CN107341467A - Method for collecting iris and equipment, electronic installation and computer-readable recording medium - Google Patents
Method for collecting iris and equipment, electronic installation and computer-readable recording medium Download PDFInfo
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- CN107341467A CN107341467A CN201710526025.9A CN201710526025A CN107341467A CN 107341467 A CN107341467 A CN 107341467A CN 201710526025 A CN201710526025 A CN 201710526025A CN 107341467 A CN107341467 A CN 107341467A
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- Prior art keywords
- iris
- identified
- electronic installation
- recognition module
- image
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/19—Sensors therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/46—Indirect determination of position data
- G01S17/48—Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
Abstract
The invention discloses a kind of method for collecting iris, for electronic installation.Electronic installation includes iris recognition module.Iris recognition module includes infrared camera.Method for collecting iris includes：Obtain the collection distance between iris recognition module and object to be identified；The target focal length of infrared camera is calculated according to collection distance；Infrared camera is controlled to shoot the iris image of object to be identified with target focal length.The invention also discloses a kind of iris capturing equipment, electronic installation and computer-readable recording medium.Method for collecting iris, iris capturing equipment, electronic installation and the computer-readable recording medium of embodiment of the present invention are by obtaining the distance of iris recognition module and user with the focusing focal length of adjust automatically infrared camera, so that iris portion occupied area is sufficiently large in the iris image of collection, it is easy to the extraction of the characteristic information of follow-up iris.
Description
Technical field
The present invention relates to biometrics identification technology field, more particularly to a kind of method for collecting iris and equipment, electronics dress
Put and computer-readable recording medium.
Background technology
When gathering iris image, if the hypertelorism of user and infrared camera, rainbow in the iris image collected
The area of film part is smaller, may lead to not the characteristic information of accurate extraction iris.
The content of the invention
The invention provides a kind of method for collecting iris, iris capturing equipment, electronic installation and computer-readable storage medium
Matter.
The method for collecting iris of embodiment of the present invention is used for electronic installation.The electronic installation includes iris recognition mould
Group, the iris recognition module include infrared camera, and the method for collecting iris comprises the following steps：
Obtain the collection distance between the iris recognition module and object to be identified；
The target focal length of the infrared camera is calculated according to the collection distance；With
The infrared camera is controlled to shoot the iris image of the object to be identified with the target focal length.
The iris capturing equipment of embodiment of the present invention is used for electronic installation.The electronic installation includes iris recognition mould
Group, the iris recognition module include infrared camera, and the iris capturing equipment includes acquisition device, computing device and first
Control device.The acquisition device is used to obtain the collection distance between the iris recognition module and object to be identified；It is described
Computing device is used for the target focal length that the infrared camera is calculated according to the collection distance；The first control device is used for
The infrared camera is controlled to shoot the iris image of the object to be identified with the target focal length.
The electronic installation of embodiment of the present invention includes iris recognition module, one or more processors, memory and one
Individual or multiple programs.Wherein one or more of programs are stored in the memory, and are configured to by described one
Individual or multiple computing devices, described program include performing the instruction of following steps：
Obtain the collection distance between the iris recognition module and object to be identified；
The target focal length of the infrared camera is calculated according to the collection distance；With
The infrared camera is controlled to shoot the iris image of the object to be identified with the target focal length.
The computer-readable recording medium of embodiment of the present invention includes what is be used in combination with the electronic installation that can be imaged
Computer program, the computer program can be executed by processor to complete above-mentioned method for collecting iris.
Method for collecting iris, iris capturing equipment, electronic installation and the computer-readable storage medium of embodiment of the present invention
Matter is by obtaining the distance of iris recognition module and user with the focusing focal length of adjust automatically infrared camera, so that collection
Iris portion occupied area is sufficiently large in iris image, is easy to the extraction of the characteristic information of follow-up iris.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the schematic flow sheet of the method for collecting iris of some embodiments of the present invention.
Fig. 2 is the module diagram of the electronic installation of some embodiments of the present invention.
Fig. 3 is the module diagram of the electronic installation of some embodiments of the present invention.
Fig. 4 is the schematic flow sheet of the method for collecting iris of some embodiments of the present invention.
