CN103839054B - Multi-functional mobile intelligent terminal sensor supporting iris recognition - Google Patents
Multi-functional mobile intelligent terminal sensor supporting iris recognition Download PDFInfo
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Abstract
The invention provides a multi-functional mobile intelligent terminal sensor supporting iris recognition. The three work modes of iris recognition, a distance sensor and a luminance sensor are supported. The sensor comprises a man-machine interaction module, an image collecting module, an image analysis and processing module, a feedback control module and a function selecting module. The functions of image induction, distance induction and luminance induction are achieved through the same image collecting module, hardware equipment does not need to be additionally mounted, use of space resources of a cell phone front panel is reduced, hardware cost and the manufacturing procedure are saved, and the appearance of a mobile terminal is made to be simple and attractive through integrated design of all the sensors.
Description
Technical field
The present invention relates to iris recognition field, particularly a kind of Multifunctional mobile intelligent terminal for supporting iris recognition is sensed
Device.
Background technology
In order to realize more powerful more fully function, on the mobile intelligent terminals such as mobile phone, flat board, it will usually integrated to be used for
Realize the sensor of various functions.For example, experience the change of mobile phone center of gravity when altering one's posture, so as to realize that for example mobile phone is anyhow
The gravity sensor of screens switch function；Acceleration can be measured and realize that whipping cuts the acceleration transducer of song；For by prison
The environment illumination intensity residing for terminal is surveyed to automatically adjust the luminance sensor of screen intensity；For monitoring terminal apart from human body
Distance, and make corresponding control process, if distance of reaction is near face when in call screen is automatically turned off to avoid maloperation
Range sensor etc..
Meanwhile, with the development of development of Mobile Internet technology, information security and Verify Your Identity questions on mobile intelligent terminal
Become increasingly conspicuous, increasing intelligent terminal is integrated with the bio-identification for recognizing such as fingerprint, face, iris biological information
The sensor of technology.Have the advantages that uniqueness is high, stability is strong due to iris recognition, the non-property invaded, antifalsification it is good so as to suitable
In information of mobile terminal safety and authentication, therefore the integrated rainbow on the mobile intelligent terminals such as increasing mobile phone, flat board
Film identification sensor be trend institute to.
However, simultaneously using such as these independent sensors of range sensor, luminance sensor and iris recognition sensor,
Not only need to increase various independent components, can also tie up the nervous free space of Mobile telephone front panel.For example, brightness is sensed
Device is needed to use and for optical signal to become electric signal so as to estimate the component such as phototriode of extraneous intensity of illumination；Distance-sensing
The signals such as device transmitting electricity, magnetic, sound, receive the physical signalling of correspondence feedback, and measurement distance is realized according to gauge signal change
Purpose, it is therefore desirable to for transmission signal component and the component of reception signal.
Therefore, mobile phone space availability ratio how is improved, hardware cost is saved, into problem demanding prompt solution.
The content of the invention
The present invention provides a kind of Multifunctional mobile intelligent terminal sensor for supporting iris recognition, support iris recognition, away from
From sensor, luminance sensor these three mode of operations, the sensor includes:Single image acquisition module, function selection mould
Block, image analysis processing module and feedback control module, wherein described image acquisition module are by optical imagery module and infrared
Light source is constituted, for the figure of the acquisition testing object under iris recognition, range sensor, luminance sensor these three mode of operations
As and pass to image analysis processing module and carry out iris image identification, distance and brightness impression, and in iris recognition work
In pattern and range sensor mode of operation, there is provided infrared light supply；The function selecting module is used to receive user to work
The selection of operation mode, and it is supplied to feedback control module；The feedback control module according to different mode of operations, with reference to described
Image capture module, function selecting module, image analysis processing module carry out feedback control treatment；Described image analyzes and processes mould
Block is used to be analyzed treatment to the iris image for collecting, and result is delivered into the feedback control module.
Preferably, when selection enters iris recognition mode of operation, function selecting module notifies that feedback control module enters
Iris recognition mode of operation；Feedback control module control image capture module opens infrared light supply to provide infrared light supply；Feedback
Control module control image capture module gathers human eye iris image under infrared illumination；Image analysis processing module is to iris figure
As being analyzed, the collection distance and picture quality of active user are judged；In prompting user's adjustment position to predetermined collection
Distance range and obtain meet the image of image quality requirements after, carry out iris recognition.
