CN201345109Y - Fingerprint and hand-back vein-based identification authentication device - Google Patents
Fingerprint and hand-back vein-based identification authentication device Download PDFInfo
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- CN201345109Y CN201345109Y CNU2008202035715U CN200820203571U CN201345109Y CN 201345109 Y CN201345109 Y CN 201345109Y CN U2008202035715 U CNU2008202035715 U CN U2008202035715U CN 200820203571 U CN200820203571 U CN 200820203571U CN 201345109 Y CN201345109 Y CN 201345109Y
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Abstract
本实用新型提供一种基于手指指纹和手背静脉的身份认证装置，包括：握把部、指纹采集部、光源、摄像部、处理部、触动开关；所述处理部分别与指纹采集部、光源、摄像部和触动开关相连接。该装置一般处于待机状态，当使用者用手指抓握把手并触发触动开关时，系统开始工作：首先启动光源照射手背，利用摄像部获取手背静脉图像，与此同时，通过指纹采集部采集拇指指纹图像；然后分别对两幅图像进行预处理和特征提取，并与储存在数据库中的手背静脉特征和指纹特征进行匹配，最后通过评价它们的相似度得到认证是否成功的最终判断。本实用新型的装置充分利用了手部的两种不同生物特征，相对单一的认证方式而言，具有更高的准确率、防伪性和安全性。
The utility model provides an identity authentication device based on finger fingerprints and veins on the back of the hand, comprising: a grip part, a fingerprint collection part, a light source, a camera part, a processing part, and a touch switch; The camera part is connected with the touch switch. The device is generally in a standby state. When the user grasps the handle with his fingers and triggers the touch switch, the system starts to work: first, the light source is turned on to illuminate the back of the hand, and the image of the veins on the back of the hand is obtained by the camera unit. At the same time, the fingerprint of the thumb is collected by the fingerprint collection unit. Then, preprocessing and feature extraction are performed on the two images, and they are matched with the hand vein features and fingerprint features stored in the database. Finally, the final judgment of whether the authentication is successful is obtained by evaluating their similarity. The device of the utility model makes full use of two different biological characteristics of the hand, and has higher accuracy, anti-counterfeiting and safety compared with a single authentication method.
Description
Technical field
The utility model relates to technical field of biometric identification, particularly utilizes fingerprint and vein to carry out the technology of authentication.
Background technology
Along with computer technology, the develop rapidly of technology such as photoelectron technology, Digital Image Processing and pattern-recognition, a kind of brand-new human body biological characteristics authentication techniques have appearred, promptly utilize intrinsic biological characteristic of human body (as people's face, fingerprint, palmmprint, iris) or behavioural characteristic (as gait, signature, keystroke etc.), differentiate the technology of personal identification by the method for Flame Image Process and pattern match; This new technology and traditional based on IC-card or the identification authentication mode of password comparatively speaking, it have human body intrinsic not reproducible uniqueness and stability, transreplication, stolen or pass into silence not, thereby has better security, reliability and validity, be subjected to increasing attention in recent years, have broad application prospects.
In the various biological characteristics of human body, the development of fingerprint recognition is the most ripe, the theoretical uniqueness that has also proved fingerprint, remaining unchanged for a long period of time property, fingerprint recognition also has the discrimination height simultaneously, be subjected to extraneous factor to influence advantages such as little, thereby usually be used as an effective means of identification, but there is a problem in fingerprint recognition: because fingerprint is the outer field feature of human body, the technician can be to remaining in smooth object (as cup, glass etc.) Biao Mian fingerprint is forged, therefore there is certain potential safety hazard in the Verification System antifalsification deficiency that is made of single fingerprint characteristic.Another kind of biological characteristic---the veinprint of human body, also has the property of remaining unchanged for a long period of time, and compare with fingerprint or palmmprint, vein is positioned at below the epidermis, almost can not forge, when near infrared light is pointed, haemoglobin in the live body hand back vein can absorb near infrared light, making has the place of veinprint to present black on image, forms veinprint figure, therefore, vena identification also develops into the common method of authentication gradually, but the degree of ripeness and the accuracy rate of vein identification technology are lower than fingerprint recognition, and the uniqueness of veinprint does not also obtain proof.Therefore for avoiding the shortcoming of single creature feature identification, just require to develop Verification System, to guarantee the uniqueness and the accuracy rate of living things feature recognition with multi-biological characteristic identification.
