CN109190603A - A kind of contactless palmmprint vena metacarpea mixing identifying system - Google Patents
A kind of contactless palmmprint vena metacarpea mixing identifying system Download PDFInfo
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- CN109190603A CN109190603A CN201811256381.4A CN201811256381A CN109190603A CN 109190603 A CN109190603 A CN 109190603A CN 201811256381 A CN201811256381 A CN 201811256381A CN 109190603 A CN109190603 A CN 109190603A
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- 238000002156 mixing Methods 0.000 title description 4
- 238000012545 processing Methods 0.000 claims abstract description 43
- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000003384 imaging method Methods 0.000 claims description 43
- 239000002245 particle Substances 0.000 claims description 28
- 238000004020 luminiscence type Methods 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
- 210000003462 vein Anatomy 0.000 claims description 14
- 241001025261 Neoraja caerulea Species 0.000 claims description 8
- 238000003709 image segmentation Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 3
- 210000001367 artery Anatomy 0.000 claims description 2
- 230000036541 health Effects 0.000 abstract description 3
- 241001133760 Acoelorraphe Species 0.000 description 39
- 238000005516 engineering process Methods 0.000 description 14
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- 238000000034 method Methods 0.000 description 4
- 238000013441 quality evaluation Methods 0.000 description 4
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- 238000007920 subcutaneous administration Methods 0.000 description 3
- 208000033748 Device issues Diseases 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
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- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/70—Multimodal biometrics, e.g. combining information from different biometric modalities
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Abstract
The invention discloses a kind of contactless palmmprint vena metacarpeas to mix identifying system, including guiding device, image collection assembly, light source assembly, light source control device, data transmission device, data processing equipment, source current duty cycle control arrangement, light source assembly emits beam and penetrates guiding device, light source control device is connect with light source assembly, data transmission device and image collection assembly, data processing equipment connection, light source assembly includes visible light source device, near infrared light source apparatus, source current duty cycle control arrangement is connect near infrared light source apparatus, data processing equipment is connect with source current duty cycle control arrangement, image collection assembly includes visible optical mode group, near-infrared mould group, visible light source device and visible optical mode assemble conjunction acquisition palmprint image, near infrared light source apparatus and near-infrared mould group cooperation acquisition vena metacarpea Image.The present invention realizes the combination identification of palmmprint, vena metacarpea, improves accuracy of identification and health.
Description
Technical field
The present invention relates to a kind of identifying systems more particularly to a kind of contactless palmmprint vena metacarpea to mix identifying system.
Background technique
Biometrics identification technology is identified using biological inherent feature to personal identification in computer science, into
The subject of row access registrar and control, such as: fingerprint, palmmprint, iris, face, vocal print, signature, gait etc..Individual character as people
Change characterization to identify a kind of technology of personal part, the identity such as human body biological characteristics and traditional key, password and access card characterization
It compares, has many advantages, such as to be not easy to forget, forge, therefore, human body biological characteristics identification technology and its derivative product have obtained fast
The development of speed, produces the application demand of magnanimity, possesses vast market prospect.
The biometrics identification technology of mainstream respectively has advantage and disadvantage at present: recognition of face be daily carry out identification and
One kind of certification commonly uses passive authentication techniques, and due to being influenced by environment, illumination and dressing, expression etc., accuracy of identification is not high,
Safety is lower.Fingerprint recognition is the biometrics identification technology of early start research, and currently engineering technology is more mature
A kind of scheme cause the development of fingerprint identification technology to be restricted but due to accuracy of identification is low, is easy to be stolen, forge.
Application on Voiceprint Recognition is easy to be influenced by ambient noise, and the risk being stolen is very high, and there are higher security risks, are unfavorable for
It is used in fairly large application scenarios.Iris recognition technology precision is higher, but user uses and is easy to produce the conflict heart
Reason, and the crowds different with height of wearing spectacles, using adaptation and inconvenience, last high equipment price also limits skill
The actual use of art.
