WO2022105670A1 - 一种显示方法及终端 - Google Patents

一种显示方法及终端 Download PDF

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Publication number
WO2022105670A1
WO2022105670A1 PCT/CN2021/130129 CN2021130129W WO2022105670A1 WO 2022105670 A1 WO2022105670 A1 WO 2022105670A1 CN 2021130129 W CN2021130129 W CN 2021130129W WO 2022105670 A1 WO2022105670 A1 WO 2022105670A1
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WO
WIPO (PCT)
Prior art keywords
camera
value
brightness value
view
terminal
Prior art date
Application number
PCT/CN2021/130129
Other languages
English (en)
French (fr)
Inventor
冯寒予
朱聪超
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to US18/253,636 priority Critical patent/US20240007735A1/en
Priority to EP21893817.3A priority patent/EP4231630A4/en
Publication of WO2022105670A1 publication Critical patent/WO2022105670A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/71—Circuitry for evaluating the brightness variation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/45—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders
    • H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
    • H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the technical field of terminals, and in particular, to a display method and a terminal.
  • the function of camera zoom is getting more and more attention, and nowadays mobile phones generally use multi-camera modules.
  • the zoom function for example, the focal length of a camera is zoomed from 1x to 10x, it will first zoom in the current camera screen, When the zoom ratio reaches a certain threshold, the system will switch the camera to another camera, making full use of the different characteristics of the multi-camera module.
  • the present application provides a display method and terminal, and also provides a computer-readable storage medium to provide a display method that makes light metering more stable, thereby improving the stability of the brightness change of the displayed picture.
  • the present application provides a display method, which is applied to a terminal, where the terminal includes at least one camera, and the method includes:
  • the preview image obtained by the camera at the first field of view is displayed, and the preview image has a fused brightness value.
  • the camera includes a first camera and a second camera, and acquiring a first brightness value of the camera at a first angle of view includes:
  • the camera includes a first camera, and acquiring the first brightness value of the camera under the first field of view includes:
  • first luminance value and the second luminance value are fused to obtain a fused luminance value, including:
  • the second luminance value is used as the fusion luminance value
  • the difference value is greater than a first threshold, and the first luminance value is smaller than the second luminance value, increasing the first luminance value by a first difference value to obtain the fusion luminance value;
  • the difference value is greater than a first threshold, and the first luminance value is greater than the second luminance value, reducing the first luminance value by a second difference value to obtain the fusion luminance value;
  • the first difference value and the second difference value are determined based on the second luminance value.
  • the second luminance value is obtained by the camera at a field angle of 1 times the focal length.
  • the present application provides a terminal, including a processor and a storage device, the storage device stores an application program, and when the application program is run by the processor, the terminal performs the following steps:
  • the preview image obtained by the camera at the first field of view is displayed, and the preview image has a fused brightness value.
  • the camera includes a first camera and a second camera, and when the application is run by the processor, the terminal executes the step of acquiring the first brightness value of the camera under the first field of view, including the following steps:
  • the terminal executes the step of acquiring the second brightness value of the camera under the preset second field of view
  • the camera includes a first camera, and when the application is run by the processor, the terminal causes the terminal to perform the step of acquiring the first brightness value of the camera under the first field of view, including the following steps:
  • the application When the application is run by the processor, it causes the terminal to execute the step of acquiring the second brightness value of the camera under the preset second field of view, including the following steps:
  • the terminal executes the step of fusing the first brightness value and the second brightness value to obtain the fused brightness value, including the following steps:
  • the second luminance value is used as the fusion luminance value
  • the difference value is greater than a first threshold, and the first luminance value is smaller than the second luminance value, increasing the first luminance value by a first difference value to obtain the fusion luminance value;
  • the difference value is greater than a first threshold, and the first luminance value is greater than the second luminance value, reducing the first luminance value by a second difference value to obtain the fusion luminance value;
  • the first difference value and the second difference value are determined based on the second luminance value.
  • the second luminance value is obtained by the camera at a field angle of 1 times the focal length.
