CN107633243A - A kind of iris imaging device and information acquisition system - Google Patents
A kind of iris imaging device and information acquisition system Download PDFInfo
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- CN107633243A CN107633243A CN201711107612.0A CN201711107612A CN107633243A CN 107633243 A CN107633243 A CN 107633243A CN 201711107612 A CN201711107612 A CN 201711107612A CN 107633243 A CN107633243 A CN 107633243A
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Abstract
A kind of iris imaging device provided by the invention and information acquisition system, it is related to iris recognition technology field, including imaging unit and control unit；Control unit electrically connects with imaging unit, for controlling imaging unit to obtain iris recognition information；Imaging unit includes multiple cameras with the different depth of field, and is arranged in order setting by multiple cameras to form multiple different focusing planes.In the above-mentioned technical solutions, using control unit the camera after multiple arrangements can be controlled to obtain the iris recognition information of user, multiple cameras are enable to cooperate, the multiple focusing planes that can successfully obtain client iris identification information that the multiple cameras with the different depth of field combined are formed will collectively constitute a solid region that can successfully obtain client iris identification information, what this three-dimensional region can expand iris recognition information obtains scope, so as to improve the efficiency of iris recognition information acquisition.
Description
Technical field
The present invention relates to iris recognition technology field, more particularly, to a kind of iris imaging device and information gathering system
System.
Background technology
In biometrics identification technology field, iris recognition technology be most precisely with safest biological identification technology it
One, the extraction of iris image is to carry out the premise of iris recognition, because the positioning of iris is one extremely difficult during collection iris
Thing, so most of iris collection devices are all acquired by the way of static, such as fixed human eye distance and fixed
Focal length, such mode are very inconvenient in actual applications.
A kind of improved method is to use from the method for motion tracking to position iris：By the cloud platform rotation for controlling rotation up and down
Iris video camera is continuously taken pictures and the locating human face by way of recognition of face, then positions human eye substantially from facial image
Position, then catch by autozoom the picture rich in detail of iris.
Although this method can dynamically extract iris, iris is searched for by moving up and down video camera, it is past
It is slow toward picking rate, generally require 5 to 10 seconds, be not suitable for the scene of some quick identifications.
The content of the invention
It is an object of the invention to provide a kind of iris imaging device and information acquisition system, to solve in the prior art
The existing technical problem that can not quickly carry out iris information extraction.
A kind of iris imaging device provided by the invention, including imaging unit and control unit；Described control unit and institute
Imaging unit electrical connection is stated, for controlling the imaging unit to obtain iris recognition information；
The imaging unit includes multiple cameras with the different depth of field, and is arranged in order by multiple cameras
Set and form multiple different focusing planes.
In the above-mentioned technical solutions, in order to quickly obtain the iris recognition information of user, so employ simultaneously
Multiple cameras with the different depth of field, by it is multiple with the different depth of field cameras rule arrangement, by for different scapes
The position of camera is set deeply, so that after multiple cameras with the different depth of field are combined, formation is more respectively
Individual focusing plane.
When obtaining the iris recognition information of user, described control unit can be utilized to control the shooting after multiple arrangements
Head obtains to the iris recognition information of user, the acquisition work for carrying out iris recognition information for enabling multiple cameras to cooperate with
Make, like this, what the multiple cameras with the different depth of field combined were formed can successfully obtain client iris
Multiple focusing planes of identification information will collectively constitute a solid region that can successfully obtain client iris identification information, this
What three-dimensional region can expand iris recognition information obtains scope, so as to improve the efficiency of iris recognition information acquisition.
Further, in an embodiment of the present invention, the object distance distance gradually increase of multiple focusing planes.
In the above-mentioned technical solutions, allow camera can by can make focusing plane object distance distance gradually increase in the way of come
Arrangement, it may be determined that the acquisition rule of the iris recognition information of whole iris imaging device, more conducively iris imaging device are adopted
Collection operation.
Further, in an embodiment of the present invention, the object distance distance of multiple focusing planes is gradually increased with arithmetic progression
Greatly.
In the above-mentioned technical solutions, allow camera can be according to the object distance distance of focusing plane can be made gradually to increase with arithmetic progression
Big mode arranges, and can further determine the acquisition rule of the iris recognition information of whole iris imaging device, can be with
The further acquisition operations for being beneficial to iris imaging device.
Further, in an embodiment of the present invention, described control unit electrically connects with the imaging unit, for controlling
Multiple cameras with the different depth of field of the imaging unit are imaged or are partitioned into picture simultaneously.
In the above-mentioned technical solutions, adopting for iris recognition information can be improved by the way of being imaged or being partitioned into simultaneously picture
Collect efficiency.
