WO2022231168A1 - Procédé et dispositif de reconnaissance faciale par inversion de couleurs sur un écran - Google Patents

Procédé et dispositif de reconnaissance faciale par inversion de couleurs sur un écran Download PDF

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Publication number
WO2022231168A1
WO2022231168A1 PCT/KR2022/005175 KR2022005175W WO2022231168A1 WO 2022231168 A1 WO2022231168 A1 WO 2022231168A1 KR 2022005175 W KR2022005175 W KR 2022005175W WO 2022231168 A1 WO2022231168 A1 WO 2022231168A1
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WIPO (PCT)
Prior art keywords
screen
electronic device
value
color data
display
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PCT/KR2022/005175
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English (en)
Korean (ko)
Inventor
김지연
김진태
박서영
성종수
Original Assignee
삼성전자 주식회사
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Publication of WO2022231168A1 publication Critical patent/WO2022231168A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/45—Structures or tools for the administration of authentication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/82—Protecting input, output or interconnection devices
    • G06F21/84—Protecting input, output or interconnection devices output devices, e.g. displays or monitors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/60—Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
    • 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
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0686—Adjustment of display parameters with two or more screen areas displaying information with different brightness or colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light

Definitions

  • Various embodiments disclosed in this document relate to a method and apparatus for recognizing a face through color inversion of a screen.
  • mobile electronic devices provide various functions, such as photographing or video recording, and Internet communication, in addition to a phone function, and thus have close usability in real life. Accordingly, the mobile electronic device includes a lot of personal information, and the importance of security for the personal information included in the mobile electronic device is increasing.
  • biometric functions are being applied for better personal information security.
  • biometric recognition includes functions such as fingerprint recognition, iris recognition, and face recognition.
  • Traditional facial recognition technology can be achieved by identifying a user's face through a digital image and comparing landmark or characteristic information obtained from the facial image with information stored in a database. For example, the relative position, size or shape of the eyes, nose, cheekbones and jaw can be analyzed.
  • An example of another algorithm of facial recognition technology is a method of compressing facial data from a normalized facial image gallery and storing it in an image, and comparing the probe image with the facial data.
  • face recognition algorithms include principal component analysis algorithm using eigenfaces, linear discriminant analysis algorithm, elastic bundle graph matching using Fisherface algorithm, hidden Markov model, multiple linear subspace learning using tensor representation, and neural synchronization. There is dynamic link matching.
  • the electronic device may obtain face information of the user.
  • the electronic device may be in a low-illumination environment in which a sufficient amount of light does not exist around the electronic device, there may be a limit in obtaining facial information of a user of the electronic device.
  • the insufficient amount of light could be secured through a method of brightly adjusting the brightness of a display included in the electronic device.
  • various embodiments disclosed in this document disclose an apparatus and method for an electronic device to which a lock screen having a low brightness is set to effectively acquire facial information of a user in a low-illuminance environment.
  • An electronic device includes a display, a sensor for performing facial recognition, and at least one processor electrically connected to the display and the sensor, wherein the at least one processor includes the electronic device displays a first screen having first color data on the display in a lock state of When the value is less than the set value, a second screen having the second color data in which the first color data is changed is displayed on the display, and the user's face is recognized using the sensor while the second screen is displayed, and the The lock state may be released based on a result of facial recognition.
  • the method of operating an electronic device includes displaying a first screen having first color data on a display of the electronic device in a locked state of the electronic device, and unlocking the electronic device.
  • An operation of detecting an event an operation of displaying a second screen having the second color data in which the first color data is changed when the brightness value of the first screen is less than a preset value in response to the detection of the lock release event , while the second screen is displayed, performing face recognition of the user using a sensor of the electronic device, and releasing the lock state based on a result of face recognition.
  • a non-transitory recording medium storing computer readable instructions according to an embodiment of the present disclosure
  • the instructions when executed by at least one processor of the electronic device, the In a locked state, displaying a first screen having first color data on the display of the electronic device, detecting an unlocking event of the electronic device, and detecting the unlocking event,
  • the brightness value is less than a preset value
  • displaying a second screen having the second color data in which the first color data is changed while the second screen is displayed, using a sensor of the electronic device
  • An operation of performing recognition and an operation of releasing the lock state may be performed based on a result of performing the face recognition.
  • the electronic device provides an effect of increasing the success rate of a user's face recognition through the electronic device in a low-light environment.
  • the electronic device provides an effect of increasing the success rate of a user's face recognition through the electronic device when a lock screen having a low brightness is set.