  • the present application provides a display device, comprising:
  • a detection module for detecting a first operation of the user for adjusting the field of view
  • a response module in response to the detected first operation, determining a first angle of view
  • a first acquisition module configured to acquire, based on the first angle of view, the first luminance value of the camera under the first angle of view;
  • a second acquisition module configured to acquire the second luminance value of the camera under the preset second field of view
  • the fusion module is used to fuse the first brightness value and the second brightness value to obtain the fusion brightness value
  • the display module displays the preview image obtained by the camera at the first field of view, and the preview image has a fused brightness value.
  • the camera includes a first camera and a second camera, and the first acquisition module is further configured to acquire the first brightness value of the first camera under the first field of view;
  • the second acquiring module is further configured to acquire the second luminance value of the second camera under the preset second field of view angle.
  • the camera includes a first camera
  • the first acquisition module is further configured to acquire the first luminance value of the first camera under the first field of view;
  • the second acquiring module is further configured to acquire the second luminance value of the first camera under the preset second angle of view.
  • the fusion module is also used for
  • the second luminance value is used as the fusion luminance value
  • the difference value is greater than a first threshold, and the first luminance value is smaller than the second luminance value, increasing the first luminance value by a first difference value to obtain the fusion luminance value;
  • the difference value is greater than a first threshold, and the first luminance value is greater than the second luminance value, reducing the first luminance value by a second difference value to obtain the fusion luminance value;
  • the first difference value and the second difference value are determined based on the second luminance value. Further, the second luminance value is obtained by the camera at a field angle of 1 times the focal length.
  • the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, which, when executed on a computer, causes the computer to execute the method according to the first aspect.
  • the present application provides a computer program for executing the method of the first aspect when the computer program is executed by a computer.
  • the program in the fourth aspect may be stored in whole or in part on a storage medium packaged with the processor, or may be stored in part or in part in a memory not packaged with the processor.
  • FIG. 1 is a schematic structural diagram of a terminal 100 according to an embodiment of the present application.
  • FIG. 2 is a flowchart of a display method provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of a method for obtaining a fused luminance value provided in an embodiment of the present application
  • FIG. 4 is a line graph of a fused luminance value obtained by fusing a first luminance value and a second luminance value provided in an embodiment of the present application;
  • 5A-5B are schematic diagrams of sending and displaying an acquired image by a display sending camera of a terminal according to an embodiment of the present application.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
  • a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plural means two or more.
  • the function of camera zoom is getting more and more attention, and nowadays mobile phones generally use multi-camera modules.
  • the zoom function for example, the focal length of a camera is zoomed from 1x to 10x, it will first zoom in the current camera screen, When the zoom ratio reaches a certain threshold, the system will switch the camera to another camera, making full use of the different characteristics of the multi-camera module.
  • FIG. 1 is a structural example diagram of a terminal 100
  • the terminal 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, Mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone jack 170D, sensor module 180, buttons 190, motor 191, indicator 192, camera 193, display screen 194, and user Identity module (subscriber identification module, SIM) card interface 195 and so on.
  • SIM subscriber identification module
  • the sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and ambient light. Sensor 180L, bone conduction sensor 180M, etc.
  • the structures illustrated in the embodiments of the present invention do not constitute a specific limitation on the terminal 100 .
  • the terminal 100 may include more or less components than shown, or some components may be combined, or some components may be separated, or different component arrangements.
  • the illustrated components may be implemented in hardware, software, or a combination of software and hardware.
  • the processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (neural-network processing unit, NPU), etc. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.
  • application processor application processor, AP
  • modem processor graphics processor
  • ISP image signal processor
  • controller video codec
  • digital signal processor digital signal processor
  • baseband processor baseband processor
  • neural-network processing unit neural-network processing unit
  • the controller can generate an operation control signal according to the instruction operation code and timing signal, and complete the control of fetching and executing instructions.
  • a memory may also be provided in the processor 110 for storing instructions and data.
  • the memory in processor 110 is cache memory. This memory may hold instructions or data that have just been used or recycled by the processor 110 . If the processor 110 needs to use the instruction or data again, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby increasing the efficiency of the system.
  • the processor 110 may include one or more interfaces.
  • the interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuit sound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous transceiver (universal asynchronous transmitter) receiver/transmitter, UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, subscriber identity module (SIM) interface, and / or universal serial bus (universal serial bus, USB) interface, etc.
