WO2016127765A1

WO2016127765A1 - Authentication device and authentication method combining finger vein recognition with wrist vein recognition and fingernail recognition

Info

Publication number: WO2016127765A1
Application number: PCT/CN2016/071410
Authority: WO
Inventors: 张丽琴
Original assignee: 张丽琴
Priority date: 2015-02-12
Filing date: 2016-01-20
Publication date: 2016-08-18
Also published as: CN104636731A; CN104636731B

Abstract

An authentication device (1) combining finger vein recognition with wrist vein recognition and fingernail recognition. The authentication device (1) is characterized by comprising a finger vein characteristic collection device (2), a fingernail characteristic information collection device (3), and a wrist vein characteristic information collection device (4). The three devices are disposed on a table body (6) side by side, and authentication is performed by using a matched group of three kinds of characteristic information collected by the devices. The authentication device can greatly improve the accuracy and the reliability of identity authentication in the security field.

Description

Authentication device and authentication method using finger vein recognition combined with wrist vein recognition and nail recognition

Technical field

The invention relates to the technical field of identification and authentication using biometrics, in particular to an authentication device and an authentication method using finger vein recognition combined with wrist vein recognition and nail recognition.

Background technique

As the requirements for personal items, internal networks, building access, Internet, and even e-commerce become more stringent, the need for identity authentication technology is becoming more and more urgent, and biometrics is a secure and convenient identification. The method, wherein the fingerprint identification technology is currently the most convenient, reliable, non-invasive and relatively mature biometric technology solution. However, fingerprint identification technology itself has its own defects: for example, some people or certain groups have few fingerprint feature information, which can not meet the filing requirements; in addition, the criminal fingerprint database of automatic fingerprint identification system is widely used in global judicial practice. It makes people feel wary; in addition, each time the fingerprint is used, the fingerprint of the user is left on the fingerprint collector, and these fingerprint traces have the possibility of being used to copy the fingerprint. In the prior art, common biometric recognition technologies include, for example, fingerprint recognition, face recognition, etc., fingerprint recognition may be subject to many restrictions, sudden changes in finger skin may affect the effect of fingerprint recognition, and fingerprints of some people or certain groups. Because there are fewer features, it is difficult to image, and fingerprint wear or wrist contamination causes the accuracy to be affected. In addition, the shape of the face is very unstable, and people can generate many expressions through changes in the face, but in different observations. Angle, the visual image of the face is also very different. In addition, face recognition is also subject to lighting conditions (such as day and night, indoor and outdoor, etc.), many coverings of the face (such as masks, sunglasses, hair, beards, etc.) The influence of many factors such as age. Face recognition is not much different between different individuals. The structure of all faces is similar. Even the structural shapes of facial organs are similar, which is unfavorable for distinguishing human individuals with faces.

The finger vein authentication technology developed on the basis of the above biometric recognition technology has appeared in recent years, and it is a new biometric recognition technology, which uses the vein distribution image in the finger to perform identity recognition. There is little or no contact during identification, and there is no danger that the surface features of the finger will be maliciously copied by the third party; the system acquires the characteristics that exist only when the finger is in the living body, and the non-living finger does not have the characteristics of the vein image, and thus It is impossible to make a fake, but the finger veins may still change with age and physiology. The permanentness has not been confirmed. Although the possibility is small, there is still the possibility that the registration cannot be successfully completed. Therefore, from the current authentication method, there is a low degree of authentication, resulting in insecurity or other problems. And the damage, wear, dryness or too wet of the surface of the finger can also cause recognition obstacles, which makes the accuracy and accuracy of the certification affected.

Summary of the invention

The present invention aims to solve the above technical problems, and proposes an authentication device and an authentication method using finger vein recognition combined with wrist vein recognition and nail recognition, so that the authentication device and the authentication method can have higher anti-counterfeiting and practicality. And improve the accuracy of the certification. The present invention has been achieved in the following manner in order to solve the above technical problems.

