CN207965914U - A kind of iris capturing system and iris authentication system - Google Patents
A kind of iris capturing system and iris authentication system Download PDFInfo
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- CN207965914U CN207965914U CN201820415085.3U CN201820415085U CN207965914U CN 207965914 U CN207965914 U CN 207965914U CN 201820415085 U CN201820415085 U CN 201820415085U CN 207965914 U CN207965914 U CN 207965914U
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Abstract
This application provides a kind of iris capturing system and iris authentication systems, including：Controller, light source group and camera group；Light source group and camera group are connect with controller respectively, and controller is additionally operable to connect with processor；Camera group includes at least two iris cameras, and the focusing field of view of at least two iris cameras is different；Iris camera includes at least one camera lens, and camera lens includes aperture；The remote iris camera of field of view of focusing is equipped with the focal length of camera lens and aperture is more than focal length and aperture that the close iris camera of focusing field of view is equipped with camera lens；Light source group includes at least two infrared light supplies, each infrared light supply has at least one dispersion angle；Controller, for controlling at least two infrared source workings and the work of at least one iris camera, the coverage area in the different iris camera adjustment Depth of field region of logical a plurality of lenses parameter, reduces the cooperation difficulty of acquisition iris image information user, facilitates acquisition iris image.
Description
Technical field
This application involves image acquisition technology fields, in particular to a kind of iris capturing system and iris recognition system
System.
Background technology
In field of biological recognition, iris recognition technology has higher compared to fingerprint identification technology and face recognition technology
Accuracy, still, due to iris image acquiring difficulty, the popularization of iris recognition technology is high.
Iris dimensions are about 1cm or so, and texture-rich needs the iris image acquired straight in iris recognition technology
Diameter pixel number is more than 160 pixels and just quality can extract iris feature very well, therefore, in order to ensure the iris image of acquisition
Pixel number and picture quality are met the requirements, and are currently provided a kind of iris capturing system, are used taking the photograph for certain optical systems parameter
As head, the optical system parameter of camera determines the acquisition field of view region distance range of the camera, using above system into
When the iris image acquiring of row user, user needs to enter in the corresponding field range of camera in system, and height coordinates
Camera could acquire the iris image information of user, and subsequent iris recognition is carried out to be based on the iris image information.
But the corresponding field of view distance range of the camera of certain optical systems parameter in above-mentioned iris capturing system
Very little and fixed, improves the cooperation difficulty of the user when carrying out iris image information acquisition, is unfavorable for iris image information
Acquisition.
Utility model content
In view of this, the embodiment of the present application is designed to provide a kind of iris capturing system and iris authentication system, energy
Enough lead to the coverage area that the different camera adjustment of multiple optical system parameters carries out the acquisition distance of iris image information acquisition,
The cooperation difficulty for reducing acquisition iris image information user, facilitates the acquisition of iris image information.
In a first aspect, the embodiment of the present application provides a kind of iris capturing system, including：Controller, light source group and camera shooting
Head group；The light source group and the camera group are connect with the controller respectively, and the controller is additionally operable to connect with processor
It connects；The camera group includes at least two iris cameras, and the focusing field of view of at least two irises camera
It is different；The iris camera includes at least one camera lens, and the camera lens includes aperture；The remote iris camera shooting of field of view of focusing
Head is equipped with the focal length of camera lens and aperture is more than focal length and aperture that the close iris camera of focusing field of view is equipped with camera lens；It is described
Light source group includes at least two infrared light supplies, each described infrared light supply has at least one dispersion angle；
The controller, for controlling at least two infrared light supply at least one dispersion angle to described at least two
The corresponding focusing field of view of a iris camera emits infrared light；And control at least one iris camera acquisition
Iris image information in the corresponding focusing field of view of optical system parameter of itself.
With reference to first aspect, the embodiment of the present application provides the first possible embodiment of first aspect, wherein institute
The iris capturing system stated, further includes range unit；The range unit is connect with the controller；
The controller detects the iris capturing system specifically for the control range unit and believes at a distance from user
Breath, and the range information returned according to the range unit, control the focusing field of view pair where the range information
The first object iris camera acquisition iris image information answered.
With reference to first aspect, the embodiment of the present application provides second of possible embodiment of first aspect, wherein institute
State iris cam lens pedestal；The camera lens is fixed on the lens base.
Second of possible embodiment with reference to first aspect, the embodiment of the present application provide the third of first aspect
Possible embodiment, wherein the iris camera further includes：Focusing motor and imaging sensor；Described image sensor
It is connect with the controller with the focusing motor；
The controller is additionally operable to control camera lens and the figure described in the focusing motor adjustment iris camera
As the distance of sensor, the focusing visual field of the iris camera is adjusted with the focusing plane by adjusting the iris camera
The clarity of the iris image of region and acquisition.
The third possible embodiment with reference to first aspect, the embodiment of the present application provide the 4th kind of first aspect
Possible embodiment, wherein the iris camera further includes circuit board；Described image sensor is fixed on the circuit
On substrate, the camera lens is fixed on the burnt motor.
