CN205644570U

CN205644570U - Iris identification system with living body detection function

Info

Publication number: CN205644570U
Application number: CN201520674526.8U
Authority: CN
Inventors: 王占亮
Original assignee: Beijing Sharegood Visual Technology Co Ltd
Current assignee: Beijing Sharegood Visual Technology Co Ltd
Priority date: 2015-09-01
Filing date: 2015-09-01
Publication date: 2016-10-12
Anticipated expiration: 2025-09-01

Abstract

The utility model provides an iris identification system with living body detection function, include: light source module for according to the condition of predetermineeing to waiting to detect the iris and/or waiting to detect the iris and launch illumination around, the condition of predetermineeing includes: illumination wave band, irradiant spectrum, light source module's quantity, the distance between a plurality of light source module and the distance between light source module and the light sensation module, the image information who waits to detect the iris after light sensation module is used for gathering illumination and shines, central controller control light source module and light sensation module work, and judge above -mentioned diagnostic information according to corresponding the standard information that related diagnostic information is corresponding, wait with what the assorted judged result corresponded that it is the live body iris to detect the iris sign, above -mentioned system can the degree of depth combine the physiological property and the physical characteristic of eyes to discern the iris, and difficult quilt is tracked and is copied, and the security is better and can combine multiple physiological feature and physics characteristic to discern, and its discernment result reliability is high, and just the practicality is better.

Description

A kind of iris authentication system with In vivo detection function

Technical field

This utility model relates to iris identification field, knows in particular to a kind of iris with In vivo detection function Other system.

Background technology

Along with society and the development of science and technology, various information mutual more frequent, social public security, personal information are pacified The various fields such as complete the most important, airport discrepancys, entry-exit management, management of personal money are handled, mobile payment are required for confirming individual The verity of identity, it is more convenient that one personal identification technology fast and effectively not only makes to live, and also can make life more Safety.And for personal identification technology, authentication techniques based on biological identification technology are maximally efficient, such as: fingerprint, face, Iris, vein, palmmprint etc. identify technology；And in above-mentioned all biological identification technologies, iris recognition technology has height due to it Accuracy rate, high stability, the highly advantage such as antifalsification, uniqueness and be widely used.

Iris identification has been supplied in a lot of field at present, and corresponding iris recognition technology company and product also get more and more, But being as the widely available of iris recognition technology, iris is forged technology and also be will appear from, In vivo detection function will become iris and know The function that other equipment is indispensable, also indicates the height of the technical merit of iris identification equipment；To this, correlation technique provides one Liveliness detection method in iris identification: differentiate whether be live body, the method is the most universal according to pupil zoom function；Above-mentioned pupil The principle of pantography is: comes from pupil and has the function being automatically adjusted luminous flux, and when light is stronger, contracted pupil reduces light and leads to Amount, vice versa, so bright environment pupil is little, dark pupil is big, and its function is the same with camera aperture, this merit of pupil Can guarantee that and had appropriate light to enter eyes under circumstances, blur-free imaging can have been realized, the most do not had the light of excess Burn retina.Using this method, iris identification equipment typically has light source actively to carry out periodically opening and closing operation, If the diameter of pupil has size variation, it was demonstrated that be live body.

But, in the above-mentioned methods, iris identification equipment is detected that pupil has scaling change to be considered as live body, Ke Yitong Cross and play the iris image video of the pupil scaling change recorded in advance to attack equipment, for iris identification equipment by certain Sequential open and close specific light source stimulate pupil scaling, can attack with the video playback apparatus of band light source detecting function Iris identification equipment, when detector senses that iris identification equipment light source is shinny, plays the microcoria iris figure recorded in advance Sheet or image procossing change video pupil size, record in advance when detector senses to play when iris identification equipment light source is closed Big pupil iris picture or image procossing change video pupil size etc., therefore said method is the most tracked and copys.

Inventor finds under study for action, and in prior art, iris identification method based on pupil pantography is the most tracked and imitative Making, so that recognition result reliability is relatively low, practicality is poor.

Utility model content

The purpose of this utility model is to provide a kind of iris authentication system with In vivo detection function, and it can the degree of depth Iris is identified by physiological property and physical characteristic in conjunction with eyes, is difficult to tracked and copys, and safety is preferably and can Combining with multiple physiological feature and physical features, its recognition result reliability is high so that practicality is preferable.

First aspect, this utility model embodiment provides a kind of iris authentication system with In vivo detection function, bag Include: light source module, light sensation module and central controller；

Described light source module, for sending out according to the pre-conditioned surrounding to iris to be detected and/or described iris to be detected Penetrate illumination；Described one or more included in following condition pre-conditioned: the wave band of illumination, the spectrum of illumination, illumination strong Distance between degree, distance and light source module and light sensation module between the quantity of light source module, multiple light source module；Described light Source module includes one or more of following light source: full spectrum light source, broad spectrum light source and narrow spectroscopic light source；Light source module comprises Number of light sources be at least one；Wherein, described light source module includes single source or multiple light source；

Described light sensation module matches with described light source module, for gathering the iris to be detected after described illumination is irradiated Image information, described image information is sent to described central controller；Described image information includes described pre-conditioned right The specific characteristic information answered；Described light sensation module at least includes a photoelectric sensor；Described photoelectric sensor includes following One or more in type: multiband light electric transducer and single band photoelectric sensor；

Described central controller electrically connects with described light source module and described light sensation module respectively, in described iris identification system When system powers on, control described light source module and the work of described light sensation module；And, receive the image letter that described light sensation module sends Breath, judges described characteristic information according to the standard information that the characteristic information in described image information is corresponding, described spy When reference breath matches with described standard information, it is determined that described iris to be detected is living body iris.

In conjunction with first aspect, this utility model embodiment provides the first possible embodiment of first aspect, its In, the lighting system of described light source module includes one or more in the following manner: single source is with preset strength and sequential Lighting system, multiple spectrum light source or multiple light source illuminate simultaneously mode, multiple spectrum light source or multiple light source flash of light shine Bright mode, multiple spectrum light source or multiple light source with the lighting system of default sequential and multiple spectrum light source or multiple light source with Preset the lighting system of modulate intensity；

The image acquisition mode of described light sensation module includes one or more in the following manner: multiple single band photoelectric transfers The mode that sensor gathers simultaneously, the mode that multiple multiband light electric transducers gather simultaneously, multiple single band photoelectric sensors with Preset Timing acquisition mode, multiple multiband light electric transducers in the way of default Timing acquisition, a single band photoelectric transfer Sensor is in the way of default Timing acquisition and a multiband light electric transducer are with default Timing acquisition.

A kind of iris authentication system with In vivo detection function that this utility model embodiment provides, including: light source die Block, for launching illumination according to pre-conditioned to iris to be detected；Light sensation module, for gathering the rainbow to be detected after illumination is irradiated The image information of film；Central controller, when iris authentication system powers on, controls light source module and the work of light sensation module；And, According to the standard information that characteristic information is corresponding, characteristic information is judged, the judgement that characteristic information and standard information are matched Iris identification to be detected corresponding to result is living body iris, in order to living body iris enters follow-up iris registration or identifies stream Journey；Iris identification method based on pupil pantography is the most tracked with prior art in prior art and copys, so that Recognition result reliability is relatively low, and practicality is poor to be compared, and it degree of depth can combine the physiological property of eyes and physical characteristic to rainbow Film is identified, and is difficult to tracked and copys, and safety preferably and can be carried out in conjunction with multiple physiological feature and physical features Identifying, its recognition result reliability is high so that practicality is preferable.