Preferably, when in talking state, into range sensor mode of operation, function selecting module notifies feedback control
Molding block enters range sensor mode of operation；It is red to provide that feedback control module control image capture module opens infrared light supply
Outer light source simultaneously gathers infrared image；Image analysis processing module carries out Treatment Analysis to infrared image, draws brightness of image and sentences
Whether disconnected brightness of image is more than threshold value；In the case where brightness of image is more than threshold value, image analysis processing module is to feedback control
Module sends judged result, and feedback control module is closed the screen of intelligent terminal and locks the screen of intelligent terminal and is allowed to keep
Closed mode, to avoid the maloperation to intelligent terminal；In the case where brightness of image is less than threshold value, then lock screen or holding are solved
Intelligent terminal screen is in the use state opened；The time to be specified such as feedback control module, infrared image is then resurveyed,
To realize lasting Distance-sensing function, until end of conversation.
Preferably, when selection enters luminance sensor mode of operation, then function selecting module notifies feedback control module
Into luminance sensor mode of operation, figure is gathered under ambient lighting conditions by feedback control module control image capture module
Picture；Image analysis processing module carries out Treatment Analysis to image, draws brightness of image, then that the analysis result of brightness of image is defeated
Go out to feedback control module；Screen of the feedback control module according to corresponding to the brightness of image grade that image analysis processing module is exported
Curtain brightness value adjusts the screen intensity of screen.
The present invention also provides a kind of mobile intelligent terminal with sensor as described above.
The present invention also provides a kind of IMAQ and processing method for mobile intelligent terminal, and methods described can be used
Single image acquisition module realizes iris recognition, range sensor, three kinds of mode of operations of luminance sensor, and methods described includes step
Suddenly：Under iris recognition mode of operation, there is provided infrared light supply, human eye iris image is gathered by single image acquisition module and is passed
Passing image analysis processing module carries out iris image identification；Under range sensor mode of operation, there is provided infrared light supply, pass through
Single image acquisition module gathers infrared image and passes to image analysis processing module carries out Distance Judgment；In luminance sensor
Under mode of operation, single image acquisition module is passed through under ambient lighting conditions and is gathered image and is passed to image analysis processing mould
Block carries out brightness judgement.
Preferably, the step under iris recognition mode of operation also includes：Iris image is analyzed, current using is judged
The collection distance and picture quality at family；In prompting user's adjustment position to predetermined collection distance range and obtain and meet image
After the image of quality requirement, iris recognition is carried out.
Preferably, the step under range sensor mode of operation also includes：When in talking state, passed into distance
Sense device working pattern, opens infrared light supply to provide infrared light supply and gather infrared image；Treatment Analysis are carried out to infrared image,
Draw brightness of image and judge brightness of image whether more than threshold value；In the case where brightness of image is more than threshold value, intelligence is closed eventually
The screen at end and lock the screen of intelligent terminal and be allowed to remain off, to avoid the maloperation to intelligent terminal；In figure
Image brightness is less than the use state before in the case of threshold value, then solving lock screen or keeping intelligent terminal screen to be in；Wait refers to
Fix time, then resurvey infrared image, to realize lasting Distance-sensing function, until end of conversation.
Preferably, the step under luminance sensor mode of operation also includes：Treatment Analysis are carried out to image, image is drawn
Brightness, then the screen brightness value according to corresponding to brightness degree adjust the screen intensity of screen.
Brief description of the drawings
With reference to the accompanying drawing enclosed, the present invention more purpose, function and advantages are by by the as follows of embodiment of the present invention
Description is illustrated, wherein：
The system that Fig. 1 a diagrammatically illustrate the Multifunctional mobile intelligent terminal sensor of support iris recognition of the invention
Block diagram.
Fig. 1 b diagrammatically illustrate the composition frame chart of image capture module of the invention.
Fig. 2 diagrammatically illustrates the Multifunctional mobile intelligent terminal sensor selection using support iris recognition of the invention
The flow chart of mode of operation.
Fig. 3 a diagrammatically illustrate the method flow diagram of iris recognition mode of operation.
Fig. 3 b are schematically illustrated under iris recognition mode of operation the method that brightness of image is calculated when carrying out graphical analysis
Flow chart.
Fig. 4 diagrammatically illustrates the method flow diagram of range sensor mode of operation.
