CN107679459A - Light control method, mobile terminal and the computer-readable recording medium of iris recognition - Google Patents
Light control method, mobile terminal and the computer-readable recording medium of iris recognition Download PDFInfo
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- CN107679459A CN107679459A CN201710802556.6A CN201710802556A CN107679459A CN 107679459 A CN107679459 A CN 107679459A CN 201710802556 A CN201710802556 A CN 201710802556A CN 107679459 A CN107679459 A CN 107679459A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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Abstract
The invention discloses a kind of light control method of iris recognition, this method includes：Control the brightness of luminance sensor detection ambient light；When the brightness of ambient light is less than predetermined threshold value, the original intensity of the screen of the mobile terminal is set；Start camera collection image；Judge whether that iris recognition can be carried out from described image；When None- identified, the screen intensity is adjusted according to preset rules within default time and brightness range, until successfully carrying out iris recognition；When beyond the time or brightness range still None- identified, recognition failures are prompted.The embodiment of the invention also discloses a kind of mobile terminal and computer-readable recording medium.By technical scheme of the embodiment of the present invention, screen intensity can be adjusted under low light environment, realize the iris recognition to user.
Description
Technical field
The present invention relates to technical field of image processing, more particularly to a kind of light control method of iris recognition, movement are eventually
End and computer-readable recording medium.
Background technology
Iris recognition is that the technology of identification is carried out based on the iris in eyes.Iris is formed in prenatal development stage
Afterwards, will be to maintain in whole life course constant.These features determine the uniqueness of iris feature, while also determine
The uniqueness of identification.Also, the advantages of iris recognition is, different from fingerprint, iris is difficult to replicate or forged.In order to logical
Cross and carry out iris recognition using iris identification equipment, the eyeball for the user of iris recognition should be positioned at iris identification equipment
Iris recognition opereating specification within.
In addition, when carrying out iris scan using equipment such as mobile terminals to ensure the security of user's operation, it is necessary to have
The light source of sufficient intensity is supplied to the camera of mobile terminal to carry out iris recognition.
Therefore, how to ensure to realize under low light environment and body iris is accurately identified, be current iris recognition technology
The problem urgently to be resolved hurrily of field one.
The content of the invention
It is a primary object of the present invention to the light control method for proposing a kind of iris recognition and corresponding mobile terminal, purport
Solving how to realize under low light environment the technical problem to the iris recognition of user.
To achieve the above object, the light control method of a kind of iris recognition provided by the invention, the method comprising the steps of：
Control the brightness of luminance sensor detection ambient light；When the brightness of ambient light is less than predetermined threshold value, the mobile terminal is set
Screen original intensity；Start camera collection image；Judge whether that iris recognition can be carried out from described image；When can not
During identification, the screen intensity is adjusted according to preset rules within default time and brightness range, until successfully carrying out iris
Identification；And when beyond the time or brightness range still None- identified, prompt recognition failures.
Preferably, the brightness range is between X to 4X, wherein the X is the original intensity of the screen；The time
Since scope be the timing starting the camera collection described image in 10 seconds.
Preferably, the preset rules are that the brightness of the screen once is increased into 0.1X per recognition failures.
Preferably, it is described to adjust the screen intensity according to preset rules within default time and brightness range, until
The step of success progress iris recognition, specifically includes：Once adjusted by brightness of the preset rules to the screen；Control
Make the camera and gather image again；Judge whether that iris recognition can be carried out from the image gathered again；Work as None- identified
When, judge whether to exceed the time or brightness range, if not exceeded, then by brightness of the preset rules to the screen entering
Row adjusts again.
Preferably, this method also includes step when beyond the time or brightness range still None- identified：Judge current
Whether identification total degree or total duration reach preset upper limit；When the not up to preset upper limit, user's adjustment position is prompted；When
When having reached the preset upper limit, user's identification failure is prompted.
Preferably, the position includes position and user present position of the human eye relative to the screen.
Preferably, the identification total degree refers to carry out iris after the camera progress IMAQ is started for the first time
Identification starts counting up, to the total degree of current last time iris recognition；The identification total duration refers to start institute from first time
State camera progress IMAQ and start timing, to the total duration of current time.
Preferably, this method also includes step：After the iris recognition is completed, by the brightness adjustment of the screen to institute
State original intensity.
In addition, to achieve the above object, the present invention also proposes a kind of mobile terminal, and the mobile terminal includes：Memory,
Processor, audio frequency apparatus and the light control for being stored in the iris recognition that can be run on the memory and on the processor
Program, the light control program of the iris recognition is by the light control method of computing device iris recognition described above
The step of.
Further, to achieve the above object, the present invention also provides a kind of computer-readable recording medium, the computer
The light control program of iris recognition is stored with readable storage medium storing program for executing, the light control program of the iris recognition is by processor
The step of light control method of iris recognition described above is realized during execution.
