CN203733133U - Mobile terminal iris recognition device with man-machine interaction mechanism - Google Patents
Mobile terminal iris recognition device with man-machine interaction mechanism Download PDFInfo
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- CN203733133U CN203733133U CN201420054998.9U CN201420054998U CN203733133U CN 203733133 U CN203733133 U CN 203733133U CN 201420054998 U CN201420054998 U CN 201420054998U CN 203733133 U CN203733133 U CN 203733133U
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Abstract
The utility model provides a mobile terminal iris recognition device with a man-machine interaction mechanism. The device comprises a man-machine interaction unit and a multi-spectral optical acquisition unit, wherein the man-machine interaction unit is used for realizing man-machine interaction between a user and the device in an iris image acquisition processing process, and includes a visual feedback screen which is located at the middle of a handheld device and has a multi-point touch control function, and the multi-spectral optical acquisition unit is use for acquiring the iris image of the user and includes an optical imaging module and a multi-spectral illumination module which surround the periphery of the visual feedback screen and are located at the front surface or the back surface of the device, wherein the optical imaging module comprises a lens seat as well as an image acquisition sensor, a double-filter switching device and a lens group which are sequentially embedded in the lens seat along a vertical direction.
Description
Technical field
The utility model relates to living things feature recognition and field of information security technology, relates in particular to a kind of hand held mobile terminals iris identification device with active vision, sense of touch and sense of hearing interaction mechanism.
Background technology
At present, identification has multiple means---fingerprint, palmmprint, face, iris.Iris is because its minutia is to be determined by the enchancement factor of embryonic development environment, and identical two irises can not appear in nature, and therefore, iris can be used for determining uniquely people's identity.Iris recognition technology adopts special optics image capture instrument to gather human eye iris image, then by digital image processing techniques, pattern-recognition and artificial intelligence technology, the iris image collecting is processed, stores, compared, realize certification and identification to personnel identity.Iris recognition has the advantages such as uniqueness is high, stability is strong, non-infringement, has successfully been applied to the identity authentication of the occasions such as airport, customs, bank.
But, iris is the internal of human body, physical size very little (diameter is generally in 1cm left and right), inside has been full of the trickle texture structures such as crisscross spot, striped, crypts, must just can collect high-quality iris image by the optical lens through particular design, active light source, control circuit etc.Traditional iris iris image imaging device and recognition system adopt long-focus (focal length is more than 3cm) camera lens more, equipment volume is large (thickness exceedes 2cm), be difficult to accomplish miniaturization, mobile, user can only carry out iris recognition and authentication in the fixed position that special iris authentication system has been installed, and can not enjoy anywhere or anytime safety and facility that iris recognition is brought.
In addition, be subject to the restriction of imaging system, Zoom control algorithm design complexity, traditional iris authentication system (as the publication number Chinese invention patent that the is CN101295357A) fixed-focus system that adopt more, user can only move forward and backward in the position of specifying, therefore, gather inconvenience, poor user experience.In addition, traditional iris capturing equipment (as the publication number Chinese invention patent that the is CN202196428) modes that adopt minute surfaces (as cold mirror) feedback guide user to adjust position more, this alignment so is easily subject to the impact of human eye astigmatism, cause user to see and aiming in mirror, but the in fact not yet problem such as aligning, often need repeatedly to adjust and just can reach suitable position, be unfavorable for user's use, waste time and energy.
At present, also there is no disclosed, actual exercisable, easy-to-use iris identification equipment both at home and abroad.Existing iris authentication system still has larger improved space at aspects such as miniaturization, mobile, ease for use, how to design the mobile terminal device of realizing user-friendly (particularly, have active vision, sense of touch and sense of hearing interaction mechanism) and can realizing iris recognition and remain a difficult problem urgently to be resolved hurrily.In order to address the above problem, the utility model has been designed and developed user-friendly handheld iris identification mobile terminal device of new generation.
