CN106960194A - A kind of vein identification device - Google Patents
A kind of vein identification device Download PDFInfo
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- CN106960194A CN106960194A CN201710182827.2A CN201710182827A CN106960194A CN 106960194 A CN106960194 A CN 106960194A CN 201710182827 A CN201710182827 A CN 201710182827A CN 106960194 A CN106960194 A CN 106960194A
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- finger
- module
- image
- finger groove
- vein
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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
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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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
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/14—Vascular patterns
Abstract
A kind of vein identification device, it is related to a kind of vein identification technology, including housing, finger groove and radiation source module and image-forming module are provided with described housing, it is characterized in that, identification enhancing module is additionally provided with described housing, described identification enhancing module includes the one or more of finger positioner, irradiation intensifier and image enhancement device.Compared with prior art, the present apparatus has identification enhancing module, identification enhancing module includes the one or more of finger positioner, irradiation intensifier and image enhancement device, finger positioner is by structure light irradiation finger tip and refers to the angle of pitch and deviation angle that end measures finger, obtains good finger position information；Intensifier is irradiated by condenser by light-resource fousing to finger, obtains good picture quality；Image enhancement device obtains enough marginal informations and longer light path by catoptric arrangement, obtains good image contrast.
Description
Technical field
Refer to vein identification technology the present invention relates to a kind of vein identification technology, especially one kind.
Background technology
Finger vena identification is biometrics identification technology of new generation, and its main advantage is that vein is concealed in body
Portion, is difficult to steal and replicates, and only live body just has vein.Relative to the traditional identity authentication technique such as fingerprint, its security performance
It is higher, before there is huge application in terms of safety door inhibition, credit card validation, medical verification, criminal's identification and file administration
Scape.Finger venous image obtains the mechanism that part ray is absorbed by hemochrome when passing through finger according near infrared ray so as to realize hand
Refer to the display of vein image.
In this specific identification process, due to finger thickness, vein thickness difference substantially, and finger swings and caused
Image-forming range change, and vein train of thought is big by the interference of muscle, bone and other noises during imaging, and the error having influence on can be led
Cause finger venous image definition low, uneven.And quality too poor vein image is difficult to extract feature, follow-up spy is had a strong impact on
Levy the performance of identification.Therefore, how to ensure that finger image-forming range is stable in identification, the intensity of light source is stable to be one and new ask
Topic.
The content of the invention
The present invention is for deficiency of the prior art there is provided a kind of vein identification device, and there is the present apparatus identification to strengthen
Module, identification enhancing module includes the one or more of finger positioner, irradiation intensifier and image enhancement device, finger
Positioner is by structure light irradiation finger tip and refers to the angle of pitch and deviation angle that end measures finger, obtains good finger position letter
Breath；Intensifier is irradiated by condenser by light-resource fousing to finger, obtains good picture quality；Image enhancement device leads to
Cross catoptric arrangement and obtain enough marginal informations and longer light path, obtain good image contrast.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals：A kind of vein identification device,
Including housing, it is provided with finger groove and radiation source module and image-forming module, described housing and also sets in described housing
Identification enhancing module is equipped with, described identification enhancing module includes finger positioner, irradiation intensifier and image enhancement dress
The one or more put.
In above-mentioned technical proposal, it is preferred that described finger positioner includes reflection source group, described reflection source
Group includes being provided with relatively described finger groove tip portion and refers to the positioned light source of last part, and described positioned light source is to described
Near infrared light is irradiated in finger groove direction.
It is described fixed in above-mentioned technical proposal, it is preferred that be provided with the lens to form structure light above described positioned light source
The light source near infrared light that irradiates in position is by lens forming structure light irradiation to finger groove.
In above-mentioned technical proposal, it is preferred that described irradiation intensifier includes condenser, described radiation source module
Irradiated by the condenser to finger groove direction.
In above-mentioned technical proposal, it is preferred that described radiation source module includes LED array, described LED array passes through
The condenser irradiates to finger groove direction.
In above-mentioned technical proposal, it is preferred that described image enhancement device includes first secondary mirror, described first secondary reflection
Mirror is arranged on the lower section of the finger groove, has 45 degree of angles between described first secondary mirror and described finger groove, described
Image-forming module towards described speculum.