Light control method, mobile terminal and the computer-readable recording medium of iris recognition proposed by the present invention, can
When the mobile terminal is currently under low light environment, screen intensity is adjusted according to preset rules, to ensure having sufficient intensity
Light source be supplied to mobile terminal camera carry out IMAQ, so as to realize iris recognition.Also, in order to avoid under dim light
It is bright for a long time to stimulate harmful human eye, the time adjusted and brightness range can be pre-set.When in the default time and
In brightness range during None- identified, user can be prompted to adjust position or user present position of the human eye relative to the screen,
Then it is identified again.In addition, after the iris recognition is completed, no matter success or failure is identified, by the mobile terminal
The brightness of screen progressively weaken, until reverting to set original intensity, the too strong harm users of screen intensity can be avoided
Eyes.
Brief description of the drawings
Fig. 1 is the hardware architecture diagram for the mobile terminal for realizing each embodiment of the present invention；
Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1；
Fig. 3 is a kind of flow chart of the light control method for iris recognition that first embodiment of the invention proposes；
Fig. 4 is the schematic diagram for the brightness that ambient light is detected in the present invention；
Fig. 5 is the schematic diagram of camera collection image in the present invention；
Fig. 6 is the schematic diagram of heretofore described image；
Fig. 7 is the specific refined flow chart of step S308 in Fig. 3；
Fig. 8 is a kind of flow chart of the light control method for iris recognition that second embodiment of the invention proposes；
Fig. 9 is a kind of flow chart of the light control method for iris recognition that third embodiment of the invention proposes；
Figure 10 is a kind of module diagram for mobile terminal that fourth embodiment of the invention proposes；
Figure 11 is a kind of module diagram of the lighting control system for iris recognition that fifth embodiment of the invention proposes.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
In follow-up description, the suffix using such as " module ", " part " or " unit " for representing element is only
Be advantageous to the explanation of the present invention, itself there is no a specific meaning.Therefore, " module ", " part " or " unit " can mix
Ground uses.
Terminal can be implemented in a variety of manners.For example, the terminal described in the present invention can include such as mobile phone, flat board
Computer, notebook computer, palm PC, personal digital assistant (Personal Digital Assistant, PDA), portable
Media player (Portable Media Player, PMP), guider, wearable device, Intelligent bracelet, pedometer etc. move
Dynamic terminal, and the fixed terminal such as digital TV, desktop computer.
It will be illustrated in subsequent descriptions by taking mobile terminal as an example, it will be appreciated by those skilled in the art that except special
Outside element for moving purpose, construction according to the embodiment of the present invention can also apply to the terminal of fixed type.
Referring to Fig. 1, its hardware architecture diagram for a kind of mobile terminal of each embodiment of the realization present invention, the shifting
Dynamic terminal 100 can include：RF (Radio Frequency, radio frequency) unit 101, WiFi module 102, audio output unit
103rd, A/V (audio/video) input block 104, sensor 105, display unit 106, user input unit 107, interface unit
108th, the part such as memory 109, processor 110 and power supply 111.It will be understood by those skilled in the art that shown in Fig. 1
Mobile terminal structure does not form the restriction to mobile terminal, and mobile terminal can be included than illustrating more or less parts,
Either combine some parts or different parts arrangement.
The all parts of mobile terminal are specifically introduced with reference to Fig. 1：
Radio frequency unit 101 can be used for receiving and sending messages or communication process in, the reception and transmission of signal, specifically, by base station
Downlink information receive after, handled to processor 110；In addition, up data are sent to base station.Generally, radio frequency unit 101
Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, penetrate
Frequency unit 101 can also be communicated by radio communication with network and other equipment.Above-mentioned radio communication can use any communication
Standard or agreement, including but not limited to GSM (Global System of Mobile communication, global system for mobile telecommunications
System), GPRS (General Packet Radio Service, general packet radio service), CDMA2000 (Code
Division Multiple Access 2000, CDMA 2000), WCDMA (Wideband Code Division
Multiple Access, WCDMA), TD-SCDMA (Time Division-Synchronous Code
Division Multiple Access, TD SDMA), FDD-LTE (Frequency Division
Duplexing-Long Term Evolution, FDD Long Term Evolution) and TDD-LTE (Time Division
Duplexing-Long Term Evolution, time division duplex Long Term Evolution) etc..
WiFi belongs to short range wireless transmission technology, and mobile terminal can help user to receive and dispatch electricity by WiFi module 102
Sub- mail, browse webpage and access streaming video etc., it has provided the user wireless broadband internet and accessed.Although Fig. 1 shows
Go out WiFi module 102, but it is understood that, it is simultaneously not belonging to must be configured into for mobile terminal, completely can be according to need
To be omitted in the essential scope for do not change invention.
Audio output unit 103 can be in call signal reception pattern, call mode, record mould in mobile terminal 100
When under the isotypes such as formula, speech recognition mode, broadcast reception mode, by radio frequency unit 101 or WiFi module 102 it is receiving or
It is sound that the voice data stored in memory 109, which is converted into audio signal and exported,.Moreover, audio output unit 103
The audio output related to the specific function that mobile terminal 100 performs can also be provided (for example, call signal receives sound, disappeared
Breath receives sound etc.).Audio output unit 103 can include loudspeaker, buzzer etc..
