CN106295471A - A kind of embedded bio characteristic information acquisition system based on DSP - Google Patents
A kind of embedded bio characteristic information acquisition system based on DSP Download PDFInfo
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- CN106295471A CN106295471A CN201510265839.2A CN201510265839A CN106295471A CN 106295471 A CN106295471 A CN 106295471A CN 201510265839 A CN201510265839 A CN 201510265839A CN 106295471 A CN106295471 A CN 106295471A
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- G—PHYSICS
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- 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
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/166—Detection; Localisation; Normalisation using acquisition arrangements
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- 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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Abstract
The invention discloses a kind of embedded bio characteristic information acquisition system based on DSP, the composition module of this platform includes: power supply, Logic control module, lighting module, image-forming module, motion module, distance-measurement module；Power supply is attached by power supply circuits with lighting module and Logic control module, is used for providing a system to electric energy；Logic control module is connected with each other with distance-measurement module, image-forming module and motion module by interface circuit, is used for controlling corresponding module and carries out corresponding operating；Lighting module is for providing for iris image acquiring light source and the supplementary lighting sources of dark situation；Image-forming module is for face search and man face image acquiring；Motion module is used for driving video camera and control circuit is upper and lower, left-right rotation, makes video camera can be directed at human eye；Distance-measurement module is for measuring the distance between user and video camera；This system can realize collection bicharacteristic to face iris easily.
Description
Technical field
The invention belongs to the concrete application of field of image recognition, particularly relate to a kind of embedded bio characteristic information acquisition system based on DSP.
Background technology
Owing to biological characteristic has " people be respectively arranged with different, the most constant, carry with " three features, therefore compared to traditional identity authentication means such as certificate, key, password, password, identity authentication technology based on living things feature recognition has advantage stable, convenient, that be difficult to forgery.Biometrics identification technology has become the focus of identity authentication, and is applied in the middle of every field.
Face recognition technology is by camera acquisition facial image, face characteristic is extracted by computer, and a kind of technology of authentication is carried out according to these features, compared with other biological feature identification technique, recognition of face more directly, more friendly, user mental maladjustment is little, is that a kind of user's acceptance is high, visualizes biological identification technology the most intuitively.Technically, recognition of face does not has particular/special requirement to image capture device, and product cost is low, and the system integration is convenient.Recognition of face is a kind of technology of relatively early development but owing to different human face structures is the most similar in living things feature recognition, additionally face profile is the most unstable, and face can be because expressing one's feelings, viewing angle, illumination condition, overcover, the impact of the many factors at age can produce great changes.Iris recognition technology is the technology being identified as feature using human eye iris, and iris, as important identity diagnostic characteristics, has stability high, uniqueness and the big feature of non-infringement three.These characteristics based on iris, iris recognition technology is known as the biological identification technology of " the most accurate ", " be most difficult to forge ".But owing to human eye is smaller, the difficulty that Asians's iris texture difficulty under visible light obtains, the shortcoming that iris identification is faced with image acquisition difficulty.
Single biological characteristic itself all has some difficulties that cannot overcome.Such as face, fingerprint recognition characteristic information obtains easily but discrimination is low, and recognition effect is the best；Iris, retina identification discrimination is high, but characteristic information obtains difficulty.The proposition of multi-biological characteristic, can solve the problem that the shortcoming that single biological characteristic self is difficult to overcome is brought, open an important research direction for biometrics identification technology.And multi-biometric feature recognition technology is also the inexorable trend of biometrics identification technology development.This invention is based on conventional iris acquisition technology, the most a series of current study hotspot of combining adaptive iris capturing technology, multi-biometric feature recognition technology, embedded bio identification technology, it is achieved that a kind of acquisition platform automatically gathering face iris image in 0.3 meter to 1.1 meters based on DSP.
Summary of the invention
A kind of embedded bio characteristic information acquisition system based on DSP of this paper design of shortcoming of overcoming it is difficult to for single biological characteristic self.It is an object of the invention to, it is provided that the embedded bio characteristic information acquisition system that the reliability of a kind of simplification is high.
