CN107590425A - Vein authentication apparatus and its vein authentication method - Google Patents
Vein authentication apparatus and its vein authentication method Download PDFInfo
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- CN107590425A CN107590425A CN201610538436.5A CN201610538436A CN107590425A CN 107590425 A CN107590425 A CN 107590425A CN 201610538436 A CN201610538436 A CN 201610538436A CN 107590425 A CN107590425 A CN 107590425A
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- 210000003462 vein Anatomy 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003384 imaging method Methods 0.000 claims abstract description 113
- 238000012545 processing Methods 0.000 claims abstract description 19
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 230000001678 irradiating effect Effects 0.000 claims abstract description 7
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 6
- 210000001367 artery Anatomy 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
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Abstract
The present invention relates to biological identification field, more particularly, to a kind of vein authentication apparatus and its vein authentication method.The vein authentication apparatus of the present invention includes：Imaging section, image processing part and vena identification portion；Imaging section includes：Light irradiation unit, for irradiating vena identification target；Lens unit, comprising at least two lens, each lens are imaged by transmiting the light wave from vena identification target to the subregion of vena identification target；Image acquisition units, for gathering as the first image of the subregion corresponding with the lens of each lens imaging；The first image that image processing part is used to collect image acquisition units carries out image synthesis processing, forms the second image of the vein image comprising vena identification target, and the vein image of vena identification target is extracted from second image；The vein image that vena identification portion is used for the vena identification target based on extraction is authenticated handling.The present invention can effectively reduce the size of vein authentication apparatus.
Description
Technical field
The present invention relates to biological identification field, more particularly, to a kind of vein authentication apparatus and its vein authentication method.
Background technology
In recent years, prevailing with mobile payment and internet, the importance of safety certification increasingly highlights.Instantly
Security certification system have：It is authenticated by password, various ways is authenticated etc. by human body biological characteristics.Pass through password
It is authenticated existing and forgets Password and the problems such as password is stolen；It is authenticated being presently the most convenient by human body biological characteristics
Differentiate means with the personal identification of safety.Conventional human body biological characteristics have：Face, fingerprint, vocal print, iris, hand vein etc..
Current most widely used authentication techniques be fingerprint recognition, but be used as surface characteristics, fingerprint exist easily forge, it is easy distort etc. it is scarce
Point, therefore, the popularization in fields such as the higher payment finance of security level required acquire a certain degree of difficulty.
Finger vena identifies the identification technology also with human body biological characteristics, and it utilizes the vein point in different fingers
Cloth difference carries out identification.Operation principle is：The blood flowed in finger can absorb the light of specific wavelength, when with specific
During the light irradiation finger of wavelength, it is possible to obtain the image of finger vena.Because finger vena ensconces finger interior, it is not easy to
It is replicated and usurps, and it also has the feature of vivo identification, and forgery difficulty is big, so finger vena has height false proof, high
The characteristics of security.
With the development of the small information processing unit such as mobile phone, tablet personal computer, finger vena identification is applied to above-mentioned small
The cry more and more higher of type information processor, but present finger vena device is imaged due to needing using lens, very
Hardly possible realizes miniaturization slimming.Japanese Unexamined Patent Publication 2009-89727 publications are disclosed using microlens array technology, realization device
The scheme of slimming, as shown in figure 1, the shooting area length a and imaging region length a1 of finger are equal, 10 be lens array in figure
Row, 11 be light shield layer, and 12 be imaging sensor.Due to by the way of equimultiple imaging, the technology need to use it is very big into
As sensor.Due to the trend of the miniaturization of imaging sensor, which is difficult with cheap universal imaging sensor
Realize.The scheme realized using lens array and reduce device size is also described in CN201410115291, still, due to saturating
The use of lens array (60x 40) adds IMAQ and the difficulty of processing, and needs special process to carry out lens working battle array
Row.The setting of adjustment imaging source is described in CN200810088542, by adjusting the setting of light source, reduction can be played
The purpose of module thickness；But in the case of application short focus wide field lens unit, as shown in Fig. 2 20 be lens, 21 are
Imaging sensor, only when finger and imaging sensor are at a distance sufficiently large, length is that a finger areas can just image in image
On sensor, so, whole device is still very thick.
The content of the invention
In order to solve the above problems, the invention discloses a kind of vein authentication apparatus and its vein authentication method, Neng Gouyou
Effect reduces the size of vein authentication apparatus.