The authentication device provided by the invention combining the finger vein recognition with the wrist vein recognition and the nail recognition comprises a wrist vein characteristic information collecting device, a nail characteristic information collecting device connected thereto and a finger vein characteristic information collecting device, and the nail characteristic information collecting device The device and the finger vein characteristic information collecting device and the wrist vein characteristic information collecting device are arranged side by side on the table body, and the palm passes through the wrist vein characteristic information collecting device and then extends into the finger vein characteristic information collecting device and the nail characteristic information collecting device. In the device, the wrist is placed on the placement seat in the wrist vein characteristic information collecting device, and the finger is placed on the finger placement seat in the finger vein feature information collecting device and the nail feature information collecting device, and the wrist vein characteristic information is The acquisition device can be moved and adjusted on the table. In addition, the authentication device further includes a feature information storage unit, a data processing unit, a matching feature information comparison unit, a controller, and an input/output interface, wherein the finger vein feature information collection device, the nail feature information collection device, and the wrist vein feature information collection device Each of them is connected to the feature information storage unit, the feature information storage unit is connected to the data processing unit, the data processing unit is connected to the matching feature information comparison unit, and the input/output interface is connected to the matching feature information comparison unit. The wrist vein characteristic information collecting device is responsible for collecting information required for the wrist vein identification, the nail characteristic information collecting device collects information required for nail recognition, and the finger vein characteristic information collecting device collects information required for finger vein feature recognition, and the wrist vein characteristic information The information required for the identification of the wrist vein collected by the collecting device and the finger vein characteristic information collected by the finger vein characteristic information collecting device and the information required for the nail recognition collected by the nail characteristic information collecting device are saved to the feature information holding unit, and the characteristic information comparison unit is The feature information storage unit retrieves corresponding biometric information, and the feature information comparison unit includes an image extraction unit and a sample data storage unit, and the image extraction unit receives the wrist vein feature information and the nail feature information in real time. The finger vein characteristic information is analyzed and processed to extract the characteristic value of the authenticator, and the sample data storage unit stores the wrist vein characteristic information of the pre-acquired authenticator obtained through the input/output interface, Finger vein feature information collecting device and nail feature information. In addition, the feature information comparison unit in the authentication device using the finger vein recognition combined with the wrist vein recognition and the nail recognition of the present invention can independently select the extracted feature value of the authenticator and the wrist of the pre-acquired authenticator. Comparing the facial vein characteristic information, the finger vein characteristic information and the nail characteristic information, and transmitting the result of the comparison to the first controller; the first controller is connected with the characteristic information comparison portion, and the first controller is based on the characteristic information The comparison result signal of the comparison unit controls the corresponding prompting device to give the result of the authentication. In addition, the above-mentioned input/output interface can also be connected to the network to further connect with the remote main server, perform data information transmission or authentication information verification, can be backed up regularly, and can be seamlessly connected with the WIS database.