A/V input blocks 104 are used to receive audio or video signal.A/V input blocks 104 can include graphics processor
(Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 is in video acquisition mode
Or the static images or the view data of video obtained in image capture mode by image capture apparatus (such as camera) are carried out
Reason.Picture frame after processing may be displayed on display unit 106.Picture frame after the processing of graphics processor 1041 can be deposited
Storage is transmitted in memory 109 (or other storage mediums) or via radio frequency unit 101 or WiFi module 102.Mike
Wind 1042 can connect in telephone calling model, logging mode, speech recognition mode etc. operational mode via microphone 1042
Quiet down sound (voice data), and can be voice data by such acoustic processing.Audio (voice) data after processing can
To be converted to the form output that mobile communication base station can be sent to via radio frequency unit 101 in the case of telephone calling model.
Microphone 1042 can implement various types of noises and eliminate (or suppression) algorithm to eliminate (or suppression) in reception and send sound
Caused noise or interference during frequency signal.
Mobile terminal 100 also includes at least one sensor 105, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity transducer, wherein, ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 1061, and proximity transducer can close when mobile terminal 100 is moved in one's ear
Display panel 1061 and/or backlight.As one kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axles) size of acceleration, size and the direction of gravity are can detect that when static, the application available for identification mobile phone posture
(such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, percussion) etc.；
The fingerprint sensor that can also configure as mobile phone, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer,
The other sensors such as hygrometer, thermometer, infrared ray sensor, will not be repeated here.
Display unit 106 is used for the information for showing the information inputted by user or being supplied to user.Display unit 106 can wrap
Display panel 1061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configures display panel 1061.
User input unit 107 can be used for the numeral or character information for receiving input, and produce the use with mobile terminal
The key signals input that family is set and function control is relevant.Specifically, user input unit 107 may include contact panel 1071 with
And other input equipments 1072.Contact panel 1071, also referred to as touch-screen, collect touch operation of the user on or near it
(for example user uses any suitable objects or annex such as finger, stylus on contact panel 1071 or in contact panel 1071
Neighbouring operation), and corresponding attachment means are driven according to formula set in advance.Contact panel 1071 may include touch detection
Two parts of device and touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation band
The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it
Contact coordinate is converted into, then gives processor 110, and the order sent of reception processing device 110 and can be performed.In addition, can
To realize contact panel 1071 using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except contact panel
1071, user input unit 107 can also include other input equipments 1072.Specifically, other input equipments 1072 can wrap
Include but be not limited to physical keyboard, in function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc.
One or more, do not limit herein specifically.
Further, contact panel 1071 can cover display panel 1061, detect thereon when contact panel 1071 or
After neighbouring touch operation, processor 110 is sent to determine the type of touch event, is followed by subsequent processing device 110 according to touch thing
The type of part provides corresponding visual output on display panel 1061.Although in Fig. 1, contact panel 1071 and display panel
1061 be the part independent as two to realize the input of mobile terminal and output function, but in certain embodiments, can
Input and the output function of mobile terminal are realized so that contact panel 1071 and display panel 1061 is integrated, is not done herein specifically
Limit.
Interface unit 108 is connected the interface that can pass through as at least one external device (ED) with mobile terminal 100.For example,
External device (ED) can include wired or wireless head-band earphone port, external power source (or battery charger) port, wired or nothing
Line FPDP, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Interface unit 108 can be used for receiving the input from external device (ED) (for example, number
It is believed that breath, electric power etc.) and the input received is transferred to one or more elements in mobile terminal 100 or can be with
For transmitting data between mobile terminal 100 and external device (ED).
Memory 109 can be used for storage software program and various data.Memory 109 can mainly include storing program area
And storage data field, wherein, storing program area can storage program area, application program (such as the sound needed at least one function
Sound playing function, image player function etc.) etc.；Storage data field can store according to mobile phone use created data (such as
Voice data, phone directory etc.) etc..In addition, memory 109 can include high-speed random access memory, can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 110 is the control centre of mobile terminal, utilizes each of various interfaces and the whole mobile terminal of connection
Individual part, by running or performing the software program and/or module that are stored in memory 109, and call and be stored in storage
Data in device 109, the various functions and processing data of mobile terminal are performed, so as to carry out integral monitoring to mobile terminal.Place
Reason device 110 may include one or more processing units；Preferably, processor 110 can integrate application processor and modulatedemodulate is mediated
Device is managed, wherein, application processor mainly handles operating system, user interface and application program etc., and modem processor is main
Handle radio communication.It is understood that above-mentioned modem processor can not also be integrated into processor 110.
Mobile terminal 100 can also include the power supply 111 (such as battery) to all parts power supply, it is preferred that power supply 111
Can be logically contiguous by power-supply management system and processor 110, so as to realize management charging by power-supply management system, put
The function such as electricity and power managed.
Although Fig. 1 is not shown, mobile terminal 100 can also will not be repeated here including bluetooth module etc..
For the ease of understanding the embodiment of the present invention, the communications network system being based on below to the mobile terminal of the present invention enters
Row description.
