Unlock instant, AI-driven research and patent intelligence for your innovation.

Fingerprint image acquisition method and device

A fingerprint image and acquisition method technology, applied in character and pattern recognition, instruments, computer components, etc., can solve the problems of bright in the middle and dark around the fingerprint image, achieve uniform brightness, improve signal-to-noise ratio, improve accuracy and recognition efficiency effect

Active Publication Date: 2019-06-07
SILEAD
View PDF13 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides a fingerprint image acquisition method and device to solve the problem in the prior art that the fingerprint image collected by the under-screen fingerprint recognition has a bright middle and dark surroundings

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fingerprint image acquisition method and device
  • Fingerprint image acquisition method and device
  • Fingerprint image acquisition method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The principle and spirit of the present application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, rather than to limit the scope of the present application in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0031] Those skilled in the art know that the embodiments of the present application may be realized as a system, device, method or computer program product. Therefore, the disclosure of the present application can be specifically implemented in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0032] Considering that the imaging lens of the existing ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a fingerprint image acquisition method and device, and the method comprises the steps: obtaining a fingerprint image acquisition request; in response to the fingerprint image acquisition request, acquiring a fingerprint image through a light source, a lens and a photosensitive device, wherein the variation trend of the brightness curve of the light spot formed by the light source on the fingerprint identification area is opposite to the variation trend of the lens brightness distortion curve of the lens. In the embodiment of the invention, the change trend of the brightness curve of the light spot is opposite to the change trend of the brightness distortion curve of the lens. Therefore, the image acquired by adopting the fingerprint image acquisition method can counteract or weaken the lens brightness distortion effect, so that the background brightness of the center and the periphery of the formed fingerprint image is more uniform, the signal to noise ratio of the edge area of the fingerprint image is improved, and the fingerprint identification accuracy and the identification efficiency are improved.

Description

technical field [0001] The present application relates to the technical field of fingerprint identification, in particular to a fingerprint image acquisition method and device. Background technique [0002] Fingerprint recognition technology has been widely used in the process of unlocking the display screen and applications of mobile terminals. At present, as more and more mobile terminals begin to adopt full screens, the fingerprint recognition technology under the screen has become a mobile terminal fingerprint recognition technology. the trend of. [0003] At present, under-screen fingerprint image acquisition generally adopts the method of camera imaging. Among them, when the user touches the fingerprint identification area with a finger, the light source is turned on and emits light to illuminate the finger. The position of the upper ridge of the finger will undergo diffuse reflection and the brightness will decrease, and the position of the valley will increase the b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06K9/00
Inventor 焉逢运林明汉程泰毅
Owner SILEAD