Further, in an embodiment of the present invention, the iris imaging device also includes at least one light source group；
The light source group electrically connects with described control unit.
In the above-mentioned technical solutions, the brightness of collection environment can be improved using light source group, improves iris recognition information
Acquisition quality.
It is selectable, in an embodiment of the present invention, light source group include infrared light supply and or visible light source.
Further, in an embodiment of the present invention, the light source of the different light source groups is arranged to have different divergings
Angle.
In the above-mentioned technical solutions, targetedly can be carried using the light source group of different dispersion angles for different focusing planes
For light source, the collecting efficiency of iris recognition information is improved.
Selectable, in an embodiment of the present invention, the camera includes lens group, imaging sensor, circuit board base
Bottom and lens mount；
Described image sensor is connected in the circuit board substrate, and the lens group is electrically connected with described image sensor
Connect.
Further, in an embodiment of the present invention, the lens group is fixed on the circuit board by the lens mount
In substrate.
Further, in an embodiment of the present invention, multiple cameras have different focal lengths.
In the above-mentioned technical solutions, the stability of the connection of lens group can be improved using the lens mount.
Present invention also provides a kind of information acquisition system, including the iris imaging device.
In the above-mentioned technical solutions, because described information acquisition system employs the iris imaging device, so entering
In the gatherer process of row iris recognition information, it becomes possible to control the camera after multiple arrangements to user using described control unit
Iris recognition information obtained, enable the acquisition work for the progress iris recognition information that multiple cameras cooperate with, so
If, what multiple cameras with the different depth of field for combining were formed can successfully obtain client iris identification information
Multiple focusing planes will collectively constitute a solid region that can successfully obtain client iris identification information, this three-dimensional area
What domain can expand iris recognition information obtains scope, so as to improve the efficiency of iris recognition information acquisition.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the imaging effect top view for the camera that one embodiment of the invention provides；
Fig. 2 is the arrangement schematic diagram for the camera that one embodiment of the invention provides；
Fig. 3 is the structural representation for the iris imaging device that one embodiment of the invention provides；
Fig. 4 is the structural representation for the camera that one embodiment of the invention provides.
Reference：
100- cameras；200- control units；300- light source groups；
1001- lens groups；1002- imaging sensors；1003- circuit board substrates；1004- lens mounts.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Fig. 1 is the imaging effect top view for the camera 100 that one embodiment of the invention provides；Fig. 2 is of the invention one
The arrangement schematic diagram for the camera 100 that embodiment provides.
First, as depicted in figs. 1 and 2, a kind of iris imaging device that the present embodiment provides, including imaging unit and control
Unit 200；Described control unit 200 electrically connects with the imaging unit, for controlling the imaging unit to obtain iris recognition
Information.
Wherein, the imaging unit includes multiple cameras 100 with the different depth of field, and passes through multiple cameras
100 are arranged in order setting and form multiple different focusing planes.
In the above-mentioned technical solutions, in order to quickly obtain the iris recognition information of user, so employ simultaneously
Multiple cameras 100 with the different depth of field, by the arrangement of multiple rules of cameras 100 with the different depth of field, by for
The different depth of field set the position of camera 100 so that multiple cameras 100 with the different depth of field combine with
Afterwards, multiple focusing planes are formed respectively.
When obtaining the iris recognition information of user, after multiple arrangements can be controlled using described control unit 200
Camera 100 obtains to the iris recognition information of user, the carry out iris recognition letter for enabling multiple cameras 100 to cooperate with
The acquisition work of breath, like this, what the multiple cameras 100 with the different depth of field combined were formed can succeed
Multiple focusing planes of acquisition client iris identification information, which will collectively constitute one, can successfully obtain client iris identification information
Solid region, what this three-dimensional region can expand iris recognition information obtains scope, is obtained so as to improve iris recognition information
The efficiency taken.
With reference to figure 1, for clearer elaboration technical scheme, now by taking the combinations of three cameras 100
Mode is specifically illustrated：
With reference to Fig. 2, the camera 100 can arrange in the way of transversely or longitudinally, can set camera 100
Put in the same plane, and make multiple cameras 100 towards same direction.
Wherein, multiple cameras 100 can be set along transversely arranged, forms a kind of combination, each camera 100 can be with
Arranged with identical interval X；
Similarly, multiple cameras 100 can be set along longitudinal arrangement, forms a kind of combination, each camera 100 can be with
Arranged with identical interval Y.
But specific spread pattern does not do specific restriction herein, those skilled in the art can be according to actual feelings
Condition is set.
It should be noted that adjusted due to the depth of field of camera 100 generally by aperture and focal length, above-mentioned difference
The camera 100 of the depth of field can be set using at least three kinds of modes：
First, make different cameras 100 that there is the different depth of field using different apertures；
Second, make different cameras 100 that there is the different depth of field using different focal lengths；
Third, make different cameras 100 that there is different scapes by the way of different aperture and focal length are combined
It is deep.
