Fingerprint identification method and electronic device

A fingerprint recognition and electronic device technology, which is applied in character and pattern recognition, acquisition/organization of fingerprints/palmprints, print image capture, etc., can solve the problems of time-consuming comparison process and affecting user experience

Active Publication Date: 2021-11-12
BYD SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, usually, the above-mentioned comparison process needs to compare hundreds of feature points, and each feature point has about 40 to 60 description values, which makes the above-mentioned comparison process more time-consuming and affects user experience.

Method used

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  • Fingerprint identification method and electronic device
  • Fingerprint identification method and electronic device
  • Fingerprint identification method and electronic device

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Embodiment Construction

[0085] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0086] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0087] In the descr...

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PUM

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Abstract

The fingerprint identification method disclosed in the present invention includes: collecting a fingerprint image to be compared, extracting a plurality of feature points of the fingerprint image to be compared and calculating a plurality of description values ​​corresponding to each feature point; calculating a retrieval value of each feature point; Compare the fingerprint image to be compared with a template image, specifically including: first compare the retrieval value of the feature point with the retrieval value of the template feature point, if the retrieval value of the feature point matches the retrieval value of the template feature point, continue to compare The description value of the feature point and the description value of the template feature point are used to judge whether the feature point matches the template feature point; A template feature point is compared; the number of times that different feature points match different template feature points is counted to determine whether the fingerprint image to be compared matches the template image. The above-mentioned fingerprint recognition method can improve the speed of fingerprint comparison. The invention also discloses the electronic device.

Description

technical field [0001] The invention relates to the field of fingerprint identification, and more specifically, to a fingerprint identification method and an electronic device. Background technique [0002] In related technologies, a fingerprint recognition function on a terminal, such as a mobile phone, is already a standard configuration. The fingerprint recognition function can be applied to various operations related to user fingerprints on the terminal, including but not limited to terminal unlocking, password modification, fingerprint template modification and addition, and payment operations. [0003] Therefore, in the above operations, the speed of fingerprint comparison is very important to user experience, and users can directly feel the speed of related operations. At present, the fingerprint comparison algorithm uses the image comparison method. By finding the position and type of the relevant feature points on the fingerprint image to be compared, and then calc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/1306G06V40/1365G06F18/00
Inventor 李振刚徐坤平杨云
Owner BYD SEMICON CO LTD
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