The utility model content
The purpose of this utility model is to provide a kind of ergonomics that meets, bi-mode biology feature authenticate device in conjunction with fingerprint and hand back vein, by user's nature comfortable gripping and finger pressure, come triggering system to gather fingerprint and hand back vein image, on the basis of authentication accuracy rate that guarantees system and uniqueness, also can improve the security and the antifalsification of system.
For reaching above-mentioned purpose, the utility model adopts following technical scheme: a kind of identification authentication system based on finger print and hand back vein comprises:
Handle portion with the curvature that grips with hand;
Gather the fingerprint collecting portion of thumbprint;
Direct irradiation is held in the light source at the palm back of described handle portion;
Take the palm back that direct irradiation is held in described handle portion, from the image pickup part of above-mentioned light source, described image pickup part is arranged on the relative position at the palm back that is held in described handle portion, takes the palm back that is held in described handle portion;
Extract the handling part that vein pattern and fingerprint pattern authenticate image that starts described light source, fingerprint collecting portion and image pickup part and take from described image pickup part and the fingerprint collecting portion;
Start the touch switch of described handling part;
Described handling part is connected with fingerprint collecting portion, light source, image pickup part and touch switch respectively.
In order to realize the utility model better, described fingerprint collecting portion is arranged on the acupressure probe, adopts semicoductor capacitor formula fingerprint sensor, and described acupressure probe is arranged in the handle support sector that supports described handle portion.
Described touch switch is arranged on the junction of described acupressure probe and described handle support sector.Like this when the depress acupressure probe is gathered fingerprint, startup touch switch that can be comfortable naturally, thereby the work of startup authenticate device.
When being arranged at finger nature grasping handle portion except that thumb in the described handle portion, described fingerprint collecting portion on the position of thumb correspondence, adopts semicoductor capacitor formula fingerprint sensor.When user's four refers to grasping handle portion, thumb can cosily be placed in the fingerprint collecting portion naturally, thereby each thumb position and the fixed angle of putting, thereby the fingerprint image that makes fingerprint collecting portion collect does not have the skew of position and angle substantially, and then improve the utility model and carry out the accuracy that personnel authenticate, but also improved the integrated level of whole device.
Described touch switch is positioned at the contact position of the finger except that thumb and handle portion in the handle portion.Startup touch switch that can be comfortable naturally like this, thus authenticate device work started.
Described light source is along the circumferential setting of described image pickup part.Can make light source be radiated at the palm back that is held in handle portion fully like this.
Described light source is meant that wavelength is the near-infrared LED of 800～960nm.Medical research shows that wavelength has stronger penetration capacity at the light in the near infrared spectrum district of 700～1000nm to tissue, oxyhemoglobin in the blood of human body is relative higher with the absorptivity of reduced hemoglobin in the wavelength coverage of 800～960nm, and other parts in the tissue are relatively low in this wavelength coverage internal absorption factor, so under the irradiation of near-infrared light source, finger vena partly can be black because of light is had more absorption, other parts present white simultaneously, so just can obtain palm back vein image clearly.The employing wavelength is that the near-infrared LED of 880nm is a preferred version as light source.
Described image pickup part is meant the black and white digital camera of high s/n ratio.
Also be provided with filter on the relevant position between described image pickup part and the described palm back that is held in handle portion; Described filter is meant the near infrared filter plate, and it can the filtering parasitic light, only keeps near infrared light and enters image pickup part, thereby guarantee to refer to the sharpness of vein image.
The utility model has two kinds of working methods, is respectively identity registration working method and authentication working method.Before the authentication working method, need carry out identity registration, finish after the identity registration, general just only using always arrived the authentication working method, therefore, the utility model can an external keyboard or other external equipment, when carrying out identity registration, just allows to carry out identity registration by keyboard or other external equipment input password or by other verification mode.The user only need trigger touch switch and just can realize authentication afterwards, takes this mode to facilitate for the user to the full extent.