The wrist vein characteristic information collecting device is connected to the collecting device of the finger vein characteristic information, wherein the wrist vein characteristic information collecting device comprises a first infrared imaging light source, an infrared imaging device and a wrist sensor, and when the authentication wrist is close to the device, the authentication is performed. The device automatically enters the power on state. When the incident light has a wavelength of 720 nm to 1100 nm, it can penetrate the bone and wrist muscles better, and the wrist vascular structure is highlighted. The wavelength range belongs to near-infrared light. Through the comparison test of several sets of infrared light sources with different wavelengths, we found that infrared light with a wavelength of 850 nm has better contrast effect and the image of the wrist vein is clearer. In the scheme selection, it is preferred to use two sets of infrared light-emitting diodes with wavelengths of 850 nm and capable of group control and continuously adjustable brightness as a light source of the vein image. In order to obtain better image quality, the infrared LED tube can be used. The head is cut into a plane and polished, and a diffuser is attached to the front of the first infrared source to obtain uniform discrete infrared light. The infrared imaging device adopts a thermal imaging camera to perform infrared scanning on the wrist of the user; the wrist position sensor is disposed on the working table, and when the authenticator enters the sensing area, the wrist vein characteristic information collecting device enters the working state. At the same time, the finger vein characteristic information collecting device also enters the working state. The infrared imaging light source is used for illumination of a wrist vein, and an infrared filter and an inverse infrared filter are arranged in front of the infrared imaging device for reflecting infrared light and transmitting visible red light; the computer processing system passes through the data transmission interface The feature amount with the wrist vein characteristic information extracted from the image output from the infrared imaging device is connected to the infrared imaging device, and the feature amount is also input to the data processing unit. In the authentication device using the finger vein recognition combined with the wrist vein recognition and the nail recognition, the feature value of the wrist vein feature information collection authenticator can be separately and the pre-acquired authenticator's wrist vein feature information. Performing an alignment, and transmitting the result of the comparison to the second controller; the second controller is connected to the feature information comparison portion, and the second controller controls the adoption of the invention according to the comparison result signal of the feature information comparison portion The authentication device that combines finger vein recognition with wrist vein recognition and nail recognition emits or displays the comparison result to implement the authentication process.

The nail feature information collecting device is connected to the collecting device of the finger vein feature information, wherein the nail feature information collecting device comprises a second platform, a third light source, a fourth light source, and a detecting component, wherein the third light source is disposed on the second platform, and the detecting component The movable unit is disposed on the second platform, and the fourth light source is disposed under the first platform, facing the detecting unit of the second platform. The third light source and the fourth light source employ a light source that emits a wavelength of absorption as a target of the measurement, such as a near-infrared light source.

The third light source is used to determine the position of the nail, and the area to be detected is determined by the measurement of the two third light sources, that is, the cortex of the contact transition region between the nail surface and the wrist cortex, when the incident wavelength of the fourth light source is at 1780 nm. At 1850 nm, the reflected wavelength information can be better received by the detecting element. In the above scheme selection, it is preferable to use an infrared light emitting diode with a wavelength of 810 nm and capable of group control and continuously adjustable brightness as a light source for measurement, and the fourth light source is disposed under the first platform, and the emitted light is emitted. The near-infrared light has a good penetration test effect at a wavelength of 1780-1850 nm. The near-infrared light passes through the fingertip and the nail and is detected by the detecting element, and the above-mentioned feature quantity is also input into the data processing unit. In the authentication device using the finger vein recognition combined with the wrist vein recognition and the nail recognition of the present invention, the feature value of the nail feature information collection authenticator can be separately compared with the nail feature information of the pre-acquired authenticator. And transmitting the result of the comparison to the second controller; the second controller is connected to the feature information comparison portion, and the second controller controls the finger vein recognition of the present invention according to the comparison result signal of the feature information comparison portion The authentication device combining the wrist vein recognition and the nail recognition emits or displays the comparison result to implement the authentication process and control the access control device.

By using the authentication method of the authentication device using the finger vein recognition combined with the wrist vein recognition and the nail recognition, the wrist vein characteristic information, the finger vein characteristic information and the nail feature are obtained through data processing of certain feature information. The feature information matching group can eliminate the problem that the prior art biometric verification may be inaccurate due to changes in age and physiology, and the method utilizes wrist vein, finger vein characteristic information and nails. The matching group of feature information is authenticated, which greatly improves the accuracy and reliability of identity authentication in the security field.

DRAWINGS

1 is a schematic view showing the structure of an authentication device using finger vein recognition combined with wrist vein recognition and nail recognition according to the present invention;

2 is a portion of a finger vein feature collection portion of an authentication device using finger vein recognition combined with wrist vein recognition and nail recognition according to the present invention; Schematic diagram of the structure.