In above-mentioned technical proposal, it is preferred that described image enhancement device includes first secondary mirror and secondary reflection mirror, institute
The first secondary mirror stated is arranged on the lower section of the finger groove, has 53 between described first secondary mirror and described finger groove
Spend angle, the secondary reflection mirror be arranged on it is described just above secondary mirror and with described first mirror parallel, it is described
Image-forming module faces described secondary reflection mirror.
In above-mentioned technical proposal, it is preferred that described image-forming module includes camera device and infrared fileter.
It is described in above-mentioned technical proposal, it is preferred that the Micro-touch switch being engaged with finger tip is provided with described finger groove
Described radiation source module, described image-forming module and the described identification enhancing module of Micro-touch switch control open.
In above-mentioned technical proposal, it is preferred that vibrational feedback device is additionally provided with described Micro-touch switch.
The cardinal principle for referring to hand vein recognition is part ray when near infrared ray passes through finger by near infrared light finger
Absorbed so as to realize the display of finger venous image, be subsequently identified according to vein image by hemochrome.Shone referring to vein
Finger needs that forbids to be placed on suitable image distance and object distance position when penetrating, and could so obtain preferable image quality and finger
Marginal information, the interference for excluding veiling glare, so as to quickly accurately be identified.In actual identification process, whether finger moves
Whether dynamic, image distance and object distance properly badly influence the accuracy and speed of identification.In the prior art in order to overcome this shortcoming past
Toward complicated cumbersome algorithm can be designed, high-quality image is obtained by substantial amounts of calculate, but these complicated algorithms can only
It is relative to improve the precision of images, influence of these problems to image quality can not be prevented completely, while error rate is also higher.
It is of the invention then be in vein identification device increase identification enhancing module, identification enhancing module include finger position dress
Put, irradiate the one or more of intensifier and image enhancement device.The effect of finger positioner is to determine hand in shooting
The positional information of finger, now the positional information of finger is exactly known parameter, in identification without carrying out complicated calculating with regard to energy
The relative positional information of finger is obtained, location parameter can be introduced directly into thereafter space conversion is carried out to image, so not only
Can significantly optimized algorithm, enhancing recognition capability, also overcome influence of the finger movement to accuracy of identification.Hand in the present invention
Specific bit device includes being arranged on the positioned light source with camera device homonymy, and positioned light source is divided into two parts, is respectively aligned to finger tip
Position and the last position of finger.In actual use, after finger is inserted into finger groove, radiation source module starts first, opponent
Finger direction is irradiated, and then radiation source module is closed rapidly, and locating module starts at once to be also irradiated to finger orientation.
This irradiation time interval twice is very of short duration, it is of short duration to camera device can capture simultaneously the two different light signals with
And finger has little time to make displacement within this time.The image that now camera device is obtained just does not refer to the information of vein only
Positional information with finger, so as to more accurately be rapidly performed by identification.
The lens to form structure light can also be set on positioned light source, if it can not form the lens of structure light
What positioned light source was irradiated to finger is divergent light source, and the angle of pitch that camera device can only obtain finger fingertip and refer between end is believed
Breath.If with that can form the lens of structure light, positioned light source directive hand refers to the structure light with given shape,
This structure light it is generally rectangular in shape, be radiated at the change occurred on finger by structure light, camera device not only can be with
Skew angle information can also be obtained by obtaining pitching angle information, can preferably be obtained to finger edge feature information so that be calculated
It is more accurate.
Irradiating intensifier includes condenser, and condenser is arranged between LED array and finger groove, condenser and finger groove
Distance is needed by calculating, and optimal distance is that the near infrared light light source irradiated can be allowed on LED array to assemble after condenser
Onto finger groove.It can so allow light source gather and excluded on finger influence of the contrast to finger, while finger can also be strengthened
The display effect at edge, makes image quality higher.
Image enhancement device could be arranged to primary event and secondary reflection, and just secondary mirror is needed in primary event,
First secondary mirror is arranged on the lower section of finger groove, and just has 45 degree of angles between secondary mirror and finger groove, is drawn during identification
Face enters back into image-forming module after first secondary mirror, so that the Distance Shortened of finger lower end and image-forming module, allows dress
Put volume does not influence image quality while can reducing.But image-forming module can not be placed into finger groove just during primary event
Lower section is, it is necessary to other space.