For making above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and Coordinate appended accompanying drawing, be described in detail below.

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme of this utility model embodiment, will use required in embodiment below Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiment of the present utility model, the most should be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used To obtain other relevant accompanying drawings according to these accompanying drawings.

Fig. 1 shows a kind of iris authentication system with In vivo detection function that this utility model embodiment is provided Overall structure schematic diagram；

Fig. 2 shows a kind of iris identification method with In vivo detection function that this utility model embodiment is provided Flow chart.

Fig. 3 show the pul that this utility model embodiment is provided admire hot spot formed principle schematic.

Fig. 4 a, Fig. 4 b, Fig. 4 c, Fig. 4 d and Fig. 4 e show that this utility model embodiment provided the first based on many ripples The imaging system scheme of the iris authentication system application example of section photoelectric sensor imaging；

Fig. 5 a, Fig. 5 b, Fig. 5 c and Fig. 5 d show that the second that this utility model embodiment provided is based on multiband light Another application of the iris authentication system of electric transducer imaging iris authentication system based on multiband light electric transducer imaging The imaging system scheme of example；

Fig. 6 a and Fig. 6 b show the third that this utility model embodiment provides based on comprising single band photoelectric sensing The imaging system scheme of one application example of the iris authentication system of multiple photoelectric sensor imagings of device；

The imaging system scheme of the 4th kind of application example that Fig. 7 provides for this utility model embodiment, based on multiple many ripples The iris authentication system of section photoelectric sensor imaging.

The imaging system scheme of the 5th kind of application example that Fig. 8 provides for this utility model embodiment, based on multiple many ripples The iris authentication system of section photoelectric sensor imaging.

Detailed description of the invention

Below in conjunction with accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clearly Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole realities Execute example.Generally can be next with various different configurations with the assembly of this utility model embodiment illustrated described in accompanying drawing herein Arrange and design.Therefore, below the detailed description of the embodiment of the present utility model provided in the accompanying drawings is not intended to limit Claimed scope of the present utility model, but it is merely representative of selected embodiment of the present utility model.Based on this utility model Embodiment, the every other embodiment that those skilled in the art are obtained on the premise of not making creative work, all Belong to the scope of this utility model protection.

Simple, along with science skill in view of iris identification method based on pupil pantography mostly technology of the prior art The development of art, technology attacking and defending war constantly upgrading, a kind of simple anti-counterfeiting technology is easy to by attacking and defending, the most tracked and copy, from And making recognition result reliability relatively low, practicality is poor.This utility model degree of depth excavates physiology and the physical characteristic of eyes, only Having and possess the same physiology and physical characteristic with human eye, could cheat iris identification equipment, high in technological content being difficult to is broken.

The purpose of this utility model there are provided a kind of iris authentication system with In vivo detection function, has the highest Antifalsification, high in technological content, and native system also can apply in various iris identification product, including long-distance large rainbow Film identification equipment, middle distance iris identification equipment, mobile miniature iris identification equipment.Iris identification of the present utility model is registered General mode is used in identification process, referring specifically to Fig. 1,

This utility model provides a kind of iris authentication system with In vivo detection function, including: light source module 100, Light sensation module 200 and central controller 300；

Light source module 100, for according to pre-conditioned surrounding's transmitting light to iris to be detected and/or iris to be detected According to；One or more included in following condition pre-conditioned: the wave band of illumination, the spectrum of illumination, the intensity of illumination, light source die The distance between distance and light source module 100 and light sensation module 200 between the quantity of block 100, multiple light source module 100；

Light sensation module 200 matches with light source module 100, for gathering the image letter of the iris to be detected after illumination is irradiated Breath；Image information includes the specific characteristic information of pre-conditioned correspondence；

Central controller 300 electrically connects with light source module 100 and light sensation module 200 respectively (can also become central authorities' process Device and central controller), when iris authentication system powers on, control light source module 100 and light sensation module 200 works；And, root Characteristic information is judged by the standard information corresponding according to characteristic information, and is detecting that characteristic information matches with standard information Time, it is determined that iris to be detected is living body iris.

A kind of iris authentication system with In vivo detection function that this utility model embodiment provides, and in prior art In prior art, iris identification method based on pupil pantography is the most tracked and copys, so that recognition result reliability is relatively Low, practicality is poor to be compared, and it degree of depth can combine the physiological property of eyes and iris is identified by physical characteristic, be difficult to by Following the trail of and copy, safety preferably and can be identified in conjunction with multiple physiological feature and physical features, and its recognition result can High by property so that practicality is preferable.

Concrete, light source module 100 in the present embodiment can launch different pre-conditioned under illumination；Such as launch many The illumination of individual different-waveband, such as launch the illumination etc. of multiple different spectrum, and light sensation module 200 is the bar launched according to light source Part and select in order to gather the figure of the iris to be detected irradiated through above-mentioned light source possessing special characteristic information As information.

And the first purpose of central controller 300 is to control light source module 100 and the duty of light sensation module 200, its Second purpose is that the characteristic information according to above-mentioned image information is analyzed processing, and whether judges iris information to be detected with this For living body iris.

Central controller in the present embodiment, when judging that iris to be detected is living body iris, represents that this living body iris is for living Body iris, and this living body iris is sent into follow-up iris registration or identification process；It addition, above-mentioned, there is In vivo detection function Iris authentication system in also include alarm module, central controller when judging that iris to be detected is not meet pre-conditioned, Alarm command can be generated, control corresponding alarm module and report to the police, in order to remind testing staff that this iris does not meets standard conditions, can It can be false iris.

In the present embodiment, in the above-mentioned iris authentication system with In vivo detection function, light source module 100 includes following One or more of light source: full spectrum light source, broad spectrum light source and narrow spectroscopic light source；The number of light sources that light source module 100 comprises At least one；Wherein, light source module 100 includes single source or multiple light source and certain specific light of liveliness detection method Source device such as projection light source, light source module 100 is for liveliness detection and the effect of irradiation iris, according to the liveliness detection side selected Formula and iris authentication system volume select corresponding light source comprising modules.Wherein light source type includes: heat radiation light source；Gas is put Electric light source such as mercury lamp, xenon lamp etc.；Solid luminescence light source is such as: powder electroluminescent light source, thin-film electroluminescent light source, light-emitting diodes Pipe and LASER Light Source etc..

Further, the lighting system of above-mentioned light source module 100 includes one or more in the following manner: single source is with in advance If the mode that intensity and the lighting system of sequential, multiple spectrum light source or multiple light source illuminate simultaneously, multiple spectrum light source or many The mode of individual light source flash illumination, multiple spectrum light source or multiple light source are with the lighting system of default sequential and multiple spectrum light source Or multiple light source is with the lighting system of default modulate intensity；

And above-mentioned light sensation module 200 at least includes a photoelectric sensor；Photoelectric sensor includes with in Types Below Individual or multiple: multiband light electric transducer and single band photoelectric sensor；Further, the image acquisition side of above-mentioned light sensation module 200 Formula includes one or more in the following manner: the mode that multiple single band photoelectric sensors gather simultaneously, multiple multiband lights The mode that electric transducer gathers simultaneously, multiple single band photoelectric sensors in the way of default Timing acquisition, multiple multiband lights Electric transducer is in the way of default Timing acquisition, and a single band photoelectric sensor is with default Timing acquisition, a multiband light Electric transducer is in the way of default Timing acquisition.