Palmmprint and palm vein recognition technical are to be utilized respectively palm surface complexity streakline, textural characteristics and combine venae subcutaneae
The novel biometrics identification technology of one kind that feature carries out.Since this technology acquires hand information content, the flexibility of arm
So that the acceptance that user uses is good.On accuracy of identification, the palmmprint and vein pattern of hand are more hidden, are not easy to steal and pseudo-
It makes, and information content is more abundant, this technology is enabled to reach higher safety on the basis of guaranteeing good ease for use.
The existing technology for carrying out living things feature recognition certification using palm can substantially be divided into following two categories:
1. palm print characteristics: human body palm print characteristics, which have the characteristics that contain much information, compares palm print information area with fingerprint with steady in a long-term
Domain is richer, and information content is bigger, therefore has higher identification precision.However, current palmprint recognition technology still has
Some disadvantages: it although (1) palm print information is abundant, is not easy to carry out palm positioning and characteristic matching.Usually require contact side
Case is by, to complete acquisition, but the mode of this contact is easy to bring health side on the palm contacts to acquisition device of user
The hidden danger in face should not be promoted in public places.In addition contactless scheme then needs to handle determining for palm under complex scene
The difficulty of position and matching problem, Project Realization increases.(2) although palm print characteristics contain much information, compared to schemes such as fingerprint and faces
With better feature concealment, but since it still falls within phenotypic characteristic scope, thus there are still directly being stolen and
The risk of duplication.
2. vena metacarpea feature: palm vein identification is the Infrared irradiation palm using specific wavelength, utilizes infrared light pair
The absorption difference of the subcutaneous thicker vein of palm draws vein in subcutaneous distribution pattern, thus carry out biological characteristic identification and
Certification.The feature of palm vein equally has the advantages that steady in a long-term and not easy to wear and destroys, additionally due to its feature is hidden
It subcutaneous, is difficult to be stolen and replicate under visible light, can preferably protect the safety of biological characteristic mode, therefore can be with
Effective identification and the certification work that high security is carried out using this feature.But, because palm arteries and veins belongs to relatively thick blood
The texture of pipe distribution pattern, venae subcutaneae blood vessel is also simple with respect to palmmprint, infrared light reflection obtain vein picture also usually compared with
Be it is fuzzy, characteristic information amount is not abundant enough, therefore, is not carried out individually recognizing in high precision in current many technical solutions
Card.
In short, remain unchanged to palm identification technology has the following deficiencies: the authentication of single vena metacarpea information in the prior art
In system, characteristic information amount is less and identification precision is not high.Secondly, authentication individually is carried out using palmmprint system, due to
Palmmprint belongs to phenotypic characteristic, and for phenotypic characteristic, the anti-counterfeit capability of system is necessarily affected, and in the identification process of palmmprint,
It is current it is most of picture is still obtained using contact mode, in public places using still remaining hygienic issues.
Summary of the invention
The present invention is not high for identification precision existing in the prior art, anti-counterfeit capability is poor and lacked using not enough health etc.
It falls into, provides a kind of new contactless palmmprint vena metacarpea mixing identifying system.
In order to solve the above-mentioned technical problem, the invention is realized by the following technical scheme:
A kind of contactless palmmprint vena metacarpea mixes identifying system, including pedestal, further include guiding device, image collection assembly,
Light source assembly, light source control device, data transmission device, data processing equipment, source current duty cycle control arrangement, the figure
As acquisition component, light source assembly are set on the pedestal, the guiding device is located above described image acquisition component, described
Light source assembly emits beam and penetrates the guiding device, and the light source control device is connected and controls with the light source assembly
The unlatching and closure of the light source assembly, the data transmission device are connected with described image acquisition component, data processing equipment
Connect, the light source assembly includes visible light source device, near infrared light source apparatus, the source current duty cycle control arrangement with
The near infrared light source apparatus is connected, and the data processing equipment is connected simultaneously with the source current duty cycle control arrangement
The source current duty cycle control arrangement is controlled the light intensity proportion of the near infrared light source apparatus is adjusted, it is described
Image collection assembly includes visible optical mode group, near-infrared mould group, and the visible light source device and the visible optical mode group match
Acquisition palmprint image is closed, the near infrared light source apparatus matches acquisition vena metacarpea image with the near-infrared mould group.