Just secondary mirror and secondary reflection mirror are needed during secondary reflection, is just had at this moment between secondary mirror and finger groove
53 degree of angles, both have 37 degree of angle, secondary reflection mirror and a first mirror parallel between horizontal plane, imaging device towards
Secondary reflection mirror and parallel with finger groove.Now just the light path of secondary mirror finger in one's hands is l1, first secondary mirror to secondary counter
The light path for penetrating mirror is l2, and the light path of secondary reflection mirror to imaging device is l3, and the distance of finger to imaging device is s.Normal
45 degree of angles in, total optical path with apart from equal, and s in the present invention<L1+ l2+ l3, greatly shorten whole device
Length, while can guarantee that the contrast at edge again under 37 degree of angle, it is ensured that finger edge is clear under 3-4 cm widths
Degree.If angle during secondary reflection causes visual field to diminish in too small or conference excessively, the contrast at edge extremely declines, therefore
At 37 degree, whole device can obtain suitable light path and visual field.
Compared with prior art, the beneficial effects of the invention are as follows：The present apparatus has identification enhancing module, identification enhancing module
Include the one or more of finger positioner, irradiation intensifier and image enhancement device, finger positioner passes through structure
Light irradiation finger tip and finger end measure the angle of pitch and deviation angle of finger, obtain good finger position information；Irradiate intensifier
By condenser by light-resource fousing to finger, good picture quality is obtained；Image enhancement device is obtained by catoptric arrangement
Enough marginal informations and longer light path, obtain good image contrast.
Brief description of the drawings
Fig. 1 is the schematic side view of the embodiment of the present invention 1.
Fig. 2 is the schematic side view of the embodiment of the present invention 2.
Fig. 3 is the schematic side view of the embodiment of the present invention 3.
Fig. 4 is the schematic diagram of the embodiment of the present invention 4.
Fig. 5 is the schematic diagram of the embodiment of the present invention 5.
Fig. 6 is the schematic side view of the embodiment of the present invention 6.
Fig. 7 is the schematic elevation view of the embodiment of the present invention 6.
Fig. 8 is the schematic side view of the embodiment of the present invention 7.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
Embodiment 1, as shown in figure 1, a kind of vein identification device, including housing 1, the described internal upper part of housing 1 is provided with
Finger groove 2, is provided with radiation source module in the top of finger groove 2, image-forming module and finger is provided with below finger groove
Positioner.Described radiation source module includes being provided with several evenly distributed LED on LED array 31, LED array 31
Lamp, described LED array 31 irradiates to the direction of finger groove 2.Described finger positioner includes reflection source group, and described is anti-
Penetrating light source group is included towards the positioned light source 51 in the tip portion of finger groove 2 and the last part of finger, described positioned light source 51
Near infrared light is irradiated to the described direction of finger groove 2.Described image-forming module includes CMOS cameras 41 and infrared fileter 42, institute
The infrared fileter 42 stated is between described CMOS cameras 41 and described finger groove 2.Also there is hand vein recognition in housing 1
System, vein recognition system includes processor, memory, picture recognition module, network connecting module etc..Obtained from CMOS cameras 41
Location drawing picture and vein image is obtained all to handle by vein recognition system.Vein recognition system can also pass through network connection mould
Block connected network carries out networking work or can also worked independently.
In use, finger 100 has been inserted into finger groove 2, the positioned light source 51 of finger positioner starts this moment, point
Not to the last partial illumination infrared light of tip portion and finger of finger 100, the location drawing picture that CMOS cameras 41 gather now obtains hand
The positional information of finger 100, positional information in the present embodiment only includes the position letter drawn according to the angle of pitch of finger 100
Breath.Finger positioner is then shut off, starts radiation source module, the open and close time between both is very fast, allows
LED array 31 is irradiated to finger 100, and light-source brightness is adjusted in irradiation process, makes vein imaging clear.Then hand vein recognition system
System processing image carries out feature extraction, subsequently according to pre-set threshold value, and feeds back matching result.The progress one by one from Sample Storehouse
Match somebody with somebody.
Then the flow of images match is entered the vein image of acquisition to calculate the angle of pitch according to location drawing picture first
The appropriate spatial alternation of row, subsequently carries out multimode identification to the image after conversion.Idiographic flow is：1st, carried according to location drawing picture
Take finger elevation information, finger mean breadth and each regional luminance information.2nd, noise reduction is carried out to vein image, then according to step
Information in rapid 1 carries out spatial alternation to vein image.3rd, vein image is normalized, makes size suitable.4th, it is right
Vein image carries out FFT and obtains characteristic value.5th, template matches are carried out, select similarity big according to the matching way of decision tree
In the result of threshold values, then more each similarity degree, optimum is obtained.
