Terminal and a fingerprint imaging method

An imaging method and fingerprint image technology, which can be used in instruments, character and pattern recognition, computer parts, etc., and can solve problems such as difficult fingerprint recognition.

Inactive Publication Date: 2017-10-13
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to propose a terminal and a fingerprint imaging method, aiming to solve the problem that in the prior art, if the existing fingerprint algorithm is used to process fingerprints of different skin colors, the fingerprints of some people may be difficult to identify.

Method used

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  • Terminal and a fingerprint imaging method

Examples

Experimental program
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Effect test

no. 1 example

[0075] This embodiment provides a terminal, see figure 2 , figure 2 It is a schematic diagram of a terminal provided in the first embodiment of the present invention, the terminal includes: an acquisition module 201, an image preprocessing module 202, a statistical module 203, a processing module 204, and an output module 205, wherein,

[0076] Collection module 201, for collecting fingerprints;

[0077] The fingerprint can be from users with different skin colors. When collecting fingerprints, the fingerprint of the user's finger is detected by the principle of light reflection. Fingers with different skin colors have different reflection capabilities to light;

[0078] see image 3 , image 3 A schematic diagram of detecting the fingerprint of a user's finger by using the principle of light reflection provided in this embodiment, image 3 In the process, put your finger on the glass cover 301, and the finger is irradiated by the light source of the built-in LED302. The...

no. 2 example

[0117] This embodiment provides another terminal. The functions performed by the functional modules of the terminal in the first embodiment can be performed by figure 1 Part of the hardware is implemented, of course, the functions performed by each hardware can also be implemented by the above functional modules. The functions of the above functional modules are specifically realized by the following hardware:

[0118] The function of collection module 201 can be realized by user input unit 110; User input unit 110 allows user to input various types of information, and can include keyboard, dome, touch pad (for example, detect the resistance caused by being touched, Touch-sensitive components with changes in pressure, capacitance, etc.), scroll wheels, joysticks, etc.;

[0119] The functions of the image preprocessing module 202, the statistical module 203, the processing module 204, the output module 205, the extraction module 206, and the comparison module 207 can all be re...

no. 3 example

[0160] This embodiment provides a fingerprint imaging method, see Figure 6 , Figure 6 A flowchart of a fingerprint imaging method provided in this embodiment, the method includes the following steps:

[0161] S601: collecting fingerprints;

[0162] The fingerprint can be from users with different skin colors. When collecting fingerprints, the fingerprint of the user's finger is detected by the principle of light reflection. Fingers with different skin colors have different reflection capabilities to light;

[0163] see image 3 , image 3 A schematic diagram of detecting the fingerprint of a user's finger by using the principle of light reflection provided in this embodiment, image 3 In the process, put your finger on the glass cover 301, and the finger is irradiated by the light source of the built-in LED302. The angle of refraction of the light emitted by the light source of the LED302 on the uneven lines of the fingerprint on the surface of the finger and the brightn...

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Abstract

The invention discloses a terminal and a fingerprint imaging method. The terminal comprises a collection module used for collecting a fingerprint, an image processing module used for preprocessing the image of the fingerprint to generate a grayscale map of the fingerprint, a statistical module used for doing statistics of the grayscale distribution in the grayscale map and generating a grayscale distribution map, a processing module used for cutting a section with the gray values smaller than a first threshold and / or a section with the gray values greater than a second threshold from the grayscale distribution map and stretching the grayscale of the grayscale distribution map after cutting according to preset rules, and an output module used for taking a fingerprint image corresponding to the grayscale distribution map after stretching as a target fingerprint image and outputting the target fingerprint image. Through the technical scheme, fingerprint imaging data of different skin colors can be processed differently, the details of user fingerprints can be reflected more accurately by enlarging difference, the ability of image identification is improved, and the user experience is improved.

Description

technical field [0001] The present invention relates to the technical field of terminals, and more specifically, to a terminal and a fingerprint imaging method. Background technique [0002] At present, terminals such as mobile phones have become indispensable consumer goods in people's lives, and with the popularization of mobile phones, mobile payment, as an emerging online payment method, is more and more accepted due to its convenience, speed, and high real-time characteristics. favored by people. At the same time, it has brought a series of payment security issues, and because of security requirements, as an important security encryption technology, fingerprints are gradually becoming the standard configuration of mobile phones. [0003] In the era of fighting for beauty, the demand for integrated mobile phones has been magnified, and optical fingerprints are becoming a trend because of the penetrability of light, which can be hidden under glass and ceramic covers. ...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1359G06V40/1324
Inventor 宁耀东
Owner NUBIA TECHNOLOGY CO LTD
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