Referring to Fig. 2, Fig. 2 is a kind of communications network system Organization Chart provided in an embodiment of the present invention, the communication network system
Unite as the LTE system of universal mobile communications technology, the UE that the LTE system includes communicating connection successively (User Equipment, is used
Family equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network, evolved UMTS lands
Ground wireless access network) 202, EPC (Evolved Packet Core, evolved packet-based core networks) 203 and operator IP operation
204。
Specifically, UE201 can be above-mentioned terminal 100, and here is omitted.
E-UTRAN202 includes eNodeB2021 and other eNodeB2022 etc..Wherein, eNodeB2021 can be by returning
Journey (backhaul) (such as X2 interface) is connected with other eNodeB2022, and eNodeB2021 is connected to EPC203,
ENodeB2021 can provide UE201 to EPC203 access.
EPC203 can include MME (Mobility Management Entity, mobility management entity) 2031, HSS
(Home Subscriber Server, home subscriber server) 2032, other MME2033, SGW (Serving Gate Way,
Gateway) 2034, PGW (PDN Gate Way, grouped data network gateway) 2035 and PCRF (Policy and
Charging Rules Function, policy and rate functional entity) 2036 etc..Wherein, MME2031 be processing UE201 and
The control node of signaling between EPC203, there is provided carrying and connection management.HSS2032 is all to manage for providing some registers
Such as the function of attaching position register (not shown) etc, and preserve some and used about service features, data rate etc.
The special information in family.All customer data can be transmitted by SGW2034, and PGW2035 can provide UE 201 IP
Address is distributed and other functions, and PCRF2036 is strategy and the charging control strategic decision-making of business data flow and IP bearing resources
Point, it selects and provided available strategy and charging control decision-making with charge execution function unit (not shown) for strategy.
IP operation 204 can include internet, Intranet, IMS (IP Multimedia Subsystem, IP multimedia
System) or other IP operations etc..
Although above-mentioned be described by taking LTE system as an example, those skilled in the art it is to be understood that the present invention not only
Suitable for LTE system, be readily applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA with
And following new network system etc., do not limit herein.
Based on above-mentioned mobile terminal hardware configuration and communications network system, each embodiment of the inventive method is proposed.
The light control method of a kind of iris recognition proposed by the present invention, applied in mobile terminal, in dim light ring
Screen intensity is adjusted under border, to complete iris recognition.
Embodiment one
As shown in figure 3, first embodiment of the invention proposes a kind of light control method of iris recognition, this method include with
Lower step：
S300, the brightness of control luminance sensor detection ambient light.
Specifically, first, before iris recognition is carried out, control described in the luminance sensor detection in the mobile terminal
The brightness of ambient light around mobile terminal (refering to shown in Fig. 4).
S302, when the brightness of ambient light is less than predetermined threshold value, the original intensity of the screen of mobile terminal is set.
Specifically, after luminance sensor detects the brightness of the ambient light, by the brightness of the ambient light with presetting
Threshold value is contrasted.When the brightness of the ambient light is less than the predetermined threshold value, judge that the mobile terminal is currently in
, it is necessary to carry out light adjustment in low light environment.When the brightness of the ambient light is more than or equal to the predetermined threshold value, institute is judged
State mobile terminal to be not currently in low light environment, can directly carry out iris recognition.
When the brightness of the ambient light is less than the predetermined threshold value, the original intensity of the screen is set first, such as
Brightness X, to be subsequently adjusted on the basis of the original intensity, until iris recognition can be carried out successfully.
S304, start camera collection image.
Specifically, in the state of the screen is original intensity, start the camera of the mobile terminal, make its collection
Present image (refering to shown in Fig. 5).
S306, judge whether that iris recognition can be carried out from described image.
Specifically, after described image (refering to shown in Fig. 6) of camera collection is received, the mobile terminal is controlled
Iris recognition unit is analyzed described image, is judged whether that position of human eye can be found and is successfully carried out iris recognition.
S308, when None- identified, screen intensity is adjusted according to preset rules within default time and brightness range, directly
To successfully carrying out iris recognition.
Specifically, the bright identification that can be made one a myosis iris expansion and be advantageous to iris, human eye it is acceptable
Maximum bright intensity is 10^6cd/ ㎡ (nit), and bright intensity should be less than this intensity.But human eye is to brightness under varying environment
Feel different, for example, in daylight environment brightness 10,000 nit, the brightness range that human eye can about be differentiated is 200~20000
Nit, the brightness sensation less than 200 nits are black.And night-environment is when being 30 nit, distinguishable brightness range is 1~
200 nits, the at this moment brightness of 100 nits just cause quite bright sensation, and the only brightness less than 1 nit just causes black sense
Feel.Harmful human eye is stimulated in order to avoid bright for a long time under dim light, it is in 10 seconds that the time range, which can be set, is imaged from starting
Head collection described image starts timing.Assuming that the original intensity of the screen is X, then it is X to 4X to set the brightness range
Between, it is that the brightness of the screen once is increased into 0.1X per recognition failures to set the preset rules.The specific stream of the step
Journey details is refering to shown in Fig. 7.