Pedestal is used to the light that light source assembly issues concentrating on palm portion for providing placement space, guiding device,
Guarantee that palm obtains enough illumination, image collection assembly is for acquiring palmmprint and vena metacarpea image, wherein visible optical mode group is used
In acquisition palmprint image, near-infrared mould group impinges upon palm for emitting beam for acquiring vena metacarpea image, light source assembly,
Middle visible light source device matches acquisition palmprint image, near infrared light source apparatus and the near-infrared mould group with visible optical mode group
Acquisition vena metacarpea image is matched, light source control device is used to control the unlatching and closure of light source assembly, opens when palm is close
Light source assembly is opened, light source assembly is closed when palm leaves, under the premise of saving energy consumption, improves light source assembly and Image Acquisition
The service life of component, data transmission device are used for the collected palmmprint of image collection assembly and vena metacarpea image transmitting to counting
According in processing unit, data processing equipment is first is that for estimating whether collected palmmprint and vena metacarpea image meet subsequent processing
Condition, second is that under the conditions of palmmprint and vena metacarpea image meet subsequent processing, to collected palmmprint and vena metacarpea image
Aspect ratio pair is carried out, source current duty cycle control arrangement is used to cooperate with data processing equipment, be unsatisfactory in vena metacarpea image
Under the conditions of subsequent processing, the light intensity of regulating near-infrared light supply apparatus is matched, and matches with image collecting device to obtain
Higher-quality vena metacarpea image.
Preferably, a kind of contactless palmmprint vena metacarpea described above mixes identifying system, the visible optical mode group
Including visible images imaging lens, visible light band pass filter, palmprint image sensor, the near-infrared mould group includes close red
Outer image imaging lens, near-infrared band pass filter, vena metacarpea imaging sensor, it is the visible images imaging lens, close red
In on the pedestal, the palmprint image sensor, vena metacarpea imaging sensor are set to outer image imaging lens vertical array
On the pedestal, the visible light band pass filter connects the visible images imaging lens and palmprint image sensor, institute
It states near-infrared band pass filter and connects the near-infrared image imaging lens and vena metacarpea imaging sensor, the palmprint image passes
Sensor, vena metacarpea imaging sensor are connected with the data transmission device.
Visible images imaging lens are used to focus the visible light ray returned by palmar, it is seen that light band pass filter is used
In the visible light ray for filtering the focusing of visible images imaging lens and it will be seen that light light projects on palmprint image sensor,
Palmprint image sensor imports data transmission device, near-infrared image for realizing the acquisition to palmprint image and by palmprint image
Imaging lens be used for focuses by palmar return near infrared light, near-infrared band pass filter be used for filter near-infrared image at
As lens focus near infrared light and near infrared light is projected on vena metacarpea imaging sensor, vena metacarpea imaging sensor
Data transmission device is imported for realizing the acquisition to vena metacarpea image and by vena metacarpea image.
Preferably, a kind of contactless palmmprint vena metacarpea described above mixes identifying system, the visible light source
Device includes blue-ray LED particle, and the near infrared light source apparatus includes the different infrared LED particle of at least three wavelength,
The wavelength of the infrared LED particle is 760nm-940nm, and the blue-ray LED particle and the infrared LED particle form the list that shines
Tuple, the luminescence unit group are set to the visible optical mode group, by near-infrared mould group, the source current duty ratio control dress
Set the intensity proportion adjusted between the infrared LED particle.
Blue-ray LED particle is used to issue the visible light ray of blue, and palmprint image sensor is effectively distinguished
The vena metacarpea image of near infrared light line drawing guarantees the accuracy of the palmprint image obtained, while blue-ray LED particle is also used to obtain
Take palm area, infrared LED particle obtains vena metacarpea image for issuing near infrared light, infrared LED particle be set as to
Few three and the different effect of wavelength are to be realized by adjusting the light intensity proportion of each infrared LED particle to different crowd palm
The acquisition of vein image under skin thickness, and guarantee the clarity of vein image.
Preferably, a kind of contactless palmmprint vena metacarpea described above mixes identifying system, the luminescence unit group
Quantity be at least 3, the luminescence unit group annular array is around the visible optical mode group, near-infrared mould group.