The third possible embodiment with reference to first aspect, the embodiment of the present application provide the 5th kind of first aspect
Possible embodiment, wherein acquire the imaging sensor being equipped with apart from remote iris camera resolution ratio be more than acquisition away from
Resolution ratio from the imaging sensor that close iris camera is equipped with.
The possible embodiment of with reference to first aspect the first, the embodiment of the present application provide the 6th kind of first aspect
Possible embodiment, wherein the range unit includes face camera；The face camera connects with the controller
It connects；
The face camera, the facial image in focusing field of view for acquiring itself, and by the face figure
As being sent to the controller；
The controller determines that user adopts with the iris for receiving the facial image according to the facial image
The range information of collecting system.
The 6th kind of possible embodiment with reference to first aspect, the embodiment of the present application provide the 7th kind of first aspect
Possible embodiment, wherein the light source group further includes visible light source；
The visible light source is additionally operable to focusing field of view light filling corresponding to the face camera.
The third possible embodiment with reference to first aspect, the embodiment of the present application provide the 8th kind of first aspect
Possible embodiment, wherein at least two cameras left and right settings, the light source and the camera left and right settings.
Second aspect, the embodiment of the present application also provides a kind of iris authentication systems, including：Described in any one of first aspect
Iris capturing system, further include processor；
The iris capturing system, for acquiring the iris image information in the focusing field of view itself covered, and
The iris image information is sent to the processor；
The processor is connect with the iris capturing system, for receiving the iris image information, and based on described
Iris image information carries out image recognition processing.
A kind of iris capturing system provided by the embodiments of the present application and iris authentication system, can lead to a plurality of lenses parameter not
Same camera adjustment carries out the coverage area in the Depth of field region of iris image information acquisition, reduces acquisition iris image
The cooperation difficulty of information user, facilitates the acquisition of iris image information.
To enable the above objects, features, and advantages of the application to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to needed in the embodiment attached in order to illustrate more clearly of the technical solution of the embodiment of the present application
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of structural schematic diagram for iris capturing system that the embodiment of the present application is provided.
Fig. 2 shows the structural schematic diagrams for another iris capturing system that the embodiment of the present application is provided.
Fig. 3 shows a kind of structural schematic diagram for iris camera that the embodiment of the present application is provided.
Fig. 4 shows the structural schematic diagram for another iris camera that the embodiment of the present application is provided.
Fig. 5 shows the structural schematic diagram for a variety of iris camera arrangement modes that the embodiment of the present application is provided.
Fig. 6 shows a kind of big depth of field rainbow for integrated two-way auto-focusing iris camera that the embodiment of the present application is provided
Film acquisition system.
Fig. 7 shows a kind of large field-depth iris acquisition system for integrated four road iris cameras that the embodiment of the present application is provided
System.
Fig. 8 shows a kind of large field-depth iris acquisition for integrated two road iris cameras that the embodiment of the present application is provided
System.
Icon：100, iris camera (it is wherein, shown in Fig. 1 and Fig. 2 multiple, in respectively 100A to 100N, Fig. 5
Show 3, respectively 100A, 100B and 100C)；200, controller；300, light source group；400, range unit；1001, camera lens
Group；1002, imaging sensor；1003, circuit board；1004；Focusing motor；1005, lens base.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
Middle attached drawing, technical solutions in the embodiments of the present application are clearly and completely described, it is clear that described embodiment is only
It is some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is real
Applying the component of example can be arranged and designed with a variety of different configurations.Therefore, below to the application's for providing in the accompanying drawings
The detailed description of embodiment is not intended to limit claimed scope of the present application, but is merely representative of the selected reality of the application
Apply example.Based on embodiments herein, institute that those skilled in the art are obtained without making creative work
There is other embodiment, shall fall in the protection scope of this application.
To keep the purpose, technical scheme and advantage of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
Middle attached drawing, technical solutions in the embodiments of the present application are clearly and completely described, it is clear that described embodiment is only
It is some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is real
Applying the component of example can be arranged and designed with a variety of different configurations.Therefore, below to the application's for providing in the accompanying drawings
The detailed description of embodiment is not intended to limit claimed scope of the present application, but is merely representative of the selected reality of the application
Apply example.Based on embodiments herein, institute that those skilled in the art are obtained without making creative work
There is other embodiment, shall fall in the protection scope of this application.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 5, the embodiment of the present application provides a kind of iris capturing system, including：Controller
200, light source group 300 and camera group；Light source group 300 and camera group are connect with controller 200；Controller 200 is additionally operable to
It is connect with processor；Camera group includes at least two iris cameras 100, and the focusing of at least two iris cameras 100 regards
Field areas is different, and iris camera 100 includes at least one camera lens, and the camera lens includes aperture；The remote rainbow of field of view of focusing
Film camera 100 is equipped with the focal length of camera lens and aperture is more than the coke that the close iris camera 100 of focusing field of view is equipped with camera lens
Away from and aperture；Light source group 300 includes at least two infrared light supplies, each infrared light supply has at least two dispersion angles, often
One dispersion angle corresponds to a focusing field of view；
Controller 200, for controlling at least two infrared light supply at least one dispersion angle at least two rainbows
100 corresponding focusing field of view of film camera emits infrared light；And it controls at least one iris camera 100 and adopts
Collect the iris image information in the corresponding focusing field of view of own optical systematic parameter, and at least one iris is imaged
The iris image information of first 100 acquisition is sent to processor, is carried out at image recognition so that processor is based on iris image information
Reason.
