Fingerprint identification method and related device

A fingerprint recognition and fingerprint feature technology, used in character and pattern recognition, instruments, computer parts, etc., can solve the problems of high rejection rate, texture distortion, and low resolution of regional fingerprint images.

Active Publication Date: 2019-06-25
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Finger texture distortion will occur under conditions such as immersion and low temperature, and the image resolution of regional fingerprints is low. If the original local feature matching algorithm is used, the rejection rate will be high.

Method used

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

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Embodiment Construction

[0023] Fingerprint identification technology corresponds a person with his fingerprints, and by comparing his fingerprints with pre-saved fingerprints and identifying them through the detailed feature points of different fingerprints, his true identity can be verified. Feature points refer to breakpoints, bifurcation points and turning points where fingerprint lines often appear interrupted, bifurcated or turned. Each person's fingerprint lines are unique in their patterns, breakpoints, bifurcation points and turning points. And its uniqueness is invariable throughout life. It is by virtue of this uniqueness and stability that we can create fingerprint recognition technology. Fingerprint recognition technology has the advantages of fast recognition speed, convenient collection and low price, and is widely used in image processing, pattern recognition, computer vision and many other disciplines. Such as figure 1 as shown, figure 1 A schematic diagram of collecting fingerprin...

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Abstract

The embodiment of the invention discloses a fingerprint recognition method and a related device. The method comprises: collecting a first fingerprint image of a user finger through a fingerprint module; converting the first fingerprint image into a second fingerprint image, wherein each pixel point in the second fingerprint image is determined according to a plurality of pixel points in the firstfingerprint image; generating a plurality of fingerprint feature sets of the user finger according to the second fingerprint image, each fingerprint feature set comprising a fingerprint feature point,an associated texture feature of the fingerprint feature point, a feature point matching weight and a texture matching weight, the associated texture feature comprising description information for reflecting a contour of a line where the fingerprint feature point is located; performing fingerprint comparison operation on the plurality of fingerprint feature sets to obtain a comparison result of each fingerprint feature set; and determining a fingerprint identification result according to a comparison result of the plurality of fingerprint feature sets. According to the embodiment of the invention, the false rejection rate FRR of fingerprint identification is reduced, and the fingerprint identification accuracy of the electronic device is improved.

Description

technical field [0001] The present application relates to the technical field of electronic equipment, in particular to a fingerprint identification method and a related device. Background technique [0002] The current unlocking methods for electronic devices such as full-screen mobile phones mainly include 3D structured light and under-screen fingerprint solutions. Due to the limitation of the sensing area of ​​the single-point under-screen fingerprint, the user must press the designated position when unlocking, which is not good for the unlocking speed and user experience. A larger sensing area is what users want, and regional fingerprints or even full-screen fingerprints are the development trend of under-screen fingerprint solutions. The fingerprint under the screen uses the OLED display as the original light source. Due to the difference in reflection of light by the valleys and ridges of the fingerprint on the contact surface of the finger and the glass, the photosen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 占文喜
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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