Embodiment 2, as shown in Fig. 2 a kind of vein identification device, including housing 1, the described internal upper part of housing 1 is provided with
Finger groove 2, is provided with radiation source module in the top of finger groove 2, image-forming module and finger is provided with below finger groove
Positioner.Described radiation source module includes being provided with several evenly distributed LED on LED array 31, LED array 31
Lamp, described LED array 31 irradiates to the direction of finger groove 2.Described finger positioner includes reflection source group, and described is anti-
Penetrating light source group includes being arranged on the tip portion of finger groove 2 and refers to the positioned light source 51 of last part, described positioned light source 51
Top is provided with the lens 52 to form structure light, and the near infrared light that the positioned light source 51 is irradiated passes through the formation structure of lens 52
Illumination directive finger groove 2.Described image-forming module includes CMOS cameras 41 and infrared fileter 42, described infrared fileter 42
Between described CMOS cameras 41 and described finger groove 2.Also there is vein recognition system, hand vein recognition system in housing 1
System includes processor, memory, picture recognition module, network connecting module etc..From CMOS cameras 41 obtain location drawing picture and
Vein image is all handled by vein recognition system.Vein recognition system can also be carried out by network connecting module connected network
Networking work can also work independently.
In use, finger 100 has been inserted into finger groove 2, the positioned light source 51 of locating module starts this moment, respectively to
The last partial illumination infrared light of tip portion and finger of finger 100, positioned light source 51 utilizes the formation structure light of lens 52 in irradiation,
The location drawing picture that CMOS cameras 41 are gathered now obtains the positional information of finger 100, and positional information in the present embodiment includes
The positional information drawn according to the angle of pitch of finger 100, and the finger edge information that deviation angle is drawn.Finger is then shut off to determine
Position device, starts radiation source module, the open and close time between both is very fast, allows LED array 31 to finger 100
Irradiation, light-source brightness is adjusted in irradiation process, makes vein imaging clear.Then vein recognition system processing image carries out feature
Extract, subsequently according to pre-set threshold value, matched one by one from Sample Storehouse.And feed back matching result.
Then the flow of images match is entered the vein image of acquisition to calculate the angle of pitch according to location drawing picture first
The appropriate spatial alternation of row, subsequently carries out multimode identification to the image after conversion.Idiographic flow is：1st, carried according to location drawing picture
Take finger elevation information, finger edge information, finger mean breadth and each regional luminance information.2nd, vein image is dropped
Make an uproar, spatial alternation is then carried out to vein image according to the information in step 1.3rd, vein image is normalized, made
Size is suitable.4th, FFT is carried out to vein image and obtains characteristic value.5th, template matches are carried out, according to the match party of decision tree
Formula selection similarity is more than the result of threshold values, then more each similarity degree, obtains optimum.
Embodiment 3, as shown in figure 3, a kind of vein identification device, including housing 1, the described internal upper part of housing 1 is provided with
Finger groove 2, radiation source module and irradiation intensifier are provided with the top of finger groove 2, is provided with below finger groove
Image-forming module and finger positioner.Described radiation source module includes LED array 31, and described irradiation intensifier includes
Several evenly distributed LEDs are provided with condenser 32, LED array 31, described LED array 31 passes through the condenser
32 irradiate to the direction of finger groove 2.Described finger positioner includes reflection source group, and described reflection source group includes setting
Positioned light source 51 in the tip portion of finger groove 2 and the last part of finger, the described top of positioned light source 51 is provided with to form knot
The lens 52 of structure light, the near infrared light that the positioned light source 51 is irradiated forms structure light irradiation to finger groove 2 by lens 52.
Described image-forming module includes CMOS cameras 41 and infrared fileter 42, and described infrared fileter 42 is in described CMOS cameras
Between 41 and described finger groove 2.Also there is vein recognition system in housing 1, vein recognition system includes processor, storage
Device, picture recognition module, network connecting module etc..Location drawing picture and vein image, which are obtained, from CMOS cameras 41 all passes through vein
Identifying system processing.Vein recognition system can also be carried out networking work by network connecting module connected network or can also
Work independently.