The quantity of luminescence unit group is set as 3 and annular array around visible optical mode group, near-infrared mould group, can
Guarantee the uniformity of light intensity and illumination.
Preferably, a kind of contactless palmmprint vena metacarpea described above mixes identifying system, it further include image channel
Switch controller, described image channel switch controller are connected with the palmprint image sensor, vena metacarpea imaging sensor
And switch the palmprint image sensor and vena metacarpea imaging sensor.
For image channel controller for switching palmprint image sensor and vena metacarpea imaging sensor, the guarantee present invention can be
Palmprint image and vena metacarpea image are obtained in the extremely short time, improve working efficiency of the invention.
Preferably, a kind of contactless palmmprint vena metacarpea described above mixes identifying system, the data processing dress
It sets and is extracted and processing module, characteristic extracting module, feature comparison module, described image including image segmentation module, key area
Segmentation module is extracted with key area and is connect with processing module, and the key area extracts and processing module and the feature extraction
Module connection, the characteristic extracting module are connect with feature comparison module.
Data processing module is used to handle the palmprint image and vena metacarpea image of acquisition, wherein image segmentation module
For realizing the positioning of segmentation and positioning and vena metacarpea image to palmprint image, key area is extracted with processing module for mentioning
It takes out palmprint image and characteristic area on vena metacarpea image and carries out contrast enhancing, characteristic extracting module is for extracting the palm
The feature and coding for comparison on print image and vena metacarpea image, feature comparison module are used for the feature extracted and guarantor
The reserved sample characteristics deposited are compared, and realize the identification to identity.
Preferably, a kind of contactless palmmprint vena metacarpea described above mixes identifying system, it further include display control module,
The display control module is set on the data processing equipment and is connected with the source current duty cycle control arrangement.
Display control module is used to carry out quality evaluation calculating to the vena metacarpea image of acquisition, and controls light source according to calculated result
The starting of current duty cycle control device.
Preferably, a kind of contactless palmmprint vena metacarpea described above mixes identifying system, the guiding device is
Curved surface light guide sheet, the curved surface light guide sheet is cyclic structure and its inner wall is lower than outer wall, and the outer wall of the curved surface light guide sheet is in stream
Line style upwardly extends.
Curved surface light guide sheet, which is set as cyclic annular and its inner wall, can guarantee that palm area can obtain foot lower than the structure of outer wall
Enough photo-irradiation intensities, to guarantee the clarity of the palmprint image obtained and vena metacarpea image.
Preferably, a kind of contactless palmmprint vena metacarpea described above mixes identifying system, the guiding device table
Face is provided with frosted.
Guiding device using matte surface can softening visible light ray and near infrared light irradiation, while preventing illumination again
Unevenness leads to local bloom, guarantees lighting effect.
Preferably, a kind of contactless palmmprint vena metacarpea described above mixes identifying system, the light source control dress
It is set to infrared proximity sensing device, is provided with light-transmitting opening on the guiding device, described in the infrared proximity sensing device penetrates
Light-transmitting opening issues signal.
Infrared proximity sensing device can guarantee that light source assembly starts when palm is close, provide sufficient effective illumination and impinge upon
On palm, light source assembly is closed when palm leaves, reduce energy consumption and is prolonged the service life, and utilizes frosted softening in guiding device
In the case where light, the light-transmitting opening being arranged on guiding device is used to guarantee that the normal of infrared proximity sensing device signal to be issued and connect
It receives.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of luminescence unit group in the present invention.