Fig. 5 diagrammatically illustrates the method flow diagram of luminance sensor mode of operation.
Specific embodiment
By reference to one exemplary embodiment, the purpose of the present invention and function and the side for realizing these purposes and function
Method will be illustrated.However, the present invention is not limited to one exemplary embodiment as disclosed below；Can by multi-form come
It is realized.The essence of specification is only to aid in various equivalent modifications Integrated Understanding detail of the invention.
Hereinafter, embodiments of the invention will be described with reference to the drawings.In the accompanying drawings, identical reference represents identical
Or similar part, or same or like step.
The present invention provides a kind of Multifunctional mobile intelligent terminal sensor for supporting iris recognition, it would be preferable to support iris knowledge
Not, these three mode of operations of range sensor, luminance sensor.
The system that Fig. 1 a diagrammatically illustrate the Multifunctional mobile intelligent terminal sensor of support iris recognition of the invention
Block diagram.
As shown in Figure 1a, Multifunctional mobile intelligent terminal sensor 100 of the invention includes human-computer interaction module 110, figure
As acquisition module 120, image analysis processing module 130, feedback control module 140, and function selecting module 150.Man-machine friendship
Mutual module 110 is served only in iris recognition mode of operation, make user in iris image acquiring processing procedure with the movement
Terminal carries out human-computer interaction function.Image capture module 120 be used for iris recognition, range sensor, luminance sensor this three
Image is gathered under kind mode of operation and described image analysis and processing module 130 is passed to and is processed, and in iris recognition work
In operation mode and range sensor mode of operation, infrared light supply can be provided.Image analysis processing module 130 is used to be adopted to described
The iris image for collecting is analyzed treatment, and result is delivered into the feedback control module 140.Feedback control module
140 can enter according to different mode of operations with reference to described image acquisition module, function selecting module, image analysis processing module
The treatment of row feedback control.Function selecting module 150 is used to receive selection of the user to mode of operation, and is supplied to feedback control
Module 140.
Primary processor that image analysis processing module 130 and feedback control module 140 can be carried using smart mobile phone and
Controller is constituted.
Modules are described in detail below one,.
1. human-computer interaction module 110
Human-computer interaction module 110 can complete visual interactive during image acquisition and processing, haptic interaction and the sense of hearing and hand over
Various human-computer interaction functions such as mutual, so as to instruct user to use iris authentication system, improve user-friendliness.Human-computer interaction module
110 can include display screen, possess voice collecting function microphone, the loudspeaker with voice output function, for indicating
The positioning indicator and input/output interface of state.Specifically, human-computer interaction module 110 is mainly implemented function such as：
A) active vision feedback：By display screen, the information of the user of Real-time Collection is shown with video mode
Come, so that the video that user can see according to oneself is quickly adjusted to optimal acquisition position；B) image processing and analyzing result
Display：By display screen, the picture quality judged result that image processing algorithm analysis can be obtained (it is such as clear, unintelligible, please
Away from) etc. information in real time display and using different color or verbal feedback to user so that user can perceive in real time
Current acquisition state；C) phonetic entry：By built-in microphone, active human-computer interaction module 110 can receive user
The voice command of input, and perform corresponding operation.D) audio feedback：By the loudspeaker with voice output function, system
Feedback command, image processing and analyzing result, identification authentication result etc. can be fed back to user in the way of voice, improve and use
The practical degree of convenience in family.For example, the customer location prompt message that can be obtained image processing algorithm or range finder module analysis is (such as
" please away from a bit ", " please be near a bit ", " please keep " etc.) user is fed back to, with auditory tone cues user's adjustment position.E) indicate
Function：The active human-computer interaction module 110 can also preferably comprising the positioning indicator for instruction state, and the state refers to
Show that device can be realized by that can send the indicator lamp of particular color light, can be to image analysis processing knot by indicator lamp
Really, identification authentication result etc. is shown in the way of indicator lamp.For example, the indicator lamp of green can be represented be identified by, and
Red indicator lamp can represent recognition failures.