Summary of the invention
The purpose of this utility model is to provide a kind of handheld iris identification mobile terminal device, described equipment comprises man-machine interaction unit, multispectral optically detecting unit, wherein said man-machine interaction unit is used for making user in iris image acquiring processing procedure, described iris recognition mobile terminal device be configured and realize human-computer interaction function with described equipment, and described man-machine interaction unit comprises the visual feedback screen that possesses multi-point touch function that is positioned at portable equipment centre position; Described multispectral optically detecting unit is for gathering user's iris image, comprise around described visual feedback screen periphery the positive of equipment or be arranged in equipment the back side optical imagery module and provide the multispectral illumination module of illumination for described optical imagery module, wherein said optical imagery module comprises microscope base, and is embedded in successively the image acquisition sensor on described microscope base, two optical-filter switcher and lens group with direction from bottom to top.
Preferably, described optical imagery module comprises single or multiple cameras.
Preferably, described optical imagery module comprises front-facing camera or post-positioned pick-up head, and described multispectral illumination module comprises preposition or rearmounted light source.
Preferably, described man-machine interaction unit also comprises the loudspeaker with voice output function and the microphone that are arranged in equipment periphery around visual feedback screen.
Preferably, described man-machine interaction unit also comprises the positioning indicator and the range finder module that are arranged in the state that is used to indicate of equipment periphery around visual feedback screen.
Preferably, described multispectral illumination module comprises the main light source of emission wavelength at the near infrared light of 750-850 nanometer.
Preferably, described multispectral illumination module comprises the secondary light source of launching visible ray.
Preferably, described optical imagery module comprises two cameras, the iris image that is gathered respectively user's eyes by two cameras carries out iris recognition authentication, or gathering respectively iris, fingerprint, face, palmmprint by two cameras carries out iris authentication imaging, or carries out user's coarse positioning by one of them camera.
Preferably, described optical imagery module comprises infrared light pass filter, visible ray pass filter and two optical-filter switcher, in gathering iris image, by two optical-filter switchers, infrared light pass filter is switched between lens group and image acquisition sensor, only allow near infrared light collected, and the in the situation that of daily shooting, by two optical-filter switchers, visible ray pass filter is switched between lens group and image acquisition sensor, only allow visible ray collected.
Can there is larger improvement compared with prior art at aspects such as the miniaturization of iris identification equipment, mobile, ease for use according to iris recognition mobile terminal device of the present utility model, and can realize user-friendlyly, there is the mobile terminal iris identifying function of active vision, sense of touch and sense of hearing interaction mechanism.
The description and the follow-up detailed description that should be appreciated that aforementioned cardinal principle are exemplary illustration and explanation, should the restriction to the claimed content of the utility model with do.
Brief description of the drawings
With reference to the accompanying drawing of enclosing, the more object of the utility model, function and advantage are illustrated the following description by the utility model embodiment, wherein:
Fig. 1 schematically shows according to the block diagram of system of the iris recognition mobile terminal device with active vision, sense of touch and sense of hearing interaction mechanism of the utility model embodiment;
Fig. 2 a-Fig. 2 b shows the handheld iris identification mobile terminal device according to the utility model one embodiment, and wherein, Fig. 2 a comprises single camera, and Fig. 2 b comprises two cameras;
Fig. 3 shows the composition frame chart of multispectral optically detecting unit;
Optional location layout mode while implementing in iris recognition mobile terminal device that Fig. 4-5 show multispectral illumination module.
Fig. 6 a and Fig. 6 b schematically show according to an embodiment of the invention side view structure and the front view structure for the imaging modules structure of iris capturing.
Hereinafter, embodiment of the present utility model will be described with reference to the drawings.In the accompanying drawings, identical Reference numeral represents same or similar parts, or same or similar step.
Embodiment
By reference to example embodiment, the purpose of this utility model and function and will be illustrated for the method that realizes these objects and function.But the utility model is not limited to following disclosed example embodiment; Can be realized it by multi-form.The essence of instructions is only to help various equivalent modifications Integrated Understanding detail of the present utility model.
The problem that is difficult to accomplish miniaturization and mobile in order to solve traditional iris image imaging device and recognition system according to authentication mobile terminal device of the present utility model, a kind of can be used for mobile terminal, user-friendly iris identification equipment of new generation have been proposed, particularly, a kind of iris recognition mobile terminal device with active vision, sense of touch and sense of hearing interaction mechanism is proposed.
system survey
Fig. 1 shows according to the block diagram of system of the iris recognition mobile terminal device 100 with active vision, sense of touch and sense of hearing interaction mechanism of the present utility model.This equipment 100 comprises man-machine interaction unit 110, multispectral optically detecting unit 120, iris image analysis and processing unit 130, feedback control unit 140 and power supply unit 150.