Specific embodiment
Present invention is further described in detail for 1-2 and specific embodiment with reference to the accompanying drawing, but they are not to this
The limitation of invention:
Embodiment 1
A kind of contactless palmmprint vena metacarpea mixing identifying system, including pedestal 4, further include guiding device 1, image collection assembly
2, light source assembly 5, light source control device 6, data transmission device 8, data processing equipment 9, source current duty cycle control arrangement
7, described image acquisition component 2, light source assembly 5 are set on the pedestal 4, and the guiding device 1 is located at described image acquisition
2 top of component, the light source assembly 5 emit beam and through the guiding device 1, the light source control device 6 and the light
Source component 5 is connected and controls the unlatching and closure of the light source assembly 5, and the data transmission device 8 is acquired with described image
Component 2, data processing equipment 9 are connected, and the light source assembly 5 includes visible light source device, near infrared light source apparatus, described
Source current duty cycle control arrangement 7 is connected with the near infrared light source apparatus, the data processing equipment 9 and the light source
Current duty cycle control device 7, which is connected and controls the source current duty cycle control arrangement 7, fills the near-infrared light source
The light intensity proportion set is adjusted, and described image acquisition component 2 includes visible optical mode group 21, near-infrared mould group 22, described
Visible light source device matches acquisition palmprint image with the visible optical mode group 21, the near infrared light source apparatus and described close
Infrared mould group 22 matches acquisition vena metacarpea image.
In use, palm is placed in the top of guiding device 1, light source control device 6 receives signal and starts light source group
Part 5, light source assembly 5 is it will be seen that light light and near infrared light are irradiated on palm, and wherein visible light source device issues visible
Light light, near infrared light source apparatus issue near infrared light, it is seen that light light is irradiated to the light of palm back reflection by visible light
Mould group 21 receives, it is seen that optical mode group 21 collects palmprint image and palmprint image is transferred to data transmission device 8, near infrared light
The light that line is irradiated to palm back reflection is received by near-infrared mould group 22, and near-infrared mould group 22 collects vena metacarpea image and will the palm
Vein image is transferred to data transmission device 8, and data transmission device 8 is by palmprint image, vena metacarpea image transmitting to data processing
In device 9, data processing equipment 9 compares collected palmprint image, vena metacarpea image and reserved sample, completes identification, number
Quality evaluation calculating also is carried out to vena metacarpea image according to processing unit 9, if the quality dissatisfaction of vena metacarpea image is quasi-, source current
Duty cycle control arrangement 7 starts, and the intensity by controlling near infrared light source apparatus matches, and improves the clear of the vena metacarpea image of acquisition
Clear degree.
Preferably, the visible optical mode group 21 includes visible images imaging lens 211, visible light band pass filter
212, palmprint image sensor 213, the near-infrared mould group 22 include near-infrared image imaging lens 221, the filter of near-infrared band logical
Wave plate 222, vena metacarpea imaging sensor 223, the visible images imaging lens 211, near-infrared image imaging lens 221 are perpendicular
To being arranged on the pedestal 4, the palmprint image sensor 213, vena metacarpea imaging sensor 223 are set to the pedestal 4
On, the visible light band pass filter 212 connects the visible images imaging lens 211 and palmprint image sensor 213, institute
It states near-infrared band pass filter 222 and connects the near-infrared image imaging lens 221 and vena metacarpea imaging sensor 223, it is described
Palmprint image sensor 213, vena metacarpea imaging sensor 223 are connected with the data transmission device 8.
Preferably, the visible light source device includes blue-ray LED particle 54, the near infrared light source apparatus includes extremely
The different infrared LED particle of few three wavelength, the wavelength of the infrared LED particle are 760nm-940nm, the blue light
LED particle 54 and the infrared LED particle form luminescence unit group 51, and the luminescence unit group 51 is set to the visible optical mode
By group 21, near-infrared mould group 22, the source current duty cycle control arrangement 7 adjusts the intensity between the infrared LED particle
Proportion.
Preferably, the quantity of the luminescence unit group 51 is at least 3,51 annular array of luminescence unit group is in institute
State visible optical mode group 21, around near-infrared mould group 22.
Preferably, further including image channel switch controller 3, described image channel switch controller 3 and the palmmprint
Imaging sensor 213, vena metacarpea imaging sensor 223 are connected and switch the palmprint image sensor 213 and vena metacarpea figure
As sensor 223.
Preferably, the data processing equipment 9 includes image segmentation module, key area extracts and processing module, spy
Extraction module, feature comparison module are levied, described image is divided module and connect with key area extraction with processing module, the key
Extracted region is connect with processing module with the characteristic extracting module, and the characteristic extracting module is connect with feature comparison module.
