Fingerprint acquisition method and device, mobile terminal and storage medium

A mobile terminal, fingerprint collection technology, applied in character and pattern recognition, computer parts, computing, etc., can solve the problems of increased unlocking failure rate, over-exposure of fingerprint images, and degradation of fingerprint image quality, so as to reduce the problem of over-exposure. , Reduce strong light incidence, improve the effect of fingerprint image quality

CN113963381APending Publication Date: 2022-01-21ONEPLUS TECH SHENZHEN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-01-21

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Abstract

The embodiment of the invention relates to a fingerprint acquisition method and related products, and the method comprises the steps: obtaining a finger pressing area through a fingerprint sensing chip, obtaining environment light sensing data through an AP, and determining a preset pressing area threshold value according to the environment light sensing data, and determining whether to report a finger pressing event to the AP through the fingerprint sensing chip according to a preset pressing area threshold value and the finger pressing area, and controlling the fingerprint sensing chip to acquire a fingerprint image through the AP if it is determined that the finger pressing event is reported. According to the fingerprint acquisition method, the preset pressing area threshold value is dynamically adjusted according to the intensity of the ambient light, the subsequent fingerprint acquisition process is started only when the finger pressing area is large enough in the strong light environment, in conclusion, the finger pressing area can be dynamically adjusted according to the intensity of the ambient light, then the strong light incidence is reduced, the fingerprint image overexposure problem is reduced, and the fingerprint image quality is improved.
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Description

technical field

[0001] The invention relates to the technical field of fingerprint collection, in particular to a fingerprint collection method, device, mobile terminal and storage medium. Background technique

[0002] At present, the unlocking methods of many mobile terminals include fingerprint unlocking. The fingerprint unlocking process includes two processes: fingerprint collection and fingerprint matching. It is to match the collected fingerprint image with the preset fingerprint image. If the match is successful, the fingerprint unlocking is successful. Therefore, the quality of the fingerprint image is crucial, which directly affects the success rate of fingerprint unlocking.

[0003] However, in the current traditional technology, since the optical fingerprint acquisition is calculated based on the light calibration reference value of the fingerprint area of ​​the display screen. During the fingerprint collection process, the display screen of the mobile terminal ...

Examples

Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] It should be noted that, if there is no conflict, various features in the embodiments of the present invention may be combined with each other, and all of them are within the protection scope of the present invention. In addition, although the functional modules are divided in the schematic diagram of the device, and the logical order is shown in the flowchart, in some cases, the division ...