3 is a schematic view showing the structure of a nail recognition portion of an authentication device using finger vein recognition combined with wrist vein recognition and nail recognition according to the present invention.

4 is a schematic view showing the structure of a wrist vein feature collecting portion of the authentication device using finger vein recognition combined with wrist vein recognition and nail recognition according to the present invention.

Fig. 5 is a view showing the position of a feature region collected by the nail recognition portion of the authentication device using the finger vein recognition combined with the wrist vein recognition and nail recognition of the present invention.

detailed description

The specific embodiments of the present invention, such as the shape and structure of the components involved, the mutual position and connection relationship between the parts, the functions and working principles of the parts, etc., are described below with reference to the accompanying drawings. The detailed description of the authentication method of the present invention will be described in detail.

1-4 is an authentication device 1 for detecting finger vein recognition and nail recognition, comprising a finger vein feature collection device 2, a nail feature information collection device 3, and a wrist vein feature information collection device. 4. The finger vein feature collection device 2, the nail feature information collection device 3, and the wrist vein feature information collection device 4 are arranged side by side on the table body 6, and the palm passes through the wrist vein feature information collecting device 4 and then extends into the finger. In the vein feature collection device 2, the nail feature information collection device 3, the wrist portion is placed on the placement seat in the wrist vein feature information collection device 4, and the finger is placed on the finger vein feature collection device 2, and the nail feature information collection device 3 The inner finger is placed on the seat, and the wrist vein characteristic information collecting device can be moved and adjusted on the table body. Further, in the table body 6 of the authentication device, a feature information storage unit, a data processing unit, a matching feature information comparison unit, and a controller are provided, and an input/output interface 5 is provided at a side portion of the table body 6.

The finger vein feature information collecting device 2 is disposed on the surface of the table body 6, and includes a housing 21, a first infrared imaging light source 22, a first infrared imaging device 23, a finger angle sensor 24, and a finger placement seat 25, wherein the housing is provided There is a power switch or a human body sensor. When the authenticator approaches the device, the authentication device automatically enters the power-on state, and the middle portion of the housing 21 is provided with a semi-circular hole for extending into the finger, and the finger placement seat 25 is disposed at In the semicircular hole, a plurality of rows of first infrared imaging light sources 22 are disposed at a position of the top of the semicircular hole in the middle of the finger placement seat, and the first infrared imaging light source 22 on the inner side wall of the semicircular hole respectively Two finger angle sensors 24 are provided, and the two finger angle sensors 24 on each side are arranged in such a manner that a finger angle sensor is disposed on both sides of the horizontal position flush with the placement surface of the finger placement seat 25, and placed with the finger The horizontal position of the seat is at a 45-degree angle, and one finger angle is provided on each side; the bottom of the housing 21 is provided with a characteristic information storage unit and a data processing unit in the table body 6 A transmission device in which the feature information is compared with the controller and the controller.

The wrist vein feature information collecting device 4 is disposed on the rear side of the finger vein feature collecting device 2 and the nail feature information collecting device 3, and is disposed on the surface of the table body 6. The wrist vein feature information collecting device 4 includes vein feature information collecting. The device housing 41, the first infrared imaging light source 42, the infrared imaging device 43, the wrist sensor 44, and the wrist placement seat 45, when the authenticator approaches the device, the authentication device automatically enters the power-on state according to the sensing of the wrist sensor 44. The middle portion of the housing 41 is provided with a semi-circular hole for extending into the wrist portion, and the wrist placement seat 45 is disposed in the semicircular hole, and the top portion of the semicircular hole is opposite to the wrist portion. A plurality of rows of first infrared imaging light sources 42 are disposed at a position; the bottom of the vein characteristic information collecting device housing 41 is provided with a characteristic information storage unit, a data processing unit, a matching feature information comparison unit, and a controller in the table body 6. Transmission device.