In use, finger 100 has been inserted into finger groove 2, the positioned light source 51 of locating module starts this moment, respectively to
The last partial illumination infrared light of tip portion and finger of finger 100, positioned light source 51 utilizes the formation structure light of lens 52 in irradiation,
The location drawing picture that CMOS cameras 41 are gathered now obtains the positional information of finger 100, and positional information in the present embodiment includes
The positional information drawn according to the angle of pitch of finger 100, and the finger edge information that deviation angle is drawn.It is then shut off positioning mould
Block, starts radiation source module, and the open and close time between both is very fast, allows LED array 31 to be shone to finger 100
Penetrate, light source is by condenser 32 when LED array 31 irradiates, and condenser 32 can be D type optically focused rods, and radiation source passes through condenser
With regard to light-resource fousing can be allowed on finger 100 after 32, more preferable display effect is obtained.It is bright that light source can also be adjusted in irradiation process
Degree, makes vein imaging clear.Then vein recognition system processing image carries out feature extraction, subsequently according to pre-set threshold value, and
Matching result is fed back, the flow of images match is same as Example 2.
Embodiment 4, as shown in figure 4, a kind of vein identification device, also including image enhancement device, image enhancement device bag
Include just secondary mirror 44, described first secondary mirror 44 is arranged on the lower section of the finger groove 2, described first secondary mirror 44 with
There are 45 degree of angles between described finger groove 2, both just there is 45 degree of angle between secondary mirror 44 and horizontal plane, it is described
Image-forming module is towards described speculum.The device of remaining in the present embodiment is same as Example 3.
In use, finger 100 has been inserted into finger groove 2, the positioned light source of locating module starts this moment, respectively to hand
The tip portion for referring to 100 utilizes lens forming structure light, CMOS phases with last partial illumination infrared light, positioned light source is referred in irradiation
The location drawing picture that machine 41 is gathered now obtains the positional information of finger 100, and positional information in the present embodiment is included according to hand
Refer to the positional information that 100 angle of pitch is drawn, and the finger edge information that deviation angle is drawn.Locating module is then shut off, is opened
Dynamic radiation source module, the open and close time between both is very fast, allows LED array to be irradiated to finger 100, LED gusts
Light source is by condenser during row irradiation, and condenser can be D type optically focused rods, radiation source by after condenser with regard to light source can be allowed to gather
It is burnt on finger 100, obtain more preferable display effect.The imaging that positioned light source and radiation source are produced passes through first secondary mirror
44 are reflexed in CMOS cameras 41, and the volume of whole device can be so reduced in the case where not shortening light path, while not shadow
Ring image quality.Light-source brightness can also be adjusted in irradiation process, makes vein imaging clear.Then vein recognition system is handled
Image carries out feature extraction, subsequently according to pre-set threshold value, and feeds back matching result, flow and the phase of embodiment 2 of images match
Together.
Embodiment 5, as shown in figure 5, a kind of vein identification device, also including image enhancement device, described image enhancement
Device includes first secondary mirror 44 and secondary reflection mirror 45, and described first secondary mirror 44 is arranged on the lower section of the finger groove 2,
There are 53 degree angles, both with horizontal plane with 37 degree of angle, institute between described first secondary mirror 44 and described finger groove 2
State secondary reflection mirror 45 and be arranged on just secondary mirror 44 top and the imaging parallel, described with described first secondary mirror 45
Module faces are to described secondary reflection mirror.The device of remaining in the present embodiment is same as Example 3.
In use, finger 100 has been inserted into finger groove 2, the positioned light source of locating module starts this moment, respectively to hand
The tip portion for referring to 100 utilizes lens forming structure light, CMOS phases with last partial illumination infrared light, positioned light source is referred in irradiation
The location drawing picture of machine collection now obtains the positional information of finger 100, and positional information in the present embodiment is included according to finger
The positional information that 100 angle of pitch is drawn, and the finger edge information that deviation angle is drawn.Locating module is then shut off, is started
Radiation source module, the open and close time between both is very fast, allows LED array to be irradiated to finger 100, LED array
Light source is by condenser during irradiation, and condenser can be D type optically focused rods, and radiation source after condenser by that just can allow light-resource fousing
Onto finger 100, more preferable display effect is obtained.The imaging that positioned light source and radiation source are produced passes through first secondary mirror 44
Reflex in secondary reflection mirror 45, then reflexed to from secondary reflection mirror 45 in CMOS cameras 41, so that total optical path exceedes
CMOS cameras 41 arrive the air line distance of finger 100, can obtain preferably imaging figure, while just secondary mirror 44 and level
Face is in 37 degree of angles, and the picture contrast of finger frontside edge is still good under this angle, can't extend shadow because of total optical path
Ring the image quality of finger frontside edge.Light-source brightness can also be adjusted in irradiation process, makes vein imaging clear.Then it is quiet
Arteries and veins identifying system processing image carries out feature extraction, subsequently according to pre-set threshold value, and feeds back matching result, the stream of images match
Journey is same as Example 2.