In the embodiment of the present application, as shown in figure 3, iris camera 100 includes：Lens group 1001, imaging sensor 1002
With circuit board 1003.Wherein, imaging sensor 1002 is welded on circuit board 1003, and a camera lens bottom is fixed on circuit board 1003
Seat 1005, lens group 1001 are mounted on lens base 1005.Here, iris camera 100 by imaging sensor 1002 with
Controller 200 connects.The optical system parameter of each camera lens includes focal length and aperture in lens group 1001；Field of view of focusing is remote
Iris camera be equipped with the focal length of camera lens and aperture is more than the focal length that the close iris camera of focusing field of view is equipped with camera lens
And aperture.
Wherein, above-mentioned iris camera 100 can be USB camera, IP Camera, board camera and mainboard
The image transmitting hardware circuit interface of primary iris camera, imaging sensor 1002 can be parallel port, mobile Industry Processor
The various ways such as interface (MIPI, Mobile Industry Processor Interface), it is every to be imaged by multiple irises
Head modulates different distance focusing plane to expand the focusing field of view of entire iris capturing system, and, outfit different resolution,
The camera lens of focal length and aperture realizes that the mode of varifocal imaging belongs in the range of the application protects.
Here, the lens optical system parameter of at least two iris cameras 100 is identical, and the lens group 1001 for including with
The distance of imaging sensor 1002 is different；It is corresponding, the corresponding focusing field of view of at least two iris cameras 100 (namely
Depth of field region or operating distance region) it is different.
Alternatively, the lens optical system parameter of at least two iris cameras 100 is different, and the lens group 1001 for including with
The distance of imaging sensor 1002 is different；It is corresponding, the corresponding focusing field of view of at least two iris cameras 100 (namely
Depth of field region or operating distance region) it is different.
In the embodiment of the present application, the resolution ratio of imaging sensor 1002 and camera lens that each iris camera 100 is configured
Difference, 1002 resolution ratio of imaging sensor provisioned in the big iris camera 100 in Depth of field region is higher, and camera lens resolving power is got over
It is high.
Wherein, the optical system parameter difference of above-mentioned at least two irises camera, 100 camera lens includes each iris camera shooting
The focal length of the camera lens of first 100 installation and aperture difference, the iris camera shooting of acquisition distance remoter (corresponding focusing field of view is bigger)
The focal length of camera lens and aperture provisioned in first 100 are bigger.Wherein, 100 lens focusing embodiment of multiple iris cameras includes rainbow
The lens focusing face object distance of film camera 100 is different, respectively to carrying out focusing imaging by proximad remote several different object distances planes.
As shown in figure 3, the arrangement mode between multiple iris cameras 100 is unlimited, including but not limited to up and down, left and right,
Tilted direction combination, different shape array combination arrangement mode.Wherein, the spacing between multiple iris cameras 100 is unlimited, root
Flexibly implement according to embodiment, such as：That is lateral distance X and iris between iris camera 100A and iris camera 100B take the photograph
As the numerical value of the fore-and-aft distance Y between head 100A and iris camera 100C selects different spacing according to specific embodiment.
Wherein, above controller 200 can control at least two iris cameras 100 collaboration acquisition image, and control
The light on and off of light source and Strength Changes in light source group 300.It specifically includes：A, wherein light source control mode includes control light source igniting number
It measures to be irradiated to different distance iris.Here, the remoter light source igniting quantity of acquisition distance is more.B, wherein light source control side
Formula becomes larger including control light-source brightness and becomes smaller to be irradiated to different distance iris.Here, remoter, the light source igniting of acquisition distance
Brightness is bigger.C, wherein light source control mode includes that control lights different dispersion angle light sources to shine different distance iris
It penetrates.Here, acquisition distance gets over the smaller light source of the bright dispersion angle of far point.
Controller 200 for control the infrared light supply in above-mentioned light source group 300 at least one dispersion angle to it is described extremely
The corresponding focusing field of view of two iris cameras emits infrared light less, and, it controls at least one iris camera 100 and adopts
Collect the iris image information in the corresponding focusing field of view of optical system parameter of itself, iris camera 100 is by acquisition
Iris image information returns to controller 200, and the iris image information received is sent to processor by controller 200, processing
Device extracts the iris feature in iris image information, and based on iris feature and the use after the iris image information received
The corresponding default iris feature in family is compared, and the identification of user is carried out according to comparison result.
Further, iris capturing system provided by the embodiments of the present application, further includes range finder module；Range finder module and control
Device 200 is electrically connected；Controller 200 is for controlling range finder module work；
Controller 200 detects the iris capturing system specifically for the control range finder module and believes at a distance from user
Breath, and the range information returned according to the range finder module and the corresponding focusing of at least two irises camera regard
Field areas determines the first object focusing field of view where user, and the first object focusing field of view is selected to correspond to
First object iris camera acquisition iris image information be sent to the processing as first object iris image information
Device.