  • I2C integrated circuit
  • I2S integrated circuit built-in audio
  • PCM pulse code modulation
  • PCM pulse code modulation
  • UART universal asynchronous transceiver
  • MIPI mobile industry processor interface
  • GPIO general-purpose input/output
  • SIM subscriber identity module
  • USB universal serial bus
  • the I2C interface is a bidirectional synchronous serial bus that includes a serial data line (SDA) and a serial clock line (SCL).
  • the processor 110 may contain multiple sets of I2C buses.
  • the processor 110 can be respectively coupled to the touch sensor 180K, the charger, the flash, the camera 193 and the like through different I2C bus interfaces.
  • the processor 110 may couple the touch sensor 180K through the I2C interface, so that the processor 110 and the touch sensor 180K communicate with each other through the I2C bus interface, so as to realize the touch function of the terminal 100 .
  • the I2S interface can be used for audio communication.
  • the processor 110 may contain multiple sets of I2S buses.
  • the processor 110 may be coupled with the audio module 170 through an I2S bus to implement communication between the processor 110 and the audio module 170 .
  • the audio module 170 can transmit audio signals to the wireless communication module 160 through the I2S interface, so as to realize the function of answering calls through a Bluetooth headset.
  • the PCM interface can also be used for audio communications, sampling, quantizing and encoding analog signals.
  • the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface.
  • the audio module 170 can also transmit audio signals to the wireless communication module 160 through the PCM interface, so as to realize the function of answering calls through the Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.
  • the UART interface is a universal serial data bus used for asynchronous communication.
  • the bus may be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication.
  • a UART interface is typically used to connect the processor 110 with the wireless communication module 160 .
  • the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to implement the Bluetooth function.
  • the audio module 170 can transmit audio signals to the wireless communication module 160 through the UART interface, so as to realize the function of playing music through the Bluetooth headset.
  • the MIPI interface can be used to connect the processor 110 with peripheral devices such as the display screen 194 and the camera 193 .
  • MIPI interfaces include camera serial interface (CSI), display serial interface (DSI), etc.
  • the processor 110 communicates with the camera 193 through the CSI interface, so as to realize the shooting function of the terminal 100 .
  • the processor 110 communicates with the display screen 194 through the DSI interface to implement the display function of the terminal 100 .
  • the GPIO interface can be configured by software.
  • the GPIO interface can be configured as a control signal or as a data signal.
  • the GPIO interface may be used to connect the processor 110 with the camera 193, the display screen 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like.
  • the GPIO interface can also be configured as I2C interface, I2S interface, UART interface, MIPI interface, etc.
  • the USB interface 130 is an interface that conforms to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, and the like.
  • the USB interface 130 can be used to connect a charger to charge the terminal 100, and can also be used to transmit data between the terminal 100 and peripheral devices. It can also be used to connect headphones to play audio through the headphones. This interface can also be used to connect other terminals, such as AR devices, etc.
  • the interface connection relationship between the modules illustrated in the embodiment of the present invention is only a schematic illustration, and does not constitute a structural limitation of the terminal 100 .
  • the terminal 100 may also adopt different interface connection manners in the foregoing embodiments, or a combination of multiple interface connection manners.
  • the charging management module 140 is used to receive charging input from the charger.
  • the charger may be a wireless charger or a wired charger.
  • the charging management module 140 may receive charging input from the wired charger through the USB interface 130 .
  • the charging management module 140 may receive wireless charging input through the wireless charging coil of the terminal 100 . While the charging management module 140 charges the battery 142 , it can also supply power to the terminal through the power management module 141 .
  • the power management module 141 is used for connecting the battery 142 , the charging management module 140 and the processor 110 .
  • the power management module 141 receives input from the battery 142 and/or the charging management module 140, and supplies power to the processor 110, the internal memory 121, the display screen 194, the camera 193, and the wireless communication module 160.
  • the power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle times, battery health status (leakage, impedance).
  • the power management module 141 may also be provided in the processor 110 .
  • the power management module 141 and the charging management module 140 may also be provided in the same device.
  • the wireless communication function of the terminal 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modulation and demodulation processor, the baseband processor, and the like.
  • Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals.
  • Each antenna in terminal 100 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization.
  • the antenna 1 can be multiplexed as a diversity antenna of the wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.