Embodiment 6, as shown in Figure 6 and Figure 7, a kind of vein identification device, including housing 1, the described internal upper part of housing 1 are set
Finger groove 2 is equipped with, radiation source module and irradiation intensifier are provided with the top of finger groove 2, is set in the lower section of finger groove 2
It is equipped with image-forming module and finger positioner.Described radiation source module includes being provided with LED array 31, LED array 31
Several evenly distributed LEDs, described irradiation intensifier includes condenser 32, and described LED array 31 is by described
Condenser 32 irradiates to the direction of finger groove 2.Described finger positioner includes reflection source group, described reflection source group bag
The positioned light source 51 for being arranged on the tip portion of finger groove 2 and referring to last part is included, the described top of positioned light source 51 is provided with
The lens 52 of structure light are formed, the near infrared light that the positioned light source 51 is irradiated forms structure light irradiation to hand by lens 52
Refer to groove 2.Described image-forming module includes CMOS cameras 41 and infrared fileter 42, and described infrared fileter 42 is described
2 are provided with the finger support 6 coordinated with finger in finger groove described between CMOS cameras 41 and described finger groove 2, refer to and are set in support 6
Be equipped with the Micro-touch switch 61 being engaged with finger tip, described Micro-touch switch 61 control described radiation source module, it is described into
As module and described finger positioner are opened, vibrational feedback device is additionally provided with Micro-touch switch 61.Also have in housing 1
There is vein recognition system, vein recognition system includes processor, memory, picture recognition module, network connecting module etc..From
CMOS cameras 41 obtain location drawing picture and vein image and all handled by vein recognition system.Vein recognition system can also lead to
Network connecting module connected network is crossed to carry out networking work or can also work independently.
In use, finger 100 has been inserted into finger groove 2, only opened when finger 100 touches the micro-touch in finger support 6
Whole device just starts to start after closing 61, and otherwise whole device is in the holding state of energy-conservation.Moreover when finger 100 is contacted
During Micro-touch switch 61, the vibrational feedback device in Micro-touch switch 61 is given finger 100 and fed back, and tells that user's finger 100 is placed
Correct whole system is opened.Micro-touch switch 61 allows the positioned light source 51 of locating module to start first after being touched, respectively to finger
The 100 last partial illumination infrared light of tip portion and finger, positioned light source 51 utilizes the formation structure light of lens 52, CMOS in irradiation
The location drawing picture that camera 41 is gathered now obtains the positional information of finger 100, and positional information in the present embodiment includes basis
The positional information that the angle of pitch of finger 100 is drawn, and the finger edge information that deviation angle is drawn.It is then shut off locating module,
Start radiation source module, the open and close time between both is very fast, allows LED array 31 to be irradiated to finger 100,
Light source is by condenser 32 when LED array 31 irradiates, and condenser 32 can be D type optically focused rods, and radiation source passes through condenser 32
Just wasteland can be allowed to focus on finger 100 afterwards, obtain more preferable display effect.It is bright that light source can also be adjusted in irradiation process
Degree, makes vein imaging clear.Then vein recognition system processing image carries out feature extraction, subsequently according to pre-set threshold value, and
Matching result is fed back, the flow of images match is same as Example 2.
