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Fingerprint identification method and device

A fingerprint identification and fingerprint image technology, applied in the Internet field, can solve problems that affect the accuracy of identification

Pending Publication Date: 2020-11-06
HANGZHOU EZVIZ SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that this fingerprint recognition method is greatly affected by factors such as pressing force, pressing area, pressing angle, stains, sweat stains, etc., thus affecting the recognition accuracy.

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

[0032] This embodiment provides a fingerprint identification method, which can perform fingerprint identification more accurately. It is assumed that the execution subject can identify the device by fingerprint, or the processor in the identity authentication device. The specific flow diagram of this embodiment is as follows figure 1 shown, including:

[0033] Step 102: Obtain the fingerprint image collected by the non-contact image collection device.

[0034] As mentioned above, the current popular fingerprint recognition is usually the pressing type, that is, the finger is in contact with the fingerprint sensor, which may affect the accuracy of fingerprint recognition due to differences in pressing force, pressing area, pressing angle, stains, and sweat stains. Therefore, in this step, the fingerprint image can be collected through a non-contact image collection device.

[0035] Specifically, the non-contact image acquisition device may be an optical camera, such as a fro...

Embodiment 2

[0083] Based on the same idea, Embodiment 2 of the present application provides a fingerprint identification device, which can perform fingerprint identification more accurately. The schematic diagram of the device is shown in Figure 7 As shown, it includes: an image acquisition unit 202, an image processing unit 204, and a fingerprint recognition unit 206, wherein,

[0084] The image acquisition unit 202 can be used to acquire the fingerprint image collected by the non-contact image acquisition device;

[0085] The image processing unit 204 can be used to perform filtering and grayscale processing on the fingerprint image to obtain a grayscale image;

[0086] The image processing unit 204 may be configured to perform contrast enhancement on the grayscale image to obtain a contrast-enhanced image;

[0087] The fingerprint identification unit 206 may be configured to extract fingerprint features from the contrast-enhanced image, and perform fingerprint identification based o...

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Abstract

The invention discloses a fingerprint identification method and device. The method comprises the following steps: acquiring a fingerprint image acquired by non-contact image acquisition equipment; performing filtering and gray processing on the fingerprint image to obtain a gray image; performing contrast enhancement on the grayscale image, so that a contrast-enhanced image can be obtained; and performing fingerprint feature extraction on the contrast-enhanced image, and performing fingerprint identification based on an extraction result.

Description

technical field [0001] The present application relates to the Internet field, and in particular to a fingerprint identification method and device. Background technique [0002] Identity authentication based on biometrics is widely used in various fields, and fingerprint recognition is one of the most widely used biometrics. [0003] At present, the more popular fingerprint recognition is contact fingerprint recognition, such as pressing your finger on the fingerprint sensor to obtain fingerprint information and use it for identity authentication. However, in practical applications, it is found that this fingerprint identification method is greatly affected by factors such as pressing force, pressing area, pressing angle, stains, sweat stains, etc., thereby affecting the identification accuracy. Therefore, there is an urgent need for a solution to improve the accuracy of fingerprint recognition. Contents of the invention [0004] The embodiment of the present application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1347G06V40/1318G06V40/1365
Inventor 王卫静
Owner HANGZHOU EZVIZ SOFTWARE CO LTD
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