In the embodiment of the present application, controller 200 judges distance letter after the range information for receiving range finder module return
Whether breath is in the distance range where at least two iris cameras, 100 corresponding Depth of field region, if it is determined that distance
Information is at least two iris cameras, 100 corresponding focusing field of view, it is determined that user can within the scope of acquisition field of view,
Then, controller 200 selects the iris image information that the corresponding iris camera 100 of the focusing field of view acquires, and will choosing
The iris image information selected is sent to processor；If it is determined that range information is not corresponding at least two iris cameras 100
In field of view of focusing, then continue to monitor the range information that range finder module returns.
Here, range unit 400 be embodied type include but not limited to infrared distance measurement module, ultrasonic distance measuring module and
Face camera.
In the embodiment of the present application, controller 200 selects the corresponding first iris camera of first object focusing field of view
The iris image information of acquisition can reduce the iris image letter sent to processor as first object iris image information
The quantity of breath improves the quality of the iris image information sent to processor simultaneously, improves the treatment effeciency of processor.
Controller 200 selects the iris figure of the corresponding first object iris camera acquisition of first object focusing field of view
As information as first object iris image information mode there are two types of：
The first, controller 200, after the first object focusing field of view where user is determined, control
It makes at least one infrared light supply and infrared light is emitted with the corresponding dispersion angle of first object focusing field of view；And control
It makes the first object iris camera and acquires the iris image information that the first object is focused in field of view, and will be described
The iris image information that first object iris camera returns is sent to the place as the first object iris image information
Manage device.
In the embodiment of the present application, range information that controller 200 is returned according to the range finder module of monitoring controls infrared light
Source emits infrared light, and, the iris image in control first object iris camera acquisition first object focusing field of view
Information, the first object iris image information that first object iris camera is returned is as first object iris image information.
In this way, avoid all infrared light supplies and all iris cameras 100 work bring the wasting of resources, problem of high cost.
Wherein, the above-mentioned infrared light supply for emitting infrared light with the corresponding dispersion angle of first object focusing field of view can be with
It it is one, or multiple；First object iris camera can be one, or multiple.
Second, controller 200 is specifically used for controlling at least two infrared light supply at least two angle of divergence
Degree transmitting infrared light, and the control at least two irises camera are acquired respectively in itself corresponding focusing field of view
Iris image information；And after the first object focusing field of view where user is determined, from least two iris
In the iris image information that camera is sent, the iris image information of the first object iris camera acquisition is selected, and will
The iris image information selected is sent to the processor as first object iris image information.
In the embodiment of the present application, controller 200 controls at least two infrared light supplies and at least two iris cameras in advance
It works, then, the first object focusing field of view belonging to the range information returned according to range finder module determines first mesh
The corresponding first object iris camera of mark focusing field of view, the iris then returned from least two iris cameras 100
The iris image information for selecting the first object iris camera to return in image information is believed as first object iris image
Breath.
Wherein, the above-mentioned infrared light supply for emitting infrared light with the corresponding dispersion angle of first object focusing field of view can be with
It it is one, or multiple；First object iris camera can be one, or multiple.
As shown in figure 4, iris capturing system provided by the embodiments of the present application, each described iris camera include：
Camera lens, imaging sensor 1002 and the focusing motor 1004 of at least one optical system parameter；Imaging sensor 1002 and focusing
Motor 1004 is connect with controller 200；
Controller 200 is additionally operable to camera lens and imaging sensor that control focusing motor 1004 adjusts iris camera 100
1002 distance, with the focusing plane by adjusting iris camera 100 come adjust iris camera 100 focusing field of view and
The clarity of the iris image of acquisition.Here, when iris camera 100 includes focusing motor 1004, the focusing motor 1004
It is equivalent to lens base, which fixes on circuit boards, and camera lens is fixed on focusing motor 1004.
Wherein, above-mentioned focusing motor 1004 includes but not limited to electric motor, voice coil motor etc..The focusing horse of controller 200
Control mode up to 1004 includes a, controls motor by default step-length, each pre-determined distance, and cycle polling are arrived in focusing successively
It repeats to focus；B, the range data fed back according to range unit 400 selects specified iris camera to carry out Image Acquisition, and
It controls the focusing of focusing motor 1004 and arrives distance to a declared goal.
In specific implementation mode, controller 200 controls the mirror that focusing motor 1004 adjusts at least two iris cameras 100
First 1001 and imaging sensor 1002 distance, it is right respectively to adjust at least two iris cameras 100 by adjusting the distance
The focusing plane and focusing field of view answered.
In the embodiment of the present application, controller 200 can also obtain clarity more in conjunction with range finder module and focusing motor 1004
The iris image information changed, wherein
Corresponding to the selection method of the first above-mentioned first object iris image information：Controller 200 is additionally operable to controlling
After the first object iris camera acquires the iris image information in the first object field of view, if detecting institute
Iris image information is stated to be not on the focusing plane of first object focusing field of view, then control the focusing motor according to
First default step-length adjusts the focusing plane of the first object focusing field of view.