2. image capture module 120
Image capture module 120 is used to gather image and pass to follow-up image analysis processing module 130 to be processed,
And in iris recognition mode of operation and range sensor mode of operation, infrared light supply can be provided.Image capture module 120
The image of different resolution can be gathered.For example during high-resolution iris image acquiring, resolution ratio is preferably not less than 640*480,
It is not less than the image resolution ratio of 300K.Low resolution is, for example, the image resolution ratio of 100*100.It is main when infrared light supply is provided
The luminous power of dynamic light source for example ensures in 1mw/cm2And 10mw/cm2Between.Medium illumination condition is for example in 5mw/cm2Left and right.
Fig. 1 b further illustrate the composition frame chart of image capture module 120.As shown in Figure 1 b, described image acquisition module
120 are made up of optical imagery module 121 and infrared light supply 122.
Optical imagery module 121 includes special image acquiring sensor 211, special collection optical lens 212 and filter
Mating plate 214.The module is placed on the front end of mobile device as front camera, during so as to user front handheld terminal
Collection image.In optical imagery module 121, optical lens 212 is directed to the special lens group that iris recognition is specially designed,
Brightness impression can be simultaneously used for and distance perspective should.The parameter area of camera lens is preferably：Equivalent focal length is 2.5mm~5mm；Aperture model
Enclose is 2.0~2.8；Lens mount specification is Φ 4mm~Φ 8mm；Optics overall length is 3mm~6mm.Final whole camera module
Size is minimum 6 × 6mm square, is 8.5 × 8.5mm square to the maximum, and thickness is 4mm~10mm.Imageing sensor 211 is preferably
Cmos sensor.Cmos sensor 112 is preferred to support more than 2,000,000 resolution ratio, and supports various resolution acquisition patterns.
Cmos sensor 112 can be RGGB sensors, or RGB-IR sensors etc..Optical filter 214, preferably visible ray and
Near-infrared Double pass filter, can simultaneously pass through visible ray and near infrared light.Preferably, optical imagery module 121 can include becoming
Burnt motor 213, realizes the iris image acquiring of auto-focusing.
Infrared light supply 122, for realizing the offer active infrared illumination of the functions such as iris imaging, Distance-sensing.This is infrared
Light source for example with wave-length coverage 750-950nm near-infrared illumination LED, the iris image for gathering near-infrared.Illumination
Intensity can be divided into not at the same level, be beneficial to the according to circumstances amount of saving energy, for example, illumination intensity is divided into 1-5 grades, and series is bigger,
Illumination intensity is bigger.The locus of infrared light supply 122, can be individual on camera lens side, both sides according to actual conditions flexible configuration
But number also one or more.
When general mobile phone shoots, if flash lamp is opened, human eye cannot be looked at straight, have obvious sense of discomfort.Compare, there is provided
During infrared light supply, user does not have obvious sense of discomfort；Additionally, under visible light, the image of collection can be with ambient lighting
Change, brightness can occur significantly to change, it is difficult to be used to carry out Distance Judgment.Comparatively speaking, in iris recognition Working mould
In formula and range sensor mode of operation, there is provided infrared light supply, the change of ambient lighting can be largely adapted to, especially
In the case of the ambient lightings such as night deficiency, it is also possible to normally used.
3. image analysis processing module 130
Image analysis processing module 130 is used to be analyzed the iris image for collecting treatment, and treatment is tied
Fruit is delivered to the feedback control module 140.Specifically, image analysis processing module 130 can be by special iris image
Reason module, image processor and memory composition.Image analysis processing module 130 be used for the iris image for collecting or other
Image (image collected in range sensor mode of operation and under luminance sensor mode of operation) is analyzed treatment,
Such as brightness of image analysis, the analysis of iris radius size, collection distance analysis, picture quality, auto-focusing calculating, feature extraction
With than reciprocity function.Image processor and memory can carry out iris image analysis treatment.Both can be with image processing process
Directly use existing computing unit (such as notebook in mobile platform (including smart mobile phone, notebook computer, panel computer)
Arm processor in the Intel processor or smart mobile phone of computer) realize the function of graphics processing unit, it is also possible to separately
Special graphic process unit (such as ARM, DSP etc.) is configured to carry out above-mentioned image procossing.
4. feedback control module 140
When the instruction of function selecting module 150 is received, feedback control module 140 can combine other modules to the instruction institute
The function of specifying is processed.
5. function selecting module 150
Function selecting module 150 is used to receive selection of the user to mode of operation, and is supplied to feedback control module
140。
Two, mode of operations
Fig. 2 diagrammatically illustrates the flow chart that mode of operation is selected using function selecting module 150.Biography of the invention
Sensor, mode of operation can be divided into three kinds：Iris recognition, range sensor, luminance sensor.