Particularly, described man-machine interaction unit 110 is for completing the multiple human-computer interaction functions such as vision, sense of touch and the sense of hearing of iris image acquiring processing procedure, so that user is configured and obtains the functions such as identifying information to equipment 100.Described multispectral optically detecting unit 120 is multispectral for realizing, the iris image acquiring of automatic focusing.Special iris image analysis and processing unit 130 is for the iris image collecting is carried out to analyzing and processing, and result or instruction (as focusing steering order, picture quality result etc.) are delivered to feedback control unit 140.The image analysis processing result feedback at the most spectroscopic optics collecting unit 120 of feedback control unit 140 for iris image analysis and processing unit 130 is obtained, and according to predefined rule, the imaging parameters of optically detecting unit 120 is carried out to intelligence adjusting; Meanwhile, feedback control unit 140 also for image analysis processing result feedback that image processing module 130 is obtained to man-machine interaction unit 110, and according to predefined rule output to user is used and instructs and feed back.Described power supply unit 150 for equipment is powered, for example, can be realized by chargeable battery.Under the equipment AC-less power electric power thus supplied at iris recognition mobile terminal device 100 places, this power supply unit is that equipment 100 is powered.In the time that equipment inserts AC power, can charge to this power supply unit.
Fig. 2 a shows the structural drawing of the handheld iris identification mobile terminal device of an embodiment of the present utility model.
This iris recognition mobile terminal device comprises man-machine interaction unit 110 and multispectral optically detecting unit 120.
Man-machine interaction unit 110 is for completing the multiple human-computer interaction functions such as visual interactive, haptic interaction and the sense of hearing of iris image acquiring processing procedure be mutual, thereby guides user is used iris authentication system, improves user-friendliness.
This man-machine interaction unit 110 comprises and is positioned at the visual feedback screen that possesses multi-point touch function 111 in portable equipment centre position, is positioned at the microphone that possesses voice collecting function 112 of portable equipment frame periphery, the loudspeaker 113 with voice output function, the positioning indicator 114 that is used to indicate state and range finder module 115 around visual feedback screen 111.The locus arrangement method of microphone, loudspeaker, positioning indicator, range finder module is according to actual conditions flexible configuration, can be on the camera lens limit of portable equipment, both sides, as long as be user-friendly to.
Particularly, this man-machine interaction unit 110 is mainly achieved as follows function:
A) active vision feedback: by visual feedback screen, the user's of Real-time Collection information is shown with video mode, thereby the video rapid adjustment that user can see according to oneself is to optimal acquisition position;
B) image processing and analyzing result shows: by visual feedback screen, the picture quality judged result that image processing algorithm analysis can be obtained (as clear, unintelligible, please away from) etc. information show in real time and utilize different colors or language to feed back to user, thereby the current acquisition state of perception that user can be real-time;
C) control parameter input: shield 111 by visual feedback, user can be configured the parameter of system, also can feed back with mutual acquisition process process.
For example, in the process of iris recognition, by touch-screen, user can specify the position that needs focusing by the mode of click feel region-of-interest.Image processing algorithm also can obtain by this area-of-interest of user's input a guestimate at iris center, realizes the function of iris image coarse positioning.Again for example, in the process of registration, the image that operating personnel (or user oneself) can obtain registration algorithm by touch-screen is selected, and accepts this image as clicked screen representation, streaks screen representation and abandons this image.Again for example, by touch-screen, can control system, for example can by touch-screen arrange device parameter, input oneself ID (identity number) card No. and password, equipment Output rusults is confirmed etc.Preferably, described visual feedback screen possesses multi-point touch function to realize better user's manipulation.
D) phonetic entry: by built-in microphone 112, initiatively man-machine interaction unit 110 can receive the voice command of user's input, and carry out corresponding operation.