The nail feature information collecting device 3 is connected to the finger vein feature collecting device 2, wherein the nail feature information collecting device 3 includes a second platform 31, a third light source 32, a fourth light source 33, and a detecting element 34, wherein the third light source 32 is disposed at the On the second platform 31, the detecting element is movably disposed on the second platform 31, and the fourth light source 33 is disposed below the first platform 35, facing the detecting element 34 of the second stage 31. The fourth light source 33 employs a light source that emits a wavelength of absorption as a target of the measurement, such as a near-infrared light source.

The third light source 32 is used to determine the position of the nail, and the area to be detected is determined by the measurement of the two third light sources 32, that is, the skin layer 7 which is the contact transition area between the nail surface and the finger skin layer, wherein the nail feature information collecting device 3 collects The process of the nail characteristic information is that the third light source is used to determine the position of the nail, and the area to be detected is determined by the measurement of the two third light sources, that is, the skin layer 7 which is the contact transition region between the nail surface and the finger skin layer, and then The four light sources emit the measuring beam, and the near-infrared light emitted has a good penetration test effect at a wavelength of 1780-1850 nm. The fourth light source is disposed under the first platform, and the near-infrared light passes through the fingertip and the nail and is detected by the detecting element, and the feature quantity is also input into the data processing unit. In addition, the input/output interface 5 of the authentication device 1 of the present invention using finger vein recognition combined with wrist vein recognition and nail recognition can also be connected to the network to further cooperate with the remote primary server. Connection, data information transmission or authentication information verification, can be backed up regularly, and can be seamlessly connected with the WIS database.

The method for authenticating using the authentication device of the present invention using finger vein recognition combined with wrist vein recognition and nail recognition includes the following contents:

The first is the authenticator identity registration process, which initially registers the nail feature information, the finger vein feature information, and the wrist vein feature information of the specific person who needs to be authenticated, and the finger vein feature information collected during the registration process includes multiple angles of the finger. The information is rotated by the finger during registration, and the finger vein characteristic information of the plurality of angles is collected continuously, and the finger vein characteristic information containing the angle information is input to the feature information storage unit; the wrist vein characteristics acquired simultaneously during the registration process The information includes the wrist vein characteristic information collected when the front angle is determined by the wrist position sensor, and the wrist vein characteristic information is collected after the voice prompting device prompts the correct position, and the collected wrist vein characteristic information is input into the feature. The information storage unit further includes nail identification feature information collected by the nail feature information collecting device; and further includes nail identification feature information collected by the nail feature information collecting device, that is, a skin layer that collects a contact transition region between the nail surface and the finger skin layer. Information; above After the feature information is collected, the nail information, the finger vein feature information, and the wrist vein feature information collected and acquired in the feature information storage unit form real-time nail recognition feature information, finger vein feature information, and wrist in the data processing unit. The vein characteristic information matching group includes the finger vein characteristic information with angle information, the nail identification feature information collected at the same time, and the wrist vein characteristic information. The method for forming the matching group includes the shape, direction and nail of the finger vein. To identify the feature information, the shape of the wrist vein feature, etc., in order to improve the matching accuracy, the matching information is normalized by the following data normalization method before data fusion:

a’=(a-c)/σ

Where a is the matching score of the vein shape, the directional characteristic, and the nail shape feature, c and σ represent the mean and variance of the matching score a, and then the obtained normalized data a' is used as the input data of the fusion method.

The data normalization method is used to normalize the nail identification feature information, the finger vein feature information and the wrist vein feature information, and the nail identification feature information standard data, the finger vein feature information standard data and the wrist vein feature information standard data are obtained, and then The nail identification feature information standard data and the other two feature information standard data are formed into a feature information matching group by a weighted fusion method.