S310, when beyond the time or brightness range still None- identified, prompt recognition failures.
Specifically, after the brightness for adjusting the screen every time, the camera is controlled to gather image again, and judgement is
It is no that iris recognition can be carried out from the image gathered again.When can not still find position of human eye more than 10 seconds or can not successfully enter
During row iris recognition, or the upper limit (4X) of the brightness range is reached when the brightness of the screen and can not still find human eye
Position or when can not successfully carry out iris recognition, prompts the user with iris recognition failure.
As shown in fig. 7, being the specific refined flow chart of step 308 in Fig. 3, comprise the following steps：
S400, once adjusted by brightness of the preset rules to screen.
Specifically, it is assumed that the original intensity of the screen is X, and the brightness range is between X to 4X, the preset rules
The brightness of the screen is once increased into 0.1X for every recognition failures.Therefore, the brightness of the screen is increased when adjusting every time
Add 0.1X.
S402, control camera gather image again.
Specifically, after the brightness of the screen increases 0.1X, the camera of the mobile terminal is controlled, it is adopted again
Collect present image.
S404, judge whether that iris recognition can be carried out from the image gathered again.
Specifically, after the image gathered again described in camera collection is received, the rainbow of the mobile terminal is controlled
Film recognition unit is analyzed described image, is judged whether that position of human eye can be found and is successfully carried out iris recognition.If can be with
Find position of human eye and successfully carry out iris recognition, then flow terminates.If position of human eye can not be found or can not successfully be carried out
Iris recognition, then perform step S406.
S406, judge whether to exceed default time or brightness range.
Specifically, when that can not find position of human eye or successfully can not carry out iris recognition, judge to start from first time
Camera collection described image started to current time, if more than default time range, i.e., 10 seconds.Also, described in judging
If the brightness of screen continues to strengthen, if can exceed default brightness range, i.e. 4X.If not over default time or brightness
Scope, then the step S400 is returned to, once adjusted by brightness of the preset rules to screen again.If can exceed described
Between scope or the brightness range, then flow terminate.
Embodiment two
As shown in figure 8, second embodiment of the invention proposes a kind of light control method of iris recognition.In second embodiment
In, the step S500-S508 of the light control method of the iris recognition and the step S300-S308 of second embodiment are similar
Seemingly, difference is step S310 replacing with step S510-S514.
This method comprises the following steps：
S500, the brightness of control luminance sensor detection ambient light.
Specifically, first, before iris recognition is carried out, control described in the luminance sensor detection in the mobile terminal
The brightness of ambient light around mobile terminal (refering to shown in Fig. 4).
S502, when the brightness of ambient light is less than predetermined threshold value, the original intensity of the screen of mobile terminal is set.
Specifically, after luminance sensor detects the brightness of the ambient light, by the brightness of the ambient light with presetting
Threshold value is contrasted.When the brightness of the ambient light is less than the predetermined threshold value, judge that the mobile terminal is currently in
, it is necessary to carry out light adjustment in low light environment.When the brightness of the ambient light is more than or equal to the predetermined threshold value, institute is judged
State mobile terminal to be not currently in low light environment, can directly carry out iris recognition.
When the brightness of the ambient light is less than the predetermined threshold value, the original intensity of the screen is set first, such as
Brightness X, to be subsequently adjusted on the basis of the original intensity, until iris recognition can be carried out successfully.
S504, start camera collection image.
Specifically, in the state of the screen is original intensity, start the camera of the mobile terminal, make its collection
Present image (refering to shown in Fig. 5).
S506, judge whether that iris recognition can be carried out from described image.
Specifically, after described image (refering to shown in Fig. 6) of camera collection is received, the mobile terminal is controlled
Iris recognition unit is analyzed described image, is judged whether that position of human eye can be found and is successfully carried out iris recognition.
S508, when None- identified, screen intensity is adjusted according to preset rules within default time and brightness range, directly
To successfully carrying out iris recognition.
Specifically, the bright identification that can be made one a myosis iris expansion and be advantageous to iris, human eye it is acceptable
Maximum bright intensity is 10^6cd/ ㎡ (nit), and bright intensity should be less than this intensity.But human eye is to brightness under varying environment
Feel different, for example, in daylight environment brightness 10,000 nit, the brightness range that human eye can about be differentiated is 200~20000
Nit, the brightness sensation less than 200 nits are black.And night-environment is when being 30 nit, distinguishable brightness range is 1~
200 nits, the at this moment brightness of 100 nits just cause quite bright sensation, and the only brightness less than 1 nit just causes black sense
Feel.Harmful human eye is stimulated in order to avoid bright for a long time under dim light, it is in 10 seconds that the time range, which can be set, is imaged from starting
Head collection described image starts timing.Assuming that the original intensity of the screen is X, then it is X to 4X to set the brightness range
Between, it is that the brightness of the screen once is increased into 0.1X per recognition failures to set the preset rules.
