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A method for monitoring fingerprint identification technology using near-infrared absorption

A fingerprint recognition technology and near-infrared technology, applied in the detection of active finger shape, character and pattern recognition, acquisition/organization of fingerprints/palmprints, etc. problems, to achieve a wide range of applications, promising results

Active Publication Date: 2020-10-02
NANJING UNIV OF INFORMATION SCI & TECH
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  • Description
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Problems solved by technology

However, there are still huge security risks in fingerprint identification technology at this stage.
It cannot identify the ontology identity of the features to be extracted, lacks real-time monitoring of the information image conversion process, and the characteristics of fingerprints that expose the body surface make information easy to be copied and stolen

Method used

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  • A method for monitoring fingerprint identification technology using near-infrared absorption
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  • A method for monitoring fingerprint identification technology using near-infrared absorption

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Embodiment Construction

[0047] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0048] A method for utilizing near-infrared absorption to monitor fingerprint identification technology, comprising the following steps:

[0049] Step 1) parameter initialization;

[0050] Step 2)

[0051]Estimate the effective area, remove the edge of the image and the part with little change in gray level, divide the fingerprint image into n×n (8≤n≤20) squares, n represents the number of divisions; calculate the gray area of ​​each square interval Degree mean and variance, if the two meet the conditions, the current grid is defined as an effective grid; connect all effective grids and perform post-processing to obtain the effective area of ​​the fingerprint, record length l, l represents the length of the shorter side of the area; at the same time , the information of the effective area of ​​the fingerprint is transmitted to the fiber op...

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Abstract

The invention discloses a method for monitoring fingerprint recognition technology by using near-infrared absorption. Based on the infrared absorption characteristics, by measuring the light absorbance of the capture cross-section in the wavelength range to perform curve fitting and least squares analysis, the best function matching of the data is obtained, and the coherence characteristics such as extreme values ​​are obtained by using the optimal expression and added mathematical analysis. By comparing the components of the database, the verification of the identity of the living body is realized. Due to the physiological structural characteristics of the thin and large blood vessel network in the superficial dermis and the absorption characteristics of hemoglobin and cytochrome in the specific near-infrared region, it cannot be imitated by other materials, and it is anti-counterfeiting and irreproducible. At the same time, with the near-infrared spectrum measurement technology becoming more and more mature, Fourier transform infrared spectrometers, raster scanners and other instruments can meet the relevant technical requirements. While ensuring efficiency, the method will greatly enhance the accuracy of identification, strengthen information security, realize enhanced information security, and realize double detection of information.

Description

technical field [0001] The invention relates to a method for using near-infrared absorption to monitor fingerprint identification technology, and belongs to the technical field of information security. Background technique [0002] In the highly informationized modern society, with the rapid development of communication, network, and financial technology, information security has shown unprecedented importance. In daily life, as well as in judicial, financial, security, e-commerce and many other occasions, identification technology that is more reliable, stable and not easy to forge is required. In recent years, with the development of science and technology and computers, some biometric identification technologies such as face recognition, fingerprint recognition, and iris recognition have been popularized. Among them, fingerprint recognition has become the most widely used method due to its lifelong invariance, uniqueness and convenience. Personal authentication method. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G01N21/35
CPCG01N21/359G01N2021/3595G06V40/1394G06V40/1318
Inventor 张小瑞蔡青孙伟朱利丰刘佳宋爱国
Owner NANJING UNIV OF INFORMATION SCI & TECH
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