The utility model is to use like this:
1, carry out identity registration: import password or pass through other verification mode by keyboard or other external equipment, be allowed to carry out identity registration, point nature grasping handle portions with four this moment, thumb is aimed at fingerprint collecting portion, start touch switch, this moment, handling part was started working, thumbprint is gathered by handling part control fingerprint collecting portion, meanwhile, and handling part point bright light source, irradiation the back of the hand also reflects, leach the light of other wavelength by filter, send into image pickup part, obtain palm back vein image, handling part carries out pre-service and feature extraction to fingerprint image and the hand back vein image that collects respectively subsequently, obtains fingerprint characteristic and hand back vein feature.The fingerprint characteristic and the hand back vein feature composition fingerprint-hand back vein feature that obtain is right, and keep in.The triplicate said process, it is right just to form 3 groups of fingerprints-hand back vein feature, to 3 groups of fingerprints-hand back vein feature of obtaining to calculating the difference value D between them, if difference value D is greater than predetermined threshold value, then the fingerprint and the hand back vein image general effect of expression collection this time are not good, should not deposit registration database in as log-on data, so the registration process failure, the user can select to gather again or withdraw from registration; If difference value D is greater than predetermined threshold value, 3 groups of fingerprints-hand back vein feature of obtaining is this time gathered and handled to expression to effectively, can be used as log-on data and deposit registration database in, therefore after calculating their mean value, and deposit this stack features in registration database, succeed in registration this moment, and the user can withdraw from or the renewal of registration as required.
2, carry out authentication: with four finger nature grasping handle portions, thumb is aimed at fingerprint collecting portion, start touch switch, then thumbprint is gathered by handling part control fingerprint collecting portion, meanwhile, handling part point bright light source, irradiation the back of the hand also reflects, leach the light of other wavelength by filter, send into image pickup part, obtain nearly hand back vein image, handling part carries out pre-service and feature extraction to fingerprint image and the hand back vein image that collects respectively subsequently, obtains fingerprint characteristic and hand back vein feature.Fingerprint characteristic and the hand back vein feature registered in the fingerprint characteristic that newly obtains and hand back vein feature and the database are mated respectively: the first group of fingerprint-hand back vein feature that is about to register in fingerprint characteristic and hand back vein feature and the database is to carrying out similarity calculating respectively, and to the two weighting summation, if should be worth greater than predetermined threshold value, then the match is successful, otherwise, with other one group of fingerprint-hand back vein feature of registering in the database to mating, up to organizing fingerprint-hand back vein feature to mating with last, if the match is successful, then authentication is passed through, otherwise the authentication failure.
With respect to prior art, the utlity model has following major advantage and effect:
1, identification authentication system based on finger print and hand back vein of the present utility model has made full use of two different biological features of hands, relative single fingerprint authentication mode, vena identification itself in the bimodal authentication contains the living body determination effect, therefore the antifalsification and the security that can improve Verification System, simultaneously single relatively vena identification mode, because the degree of ripeness and the accuracy rate of vein identification technology are lower than fingerprint recognition, and the uniqueness of veinprint does not also obtain proof, therefore adopt the authentication of fingerprint and hand back vein bimodal can guarantee the uniqueness of identity authorization system, and can effectively improve the accuracy of identity authorization system.
2, the identification authentication system based on finger print and hand back vein of the present utility model, comply with the grip that people use always, on the position that thumb was relative with the palm back when collecting part of fingerprint image and hand back vein image was not arranged on five finger nature grasping handles, in the time of user's nature grasping handle, get final product images acquired, make one-handed performance to finish, therefore be easier to be accepted as identity authorization system; And during fingerprint collecting, thumb can cosily be placed in the fingerprint collecting portion naturally, thereby each thumb position and the fixed angle of putting, thereby the fingerprint image that makes fingerprint collecting portion collect does not have the skew of position and angle substantially, and then improves the utility model and carry out the accuracy that personnel authenticate based on finger print and the identification authentication system that refers to vein.