Fig. 5 is the module diagram of the electronic installation of some embodiments of the present invention.
Fig. 6 is the schematic flow sheet of the method for collecting iris of some embodiments of the present invention.
Fig. 7 is the module diagram of the control unit of some embodiments of the present invention.
Fig. 8 is the principle schematic of the method for collecting iris of some embodiments of the present invention.
Fig. 9 is the schematic flow sheet of the method for collecting iris of some embodiments of the present invention.
Figure 10 is the module diagram of the iris capturing equipment of some embodiments of the present invention.
Figure 11 is the schematic flow sheet of the method for collecting iris of some embodiments of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Also referring to Fig. 1 to 2, the method for collecting iris of embodiment of the present invention is used for electronic installation 100.Electronic installation
100 include iris recognition module 20, and iris recognition module 20 includes infrared camera 22.Method for collecting iris includes following step
Suddenly：
S12：Obtain the collection distance between iris recognition module 20 and object to be identified；
S14：The target focal length of infrared camera 22 is calculated according to collection distance；With
S16：Infrared camera 22 is controlled to shoot the iris image of object to be identified with target focal length.
Referring again to Fig. 2, the method for collecting iris of embodiment of the present invention can be adopted by the iris of embodiment of the present invention
Collection equipment 10 is realized.The iris capturing equipment 10 of embodiment of the present invention includes acquisition device 11, computing device 12 and first is controlled
Device 13 processed.Step S12 can be realized that step S14 can be realized by computing device 12 by acquisition device 11, and step S16 can be with
Realized by first control device 13.
In other words, the collection that acquisition device 11 can be used for obtaining between iris recognition module 20 and object to be identified away from
From；Computing device 12 can be used for the target focal length that infrared camera 22 is calculated according to collection distance；First control device 13 can be used
The iris image of object to be identified is shot with target focal length in control infrared camera 22.
The iris capturing equipment 10 of embodiment of the present invention can apply to the electronic installation 100 of embodiment of the present invention.
In other words, the electronic installation 100 of embodiment of the present invention includes the iris capturing equipment 10 of embodiment of the present invention.
In some embodiments, electronic installation 100 includes mobile phone, tablet personal computer, notebook computer, intelligent watch, intelligence
Energy bracelet, intelligent glasses, intelligent helmet etc..In a particular embodiment of the present invention, electronic installation 100 is mobile phone.
Referring to Fig. 3, in some embodiments, electronic installation 100 includes iris recognition module 20, at one or more
Manage device 30, memory 40 and one or more programs 41.Wherein, one or more programs 41 are stored in the memory 40
In, and be configured to be performed by one or more processors 30, program 41 includes performing the instruction of following steps：
S12：Obtain the collection distance between iris recognition module 20 and object to be identified；
S14：The target focal length of infrared camera 22 is calculated according to collection distance；With
S16：Infrared camera 22 is controlled to shoot the iris image of object to be identified with target focal length.
It is appreciated that during iris recognition, if object to be identified and the distance between iris recognition module 20 are excessive,
In the iris image collected iris portion account for whole iris image ratio it is smaller, the line for extracting iris may be led to not
Reason information is so that iris recognition can not be carried out.In some embodiments, the area in iris image shared by iris portion should be big
In or equal to area corresponding to 100 × 100 shared by pixel count, in this way, iris image could be used for follow-up iris feature letter
Breath extraction.The method for collecting iris of embodiment of the present invention by obtain the distance of iris recognition module 20 and object to be identified with
The focusing focal length of adjust automatically infrared camera 22, so that iris portion occupied area is sufficiently large in the iris image of collection,
Complete and clean mark iris image is obtained, is easy to follow-up iris feature to extract and identify.Wherein, infrared camera 22 is
Zoom camera, it is determined that after the collection distance of iris recognition module 20 and object to be identified, the autozoom of infrared camera 22
With using the iris image of target focal length shooting object to be identified.In this way, infrared camera 22 can carry out focal length of focusing automatically
Adjustment, makes electronic installation 100 more intelligent, improves user experience.
Referring to Fig. 4, in some embodiments, electronic installation 100 includes laser range sensor 50.Step S12 is obtained
The collection distance between iris recognition module 20 and object to be identified is taken to comprise the following steps：
S121：Control the detection collection distance of laser range sensor 50；With
S122：Read collection distance.