Below in conjunction with the accompanying drawings, the Multifunctional mobile intelligent terminal sensor of support iris recognition of the invention is illustrated
Three kinds of idiographic flows of mode of operation.
(1) iris recognition mode of operation
Iris data collection is carried out using Multifunctional mobile intelligent terminal sensor of the invention.In image acquisition process
In carry out distance prompt, carry out man-machine interaction, it is ensured that the brightness of collection image and avoid the illumination from influenceing very much eye-safe by force, facilitate
Collect up-to-standard iris image.By graphical analysis, quality judging and comparison, the mesh of authenticating user identification is realized
, it is ensured that the information security of intelligent terminal user.
Fig. 3 a diagrammatically illustrate the method flow diagram of iris recognition mode of operation, as detailed below.
A. step 310, when mobile terminal starts iris identifying function, function selecting module 150 notifies feedback control mould
Block 140 enters iris recognition mode of operation, and the control image capture module 120 of feedback control module 140 opens infrared light supply to carry
For infrared light supply, and illumination condition is set to medium illumination condition, if illumination intensity for example is divided into 1-5 grades, can will be red
The illumination condition of outer light source is set to 3 grades.Luminous power on active light source, more specifically, the luminous power of active light source is for example
Ensure in 1mw/cm2And 10mw/cm2Between.Medium illumination condition is for example in 5mw/cm2Left and right.
B. step 320, the control image capture module 120 of feedback control module 140 gathers iris image under infrared illumination.
Preferably, high-definition picture is gathered.When high-resolution iris image is gathered, resolution ratio is preferably not less than 640*480, i.e., not
Image resolution ratio less than 300K.
C. step 330, image analysis processing module 130 is analyzed to iris image, obtains the characteristic value of image, then
The collection distance of active user is judged according to this feature value, finally analysis result is exported to feedback control module 140.Wherein,
Characteristic value can be size of image brightness values, iris radius etc..
Fig. 3 b diagrammatically illustrate the method flow diagram for calculating brightness of image, as detailed below.
√ steps 3301, judge whether image is one single channel image of human eye iris image of collection, if so, then entering
Step 3302；Otherwise enter step 3306；
√ steps 3302, start near-infrared image analysis；
√ steps 3303, iris region is determined using iris rough localization method；
√ steps 3304, calculate the average gray value of iris region；
√ steps 3305, export brightness value, and now this flow terminates；
√ steps 3306, start visible images analysis；
√ steps 3307, calculate the average gray under the chrominance channels of RGB tri-, subsequently into step 3305.
Here, it is corresponding relation between the characteristic value of iris image and collection distance.For example, being rainbow in the characteristic value chosen
In the case of the brightness value of film image, if brightness exceeds threshold range, then it represents that collection distance is beyond threshold range.
D. whether step 340, image analysis processing module 130 judges collection distance in threshold range, if so, then entering
Step 360；Otherwise enter step 350；
E. step 350, image analysis processing module 130 will gather judged result of the distance not in threshold range export to
Feedback control module 140, points out user to make position adjustment, then by after the scheduled wait time, return to step 320.
If specifically, collection distance is higher than threshold range, that is, gathering apart from excessive, then feedback control module 140 passes through people
Machine interactive module 110 points out user closer to sensor；If collection distance is less than threshold range, that is, gather apart from too small, feedback
Control module 140 control image capture module 120 close infrared illumination, and by human-computer interaction module 110 point out user away from
Infrared illumination.
Because the acquisition range of iris is certain, i.e., iris knowledge can be just carried out in the range of certain distance before camera lens
Not, so pointing out user the purpose that can realize being carried out in suitable collection distance iris recognition by man-machine interaction.In addition, this
The illumination of extraneous active infrared that the iris recognition of invention is used is usually constant illumination, thus when user and collecting device with
And in the case that the distance of active illumination is too near, just has and be good at causing the illumination at human eye too strong, have an impact eye-safe
Risk, so gathering hypotelorism here, then closes infrared illumination, and point out user away from sensor.
Here, after infrared illumination is closed, if equipment is still within iris recognition state, after waiting for a period of time,
Infrared illumination is opened, proceeds iris recognition.