3, the identification authentication system based on finger print and hand back vein of the present utility model generally all is in holding state, has only when starting touch switch, and system just starts working, and start-up system is more convenient in this way, laborsaving and power saving.
Adopt semicoductor capacitor formula fingerprint sensor when 4, the identification authentication system based on finger print and hand back vein of the present utility model is gathered fingerprint image, shine the back of the hand by near-infrared LED when gathering the hand back vein image, and via all the other wavelength light of near infrared filter plate filtering, therefore can not be subjected to the influence of illumination, can under the high light and the low light level, work, make the strong and good stability of antijamming capability of system.
Description of drawings
Fig. 1 a is the left view based on the identification authentication system of finger print and hand back vein that embodiment 1 adopts; Fig. 1 b is the front view that embodiment 1 adopts device; Fig. 1 c is the vertical view that embodiment 1 adopts device;
Fig. 2 a is the use scheme of installation of Fig. 1 a shown device; Fig. 2 b is the user mode figure of Fig. 2 a shown device;
Fig. 3 a is the left view based on the identification authentication system of finger print and hand back vein that embodiment 2 adopts; Fig. 3 b is the front view that embodiment 2 adopts device; Fig. 3 c is the vertical view that embodiment 2 adopts device;
Fig. 4 a is the left view based on the identification authentication system of finger print and hand back vein that embodiment 3 adopts; Fig. 4 b is the front view that embodiment 3 adopts device; Fig. 4 c is the vertical view that embodiment 3 adopts device;
Fig. 5 is the utility model carries out identity registration based on the identification authentication system of finger print and hand back vein realization flow figure;
Fig. 6 is the utility model carries out authentication based on the identification authentication system of finger print and hand back vein realization flow figure.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Shown in Fig. 1 a～Fig. 1 c, wherein Fig. 1 a is the left view of this device based on the structure of the identification authentication system of finger print and hand back vein; Fig. 1 b is the front view of this device; Fig. 1 c is the vertical view of this device; Comprise handle support sector 1 among Fig. 1 a～Fig. 1 c, image pickup part 2, handling part 3, touch switch 4, acupressure probe 5, fingerprint collecting portion 6, handle portion 7, light source 8, filter 9, handling part 3 connect image pickup part 2, touch switch 4, fingerprint collecting portion 6 and light source 8 respectively.
Handling part 3 is governor circuits, it is installed in the handle support sector 1, it is connected with light source 8, image pickup part 2, fingerprint collecting portion 6 and touch switch 4 respectively, control parts such as image pickup part 2, light source 8, fingerprint collecting portion 6 by it, to realize the collection of hand back vein and fingerprint image, pre-service and feature extraction, coupling and authentication.
Device of the present utility model has two kinds of working methods, is respectively identity registration working method and authentication working method.It is to use like this:
1, carry out identity registration: import password or pass through other verification mode by keyboard or other external equipment, be allowed to carry out identity registration, point nature grasping handle portion 7 with four on the right hand this moment, thumb is aimed at the fingerprint collecting portion 6 on the acupressure probe 5, depress, start touch switch 4, this moment, handling part 3 was started working, thumbprint is gathered by handling part 3 control fingerprint collecting portions 6, meanwhile, 3 bright light source 8 of handling part, irradiation the back of the hand also reflects, and leaches the light of other wavelength by filter 9, send into image pickup part 2, obtain palm back vein image, handling part 3 carries out pre-service and feature extraction to fingerprint image and the hand back vein image that collects respectively subsequently, obtains fingerprint characteristic and hand back vein feature.The fingerprint characteristic and the hand back vein feature composition fingerprint-hand back vein feature that obtain is right, and keep in.The triplicate said process, it is right just to form 3 groups of fingerprints-hand back vein feature, to 3 groups of fingerprints-hand back vein feature of obtaining to calculating the difference value D between them, if difference value D is greater than predetermined threshold value, then the fingerprint and the hand back vein image general effect of expression collection this time are not good, should not deposit registration database in as log-on data, so the registration process failure, the user can select to gather again or withdraw from registration; If difference value D is greater than predetermined threshold value, 3 groups of fingerprints-hand back vein feature of obtaining is this time gathered and handled to expression to effectively, can be used as log-on data and deposit registration database in, therefore after calculating their mean value, and deposit this stack features in registration database, succeed in registration this moment, and the user can withdraw from or the renewal of registration as required, and it realizes process flow diagram as shown in Figure 5.