  • the mobile communication module 150 may provide a wireless communication solution including 2G/3G/4G/5G, etc. applied on the terminal 100 .
  • the mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (LNA) and the like.
  • the mobile communication module 150 can receive electromagnetic waves from the antenna 1, filter and amplify the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation.
  • the mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and then turn it into an electromagnetic wave for radiation through the antenna 1 .
  • at least part of the functional modules of the mobile communication module 150 may be provided in the processor 110 .
  • at least part of the functional modules of the mobile communication module 150 may be provided in the same device as at least part of the modules of the processor 110 .
  • the modem processor may include a modulator and a demodulator.
  • the modulator is used to modulate the low frequency baseband signal to be sent into a medium and high frequency signal.
  • the demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator transmits the demodulated low-frequency baseband signal to the baseband processor for processing.
  • the low frequency baseband signal is processed by the baseband processor and passed to the application processor.
  • the application processor outputs sound signals through audio devices (not limited to the speaker 170A, the receiver 170B, etc.), or displays images or videos through the display screen 194 .
  • the modem processor may be a stand-alone device.
  • the modem processor may be independent of the processor 110, and may be provided in the same device as the mobile communication module 150 or other functional modules.
  • the wireless communication module 160 can provide applications on the terminal 100 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions.
  • WLAN wireless local area networks
  • BT wireless fidelity
  • GNSS global navigation satellite system
  • frequency modulation frequency modulation, FM
  • NFC near field communication technology
  • infrared technology infrared, IR
  • the wireless communication module 160 may be one or more devices integrating at least one communication processing module.
  • the wireless communication module 160 receives electromagnetic waves via the antenna 2 , frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 .
  • the wireless communication module 160 can also receive the signal to be sent from the processor 110 , perform frequency modulation on it, amplify it, and convert it into electromagnetic waves for
  • the antenna 1 of the terminal 100 is coupled with the mobile communication module 150, and the antenna 2 is coupled with the wireless communication module 160, so that the terminal 100 can communicate with the network and other devices through wireless communication technology.
  • the wireless communication technologies may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), broadband Code Division Multiple Access (WCDMA), Time Division Code Division Multiple Access (TD-SCDMA), Long Term Evolution (LTE), BT, GNSS, WLAN, NFC , FM, and/or IR technology, etc.
  • the GNSS may include a global positioning system (global positioning system, GPS), a global navigation satellite system (GLONASS), a Beidou navigation satellite system (BDS), a quasi-zenith satellite system (quasi -zenith satellite system, QZSS) and/or satellite based augmentation systems (SBAS), it should be noted that the number of antennas shown in the figure is only an example, and more can be set, such as 3, 4 or more.
  • GPS global positioning system
  • GLONASS global navigation satellite system
  • BDS Beidou navigation satellite system
  • QZSS quasi-zenith satellite system
  • SBAS satellite based augmentation systems
  • the terminal 100 implements a display function through a GPU, a display screen 194, an application processor, and the like.
  • the GPU is a microprocessor for image processing, and is connected to the display screen 194 and the application processor.
  • the GPU is used to perform mathematical and geometric calculations for graphics rendering.
  • Processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.
  • Display screen 194 is used to display images, videos, and the like.
  • Display screen 194 includes a display panel.
  • the display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (active-matrix organic light).
  • LED diode AMOLED
  • flexible light-emitting diode flexible light-emitting diode (flex light-emitting diode, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diode (quantum dot light emitting diodes, QLED) and so on.
  • the terminal 100 may include one or N display screens 194 , where N is a positive integer greater than one.
  • the terminal 100 can realize the shooting function through the ISP, the camera 193, the video codec, the GPU, the display screen 194 and the application processor.
  • the ISP is used to process the data fed back by the camera 193 .
  • the shutter is opened, the light is transmitted to the camera photosensitive element through the lens, the light signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing, and converts it into an image visible to the naked eye.
  • ISP can also perform algorithm optimization on image noise, brightness, and skin tone.
  • ISP can also optimize the exposure, color temperature and other parameters of the shooting scene.
  • the ISP may be provided in the camera 193 .
  • Camera 193 is used to capture still images or video.
  • the object is projected through the lens to generate an optical image onto the photosensitive element.