F. step 360, image analysis processing module 130 judges whether picture quality is qualified, is then to enter step 380, no
Then enter step 370.Here, judging the key element of picture quality includes：Block fraction, iris-sclera boundary contrast, iris-
Pupil boundary contrast, definition, motion blur, available gray scale number, iris radius, pupil-iris concentric circles regularity etc..
G. step 370, if picture quality is judged as unqualified, image analysis processing module 130 is defeated by analysis result
Go out to feedback control module 140, feedback control module 140 notifies that user wanted with unqualified by human-computer interaction module 110
The corresponding adjustment of element, then returns again to step 320 and resurveys iris image.The adjustment is, for example, to block fraction key element not
In the case of qualified, the hair or other articles of eye are blocked in arrangement.
H. step 380, image analysis processing module 130 carries out iris image than reciprocity image procossing.For example include as follows
Step：Iris information (or feature) is extracted from up-to-standard iris image；The iris information that will be extracted in intelligent terminal or
The iris information in iris database in person's Cloud Server is compared；In above-mentioned iris database finds with collected
Iris image the close iris information of image information, so as to reach iris recognition, carry out the mesh such as authentication to user
's.
I. after iris recognition terminates, iris recognition mode of operation is exited.
(2) range sensor mode of operation
During user takes phone, start the Distance-sensing mode of operation anti-misoperation of Multifunction Sensor, i.e.,
When the distance of user face and mobile intelligent terminal is less than certain limit, screen and screen locking are closed, prevent maloperation.When user's face
Portion is more than certain limit with the distance of mobile intelligent terminal, opens screen and solves lock screen.
Fig. 4 diagrammatically illustrates the method flow of the range sensor mode of operation according to the specific embodiment of the invention
Figure, as detailed below.
Step 410, when in talking state, function selecting module 150 notifies that feedback control module 140 enters distance and passes
Sense device working pattern, the control image capture module 120 of feedback control module 140 opens infrared light supply to provide infrared light supply, and
Illumination condition is set to low illumination condition, if illumination intensity for example is divided into 1-5 grades, can be by the illumination shape of infrared light supply
State is set to 1 grade.
Step 420, the control image capture module 120 of feedback control module 140 gathers infrared image under infrared illumination.It is excellent
Selection of land, gathers low-resolution image.Low resolution can be the image resolution ratio of such as 100*100.
Step 430, image analysis processing module 130 carries out Treatment Analysis to image, draws brightness of image.
Whether step 440, image analysis processing module 130 judges brightness of image more than threshold value, if so, then entering step
450；Otherwise enter step 460.
Step 450, due to there is provided infrared illumination, so in the case where brightness of image is more than threshold value, illustrating now to shield
Curtain is close with the distance of face, then image analysis processing module 130 sends judged result, feedback control to feedback control module 140
Molding block 140 is closed the screen of intelligent terminal and locks the screen of intelligent terminal and is allowed to remain off, to avoid to intelligence
The maloperation of energy terminal.Then, into step 470.
Step 460, in the case where brightness of image is less than threshold value, illustrates that now screen is far with the distance of face, then solve
Lock screen or keep intelligent terminal screen be in before use state.Then, into step 470.
Time (the t to be specified such as step 470, feedback control module 140>=1 second), it is then back to step 420 and resurveys
Infrared image, to realize lasting Distance-sensing function, until end of conversation.
After end of conversation, range sensor mode of operation is exited.
(3) luminance sensor mode of operation
By Real-time Collection ambient image, graphical analysis is carried out, judge ambient lighting grade, active accommodation screen intensity,
Ensure the comfort level of human eye.
Fig. 5 diagrammatically illustrates the method flow diagram of luminance sensor mode of operation, as detailed below.
Step 510, if into luminance sensor mode of operation, function selecting module 150 notifies feedback control module 140
Into luminance sensor mode of operation, image capture module 120 is controlled to be adopted under ambient lighting conditions by feedback control module 140
Collection image.Preferably, low-resolution image is gathered.Acquisition time interval can be with sets itself.
Step 520, image analysis processing module 130 carries out Treatment Analysis to image, draws brightness of image, then by image
The analysis result of brightness is exported to feedback control module 140.Preferably, the brightness of image grade of brightness of image can be analyzed, so
Only brightness of image grade is exported to feedback control module 140 afterwards.Here, corresponding one of each brightness of image grade is best suitable for
The screen intensity of current environment brightness.