E) audio feedback: by having the loudspeaker 113 of voice output function, system can feed back to user in the mode of voice by feedback command, image processing and analyzing result, identification authentication result etc., improves the degree of convenience of user's practicality.For example, the customer location information that image processing algorithm or range finder module analysis can be obtained (as " please away from a bit ", " please near a bit ", " please keep " etc.) feeds back to user, and with auditory tone cues, user adjusts position.
F) deixis: preferably, described active man-machine interaction unit 110 can also comprise the positioning indicator 114 of the state of being used to indicate, this positioning indicator 114 can be realized by the pilot lamp that can send particular color light, can show in the mode of pilot lamp image analysis processing result, identification authentication result etc. by pilot lamp.For example, green pilot lamp can represent that identification passes through, and red pilot lamp can represent recognition failures.
G) distance measurement function: described active man-machine interaction unit 110 can further be realized distance measurement function, for measuring in real time the distance of current user and optical imaging apparatus, thereby obtains best imaging effect.As shown in Figure 2 a, range finder module 115 is measured the distance d1 of user and iris recognition mobile terminal device 100 by transmitting infrared light or laser, then by calculating the iris radius of the iris image collecting, the distance by radius size estimated service life person with equipment.
Referring to Fig. 3, described multispectral optically detecting unit 120 is made up of optical imagery module 121 and multispectral illumination module 122.
Optical imagery module 121 is multispectral for realizing, the iris image acquiring of automatic focusing, by image acquisition sensor 211(for example CMOS, CCD), optical imaging lens 212, zoom motor 213 and multi-spectrum filter sheet 214 form.
This optical imagery module 121 can gather the iris image of user's right and left eyes simultaneously, comprises two kinds of implementations:
One is single camera pattern, uses the imaging modules of single high resolving power (being not less than 3,000,000 pixels, more than 5,000,000 pixels) to gather user's iris of both eyes image simultaneously;
Another kind is multi-cam pattern, comprises following several application mode:
A. two cameras, gather respectively the iris image function of user's right and left eyes.
B. dual camera auxiliary focusing function, as shown in Figure 2 b, main camera 121a is used for gathering iris image, secondary camera 121b is used for realizing user distance coarse positioning, can go out the distance of user to equipment according to the Information locating such as face, eyes, for main camera carries out optical zoom and point out user to adjust distance providing judgement information.Main camera 401 and secondary camera 121a and 121b all can adopt according to the camera shown in Fig. 1 of the present invention or Fig. 2, main camera 121a adopts the camera of resolution high (as 5,000,000-1,600 ten thousand pixels), and secondary camera 121b adopts the camera of resolution low (as 1,300,000-3,000,000 pixels).
C. iris authentication mobile device, can have multiple cameras to carry out respectively different identification authentication mode.For example, provide two cameras, main camera is taken for iris, and secondary camera is taken for face, the multimodal Biometrics mobile device of collection face and iris recognition.Under this implementation, main camera is the camera of high resolving power (as 5,000,000-1,600 ten thousand pixels), and for iris recognition, secondary camera is the camera of low resolution (as 1,300,000-3,000,000 pixels), for recognition of face.Or, a camera carries out face shooting, and for face authentication and iris authentication, another one camera can be for the identification of other biological feature, the shooting of for example fingerprint or palmmprint, chooses resolution ratio of camera head for the camera of fingerprint recognition according to decipherment distance.By setting supplementary illumination type, direction and mode, can ensure that camera shoots the fingerprint texture information of high-contrast.
Under multi-cam pattern, camera can be applied as preposition or post-positioned pick-up head separately.Accordingly, can near-infrared LED be set on camera side throws light on.This infrared LED is irradiation module, can fit together as an one-piece construction with imaging modules, also can be separated from each other.
Fig. 4-5 show respectively optical imagery module and are applied to optional location layout mode while enforcement in mobile terminal device, can be assemblied in before equipment, also can be assemblied in the equipment back side.In figure, empty circles (zero) has marked the location layout's mode while adopting single imaging modules, and solid circles (●) has marked the location layout's mode while adopting two imaging modules.
Preferably, the multi-spectrum filter sheet 214 that this optical imagery module 121 comprises is the optical filters that can make the light of light source included in multispectral illumination module 122 pass through, can be the optical filter composition that a slice comprises multiple spectrum, also can be formed by the optical filter of multi-disc single spectrum.