Referring to Fig. 5, in some embodiments, acquisition device 11 includes control unit 111 and reading unit 112.Step
Rapid S121 can be realized by control unit 111.Step S122 can be realized by reading unit 112.
In other words, control unit 111 can be used for the control detection collection distance of laser range sensor 50；Reading unit
112 can be used for reading collection distance.
Referring again to Fig. 3, in some embodiments, program 41 also includes being used for the instruction for performing following steps：
S121：Control the detection collection distance of laser range sensor 50；With
S122：Read collection distance.
Laser range sensor 50 includes the laser sensor using pulse ranging and phase ranging.Using pulse ranging
The principle of laser range sensor 50 is to send light pulse by laser range sensor 50, and light pulse is reflected through object to be identified
Afterwards, light pulse returns to the reception system of laser range sensor 50.Transmitting is measured by laser range sensor 50 and receives light
The time interval (that is, round trip propagation time of the light pulse on testing distance) and the spread speed of light pulse of pulse can be calculated
Go out testing distance.Laser range sensor 50 using phase ranging is by measuring the light wave of continuous modulation on testing distance
The phase place change that roundtrip propagation is occurred calculates so as to indirect time of measuring further according to the spread speed for measuring time and light wave
Testing distance.In a particular embodiment of the present invention, laser range sensor 50 is to be sensed using the laser ranging of pulse ranging
Device 50.Control unit 111 controls laser range sensor 50 to detect the collection between iris recognition module 20 and object to be identified
Distance, then detection data are read from laser range sensor 50 by reading unit 112.
Referring to Fig. 6, in some embodiments, the step S121 control detection collection distance bags of laser range sensor 50
Include following steps：
S1211：Control the transmission signal light of laser range sensor 50；
S1212：Laser range sensor 50 is controlled to receive reflected signal light；
S1213：The time difference data that transmission signal light and reflected signal light are obtained according to laser range sensor 50 calculates
More height distances；With
S1214：It is collection distance to determine the maximum in more height distances；Or the intermediate value in more height distances is determined to adopt
Collect distance；Or determine that the average value in more height distances is collection distance.
Referring to Fig. 7, in some embodiments, control unit 111 includes the first control subelement 1111, second and controlled
Subelement 1112, computation subunit 1113 and determination subelement 1114.Step S1211 can be real by the first control subelement 1111
Existing, step S1212 can realize that step S1213 can be realized by computation subunit 1113 by the second control subelement 1112, walk
Rapid S1214 can be realized by determination subelement 1114.
In other words, the first control subelement 1111 can be used for the control transmission signal light of laser range sensor 50；Second
Subelement 1112 is controlled to can be used for control laser range sensor 50 to receive reflected signal light；Computation subunit 1113 can be used for root
The time difference data that transmission signal light and reflected signal light are obtained according to laser range sensor 50 calculates more height distances；It is it is determined that sub
The maximum that unit 1114 can be used for determining in more height distances is collection distance；Or the intermediate value in more height distances is determined to adopt
Collect distance；Or determine that the average value in more height distances is collection distance.
Referring again to Fig. 3, in some embodiments, program 41 also includes being used for the instruction for performing following steps：
S1211：Control the transmission signal light of laser range sensor 50；
S1212：Laser range sensor 50 is controlled to receive reflected signal light；
S1213：The time difference data that transmission signal light and reflected signal light are obtained according to laser range sensor 50 calculates
More height distances；With
S1214：It is collection distance to determine the maximum in more height distances；Or the intermediate value in more height distances is determined to adopt
Collect distance；Or determine that the average value in more height distances is collection distance.