Step 530, feedback control module 140 receives the brightness of image of the output of image analysis processing module 130, according to brightness
Screen brightness value corresponding to grade adjusts the screen intensity of screen.
The times to be specified such as step 540, feedback control module 140, it is then back to step 510 again under visible light illumination
Collection image, to realize lasting brightness sensing function.Wherein, time t is specified>=1 second.
Mode into luminance sensor mode of operation has at least two：
A. it is intended for single use pattern：User can for example manually select mobile phone by way of the button for clicking on luminance sensor
Into luminance sensor mode of operation, can now enter luminance sensor mode of operation, Multifunctional mobile of the invention
Intelligent terminal sensor single detects ambient brightness and adjusts screen luminance of mobile phone according to ambient brightness testing result.
B. auto-set mode：Function selecting module 150 is automatic to be chosen to be brightness sensing mode of operation by mode of operation, then
In not only not actuated iris identifying function but also when being not in talking state, Multifunctional mobile intelligent terminal sensor of the invention
Constantly detect ambient brightness and screen luminance of mobile phone is adjusted according to ambient brightness testing result, if iris identifying function is started
Into iris recognition mode of operation, if in call, in range sensor mode of operation.
The working method that above-mentioned brightness, distance perspective are answered is exemplary, and concrete application mode can be according to actual conditions
It is varied from, such as distance perspective should can be also used for the distance of sensing movement terminal and other objects, as long as measurement range is in inspection
In the range of survey, or luminance sensor can not only detect ambient brightness, can also detect brightness of particular space etc.
Deng the change of these application modes is all within the scope of the present invention.
It will be understood by those skilled in the art that the present invention realize by same image capture module be used as image, away from
From the function with brightness impression, without still further increasing hardware device, the use of Mobile telephone front panel space resources is reduced, saved
Hardware cost and manufacturing process, and the Integrated design of each sensor causes that the tailored appearance of mobile terminal is good-looking.
With reference to the explanation of the invention and practice that disclose here, other embodiment of the invention is for those skilled in the art
All will be readily apparent and understand.Illustrate and embodiment is to be considered only as exemplary, true scope of the invention and purport are equal
It is defined in the claims.
Claims (9)
1. a kind of Multifunctional mobile intelligent terminal sensor, supports iris recognition, range sensor, luminance sensor these three works
Operation mode, the Multifunctional mobile intelligent terminal sensor includes:Single image acquisition module, function selecting module, image point
Analysis processing module and feedback control module, wherein
Described image acquisition module is made up of optical imagery module and infrared light supply, in iris recognition, range sensor, bright
The image of acquisition testing object and pass to image analysis processing module and carry out iris figure under degree sensor these three mode of operations
As identification, distance and brightness impression, and in iris recognition mode of operation and range sensor mode of operation, there is provided infrared
Light source；
The function selecting module is used to receive selection of the user to mode of operation, and is supplied to feedback control module；
The feedback control module according to different mode of operations, with reference to described image acquisition module, function selecting module, image
Analysis and processing module carries out feedback control treatment；
Described image analysis and processing module is used to be analyzed treatment to the iris image for collecting, and result is passed
It is delivered to the feedback control module.
2. sensor as claimed in claim 1, wherein, when selection enters iris recognition mode of operation, function selecting module
Notify that feedback control module enters iris recognition mode of operation；Feedback control module control image capture module opens infrared light supply
To provide infrared light supply；Feedback control module control image capture module gathers human eye iris image under infrared illumination；Image
Analysis and processing module is analyzed to iris image, judges the collection distance and picture quality of active user；In prompting user
Adjustment position carries out iris recognition to predetermined collection distance range and after obtaining and meeting the image of image quality requirements.
3. sensor as claimed in claim 1, wherein, when in talking state, into range sensor mode of operation, work(
Energy selecting module notifies that feedback control module enters range sensor mode of operation；Feedback control module controls image capture module
Infrared light supply is opened infrared light supply is provided and infrared image is gathered；Image analysis processing module carries out treatment point to infrared image
Whether analysis, draw brightness of image and judge brightness of image more than threshold value；In the case where brightness of image is more than threshold value, graphical analysis
Processing module sends judged result to feedback control module, and feedback control module is closed the screen of intelligent terminal and locks intelligence
The screen of terminal is allowed to remain off, to avoid the maloperation to intelligent terminal；In situation of the brightness of image less than threshold value
Under, then solve lock screen or keep intelligent terminal screen to be in the use state opened；The time to be specified such as feedback control module, so
After resurvey infrared image, to realize lasting Distance-sensing function, until end of conversation.