Corresponding to select for above-mentioned second first object iris image information method for：Controller 200 is additionally operable to from described
The iris figure of the first object iris camera acquisition is selected in the iris image information that at least two iris cameras are sent
After picture information, if detecting, the iris image information is not on the focusing plane of the first object focusing field of view,
Then control the focusing plane that focusing motor 1004 adjusts the first object focusing field of view according to the second default step-length.
Here, controller 200 can expand first object pair by adjusting the focusing plane of first object focusing field of view
The coverage area of burnt field of view, while also the iris image information in adjustment first object focusing field of view is located at the first mesh
On the focusing plane of mark focusing field of view, the clarity of iris image information is improved.
Wherein, above-mentioned first default step-length and above-mentioned second default step-length may be the same or different.
In the iris capturing system provided in the embodiment of the present application, the concrete mode that controller controls ranging is as follows：
First, above-mentioned range finder module includes face camera；Face camera is electrically connected with the controller；
The face camera, for acquiring the human face image information in itself corresponding focusing field of view, and by institute
It states human face image information and is sent to the controller；Wherein, the focusing field of view of the face camera can cover described
The focusing field of view of at least two iris cameras；
Controller 200, for extracting face characteristic information from the human face image information, and according to the face characteristic
Information and preset optical imaging system parameter, determine the range information of the iris capturing system and user.
Here, above-mentioned light source group further includes visible light source, the visible light source, is additionally operable to corresponding to the face camera
Focusing field of view light filling.
Second, controller 200 is additionally operable to from the iris image information that at least one iris camera 100 acquires
Extract eye feature information, according to eye feature information pixel number shared in the iris image information of acquisition,
The focal length of camera lens and the Pixel Dimensions of imaging sensor in default imaging object of reference and at least one iris camera, really
The range information of fixed the iris capturing system and user；
Here, according to the relationship 1/u+1/v=1/f between Optical Formula object distance u and image distance v and focal length, (1/ object distance
The focal length of+1/ image distance=1/), obtain u=v*f/ (v-f)；
And the proportionate relationship of the proportionate relationship and object distance and image distance of image height s and the high w of object is：U/v=w/s；Obtain v=u*s/
w；Front company is substituted into, u=f* (s+w)/s is finally obtained；Focal length is the equivalent focal length of lens group it is known that w is object coca according to
Know with stable dimensions reference substance (if selected iris dimensions are reference substance, then the iris dimensions of common people are 10mm, if
Select interpupillary distance reference substance high, then the interpupillary distance of general people is 65mm), image height s=pixel number * Pixel Dimensions, pixel number is image
Pixel number (image, which calculates, to be obtained) shared by upper picture, Pixel Dimensions are the Pixel Dimensions of the imaging sensor in each camera
It is fixed, is known.
Wherein, the formula of lens imaging is in camera Base
It can determine the range information of the iris capturing system and user in the optical system parameter of above-mentioned formula and camera.
Third, controller 200, the iris image information for being sent according to any two iris camera determine
The range information of the iris capturing system and user.
A kind of iris capturing system provided by the embodiments of the present application can lead to the different iris camera of a plurality of lenses parameter
Adjustment carries out the coverage area in the Depth of field region of iris image information acquisition, reduces acquisition iris image information user's
Coordinate difficulty, facilitates the acquisition of iris image information.
It is illustrated with reference to the control method in iris capturing system：
Control method 1：Controller controls the range information of range finder module iris capturing system and user；Controller according to away from
Judge user whether can be within the scope of acquisition field of view from information；If so, controller is believed according to range information selection comprising the distance
The iris camera of (namely visual field distance) is ceased, and the focusing motor focusing for controlling the iris camera is arrived where the range information
Position carry out iris image information acquisition.Iris image information of the processor based on acquisition carries out authenticating user identification.
Control method 2：Controller controls multiple iris cameras and acquires iris image information simultaneously；Controller control is each
The focusing motor of iris camera carries out cycle focusing by default step-length；Processor judges that cycle images defocused each iris
Whether the clear quality of the iris image of head acquisition meets preset condition, if so, processor is based on the iris for meeting preset condition
Image information carries out iris image identification and authentication service.
Control method 3：Controller controls face iris camera and acquires human face image information；Controller is believed from facial image
Face characteristic information is extracted in breath, and according to face characteristic information and preset optical imaging system parameter, determines that iris is adopted
The range information of collecting system and user；Controller includes the rainbow of the range information (namely visual field distance) according to range information selection
Film camera, and the focusing motor focusing for controlling the iris camera carries out iris image letter to the position where the range information
Breath acquisition.Iris image information of the processor based on acquisition carries out authenticating user identification.
Control method 4：Controller controls two iris cameras and acquires iris image information；From at least one iris
Camera acquisition the iris image information in extract eye feature information, according to the eye feature information acquisition institute
It states pixel number shared in iris image information, preset camera lens in imaging object of reference and at least one iris camera
The Pixel Dimensions of focal length and imaging sensor determine the range information of the iris capturing system and user；Controller according to away from
Include the iris camera of the range information from information selection, and the distance is arrived in the focusing motor focusing for controlling the iris camera
Position where information carries out iris image information acquisition.Iris image information of the processor based on acquisition carries out user identity and recognizes
Card.