2, carry out authentication: with four fingers of right hand nature grasping handle portion 7, thumb is aimed at the fingerprint collecting portion 6 on the acupressure probe 5, depress, start touch switch 4, then thumbprint is gathered by handling part 3 control fingerprint collecting portions 6, meanwhile, 3 bright light source of handling part, irradiation the back of the hand also reflects, leach the light of other wavelength by filter 9, send into image pickup part 2, obtain nearly hand back vein image, handling part 3 carries out pre-service and feature extraction to fingerprint image and the hand back vein image that collects respectively subsequently, obtains fingerprint characteristic and hand back vein feature.Fingerprint characteristic and the hand back vein feature registered in the fingerprint characteristic that newly obtains and hand back vein feature and the database are mated respectively: the first group of fingerprint-hand back vein feature that is about to register in fingerprint characteristic and hand back vein feature and the database is to carrying out similarity calculating respectively, and to the two weighting summation, if should be worth greater than predetermined threshold value, then the match is successful, otherwise, with other one group of fingerprint-hand back vein feature of registering in the database to mating, up to organizing fingerprint-hand back vein feature to mating with last, if the match is successful, then authentication is passed through, otherwise the authentication failure, it realizes process flow diagram as shown in Figure 6.
Shown in Fig. 3 a～Fig. 3 c, wherein Fig. 3 a is the left view of this device based on the structure of the identification authentication system of finger print and hand back vein; Fig. 3 b is the front view of this device; Fig. 3 c is the vertical view of this device; Comprise handle support sector 1 among Fig. 3 a～Fig. 3 c, image pickup part 2, handling part 3, touch switch 4, acupressure probe 5, fingerprint collecting portion 6, handle portion 7, light source 8, filter 9, handling part 3 connect image pickup part 2, touch switch 4, fingerprint collecting portion 6 and light source 8 respectively.
Handling part 3 is governor circuits, it is installed in the handle support sector 1, it is connected with light source 8, image pickup part 2, fingerprint collecting portion 6 and touch switch 4 respectively, control parts such as image pickup part 2, light source 8, fingerprint collecting portion 6 by it, and the collection of realization hand back vein and fingerprint image, pre-service and feature extraction, coupling and authentication.
It is the near-infrared LED of 800～960nm that light source 8 adopts wavelength coverage; the employing wavelength is that the near-infrared LED of 880nm is a preferred version; its be installed in image pickup part 2 around; be circumferential arrangement; totally 8; present embodiment is settled fast all mating plates before light source, can play the effect of uniform light and protection light source.
Device of the present utility model has two kinds of working methods, is respectively identity registration working method and authentication working method.It is to use like this:
1, carry out identity registration: import password or pass through other verification mode by keyboard or other external equipment, be allowed to carry out identity registration, point nature grasping handle portion 7 with four on the right hand this moment, thumb is aimed at fingerprint collecting portion 6, press startup touch switch 4 with light finger, this moment, handling part 3 was started working, thumbprint is gathered by handling part 3 control fingerprint collecting portions 6, meanwhile, 3 bright light source 8 of handling part, irradiation the back of the hand also reflects, leach the light of other wavelength by filter 9, send into image pickup part 2, obtain palm back vein image, handling part 3 carries out pre-service and feature extraction to fingerprint image and the hand back vein image that collects respectively subsequently, obtains fingerprint characteristic and hand back vein feature.The fingerprint characteristic and the hand back vein feature composition fingerprint-hand back vein feature that obtain is right, and keep in.The triplicate said process, it is right just to form 3 groups of fingerprints-hand back vein feature, to 3 groups of fingerprints-hand back vein feature of obtaining to calculating the difference value D between them, if difference value D is greater than predetermined threshold value, then the fingerprint and the hand back vein image general effect of expression collection this time are not good, should not deposit registration database in as log-on data, so the registration process failure, the user can select to gather again or withdraw from registration; If difference value D is greater than predetermined threshold value, 3 groups of fingerprints-hand back vein feature of obtaining is this time gathered and handled to expression to effectively, can be used as log-on data and deposit registration database in, therefore after calculating their mean value, and deposit this stack features in registration database, succeed in registration this moment, and the user can withdraw from or the renewal of registration as required, and it realizes process flow diagram as shown in Figure 5.