In order to solve the above technical problems, embodiments of the present invention disclose a kind of vein authentication apparatus, including imaging section,
Image processing part and vena identification portion；
Imaging section includes：
Light irradiation unit, for irradiating vena identification target；
Lens unit, comprising at least two lens, each lens are by transmiting the light wave from vena identification target, to quiet
The subregion of arteries and veins certification target is imaged, wherein, the subregion sum bag of at least two lens imagings in lens unit
Whole vena identification target is contained；
Image acquisition units, for gathering as the first image of the subregion corresponding with the lens of each lens imaging；
The first image that image processing part is used to collect image acquisition units carries out image synthesis processing, and formation includes
Second image of the vein image of vena identification target, and from second image extract vena identification target vein image；
The vein image that vena identification portion is used for the vena identification target based on extraction is authenticated handling.
Whole vena identification target is imaged compared to using single lens, the vein authentication apparatus uses multiple
Mirror, which carries out subregion domain imaging to vena identification target, can reduce object distance required during each lens imaging, quiet so as to effectively reduce
The thickness of arteries and veins authentication device, realize the slimming of whole device.
In a preference, vena identification target includes the tissue with vein distribution, such as finger, palm.
In another preference, the light wave from vena identification target refers to that light irradiation unit is irradiated to vena identification mesh
Not by the light wave reflected of the venous absorption in the vena identification target in target light wave.
In another preference, the first image of image acquisition units collection is the picture of the diminution of corresponding subregion.
By the way of picture is dwindled into, the size of required imaging sensor can be effectively reduced, and then reduces whole vein
The size of authentication device, the miniaturization of realization device.
In another preference, image acquisition units include at least one imaging sensor and the number of imaging sensor is small
In or equal in lens unit lens number, imaging sensor is used for the first image for gathering each lens imaging.
In another preference, the number of imaging sensor is equal to the number of lens in lens unit, and lens and figure
As there is one-to-one relation between sensor.I.e. each lens have the contracting that a proprietary imaging sensor gathers its imaging
Small image.
Whole vena identification target can be included in order to ensure the subregion sum of the lens imaging in lens unit,
There is overlapping region, after being gathered via imaging sensor, it is necessary to overlapping region between first image of lens imaging
The second image is merged into after being handled.
In another preference, imaging section also includes：
IMAQ control unit, for control in the following manner each imaging sensor in image acquisition units to
The collection of one image：
If imaging sensor in image acquisition units be present does not gather corresponding first image, control and do not gather correspondingly
The first image imaging sensor in an imaging sensor carry out the first image collection, and store collect first
Image；
If not gathering corresponding first image in the absence of imaging sensor in image acquisition units, terminate all images
The first IMAQ work of sensor.
In another preference, vena identification target includes finger or palm.
Embodiments of the present invention also disclose a kind of vein authentication method for above-mentioned vein authentication apparatus, this method
Comprise the following steps：
Irradiating step, vena identification target is irradiated using light irradiation unit；
Imaging acquisition step, all subregion of vena identification target is imaged using the lens in imaging section, and led to
The first image that image acquisition part gathers subregion corresponding to each lens is crossed, wherein, at least two lens in lens unit
The subregion sum of imaging contains whole vena identification target；
Image composition step, image synthesis processing is carried out to the first image collected by image processing part, wrapped
Second image of the vein image of the target containing vena identification, and from second image extract vena identification target vein figure
Picture；
Authenticating step, the vein image of the vena identification target of extraction is authenticated handling using vena identification portion.
Whole vena identification target is imaged compared to using single lens, the vein authentication method uses multiple
Mirror, which carries out subregion domain imaging to vena identification target, can reduce object distance required during each lens imaging, quiet so as to effectively reduce
The thickness of arteries and veins authentication device.
Brief description of the drawings
Fig. 1 shows that vein authentication apparatus of the prior art uses the imaging schematic diagram of lens array imaging；
Fig. 2 shows that vein authentication apparatus of the prior art uses the imaging schematic diagram of simple lens imaging；
Fig. 3 is the structural representation of the vein authentication apparatus in first embodiment of the invention；
Fig. 4 is that the vein authentication apparatus in second embodiment of the invention uses the imaging schematic diagram that poly-lens is imaged；
Fig. 5 is that the vein authentication apparatus in second embodiment of the invention uses the imaging schematic diagram that poly-lens is imaged；
Fig. 6 be the vein authentication apparatus in second embodiment of the invention lens unit in lens distribution schematic diagram；
Fig. 7 be the vein authentication apparatus in second embodiment of the invention lens unit in each lens imaging subregion
Distribution map；
Fig. 8 is setting signal of the imaging sensor of the vein authentication apparatus in second embodiment of the invention on substrate
Figure；
Fig. 9 is the collection of the IMAQ control unit control multiple images sensor in second embodiment of the present invention
The schematic diagram of work；
Figure 10 is the IMAQ control unit control imaging sensor collection first in second embodiment of the present invention
The flow chart of the concrete mode of image；
Figure 11 is the schematic flow sheet of the vein authentication method in third embodiment of the present invention.