Specifically, referring to Fig. 8, multiple with array distribution are for transmission signal light in laser range sensor 50
The wavelength of laser, the direction of the launch difference of each laser and the flashlight of each laser transmitting is different.With Laser Measuring
Number away from laser in sensor 50 is that 9 processes to laser ranging are described in detail.The work of laser range sensor 50
When making, 9 lasers are simultaneously or timesharing carries out Laser emission.The flashlight that 9 lasers are launched is arrived separately in space
On 9 regions of object to be identified.Flashlight is reflected after reaching object to be identified, is provided with laser range sensor 50
The optical filter of a variety of wave bands, every kind of optical filter is corresponding with the wavelength for the flashlight that 9 lasers are launched, in other words, and each
The light of wave band where the optical filter that laser is correspondingly arranged is only capable of making the flashlight of corresponding laser transmitting is by and filtering out it
The light of all band.In this way, laser range sensor 50 divides for 9 receiving areas.Due to each laser transmission signal light and connect
The time difference difference of reflected signal light is received, therefore, each receiving area will measure a sub- distance.Laser range sensor 50
After obtaining 9 son distances, determination subelement 1114 be used as by the intermediate value or average value that take 9 sub- distances gathers distance.Or
Determination subelement 1114 is by taking the son distance that numerical value is maximum in 9 son distances to be used as collection distance.
The coverage of the flashlight of the transmitting of laser range sensor 50 should with it is infrared in iris recognition module 20
The visual field of camera 22 matches.For example, the coverage of flashlight is equal with the visual field of infrared camera 22, or flashlight
Coverage it is more bigger than the visual field of infrared camera 22.In this way, the value for the collection distance that guarantee finally obtains is more accurate.
In other embodiments, collection distance can also be measured by structure light Range finder.Structure optical depth
Ranging is that the photo structure of certain pattern is projeced into body surface using the projector, is formed on surface and is adjusted by testee shape
The striation 3-D view of system.Striation 3-D view is detected by camera so as to obtain striation two dimension fault image.The distortion of striation
Relative position and body surface the shape exterior feature or height that degree is depended between the projector and camera.The displacement shown along striation
Proportional to the height of body surface, kink illustrates the change of plane, the physical clearance of discontinuous display surface.Work as the projector
The timing of relative position one between camera, the three-dimensional of body surface can be reappeared by the two-dimentional optical strip image coordinate to distort and taken turns
Exterior feature, so as to obtain depth information.In this way, by the projector by project structured light to object to be identified, further according to detection
To striation two dimension fault image can obtain collection distance.
In addition, collection distance also can be by detecting the face of human eye or iris in the iris image that infrared camera 22 is shot
Product accounting is determined.Wherein, the area accounting of human eye or iris in view picture iris image has necessarily with collection distance
Mapping relations, above-mentioned mapping relations can be obtained in early stage by experiment.Mapping relations are stored in memory 40.When
When processor 30 handles iris image to detect the area accounting of human eye or iris in view picture iris image, you can according to face
Product accounting determines collection distance with gathering the mapping relations of distance.
After collection distance is got, you can calculate target focal length according to collection distance.Specifically, infrared camera 22 is
Zoom camera, there are multiple zoom gears.After obtaining collection distance, target focal length can be by memory 40 be preset in
In look-up table according to collection Distance query corresponding to target focal length.Wherein, look-up table is to gather reflecting for distance and target focal length
Relation is penetrated, the mapping relations can be measured in early stage via experiment.
After obtaining target focal length, you can set the zoom gear of infrared camera 22 so that infrared photography according to target focal length
First 22 carry out the shooting of iris image with target focal length.Wherein, the zoom mode of infrared camera 22 has a variety of.For example, at certain
In a little embodiments, infrared camera 22 is simultaneously including fixed lens module and variable lens module, by changing variable lens
Module can change imaging optical path, so as to change the focal length of infrared camera 22 within the specific limits.In other embodiment party
In formula, infrared camera 22 can use liquid lens to realize zoom function.Liquid lens are using liquid as lens, and are passed through
The curvature for changing liquid changes focal length.Wherein, liquid lens include oil and two kinds of liquid of water, and this is adjusted by electrowetting effect
The curvature of two kinds of liquid contact surfaces not merged mutually, it is possible to change the diopter of lens, so as to allow infrared camera 22 to realize
Autozoom.
Referring to Fig. 9, in some embodiments, the method for collecting iris of embodiment of the present invention also includes following step
Suddenly：
S111：Infrared camera 22 is controlled to shoot the first image of object to be identified；
S112：The first image is handled to judge whether human eye；With
When human eye be present the collection distance between iris recognition module 20 and object to be identified is obtained into step S12.