  • the electronic device provides a face recognition function using a pre-calculated brightness value of the lock screen, thereby reducing the time required for unlocking the lock due to the failure of the face recognition.
  • FIG. 1 is a block diagram of an electronic device 101 in a network environment 100 according to an embodiment of the present disclosure.
  • FIG. 2 illustrates a functional configuration 200 of an electronic device according to an embodiment.
  • FIG. 3 illustrates an example of a face recognition operation of an electronic device according to an embodiment.
  • FIG. 4 illustrates an example of a screen displayed on a display in an unlock operation through face recognition of an electronic device according to an exemplary embodiment.
  • FIG. 5 illustrates an example of a method for an electronic device to acquire brightness of a screen displayed on a display, according to an embodiment.
  • FIG 6 illustrates an operation flow of an electronic device according to an embodiment.
  • FIG. 7 illustrates an operation flow of an electronic device according to an illuminance value for a surrounding environment of the electronic device according to an exemplary embodiment.
  • FIG. 8 illustrates an example of an operation of displaying a screen after unlocking the lock state of the electronic device according to an embodiment.
  • FIG. 1 is a block diagram of an electronic device 101 in a network environment 100 according to an embodiment of the present disclosure.
  • an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with at least one of the electronic device 104 and the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 .
  • a first network 198 eg, a short-range wireless communication network
  • a second network 199 e.g., a second network 199
  • the electronic device 101 may communicate with the electronic device 104 through the server 108 .
  • the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 .
  • at least one of these components eg, the connection terminal 178
  • some of these components are integrated into one component (eg, display module 160 ). can be
  • the processor 120 for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in , process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
  • software eg, a program 140
  • the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 .
  • the volatile memory 132 may be stored in , process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
  • the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor).
  • the main processor 121 eg, a central processing unit or an application processor
  • a secondary processor 123 eg, a graphic processing unit, a neural network processing unit (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor.
  • the main processor 121 e.g, a central processing unit or an application processor
  • a secondary processor 123 eg, a graphic processing unit, a neural network processing unit (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a
  • the secondary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states.
  • the coprocessor 123 eg, an image signal processor or a communication processor
  • may be implemented as part of another functionally related component eg, the camera module 180 or the communication module 190 ). have.
  • the auxiliary processor 123 may include a hardware structure specialized for processing an artificial intelligence model.
  • Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which the artificial intelligence model is performed, or may be performed through a separate server (eg, the server 108).
  • the learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example does not
  • the artificial intelligence model may include a plurality of artificial neural network layers.
  • Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example.
  • the artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.
  • the memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176 ) of the electronic device 101 .
  • the data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto.
  • the memory 130 may include a volatile memory 132 or a non-volatile memory 134 .
  • the program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .
  • the input module 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 .
  • the input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).
  • the sound output module 155 may output a sound signal to the outside of the electronic device 101 .
  • the sound output module 155 may include, for example, a speaker or a receiver.
  • the speaker can be used for general purposes such as multimedia playback or recording playback.
  • the receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.
  • the display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 .
  • the display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device.
  • the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.
  • the audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 .
  • the electronic device 102) eg, a speaker or headphones
  • the electronic device 102 may output a sound.
  • the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do.
  • the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.
  • the interface 177 may support one or more specified protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ).
  • the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.
  • the connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ).
  • the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).
  • the haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense.
  • the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 188 may manage power supplied to the electronic device 101 .
  • the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
  • PMIC power management integrated circuit
  • the battery 189 may supply power to at least one component of the electronic device 101 .
  • battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
  • the communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel.
  • the communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication.
  • the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module).
  • a wireless communication module 192 eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module
  • GNSS global navigation satellite system
  • wired communication module 194 eg, : It may include a local area network (LAN) communication module, or a power line communication module.
  • a corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
  • a first network 198 eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)
  • a second network 199 eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
  • a telecommunication network
  • the wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 .
  • subscriber information eg, International Mobile Subscriber Identifier (IMSI)
  • IMSI International Mobile Subscriber Identifier
  • the electronic device 101 may be identified or authenticated.
  • the wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR).
  • NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)).
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communications
  • URLLC ultra-reliable and low-latency
  • the wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example.
  • a high frequency band eg, mmWave band
  • the wireless communication module 192 uses various techniques for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna.
  • the wireless communication module 192 may support various requirements defined in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ).
  • the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: Downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) can be supported.