Embodiment
In the following description, in order that reader more fully understands the present invention and proposes many ins and outs.But this
Even if the those of ordinary skill in field is appreciated that without these ins and outs and many variations based on following embodiment
And modification, each claim technical scheme claimed of the present invention can also be realized.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with implementation of the accompanying drawing to the present invention
Mode is described in further detail.In the record of the following drawings, same or similar reference instruction it is identical or
Similar part and component, and be possible to omit the description.
The first embodiment of the present invention is related to a kind of vein authentication apparatus.Fig. 3 is that the structure of the vein authentication apparatus is shown
It is intended to.Specifically, as shown in figure 3, the vein authentication apparatus includes imaging section, image processing part and vena identification portion.
Imaging section includes：
Light irradiation unit, for irradiating vena identification target.
Lens unit, comprising at least two lens, each lens are by transmiting the light wave from vena identification target, to quiet
The subregion of arteries and veins certification target is imaged, wherein, the subregion sum bag of at least two lens imagings in lens unit
Whole vena identification target is contained.
Image acquisition units, for gathering as the first image of the subregion corresponding with the lens of each lens imaging.
Preferably, the first image of image acquisition units collection is the picture of the diminution of corresponding subregion.
IMAQ control unit, for control in the following manner each imaging sensor in image acquisition units to
The collection of one image：
If imaging sensor in image acquisition units be present does not gather corresponding first image, control and do not gather correspondingly
The first image imaging sensor in an imaging sensor carry out the first image collection, and store collect first
Image；
If not gathering corresponding first image in the absence of imaging sensor in image acquisition units, terminate all images
The first IMAQ work of sensor.
The first image that image processing part is used to collect image acquisition units carries out image synthesis processing, and formation includes
Second image of the vein image of vena identification target, and from second image extract vena identification target vein image.
The vein image that vena identification portion is used for the vena identification target based on extraction is authenticated handling.
Preferably, in the present embodiment, above-mentioned image acquisition units include at least one imaging sensor and image passes
The number of sensor is less than or equal to the number of lens in lens unit, and imaging sensor is used to gather the first of each lens imaging
Image.
Furthermore, it is to be understood that in the embodiments of the present invention, vena identification target includes the people with vein distribution
Body tissue, such as finger, palm.Light wave from vena identification target refers to that light irradiation unit is irradiated to vena identification target
Light wave in not by the light wave reflected of the venous absorption in the vena identification target.Preferably, in the present embodiment,
Vena identification target includes finger or palm.
Furthermore, it is to be understood that in the embodiments of the present invention, in order to ensure the lens imaging in lens unit
Subregion sum can include whole vena identification target, there is overlapping region between the first image of lens imaging,
, it is necessary to be merged into the second image after handling overlapping region after being gathered via imaging sensor.
In addition, in the embodiments of the present invention, by the way of picture is dwindled into, it can effectively reduce required image and pass
The size of sensor, and then reduce the size of whole vein authentication apparatus, the miniaturization of realization device.
In the other embodiment of the present invention, all imaging sensors can also be used to gather the side of the first image simultaneously
Formula.
Whole vena identification target is imaged compared to using single lens, using multiple lens to vena identification mesh
Mark, which carries out subregion domain imaging, can reduce object distance required during each lens imaging, so as to effectively reduce the thickness of vein authentication apparatus
Degree, realizes the slimming of whole device.