Referring to Fig. 10, in some embodiments, iris capturing equipment 10 also includes second control device 14 and processing
Device 15.Step S111 can be realized that step S112 can be realized by processing unit 15 by second control device 14.
In other words, second control device 14 can be used for the first figure of the control shooting object to be identified of infrared camera 22
Picture；Processing unit 15 can be used for：The first image is handled to judge whether human eye；With enter step S12 when human eye be present
Obtain the collection distance between iris recognition module 20 and object to be identified.
Referring again to Fig. 3, in some embodiments, program 41 also includes being used for the instruction for performing following steps：
S111：Infrared camera 22 is controlled to shoot the first image of object to be identified；
S112：The first image is handled to judge whether human eye；With
When human eye be present the collection distance between iris recognition module 20 and object to be identified is obtained into step S12.
Wherein, the first image is infrared image.Human eye in first image be present and show that iris is in infrared camera 22
In visual field.In this way, determine that human eye be present in the first image may insure to get complete iris image.If in the first image not
Human eye be present, electronic installation 100 can prompt object to be identified to the left, to the right, move up or down face so that human eye is fallen into
In the visual field of infrared camera 22.Specifically, electronic installation 100 can add word to show by voice, display word, cardon, voice
Show, cardon adds text importing, voice adds the modes such as cardon to prompt object to be identified to move.
Also referring to Fig. 2 and Figure 11, in some embodiments, electronic installation 100 includes visible image capturing first 60.This
The method for collecting iris of invention embodiment is further comprising the steps of：
S113：Control the second image of the first 60 shooting object to be identified of visible image capturing；
S114：The second image is handled to judge whether human eye；With
When human eye be present the collection distance between iris recognition module 20 and object to be identified is obtained into step S12.
Referring again to Figure 10, in some embodiments, step S113 can be realized by second control device 14, step
S114 can be realized by processing unit 15.In other words, second control device 14 can also be used to control visible image capturing first 60 to clap
Take the photograph the second image of object to be identified；Processing unit can be additionally used in：The second image is handled to judge whether human eye, Yi Ji
When human eye be present the collection distance between iris recognition module 20 and object to be identified is obtained into step S12.
Referring again to Fig. 3, in some embodiments, program 41 also includes being used for the instruction for performing following steps：
S113：Control the second image of the first 60 shooting object to be identified of visible image capturing；
S114：The second image is handled to judge whether human eye；With
When human eye be present the collection distance between iris recognition module 20 and object to be identified is obtained into step S12.
Second image is coloured image.Human eye in second image be present and show that iris is in the visual field of visible image capturing first 60
It is interior.In this way, determine that human eye be present in the second image may insure to get complete iris image.If it is not present in the second image
Human eye, then electronic installation 100 can prompt object to be identified to the left, to the right, move up or down face so that human eye fall into can
See in the visual field of light video camera head 60.
It should be noted that using visible image capturing it is first 60 carry out human eye existence judgement when, infrared camera 22 with
Visible image capturing first 60 should be arranged on adjoining position to ensure that the visual field of infrared camera 22 and visible image capturing first 60 is big
Partly overlap.It is appreciated that iris image is obtained by infrared camera 22, if the visual field of visible image capturing first 60 with
The visual field of infrared camera 22 is not overlapping or lap is smaller, then, it is seen that people be present in the second image that light video camera head 60 is shot
Eye cannot ensure that human eye falls again in the visual field of infrared camera 22.In this way, infrared camera 22 possibly can not photograph human eye with
Obtain complete iris image.
The process in processing piece image with the presence or absence of human eye is described in detail by taking the second image as an example.Second image
For RGB color image.In RGB color space, RGB color is easily influenceed by brightness.Therefore, it is necessary first to by RGB color image
YCrCb images are converted to following formula：
Then, the second image after being changed to color space carries out edge contour extraction process.Specifically, can pass through
Canny operators carry out edge extracting.The core that Canny operators carry out the algorithm of edge extracting has the following steps：First, with 2D height
This Filtering Template carries out convolution to eliminate noise to the second image；Then, the ladder of each pixel grey scale is obtained using differential operator
Angle value, and the gradient direction of the gray scale according to each pixel of Grad calculating, respective pixel edge can be found by gradient direction
The adjacent pixels of gradient direction；Then, each pixel is traveled through, if the gray value of some pixel and on its gradient direction front and rear two
It not is maximum that the gray value of individual adjacent pixel, which is compared, then it is not marginal point to think this pixel value.In this way, it can determine that the
The pixel in marginal position in two images, so as to obtain the image after edge extracting.
