculation module 32 and an identification module 33;

[0075] Wherein, the collection module 31 is configured to continuously collect fingerprint images of the target finger at least twice, and obtain at least two initial fingerprint image data of the target finger;

[0076] The calculation module 32 is used to calculate the average value of the pixel values ​​of the corresponding pi...

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Abstract

The embodiment of the invention discloses a fingerprint identification method and device. The method comprises the following steps: continuously carrying out a fingerprint image collection on a target finger at least twice, and obtaining at least two copies of initial fingerprint image data of the target finger; and calculating the mean value of pixel values of corresponding pixel points in each copy of initial fingerprint image data, mapping the mean value into the corresponding pixel points to form target fingerprint image data, and carrying out fingerprint identification according to the target fingerprint image data. According to the fingerprint identification method and device, multiple copies of initial fingerprint image data are obtained; the mean values of the pixel values of the corresponding pixel points in multiple copies of initial fingerprint image data are calculated; and the mean values are mapped into the corresponding pixel points, so as to form the target fingerprint image data. According to the method, the fingerprint image identification rate is improved by a mean value noise reduction method; the problem of low fingerprint image identification rate caused by noise points generated when a fingerprint sensor collects the fingerprint image data of the target finger is solved; and the use experience of a user is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of fingerprint identification, and in particular, to a method and device for fingerprint identification. Background technique [0002] With the progress and development of science, there are more and more ways of security authentication. Among them, the way of using fingerprints for security authentication has attracted more and more attention of users. [0003] At present, the fingerprint recognition technology provides a more accurate and fast authentication method for users, which avoids the situation that the user forgets to bring the magnetic card or the magnetic card is demagnetized due to improper use in the magnetic card authentication method of the prior art, and the authentication cannot be realized. The existing fingerprint recognition technology includes two parts: registration and authentication. First, the user collects the fingerprint image data of his target finger through the fin...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1347
Inventor 张强王立中周海涛蒋奎贺威
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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