Preferably, this module has autozoom function, and the automatic focusing system that wherein zoom function can carry by image acquisition sensor completes, and also can be controlled and realize zoom function motor 213 by special iris image Focus value analytical approach.
Fig. 6 a and Fig. 6 b schematically show the imaging modules structure for iris capturing according to an embodiment of the invention.Fig. 6 a is the side view structure according to iris imaging module of the present invention, and Fig. 6 b is the front view structure that this iris imaging module obtains from lens group direction depression angle.
As shown in Figure 6 a, imaging modules 100 according to the present invention comprises microscope base 103, and is embedded in successively for example CMOS of image acquisition sensor 101(or the ccd sensor on described microscope base 103 with direction from bottom to top in Fig. 6 a), two optical-filter switcher 106 and lens group 102.
Two optical-filter switchers 106 are set above image acquisition sensor 101, two optical-filter switchers 106 are fixed on microscope base by gluing or other fixed form, thereby make the compact conformation of imaging modules, two optical-filter switchers 106 comprise two tablet filters, infrared light pass filter 108 and visible ray pass filter 107, therefore, can take with the near infrared being preferably within the scope of 800nm-900nm by compatible visible ray according to imaging modules 100 of the present invention.In gathering iris image, by two optical-filter switchers 106, infrared light pass filter 108 is switched between lens group 102 and image acquisition sensor 101, only allow near infrared light collected.And the in the situation that of daily shooting, by two optical-filter switchers 106, visible ray pass filter 107 is switched between lens group 102 and image acquisition sensor 101, only allow visible ray collected.
The switching of optical filter can adopt the mode that hand switches or non-manual (electronic) switches.For non-manual switching mode, switching power source (as motor) can be arranged on the inside of two optical-filter switchers 106.Under manual switchover mode, one mechanical type change-over switch can be set on two optical-filter switchers 106, be embedded on the shell of the integrated mobile device of described imaging modules, user can carry out free switching by stirring this mechanical type change-over switch between iris image acquiring and common shooting.
Lens group 102 is positioned at the top of microscope base 103, is surrounded by microscope base material.The type of imaging modules 100 of the present invention can be selected from and focus any one in camera module, two grades of zoom camera modules, automatic focusing camera module or optical zoom camera modules.If adopt and focus pattern according to imaging modules of the present invention, lens group 102 is fixed on microscope base 103, does not need to install the motor of the use of focusing.For the automatically imaging modules of focusing or optical zoom of needs, for example, when high-resolution camera, motor 105 need to be installed in imaging modules.Motor 105 is embedded in described microscope base 103, and lens group 102 is to be fixed in motor 105.Motor 105 can adopt the general mini-focal motor in this area, and for example step motor (Step motor), voice coil motor (VCM) or piezo-electric motor, preferably adopt voice coil motor.
In the imaging modules embodiment as shown in Fig. 6 a and 6b, image acquisition sensor 101 is positioned at microscope base 103 bottom, inserts in microscope base 103 bottoms in the mode of inlaying.Image acquisition sensor 101 is connected with connector 104, for transmitting by connector 104 iris image collecting by lens group 102 and image acquisition sensor 101, and receive the control signal sent through connector 104 from the central processing unit of mobile iris identification equipment, the signal of focusing as controlled lens group 102.In order to realize the miniaturization of imaging modules, to take flexible circuit form as the connector of Fig. 6 a and 6b and realize, flexible circuit end can adopt ZIF form or the connector of BTB plate to plate form, and Fig. 6 a and connector that 6b illustrates are BTB mode.Alternatively, also can, by there being multiple other connected modes, as hardboard pattern, directly be integrated in the bottom of image acquisition sensor 101 by connector, directly described imaging modules is welded in the mainboard of mobile device by direct insertion pin or surface-mount type.Imaging modules 100 communicates by the common interfaces such as FTB, BTB, SOCKET and mobile device.In addition,, in the imaging modules under zoom mode, the driving circuit of motor 105 is also linked on connector 104 and is communicated.Similarly, under the non-manual switch mode of two optical-filter switchers 106, the control signal of the switching power source of two optical filters is also transmitted by connector 104.