Preferably, further include display control module 91, the display control module 91 be set on the data processing equipment 9 and with
The source current duty cycle control arrangement 7 is connected.
Preferably, the guiding device 1 is curved surface light guide sheet, the curved surface light guide sheet is cyclic structure and its inner wall is low
In outer wall, the outer wall of the curved surface light guide sheet is streamlined to be upwardly extended.
Preferably, 1 surface of guiding device is provided with frosted.
Preferably, the light source control device 6 is infrared proximity sensing device, it is provided on the guiding device 1
Optical port 11, the infrared proximity sensing device issue signal through the light-transmitting opening 11.
Specifically, palm is placed on 1 top of guiding device by user, infrared proximity sensing device receives signal and opens
Dynamic luminescence unit group 51, the quantity of luminescence unit group 51 is 3 or more and annular array is in visible optical mode group 21, near-infrared mould group
Around 22, the light that luminescence unit group 51 issues is emitted on palm through curved surface light guide sheet, and wherein blue-ray LED particle 54 is launched
Visible light, it is seen that illumination is mapped to palm surface generation reflection and projects completion focusing on visible images imaging lens 211, focuses
Visible light ray afterwards is filtered and is projected on palmprint image sensor 213 by visible light band pass filter 212, is realized
The acquisition of palmprint image, infrared LED particle can be three, respectively 760nm infrared LED particle 52,850nm infrared LED
Grain 53,940nm infrared LED particle 55, three infrared LED particles issue equally distributed near infrared light, and near infrared light is through curved surface
It being irradiated on palm after light guide sheet softening, the near infrared light reflected passes through the focusing of near-infrared image imaging lens 221, then
The filtering that invalid wave band optical signal is completed by the near-infrared band pass filter 222 of lower section is finally projected to vena metacarpea image biography
On sensor 223, the acquisition of vena metacarpea image is realized, in image acquisition process, image channel switch controller 3 controls palmmprint figure
As the switching of sensor 213, vena metacarpea imaging sensor 223, guarantee can obtain palmmprint and the palm simultaneously in a very short period of time
Vein image, palmprint image, the vena metacarpea image of acquisition are transferred on data processing equipment 9 by data transmission device 8, first
The vena metacarpea image of 91 pairs of display control module acquisitions carries out quality evaluation calculating, if vena metacarpea picture quality does not meet subsequent processing
It is required that then going adjustment reasonable according to picture contrast quality evaluation index and then control source current duty cycle control arrangement 7
Duty ratio reacquires vena metacarpea image, and the vena metacarpea image of subsequent processing quality requirement, image segmentation mould are met until obtaining
Block is split and positions to palmprint image, reflects in conjunction with approximate position linearity existing between palmprint image and vena metacarpea image
Relationship is penetrated, the location information in vena metacarpea image is obtained, then key area extraction is fast and accurately extracted with processing module
The key area of palmprint image and vena metacarpea image is simultaneously normalized key area, contrast enhancement processing, then
The feature in key area is extracted and encoded with characteristic extracting module, feature comparison module is by the feature extracted and in advance
The eigen that keeps sample is compared, to realize the identification to identity.
In short, the foregoing is merely presently preferred embodiments of the present invention, made by all ranges according to the present patent application patent
Deng variation and modification, it is all covered by the present invention.
Claims (10)
1. a kind of contactless palmmprint vena metacarpea mixes identifying system, including pedestal (4), it is characterised in that: further include guide-lighting dress
Set (1), image collection assembly (2), light source assembly (5), light source control device (6), data transmission device (8), data processing dress
(9), source current duty cycle control arrangement (7) are set, described image acquisition component (2), light source assembly (5) are set to the pedestal
(4) on, the guiding device (1) is located above described image acquisition component (2), and the light source assembly (5) emits beam simultaneously thoroughly
It crosses the guiding device (1), the light source control device (6) is connected with the light source assembly (5) and controls the light source group
The unlatching and closure of part (5), the data transmission device (8) and described image acquisition component (2), data processing equipment (9) phase
Connection, the light source assembly (5) include visible light source device, near infrared light source apparatus, the source current duty ratio control
Device (7) is connected with the near infrared light source apparatus, and the data processing equipment (9) and the source current duty ratio control
Device (7) is connected and to control the source current duty cycle control arrangement (7) strong to the light of the near infrared light source apparatus
Degree proportion is adjusted, and described image acquisition component (2) includes visible optical mode group (21), near-infrared mould group (22), described visible
Radiant device matches acquisition palmprint image with the visible optical mode group (21), the near infrared light source apparatus with it is described close red
External mold group (22) matches acquisition vena metacarpea image.