  • the photosensitive element may be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor.
  • CMOS complementary metal-oxide-semiconductor
  • the photosensitive element converts the optical signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal.
  • the ISP outputs the digital image signal to the DSP for processing.
  • DSP converts digital image signals into standard RGB, YUV and other formats of image signals.
  • the terminal 100 may include 1 or N cameras 193 , where N is a positive integer greater than 1.
  • a digital signal processor is used to process digital signals, in addition to processing digital image signals, it can also process other digital signals. For example, when the terminal 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the energy of the frequency point, and so on.
  • Video codecs are used to compress or decompress digital video.
  • Terminal 100 may support one or more video codecs.
  • the terminal 100 can play or record videos in various encoding formats, for example, moving picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, MPEG4, and so on.
  • MPEG moving picture experts group
  • the NPU is a neural-network (NN) computing processor.
  • NN neural-network
  • Applications such as intelligent cognition of the terminal 100 can be implemented through the NPU, such as image recognition, face recognition, speech recognition, text understanding, and the like.
  • the external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the terminal 100.
  • the external memory card communicates with the processor 110 through the external memory interface 120 to realize the data storage function. For example to save files like music, video etc in external memory card.
  • Internal memory 121 may be used to store computer executable program code, which includes instructions.
  • the internal memory 121 may include a storage program area and a storage data area.
  • the storage program area can store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), and the like.
  • the storage data area may store data (such as audio data, phone book, etc.) created during the use of the terminal 100 and the like.
  • the internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (UFS), and the like.
  • the processor 110 executes various functional applications and data processing of the terminal 100 by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.
  • the terminal 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like. Such as music playback, recording, etc.
  • the audio module 170 is used for converting digital audio information into analog audio signal output, and also for converting analog audio input into digital audio signal. Audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be provided in the processor 110 , or some functional modules of the audio module 170 may be provided in the processor 110 .
  • Speaker 170A also referred to as a "speaker" is used to convert audio electrical signals into sound signals.
  • the terminal 100 can listen to music through the speaker 170A, or listen to a hands-free call.
  • the receiver 170B also referred to as "earpiece" is used to convert audio electrical signals into sound signals.
  • the voice can be answered by placing the receiver 170B close to the human ear.
  • the microphone 170C also called “microphone” or “microphone” is used to convert sound signals into electrical signals.
  • the user can make a sound by approaching the microphone 170C through a human mouth, and input the sound signal into the microphone 170C.
  • the terminal 100 may be provided with at least one microphone 170C.
  • the terminal 100 may be provided with two microphones 170C, which can implement a noise reduction function in addition to collecting sound signals.
  • the terminal 100 may further be provided with three, four or more microphones 170C to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions.
  • the earphone jack 170D is used to connect wired earphones.
  • the earphone interface 170D may be the USB interface 130, or may be a 3.5mm open mobile terminal platform (OMTP) standard interface, a cellular telecommunications industry association of the USA (CTIA) standard interface.
  • OMTP open mobile terminal platform
  • CTIA cellular telecommunications industry association of the USA
  • the pressure sensor 180A is used to sense pressure signals, and can convert the pressure signals into electrical signals.
  • the pressure sensor 180A may be provided on the display screen 194 .
  • the capacitive pressure sensor may be comprised of at least two parallel plates of conductive material. When a force is applied to the pressure sensor 180A, the capacitance between the electrodes changes.
  • the terminal 100 determines the intensity of the pressure according to the change in capacitance. When a touch operation acts on the display screen 194, the terminal 100 detects the intensity of the touch operation according to the pressure sensor 180A.
  • the terminal 100 may also calculate the touched position according to the detection signal of the pressure sensor 180A.
  • touch operations acting on the same touch position but with different touch operation intensities may correspond to different operation instructions. For example, when a touch operation whose intensity is less than the first pressure threshold acts on the short message application icon, the instruction for viewing the short message is executed. When a touch operation with a touch operation intensity greater than or equal to the first pressure threshold acts on the short message application icon, the instruction to create a new short message is executed.
  • the gyro sensor 180B may be used to determine the motion attitude of the terminal 100 .
  • the angular velocity of terminal 100 about three axes ie, x, y, and z axes
  • the gyro sensor 180B can be used for image stabilization.