  • a peak data rate eg, 20 Gbps or more
  • loss coverage eg, 164 dB or less
  • U-plane latency for realizing URLLC
  • the antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device).
  • the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern.
  • the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna.
  • other components eg, a radio frequency integrated circuit (RFIC)
  • RFIC radio frequency integrated circuit
  • the antenna module 197 may form a mmWave antenna module.
  • the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.
  • peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • GPIO general purpose input and output
  • SPI serial peripheral interface
  • MIPI mobile industry processor interface
  • the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 .
  • Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 .
  • all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 .
  • the electronic device 101 may perform the function or service itself instead of executing the function or service itself.
  • one or more external electronic devices may be requested to perform at least a part of the function or the service.
  • One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 .
  • the electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request.
  • cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used.
  • the electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing.
  • the external electronic device 104 may include an Internet of things (IoT) device.
  • the server 108 may be an intelligent server using machine learning and/or neural networks.
  • the external electronic device 104 or the server 108 may be included in the second network 199 .
  • the electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.
  • FIG. 2 illustrates a functional configuration of an electronic device 200 according to an embodiment. Contents described as being performed by the processor 210 of FIG. 2 may be understood as being implemented by the processor 120 of FIG. 1 . In another embodiment, the processor 210 of FIG. 2 may include a separate chip (eg, a display driver IC) that is distinct from the processor 120 of FIG. 1 . In the description of FIG. 2 , the configuration and/or function described in FIG. 1 may be briefly described or the description may be omitted.
  • a separate chip eg, a display driver IC
  • the processor 210 includes a display 220 (eg, a liquid crystal display (LCD), a light emitting diode (LED), an organic light emitting diode (OLED)), a sensor 230 and an illuminance sensor 240 .
  • a display 220 eg, a liquid crystal display (LCD), a light emitting diode (LED), an organic light emitting diode (OLED)
  • LED light emitting diode
  • OLED organic light emitting diode
  • the processor 210 may determine whether the user's face information received through the sensor 230 corresponds to the user's face information previously stored in the electronic device 200 .
  • the processor 210 may perform a lock release function based on the determination result. For example, when the facial information of the user received through the sensor 230 matches the previously stored facial information, the lock state of the electronic device 200 may be released. For example, when the facial information of the user received through the sensor 230 does not match the previously stored facial information, the locked state of the electronic device 200 may be maintained.
  • the processor 210 may acquire color data (eg, brightness, luminance, and saturation) of a lock screen displayed on the display 220 .
  • the processor 210 may obtain a brightness value of a lock screen displayed on the display 220 .
  • the processor 210 may obtain an average value of color data values of pixels included in the lock screen.
  • the processor 210 may obtain a color data value of a designated area in the lock screen.
  • the processor 210 may obtain information related to color data (eg, brightness, saturation, and luminance) of an image file displayed on the display 220 .
  • the processor 210 may obtain a brightness value of an image file displayed on the display 220 displayed on the display 220 .
  • the processor 210 may obtain an average value of color data values of pixels constituting an image of an image file displayed on the display 220 .
  • the processor 210 may obtain a color data value of a designated area among the areas displayed on the display 220 .
  • the processor 210 may acquire display setting information related to an output of a screen displayed on the display 220 .
  • the processor 210 may obtain a color output state or output setting information of a screen displayed on the display 220 .
  • the processor 210 may adjust a color (eg, brightness, saturation, and luminance) of a screen displayed on the display 220 .
  • the processor 210 may unlock the electronic device 200 by performing face recognition of the user of the electronic device through the sensor 230 .
  • the sensor 230 may be at least one of a camera and a depth sensor.
  • the processor 210 compares an image including a user's face acquired through a camera (eg, a front camera) with an existing registered image, and when the similarity between the two images is equal to or greater than a certain value, the electronic device ( 200) can be unlocked.
  • the processor 210 compares the scan data obtained by scanning the curved surface of the user's face through the sensor 230 with the previously registered scan data, so that the similarity between the two scan data is determined. When it is equal to or greater than a predetermined value, the electronic device 200 may be unlocked.
  • the processor 210 may acquire an illuminance value around the electronic device 200 through the illuminance sensor 240 .
  • the processor 210 may measure the brightness around the electronic device 200 through the illuminance sensor 240 to obtain an illuminance value (eg, a lux value), and then adjust the brightness of the screen accordingly.
  • an illuminance value eg, a lux value
  • FIG. 3 illustrates an example of a face recognition operation of an electronic device according to an embodiment.