In order to realize said system, the present invention adopts the technical scheme that:
A kind of embedded bio characteristic information acquisition system based on DSP, it is characterised in that this system is made up of power supply, Logic control module, lighting module, image-forming module, motion module, distance-measurement module；Described a kind of based on DSP embedded bio characteristic information acquisition system, first changes to minimum by lens focus by video camera, and now the angle of visual field of camera lens is maximum.Logic control module executor's face detection algorithm, searches for face in field range and exists, after searching face, perform human eye detection algorithm, determine the position of a human eye.The motion module of Logic control module control afterwards rotates and makes video camera be directed at human eye, and after determining that human eye is positioned at screen center, facial image will be stored in the middle of its internal memory, and distance-measurement module is found range, and carries out zoom according to range information control video camera.After video camera zoom completes, Logic control module judges the definition of image, if image is clear not, then controls video camera and carries out secondary focusing until determining that image is clear, gather afterwards and keep iris image.
In this embedded bio characteristic information acquisition system, described power supply is attached by power supply circuits with lighting module and Logic control module, provides electric energy for the functional module for system.Video camera, near-infrared LED light source are that 12V powers, and motion module is that 24V powers, single-chip microcomputer and peripheral hardware thereof, white light LEDs, and DSP development board uses 5V to power.In addition to DSP development board can individually be powered, remainder is corresponding constant voltage source.
In this embedded bio characteristic information acquisition system, described Logic control module includes DSP algorithm processing module and single chip control module；The core processor of DSP algorithm processing module is the TMS320DM642 chip of TI company C64X series, is mainly used in carrying out Face datection, and human eye positions, it is judged that image definition, to single-chip microcomputer transmitting control commands and storage face iris image；Single chip control module selects the Mega128 single-chip microcomputer of Atmel company, under the control of the dsp, it is achieved control video camera zoom and focusing, and motion module rotates, and drives range finder module, controls the function of the light on and off of light source.
In this embedded bio characteristic information acquisition system, described lighting module includes that near-infrared light source is for iris image acquiring light source, white light source is the supplementary lighting sources of dark situation in Face datection, and the peak wavelength of the near-infrared LED that the present invention uses is λ=850nm；Maximum infrared intensity is Ie=200mW/sr；Lighting angle is 30 degree, corresponding steradian Ω=π sr；Pressure reduction is Vsv=1.5V, and design current is a diameter of 5mm of I=100mA, LED.Present invention uses 112 near-infrared LED lamps.When gathering iris image, system can detect the eyes of user distance to light source in real time, and open the LED of respective numbers according to the requirement of above table.Ensuring that lighting source can either provide sufficiently high intensity of illumination, the radiancy at human eye is in safety range all the time simultaneously.When system starts to gather, 4 middle white light LEDs luminescences, it is ensured that face will not be the darkest.
In this embedded bio characteristic information acquisition system, described image-forming module is when short focus, and visual field is relatively big, for face search and man face image acquiring.When long-focus, visual field is less, and image magnification ratio is high, for the collection of iris image.The present invention has selected at the widely used integrated camera in monitoring field.Valid pixel is 752 × 582, imageing sensor is 1/4 " ccd sensor; owing to resolution is higher than 640 × 480; focal range is 3.84 to 88.4mm; zoom lens and imageing sensor are integrated by this video camera; user can be by interface according to the zoom of particular communication protocol realization video camera, and the operation of focusing, all-in-one also can feed back to controller by performing result simultaneously.As long as therefore choosing the integrated camera of suitable types, the collection of face and iris can be realized.
In this embedded bio characteristic information acquisition system, described motion module selects PTS-303Q The Cloud Terrace that video camera and control circuit plate can be driven to carry out up and down, left-right rotation, makes video camera can be directed at human eye.In the present invention, motion module selects permagnetic synchronous motor, has horizontal automatic spacing regulatory function, motion module built-in decoder, and decoder uses import PIC series monolithic to control, and has multi-protocols, many baud rates, strong anti-interference, the feature of low-power consumption.Communication modes uses the RS-485 semi-duplex serial port of strong interference immunity to control.Motion module rotating speed is moderate, horizontal rotating speed 7 degree per second, vertical rotating speed 2 degree per second.