Followed by the authentication process, when the authenticator needs to perform the feature information authentication, the authentication device can be automatically turned on by opening the switch or by the human body sensor, and the finger extends into the semicircular hole of the housing, and the finger vein characteristic information The collecting device enters the finger vein characteristic information collecting process. At the same time, the nail characteristic information collecting device and the wrist vein characteristic information collecting device also enter the nail recognition feature information and the wrist vein feature information collecting process. First, the finger angle sensor is used to detect the placement information of the finger that protrudes into the semicircular hole housing, that is, the angle between the topmost portion of the nail curvature and the horizontal plane is detected by the four finger angle sensors, and the angle is determined by the angle. The placement angle information of the finger relative to the horizontal plane of the finger is placed, and at the same time, the camera of the nail recognition starts working, the first infrared imaging light source of the finger vein characteristic information collecting device and the second infrared imaging light source of the wrist vein characteristic information collecting device emit light, The first infrared imaging device of the finger vein feature information collecting device and the second infrared imaging device of the wrist vein feature information collecting device collect the obtained finger vein feature and wrist vein sign information and the nail feature collected by the nail feature information collecting device The information is input together to the feature information storage unit, wherein the feature information includes the shape, direction, and nail feature information of the finger vein, and the shape of the wrist vein feature; the feature information storage unit inputs the feature information to the data processing unit for fusion, first passing The following data mark Method for matching information standardized data:

a’=(a-c)/σ

Where a is the matching score of the vein shape, the directional characteristic, and the nail shape feature, c and σ represent the mean and variance of the matching score a, and then the obtained standardized data a' is used as the input data of the fusion method to obtain the nail identification characteristic information standard data. After the finger vein characteristic standard data and the wrist vein feature standard data, the three feature standard data are formed into a feature information matching group by weighted fusion method; then the above feature information matching group is input to the matching feature information comparison portion, and the matching feature is The information matching portion compares the feature information matching group currently authenticated by the authenticator with the feature information matching group at the time of identity registration, and the comparison includes the shape of the nail, the shape and direction of the finger vein, and the shape of the wrist vein feature. The feature information of the information matches the alignment of the group, for example, according to the feature information of the currently authenticated matching group, the matching feature information is searched for and matched according to the shape of the corresponding nail shape, the shape and direction of the finger vein, and the shape of the wrist vein feature. Comparison of pre-registered feature information matching groups with the closest features Identification is based on the results of the above comparison, to confirm the identity.

The process in which the nail feature information collecting device 3 collects the nail feature information is that the third light source is used to determine the position of the nail, and the area to be detected is determined by the measurement of the two third light sources, that is, the contact transition between the nail surface and the finger skin layer. The cortex 7 of the region is then emitted by the fourth light source to emit a measuring beam, which emits near-infrared light, and has a good penetration test effect at a wavelength of 1780-1850 nm. The fourth light source It is disposed under the first platform, and the near-infrared light passes through the fingertip and the nail and is detected by the detecting element, and the feature quantity is also input into the data processing unit.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and combinations thereof may be made without departing from the spirit and scope of the invention. Simplifications should all be equivalent replacements and are included in the scope of the present invention.