  • the user 302 performs facial recognition to unlock the electronic device 301 in the environment 300 including the light source 304 is illustrated.
  • the electronic device 301 illustrated in FIG. 3 may include the electronic device 101 of FIG. 1 and the electronic device 200 of FIG. 2 .
  • the electronic device 301 may include a sensor 306 (eg, a camera, a depth sensor), an illuminance sensor 308 , and a display 310 .
  • the sensor 306 shown in FIG. 3 may include the sensor 230 of FIG. 2 .
  • the display 310 shown in FIG. 3 may include the display 220 of FIG. 2 .
  • the illuminance sensor 308 illustrated in FIG. 3 may include the illuminance sensor 240 of FIG. 2 .
  • the electronic device 301 uses face information of the user 302 (eg, a face image of the user obtained through a camera, a depth sensor) to perform face recognition of the user 302 . acquired user's face scan data) and may be compared with previously registered data.
  • face information of the user 302 eg, a face image of the user obtained through a camera, a depth sensor
  • acquired user's face scan data may be compared with previously registered data.
  • the electronic device 301 may obtain facial information of the user 302 .
  • the electronic device 301 displays the facial information of the user 302 .
  • the electronic device 301 detects that the brightness of the light source 304 is insufficient in a low-illumination environment, the screen displayed on the display 310 is used as a light source to perform face recognition of the user 302 .
  • the display 310 may adjust the brightness. For example, when the illuminance value around the electronic device 301 obtained through the illuminance sensor 308 is equal to or less than the threshold value, the electronic device 301 may display the brightness of the screen displayed on the display 310 . can increase
  • the lock screen may mean a background screen displayed on the display 220 when the user attempts to unlock the electronic device 200 .
  • the lock screen before the color inversion may be referred to as the first screen 410
  • the lock screen after the color inversion may be referred to as the second screen 420 .
  • a property eg, brightness
  • luminance e.g., luminance
  • the brightness value of the lock screen set by the user is low (eg, when the image is predominantly black)
  • the amount of light required to obtain the user's facial information Since it is difficult to secure the amount, it may be difficult to increase the success rate of facial recognition.
  • the electronic device 200 may display the first screen 410 that is a lock screen set by the user on the display 220 .
  • a first image may be displayed on the first screen 410 .
  • the first image may include an image set by the user to be displayed on the lock screen.
  • the electronic device 200 determines that the brightness of the first screen 410 (eg, the brightness of the lock image displayed on the first screen 410) is low, the electronic device 200 displays the color of the first screen 410
  • a second screen 420 obtained by inverting eg, inverting black to white
  • a second image in which the color of the first image is inverted may be displayed on the second screen 420 .
  • the second screen 420 is a screen in which the color of the first screen 410 is inverted and has high brightness, so that when the second screen 420 is displayed on the display 220, the success rate of face recognition can be increased.
  • the electronic device 200 may perform face recognition of the user, and when the face recognition is successful, the electronic device 200 may release the lock. After unlocking, the electronic device 200 may display a home screen 430 (a screen displayed on the display 220 after the lock is released) on the display 220 .
  • the home screen 430 may include at least one object for performing a function provided by the electronic device 200 (eg, a phone call, a text message, a camera, an album), time information, weather information, and remaining battery level information. .
  • FIG. 5 illustrates an example of a method for an electronic device to acquire brightness of a screen displayed on a display, according to an embodiment.
  • RGB red, green, blue
  • the RGB value may include an R (red) value, a G (green) value, and a B (blue) value.
  • the R value may be a value indicating the degree of red included in the color
  • the G value may be a value indicating the degree of green included in the color
  • the B value may be a value indicating the degree of blue included in the color .
  • a color of a pixel constituting an image displayed on the display 220 may be indicated through an RGB value that is a combination of an R value, a G value, and a B value.
  • the R value, the G value, and the B value may each have a value between 0 and 255.
  • an x-axis may indicate an R value
  • a y-axis may indicate a G value
  • a z-axis may indicate a B value.
  • the first color 501 included in the first pixel may be expressed as the first RGB value 503 (eg, 52, 57, and 250).
  • the electronic device 200 may obtain a brightness value of a screen displayed on the display 220 .
  • the brightness value of the screen displayed on the display 220 may be calculated based on the brightness values of pixels included in the screen displayed on the display 220 .
  • the brightness value of a screen displayed on the display 220 may mean an average value of brightness values of pixels constituting an image displayed on the display 220 .