Then, Hough circle transformation processing is carried out to the image after edge extracting and whether there is people in the second image to detect
Eye.Hough circle transformation is that one of basic skills of geometry is identified in image procossing.The principle of Hough circle transformation is to scheme
The point of image space is through in circle transformation to parameter space, any on circle is corresponding to three-dimensional conical surface in parameter space；Round
All boundary point pairs answer a conical surface race in parameter space to justify；If the point converted is on same circumference, circular cone race phase
Meet at a bit, the point is the center of circle and radius corresponding to image space.In this way, handle edge extracting according to Hough circle transformation
Do not obtained during rear image circular cone race it is intersecting a bit, then illustrate human eye is not present in the second image.So as to electronic installation 100
Prompting user is moved such that human eye is fallen into the visual field of visible image capturing first 60.
The computer-readable recording medium of embodiment of the present invention includes being used in combination with the electronic installation 100 that can be imaged
Computer program, computer program can be performed by processor 30 to be adopted with completing the iris described in above-mentioned any one embodiment
Diversity method.
For example, computer program can be performed by processor 30 to complete the method for collecting iris described in following steps：
S12：Obtain the collection distance between iris recognition module 20 and object to be identified；
S14：The target focal length of infrared camera 22 is calculated according to collection distance；With
S16：Infrared camera 22 is controlled to shoot the iris image of object to be identified with target focal length.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress used with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium, which can even is that, to print the paper of described program thereon or other are suitable
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, have suitable combinational logic gate circuit application specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although have been shown and retouch above
Embodiments of the invention are stated, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the limit to the present invention
System, one of ordinary skill in the art can be changed to above-described embodiment, change, replace and become within the scope of the invention
Type.
Claims (12)
- A kind of 1. method for collecting iris, for electronic installation, it is characterised in that the electronic installation includes iris recognition module, The iris recognition module includes infrared camera, and the method for collecting iris comprises the following steps：Obtain the collection distance between the iris recognition module and object to be identified；The target focal length of the infrared camera is calculated according to the collection distance；WithThe infrared camera is controlled to shoot the iris image of the object to be identified with the target focal length.
- 2. method for collecting iris according to claim 1, it is characterised in that the electronic installation senses including laser ranging Device, the collection obtained between the iris recognition module and the object to be identified apart from the step of comprise the following steps：The laser range sensor is controlled to detect the collection distance；WithRead the collection distance.
- 3. method for collecting iris according to claim 2, it is characterised in that described to obtain the iris recognition module and institute State collection between object to be identified apart from the step of comprise the following steps：Control the laser range sensor transmission signal light；The laser range sensor is controlled to receive reflected signal light；According to the laser range sensor obtain transmission signal light and reflected signal light time difference data calculate more height away from From；WithDetermine that the maximum in the multiple son distance is the collection distance；Or determine that the intermediate value in the multiple son distance is The collection distance；Or determine that the average value in the multiple son distance is the collection distance.
- 4. method for collecting iris according to claim 1, it is characterised in that the method for collecting iris is in the acquisition institute State collection between iris recognition module and the object to be identified apart from the step of before it is further comprising the steps of：The infrared camera is controlled to shoot the first image of the object to be identified；Described first image is handled to judge whether human eye；WithWhen the human eye be present into it is described acquisition the iris recognition module and the object to be identified between collection away from From the step of.
- 5. method for collecting iris according to claim 1, it is characterised in that the electronic installation includes visible image capturing Head, collection distance of the method for collecting iris between the acquisition iris recognition module and the object to be identified It is further comprising the steps of before step：The visible image capturing head is controlled to shoot the second image of the object to be identified；Second image is handled to judge whether human eye；WithWhen the human eye be present into it is described acquisition the iris recognition module and the object to be identified between collection away from From the step of.