Embodiment 7, as shown in figure 8, a kind of vein identification device, including housing 1, bottom is provided with described housing 1
Finger groove 2, is provided with radiation source module in the lower section of finger groove 2, image-forming module and finger is provided with above finger groove
Positioner.Described radiation source module includes being provided with several evenly distributed LED on LED array 31, LED array 31
Lamp, described LED array 31 irradiates to the direction of finger groove 2.Described finger positioner includes reflection source group, and described is anti-
Penetrating light source group includes being arranged on the tip portion of finger groove 2 and refers to the positioned light source 51 of last part, described positioned light source 51
Top is provided with the lens 52 to form structure light, and the near infrared light that the positioned light source 51 is irradiated passes through the formation structure of lens 52
Illumination directive finger groove 2.Described image-forming module includes CMOS cameras 41 and infrared fileter 42, described infrared fileter 42
Between described CMOS cameras 41 and described finger groove 2.Position just phase of this implementation compared to embodiment 1-6 internal modules
Instead, radiation source module is so arranged on bottom, object distance bigger between LED array 31 and finger 100 can be obtained, obtained
The image of better quality.Other constructions of equipment, application method and matching algorithm are consistent with previous embodiment in the present embodiment.
Above-described embodiment is several embodiments of the present invention, does not include all embodiments of the present invention.Implementing
The light source of LED in example 1 to 7 on LED array 31 can be near infrared light section of the wavelength between 750 mm -940mm, this
The infrared fileter of Shi Caiyong narrow bandpass.If the LED on LED array 31 uses multispectral light source, need to use long wave
Pass filter.Whole device without installing filtration piece additional again if image-forming module uses infrared CMOS cameras 41.Implementing
Selection of the example 6 to Micro-touch switch can be piezoelectric ceramics, capacitive sensing or mechanical Micro-touch switch, and this will combine and benefit from the longevity
Life and cost consideration.The application field of the present invention extensively, cannot be only used for door lock, gate inhibition, signing in instrument, gate etc. and set
It is standby, it can be also used in terms of medical treatment, police service.
Claims (10)
1. a kind of vein identification device, including housing（1）, described housing（1）Inside it is provided with finger groove（2）And radiation source
Module and image-forming module, it is characterized in that, described housing（1）Inside it is additionally provided with identification enhancing module, described identification enhancing mould
Block includes the one or more of finger positioner, irradiation intensifier and image enhancement device.
2. a kind of vein identification device according to claim 1, it is characterized in that, described finger positioner includes reflection
Light source group, described reflection source group includes being provided with relatively described finger groove（2）Tip portion and the positioning light for referring to last part
Source（51）, described positioned light source（51）To described finger groove（2）Near infrared light is irradiated in direction.
3. a kind of vein identification device according to claim 2, it is characterized in that, described positioned light source（51）Top is set
There are the lens to form structure light（52）, the positioned light source（51）The near infrared light irradiated passes through lens（52）Form structure light
Irradiate to finger groove（2）.
4. a kind of vein identification device according to claim 1, it is characterized in that, described irradiation intensifier includes optically focused
Mirror（32）, described radiation source module passes through the condenser（32）To finger groove（2）Direction is irradiated.
5. a kind of vein identification device according to claim 4, it is characterized in that, described radiation source module includes LED
Array（31）, described LED array（31）Pass through the condenser（32）To finger groove（2）Direction is irradiated.
6. a kind of vein identification device according to claim 1, it is characterized in that, described image enhancement device includes first
Speculum（44）, described first secondary mirror is arranged on the finger groove（2）Lower section, described first secondary mirror（44）With institute
The finger groove stated（2）Between there are 45 degree of angles, described image-forming module is towards described first secondary mirror（44）.
7. a kind of vein identification device according to claim 1, it is characterized in that, described image enhancement device includes first
Speculum（44）And secondary reflection mirror（45）, described first secondary mirror（44）It is arranged on the finger groove（2）Lower section, it is described
First secondary mirror（44）With described finger groove（2）Between there are 53 degree of angles, the secondary reflection mirror（45）It is arranged on institute
State just secondary mirror（44）Top and with described first secondary mirror（44）Parallel, described image-forming module is in face of described secondary
Speculum（45）.
8. a kind of vein identification device according to claim 6 or 7, it is characterized in that, described image-forming module includes shooting
Device and infrared fileter（42）.
9. a kind of vein identification device according to claim 1, it is characterized in that, described finger groove（2）Inside be provided with
The Micro-touch switch that finger tip is engaged（61）, described Micro-touch switch（61）The described radiation source module of control, described imaging
Module and described identification enhancing module are opened.
10. a kind of vein identification device according to claim 8, it is characterized in that, described Micro-touch switch（6）On also set up
There is vibrational feedback device.
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