In this embedded bio characteristic information acquisition system, described distance-measurement module is for measuring the distance between user and video camera, and Logic control module can control video camera according to range information and zoom to the focal length collection iris image of suitable multiple.Ultrasonic distance measuring module is module conventional on market, has principle simple, it is only necessary to it is sent pulse signal and can complete range finding；Running voltage is low, only 3.3V-5.5V；Operating distance is 2cm-400cm；Compact, it is easy to integrated advantage, meets the design requirement of the present invention.The range finder module used in native system is HC-SR04 type ultrasonic distance measuring module.It can provide the contactless distance sensing function of 2cm-400cm, and range accuracy is 3mm.It one has four pins, respectively VCC positive source, GND ground wire, TRIG Trig control signal input and ECHO response signal outfan.
In this embedded bio characteristic information acquisition system, the software workflow step of described DSP algorithm processing module is:
Step 1, beginning；
Step 2, entrance principal function；
Step 3, DM642 initialize；
Step 4, read a two field picture；
Step 5, judge whether human eye puts in place, and store facial image, be then execution step 6, otherwise perform step 7；
Step 6, wait zoom complete, and perform step 9 further；
Step 7, carrying out Face datection, next step performs step 8, forwards step 4 after completing to；
Step 8, carry out human eye location；
Step 9, judge image definition and perform step 10, after completing, forwarding step 4 to；
Step 10, storage iris image.
The invention has the beneficial effects as follows:
A kind of embedded bio characteristic information acquisition system based on DSP, it is characterised in that the functional module of this system includes: power supply, Logic control module, lighting module, image-forming module, motion module, distance-measurement module；Described a kind of based on DSP embedded bio characteristic information acquisition system, selects the video camera of band zoom lens for face and the collection of iris image, and when needs gather facial image, system controls video camera and lens focus is changed to minimum；When needs carry out iris image acquiring, system according to the distance controlling video camera of human eye to camera lens by shot change to corresponding focal range, Logic control module includes that DSP algorithm processes plate and singlechip control panel, control for system realizes with algorithm, with the control of peripheral components such to video camera, system also gathers corresponding facial image while gathering qualified iris image.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further explained.
Fig. 1 is embedded bio characteristic information acquisition system overall framework figure；
Fig. 2 is LED light source scattergram
Fig. 3 is white light LEDs control circuit figure；
Fig. 4 is near-infrared LED lamp control circuit figure；
Fig. 5 is SP3485 control circuit schematic diagram；
Fig. 6 is dsp software workflow diagram.
Detailed description of the invention
The detailed description of the invention of the present invention is: described a kind of based on DSP embedded bio characteristic information acquisition system, first lens focus is changed to minimum by video camera, and now the angle of visual field of camera lens is maximum.Logic control module executor's face detection algorithm, searches for face in field range and exists, after searching face, perform human eye detection algorithm, determine the position of a human eye.The motion module of Logic control module control afterwards rotates and makes video camera be directed at human eye, and after determining that human eye is positioned at screen center, facial image will be stored in the middle of its internal memory, and distance-measurement module is found range, and carries out zoom according to range information control video camera.After video camera zoom completes, Logic control module judges the definition of image, if image is clear not, then controls video camera and carries out secondary focusing until determining that image is clear, gather afterwards and keep iris image.
Fig. 1 is embedded bio characteristic information acquisition system overall framework figure, and wherein the composition module of this platform includes: power supply, Logic control module, lighting module, image-forming module, motion module, distance-measurement module；Wherein power supply is attached by power supply circuits with lighting module and Logic control module, is used for providing a system to electric energy；Logic control module is connected with each other with distance-measurement module, image-forming module and motion module by interface circuit, is used for controlling corresponding module and carries out corresponding operating；Lighting module is for providing for iris image acquiring light source and the supplementary lighting sources of dark situation；Image-forming module is for face search and man face image acquiring；Motion module is used for driving video camera and control circuit is upper and lower, left-right rotation, makes video camera can be directed at human eye；Distance-measurement module is for measuring the distance between user and video camera；This system can realize collection bicharacteristic to face iris easily.
Fig. 2 is LED light source scattergram, and when starting iris image acquiring, white light LEDs is closed, and near-infrared LED is opened.Near-infrared LED packet is opened, if user distance is closer, the most only opens the near-infrared LED lamp near camera lens；If contrary user distance is distant, open the LED of respective numbers the most as requested.The lamp opened is all that left and right is opened in pairs, so can ensure that light source uniformity of illumination at human eye.Treating that iris image acquiring is complete, near-infrared LED is closed.