- A kind of 6. iris capturing equipment, for electronic installation, it is characterised in that the electronic installation includes iris recognition module, The iris recognition module includes infrared camera, and the iris capturing equipment includes：Acquisition device, the acquisition device are used to obtain the collection distance between the iris recognition module and object to be identified；Computing device, the computing device are used for the target focal length that the infrared camera is calculated according to the collection distance；WithFirst control device, the first control device are used to control the infrared camera with described in target focal length shooting The iris image of object to be identified.
- 7. a kind of electronic installation, it is characterised in that the electronic installation includes：Iris recognition module；One or more processors；Memory；WithOne or more programs, wherein one or more of programs are stored in the memory, and be configured to by One or more of computing devices, described program include performing the instruction of following steps：Obtain the collection distance between the iris recognition module and object to be identified；The target focal length of the infrared camera is calculated according to the collection distance；WithThe infrared camera is controlled to shoot the iris image of the object to be identified with the target focal length.
- 8. electronic installation according to claim 7, it is characterised in that the electronic installation includes laser range sensor, Described program also includes being used for the instruction for performing following steps：The laser range sensor is controlled to detect the collection distance；WithRead the collection distance.
- 9. electronic installation according to claim 8, it is characterised in that described program also includes being used to perform following steps Instruction：Control the laser range sensor transmission signal light；The laser range sensor is controlled to receive reflected signal light；According to the laser range sensor obtain transmission signal light and reflected signal light time difference data calculate more height away from From；WithDetermine that the maximum in the multiple son distance is the collection distance；Or determine that the intermediate value in the multiple son distance is The collection distance；Or determine that the average value in the multiple son distance is the collection distance.
- 10. electronic installation according to claim 7, it is characterised in that described program also includes being used to perform following steps Instruction：The infrared camera is controlled to shoot the first image of the object to be identified；Described first image is handled to judge whether human eye；WithWhen the human eye be present into it is described acquisition the iris recognition module and the object to be identified between collection away from From the step of.
- 11. electronic installation according to claim 7, it is characterised in that the electronic installation includes visible image capturing head, institute Stating program also includes being used for the instruction for performing following steps：The visible image capturing head is controlled to shoot the second image of the object to be identified；Second image is handled to judge whether human eye；WithWhen the human eye be present into it is described acquisition the iris recognition module and the object to be identified between collection away from From the step of.
- A kind of 12. computer-readable recording medium, it is characterised in that the meter being used in combination including the electronic installation with that can image Calculation machine program, the computer program can be executed by processor to complete the iris capturing described in claim 1 to 5 any one Method.
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| CN201710526025.9A CN107341467A (en) | 2017-06-30 | 2017-06-30 | Method for collecting iris and equipment, electronic installation and computer-readable recording medium |
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| CN109753925A (en) * | 2018-12-29 | 2019-05-14 | 深圳三人行在线科技有限公司 | A kind of method and apparatus that iris feature extracts |
| CN109784246A (en) * | 2018-12-29 | 2019-05-21 | 深圳三人行在线科技有限公司 | A kind of method and apparatus of information association |
| CN110956054A (en) * | 2018-09-26 | 2020-04-03 | 北京中科虹星科技有限公司 | Iris image acquisition method and terminal |
| CN112770032A (en) * | 2020-12-31 | 2021-05-07 | 深兰盛视科技（苏州）有限公司 | Image acquisition method, device, equipment and computer readable storage medium |
| WO2021114886A1 (en) * | 2019-12-12 | 2021-06-17 | 支付宝(杭州)信息技术有限公司 | Iris image acquisition method and device and focusing method and device |
| CN113709353A (en) * | 2020-05-20 | 2021-11-26 | 杭州海康威视数字技术股份有限公司 | Image acquisition method and device |
| WO2022143813A1 (en) * | 2020-12-30 | 2022-07-07 | 杭州海康威视数字技术股份有限公司 | Iris recognition method and apparatus, and electronic device |
| WO2024045446A1 (en) * | 2022-08-30 | 2024-03-07 | 上海闻泰电子科技有限公司 | Iris image capture method based on head-mounted display, and related product |
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