Control method 5：Controller controls two iris camera collection images；To the image of two-way iris camera acquisition
Binocular solid ranging is carried out, judges range information；Controller is imaged according to iris of the range information selection comprising the range information
Head, and the focusing motor focusing for controlling the iris camera carries out iris image information to the position where the range information and adopts
Collection.Iris image information of the processor based on acquisition carries out authenticating user identification.
A kind of iris authentication system provided by the embodiments of the present application, including：Above-mentioned iris capturing system and with the iris
The processor of acquisition system connection；
The iris capturing system, for acquiring the iris image information in the focusing field of view itself covered, and
The iris image information of acquisition is sent to the processor；
The processor carries out image knowledge for receiving the iris image information, and based on the iris image information
It manages in other places.
With reference to embodiment one, embodiment two and embodiment three to the iris capturing system that is provided in the embodiment of the present application
It illustrates：
Embodiment one
As shown in fig. 6, being a kind of large field-depth iris acquisition system of integrated two-way auto-focusing iris camera, embodiment party
Formula is that two iris cameras 100 closely come together, and two iris cameras 100 are 100a, 100b respectively, is equipped with automatic
Focusing motor, 100a iris resolution ratio of camera head is relatively low, and the lens focus and aperture of configuration are smaller, and 100b iris cameras are differentiated
Rate is higher, and the lens focus and aperture of configuration are larger.Two groups of light source groups are implemented in iris camera both sides, and wherein light source group includes
Infrared light supply, infrared light supply include that the light source of 2 kinds of dispersion angles is big angle of divergence 300a, 300d respectively, small divergence angle degree 300b,
300c, wherein 300a and 300d infrared light supply dispersion angles are angle 1, and iris when closer to acquisition distance is irradiated,
Dispersion angle, that is, angle 2 of 300b, 300c infrared light supply carries out further infrared radiation to acquiring the iris of distance farther out.
The lens focusing of 100a iris cameras acquires (near object distance 10) clear iris image of closer distance to focusing plane 10,
Controller 200 according to the feedback data of range unit 400, control 100a irises camera focusing motor to object distance 11, object distance 12,
Object distance 13 carries out focusing imaging, final so that can collect the suitable iris image of specification in 1 entire scope of visual field；100b
The lens focusing of iris camera acquires longer-distance (near object distance 20) clear iris image, control to focusing plane 20
The feedback data of 200 range unit 400 of device, control 100b irises camera focusing motor to object distance 21, object distance 22, object distance 23 into
Row focusing imaging, it is final so that can collect the suitable iris image of specification in 2 entire scope of visual field；Double iris cameras
Final effective acquisition field of view be visual field 1 and visual field 2, the depth of field can reach 1 meter, greatly optimizes Product's Ease of Use.Controller
200 100 multichannel iris camera real-time image acquisitions of control and light source group 300 carry out alternately flexible light filling, quickly complete iris
The acquisition of image and authentication service.
Embodiment two
As shown in fig. 7, for a kind of iris capturing system of integrated four road iris cameras, tetra- road irises of embodiment Wei Jiang
Two row modes closely come together camera 100 in two rows, and four road iris cameras 100 are 100a, 100b, 100c respectively,
100d, from the near to the remote, the focal length and aperture slot for configuring camera lens incrementally increase acquisition field of view, the image sensor resolutions of configuration and
Camera lens resolving power incrementally increases.Two groups of light source groups are implemented in iris camera both sides, and wherein light source group includes infrared light supply, infrared
Light source includes that the light source of 2 kinds of dispersion angles is big angle of divergence 300a, 300d respectively, small divergence angle degree 300b, 300c, 300a and
300d infrared light supply dispersion angles are angle 1, and iris when closer to acquisition distance is irradiated, 300b, 300c infrared light supply
Dispersion angle, that is, angle 2, carry out further infrared radiation to acquiring distance iris farther out.Controller is according to real-time acquisition
Situation is lighted the light source of different number and angle of divergence type, is flexibly illuminated, the lens focusings of 100a iris cameras to pair
Focal plane 10, acquires (near object distance 10) clear iris image of minimum distance, the lens focusings of 100b iris cameras to pair
Focal plane 20, acquires (near object distance 20) clear iris image of closer distance, the lens focusings of 100c iris cameras to pair
Focal plane 30, acquires longer-distance (near object distance 30) clear iris image, the lens focusings of 100d iris cameras to pair
Focal plane 40 acquires (near object distance 40) clear iris image of maximum distance, and controller is according to range finder module range information, choosing
The roads Ze Na iris camera is acquired, further to complete iris image acquiring and authentication service.
