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Method and device for identity authentication

An identity verification and verification technology, applied in the field of biometrics, can solve the problems of low security and reliability, and achieve the effect of improving security and reliability

Inactive Publication Date: 2014-04-30
SHANGHAI YUNHENG TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and device for identity verification to solve the problem of low security and reliability in the prior art of using a camera device to acquire images for biometric identification

Method used

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  • Method and device for identity authentication

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example 1

[0049] First, the average value of all the pixel values ​​of the RGB color channels in the ROI of the biometric image of the person to be verified is obtained to generate an original signal, and then the Laplacian feature mapping algorithm is used to extract the PPG signal from the original signal. Generally, PPG medical equipment includes a light emitter and a receiver. The light emitter emits a light beam of a specific wavelength. When it is irradiated on the surface of the human skin, the light beam reaches the receiver through transmission or reflection. In this process, the light beam is affected by the human skin muscles. The absorption of tissue and blood causes a certain attenuation of light intensity. Since the change in blood volume caused by the periodic heartbeat will affect the change in the amount of light absorbed by the skin and blood, the intensity of the light received by the receiver changes pulsatingly, and this light intensity change signal is converted into...

example 2

[0053] First, obtain the average value of all the pixel values ​​of each RGB channel picture in the ROI of the biometric image of the person to be verified to generate three original signals corresponding to the RGB color channels, and compare the amplitudes of the three original signals, An original signal with the largest amplitude is selected therefrom, and the PPG signal is extracted from the original signal. Subsequently, perform FFT (Fast Fourier Transformation, Fast Fourier Transformation) on the extracted PPG signal to obtain an energy spectrum, and select a part of the spectrum within a predetermined frequency range from the energy spectrum obtained after FFT transformation as the BVP signal, preferably Considering that the human pulse range is generally between 45bpm (Beat Per Minute) and 240bpm, the energy spectrum between 0.75Hz and 4Hz can be selected.

[0054] After obtaining the BVP signal, it is detected whether there is a periodic peak in the BVP signal within a ...

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Abstract

The invention discloses a method and device for identity authentication. The method includes the steps that a biological characteristic image of a person to be authenticated is obtained through a camera device, the obtained biological characteristic image of the person to be authenticated is matched with a pre-stored biological characteristic image, bio-assay is carried out on the person to be authenticated on the basis of a blood volume pulse signal of the person to be authenticated, and the person to be authenticated passes the identity authentication when the obtained biological characteristic image of the person to be authenticated is successfully matched with the pre-stored biological characteristic image and the person to be authenticated passes the bio-assay on the basis of the blood volume pulse signal. According to the method and device, biological identification is combined with the bio-assay carried out on the person to be authenticated through the blood volume pulse signal; when the camera device is used for obtaining the biological characteristic image of the person to be authenticated for biological identification, the bio-assay is carried out through the blood volume pulse signal, and safety and reliability of biological identification are improved.

Description

Technical field [0001] The present invention relates to biological identification technology, in particular to a method and device for identity verification. Background technique [0002] Due to the characteristics of stability, uniqueness and convenience of biometrics, the use of biometrics as a means for authentication has gradually replaced traditional methods of identification such as keys and passwords. Biometrics technology refers to the use of some biological characteristics of the human body, such as human face, iris, fingerprints, palm prints, hand shape, etc., to perform identity recognition technology, which mainly includes: collecting images, extracting biometric information from the collected images, Then, the extracted characteristic information is matched with all or part of the pre-registered characteristic information in the database, and the identity verification of the authenticatee is performed according to the matching result. [0003] A non-contact biometric ...

Claims

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Application Information

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IPC IPC(8): G06F21/32
CPCG06F21/32
Inventor 雷量卢茂强李辉
Owner SHANGHAI YUNHENG TECHNOLOGY CO LTD
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