  • the brightness value of the screen displayed on the display 220 may mean an average value of the brightness values of pixels constituting a partial area (eg, the central area of the screen) of the image displayed on the display 220 .
  • the brightness value of the screen displayed on the display 220 is calculated based on the display setting information of the display 220 obtained by the processor 210 (eg, color output state or output setting information of the screen). can be
  • the brightness value u of the pixel constituting the image displayed on the display 220 may be obtained based on the RGB value of the pixel.
  • the brightness value u of a pixel constituting an image displayed on the display 220 may be determined as an average value of the R value, G value, and B value of the pixel.
  • the first screen is a screen displayed on the display 220 in the locked state of the electronic device 200 , and a first image may be displayed on the first screen. It may mean a screen set by a user, and the second screen is a screen in which the color of the first screen is inverted, and a second image in which the color of the first image is inverted may be displayed.
  • the electronic device 200 may display the first screen having the first color data on the display 220 in the locked state of the electronic device 200 .
  • the first screen may mean a lock screen displayed on the display 220 when the electronic device 200 is in a locked state.
  • the first color data may include data regarding colors of pixels constituting the first image displayed on the first screen.
  • the first color data may include RGB values of pixels constituting an image displayed on the first screen.
  • the electronic device 200 may detect an unlock event of the electronic device 200 .
  • the unlock event may mean a case in which a user's intention to unlock the electronic device 200 is identified.
  • the unlock event may include a case of identifying a user's input for unlocking the electronic device 200 .
  • the user's input for releasing the lock state may include at least one of a tap, a double tap, and a swipe.
  • the first color data in response to the detection of the unlock event, when the brightness value of the first screen is less than a preset value, the first color data has the changed second color data.
  • a second screen may be displayed.
  • the second color data may mean color data in which the first color data is inverted.
  • the brightness value of the first screen may be obtained based on brightness values of pixels constituting an image displayed on the first screen.
  • the brightness value of the first screen may mean an average value of the brightness values of pixels constituting the image displayed on the first screen.
  • the brightness value of the pixel constituting the image displayed on the first screen may include an average value of the R value, the G value, and the B value of the pixel.
  • the RGB value of a specific pixel constituting the image displayed on the first screen is (10, 20, 30)
  • the brightness value of the specific pixel is 20 ((10+20+30)/3)
  • the image displayed on the second screen may have the same properties as the image displayed on the first screen except for a color.
  • the image displayed on the first screen and the image displayed on the second screen may include the same size, the same object, and the same component.
  • the second color data may include data regarding RGB values of each of the pixels constituting the image displayed on the second screen.
  • the second color data may mean an average value of RGB values of each of the pixels constituting the image displayed on the second screen.
  • the second RGB value of the pixel constituting the image displayed on the second screen inverts the first RGB value of the pixel constituting the image displayed on the first screen (eg, black is inverted) If possible, it can be obtained by making it white.
  • the second RGB value in which the first RGB value is inverted may be obtained by subtracting the first RGB value from 256.
  • the inverted RGB value may have (256-a, 256-b, 256-c) .
  • a, b, and c may be values between 0 and 255.
  • the electronic device 200 may perform face recognition of the user using the sensor 230 while the second screen is displayed.
  • the senor 230 may include at least one of a camera and a depth sensor.
  • the electronic device 200 may perform face recognition by comparing the user's face information acquired through the sensor 230 with the previously registered face information of the user. For example, when the face image of the user acquired through the camera matches the face image of the previously registered user, the electronic device 200 may determine that face recognition has been successful. Also, for example, the electronic device 200 compares the user's face scan data acquired through the depth sensor with the user's face scan data previously registered in the electronic device 200, and does not match. In this case, it may be determined that the facial recognition has failed. According to another embodiment, the electronic device 200 may perform face recognition by combining a face image acquired through a camera and face scan data acquired through a depth sensor.
  • the electronic device 200 may release the lock state of the electronic device 200 based on a result of facial recognition. For example, when the electronic device 200 determines that the facial recognition has been successfully performed, the electronic device 200 may be unlocked and a home screen may be displayed. Also, for example, when the electronic device 200 determines that the facial recognition has failed, the lock state of the electronic device 200 may be maintained.
  • the display of the second screen is stopped and the first screen is displayed on the display 220 in order to restore the changed color to its original state. can be displayed
  • FIG. 7 illustrates an operation flow of an electronic device according to an illuminance value around the electronic device, according to an exemplary embodiment.
  • the electronic device 200 may acquire a brightness value of the first screen.