4. sensor as claimed in claim 1, wherein, when selection enters luminance sensor mode of operation, then function selection
Module notifies that feedback control module enters luminance sensor mode of operation, and image capture module is controlled in ring by feedback control module
Image is gathered under the lighting condition of border；Image analysis processing module carries out Treatment Analysis to image, draws brightness of image, then will figure
The analysis result of image brightness is exported to feedback control module；The image that feedback control module is exported according to image analysis processing module
Screen brightness value corresponding to brightness degree adjusts the screen intensity of screen.
5. a kind of mobile intelligent terminal with sensor as claimed in claim 1.
6. a kind of IMAQ and processing method for mobile intelligent terminal, methods described can gather mould using single image
Block realizes iris recognition, range sensor, three kinds of mode of operations of luminance sensor, and methods described includes step：
Under iris recognition mode of operation, there is provided infrared light supply, human eye iris image is gathered simultaneously by single image acquisition module
Passing to image analysis processing module carries out iris image identification；
Under range sensor mode of operation, there is provided infrared light supply, infrared image is gathered by single image acquisition module and is passed
Passing image analysis processing module carries out Distance Judgment；
Under luminance sensor mode of operation, single image acquisition module is passed through under ambient lighting conditions and is gathered image and is transmitted
Brightness judgement is carried out to image analysis processing module.
7. IMAQ as claimed in claim 6 and processing method, wherein, the step under iris recognition mode of operation is also wrapped
Include：Iris image is analyzed, the collection distance and picture quality of active user is judged；Arrived in prompting user's adjustment position
After predetermined collection distance range and acquisition meets the image of image quality requirements, iris recognition is carried out.
8. IMAQ as claimed in claim 6 and processing method, wherein, the step under range sensor mode of operation is also
Including：When in talking state, into range sensor mode of operation, open infrared light supply infrared light supply to be provided and is gathered
Infrared image；Treatment Analysis are carried out to infrared image, brightness of image is drawn and is judged brightness of image whether more than threshold value；In image
Brightness more than in the case of threshold value, the screen for the closing intelligent terminal and screen for locking intelligent terminal is allowed to remain turned-off shape
State, to avoid the maloperation to intelligent terminal；In the case where brightness of image is less than threshold value, then solves lock screen or keep intelligence eventually
Use state before holding screen to be in；Etc. the time to be specified, infrared image is then resurveyed, to realize that lasting distance is passed
Sense function, until end of conversation.
9. IMAQ as claimed in claim 6 and processing method, wherein, the step under luminance sensor mode of operation is also
Including：Treatment Analysis are carried out to image, draw brightness of image, then the screen brightness value according to corresponding to brightness degree is adjusted
The screen intensity of screen.
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| CN201410095055.5A CN103839054B (en) | 2014-03-14 | 2014-03-14 | Multi-functional mobile intelligent terminal sensor supporting iris recognition |
| PCT/CN2015/071445 WO2015113479A1 (en) | 2014-01-28 | 2015-01-23 | Mobile terminal iris recognition method and device having human-computer interaction mechanism |
| US15/222,609 US9798927B2 (en) | 2014-01-28 | 2016-07-28 | Mobile terminal iris recognition method and device having human-computer interaction mechanism |
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| CN107292285B (en) * | 2017-07-14 | 2020-01-14 | Oppo广东移动通信有限公司 | Iris living body detection method and related product |
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| CN107679459A (en) * | 2017-09-07 | 2018-02-09 | 努比亚技术有限公司 | Light control method, mobile terminal and the computer-readable recording medium of iris recognition |
| KR102469720B1 (en) | 2017-10-31 | 2022-11-23 | 삼성전자주식회사 | Electronic device and method for determining hyperemia grade of eye using the same |
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| CN108919952A (en) * | 2018-06-28 | 2018-11-30 | 郑州云海信息技术有限公司 | A kind of control method, device, equipment and the storage medium of intelligent terminal screen |
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