In addition, in an embodiment of the present invention, multiple cameras 100 have a different focal lengths, the difference of the focal length,
In addition to the adjustment depth of field that can be alone or synergistically, its also have an important effect be exactly be used for adjust can shooting distance,
Because the collection of iris recognition information needs the picture size gathered and picture quality to be satisfied by requiring, by with not
With focal length camera 100 just can adjust can shooting distance, can control within the scope of demand, to collect
Picture size and picture quality are satisfied by desired image information.
With continued reference to Fig. 1, schematically illustrated in Fig. 1 by way of the transversely arranged formation combination of three cameras 100, due to not
With camera 100 possessed by the depth of field be different, so, the combining structure formed by three cameras 100 can be with
Three focusing planes are formed respectively, as shown in Figure 1, three cameras 100 correspond to focusing plane 1, focusing plane 2 and focusing plane 3 respectively, point
Three object distances of object distance 1, object distance 2 and object distance 3 are not correspond to apart from (object distance distance is represented between camera 100 and focusing plane
Distance).
So when iris recognition information is acquired, it is possible to completed by three focusing planes to client iris
Shooting and gather iris recognition information, like this, the scope that user can shoot will increase therewith, pair in suitable distance
Focal plane just corresponding can collect clearly iris recognition information.
With continued reference to Fig. 1, in an embodiment of the present invention, the object distance distance of multiple focusing planes gradually increases, so,
Camera 100 can be arranged in the way of the object distance distance that can make focusing plane gradually increases, it is possible to it is determined that whole rainbow
The acquisition rule of the iris recognition information of film imaging device, for example, multiple cameras 100 of formation combination shoot focusing plane
Be according to from transverse direction, i.e., what order (order from top to bottom in corresponding diagram 1) from left to right increased successively, that is, prove from a left side
(from top to bottom) to the right side can be obtained apart from farther iris recognition information, otherwise similarly, and then more conducively iris imaging fills
The acquisition operations put.
With continued reference to Fig. 1, in an embodiment of the present invention, the object distance distance of multiple focusing planes is gradual with arithmetic progression
Increase, it becomes possible to the acquisition rule of the iris recognition information of whole iris imaging device is further determined, for example, forming combination
Multiple cameras 100 shoot focusing plane if according to order (from top to bottom suitable in corresponding diagram 1 from left to right
Sequence) increase successively, and the increase distance of adjacent camera 100 is fixed, you can to prove the shooting using the combination
During first 100 acquisition iris recognition information, how to adjust and more accurately can be corresponded to the distance of camera 100 on focusing plane,
So it can further be beneficial to the acquisition operations of iris imaging device.
Further, in an embodiment of the present invention, described control unit 200 electrically connects with the imaging unit, is used for
Control multiple cameras 100 with the different depth of field of the imaging unit while be imaged or be partitioned into picture.
Wherein, if multiple cameras 100 with the different depth of field are imaged simultaneously, you can so that user is in what can be shot
Within the scope of, then shooting, collecting, suitable camera 100 can photograph suitable image to multiple cameras 100 simultaneously, and then
Obtain iris recognition information；
If multiple cameras 100 with the different depth of field are partitioned into picture, you can control multiple take the photograph using control unit 200
It is imaged respectively with default rule as first 100, once imaging results prove that the iris recognition information collection of user finishes, you can with
The collecting work of other cameras 100 need not be carried out again.
Both the above mode can use according to the situation specific aim of reality.
Fig. 3 is the structural representation for the iris imaging device that one embodiment of the invention provides.
As shown in figure 3, in an embodiment of the present invention, the iris imaging device also includes at least one light source group 300；
The light source group 300 electrically connects with described control unit 200.
In the above-mentioned technical solutions, using light source group 300 camera 100 can be cooperateed with to complete to iris recognition information
Collection.
It is selectable, in an embodiment of the present invention, light source group 300 include infrared light supply and or visible light source.
Wherein, it is seen that light source can improve the brightness of collection environment, and infrared light supply can improve the acquisition quality of iris.
With continued reference to Fig. 1, in an embodiment of the present invention, the light source of the different light source groups 300 is arranged to have difference
Dispersion angle, namely the angle that light source comes out.
In Fig. 1, formed with reference to above-mentioned using three longitudinal arrangements of camera 100 in the embodiment of the mode combined, can
To set three light source groups 300, three cameras 100 are corresponded to respectively, can be with by using the light source group 300 of different dispersion angles
Light source targetedly is provided for different focusing planes, improves the collecting efficiency of iris recognition information.