2. a kind of contactless palmmprint vena metacarpea according to claim 1 mixes identifying system, it is characterised in that: it is described can
Light-exposed mould group (21) includes visible images imaging lens (211), visible light band pass filter (212), palmprint image sensor
(213), the near-infrared mould group (22) includes near-infrared image imaging lens (221), near-infrared band pass filter (222), the palm
Vein image sensor (223), the visible images imaging lens (211), near-infrared image imaging lens (221) are vertically arranged
It is listed on the pedestal (4), the palmprint image sensor (213), vena metacarpea imaging sensor (223) are set to the pedestal
(4) on, the visible light band pass filter (212) connects the visible images imaging lens (211) and palmprint image senses
Device (213), the near-infrared band pass filter (222) connect the near-infrared image imaging lens (221) and vena metacarpea image
Sensor (223), the palmprint image sensor (213), vena metacarpea imaging sensor (223) and the data transmission device
(8) it is connected.
3. a kind of contactless palmmprint vena metacarpea according to claim 1 mixes identifying system, it is characterised in that: it is described can
Light-exposed light supply apparatus includes blue-ray LED particle (54), and the near infrared light source apparatus includes that at least three wavelength are different
Infrared LED particle, the wavelength of the infrared LED particle are 760nm-940nm, the blue-ray LED particle (54) with it is described infrared
LED particle forms luminescence unit group (51), and the luminescence unit group (51) is set to the visible optical mode group (21), near-infrared mould
Group (22) is other, and the source current duty cycle control arrangement (7) adjusts the intensity proportion between the infrared LED particle.
4. a kind of contactless palmmprint vena metacarpea according to claim 3 mixes identifying system, it is characterised in that: the hair
The quantity of light unit group (51) is at least 3, and luminescence unit group (51) annular array is in the visible optical mode group (21), close
Around infrared mould group (22).
5. a kind of contactless palmmprint vena metacarpea according to claim 2 mixes identifying system, it is characterised in that: further include
Image channel switch controller (3), described image channel switch controller (3) and the palmprint image sensor (213), the palm are quiet
Arteries and veins imaging sensor (223) is connected and switches the palmprint image sensor (213) and vena metacarpea imaging sensor (223).
6. a kind of contactless palmmprint vena metacarpea according to claim 1 mixes identifying system, it is characterised in that: the number
According to processing unit (9) include image segmentation module, key area extracts and processing module, characteristic extracting module, aspect ratio are to mould
Block, described image segmentation module and key area are extracted connect with processing module, the key area extraction and processing module and
The characteristic extracting module connection, the characteristic extracting module are connect with feature comparison module.
7. a kind of contactless palmmprint vena metacarpea according to claim 1 mixes identifying system, it is characterised in that: further include
Display control module (91), the display control module (91) be set on the data processing equipment (9) and with the source current duty
It is connected than control device (7).
8. a kind of contactless palmmprint vena metacarpea according to claim 1 mixes identifying system, it is characterised in that: described to lead
Electro-optical device (1) is curved surface light guide sheet, and the curved surface light guide sheet is cyclic structure and its inner wall is lower than outer wall, the curved surface light guide sheet
Outer wall streamlined upwardly extend.
9. a kind of contactless palmmprint vena metacarpea according to claim 1 mixes identifying system, it is characterised in that: described to lead
Electro-optical device (1) surface is provided with frosted.
10. a kind of contactless palmmprint vena metacarpea according to claim 9 mixes identifying system, it is characterised in that: described
Light source control device (6) is infrared proximity sensing device, is provided with light-transmitting opening (11) on the guiding device (1), described infrared
Signal is issued through the light-transmitting opening (11) close to sensing device.
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