  • the first screen may mean a lock screen displayed on the lock screen when the electronic device 200 is in a lock state.
  • the electronic device 200 may acquire the brightness value of the first screen when the user sets the first screen as the lock screen. For example, the electronic device 200 selects an image to be displayed on the lock screen or sets the selected image as the lock screen in response to receiving a user input through the user interface for selecting the lock screen by the user. It is possible to calculate the brightness value of
  • the brightness value of the first screen may be obtained based on brightness values of pixels constituting an image displayed on the first screen, and the brightness values of each pixel may be determined based on the RGB values of each pixel.
  • the electronic device 200 may display the first screen having the first color data on the display 220 in the locked state of the electronic device 200 .
  • the first color data may refer to data regarding RGB values of pixels constituting an image displayed on the first screen.
  • the electronic device 200 may detect an unlock event of the electronic device 200 .
  • the unlock event may include a user input (eg, tap, drag, touch, swipe) for unlocking the electronic device 200 .
  • the electronic device 200 may obtain an illuminance value around the electronic device 200 through the illuminance sensor 240 .
  • the illuminance sensor 240 may refer to a sensor for adjusting the brightness of the display 220 of the electronic device 200 by measuring an illuminance value around the electronic device 200 .
  • the electronic device 200 may determine whether an illuminance value around the electronic device 200 is less than a threshold value. When it is determined that the illuminance value around the electronic device 200 is less than the threshold value, the electronic device 200 determines that the electronic device 200 is in a low illuminance environment and changes the color of the screen displayed on the display 220 action can be performed for
  • the electronic device 200 when the electronic device 200 determines that the illuminance value around the electronic device 200 is less than the threshold value, in operation 760 , the electronic device 200 displays the brightness value of the first screen having the first color data. It can be determined whether it is less than a preset value. For example, the brightness value of the first screen obtained in operation 710 may be compared with a preset value.
  • the electronic device 200 when the electronic device 200 determines that the illuminance value around the electronic device 200 is equal to or greater than the threshold value, in operation 780 , the electronic device 200 maintains the first screen.
  • the electronic device 200 may consider that a sufficient amount of light has been secured for face recognition, so the electronic device 200 does not adjust the brightness of the first screen. Instead, the first screen displayed on the display 220 may be maintained as it is.
  • the electronic device 200 when the electronic device 200 determines that the brightness value of the first screen having the first color data is less than a preset value, in operation 770, the electronic device 200 performs a second change in the first color data.
  • a second screen having color data may be displayed.
  • the second color data may mean color data in which the first color data is inverted.
  • the second color data may be obtained based on RGB values of pixels included in an image displayed on the second screen.
  • the image displayed on the second screen is an image corresponding to the image displayed on the first screen, and may mean an image having the same properties (size, components, etc.) except for color.
  • the RGB values of pixels constituting the image displayed on the second screen may be obtained by inverting the RGB values of pixels constituting the image displayed on the first screen.
  • the second RGB value of one pixel constituting the image displayed on the second screen may be obtained by subtracting the first RGB value of the one pixel constituting the image displayed on the first screen from 256. have. For example, when the first RGB value is (a, b, c), the second RGB value obtained by inverting the first RGB value may be (256-a, 256-b, 256-c).
  • the electronic device 200 may maintain the first screen. . If the electronic device 200 determines that a sufficient amount of light can be secured for face recognition even through the first screen, it may display the color of the first screen as it is without changing the color.
  • the electronic device 200 may perform face recognition of the user and release the lock state based on a result of face recognition.
  • the electronic device 200 compares and matches the user's face information obtained through the sensor 230 (eg, a camera, a depth sensor) included in the electronic device 200 with the existing registered face information. After determining whether or not there is a match, the locked state of the electronic device 200 may be released. For example, if the electronic device 200 compares the user's face image acquired through the camera with the previously registered user's image and determines that they match, the electronic device 200 may be unlocked. . Also, for example, when the electronic device 200 compares the user's face scan data acquired through a depth sensor with the existing registered face scan data and determines that they do not match, You can keep it locked.
  • the sensor 230 eg, a camera, a depth sensor
  • FIG. 8 illustrates an example of an operation of displaying a screen after unlocking the lock state of the electronic device according to an embodiment.
  • the electronic device 200 may display on the display 220 a second screen having second color data in which the first color data is changed.
  • Operation 810 may correspond to operation 630 of FIG. 6 .
  • Operation 810 may correspond to operation 770 of FIG. 7 .