Fig. 3 is white light LEDs control circuit figure, and LED uses 3.3V to power, and R is current-limiting resistance.LED negative pole is directly connected with single-chip processor i/o pin.When the respective pin of single-chip microcomputer is high level, LED is closed；When pin is low level, LED is opened.
Fig. 4 is near-infrared LED lamp control circuit figure, and circuit uses 12V power supply to power, and R70, R71, R76 are current-limiting resistance.Due to relatively big by the current ratio of resistance, exceed the peak power of Chip-R, so using three sheet resistances in parallel as current-limiting resistance.7 LED lamp are connected in series.The negative pole of LED is connected with the drain electrode of metal-oxide-semiconductor.In figure, metal-oxide-semiconductor is SI2302, and it is N-channel field effect transistor.The grid of metal-oxide-semiconductor is connected with single-chip microcomputer pin after an indication LED, and source electrode is connected to the ground.When single-chip microcomputer pin is high, MOS tube grid is high level, and metal-oxide-semiconductor turns on, and near-infrared LED negative pole and ground conducting, LED is luminous；When single-chip microcomputer pin is low, metal-oxide-semiconductor grid is low level, and metal-oxide-semiconductor ends, and near-infrared LED negative pole is unsettled, and LED is the most luminous.Resistance between metal-oxide-semiconductor grid and source electrode is pull down resistor, it is ensured that metal-oxide-semiconductor can effectively end.And if when using the mode of PWM pulsewidth modulation ceaselessly to carry out just changing, then can control LED is in half luminance, thus playing the effect controlling light intensity.
Fig. 5 is SP3485 control circuit schematic diagram, and motion module needs to use RS485 serial interface standard to be controlled, and it is a kind of half-duplex, and the communication modes that difference controls has capacity of resisting disturbance strong, the feature that transfer rate is big.SP3485 is low in energy consumption, controls simple, is a kind of low-power consumption half-duplex RS 485 transceiver, and TTL serial ports can be converted to the output of RS485 serial ports by it.
Fig. 6 is DSP software workflow figure, and the software workflow of described DSP algorithm processing module is as follows:
Step 1, beginning；
Step 2, entrance principal function；
Step 3, DM642 initialize；
Step 4, read a two field picture；
Step 5, judge whether human eye puts in place, and store facial image, be then execution step 6, otherwise perform step 7；
Step 6, wait zoom complete, and perform step 9 further；
Step 7, carrying out Face datection, next step performs step 8, forwards step 4 after completing to；
Step 8, carry out human eye location；
Step 9, judge image definition and perform step 10, after completing, forwarding step 4 to；
Step 10, storage iris image.
General technical staff of the technical field of the invention also will readily appreciate that in addition to the foregoing, and at this, the specific embodiment of explanation and diagram can change combination further.Although the present invention gives diagram explanation with regard to its preferred embodiment, but person skilled in the art it is recognized that in the spirit and scope of the present invention limited in the attached claims, also can make multiple change and variation to the present invention.
Claims (4)
1. an embedded bio characteristic information acquisition system based on DSP, it is characterised in that this system is made up of power supply, Logic control module, lighting module, image-forming module, motion module, distance-measurement module；Lens focus is first changed to minimum by video camera by system, then Logic control module executor face detection algorithm, in field range, search for face exist, after searching face, perform human eye detection algorithm, determine the position of a human eye, the motion module of Logic control module control afterwards rotates and makes video camera be directed at human eye, facial image will be stored in the middle of its internal memory, distance-measurement module is found range, and carry out zoom according to range information control video camera, after video camera zoom completes, Logic control module judges the definition of image, control whether video camera carries out secondary focusing, until determining that image is clear, finally gather and keep iris image；Within the system, described power supply is attached by power supply circuits with lighting module and Logic control module, provides electric energy for the functional module for system；Described Logic control module is connected with motion module by RS485 serial line interface, is attached with distance-measurement module by I/O port, while be connected with each other with image-forming module and by interface circuit.
