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Fingerprint image processing method, fingerprint identification device and electronic equipment

A fingerprint image and fingerprint recognition technology, applied in character and pattern recognition, instruments, calculations, etc., can solve problems that affect the correct recognition rate of the fingerprint recognition system, common-mode noise interference, image blur, etc., and achieve enhanced anti-common-mode interference capabilities , Reduce common mode interference noise, improve recognition sensitivity

Active Publication Date: 2021-10-15
SILEAD
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Problems solved by technology

[0003] However, in the actual application of mobile terminals such as mobile phones, the image detected by the fingerprint recognition sensor system will become blurred due to common-mode noise interference, dirty finger surface or other reasons, thus affecting the correct recognition of the fingerprint recognition system. Rate

Method used

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  • Fingerprint image processing method, fingerprint identification device and electronic equipment
  • Fingerprint image processing method, fingerprint identification device and electronic equipment
  • Fingerprint image processing method, fingerprint identification device and electronic equipment

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Embodiment Construction

[0048] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application. For example, in the following description, forming the second component above the first component may include an embodiment in which the first component and the second component are formed in direct contact, and may also include an embodiment in which the first component and the second component are formed in indirect contact ( That is, the...

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Abstract

Embodiments of the present application provide a fingerprint image processing method, a fingerprint identification device, and electronic equipment. The fingerprint image processing method includes: acquiring fingerprint image data collected by multiple channels, and extracting a first image set therefrom; the first The elements of the image collection are fingerprint images collected by multiple acquisition channels in any same batch; each element in the first image collection is subjected to grayscale value reduction processing, so that the grayscale value in the first image collection The gray value of the smallest element is reduced to zero, so as to obtain the second image set; the gray value amplification processing is performed on each element in the second image set. The embodiment of the present application can suppress the interference of the common mode noise and improve the sensitivity of the fingerprint identification system.

Description

technical field [0001] The present application relates to the technical field of fingerprint image processing, in particular to a fingerprint image processing method, a fingerprint identification device and electronic equipment. Background technique [0002] At present, fingerprint recognition sensor systems are widely used in electronic devices such as mobile terminals, and fingerprint recognition sensors often adopt the principles of capacitive, optical or ultrasonic methods. [0003] However, in the actual application of mobile terminals such as mobile phones, the image detected by the fingerprint recognition sensor system will become blurred due to common-mode noise interference, dirty finger surface or other reasons, thus affecting the correct recognition of the fingerprint recognition system. Rate. Therefore, how to suppress the interference of common mode noise and improve the sensitivity of the fingerprint recognition system is a technical problem that needs to be s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/40
CPCG06V40/1347G06V10/30
Inventor 杨军李彬苏荻
Owner SILEAD
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