Embodiment three
As shown in figure 8, a kind of iris capturing system of integrated two-way iris camera, embodiment images for two-way iris
First 100 closely come together, and two-way iris camera 100 is 100a respectively, and 100b, from the near to the remote, iris images acquisition field of view
Head 100a resolution ratio is relatively low, and the lens focus and aperture of configuration are smaller, and iris camera 100b resolution ratio is higher, the camera lens of configuration
Focal length and aperture are larger.Two groups of light source groups are implemented in iris camera both sides, and wherein light source group includes infrared light supply, infrared light supply
Including the light source of 2 kinds of dispersion angles is big angle of divergence 300a, 300d respectively, small divergence angle degree 300b, 300c, 300a and 300d are red
Outer light source dispersion angle is angle 1, and iris when closer to acquisition distance is irradiated, the diverging of 300b, 300c infrared light supply
Angle, that is, angle 2 carries out further infrared radiation to acquiring the iris of distance farther out.The lens focusing of iris camera 100a
To focusing plane 10, (near object distance 10) clear iris image of closer distance is acquired；The lens focusing of iris camera 100b
To focusing plane 20, longer-distance (near object distance 20) clear iris image is acquired, controller controls two irises and takes the photograph simultaneously
As head carries out Image Acquisition in real time, Quality estimation is carried out to the image of acquisition, further rainbow is implemented to up-to-standard image
Film feature extraction with compare.
Another control mode of controller is that any one iris camera is selected to be acquired, according to the image of acquisition
Eye positioning, and further determination eyeball size or interpupillary distance information are carried out, is combined according to eyeball size and interpupillary distance information
The optical system parameter of iris camera, judges range information, according to range information, judge to select coverage distance range clearly at
Whether the iris camera of picture is presented iris camera, if not be then switched to can shooting clear image iris image
Head, and carry out iris capturing and identifying processing.
A kind of iris capturing system provided by the embodiments of the present application, by using the different iris of multiple focusing field of view
Camera expands the focusing field of view of entire iris capturing system, and the cooperation for reducing acquisition iris image information user is difficult
Degree, facilitates the acquisition of iris image information.
A kind of iris authentication system provided by the embodiments of the present application, including：Above-mentioned iris capturing system further includes processing
Device；
The iris capturing system, for acquiring the iris image information in the focusing field of view itself covered, and
The iris image information is sent to the processor；
The processor is connect with the iris capturing system, for receiving the iris image information, and based on described
Iris image information carries out image recognition processing.
A kind of iris authentication system provided by the embodiments of the present application, by using the different iris of multiple focusing field of view
Camera expands the focusing field of view of entire iris capturing system, and the cooperation for reducing acquisition iris image information user is difficult
Degree, facilitates the acquisition of iris image information.
A kind of controller and processor that the embodiment of the present application is provided can be specific hardware or installation in equipment
In software or firmware etc. in equipment.The technique effect of the device that the embodiment of the present application is provided, realization principle and generation and
Preceding method embodiment is identical, and to briefly describe, device embodiment part does not refer to place, can refer in preceding method embodiment
Corresponding contents.It is apparent to those skilled in the art that for convenience and simplicity of description, foregoing description is
The specific work process of system, device and unit can refer to the corresponding process in above method embodiment, no longer superfluous herein
It states.
In embodiment provided herein, it should be understood that disclosed device and method, it can be by others side
Formula is realized.The apparatus embodiments described above are merely exemplary, for example, the division of unit, only a kind of logic work(
It can divide, formula that in actual implementation, there may be another division manner, in another example, multiple units or component can combine or can collect
At to another system, or some features can be ignored or not executed.Another point, shown or discussed mutual coupling
Close or direct-coupling or communication connection can be by some communication interfaces, the INDIRECT COUPLING or communication connection of device or unit,
Can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, and be shown as unit
Component may or may not be physical unit, you can be located at a place, or may be distributed over multiple networks
On unit.Some or all of unit therein can be selected according to the actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in embodiment provided by the present application can be integrated in a processing unit, also may be used
It, can also be during two or more units be integrated in one unit to be that each unit physically exists alone.
If function is realized in the form of SFU software functional unit and when sold or used as an independent product, can store
In a computer read/write memory medium.Based on this understanding, the technical solution of the application is substantially in other words to existing
There is the part for the part or the technical solution that technology contributes that can be expressed in the form of software products, the computer
Software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be personal meter
Calculation machine, server or network equipment etc.) execute each embodiment method of the application all or part of step.And it is above-mentioned
Storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory
The various media that can store program code such as (RAM, Random Access Memory), magnetic disc or CD.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing, in addition, term " the
One ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Finally it should be noted that：Above example, the only specific implementation mode of the application, to illustrate the skill of the application
Art scheme, rather than its limitations, the protection domain of the application are not limited thereto, although with reference to the foregoing embodiments to the application into
Go detailed description, it will be understood by those of ordinary skill in the art that：Any one skilled in the art is at this
Apply in the technical scope disclosed, still can modify or can be thought easily to the technical solution recorded in previous embodiment
To variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make corresponding
The essence of technical solution is detached from the spirit and scope of the embodiment of the present application technical solution.The protection domain in the application should all be covered
Within.Therefore, the protection domain of the application should be subject to the protection scope in claims.
Claims (10)
1. a kind of iris capturing system, which is characterized in that including：Controller, light source group and camera group；The light source group and institute
It states camera group to connect with the controller respectively, the controller is additionally operable to connect with processor；The camera group includes
At least two iris cameras, and the focusing field of view of at least two irises camera is different；The iris camera
Including at least one camera lens, the camera lens includes aperture；The remote iris camera of field of view of focusing be equipped with camera lens focal length and
Aperture is more than the focal length and aperture that the close iris camera of focusing field of view is equipped with camera lens；The light source group includes at least two
Infrared light supply, each described infrared light supply have at least one dispersion angle；
The controller, for controlling at least two infrared light supply at least one dispersion angle at least two rainbow
The corresponding focusing field of view of film camera emits infrared light；And control at least one iris camera acquires itself
Optical system parameter it is corresponding focusing field of view in iris image information.