  • the electronic device 200 performs an operation of displaying the first screen, an operation of comparing an illuminance value around the electronic device 200 measured through the illuminance sensor 240 with a threshold value, and the brightness value of the first screen and A comparison operation of a preset value may be performed.
  • operation 820 the user's face recognition may be performed using the sensor 230 while the second screen is displayed, and the lock state of the electronic device 200 may be released based on the face recognition result.
  • Operation 820 may correspond to operations 640 and 650 of FIG. 6 .
  • Operation 820 may correspond to operations 770 and 790 of FIG. 7 .
  • the electronic device 200 may display a first screen having first color data.
  • the electronic device 200 performs face recognition by displaying a second screen having the second color data in which the first color data is changed on the display 220, and then displays the second screen having the first color data to display the original screen again.
  • the first screen may be displayed.
  • the first screen displayed in operation 830 may include information indicating that the lock state is released.
  • it may include an icon indicating that the lock has been released (eg, a model of an unlocked lock).
  • the electronic device 200 may display a home screen that is a lock release screen on the display 220 .
  • An electronic device includes a sensor for performing facial recognition, and at least one processor electrically connected to the display and the sensor, wherein the at least one processor is configured to lock the electronic device.
  • a first screen having first color data is displayed on the display, an unlock event of the electronic device is detected, and in response to the detection of the unlock event, the brightness value of the first screen is a preset value. If less than, a second screen having the second color data in which the first color data is changed is displayed on the display, and the user's face is recognized using the sensor while the second screen is displayed on the display,
  • the lock state may be released based on a result of performing the face recognition.
  • the at least one processor when the brightness value of the first screen is equal to or greater than the preset value, the at least one processor maintains the first screen, and uses the sensor while the first screen is displayed. face recognition can be performed.
  • the electronic device includes an illuminance sensor electrically connected to the at least one processor, wherein the at least one processor acquires an illuminance value around the electronic device through the illuminance sensor, and the illuminance value When it is less than this threshold value, it may be determined whether the brightness value of the first screen is less than the preset value.
  • the brightness value of the first screen may be an average value of brightness values of pixels included in the first screen.
  • the first color data includes a first RGB value indicating an RGB (red, green, blue) value of the first color data
  • the second color data is an RGB value of the second color data.
  • a second RGB value indicating a value may be included, and the sum of the first RGB value and the second RGB value may be constant.
  • the at least one processor may display the first screen having the first color data when the lock state is released.
  • the at least one processor obtains the user's face information using the sensor while the second screen is displayed, and the face information is stored in advance in the electronic device. and, the lock state may be released.
  • the senor may include at least one of a camera and a depth sensor.
  • the unlock event may include at least one of a face recognition request and an iris recognition request.
  • the method of operating an electronic device includes displaying a first screen having first color data on a display of the electronic device in a locked state of the electronic device, and unlocking the electronic device.
  • An operation of detecting an event an operation of displaying a second screen having the second color data in which the first color data is changed when the brightness value of the first screen is less than a preset value in response to the detection of the lock release event , while the second screen is displayed, performing face recognition of the user using a sensor of the electronic device, and releasing the lock state based on a result of face recognition.
  • maintaining the first screen displayed on the display of the electronic device, and the user's face while the first screen is displayed It may include an operation for performing recognition.
  • acquiring an illuminance value around the electronic device through an illuminance sensor, and determining whether the luminance value of the first screen is less than the preset value when the illuminance value is less than a threshold value It can include actions.
  • the method may include displaying the first screen having the first color data.
  • obtaining face information of the user using a sensor of the electronic device while the second screen is displayed, wherein the face information matches face information stored in advance in the electronic device may include an operation of releasing the lock state.
  • detecting that the face recognition fails and displaying a third screen having third color data on a display of the electronic device, wherein the third color data is the second color It may have a higher brightness than data.
  • a non-transitory recording medium storing computer readable instructions according to an embodiment of the present disclosure
  • the instructions are executed by at least one processor of the electronic device, the electronic device displaying a first screen having first color data on the display of the electronic device in a locked state of When the brightness value of is less than a preset value, displaying a second screen having the second color data in which the first color data is changed, while the second screen is displayed, the user's An operation of performing facial recognition and an operation of releasing the lock state based on a result of performing the facial recognition may be performed.