S510, when beyond the time or brightness range still None- identified, judge current identification total degree or total duration
Whether preset upper limit is reached.
Specifically, after the brightness for adjusting the screen every time, the camera is controlled to gather image again, and judgement is
It is no that iris recognition can be carried out from the image gathered again.When can not still find position of human eye more than 10 seconds or can not successfully enter
During row iris recognition, or the upper limit (4X) of the brightness range is reached when the brightness of the screen and can not still find human eye
Position or when can not successfully carry out iris recognition, judges whether current identification total degree or total duration reach preset upper limit.
The identification total degree refers to that starting camera since first time counted after IMAQ progress iris recognition
Number, to the total degree of current last time iris recognition.The identification total duration refers to that starting camera from first time carries out figure
As collection beginning timing, to the total duration of current time.One is set respectively to the identification total degree or identification total duration in advance
Individual higher limit, if currently identification total degree or total duration reach preset upper limit, perform step S514；If currently identify total degree
Preset upper limit is not up to total duration, then performs the step S512.
In the present embodiment, it is possible to use only identification total degree identifies that one in total duration is judged；Can also
Judged jointly using the two parameters, as long as wherein there is one to reach preset upper limit, that is, perform step S514.
S512, prompt user's adjustment position.
Specifically, the position includes position and user present position of the human eye relative to the screen.That is, work as
User seen after the prompting, it is necessary to adjust shooting angle and distance, changes position of the human eye relative to the screen, such as with
Family is by eyes closer to the screen.User can also adjust the position oneself being presently in, that is, change a place and clapped
Take the photograph, such as change to the stronger place of environmental light brightness.The step S504 is then back to, controls camera to carry out image again
Collection.
S514, prompt user's identification failure.
Specifically, harmful human eye is stimulated in order to avoid bright for a long time under dim light, if currently identification total degree or total duration
Reach preset upper limit, then do not continue to carry out iris recognition, prompt the user with iris recognition failure.
Embodiment three
As shown in figure 9, third embodiment of the invention proposes a kind of light control method of iris recognition.In 3rd embodiment
In, the step S600-S614 of the light control method of the iris recognition and the step S500-S514 of second embodiment are similar
Seemingly, difference is that this method also includes step S616.
This method comprises the following steps：
S600, the brightness of control luminance sensor detection ambient light.
S602, when the brightness of ambient light is less than predetermined threshold value, the original intensity of the screen of mobile terminal is set.
S604, start camera collection image.
S606, judge whether that iris recognition can be carried out from described image.
S608, when None- identified, screen intensity is adjusted according to preset rules within default time and brightness range, directly
To successfully carrying out iris recognition.
Specifically, harmful human eye is stimulated in order to avoid bright for a long time under dim light, it is 10 seconds that the time range, which can be set,
It is interior, the timing since being started camera collection described image.Assuming that the original intensity of the screen is X, then is set described bright
Scope is spent between X to 4X, and it is that the brightness of the screen once is increased into 0.1X per recognition failures to set the preset rules.
S610, when beyond the time or brightness range still None- identified, judge current identification total degree or total duration
Whether preset upper limit is reached.
If currently identification total degree or total duration reach preset upper limit, step S614 is performed；If currently identify total degree
Preset upper limit is not up to total duration, then performs the step S612.
In the present embodiment, it is possible to use only identification total degree identifies that one in total duration is judged；Can also
Judged jointly using the two parameters, as long as wherein there is one to reach preset upper limit, that is, perform step S614.
S612, prompt user's adjustment position.
Specifically, the position includes position and user present position of the human eye relative to the screen.That is, work as
User seen after the prompting, it is necessary to adjust shooting angle and distance, changes position of the human eye relative to the screen, such as with
Family is by eyes closer to the screen.User can also adjust the position oneself being presently in, that is, change a place and clapped
Take the photograph, such as change to the stronger place of environmental light brightness.The step S604 is then back to, controls camera to carry out image again
Collection.
S614, prompt user's identification failure.
Specifically, harmful human eye is stimulated in order to avoid bright for a long time under dim light, if currently identification total degree or total duration
Reach preset upper limit, then do not continue to carry out iris recognition, prompt the user with iris recognition failure.
S616, by the brightness adjustment of the screen to the original intensity.
Specifically, after the iris recognition is completed, no matter success or failure is identified, by the screen of the mobile terminal
Brightness progressively weakens, until set original intensity is reverted to, in order to avoid the too strong harm users eyes of screen intensity.
The present invention further provides a kind of mobile terminal, the mobile terminal includes memory, processor, camera, bright
Spend lighting control system of sensor, screen, iris recognition unit and iris recognition etc..The light control system of the iris recognition
Unite for the brightness that the screen is adjusted under low light environment, to complete iris recognition.
Example IV
As shown in Figure 10, fourth embodiment of the invention proposes a kind of mobile terminal 8.The mobile terminal 8 includes memory
80th, processor 82, the lighting control system 84 of iris recognition, camera 85, luminance sensor 86, screen 87 and iris recognition list
Member 88.