It should be noted that above-mentioned default sequential can be understood as order set in advance, and this order set in advance Can be configured as required.

Wherein, above-mentioned light sensation module 200 includes single or multiple light sensitive device, for adopting of liveliness detection and iris image Collection, the liveliness detection mode selected according to system, select corresponding sensing device to form light sensation module 200.Light sensitive device includes Photoelectric conversion device is such as: CCD (Charge-coupled Device, charge coupled cell), CMOS (Complementary Metal Oxide Semiconductor), complementary metal oxide semiconductors (CMOS)) etc. camera, also include the light for liveliness detection The devices such as spectrum collector part, thermal imaging system.

Wherein, photoelectric sensor is made up of a lot of photoelectric sensing unit, and each unit is a pixel, each sensing Unit is all sensing to the widest wave band, therefore to make photoelectric sensor sense band of light interested, and eliminates it The impact of all band, therefore a metafiltration wave material is added on sensing unit top layer, carry out wave band filtration, if the filter on sensing unit top layer Wave plate is the same band, then this photoelectric sensor is single band sensor or claims monochromatic sensor.If for same photoelectricity Sensor difference sensing unit top layer filter plate is not the same band, but multiple wave band, and the sensing list of each wave band Unit is in default aligned transfer, and default rule includes periodically and aperiodicity rule, the arrangement cycle of different-waveband sensing unit Can equally can also be different.The optical signal of all sensing unit collections of each wave band just becomes what this wave band was sensed Image, the image of different-waveband can pass through mathematical transformation method: as interpolation method etc. is processed into equal sized image, such as colour CCD, color cmos are all by filter plate respectively to red R, green G, and blue B is filtered imaging, and last image procossing becomes One width coloured image.Multispectral photoelectric sensor the most of the present utility model or title multiband light electric transducer use different-waveband Being filtered imaging, wherein filtering wave band selects a few sections of wave bands in 380nm-2526nm, selects wave band representative, If centre wavelength is 550nm wave band, brown iris absorptance is larger, and centre wavelength is 850nm wave band, and iris reflex ratio is big, And similarly suitable Asia brown iris and America and Europe are blue, centre wavelength is 940nm wave band, and human tissue absorbs larger, etc. It is different for different wave band human iris and the absorption of tissue and reflection ratio.This utility model selection wave band is A few sections of wave bands in 380nm-2526nm, do not limit concrete wave band, the most do not limit centre wavelength and the wavestrip width of concrete wave band, Purpose be can distinguish iris to the absorption of different-waveband and reflection ratio difference, the example above select several wave bands in reality In life, light source and sensor type are that ratio is more rich, the most cost-saved, but are not intended to concrete choosing of the present utility model Select Band Class.

Preferably, the iris authentication system with In vivo detection function that this utility model provides can be applicable to face The In vivo detection identified, wherein, central controller 300 controls light source module 100 and launches light source, controls light sensation module 200 and gathers Iris to be detected under light source irradiation or the image information around iris to be detected, and enter according to the image information of above-mentioned collection Row processes image, carries out the operations such as iris identification, and it controls to enter iris by the iris to be detected of liveliness detection and registers or know Other flow process, as shown in Figure 2.

S101, whole system initialize, and identification process starts；

S102, launched to iris to be detected by light source module there is pre-conditioned illumination, simultaneously by with above-mentioned light The light sensation module that source module is corresponding gathers the image information with special characteristic information of irradiated iris to be detected；

S103, by central controller then the above-mentioned image information with special characteristic information is analyzed process, and When detecting that above-mentioned result meets specific standard conditions, it is determined that iris to be detected is living body iris.

S104, according to judge living body iris carry out iris registration or identification.

S105, whole living body iris carry out the process of identification and terminate.

Liveliness detection method of the present utility model does not relies on single eye motion, the biology possessed according to eyes Carry out liveliness detection with physiological property, only possess the spectral absorption effect the same with human eye iris pigment, possess and eyes angle The optical reflection effect that film, crystalline lens, retina are the same, is possessed by regulation pupil scaling changed the same with human eye and enters people The luminous flux of eye and then cause the effect of iris texture non-linear zoom, possesses and face and the same stereoscopic three-dimensional of eye and believes Breath, possesses and the biological the same temperature lived and thermoradiation efficiency, possesses the vein tissue the same with biology and just can cheat this The iris authentication system of utility model.Therefore, biopsy method defense technique level of the present utility model is high, it is not easy to attacked Broken.

Concrete, the In vivo detection of the iris authentication system with In vivo detection function of offer of the present utility model is provided The iris identification method of function can have ten kinds, and these ten kinds of methods can be used in any combination so that it is recognition effect is more preferable. Liveliness detection method of the present utility model can also be as the liveliness detection method in face identification system.

In actual applications, according to iris identification equipment size and one or more liveliness detection methods of function selecting；Separately Outward, any biopsy method identical with principle in of the present utility model ten kinds of methods broadly falls into patent of the present utility model guarantor In the range of protecting.Of the present utility model ten kinds of biopsy methods are as follows:

First method is: spectra methods；

Concrete, light source module 100 launches the illumination of at least two spectrum to iris to be detected；Light sensation module 200 gathers The iris to be detected first image information under the illumination of different spectrum, and the first image information is sent to central controller 300；First image information at least includes spectral absorption information；

Spectral absorption information in first image information is analyzed by central controller 300, and meets the analyzing knot During one standard conditions, it is determined that iris to be detected is living body iris；First standard conditions include one or more in following information: The illumination different iris of irradiation of different spectrum obtains in the iris texture definition difference in image information and image information Iris, sclera, pupil, eyelid contrast are different.

Concrete, the principle utilizing spectra methods is as follows: according to the optical characteristics of iris, iris is to different spectrum Light absorption, reflection, scattering ratio are different, and iris is coloured the most under white light illumination, and specifically which kind of color is certainly Due to the quantity of iris tissue pigment and there is the degree of depth, pigment amount and to there is the degree of depth be to have in Aisan and occidentals's iris Difference, iris color is different the most under visible light, either the iris of which kind of color, to different wave length radiation light-wave Absorption and reflection ratio be different, therefore to different discriminating of ratio of spectral absorption, reflection can be according to iris No for living body iris, i.e. whether meet the absorption line of iris biological tissue according to absorption curve and differentiate whether be live body rainbow Film.Therefore, this method can use full spectrum light source to irradiate iris, uses spectrometer collection spectral information to believe according to spectral absorption Breath determines whether to meet living body iris tissue characteristics, and then determines whether live body.

The carrying out of multiple spectrum that this method may be used without quantization detects, and multispectral wave-length coverage belongs to 380nm-2526nm In wavelength band, the wave band wherein used includes at least two wave bands, or uses more wave band.In this method, equally Under the different spectroscopic light sources of radiant intensity irradiate, application on human skin and eyes each several part tissue are not to absorption and the reflection ratio of light source The same, such as Asia brown iris, with 550nm, 650nm under same intensity, the iris figure that 850nm and 940nm irradiates Seeming different, it is dark and almost without iris texture that 550nm and 650nm irradiates lower iris image ratio, 850nm irradiation Iris image is brighter and has an iris texture, and the iris image that 940m irradiates ratio is dark but have iris texture；If forgery rainbow Film, texture is all to exist and picture contrast is substantially the same；Similarly for the iris texture of other colors to different-waveband Imaging be also different, so being no matter that any iris selects suitable multiple wave bands can carry out liveliness detection, this Method is applicable to all ethnic groups.