Imaging modules according to the present invention has microminiaturized structure, to can be integrated in mobile computing device, for example, is integrated into mobile phone, panel computer, notebook computer medium.The material of the lens group 102 using can for being selected from least one in resin lens and glass mirror, for example, can all adopt resin lens, or adopts the combination of resin lens and glass mirror.Resin lens adopts mold pressing, the moulding of aspheric surface technology, thereby makes the number of camera lens few, and volume is little, and equivalent focal length scope is at 2-15mm, thereby makes the thickness of imaging modules between 4-20mm.Be set to be embedded in microscope base 103 for realizing the motor 105 that zoom uses, the gauge of motor is generally 3-7mm.The filter plate thickness range of infrared light pass filter 108 and visible filter 107 is 0.1mm-5mm.Image acquisition sensor 101 adopts gluing mode and microscope base 103 to link together.Therefore make the imaging modules volume of this invention very little, be beneficial to and be integrated on mobile phone.
Multispectral illumination module 122 is arranged in a combination by the illuminating lamp of multiple different-wavebands, for sending the light of some strength, for example, can be that many near-infrared LEDs can irradiate iris from different perspectives, and exposure intensity is more even.
Preferably, multi-spectral illumination system comprises again main light source 1221 and secondary light source 1222.Main light source 1221 is indispensable illumination module, as shown in Figure 3, for example, adopts the near infrared illumination LED of wavelength coverage at 750-950nm, for gathering near infrared iris image; Secondary light source 1222 is optional illumination module, can be preferably other wavelength illuminating lamps such as blue light, green glow, gold-tinted, visible ray, for gathering multispectral iris image.The multispectral iris image gathering can detect for the live body of focusing position judgement and iris image.For example, multispectral illumination module 122 adopts the near-infrared LED of 750-850 nanometer and the green LED of wavelength 480-550 nanometer composition.
The locus arrangement method of illumination module 122 is according to actual conditions flexible configuration, can be evenly distributed on separately on the camera lens limit of portable equipment, both sides, also can be at the offside of camera lens.Optional location layout mode while implementing in mobile computing device that Fig. 4-5 show multispectral illumination module, in concrete enforcement, the layout of multispectral illumination module for example can be selected in figure any one or more the combination in the position of circle fork () mark, at the frame periphery of mobile computing device.
Especially, described iris image comparison can complete in described mobile terminal, also can complete at remote server end, described remote server end comprises the data processing server at individual data center, can be to be also similar to the virtual server that is stored in high in the clouds.When in the time that the machine is compared, registration feature should be stored in the interior or prior storage unit that is downloaded to the machine by network of storage unit of the machine in advance.When in the time that remote server end is compared, the iris image collecting completes iris image quality analysis, iris preprocessing, live body monitoring and feature coding process in the machine, only the condition code being drawn into is transferred to remote server, complete after comparison at server end, recognition result or follow-up result are transferred to the machine.
Especially, for the security of guarantee information disposal system, carrying out under remote mode, described feature masterplate also needs to check hardware identity (ID) information of described mobile terminal device.
Especially, image recognition processes is supported Real time identification pattern and non real-time recognition mode.Under Real time identification pattern, system is processed, encodes and compare every piece image, obtains recognition result.Under non real-time pattern, first system gathers the iris image within the scope of certain hour, then therefrom selects 1-3 up-to-standard image, and identifies comparison.