Second embodiment of the present invention is related to a kind of vein authentication apparatus.The embodiment is above-mentioned first embodiment
A kind of preferred embodiment, specifically, in this embodiment, the number of imaging sensor is equal to lens in lens unit
Number, and there is one-to-one relation between lens and imaging sensor.I.e. each lens have a proprietary image to pass
Sensor gathers the downscaled images of its imaging.With six lens and six imaging sensors, certification target is the implementation exemplified by finger
The specific implementation of mode is as follows：
Fig. 4 and Fig. 5 be shoot finger vein image when side view, Fig. 4 be shooting area long side side view, Fig. 5
For the side view of shooting area short side.As can be known from Fig. 4, the region (as shown in figure 5, width is b) for being a for shooting length,
Three sub-regions be divide into carry out, the length of each subregion is a', is imaged in after the single lens by lens unit 30
On the imaging sensor of image acquisition units 40, as size be a3 (as shown in figure 5, width is b3).The shooting area of each lens
Domain exists overlapping, and the image of lap can be used and removed in the splicing of complete image.
Here, (a3 is passed given data when each length a' of the zonule and size a3 of picture designs for device with image
The size of sensor is relevant), therefore understand that enlargement ratio is：
K=a3/a'
Using above-mentioned enlargement ratio and the focal length of lens, can obtain object distance u, image distance v and object distance in lens imaging with
Image distance sum is respectively：
U=(1+1/K) * f
V=(K+1) * f
U+v=(2+K+1/K) * f
For example, in the present embodiment according to the distance of object distance and image distance be u+v be 5 millimeters, enlargement ratio be K be 0.5, so that it may
To calculate the focal length f of required lens.Bring multiplication factor into above-mentioned formula, then
U+v=4.5*f
If realized using Fig. 2 prior art, it is assumed that：
A=3*a'
A2=a3
Then enlargement ratio now：
K'=K/3=0.167
If using with the present embodiment Fig. 3 identical lens, i.e. the focal length f of lens is identical, and we can obtain：
U'+v'=(2+K'+1/K') * f
=8.167*f
=1.81* (u+v)
I.e. the embodiment of Fig. 2 prior arts will be thicker than the scheme of the present embodiment 1.81 times under these conditions.
Although can ideally be calculated based on above-mentioned formula, also need to examine in lens design process
The bright when factor such as Lens image deformation is considered, and therefore, it is very difficult to accurately calculate relevant parameter based on simple formula.No
Cross, can easily calculate corresponding parameter with the special-purpose software emulated by using the design of lens, the application is relative
In improvement of the prior art in terms of whole thickness be still considerable.
Fig. 6 is the distribution schematic diagram of lens in lens unit 30, it can be seen that 6 of two rows three row have been made in framework
Lens 31~36, the manufacture craft of specific lens can as needed and technical difficulty designs.
Fig. 7 is the distribution map of the subregion of each lens imaging in lens unit 30, and the broken circle represented by 61~66 is
The region that mirror 31~36 can photograph, from here it can be seen that region captured by each lens occur it is overlapping, for overlay region
Complete image can be removed divided by formed in domain when later image is handled overlapping region.
Fig. 8 is setting schematic diagram of the imaging sensor on substrate, 41~46 each sensor and 31~36 lens one
One correspondence, each several part of finger vena are imaged on 41~46 imaging sensor by lens 31~36.As shown in figure 8, by
When each imaging sensor is set onto substrate in the reason for the chip package, certain interval is had between imaging sensor.
In the present embodiment, Fig. 9 is showing for the collecting work that IMAQ control unit controls multiple images sensor
It is intended to, 41~46 be 6 imaging sensors, and 118 be the peripheral control that IMAQ control unit controls image working sensor
Circuit, 118 control the relevant work of imaging sensor 41~46 by switch 117.By peripheral control circuits 118, each figure
As sensor can be connected with the software entity of IMAQ control unit, such as computer CPU 119, the setting to chip is realized
And the transmission of view data.That is, at this, IMAQ control unit is (outer with software (programmed instruction in such as CPU) and hardware
Enclose control circuit 118) mode that is combined realizes.It is appreciated that in the other embodiment of the present invention, IMAQ control
The realization of unit can also be realized by way of other software, hardware or software and hardware combining, not be limited herein.
Figure 10 is the flow chart for the concrete mode that IMAQ control unit controls imaging sensor the first image of collection.Tool
Body is as follows：
After system operation, S121 Initialize installations imaging sensor 41~46, then, S122 wait finger venous image to clap
Take the photograph request or system finishing.When there is finger vena photographing request, S124 starts to perform.Set image sensor operation suitable first
The initial value i of sequence；S125 sets i-th of imaging sensor to start working.After i-th of imaging sensor start-up operation in S126
Vision sensor data is read in into internal memory and preserved.After i-th of vision sensor data obtains, S127 sets i-th of image to pass
Sensor is out of service, waits shooting request next time.The order of S128 renewal operation imaging sensors, and judged by S129
Whether the data of 6 imaging sensors, which have been read, finishes, if also finished without reading, goes to S125 and continues to next
Individual imaging sensor is operated, and is finished if the data of 6 imaging sensors are all read, and S122 continues waiting for system please
Ask, if S123 judges that current task terminates when having system finishing request.