  • the gyroscope sensor 180B detects the angle at which the terminal 100 shakes, calculates the distance to be compensated by the lens module according to the angle, and allows the lens to counteract the shake of the terminal 100 through reverse motion to achieve anti-shake.
  • the gyro sensor 180B can also be used for navigation and somatosensory game scenarios.
  • the air pressure sensor 180C is used to measure air pressure.
  • the terminal 100 calculates the altitude through the air pressure value measured by the air pressure sensor 180C to assist in positioning and navigation.
  • the magnetic sensor 180D includes a Hall sensor.
  • the terminal 100 can detect the opening and closing of the flip holster using the magnetic sensor 180D.
  • the terminal 100 can detect the opening and closing of the flip according to the magnetic sensor 180D. Further, according to the detected opening and closing state of the leather case or the opening and closing state of the flip cover, characteristics such as automatic unlocking of the flip cover are set.
  • the acceleration sensor 180E can detect the magnitude of the acceleration of the terminal 100 in various directions (generally three axes). When the terminal 100 is stationary, the magnitude and direction of gravity can be detected. It can also be used to identify the terminal posture, and can be used in horizontal and vertical screen switching, pedometer and other applications.
  • the terminal 100 can measure the distance through infrared or laser. In some embodiments, when shooting a scene, the terminal 100 can use the distance sensor 180F to measure the distance to achieve fast focusing.
  • Proximity light sensor 180G may include, for example, light emitting diodes (LEDs) and light detectors, such as photodiodes.
  • the light emitting diodes may be infrared light emitting diodes.
  • the terminal 100 emits infrared light to the outside through light emitting diodes.
  • the terminal 100 detects infrared reflected light from nearby objects using a photodiode. When sufficient reflected light is detected, it can be determined that there is an object near the terminal 100 . When insufficient reflected light is detected, the terminal 100 may determine that there is no object near the terminal 100 .
  • the terminal 100 can use the proximity light sensor 180G to detect that the user holds the terminal 100 close to the ear to talk, so as to automatically turn off the screen to save power.
  • Proximity light sensor 180G can also be used in holster mode, pocket mode automatically unlocks and locks the screen.
  • the ambient light sensor 180L is used to sense ambient light brightness.
  • the terminal 100 can adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness.
  • the ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures.
  • the ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the terminal 100 is in a pocket, so as to prevent accidental touch.
  • the fingerprint sensor 180H is used to collect fingerprints.
  • the terminal 100 can use the collected fingerprint characteristics to unlock the fingerprint, access the application lock, take a picture with the fingerprint, answer the incoming call with the fingerprint, and the like.
  • the temperature sensor 180J is used to detect the temperature.
  • the terminal 100 uses the temperature detected by the temperature sensor 180J to execute a temperature processing strategy. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold value, the terminal 100 reduces the performance of the processor located near the temperature sensor 180J, so as to reduce power consumption and implement thermal protection.
  • the terminal 100 when the temperature is lower than another threshold, the terminal 100 heats the battery 142 to avoid abnormal shutdown of the terminal 100 due to low temperature.
  • the terminal 100 boosts the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperature.
  • Touch sensor 180K also called “touch device”.
  • the touch sensor 180K may be disposed on the display screen 194 , and the touch sensor 180K and the display screen 194 form a touch screen, also called a “touch screen”.
  • the touch sensor 180K is used to detect a touch operation on or near it.
  • the touch sensor can pass the detected touch operation to the application processor to determine the type of touch event.
  • Visual output related to touch operations may be provided through display screen 194 .
  • the touch sensor 180K may also be disposed on the surface of the terminal 100 , which is different from the position where the display screen 194 is located.
  • the bone conduction sensor 180M can acquire vibration signals.
  • the bone conduction sensor 180M can acquire the vibration signal of the vibrating bone mass of the human voice.
  • the bone conduction sensor 180M can also contact the pulse of the human body and receive the blood pressure beating signal.
  • the bone conduction sensor 180M can also be disposed in the earphone, combined with the bone conduction earphone.
  • the audio module 170 can analyze the voice signal based on the vibration signal of the vocal vibration bone block obtained by the bone conduction sensor 180M, so as to realize the voice function.