Claims

An authentication device combining finger vein recognition with wrist vein recognition and nail recognition, comprising: a finger vein feature information collecting device, a nail feature information collecting device, and a wrist vein feature information collecting device, wherein the three devices are juxtaposed The palm is placed on the table body, and the palm of the hand passes through the wrist vein characteristic information collecting device and extends into the finger vein characteristic information collecting device and the nail feature information collecting device, and the wrist is placed in the wrist vein characteristic information collecting device. On the seat, the finger is placed on the finger placement seat in the finger vein feature information collecting device and the nail feature information collecting device, and the wrist vein feature information collecting device can be adjusted on the table body; on the table of the authentication device The body is further provided with a feature information storage unit, a data processing unit, a matching feature information comparison unit, and a controller, and an input/output interface is provided at a side of the body, wherein the finger vein feature information collecting device and the nail feature information collecting device are provided. And wrist vein feature information collection devices are both protected with feature information The part connection, the feature information storage unit is connected to the data processing unit, the data processing unit is connected to the matching feature information comparison unit, and the input/output interface is connected with the matching feature information comparison unit; the finger vein feature information collection device includes finger vein feature information collection. a device housing, a first infrared imaging light source, a first infrared imaging device, a finger angle sensor, a finger placement seat, wherein the housing is provided with a power switch or a human body sensor, and when the authenticator approaches the device, the authentication device automatically enters In the power-on state, the middle portion of the housing is provided with a semi-circular hole for extending into the finger, and the finger placement seat is disposed in the semi-circular hole, and the top of the semi-circular hole is disposed at the position of the finger placement seat. There are multiple rows of first infrared imaging light sources, and two finger angle sensors are respectively disposed on each side of the first infrared imaging light source on the inner side wall of the semicircular hole, and the two finger angle sensors on each side are arranged. A finger angle sensor is provided on each side of the horizontal position flush with the finger placement seat, and is flush with the finger placement seat One finger angle sensing is provided on each side of the horizontal position at an angle of 45 degrees; the bottom of the housing is provided with a transmission device that is connected to the characteristic information storage unit, the data processing unit, the matching feature information comparison unit, and the controller in the internal body. The wrist vein characteristic information collecting device is disposed on the back side of the finger vein feature collecting device and the nail characteristic information collecting device, and includes a vein characteristic information collecting device housing, a second infrared imaging light source, an infrared imaging device, a wrist sensor, and a wrist The part is placed, when the authenticator approaches the device, the authentication device automatically enters the power-on state according to the sensing of the wrist sensor, and the middle portion of the wrist vein characteristic information collecting device housing is provided with a semicircle for extending into the wrist a shape hole, a wrist placement seat is disposed in the semicircular hole, and a plurality of rows of second infrared imaging light sources are disposed at a position in the middle of the semicircular hole in the middle of the top portion of the wrist; the nail feature information collecting device and the wrist portion The collection device of the vein characteristic information is connected, wherein the nail feature information collecting device comprises a second platform, a third light source, a fourth light source, and a detection The component, wherein the third light source is disposed on the second platform, the detecting component is movably disposed on the second platform, and the fourth light source is disposed under the first platform, opposite to the detecting component of the second platform; wherein the second infrared imaging The wavelength range of the light source is 850 nm, and the wavelength range of the third source and the fourth source is 1780-1850 nm.
The authentication device using finger vein recognition combined with wrist vein recognition and nail recognition according to claim 2, wherein the infrared imaging device is an infrared camera.
The authentication device using finger vein recognition combined with wrist vein recognition and nail recognition according to claim 3, wherein the third light source is a near-infrared light source.
The authentication device using the finger vein recognition and the wrist vein recognition and the nail recognition according to claim 4, wherein the infrared imaging device is provided with an infrared filter and an inverse infrared filter.
A method for authenticating using an authentication device using finger vein recognition combined with wrist vein recognition and nail recognition according to claim 1, comprising the following contents:

The first is the authenticator identity registration process, which initially registers the nail recognition feature information, the finger vein feature information, and the wrist vein feature information of the specific person who needs to be authenticated, and the finger vein feature information collected during the registration process includes multiple fingers. The angle information is rotated by the finger during registration, and the finger vein characteristic information of the plurality of angles is collected continuously, and the finger vein characteristic information containing the angle information is input to the feature information storage unit; the wrist vein collected simultaneously during the registration process The feature information includes the wrist vein characteristic information collected when the front angle is determined by the wrist position sensor, and the wrist vein characteristic information is collected after the voice prompting device prompts the correct position, and the collected wrist vein characteristic information is input to the a feature information storage unit; further comprising nail identification feature information collected by the nail feature information collecting device, that is, collecting skin layer information of a contact transition region between the nail surface and the finger skin layer; after the three kinds of feature information are collected, the feature information is collected. The preservation department will collect the acquired The A recognition feature information, the finger vein feature information, and the wrist vein feature information form real-time nail recognition feature information, finger vein feature information, and wrist vein feature information matching group in the data processing portion, and the matching group includes angle information. The finger vein characteristic information, the nail recognition feature information collected at the same time, and the wrist vein feature information, the method for forming a matching group includes the shape, direction, and nail identification feature information of the finger vein, and the shape of the wrist vein feature, in data fusion. Previously, the matching of these feature data was standardized by the following data normalization method:

a’=(a-c)/σ

Where a is the matching score of the vein shape, the directional characteristic, and the nail shape feature, c and σ represent the mean and variance of the matching score a, and then the obtained normalized data a' is used as the input data of the fusion method;

The data normalization method is used to normalize the nail identification feature information, the finger vein feature information and the wrist vein feature information, and the nail identification feature information standard data, the finger vein feature information standard data and the wrist vein feature information standard data are obtained, and then The nail identification feature information standard data and the other two feature information standard data are formed into a feature information matching group by a weighted fusion method;

Followed by the authentication process, when the authenticator needs to perform the feature information authentication, the authentication device can be automatically turned on by opening the switch or by the human body sensor, and the finger extends into the semicircular hole of the housing, and the finger vein characteristic information The collecting device enters the finger vein characteristic information collecting process, and at the same time, the nail characteristic information collecting device and the wrist vein characteristic information collecting device The setting process of the nail recognition feature information and the wrist vein feature information is also entered; firstly, the finger angle sensor is used to detect the placement information of the finger that protrudes into the semicircular hole housing, that is, through the four finger angle sensor To detect the angle of the top of the nail curvature and the horizontal plane, and determine the placement angle information of the finger relative to the horizontal plane of the finger placement seat, and at the same time, the camera of the nail recognition starts working, and the first infrared imaging light source of the finger vein characteristic information collecting device And the second infrared imaging light source of the wrist vein characteristic information collecting device emits light, and the first infrared imaging device of the finger vein characteristic information collecting device and the second infrared imaging device of the wrist vein characteristic information collecting device collect the collected finger vein characteristics And the wrist vein sign information and the nail identification feature information collected by the nail feature information collecting device are input to the feature information storage unit, wherein the feature information includes a shape, a direction, a nail feature information, and a shape of the wrist vein feature of the finger vein; Feature information storage department The feature information is input to the data processing unit for fusion, and the matching information is normalized by the data normalization method described above, and then the obtained standardized data a′ is used as input data of the fusion method to obtain nail identification feature information standard data. After the finger vein characteristic information standard data and the wrist vein feature information standard data, the three feature standard data are formed into a feature information matching group by a weighted fusion method; then the above feature information matching group is input to the matching feature information comparison portion, and the matching is performed. The feature information matching unit compares the feature information matching group currently authenticated by the authenticator with the feature information matching group at the time of identity registration, and the comparison includes the shape of the nail, the shape and direction of the finger vein, and the characteristics of the wrist vein. The feature information matching group of the shape information matches the group according to the currently authenticated feature information matching group according to the corresponding nail shape, the shape and direction of the finger vein, and the shape of the shape of the wrist vein feature. The most similar pre-registered features Group than matching information; identification is the result of the above comparison, it was confirmed identity.
The method for authenticating an authentication device using finger vein recognition combined with wrist vein recognition and nail recognition according to claim 5, wherein the nail feature information collecting device collects the nail identification feature information for the third light source Determine the position of the nail, determine the area to be detected by the measurement of the two third light sources, that is, the skin layer of the contact transition area between the nail surface and the finger skin layer, and then emit near-infrared light through the fourth light source, the fourth light source The utility model is disposed under the first platform, and the near-infrared light passes through the fingertip and the nail and is detected by the detecting component, and the nail identifying feature information is collected by the detecting component, and the feature information is also input into the data processing unit.