After the image of 6 imaging sensors of acquirement, the image composition algorithm that there is currently can be used, to acquired portion
Partial image is synthesized.By extracting the pattern of finger vena in image, then with having logged in the data of finger vena in system
Contrasted, so that it may complete the identity validation of operator.
Furthermore, it is to be understood that in the other embodiment of the present invention, control of the image acquisition units to imaging sensor
Other modes can also be used, being not necessarily to sequential control, it gathers view data.For example, control all imaging sensors same
When gather view data, or randomly select the imaging sensor of non-gathered data and be operated.
Furthermore, it is to be understood that in the present embodiment, in lens unit the arrangement of lens be not limited in above-mentioned 3 × 2
Form.Number of lenses can also be other numerals.For example, 3 lens, correspondingly, image acquisition units are included in lens unit
Include 3 imaging sensors.
Furthermore, it is to be understood that in the other embodiment of the present invention, number of lenses and imaging sensor number can phases
Together can also be different, for example, the corresponding relation of lens number and arrangement mode and imaging sensor is as shown in the table：
| Lens number | Lens arrangement | Imaging sensor number | Imaging sensor arrangement mode |
| 6 | 3x2 | 6 | 3x2 |
| 6 | 3x2 | 3 | 3x1 |
| 4 | 2x2 | 4 | 2x2 |
| 4 | 2x1 | 2 | 2x1 |
| 3 | 3x1 | 3 | 3x1 |
| 3 | 3x1 | 1 | 1x1 |
| 2 | 2x1 | 2 | 2x1 |
| 2 | 2x1 | 1 | 1x1 |
It is appreciated that in above table numeral for illustration purposes only and set, can basis in concrete application
Actual conditions set relative number and arrangement mode.
Present embodiment is a concrete application embodiment of first embodiment, and present embodiment can be implemented with first
Mode is worked in coordination implementation.The relevant technical details mentioned in first embodiment are still effective in the present embodiment, in order to
Reduce and repeat, repeat no more here.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in the first implementation
In mode.
The vein that third embodiment of the present invention is related to the vein authentication apparatus for the embodiments of the present invention is recognized
Card method.Figure 11 is the schematic flow sheet of the authentication method.Specifically, as shown in figure 11, this method comprises the following steps：
In irradiating step 1101, vena identification target is irradiated using light irradiation unit.
Imaging acquisition step 1102, all subregion of vena identification target is imaged using the lens in imaging section,
And the first image of subregion corresponding to each lens is gathered by image acquisition part, wherein, at least two in lens unit
The subregion sum of lens imaging contains whole vena identification target；
Image composition step 1103, image synthesis processing is carried out to the first image collected by image processing part, obtained
To the second image of the vein image comprising vena identification target, and from second image extract vena identification target vein
Image；
Authenticating step 1104, the vein image of the vena identification target of extraction is authenticated locating using vena identification portion
Reason.
First embodiment and second embodiment are the device embodiments corresponding with present embodiment, this embodiment party
Formula can work in coordination implementation with first embodiment or second embodiment.Mentioned in first embodiment or second embodiment
Relevant technical details in the present embodiment still effectively, in order to reduce repetition, repeat no more here.Correspondingly, this implementation
The relevant technical details mentioned in mode are also applicable in first embodiment or second embodiment.
In addition, each method embodiment of the present invention is embodied as：Each list of vein authentication apparatus is controlled by programmed instruction
Member realizes corresponding operation, by the way of software and hardware combining.Wherein, instruction code may be stored in any kind of calculating
In the addressable memory of machine (such as it is permanent or revisable, it is volatibility or non-volatile, it is solid-state or non-
Solid-state, fixed or replaceable medium etc.).Equally, memory may, for example, be random access memory (Random
Access Memory, referred to as " RAM "), programmable read only memory (Programmable Read Only Memory, referred to as
" PROM "), read-only storage (Read-Only Memory, referred to as " ROM "), Electrically Erasable Read Only Memory
(Electrically Erasable Programmable ROM, referred to as " EEPROM "), disk, CD, digital versatile disc
(Digital Versatile Disc, referred to as " DVD ") etc..
