Fingerprint identification method and device

A fingerprint identification and fingerprint technology, which is applied in the field of information security, can solve the problems of low identification efficiency and achieve the effect of improving the efficiency of fingerprint identification

Inactive Publication Date: 2015-10-28
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the need to find and match feature points one by one in the prior art, the recognition efficiency is low

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

[0022] figure 1 It is a schematic flow chart of the fingerprint recognition method provided in Embodiment 1 of the present invention, as shown in figure 1 shown, including:

[0023] Step 11, segmenting the input fingerprint image to obtain each sub-fingerprint image;

[0024] For example, in order to improve the recognition speed of the fingerprint image in the embodiment of the present invention, the fingerprint image may be divided in advance to obtain sub-fingerprint images. The specific division principle can be determined according to the configuration of the execution subject. If the execution subject of the embodiment of the present invention is configured with a multi-processor, multi-core processor, chip-level multi-processing or simultaneous multi-thread processor, it can be divided according to the processing capabilities of the above-mentioned processors or processors, or evenly divided fingerprint image.

[0025] Step 12, identifying and matching the feature p...

Embodiment 2

[0048] figure 2 It is a schematic flow chart of the fingerprint identification method provided by Embodiment 2 of the present invention. This embodiment uses a specific embodiment to describe the technical solution of the present invention in detail, as shown in figure 2 shown, including:

[0049] Step 21, extracting the overall feature of the input fingerprint image;

[0050] Wherein, the integral feature includes one of circular, arcuate and helical.

[0051] Step 22, matching the overall feature with the overall feature of the fingerprint stored in the fingerprint library;

[0052] If the matching is successful, go to step 23; otherwise, go to step 29.

[0053] Step 23. Segment the input fingerprint image according to the current computing capability of each computing core to obtain each sub-fingerprint image;

[0054] Step 24, each sub-fingerprint image is assigned to a corresponding computing core, and each computing core identifies and matches the feature points co...

Embodiment 3

[0065] image 3 A schematic structural diagram of the fingerprint recognition device provided in Embodiment 3 of the present invention, as shown in image 3 As shown, it specifically includes: a fingerprint image segmentation module 31, a feature recognition matching module 32, a matching feature point statistics module 33 and a prompt module 34;

[0066] The fingerprint image segmentation module 31 is used to segment the input fingerprint image to obtain each sub-fingerprint image;

[0067] The feature identification and matching module 32 is used to identify and match feature points contained in each sub-fingerprint image in parallel;

[0068] The matching feature point statistics module 33 is used to count the total number of feature points matched;

[0069] The prompting module 34 is used to prompt that the fingerprint identification is successful when the total number of matching feature points obtained by the matching feature point statistics module 33 exceeds a preset...

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PUM

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Abstract

The invention discloses a fingerprint identification method and device. The method comprises the steps that an input fingerprint image is segmented to acquire sub fingerprint images; feature points in the sub fingerprint images are identified and matched; the total number of matched feature points is counted; and if the total number of matched feature points exceeds a preset numerical value, successful fingerprint identification is prompted. According to the embodiment of the invention, the identification efficiency is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of information security, and in particular to a fingerprint identification method and device. Background technique [0002] With the development of science and technology, in fingerprint identification technology, it is necessary to detect the feature points in a fingerprint image, because the fingerprint lines are not continuous, smooth and straight, but often interrupt, bifurcate or turn. These breakpoints, bifurcation points and turning points are called "characteristic points". The characteristic points provide the confirmation information of the uniqueness of the fingerprint, the most typical of which are terminal points and bifurcation points, and others include bifurcation points, isolated points, loop points, short lines, etc. If these feature points are found and matched with the preset feature points, it means that the authentication is passed. [0003] The existing fing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1365
Inventor 曾元清
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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