The light source module 100 using this method iris authentication system includes multispectral light source, its objective is to realize different ripple The radiation of light source iris of section.Wherein, multispectral light source can be by single and multiple full spectrum light sources or broad spectrum light source: mercury lamp, Xenon lamp, LED etc. form.Can also multiple narrow spectroscopic light sources combination, such as: different wave band LED groups with become complex spectrum light source.Its In, the light source lighting system being made up of multiple narrow spectroscopic light sources can be in the way of employing makes different spectroscopic light source illuminate simultaneously, also Can be in the way of employing makes different spectroscopic light source illumination with certain sequential successively triggering, it is also possible to different modulate intensity Respectively different spectrum segment light sources are carried out the lighting system of intensity modulated.

The light sensation module 200 of this method includes the device that can carry out multispectral collection, can select spectra collection instrument, Multispectral photoelectric sensor or title multiband light electric transducer can also be selected, it is also possible to select multiple single band light to conduct electricity sensor Combination.Wherein, the photoelectric sensing module of multiple single band sensor combinations, each monochromatic sensor filtering wave band is different 's.Wherein, filtering wave band is a few sections of representative wave bands in 380nm-2526nm.For multiple single band sensor groups The photoelectric sensing module closed, each single band photoelectric sensor can gather image with timesharing with certain sequential respectively, it is possible to To gather image simultaneously.

In this method, the switch of central processing unit controls light source module 100, sequential and intensity modulated, central authorities process single Unit controls switch and the sequential of light sensation module 200, contrasts according to the image of each wave band imaging, calculates difference, it is determined that Whether it is live body, then carries out iris registration or identification process if live body.

Second method is: spot separation estimation eyeball method；Light source module 100 at least two and each two light source module 100 are respectively provided with predeterminable range, and each light source module 100 all launches the light of preset strength from different positions to iris to be detected According to；

Light sensation module 200 gathers the iris to be detected second image information under the illumination of diverse location light source, and by Two image informations send to central controller 300；Second image information includes: between at least two hot spot and each two hot spot Distance；

Central controller 300 extract each light source module 100 irradiate under the second image information in hot spot, and according to The spacing between distance and light source module 100 between hot spot, calculates corneal curvature radius, and at the corneal curvature calculated half When footpath and default corneal curvature radius threshold value match, it is determined that iris to be detected is live body.

Concrete, the principle of spot separation estimation eyeball method is as follows: due to the reflection action of ocular surface, by the light in front Source pools a hot spot in eyes, if the light source of two known distances irradiates eyes from diverse location, and can basis The spacing of Liang Ge hot spot judges the radius of curvature of eyeball, if meet the size of human eye.According to reflecting sphere optical imagery Formula 1/s+1/s '=2/r, wherein s is object distance, and s ' is image distance, lateral magnification m=y '/y=s '/s；Camera lens imaging is public Formula 1/s+1/s '=1/f, for the optical parametric of camera it is known that and object distance or iris physical size, iris image size, light The parameters such as source physical distance, light spot image spacing can extrapolate radius of curvature r of detected spheroid.

In the case of light source and camera distance are not far, it is the reflection of cornea in fact when human eye faces camera, therefore we What method calculated is the radius of curvature of cornea, and the threshold value being met eye cornea radius of curvature by setting judges that detected spheroid is No for human eye.

The radius conversion method of any two hot spot is selected when this method includes using multiple light source to irradiate.The light of this method Source module 100 including at least two light sources having certain distance, light source and light source relative to position can independent assortment, light source and camera Position relatively can independent assortment.The light source of this method can be the same band, it is also possible to be different-waveband.The light sensation mould of this method Block 200 comprises the photoelectric sensor of sensing this method corresponding radiation source wavelength.Central controller controls light source module 100 irradiates Iris, controls light sensation module 200 and gathers iris, determine whether mankind's human eye according to processing result image, if it is carry out rainbow Film registration or identification process.

The third method is: hot spot dot matrix shape method；Light source module 100 is multiple, and multiple light source modules 100 are combined into pre- If shape launches light source to iris to be detected；

Light sensation module 200 gathers the iris to be detected 3rd image information under multiple light source modules 100 irradiate, and by the Three image informations send to central controller 300；3rd image information at least includes the shape information of hot spot；

Light spot shape information in 3rd image information is analyzed by central controller 300, and at each hot spot During the position consistency of the light source module 100 that shape information is all lighted with the corresponding moment, it is determined that iris to be detected is living body iris.

Concrete, when multiple light source is comprised for light source module 100, difference can be combined into according to multiple light source random packet Whether the lighting system of dot matrix shape, meet actual hot spot array configuration according to the shape of shooting hot spot and determine whether for people Eye.

The light source module 100 of this method is including at least two light sources having certain distance, and light source can relative to position with light source Independent assortment, light source can independent assortment relative to position with camera.The light source of this method can be the same band, it is also possible to be different Wave band.The light sensation module 200 of this method comprises the photoelectric sensor of sensing this method corresponding radiation source wavelength.Central controller Control to be combined into random dot matrix with certain sequencing contro light source module 100 and irradiate iris, control light sensation module 200 and gather rainbow Film, according to gathering the processing result image of image and modulation of source sequential and dot matrix shape comparing result determines whether mankind people Eye, if it is carries out iris registration or identification process.

4th kind of method is: pupil and iris texture pantography；Light source module 100 includes visible light source module 100 He Iris imaging band of light source module 100；

Visible light source module 100 launches visible ray with predetermined luminance to iris to be detected, is used for stimulating pupil to put Big and reduce；Iris imaging band of light source module 100 irradiates iris to be detected with preset strength, in order to shoot iris texture letter Breath；

Light sensation module 200 gathers the iris to be detected 4th image information under the irradiation of above-mentioned light source, and by the 4th figure As information sends to central controller 300；4th image information at least includes: the change information of pupil size and iris texture Change information；

Central controller 300 judges the change information of the pupil size in the 4th image information and the change letter of iris texture Whether breath meets the second standard conditions, and when testing result is the second standard conditions, it is determined that iris to be detected is live body；Second Standard conditions include: on the low side in brightness or close time, pupil size is in what magnifying state and iris texture were compressed and compressed Iris texture creates non-linear radioactivity deformation；And/or higher in brightness or when opening the brightest pupil be in deflated state and Iris texture is put by expansion and is expanded the iris texture put and all creates non-linear radioactivity deformation.

Concrete, when there being the band of light in the range of visible ray 380nm-780nm to irradiate eyes, eye pupil can be according to light Intensity zoom in and out, owing to pupil size occurs corresponding change, and then cause iris texture that corresponding deformation also occurs, this The iris deformation caused owing to pupil occurs to scale is non-linear activity, and the iris texture deformation degree of nearly pupil is with near The iris texture deformation degree of sclera is different.If lighting source comprises the wave band making iris texture imaging accordingly, I.e. iris texture can be collected, can sentence according to the deformation that pupil occurs relative to change and the iris texture of iris dimensions Whether fixed is live body, if simple pupil changes relative to iris dimensions, but iris texture does not deforms upon, and illustrates to use Person has worn the false iris of forgery-inhibited pattern.