2, carry out authentication: with four fingers of right hand nature grasping handle portion 7, thumb is aimed at fingerprint collecting portion 6, press startup touch switch 4 with light finger, then thumbprint is gathered by handling part 3 control fingerprint collecting portions 6, meanwhile, 3 bright light source of handling part, irradiation the back of the hand also reflects, leach the light of other wavelength by filter 9, send into image pickup part 2, obtain nearly hand back vein image, handling part 3 carries out pre-service and feature extraction to fingerprint image and the hand back vein image that collects respectively subsequently, obtains fingerprint characteristic and hand back vein feature.Fingerprint characteristic and the hand back vein feature registered in the fingerprint characteristic that newly obtains and hand back vein feature and the database are mated respectively: the first group of fingerprint-hand back vein feature that is about to register in fingerprint characteristic and hand back vein feature and the database is to carrying out similarity calculating respectively, and to the two weighting summation, if should be worth greater than predetermined threshold value, then the match is successful, otherwise, with other one group of fingerprint-hand back vein feature of registering in the database to mating, up to organizing fingerprint-hand back vein feature to mating with last, if the match is successful, then authentication is passed through, otherwise the authentication failure, it realizes process flow diagram as shown in Figure 6.
Shown in Fig. 4 a～Fig. 4 c, wherein Fig. 4 a is the left view of this device based on the structure of the identification authentication system of finger print and hand back vein; Fig. 4 b is the front view of this device; Fig. 4 c is the vertical view of this device; Comprise handle support sector 1 among Fig. 4 a～Fig. 4 c, image pickup part 2, handling part 3, touch switch 4, fingerprint collecting portion 6, handle portion 7, light source 8, filter 9, handling part 3 connect image pickup part 2, touch switch 4, fingerprint collecting portion 6 and light source 8 respectively.
Handle support sector 1 is used for installing handling part 3, and is used for fixing image pickup part 2 and handle portion 7.
Handling part 3 is governor circuits, it is installed in the handle support sector 1, it is connected with light source 8, image pickup part 2, fingerprint collecting portion 6 and touch switch 4 respectively, control parts such as image pickup part 2, light source 8, fingerprint collecting portion 6 by it, and the collection of realization hand back vein and fingerprint image, pre-service and feature extraction, coupling and authentication.
The finger in the touch switch 4 installation handle portions 7 except that thumb and the contact position of handle portion, it is connected with handling part 3, when described light finger is pressed, starts handling part 3 by it.
When fingerprint collecting portion 6 is arranged at finger nature grasping handle portion 7 except that thumb in the handle portion 7 on the position of thumb correspondence, in order to gather fingerprint image.
It is the near-infrared LED of 800～960nm that light source 8 adopts wavelength coverages, and adopting wavelength is that the near-infrared LED of 880nm is a preferred version, its be installed in image pickup part 2 around; be circumferential arrangement; totally 8, before light source, settle fast all mating plates, can play the effect of uniform light and protection light source.