Wherein, the memory 80 comprises at least a type of readable storage medium storing program for executing, and the shifting is installed on for storing
The operating system and types of applications software of dynamic terminal 8, such as program code of lighting control system 84 of iris recognition etc..This
Outside, the memory 80 can be also used for temporarily storing the Various types of data that has exported or will export.
The processor 82 can be in certain embodiments central processing unit (Central Processing Unit,
CPU), controller, microcontroller, microprocessor or other data processing chips.The processor 82 is generally used for controlling the shifting
The overall operation of dynamic terminal 8.In the present embodiment, the processor 82 is used to run the program code stored in the memory 80
Or processing data, such as run lighting control system 84 of the iris recognition etc..
The camera 85 is used to gather image.The luminance sensor 86 is used to detect around the mobile terminal 8
The brightness of ambient light.The iris recognition unit 88 is used to carry out iris recognition from the image of the camera 85 collection, with
Verify user identity.
Embodiment five
As shown in figure 11, fifth embodiment of the invention proposes a kind of lighting control system 84 of iris recognition.In this implementation
In example, the lighting control system 84 of the iris recognition includes：
Detection module 800, for controlling luminance sensor 86 to detect the brightness of ambient light.
Specifically, before iris recognition is carried out, the detection module 800 controls the brightness in the mobile terminal 8 to pass
Sensor 86 detects the brightness of the ambient light around the mobile terminal 8 (refering to shown in Fig. 4).
Setup module 802, for when the brightness of ambient light is less than predetermined threshold value, setting the screen 87 of mobile terminal 8
Original intensity.
Specifically, after luminance sensor 86 detects the brightness of the ambient light, setup module 802 is by the ambient light
Brightness contrasted with predetermined threshold value.When the brightness of the ambient light is less than the predetermined threshold value, setup module 802 judges
The mobile terminal 8 is currently in low light environment, it is necessary to carry out light adjustment.When the brightness of the ambient light is more than or waits
When the predetermined threshold value, judge that the mobile terminal 8 is not currently in low light environment, can directly carry out iris recognition.
When the brightness of the ambient light is less than the predetermined threshold value, setup module 802 sets the screen 87 first
Original intensity, such as brightness X, to be subsequently adjusted on the basis of the original intensity, until rainbow can be carried out successfully
Film identifies.
Acquisition module 804, image is gathered for starting camera 85.
Specifically, in the state of the screen 87 is original intensity, start the camera 85 of the mobile terminal 8, make
It gathers present image (refering to shown in Fig. 5).
Judge module 806, for judging whether that iris recognition can be carried out from described image.
Specifically, after described image (refering to shown in Fig. 6) of the collection of camera 85 is received, judge module 806 controls
The iris recognition unit 88 of the mobile terminal 8 is analyzed described image, judges whether to find position of human eye and successfully
Carry out iris recognition.
Adjusting module 808, for when None- identified, being adjusted within default time and brightness range according to preset rules
The brightness of screen 87, until successfully carrying out iris recognition.
Specifically, the bright identification that can be made one a myosis iris expansion and be advantageous to iris, human eye it is acceptable
Maximum bright intensity is 10^6cd/ ㎡ (nit), and bright intensity should be less than this intensity.But human eye is to brightness under varying environment
Feel different, for example, in daylight environment brightness 10,000 nit, the brightness range that human eye can about be differentiated is 200~20000
Nit, the brightness sensation less than 200 nits are black.And night-environment is when being 30 nit, distinguishable brightness range is 1~
200 nits, the at this moment brightness of 100 nits just cause quite bright sensation, and the only brightness less than 1 nit just causes black sense
Feel.Harmful human eye is stimulated in order to avoid bright for a long time under dim light, it is in 10 seconds that the time range, which can be set, is imaged from starting
First 85 collection described image starts timing.Assuming that the original intensity of the screen 87 is X, then it is X to set the brightness range
It is that the brightness of the screen 87 is once increased into 0.1X per recognition failures to the preset rules between 4X, are set.
Reminding module 810, for when beyond the time or brightness range still None- identified, prompting recognition failures.
Specifically, after adjusting module 808 adjusts the brightness of the screen 87 every time, acquisition module 804 controls described take the photograph
As head gathers image again, judge module 806 judges whether that iris recognition can be carried out from the image gathered again.When more than 10
Second can not still be found when position of human eye either can not successfully carry out iris recognition or when the brightness of the screen 87 has reached
When the upper limit (4X) of the brightness range can not still find position of human eye or can not successfully carry out iris recognition, reminding module
810 prompt the user with iris recognition failure.
Further, the judge module 806, it is additionally operable to when beyond the time or brightness range still None- identified,
Judge whether current identification total degree or total duration reach preset upper limit.
Specifically, when can not still find position of human eye more than 10 seconds and either successfully can not carry out iris recognition or work as
The upper limit (4X) that the brightness of the screen 87 has reached the brightness range can not still find position of human eye or can not succeed
When carrying out iris recognition, judge module 806 judges currently to identify whether total degree or total duration reach preset upper limit.