2. embedded bio characteristic information acquisition system as claimed in claim 1, it is characterized in that, described power supply uses boost chip LM2577-ADJ of LDC blood pressure lowering chip HT7150 and TI company for regulating the input and output voltage of circuit, described power supply is attached by power supply circuits with lighting module and Logic control module, provides electric energy for the functional module for system；Described lighting module uses 16 groups of near-infrared light sources and 4 groups of white light sources, all uses I/O mouth to be controlled, is used separately as the supplementary lighting sources of dark situation in iris image acquiring light source and Face datection；The Samsung SCM2231 all-in-one that described image-forming module selects, when short focus, visual field is relatively big, for face search and man face image acquiring；When long-focus, visual field is less, and image magnification ratio is high, for the collection of iris image；Described motion module selects PTS-303Q The Cloud Terrace that video camera and control circuit plate can be driven to carry out up and down, left-right rotation, makes video camera can be directed at human eye；Described distance-measurement module uses HC-SR04 type ultrasonic distance measuring module for measuring the distance between user and video camera, and Logic control module can control video camera according to range information and zoom to the focal length collection iris image of suitable multiple.
3. embedded bio characteristic information acquisition system as claimed in claim 1, it is characterised in that described Logic control module includes DSP algorithm processing module and single chip control module；The core processor of DSP algorithm processing module is the TMS320DM642 chip of TI company C64X series, is mainly used in carrying out Face datection, and human eye positions, it is judged that image definition, to single-chip microcomputer transmitting control commands and storage face iris image；Single chip control module selects the Mega128 single-chip microcomputer of Atmel company, under the control of the dsp, it is achieved control video camera zoom and focusing, and motion module rotates, and drives range finder module, controls the function of the light on and off of light source.
4. DSP algorithm processing module as claimed in claim 3, it is characterised in that the software workflow of described DSP algorithm processing module is as follows:
Step 1, beginning；
Step 2, entrance principal function；
Step 3, DM642 initialize；
Step 4, read a two field picture；
Step 5, judge whether human eye puts in place, and store facial image, be then execution step 6, otherwise perform step 7；
Step 6, wait zoom complete, and perform step 9 further；
Step 7, carrying out Face datection, next step performs step 8, forwards step 4 after completing to；
Step 8, carry out human eye location；
Step 9, judge image definition and perform step 10, after completing, forwarding step 4 to；
Step 10, storage iris image.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107358667A (en) * | 2017-05-23 | 2017-11-17 | 合肥众耀信息科技有限公司 | A kind of Work attendance management system for meeting signature |
| CN107463880A (en) * | 2017-07-07 | 2017-12-12 | 广东欧珀移动通信有限公司 | Control method, electronic device and computer readable storage medium |
| CN107480664A (en) * | 2017-07-31 | 2017-12-15 | 广东欧珀移动通信有限公司 | Light supplement control method and device and terminal equipment |
| CN107480498A (en) * | 2017-07-31 | 2017-12-15 | 广东欧珀移动通信有限公司 | Unlocking processing method and Related product |
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| CN109446930A (en) * | 2018-10-11 | 2019-03-08 | 上海宇钛信息科技有限公司 | A kind of Controlling dogs system and canine iris identification equipment based on iris recognition |
| CN109501724A (en) * | 2017-09-15 | 2019-03-22 | 南京志超汽车零部件有限公司 | While a kind of VATS Vehicle Anti-Theft System based on face recognition and iris recognition |
| CN110731756A (en) * | 2019-10-11 | 2020-01-31 | 广州创弘医疗科技有限公司 | kinds of image acquisition device |
| WO2021098135A1 (en) * | 2019-11-21 | 2021-05-27 | 苏州思源科安信息技术有限公司 | Long-distance large field of view iris optical imaging device and method |
| CN113614772A (en) * | 2019-02-18 | 2021-11-05 | 日本电气株式会社 | Lighting control apparatus, method, system, and computer-readable medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2777846Y (en) * | 2005-02-05 | 2006-05-03 | 厦门大学 | Temp difference power supply |