Light source module 100 lighting system of this method uses the mode of intensity modulated, comprises simple light on and off operation with strong The change of degree size.The light source type that this method uses can be to comprise visible light wave range that pupil changes and make iris stricture of vagina The broadband light source of reason imaging, it is also possible to be the visible light wave range making pupil change and the multiple ripples making iris texture imaging Section combined light source.The light sensation module 200 of this method can be to gather multispectral photoelectric sensor or the title of the method light source wave band Multiband light electric transducer, it is also possible to be the multiple single band photoelectric sensors combination that can gather this light source wave band.In this method Centre controller 300 controls light source module 100 and light sensation module 200, with the light source strength of certain timing modulation light source module 100 Degree, processes the iris image of collection, according to pupil relative to iris dimensions intensity of variation and iris deformation characteristics and It is made to determine whether it is live body with modulation of source sequential comparing result, if it is carries out iris registration or identification process.

Fifth method is: iris texture contrast and rich matching type；Light source module 100 is launched to iris to be detected The light source that the intensity of light source gradually changes；

Light sensation module 200 gathers the iris to be detected 5th image information under light source module 100 irradiates, and by the 5th figure As information sends to central controller 300；5th image information at least includes: the texture density of iris and texture contrast；

5th image information is analyzed by central controller 300, and when testing result meets three standard conditions, sentences Fixed iris to be detected is living body iris；3rd standard conditions at least include: the texture density of iris is along with the enhancing of intensity of illumination And change is big, iris texture contrast becomes along with the increase of intensity of illumination greatly, texture density the subtracting along with intensity of illumination of iris Diminish less and iris texture contrast diminishes along with the minimizing of intensity of illumination.

Concrete, it is very big that the intensity of light source presents impact to iris texture, and some iris texture details must be at light source strength Degree just can present when reaching a certain amount of, if in the case of the intensity of light source is more weak, the texture of iris only presents some textures And the contrast ratio of iris texture image is relatively low, when the intensity of light source increases, some iris texture slowly presents, and iris The contrast of texture also can increase, therefore can by the intensity of modulated light source and then rich according to iris texture and contrast Degree judges that iris is whether as live body.

It is can to make iris stricture of vagina in 380nm-2526nm wavelength band that light source module 100 in this method comprises optical source wavelength The light source that reason presents, the light sensation module 200 of this method comprises the photoelectric sensor of sensing this method light source wave band.In this method Centre controller 300 controls the light source module 100 intensity with certain timing modulation light source, controls light sensation module 200 and gathers iris Image, by image procossing according to the contrast of iris texture and rich change and the contrast of source intensity modulation sequential Determine whether live body, if it is carry out iris registration or identification process.

6th kind of method is: pul is admired light spot shape criterion；Light source module 100 at least two, and each two light source There is between module 100 predeterminable range, between light source module 100 and light sensation module 200, there is predeterminable range；

Light source module 100 launches light source to iris to be detected respectively；

Light sensation module 200 gathers the iris to be detected 6th image information under the irradiation of light source module 100, and by the 6th Image information sends to central controller 300；6th image information at least includes that pul is admired light spot shape；

The shape of the pul hot spot by the emperor himself in the 6th image information is analyzed by central controller 300, and at distance light sensation The pul hot spot by the emperor himself of light source module 100 correspondence that module 200 is nearer is circular halation hot spot such as grade, in distance light sensation module 200 The pul hot spot by the emperor himself of light source module 100 correspondence farther out is the non-halation hot spot that waits, and distance light sensation module 200 diverse location light source Module 100 radiate the pul on formed image admire light spot shape different time, it is determined that iris to be detected is live body.

Concrete, when light source irradiates eyes, respectively cornea and lenticular inside and outside reflect, forms 4 layers of pul by the emperor himself Hot spot, makes first, second, third, fourth pul admire hot spot respectively, and different layers pul spot intensity of admiring is different.Such as Fig. 3 Shown in, it is assumed that human eye faces the photoelectric sensor gathering iris, if light spacing photoelectric sensor is close, i.e. three's approximation exists On one axis, 4 layers of pul hot spot by the emperor himself can overlap, and forms a symmetrical halation hot spot, if light source deviation photoelectric transfer Sensor, irradiates eyes at an angle, and 4 layers of pul hot spot by the emperor himself will not overlap, and will form an asymmetrical beam halation Speckle, therefore according to eye gaze direction, light source position, the difference of camera position, the admire shape of hot spot of 4 layers of pul is also the most different, So irradiating eyes, according to pul light spot shape by the emperor himself it is determined that whether be people with the plural light source having relative distance Ocular structure, and then conclude whether be live body.

The light source module 100 of this method is including at least two light sources having certain distance, and light source can relative to position with light source Independent assortment, light source can independent assortment relative to position with camera.The light source of this method can be the same band, it is also possible to be different Wave band.The light sensation module 200 of this method comprises the photoelectric sensor of sensing this method corresponding radiation source wavelength.Central controller Controlling light source module 100, the intensity modulating different light source with certain sequential respectively is irradiated iris, controls light sensation module 200 gather iris, determine whether mankind's human eye according to the result of hot spot on image, if it is carry out iris registration or knowledge Other flow process.

7th kind of method is: bright pupil dark pupil method；Between light source module 100 at least two and each light source module 100 There is predeterminable range, between light source module 100 and light sensation module 200, there is predeterminable range；

Each light source module 100 launches light source to iris to be detected respectively；

Light sensation module 200 gathers the iris to be detected 7th image information under light source module 100 irradiates, and by the 7th figure As information sends to central controller 300；7th image information includes the luminance state of pupil image；

The luminance state of the pupil image in the 7th image information is analyzed by central controller 300, and is analyzing knot When fruit meets four standard conditions, it is determined that iris is living body iris；4th standard conditions include: light source module 100 is apart from light sensation When module 200 is nearer the pupil image of correspondence collection show as bright pupil and light source module 100 apart from light sensation module 200 farther out time pair The pupil image that should gather shows as dark pupil.

Concrete, when gathering the photoelectric sensor of iris and lighting source when close, face photoelectric sensing at eyes During device, the light that light source sends is the reflection of blood capillary on retina again after pupil, becomes the most on the photosensor Occur that red eye phenomenon principle is the same during as the pupil that one-tenth is the brightest, referred to as bright pupil phenomenon, with photograph, if light source distance camera Have a certain distance, on retina reflect light will not imaging on the photosensor, therefore present dark pupil phenomenon, therefore can root Method differentiates live body accordingly.

The light source module 100 of this method is including at least two light sources, and one of them light source distance camera distance is close, additionally Light source distance camera certain distance.The light source of this method can be the same band, it is also possible to be different-waveband.The light sensation of this method Module 200 comprises the photoelectric sensor of sensing this method corresponding radiation source wavelength.Central controller controls is with certain sequential Control light source module 100 and irradiate iris, control light sensation module 200 and gather iris, according to gather image processing result image and Modulation of source sequential comparing result determines whether mankind's human eye, if it is carries out iris registration or identification process.If it is our Method uses the light source of two wave bands respectively as bright pupil and dark pupil light source, and also comprising can be to the photoelectric sensing of two wave band imagings Device, central controller 300 can or the modulation of same oscillator intensity, now system the brightest with two wave band light sources of con current control It is not easy tracked, adds the safety of system.