  • the brightness value of the first screen when the brightness value of the first screen is equal to or greater than the preset value, maintaining the first screen displayed on the display of the electronic device, and recognizing the user's face while the first screen is displayed It can be made to perform an action to perform
  • acquiring an illuminance value around the electronic device through an illuminance sensor, and determining whether the luminance value of the first screen is less than the preset value when the illuminance value is less than a threshold value action can be made.
  • an operation of displaying the first screen having the first color data may be performed.
  • the second screen while the second screen is displayed, using a sensor of the electronic device to obtain the user's face information (face information); and when the facial information matches facial information previously stored in the electronic device, an operation of releasing the lock state may be performed.
  • the electronic device may have various types of devices.
  • the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device.
  • a portable communication device eg, a smart phone
  • a computer device e.g., a smart phone
  • a portable multimedia device e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a wearable device e.g., a smart bracelet
  • a home appliance device e.g., a home appliance
  • first, second, or first or second may simply be used to distinguish an element from other elements in question, and may refer elements to other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”. When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.
  • module used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit.
  • a module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101).
  • a storage medium eg, internal memory 136 or external memory 138
  • the processor eg, the processor 120
  • the device eg, the electronic device 101
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.
  • a signal eg, electromagnetic wave
  • the method according to various embodiments disclosed in this document may be provided in a computer program product (computer program product).
  • Computer program products may be traded between sellers and buyers as commodities.
  • the computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly or online between smartphones (eg: smartphones).
  • a portion of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.
  • each component eg, a module or a program of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have.
  • one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, a module or a program
  • the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. .
  • operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. , or one or more other operations may be added.

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Abstract

Un dispositif électronique est divulgué. Le dispositif électronique selon la présente invention peut comprendre : un dispositif d'affichage ; un capteur pour mettre en oeuvre une reconnaissance faciale ; et au moins un processeur connecté électriquement au dispositif d'affichage et au capteur. L'au moins un processeur affiche un premier écran comportant des premières données de couleur sur le dispositif d'affichage dans un état verrouillé du dispositif électronique ; détecte un événement de déverrouillage du dispositif électronique ; en réponse à la détection de l'événement de déverrouillage, affiche un second écran comportant des secondes données de couleur obtenues par une modification des premières données de couleur, sur le dispositif d'affichage, lorsque la valeur de luminosité du premier écran est inférieure à une valeur préconfigurée ; pendant que le second écran est affiché, mettre en oeuvre une reconnaissance faciale d'un utilisateur au moyen du capteur ; et libère l'état verrouillé sur la base du résultat de la reconnaissance faciale mise en oeuvre. Divers autres modes de réalisation identifiés par la description sont également possibles.
PCT/KR2022/005175 2021-04-30 2022-04-11 Procédé et dispositif de reconnaissance faciale par inversion de couleurs sur un écran WO2022231168A1 (fr)

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Citations (5)

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KR100457534B1 (ko) * 2002-09-13 2004-11-17 삼성전자주식회사 휘도 및 색 온도 조정 장치 및 방법
KR20120052019A (ko) * 2010-11-15 2012-05-23 엘지디스플레이 주식회사 영상 표시장치 및 구동방법
JP2017079001A (ja) * 2015-10-21 2017-04-27 レノボ・シンガポール・プライベート・リミテッド 情報処理装置、表示装置の輝度制御方法、及びコンピュータが実行可能なプログラム
KR20180022112A (ko) * 2016-08-23 2018-03-06 삼성전자주식회사 홍채 센서를 포함하는 전자 장치 및 이의 운용 방법
WO2021017561A1 (fr) * 2019-07-30 2021-02-04 深圳市商汤科技有限公司 Procédé et appareil de reconnaissance faciale, dispositif électronique et support de stockage

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100457534B1 (ko) * 2002-09-13 2004-11-17 삼성전자주식회사 휘도 및 색 온도 조정 장치 및 방법
KR20120052019A (ko) * 2010-11-15 2012-05-23 엘지디스플레이 주식회사 영상 표시장치 및 구동방법
JP2017079001A (ja) * 2015-10-21 2017-04-27 レノボ・シンガポール・プライベート・リミテッド 情報処理装置、表示装置の輝度制御方法、及びコンピュータが実行可能なプログラム
KR20180022112A (ko) * 2016-08-23 2018-03-06 삼성전자주식회사 홍채 센서를 포함하는 전자 장치 및 이의 운용 방법
WO2021017561A1 (fr) * 2019-07-30 2021-02-04 深圳市商汤科技有限公司 Procédé et appareil de reconnaissance faciale, dispositif électronique et support de stockage

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