Device of the present utility model has two kinds of working methods, is respectively identity registration working method and authentication working method.It is to use like this:
1, carry out identity registration: import password or pass through other verification mode by keyboard or other external equipment, be allowed to carry out identity registration, point nature grasping handle portion 7 with four on the right hand this moment, thumb is aimed at fingerprint collecting portion 6, light finger is pressed and is started touch switch 4, this moment, handling part 3 was started working, thumbprint is gathered by handling part 3 control fingerprint collecting portions 6, meanwhile, 3 bright light source 8 of handling part, irradiation the back of the hand also reflects, leach the light of other wavelength by filter 9, send into image pickup part 2, obtain palm back vein image, handling part 3 carries out pre-service and feature extraction to fingerprint image and the hand back vein image that collects respectively subsequently, obtains fingerprint characteristic and hand back vein feature.The fingerprint characteristic and the hand back vein feature composition fingerprint-hand back vein feature that obtain is right, and keep in.The triplicate said process, it is right just to form 3 groups of fingerprints-hand back vein feature, to 3 groups of fingerprints-hand back vein feature of obtaining to calculating the difference value D between them, if difference value D is greater than predetermined threshold value, then the fingerprint and the hand back vein image general effect of expression collection this time are not good, should not deposit registration database in as log-on data, so the registration process failure, the user can select to gather again or withdraw from registration; If difference value D is greater than predetermined threshold value, 3 groups of fingerprints-hand back vein feature of obtaining is this time gathered and handled to expression to effectively, can be used as log-on data and deposit registration database in, therefore after calculating their mean value, and deposit this stack features in registration database, succeed in registration this moment, and the user can withdraw from or the renewal of registration as required, and it realizes process flow diagram as shown in Figure 5.
2, carry out authentication: with four fingers of right hand nature grasping handle portion 7, thumb is aimed at fingerprint collecting portion 6, light finger is pressed and is started touch switch 4, then thumbprint is gathered by handling part 3 control fingerprint collecting portions 6, meanwhile, 3 bright light source of handling part, irradiation the back of the hand also reflects, leach the light of other wavelength by filter 9, send into image pickup part 2, obtain nearly hand back vein image, handling part 3 carries out pre-service and feature extraction to fingerprint image and the hand back vein image that collects respectively subsequently, obtains fingerprint characteristic and hand back vein feature.Fingerprint characteristic and the hand back vein feature registered in the fingerprint characteristic that newly obtains and hand back vein feature and the database are mated respectively: the first group of fingerprint-hand back vein feature that is about to register in fingerprint characteristic and hand back vein feature and the database is to carrying out similarity calculating respectively, and to the two weighting summation, if should be worth greater than predetermined threshold value, then the match is successful, otherwise, with other one group of fingerprint-hand back vein feature of registering in the database to mating, up to organizing fingerprint-hand back vein feature to mating with last, if the match is successful, then authentication is passed through, otherwise the authentication failure, it realizes process flow diagram as shown in Figure 6.
All adopting the right hand in the foregoing description is that example describes, and device of the present utility model only needs image pickup part 2 is installed in the left side of handle portion 7, just can realize registration and authentication at left hand, and is very convenient.Device of the present utility model can also be distinguished left rotation and right rotation 90 degree on the installation site of the foregoing description, to adapt to different installation environments.
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202035715U CN201345109Y (en) | 2008-11-18 | 2008-11-18 | Fingerprint and hand-back vein-based identification authentication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202035715U CN201345109Y (en) | 2008-11-18 | 2008-11-18 | Fingerprint and hand-back vein-based identification authentication device |
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| CN201345109Y true CN201345109Y (en) | 2009-11-11 |
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| CNU2008202035715U Expired - Lifetime CN201345109Y (en) | 2008-11-18 | 2008-11-18 | Fingerprint and hand-back vein-based identification authentication device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208024A (en) * | 2010-03-31 | 2011-10-05 | 日立视听媒体股份有限公司 | Biometeric authentication apparatus |
| CN105550629A (en) * | 2015-08-03 | 2016-05-04 | 宇龙计算机通信科技(深圳)有限公司 | Identity identification method and apparatus |
-
2008
- 2008-11-18 CN CNU2008202035715U patent/CN201345109Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208024A (en) * | 2010-03-31 | 2011-10-05 | 日立视听媒体股份有限公司 | Biometeric authentication apparatus |
| CN105550629A (en) * | 2015-08-03 | 2016-05-04 | 宇龙计算机通信科技(深圳)有限公司 | Identity identification method and apparatus |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20091111 Effective date of abandoning: 20081118 |