user uses the process of the utility model equipment
Taking iris recognition as example, illustrate that the process that user uses iris recognition mobile terminal device 100 described in the utility model to carry out authentication is as follows:
A) the iris capturing disposal system software that user starts mobile terminal by click brings into operation;
B), under the condition of radiation of visible light, system points out user to watch iris optical imagery module 121 attentively by speech synthesizer 113 and multi-point touch panel 111;
C) now, optical imagery module 121 is started working, and collect a width user iris image by steps such as autozooms, in this process, point out user suitable adjusting position by speech synthesizer 113 and multi-point touch panel 111, make iris optical imaging apparatus can collect the image of eyes or at least one eyes;
D) user clicks or selects to need by voice mode the area-of-interest of focusing;
E) system obtains the distance range of current user and equipment by range finder module;
F) obtain after area-of-interest position and distance range, device start near infrared illuminator, and start to gather the near infrared iris image of one group of different focal position.Herein, different focal positions are by the Configuration to iris optical imagery module;
G) image acquisition and processing module is carried out Treatment Analysis to the image sequence collecting, and calculates the massfraction of every width interesting image regions, and obtains best focal position based on massfraction;
H) optical imagery module is configured to this best focus position, shows the mark (as green check mark) that image is aimed at simultaneously on visual feedback screen.The mark that described image is aimed at also can be realized by other indicating equipments on mobile terminal, if send the pilot lamp of particular color light;
I) optical imagery module gathers several near infrared iris images near this focal position;
J) image analysis processing unit walks based on h the image collecting and processes, and obtains the three width images that massfraction is the highest, and it is carried out to feature extraction and coding;
K) described three feature codings of width optimized image and the condition code of registration in advance compared, and obtains identity authentication result.
L) comparison result processing.If compared unsuccessfully, refuse user's this time ID authentication request, and in application-specific, start panalarm; If compared successfully, by user's this time ID authentication request, and allow it to carry out subsequent operation.
Especially, the click described in above-mentioned steps can be that finger mouse is clicked, and also can refer to finger or writing pencil touching.Especially, in the time that optical capturing equipment collects binocular images, described area-of-interest refers to iris and the pupil region of eyes; In the time that only optical capturing equipment only collects eyes, described area-of-interest refers to iris and the pupil position of current collected eyes.
application Example
The above; it is only the embodiment in the utility model; but protection domain of the present utility model is not limited to this; any people who is familiar with this technology is in the disclosed technical scope of the utility model; can understand conversion or the replacement expected; all should be encompassed in of the present utility model comprise scope within, therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
In conjunction with the explanation of the present utility model and the practice that disclose here, other embodiment of the present utility model are apparent for those skilled in the art.Illustrate with embodiment and be only considered to exemplary, true scope of the present utility model and purport limit by claim.
Claims (8)
1. have a mobile terminal iris identification device for man-machine interaction mechanism, described device comprises man-machine interaction unit, multispectral optically detecting unit, wherein
Described man-machine interaction unit is used for making user to carry out man-machine interactive operation at iris image acquiring processing procedure and described device, and described man-machine interaction unit comprises the visual feedback screen that possesses multi-point touch function that is positioned at handheld apparatus centre position;
Described multispectral optically detecting unit is for gathering user's iris image, comprise around described visual feedback screen periphery the positive of device or be arranged in device the back side optical imagery module and provide the multispectral illumination module of illumination for described optical imagery module
Wherein said optical imagery module comprises microscope base, and is embedded in successively the image acquisition sensor on described microscope base, two optical-filter switcher and lens group with direction from bottom to top,
In gathering iris image, by two optical-filter switchers, infrared light pass filter is switched between lens group and image acquisition sensor, only allow near infrared light collected, and the in the situation that of daily shooting, by two optical-filter switchers, visible ray pass filter is switched between lens group and image acquisition sensor, only allow visible ray collected.
2. device as claimed in claim 1, wherein said optical imagery module comprises single or multiple cameras.
3. device as claimed in claim 1 or 2, wherein said optical imagery module comprises front-facing camera or post-positioned pick-up head, described multispectral illumination module comprises preposition or rearmounted light source.
4. device as claimed in claim 1, wherein said man-machine interaction unit also comprises the loudspeaker with voice output function and the microphone that are arranged in device periphery around visual feedback screen.
5. device as claimed in claim 1, wherein said man-machine interaction unit also comprises the positioning indicator and the range cells that are arranged in the state that is used to indicate of device periphery around visual feedback screen.
6. device as claimed in claim 1, wherein said multispectral illumination module comprises the main light source of emission wavelength at the near infrared light of 750-850 nanometer.
7. device as claimed in claim 1, wherein said multispectral illumination module comprises the secondary light source of launching visible ray.
8. device as claimed in claim 2, wherein said optical imagery module comprises two cameras, the iris image that is gathered respectively user's eyes by two cameras carries out iris recognition authentication, or gathering respectively iris, fingerprint, face, palmmprint by two cameras carries out iris authentication imaging, or carries out user's coarse positioning by one of them camera.
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