2. iris capturing system according to claim 1, which is characterized in that further include range unit；The range unit
It is connect with the controller；
The controller detects the range information of the iris capturing system and user specifically for controlling the range unit,
And the range information returned according to the range unit, the focusing field of view where controlling the range information are corresponding
First object iris camera acquires iris image information.
3. iris capturing system according to claim 1, which is characterized in that the iris cam lens pedestal；It is described
Camera lens is fixed on the lens base.
4. iris capturing system according to claim 3, which is characterized in that the iris camera further includes：Focusing horse
It reaches and imaging sensor；Described image sensor and the focusing motor are connect with the controller；
The controller is additionally operable to control camera lens described in the focusing motor adjustment iris camera and described image biography
The distance of sensor adjusts the focusing field of view of the iris camera with the focusing plane by adjusting the iris camera
With the clarity of the iris image of acquisition.
5. iris capturing system according to claim 4, which is characterized in that the iris camera further includes circuit base
Plate；Described image sensor is fixed in the circuit board, and the camera lens is fixed on the burnt motor.
6. iris capturing system according to claim 4, which is characterized in that acquire apart from remote iris camera outfit
The resolution ratio of imaging sensor is more than the resolution ratio for the imaging sensor that acquisition is equipped with apart from close iris camera.
7. iris capturing system according to claim 2, which is characterized in that the range unit includes face camera；
The face camera is connect with the controller；
The face camera, the facial image in focusing field of view for acquiring itself, and the facial image is sent out
It send to the controller；
The controller determines user and the iris capturing system for receiving the facial image according to the facial image
The range information of system.
8. iris capturing system according to claim 7, which is characterized in that the light source group further includes visible light source；
The visible light source is additionally operable to focusing field of view light filling corresponding to the face camera.
9. iris capturing system according to claim 4, which is characterized in that at least two cameras left and right settings,
The light source and the camera left and right settings.
10. a kind of iris authentication system, which is characterized in that including：Claim 1-9 any one of them iris capturing systems,
It further include processor；
The iris capturing system, for acquiring the iris image information in the focusing field of view itself covered, and by institute
It states iris image information and is sent to the processor；
The processor is connect with the iris capturing system, for receiving the iris image information, and is based on the iris
Image information carries out image recognition processing.
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| CN201820415085.3U CN207965914U (en) | 2018-03-26 | 2018-03-26 | A kind of iris capturing system and iris authentication system |
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| CN201820415085.3U CN207965914U (en) | 2018-03-26 | 2018-03-26 | A kind of iris capturing system and iris authentication system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110443160A (en) * | 2019-07-18 | 2019-11-12 | 北京中科虹霸科技有限公司 | Method for collecting iris and device |
| CN111521119A (en) * | 2020-04-24 | 2020-08-11 | 北京科技大学 | Casting blank thickness self-adaptive online image acquisition method |
| CN112417997A (en) * | 2020-11-03 | 2021-02-26 | 北京中科虹霸科技有限公司 | Iris image acquisition device and method |
| CN112651382A (en) * | 2021-01-15 | 2021-04-13 | 北京中科虹霸科技有限公司 | Focusing data calibration system and iris image acquisition system |
| CN114500976A (en) * | 2019-11-21 | 2022-05-13 | 苏州思源科安信息技术有限公司 | Illumination light source radiation system for long-distance large-visual-field iris optical imaging device |
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2018
- 2018-03-26 CN CN201820415085.3U patent/CN207965914U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110443160A (en) * | 2019-07-18 | 2019-11-12 | 北京中科虹霸科技有限公司 | Method for collecting iris and device |
| CN114500976A (en) * | 2019-11-21 | 2022-05-13 | 苏州思源科安信息技术有限公司 | Illumination light source radiation system for long-distance large-visual-field iris optical imaging device |
| CN114500976B (en) * | 2019-11-21 | 2023-08-08 | 苏州思源科安信息技术有限公司 | Illumination light source radiation system for long-distance large-field iris optical imaging device |
| CN111521119A (en) * | 2020-04-24 | 2020-08-11 | 北京科技大学 | Casting blank thickness self-adaptive online image acquisition method |
| CN111521119B (en) * | 2020-04-24 | 2021-07-23 | 北京科技大学 | Casting blank thickness self-adaptive online image acquisition method |
| CN112417997A (en) * | 2020-11-03 | 2021-02-26 | 北京中科虹霸科技有限公司 | Iris image acquisition device and method |
| CN112651382A (en) * | 2021-01-15 | 2021-04-13 | 北京中科虹霸科技有限公司 | Focusing data calibration system and iris image acquisition system |
| CN112651382B (en) * | 2021-01-15 | 2024-04-02 | 北京中科虹霸科技有限公司 | Focusing data calibration system and iris image acquisition system |
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