Wherein, angle 1, angle 2 and angle 3 are able to correspond in focusing plane 1, focusing plane 2 and focusing plane 3, by Fig. 1
Understand, the angle of angle is bigger, its can irradiation distance it is shorter.
Fig. 4 is the structural representation for the camera 100 that one embodiment of the invention provides.
As shown in figure 4, in an embodiment of the present invention, the camera 100 includes lens group 1001, imaging sensor
1002nd, circuit board substrate 1003 and lens mount 1004.
Wherein, described image sensor 1002 is connected in the circuit board substrate 1003, the lens group 1001 and institute
Imaging sensor 1002 is stated to electrically connect.
After camera 100 acquires image information, imaging sensor 1002 can be transferred to, passes through imaging sensor
Circuit board substrate 1003 is sent to after 1002 processing, carries out the processing work of next step.
Further, in an embodiment of the present invention, the lens group 1001 is fixed on institute by the lens mount 1004
State in circuit board substrate 1003, the stability of the connection of lens group 1001 can be improved using the lens mount 1004.
Present invention also provides a kind of information acquisition system, including the iris imaging device.
Because the concrete structure of the iris imaging device, the principle of work and power and technique effect are in detailed hereinbefore,
This is just repeated no more.
So any technology contents for being related to the iris imaging device, refer to above for the iris into
As the record of device.
In summary, because described information acquisition system employs the iris imaging device, so carrying out iris knowledge
In the gatherer process of other information, it becomes possible to control the camera 100 after multiple arrangements to user's using described control unit 200
Iris recognition information is obtained, the acquisition work for carrying out iris recognition information for enabling multiple cameras 100 to cooperate with, so
If, what multiple cameras 100 with the different depth of field for combining were formed can successfully obtain client iris identification
Multiple focusing planes of information will collectively constitute a solid region that can successfully obtain client iris identification information, this solid
Region can expand iris recognition information obtain scope, so as to improve the efficiency of iris recognition information acquisition.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of iris imaging device, it is characterised in that including imaging unit and control unit (200)；Described control unit
(200) electrically connected with the imaging unit, for controlling the imaging unit to obtain iris recognition information；
The imaging unit includes multiple cameras (100) with the different depth of field, and by multiple cameras (100) according to
Secondary spread configuration and form multiple different focusing planes.
2. iris imaging device according to claim 1, it is characterised in that the object distance distance of multiple focusing planes is gradually
Increase.
3. iris imaging device according to claim 2, it is characterised in that the object distance distance of multiple focusing planes with etc.
Difference series gradually increase.
4. iris imaging device according to claim 1, it is characterised in that described control unit (200) and the imaging
Unit electrically connect, for control the imaging unit multiple cameras (100) with the different depth of field and meanwhile be imaged or
It is divided into picture.
5. iris imaging device according to claim 1, it is characterised in that also including at least one light source group (300)；
The light source group (300) electrically connects with described control unit (200).
6. iris imaging device according to claim 5, it is characterised in that light source group (300) include infrared light supply and or
Visible light source.
7. iris imaging device according to claim 5, it is characterised in that the light source of the different light source groups (300) is set
It is set to different dispersion angles.
8. iris imaging device according to claim 1, it is characterised in that the camera (100) includes lens group
(1001), imaging sensor (1002), circuit board substrate (1003) and lens mount (1004)；
Described image sensor (1002) is connected in the circuit board substrate (1003), the lens group (1001) and the figure
As sensor (1002) electrical connection.
9. iris imaging device according to claim 1, it is characterised in that multiple cameras (100) have difference
Focal length.
10. a kind of information acquisition system, it is characterised in that filled including iris imaging as claimed in any one of claims 1-9 wherein
Put.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711107612.0A CN107633243A (en) | 2017-11-10 | 2017-11-10 | A kind of iris imaging device and information acquisition system |
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|---|---|---|---|
| CN201711107612.0A CN107633243A (en) | 2017-11-10 | 2017-11-10 | A kind of iris imaging device and information acquisition system |
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ID=61108445
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| CN108446648A (en) * | 2018-03-26 | 2018-08-24 | 北京上古视觉科技有限公司 | A kind of iris capturing system and iris authentication system |
| CN110166712A (en) * | 2018-02-10 | 2019-08-23 | 上海聚虹光电科技有限公司 | Picture selection method based on depth of field superposition camera module |
| CN110251077A (en) * | 2019-01-30 | 2019-09-20 | 北京大学第三医院（北京大学第三临床医学院） | A kind of ophthalmology camera arrangement and ophthalmology photographic method |
| CN110691198A (en) * | 2018-07-05 | 2020-01-14 | 杭州海康威视数字技术股份有限公司 | Infrared lamp control method and device and electronic equipment |
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