| CN101520838A (en) * | 2008-02-27 | 2009-09-02 | 中国科学院自动化研究所 | Automatic-tracking and automatic-zooming method for acquiring iris images |
| CN101814130A (en) * | 2009-02-19 | 2010-08-25 | 中国科学院自动化研究所 | Iris identification device by using camera array and multimodal biometrics identification method |
| CN102252766A (en) * | 2011-04-19 | 2011-11-23 | 北京航空航天大学 | Switch cabinet contact wireless temperature measurement device with suspension self power supply function |
| CN103149431A (en) * | 2013-03-19 | 2013-06-12 | 青岛乾程电子科技有限公司 | Multifunction watt-hour meter |
| CN103647333A (en) * | 2013-12-30 | 2014-03-19 | 黑龙江大学 | Small-sized visual photovoltaic intelligent power supply device and charging method |
| CN203851239U (en) * | 2014-04-30 | 2014-09-24 | 长春工程学院 | Dual-camera video image tracking device |
| CN204101411U (en) * | 2014-10-01 | 2015-01-14 | 西安科技大学 | A kind of down-hole coal dust image detection device |
-
2015
- 2015-05-24 CN CN201510265839.2A patent/CN106295471A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2777846Y (en) * | 2005-02-05 | 2006-05-03 | 厦门大学 | Temp difference power supply |
| CN101520838A (en) * | 2008-02-27 | 2009-09-02 | 中国科学院自动化研究所 | Automatic-tracking and automatic-zooming method for acquiring iris images |
| CN101814130A (en) * | 2009-02-19 | 2010-08-25 | 中国科学院自动化研究所 | Iris identification device by using camera array and multimodal biometrics identification method |
| CN102252766A (en) * | 2011-04-19 | 2011-11-23 | 北京航空航天大学 | Switch cabinet contact wireless temperature measurement device with suspension self power supply function |
| CN103149431A (en) * | 2013-03-19 | 2013-06-12 | 青岛乾程电子科技有限公司 | Multifunction watt-hour meter |
| CN103647333A (en) * | 2013-12-30 | 2014-03-19 | 黑龙江大学 | Small-sized visual photovoltaic intelligent power supply device and charging method |
| CN203851239U (en) * | 2014-04-30 | 2014-09-24 | 长春工程学院 | Dual-camera video image tracking device |
| CN204101411U (en) * | 2014-10-01 | 2015-01-14 | 西安科技大学 | A kind of down-hole coal dust image detection device |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107358667A (en) * | 2017-05-23 | 2017-11-17 | 合肥众耀信息科技有限公司 | A kind of Work attendance management system for meeting signature |
| CN107463880A (en) * | 2017-07-07 | 2017-12-12 | 广东欧珀移动通信有限公司 | Control method, electronic device and computer readable storage medium |
| US11176354B2 (en) | 2017-07-07 | 2021-11-16 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Control method, electronic device and computer-readable storage medium |
| CN107491672A (en) * | 2017-07-18 | 2017-12-19 | 广东欧珀移动通信有限公司 | Unlocking processing method and Related product |
| WO2019015433A1 (en) * | 2017-07-18 | 2019-01-24 | Oppo广东移动通信有限公司 | Unlocking processing method and related product |
| CN107491672B (en) * | 2017-07-18 | 2021-01-22 | Oppo广东移动通信有限公司 | Unlock processing methods and related products |
| CN107480498B (en) * | 2017-07-31 | 2020-02-14 | Oppo广东移动通信有限公司 | Unlocking processing method and related product |
| CN107480664A (en) * | 2017-07-31 | 2017-12-15 | 广东欧珀移动通信有限公司 | Light supplement control method and device and terminal equipment |
| CN107480498A (en) * | 2017-07-31 | 2017-12-15 | 广东欧珀移动通信有限公司 | Unlocking processing method and Related product |
| WO2019024710A1 (en) * | 2017-07-31 | 2019-02-07 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Terminal device, iris recognition apparatus and iris recognition method |
| CN109501724A (en) * | 2017-09-15 | 2019-03-22 | 南京志超汽车零部件有限公司 | While a kind of VATS Vehicle Anti-Theft System based on face recognition and iris recognition |
| CN109446930A (en) * | 2018-10-11 | 2019-03-08 | 上海宇钛信息科技有限公司 | A kind of Controlling dogs system and canine iris identification equipment based on iris recognition |
| CN113614772A (en) * | 2019-02-18 | 2021-11-05 | 日本电气株式会社 | Lighting control apparatus, method, system, and computer-readable medium |
| US12231778B2 (en) | 2019-02-18 | 2025-02-18 | Nec Corporation | Illumination control apparatus, method, system, and computer readable medium |
| CN110731756A (en) * | 2019-10-11 | 2020-01-31 | 广州创弘医疗科技有限公司 | kinds of image acquisition device |
| WO2021098135A1 (en) * | 2019-11-21 | 2021-05-27 | 苏州思源科安信息技术有限公司 | Long-distance large field of view iris optical imaging device and method |
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