8th kind of method is: vein detection method；Light source module 100 around human eye or human body face vein launch The infrared light sources of specific wavelength；Light source includes the infrared band making vein imaging and does not make the non-infrared band of vein imaging；

Light sensation module 200 gathers around eyes to be detected or the human body face the 8th image under light source module 100 irradiates Information, and the 8th image information is sent to central controller 300；8th image information at least includes vein texture；

8th image information is processed by central controller 300, and is detecting that vein texture state symbol closes the 5th mark During floating screed part, it is determined that iris to be detected is live body；5th standard conditions at least include: have vein pattern under infrared band irradiates Manage and all there is no vein texture under non-infrared band irradiates.

Concrete, there is a lot of vein such as around eyes or on face: angular vein, external nasal veins, supratrochlear veins etc., by The blood red speciality have absorption infrared ray in blood, therefore when there being the infrared ray radiation vein of specific wavelength, spy Determine unexpectedly to present under the shooting of infrared photoelectric sensor the texture of vein, can be according to the vein picture under infrared radiation and other ripple Non-vein picture under section light-wave irradiation carries out contrast and identifies whether be live body.

In the light source module 100 of this method, light source wave band includes outer red wave band and non-infrared band, and light source module 100 can To be made up of broad spectrum light source, it is also possible to be made up of multiple narrow spectroscopic light sources.The photoelectric sensor of the light sensation module 200 of this method The light source wave band of this method can being included, infrared and non-infrared band is photosensitive, light sensation module 200 can be by single multispectral light Electric transducer forms, it is also possible to be made up of multiple single spectrum sensors.Central controller 300 controls light source module 100 and light sensation Module 200, according to the infrared picture comprising vein gathered and the picture not comprising vein, carries out image procossing, it is determined whether For live body.This method can select the lighting system of infrared light supply and other wave band light source according to light source module 100 component type, If light source module 100 is made up of multiple spectroscopic light sources, multiple light source can be selected concurrently to launch, it is also possible to select with certain Sequential polled transmission, wherein burse mode more safety, it is not easy to tracked.Same light sensation module 200 is if having many During the combination of individual single spectrum photoelectric sensor, gather pictorial manner and can also use multiple sensor burse mode, or use multiple Sensor is acquired with certain sequential.The light source of this method can drive to use simple light on and off mode, it would however also be possible to employ The mode of intensification modulation drives.

9th kind of method is: thermal radiation of body method；Light sensation module 200 includes one or more in following device: thermal imagery Instrument and temperature sensor, thermal imaging system gathers the heat radiation images of human body spontaneous, and temperature sensor gathers the temperature information of human body；

Central controller 300 calculates iris to be detected or the temperature of human body and temperature according to heat radiation images and temperature information Degree distribution pattern, and when iris to be detected or human body temperature and temperature profile pictograph close characteristics of human body, it is determined that rainbow to be detected Film is live body；

Concrete, the temperature of any object is impossible to reach absolute temperature zero degree, as long as object has temperature, atom is the most not It is static, meeting emission of thermal radiation, the heat radiation that therefore can produce due to temperature according to human body, determine whether live body. The light sensation module 200 of this method includes the device such as thermal imaging system sensing thermal radiation of body or claims infrared camera, central controller 300 Picture according to thermal imaging system or title infrared camera collection calculates temperature and Temperature Distribution figure and collected tissue profile pair Ratio result, concludes whether be live body.The collected object of this method can be eye portion, or face, or face local, or people Body, or the tissue such as body local.

Tenth kind of method is: three-dimensional information detection method；Three-dimensional information detection method, due to organization of human body include head, face, Eye is all into three-dimensional three-dimensional shape, therefore can detect whether collected object three-dimensional feature meets the mankind according to three-dimensional rebuilding method Feature, determines whether live body according to processing result image.

The three-dimensional rebuilding method of this method can be three kinds: the first is Studies About Reconstruction of Three-Dimension Information side based on polyphaser imaging Formula；The second is based on stereoptics method Studies About Reconstruction of Three-Dimension Information mode；The third is three-dimensional reconstruction based on predetermined pattern projection Mode；4th kind is based on stereoptics method Studies About Reconstruction of Three-Dimension Information mode；The third is Three-dimensional Gravity based on predetermined pattern projection Build mode；

Concrete, the first is Studies About Reconstruction of Three-Dimension Information mode based on polyphaser imaging: can use polyphaser imaging Three-dimensional stereoscopic visual method for reconstructing, at least two photoelectric sensor shoots picture from diverse location, according to processing result image also Former three-dimensional information.The light source of this method can be the same band, it is also possible to be different-waveband.The light sensation module of this method comprises sense Answer multiple photoelectric sensors of this method corresponding radiation source wavelength.Central controller controls light source module carries out intensification modulation, Controlling light sensation module and gather picture, the processing result image according to gathering image determines whether live body, if it is carries out rainbow Film registration or identification process.

Concrete, the second is based on stereoptics method Studies About Reconstruction of Three-Dimension Information mode；Based on stereoptics method three-dimensional information Reconstruction mode includes: light source module includes the light source of at least three different directions；Light sensation module gathers respective direction illumination respectively The 9th image information；Central controller controls light source module carries out intensification modulation, controls light sensation module and gathers picture the (the i.e. the 9th Image information), determine whether live body according to gathering processing result image, if it is carry out iris registration or identification process.

Concrete simplest stereoptics method uses the source of three different directions light, irradiates from three different directions and treats Surveying thing, open each light source respectively and shoot picture, comprehensive three photos also use the perfect diffusion m odel in optics to solve thing The gradient vector of surface, i.e. can get threedimensional model after the integration of vector field.

Concrete, the third is based on predetermined pattern projection three-dimensional information reconstruction mode；The three-dimensional rebuilding method of this method Three-dimensional rebuilding method based on periodic patterns projection can be used, if parallel stripes sciagraphy is by parallel equally spaced striated Pattern projection, at collected body surface, is shot from certain angle by single or multiple cameras, if parallel stripes is projected in On planar object, the spacing of striped will be equidistant or linear monotone variation, if be projected on the object of three dimensional change, When the shooting photo of certain direction, parallel stripes can be distorted, and therefore can become according to the change of fringe spacing in shooting image Gesture also calculates, and can restore three-dimensional information.The light source module of this method includes projection arrangement, can produce parallel stripe patterns also Being incident upon body surface imaging, the optical source wavelength of this method is at 380nm-2526nm wavelength band, the light sensation module bag of this method Single or multiple the photoelectric sensor containing sensing this method corresponding radiation source wavelength.Central controller controls controls projection module and enters Row parallel stripe patterns projects, and controls light sensation module and gathers picture, and the result according to gathering image determines whether live body, If it is iris registration or identification process are carried out.The projection pattern of this method can also use other cyclically-varying pattern such as Grid-like etc..

Ten kinds of biopsy methods that iris authentication system of the present utility model is comprised, can be according to rainbow when actually used The size of film identification equipment and level of security select several biopsy methods, therefore according to the In vivo detection selecting varying number Method, embodiment type is a lot, but the example of related to this utility model biopsy method broadly falls into this utility model and protects In the range of protecting.Below in conjunction with concrete accompanying drawing, to the iris identification system with In vivo detection function provided by the utility model Several embodiments in system are explained in detail.