The identification total degree refers to that starting camera 85 since first time is carried out after IMAQ progress iris recognition
Count, to the total degree of current last time iris recognition.The identification total duration refers to that starting camera 85 from first time enters
Row IMAQ starts timing, to the total duration of current time.The identification total degree or identification total duration are set respectively in advance
A higher limit is put, if currently identification total degree or total duration reach preset upper limit, does not continue to carry out iris recognition.
In the present embodiment, it is possible to use only identification total degree identifies that one in total duration is judged；Can also
Judged jointly using the two parameters, as long as wherein there is one to reach preset upper limit, that is, do not continue to carry out iris recognition.
The reminding module 810, it is additionally operable to, when currently identification total degree and total duration are not up to preset upper limit, prompt to use
Family adjustment position.
Specifically, the position includes position and user present position of the human eye relative to the screen 87.That is,
, it is necessary to adjust shooting angle and distance after user sees the prompting, change human eye relative to the position of the screen 87, example
Such as user by eyes closer to the screen 87.User can also adjust the position oneself being presently in, that is, change a place
Shot, such as changed to the stronger place of environmental light brightness.Then acquisition module 804 controls camera to carry out image again
Collection.
The reminding module 810, it is additionally operable to, when currently identification total degree or total duration reach preset upper limit, prompt user
Recognition failures.
Specifically, harmful human eye is stimulated in order to avoid bright for a long time under dim light, if currently identification total degree or total duration
Reach preset upper limit, then do not continue to carry out iris recognition, prompt the user with iris recognition failure.
Further, the adjusting module 808, it is additionally operable to the brightness adjustment of the screen 87 to the original intensity.
Specifically, after the iris recognition is completed, no matter success or failure is identified, by the screen of the mobile terminal 8
87 brightness progressively weakens, until set original intensity is reverted to, in order to avoid the too strong harm users eyes of 87 degree of screen.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements not only include those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Other identical element also be present in the process of key element, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme is substantially done to prior art in other words
Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal (can be mobile phone, computer, service
Device, air conditioner, or network equipment etc.) perform method described in each embodiment of the present invention.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (10)
- A kind of 1. light control method of iris recognition, applied in mobile terminal, it is characterised in that the method comprising the steps of：Control the brightness of luminance sensor detection ambient light；When the brightness of ambient light is less than predetermined threshold value, the original intensity of the screen of the mobile terminal is set；Start camera collection image；Judge whether that iris recognition can be carried out from described image；When None- identified, the screen intensity is adjusted according to preset rules within default time and brightness range, until into Work(carries out iris recognition；AndWhen beyond the time or brightness range still None- identified, recognition failures are prompted.
- 2. the light control method of iris recognition according to claim 1, it is characterised in that the brightness range arrives for X Between 4X, wherein the X is the original intensity of the screen；The time range is in 10 seconds, is adopted from the camera is started Collection described image starts timing.
- 3. the light control method of iris recognition according to claim 2, it is characterised in that the preset rules are often to know The brightness of the screen 0.1X Shi Bai not be increased into once.
- 4. the light control method of iris recognition according to claim 1, it is characterised in that it is described in the default time and The screen intensity is adjusted according to preset rules in brightness range, until the step of successfully carrying out iris recognition specifically includes：Once adjusted by brightness of the preset rules to the screen；The camera is controlled to gather image again；Judge whether that iris recognition can be carried out from the image gathered again；When None- identified, judge whether to exceed the time or brightness range, if not exceeded, then by the preset rules to institute The brightness for stating screen is adjusted again.
- 5. the light control method of iris recognition according to claim 1, it is characterised in that this method when beyond it is described when Between or brightness range still None- identified when also include step：Judge whether current identification total degree or total duration reach preset upper limit；When the not up to preset upper limit, user's adjustment position is prompted；When having reached the preset upper limit, user's identification failure is prompted.
- 6. the light control method of iris recognition according to claim 5, it is characterised in that the position includes human eye phase Position and user present position for the screen.
- 7. the light control method of iris recognition according to claim 5, it is characterised in that the identification total degree refers to Start counting up from progress iris recognition after the camera carries out IMAQ is started for the first time, know to current last time iris Other total degree；Since the identification total duration refer to the timing starting the camera for the first time and carrying out IMAQ, to working as The total duration of preceding time.
- 8. the light control method of iris recognition according to claim 5, it is characterised in that this method also includes step：After the iris recognition is completed, by the brightness adjustment of the screen to the original intensity.
- 9. a kind of mobile terminal, it is characterised in that the mobile terminal includes：Memory, processor, camera, brightness sensing Device, screen, iris recognition unit and the light for being stored in the iris recognition that can be run on the memory and on the processor Line traffic control program, the light control program of the iris recognition are realized during the computing device as appointed in claim 1 to 8 The step of light control method of iris recognition described in one.
- 10. a kind of computer-readable recording medium, it is characterised in that iris knowledge is stored with the computer-readable recording medium Other light control program, realized when the light control program of the iris recognition is executed by processor as in claim 1 to 8 The step of light control method of iris recognition described in any one.
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Application publication date: 20180209 |