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Fingerprint detection method, device and electronic device

A fingerprint detection and fingerprint image technology, which is applied in the acquisition/organization of fingerprints/palmprints, character and pattern recognition, and print image acquisition, etc. It can solve the problems of large signal gap, poor finger edge contact, and low fingerprint recognition rate.

Active Publication Date: 2021-04-27
SHENZHEN GOODIX TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The application of the optical fingerprint device brings users a safe and convenient user experience. However, since the optical fingerprint device can be realized by using the principle of lens imaging through a small hole, due to the optical imaging principle of the lens, the center of the pixel array of the optical fingerprint device The amount of light entering the area is larger than that of the edge area, which leads to a larger signal amount in the central area of ​​the fingerprint image than in the edge area. That is to say, the central area of ​​the fingerprint image is clear and the edge area is blurred. In case of poor contact, the gap between the semaphores of the two is larger, which eventually leads to a lower fingerprint recognition rate.

Method used

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  • Fingerprint detection method, device and electronic device
  • Fingerprint detection method, device and electronic device
  • Fingerprint detection method, device and electronic device

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Embodiment Construction

[0074] The technical solution in this application will be described below with reference to the accompanying drawings.

[0075] As a common application scenario, the optical fingerprint system provided by the embodiment of this application can be applied to smartphones, tablet computers, and other mobile terminals with display screens or other terminal devices; more specifically, in the above terminal devices, fingerprint recognition The device may specifically be an optical fingerprint device, which may be arranged in a partial or entire area under the display screen, thereby forming an under-display optical fingerprint system. Alternatively, the fingerprint identification device may also be partly or fully integrated into the display screen of the terminal device, thereby forming an in-display optical fingerprint system.

[0076] Figure 1A and Figure 1B It shows a schematic diagram of an electronic device to which the embodiment of the present application can be applied, ...

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Abstract

A method, device and electronic device for fingerprint detection, the method comprising: respectively collecting a plurality of fingerprint images based on a plurality of optical parameters, wherein the optical parameters include at least one of exposure duration and light intensity, and the fingerprint images are The optical fingerprint sensor obtains based on the fingerprint detection signal, the exposure duration is the duration for the optical fingerprint sensor to collect the fingerprint detection signal, and the light intensity is the intensity of the optical signal emitted by the excitation light source for fingerprint detection; according to multiple The partial fingerprint images are spliced ​​to obtain the target fingerprint image for fingerprint identification; wherein, the multiple partial fingerprint images are from different fingerprint images in the multiple fingerprint images, and the areas of the multiple partial fingerprint images are at least The parts do not overlap, and the multiple partial fingerprint images correspond to different optical parameters.

Description

technical field [0001] The present application relates to the technical field of optical fingerprints, and more specifically, to a fingerprint detection method, device and electronic equipment. Background technique [0002] The application of the optical fingerprint device brings users a safe and convenient user experience. However, since the optical fingerprint device can be realized by using the principle of lens imaging through a small hole, due to the optical imaging principle of the lens, the center of the pixel array of the optical fingerprint device The amount of light entering the area is larger than that of the edge area, which leads to a larger signal amount in the central area of ​​the fingerprint image than in the edge area. That is to say, the central area of ​​the fingerprint image is clear and the edge area is blurred. In the case of poor contact, the gap between the two semaphores is even greater, which eventually leads to a lower fingerprint recognition rate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/1318G06V40/1347
Inventor 谢良辉丘芳芳
Owner SHENZHEN GOODIX TECH CO LTD