Embodiment 1

Iris authentication system as shown in fig. 4 a, wherein light source module selects the LED combination of three wave bands, comprises 850nmLED 110,940nmLED 120, white light compensating lamp LED 130, wherein, light sensation module select can to 850nmLED 110, 940nmLED 120, the multiband light electric transducer CMOS camera 201,850nmLED that white light compensating lamp LED 130 is the most photosensitive 110 and 940nmLED 120 apart from CMOS camera 201 certain distance, can realize dark pupil phenomenon under the lighting system of this distance, Other optional position of 850nmLED 110 and 940nmLED 120 is on track 141, as shown in Fig. 4 b, Fig. 4 c, and white light filling Lamp LED 130 apart from close, realizes bright pupil phenomenon, white light compensating lamp apart from CMOS camera 201 under the lighting system of this distance Other optional position of LED 130 is on track 142, white light compensating lamp LED 130 and 850nmLED 110 or and 940nmLED 120 have certain distance, can realize double spot location cornea radius under the lighting system of this distance, this example iris identification system Optional 1 spectra methods that uses of system biopsy method, 2 spot separation estimation eyeball methods, 3 hot spot dot matrix shape methods, 4 pupils With iris texture pantography, 5 iris texture contrasts and rich matching type, 6 puls admire light spot shape criterion, and 7 bright pupil are dark Pupil method, 8 vein detection methods.

1, spectra methods embodiment, central controller 300 modulates 850nmLED110,940nmLED 120, in vain simultaneously The intensity of color light compensating lamp LED 130, control CMOS camera 201 gather three spectrum pictures, by regulate each light-source brightness and The luminance gain of each channel acquisition image so that 850nmLED 110 and 940nmLED 120 radiates when gathering common objects Imaging brightness is basically identical.Central controller 300 carries out image procossing, if 850nmLED 110 radiates to the image gathered The iris texture of the become image of collected object is clear, and 940nmLED 120 radiates the iris of the become image of collected object stricture of vagina Reason still ratio is dark, and the skin of people also ratio is dark, and white light compensating lamp LED130 radiates formed by Aisan's brown iris ethnic group Image does not has iris texture and iris portion more black, and 850nmLED 110,940nmLED 120, white light compensating lamp LED 130 to radiate iris in become images, sclera, pupil contrast the most different, can be concluded that as live body.

2, spot separation estimation eyeball method embodiment, central controller 300 by three kinds of spectrum picture fusion treatment, Determine the spacing of hot spot, according to information such as the spacing between known luminaire, converse corneal curvature radius by imaging formula, Determine whether for human body live body by comparing with predetermined threshold value.

3, hot spot dot matrix shape method embodiment, for shown in Fig. 4 c, 850nmLED 110,940nmLED120, white is mended In triangular shape between light modulation LED 130, any two kinds of LED can be lighted respectively with certain sequential, by analyzing certain moment light Judge whether the most consistent with the light source position that the corresponding moment lights of wire of speckle composition is live body.

4, pupil and iris texture pantography, central authorities' control module controls 300 and lights 850nmLED 110 with certain brightness, Simultaneously with the brightness of certain timing modulation white light compensating lamp LED 130, if gathering pupil on picture when brightness is on the low side or closes Hole is to amplify, and iris texture is compressed；If gathering pupil on picture when brightness is higher or opens the brightest to reduce, and Iris texture is put by expansion, and the iris texture that the iris simultaneously compressed and expansion are put there occurs non-linear radioactivity deformation, it is possible to determine that It it is live body.

5, iris texture contrast and rich matching type, central authorities' control module controls 300 with certain timing modulation The radiant intensity of 850nmLED 110, gathers iris image, if radiant intensity is higher respectively under different radiant intensity The iris texture specific intensity of radiation gathered is larger than the iris texture contrast gathered time relatively low, and iris texture is more rich, can To be judged to live body.

6, pul is admired light spot shape criterion, and central controller 300 is adopted by analyzing white light compensating lamp LED130 radiation Collection the become image of object, 850nmLED 110 radiates the become image of collected object and 940nmLED 120 radiates collected thing The become image of body, analyzes each wave band radiation of light source become pul of collected object and admires light spot shape, if for light source with It is circular to wait halation hot spot that the closer white light compensating lamp LED 130 of CMOS camera 201 radiates the pul hot spot by the emperor himself of imaging, For radiating the become image of collected object away from the 850nmLED 110 of CMOS camera 201 and 940nmLED 120 radiates quilt The pul light spot shape by the emperor himself gathering the become image of object is non-grade on halation hot spot, and image formed by diverse location radiation of light source Pul light spot shape of admiring different, can conclude that it is live body.

7, bright pupil dark pupil method, central controller 300 is by analyzing the white light compensating lamp LED 130 near CMOS camera 201 Radiate the become image of collected object with away from CMOS camera 201 850nmLED110 radiate the become image of collected object or Person 940nmLED 120 radiates the become image of collected object, if it find that the white light compensating lamp closer with CMOS camera 201 LED 130 radiates the pupil of imaging and compares away from CMOS camera 201, and 850nmLED 110 radiates the become image of collected object Or the pupil that 940nmLED 120 radiates the become image of collected object is brighter, can be concluded that as live body.

8, vein detection method, central controller 300 radiates collected object by analysis white light compensating lamp LED 130 and is become Image radiates the become image of collected object with 850nmLED 110, if it find that 850nmLED 110 radiates collected object institute Become image radiate imaging with white light compensating lamp LED 130 compared with at the more vein textural characteristics of specific location, permissible Predicate live body.

Same, if the iris authentication system of this method, 850nmLED 110,940nmLED 120, white light compensating lamp LED 130 position is adjacent, and as shown in Fig. 4 d, Fig. 4 e, now some of them biopsy method will be not enabled, as between 2 hot spots Away from estimation eyeball method, admire light spot shape criterion additionally for intravital method such as 6 pul, 7 bright pupil dark pupil method, also will be according to reality Whether ideal determines whether to be activated for condition and result.For Fig. 4 d, 850nmLED 110,940nmLED 120, white light filling The possible position of lamp LED 130 is on track 141, if having certain distance between each light source, then 2 spot separation estimate eye Ball, 6 puls light spot shape criterion by the emperor himself also can enable.Other possible position for Fig. 4 e, 940nmLED 120 is track On 143, other possible position of white light compensating lamp LED 130 is on track 144, if having certain distance between each light source, Then 2 spot separation estimation eyeball method, 6 puls light spot shape criterion by the emperor himself also can enable.

Embodiment 2

Such as Fig. 5 a, shown iris authentication system, in order to simplify device hardware and equipment volume, it is few that this example compares Fig. 4 a In 940nmLED 120, Fig. 5 a similar with Fig. 4 d illumination layout, similar with Fig. 4 e illumination layout in Fig. 5 b, in Fig. 5 c and Fig. 4 a light Being similar to according to layout, therefore biopsy method and control strategy are also the same with examples detailed above, and unique except for the difference that do not have light source 940nmLED 120, therefore for spectra methods, only analyzes 850nm and the imaging spectral information of white light source, corresponding CMOS Camera 201 will be also the multiband light electric transducer the most photosensitive to white light source and 850nm wave band.For in this utility model Each light source in embodiment, such as 850nmLED 110,940nmLED 120, white light compensating lamp LED 130 light source such as grade can have Single led composition is also by being made up of multiple LED, and the LED that therefore there will be same light source divides two groups to be positioned at diverse location Place, as fig 5d, two groups of 850nmLED 111,112, not at same position, now not only improve illumination uniformity, the most more Can effectively utilize biopsy method.

