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Method utilizing near infrared absorption to monitor fingerprint identification technology

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: 2017-08-25
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Method utilizing near infrared absorption to monitor fingerprint identification technology
  • Method utilizing near infrared absorption to monitor fingerprint identification technology
  • Method utilizing near infrared absorption to monitor fingerprint identification technology

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Embodiment Construction

[0051] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] A method for utilizing near-infrared absorption to monitor fingerprint identification technology, comprising the following steps:

[0053] Step 1) parameter initialization;

[0054] Step 2)

[0055]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 both meet the conditions, the current grid is defined as a valid grid; connect all valid grids and perform post-processing to obtain the effective fingerprint area, 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 optic probe, and the in...

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Abstract

The invention discloses a method utilizing near infrared absorption to monitor the fingerprint identification technology. Based on infrared absorption characteristics, a light absorption degree of a cross section in a wavelength scope is measured to carry out curve fitting, a least square method is utilized to carry out analysis and fitting to acquire optimum function matching of data, coherent characteristics, e.g., an extremum, are solved through utilizing an optimal expression, and mathematics analysis is further carried out; through comparing database components, live identity verification is realized; based on a thinness characteristic of a dermis superficial vascular network, a physiological structure characteristic of large blood volume, and the absorption characteristic of ferrohemoglobin and cytochromes in a specific near infrared region, copy through other materials can not be realized, and anti-counterfeiting property and non replicability are realized, moreover, as the near infrared spectrum determination technology becomes mature gradually, relevant technical requirements can be further satisfied through Fourier transform infrared spectrometers and raster scanners. The method is advantaged in that identity identification accuracy is substantially improved on the condition that efficiency is guaranteed, information safety is improved, high information safety is realized, and dual information detection is realized.

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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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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