It should be noted that in the claim and specification of this patent, such as first and second or the like relation
Term is used merely to make a distinction an entity or operation with another entity or operation, and not necessarily requires or imply
Any this actual relation or order be present between these entities or operation.Moreover, term " comprising ", "comprising" or its
Any other variant is intended to including for nonexcludability so that process, method, article including a series of elements or
Equipment not only includes those key elements, but also the other element including being not expressly set out, or also include for this process,
Method, article or the intrinsic key element of equipment.In the absence of more restrictions, wanted by what sentence " including one " limited
Element, it is not excluded that other identical element in the process including the key element, method, article or equipment also be present.
Although by referring to some of the preferred embodiment of the invention, the present invention is shown and described,
It will be understood by those skilled in the art that can to it, various changes can be made in the form and details, without departing from this hair
Bright spirit and scope.
Claims (7)
1. a kind of vein authentication apparatus, it is characterised in that including imaging section, image processing part and vena identification portion；
The imaging section includes：
Light irradiation unit, for irradiating vena identification target；
Lens unit, comprising at least two lens, each lens by transmiting the light wave from the vena identification target,
The subregion of the vena identification target is imaged, wherein, at least two lens imagings in the lens unit
Subregion sum contains the whole vena identification target；
Image acquisition units, for gathering as the first image of the subregion corresponding with the lens of each lens imaging；
The described first image that described image processing unit is used to collect described image collecting unit carries out image synthesis processing,
The second image of the vein image comprising the vena identification target is formed, and the vena identification is extracted from second image
The vein image of target；
The vein image that the vena identification portion is used for the vena identification target based on extraction is authenticated handling.
2. vein authentication apparatus as claimed in claim 1, it is characterised in that described the first of described image collecting unit collection
Image is the picture of the diminution of the corresponding subregion.
3. vein authentication apparatus as claimed in claim 2, it is characterised in that described image collecting unit includes at least one figure
As the number of sensor and described image sensor is less than or equal to the number of lens in the lens unit, described image sensing
Device is used for the described first image for gathering each lens imaging.
4. vein authentication apparatus as claimed in claim 3, it is characterised in that the number of described image sensor is equal to described
The number of lens in mirror unit, and there is one-to-one relation between the lens and described image sensor.
5. the vein authentication apparatus as described in claim 3 or 4, it is characterised in that the imaging section also includes：
IMAQ control unit, for control in the following manner each imaging sensor in described image collecting unit to institute
State the collection of the first image：
If exist in image acquisition units imaging sensor do not gather corresponding to the first image, control the corresponding to not gathering
An imaging sensor in the imaging sensor of one image carries out the collection of the first image, and stores described first collected
Image；
If not gathering corresponding first image in the absence of imaging sensor in image acquisition units, terminate all image sensings
The first IMAQ work of device.
6. the vein authentication apparatus as any one of Claims 1-4, it is characterised in that the vena identification target bag
Include finger or palm.
7. a kind of vein authentication method of vein authentication apparatus for any one of claim 1 to 6, its feature exist
In comprising the following steps：
Irradiating step, the vena identification target is irradiated using the light irradiation unit；
Imaging acquisition step, all subregion of the vena identification target is imaged using the lens in the imaging section,
And the first image of subregion corresponding to each lens is gathered by image acquisition part, wherein, in the lens unit at least
The subregion sum of two lens imagings contains the whole vena identification target；
Image composition step, image synthesis processing is carried out to the described first image collected by image processing part, wrapped
Second image of the vein image containing the vena identification target, and the vena identification target is extracted from second image
Vein image；
Authenticating step, the vein image of the vena identification target of extraction is authenticated locating using the vena identification portion
Reason.
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|---|---|---|---|
| CN201610538436.5A CN107590425A (en) | 2016-07-08 | 2016-07-08 | Vein authentication apparatus and its vein authentication method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610538436.5A CN107590425A (en) | 2016-07-08 | 2016-07-08 | Vein authentication apparatus and its vein authentication method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108537173A (en) * | 2018-03-06 | 2018-09-14 | 东莞市宇光光电科技有限公司 | Bio-identification optical module and device |
| CN109564338A (en) * | 2018-11-08 | 2019-04-02 | 深圳市汇顶科技股份有限公司 | Lens group, fingerprint identification device and electronic equipment |
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