Embodiment 3

Owing to processing technology and the popularity of multiband sensor can affect its price, therefore can use the most universal Photoelectric sensor combination realize iris authentication system of the present utility model.As shown in Figure 6 a, light sensation module is by sensing visible ray Wave band CMOS camera 211 and the sensing 850nm adjacent composition of wave band CMOS camera 221, light source module is by 850nmLED 111,112 Forming with white light compensating lamp LED 130, central controller controls light source module and light sensation module, CMOS camera 211 is only to white Light compensating lamp LED 130 radiation light-wave imaging, CMOS camera 221 is only to 850nmLED 111,112 radiation light-wave imaging, this example Comparing an example is by multiband light inducer CMOS 201, changes two single band photoelectric sensors 211,221, imaging into Effect is the same, and therefore the biopsy method of this example is the same with a upper example implementation.In actual applications, permissible According to practical situation, CMOS camera 211 and CMOS camera 221 is placed the position of certain distance, white light compensating lamp LED 130 In the middle of two cameras, as shown in Figure 6 b, the embodiment the same with Fig. 6 a, wherein bright pupil dark pupil method are equally realized To choose whether to enable apart from the distance of camera according to white light compensating lamp LED 130.

Embodiment 4

As it is shown in fig. 7, use two multiband light electric transducer CMOS cameras 201,202, its layout type and Fig. 6 b phase Seemingly, difference be respectively multiband light electric transducer CMOS camera 201,202 is substituted sensing visible light wave range CMOS camera 211 with Sensing 850nm wave band CMOS camera 221, additionally 850nmLED distributing position has increase, such as 111,112,113,114 institute in Fig. 7 Showing, this example feature is can to better profit from the different dot matrix of multiple light source position composition to realize the inspection of hot spot dot matrix shape method live body Survey method.Additionally for this example owing to introducing dual camera, another biopsy method therefore can be realized, 10 Three-dimensional information detection method.

10 three-dimensional information detection methods, central controller 300 controls light sensation module and light source module, by CMOS camera 201, The 202 two width images simultaneously gathered process, and converse the three-dimensional information of collected object according to principle of stereoscopic vision, if Meet the feature of people, then can be concluded that it is live body.

Embodiment 5

As shown in Figure 8, in this example iris authentication system light sensation module formed 201 by single multiband light electric transducer, Thermal imaging system 231 and spectrogrph 241, compare other case this example light source module and add spectral emissions device 151 and projection Device 161.Therefore this example is in addition to realizing the biopsy method of previous examples, it is also possible to realize 9 thermal radiation of body methods, Three-dimensional information detection method based on periodic patterns projection and spectra methods based on spectrometer analysis can also be realized.

For 1 spectra methods, central controller 300 controls spectral emissions device 151 and launches full spectrum, according to spectrogrph 241 curves of spectrum gathered are analyzed, if with the presence of human iris's absorption line, if it has, can conclude that is live body.

For 9 thermal radiation of body methods, the image that central controller 300 gathers according to thermal imaging system 231 is analyzed, and calculates Going out temperature and whether figure distribution shape meets human characteristic, if met, then predicating live body.

For 10 three-dimensional information detection methods, central controller 300 controls projection device 161 and projects equidistant bar paten and exist Collected body surface, is analyzed according to the image that CMOS camera 201 gathers, according to pattern form and variation characteristic and then also Former go out three-dimensional information, if meeting human characteristic, then predicate live body.Additionally can also use three-dimensional based on stereoptics method Infomation detection method, central controller 300 control respectively position different 111,112,113,114 with certain sequential point respectively Bright, central controller 300 controls CMOS camera 201 and gathers corresponding image, restores three-dimensional information according to corresponding principle, if Meet human characteristic, then conclude it is live body.

A kind of iris authentication system with In vivo detection function that this utility model embodiment provides, and in prior art In prior art, iris identification method based on pupil pantography is the most tracked and copys, so that recognition result reliability Relatively low, practicality is poor to be compared, and it degree of depth can combine the physiological property of eyes and iris is identified by physical characteristic, is difficult to Tracked and copy, safety preferably and can be identified in conjunction with multiple physiological feature and physical features, its recognition result Reliability is high so that practicality is preferable.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, permissible Realize by another way.Device embodiment described above is only schematically, such as, and the division of unit, only Dividing for a kind of logic function, actual can have other dividing mode when realizing, and the most such as, multiple unit or assembly can be tied Close or be desirably integrated into another system, or some features can be ignored, or not performing.Another point, shown or discussed Coupling each other or direct-coupling or communication connection can be the INDIRECT COUPLING by some communication interfaces, device or unit Or communication connection, can be electrical, machinery or other form.

The unit illustrated as separating component can be or may not be physically separate, shows as unit Parts can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple network On unit.Some or all of unit therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.

It addition, each functional unit in each embodiment of this utility model can be integrated in a processing unit, also Can be that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.

If function is using the form realization of SFU software functional unit and as independent production marketing or use, can store In a computer read/write memory medium.Based on such understanding, the technical solution of the utility model is the most in other words The part contributing prior art or the part of this technical scheme can embody with the form of software product, this meter Calculation machine software product is stored in a storage medium, including some instructions with so that a computer equipment (can be individual People's computer, server, or the network equipment etc.) perform each embodiment method of this utility model all or part of step. And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory), random access memory are deposited The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.

Above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model is not limited thereto, Any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change or replace Change, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claim Protection domain is as the criterion.

Claims

1. an iris authentication system with In vivo detection function, it is characterised in that including: light source module, light sensation module and Central controller；

Described light source module, for according to pre-conditioned surrounding's transmitting light to iris to be detected and/or described iris to be detected According to；Described one or more included in following condition pre-conditioned: the wave band of illumination, the spectrum of illumination, the intensity of illumination, light The distance between distance and light source module and light sensation module between the quantity of source module, multiple light source module；Described light source die Block includes one or more of following light source: full spectrum light source, broad spectrum light source and narrow spectroscopic light source；The light that light source module comprises Source number is at least one；Wherein, described light source module includes single source or multiple light source；

Described light sensation module matches with described light source module, for gathering the image of the iris to be detected after described illumination is irradiated Information, sends described image information to described central controller；Described image information includes the spy of described pre-conditioned correspondence Fixed characteristic information；Described light sensation module at least includes a photoelectric sensor；Described photoelectric sensor includes with in Types Below One or more: multiband light electric transducer and single band photoelectric sensor；

Described central controller electrically connects, on described iris authentication system with described light source module and described light sensation module respectively During electricity, control described light source module and the work of described light sensation module；And, receive the image information that described light sensation module sends, According to the standard information that the characteristic information in described image information is corresponding, described characteristic information is judged, believe in described feature When breath and described standard information match, it is determined that described iris to be detected is living body iris.

The most according to claim 1, there is the iris authentication system of In vivo detection function, it is characterised in that

The lighting system of described light source module includes one or more in the following manner: single source is with preset strength and sequential Lighting system, multiple spectrum light source or multiple light source illuminate simultaneously mode, multiple spectrum light source or multiple light source flash of light shine Bright mode, multiple spectrum light source or multiple light source with the lighting system of default sequential and multiple spectrum light source or multiple light source with Preset the lighting system of modulate intensity；

The image acquisition mode of described light sensation module includes one or more in the following manner: multiple single band photoelectric sensors The mode simultaneously gathered, the mode that multiple multiband light electric transducers gather simultaneously, multiple single band photoelectric sensors are to preset The mode of Timing acquisition, multiple multiband light electric transducers in the way of default Timing acquisition, a single band photoelectric sensor In the way of default Timing acquisition and a multiband light electric transducer are with default Timing acquisition.