  • the application processor can analyze the heart rate information based on the blood pressure beat signal obtained by the bone conduction sensor 180M, and realize the function of heart rate detection.
  • the keys 190 include a power-on key, a volume key, and the like. Keys 190 may be mechanical keys. It can also be a touch key.
  • the terminal 100 may receive key input and generate key signal input related to user settings and function control of the terminal 100 .
  • Motor 191 can generate vibrating cues.
  • the motor 191 can be used for vibrating alerts for incoming calls, and can also be used for touch vibration feedback.
  • touch operations acting on different applications can correspond to different vibration feedback effects.
  • the motor 191 can also correspond to different vibration feedback effects for touch operations on different areas of the display screen 194 .
  • Different application scenarios for example: time reminder, receiving information, alarm clock, games, etc.
  • the touch vibration feedback effect can also support customization.
  • the indicator 192 can be an indicator light, which can be used to indicate the charging state, the change of the power, and can also be used to indicate a message, a missed call, a notification, and the like.
  • the SIM card interface 195 is used to connect a SIM card.
  • the SIM card can be contacted and separated from the terminal 100 by inserting into the SIM card interface 195 or pulling out from the SIM card interface 195 .
  • the terminal 100 can support 1 or N SIM card interfaces, where N is a positive integer greater than 1.
  • the SIM card interface 195 can support Nano SIM card, Micro SIM card, SIM card and so on. Multiple cards can be inserted into the same SIM card interface 195 at the same time. The types of the plurality of cards may be the same or different.
  • the SIM card interface 195 can also be compatible with different types of SIM cards.
  • the SIM card interface 195 is also compatible with external memory cards.
  • the terminal 100 interacts with the network through the SIM card to realize functions such as calls and data communication.
  • the terminal 100 employs an eSIM, ie an embedded SIM card.
  • the eSIM card can be embedded in the terminal 100 and cannot be separated from the terminal 100 .
  • FIG. 2 it specifically relates to a flowchart of an embodiment of a display method of the present application.
  • the method can be applied to the above-mentioned terminal 100, and the method specifically includes:
  • Step 202 the terminal detects a first operation of the user for adjusting the field of view angle, and determines a first field of view angle of the first camera in response to the detected first operation.
  • the terminal includes but is not limited to terminals such as notebook computers, tablet computers, smart phones, and smart home appliances, and the terminal includes at least one camera, such as 1, 2, 3, or 4 cameras.
  • the camera of the terminal may include a wide-angle camera, a main camera, and a telephoto camera, and each camera may work in a different focal length range.
  • the working focal length is 1x-3x, and the working focal length of the telephoto camera is more than 3x.
  • the user can adjust the field of view of the terminal camera by adjusting the focal length.
  • the camera of the terminal can The respective working focal length ranges are switched to each other.
  • the camera of the device of the terminal may only include a wide-angle camera and a telephoto camera, and each camera may work in different focal lengths respectively.
  • the wide-angle camera works at 0.6x-3x
  • the telephoto camera works above 3x.
  • the user can adjust the field of view of the camera by adjusting the focal length of the user interface of the terminal.
  • the cameras of the terminal can be switched to each other based on their respective working focal length ranges.
  • the camera of the terminal includes a display sending camera, which is a camera that displays the acquired image on the user interface of the terminal, and the image displayed on the user interface is called the sending display image.
  • the sending camera can be switched based on the user's action of adjusting the focal length of the camera.
  • the wide-angle camera works at 0.6x-1x
  • the main camera works at 1x-3x
  • the telephoto camera works at 3x or more, assuming that the terminal sends
  • the display camera is a telephoto camera.
  • the display camera is switched from a telephoto camera to a wide-angle camera.
  • the first camera shown in step 202 corresponds to the display camera, and the first angle of view is the angle of view corresponding to the first camera, that is, the angle of view corresponding to when the display camera sends the acquired picture for display, wherein,
  • the size of the first angle of view of the first camera of the terminal corresponds to the size of its working focal length.
  • the terminal detects the user's operation of adjusting the focal length, it can determine the first angle of view of the first camera based on the working focal length of the first camera .
  • FIG. 5A is specifically related to a schematic diagram of sending and displaying the acquired picture by the display sending camera of the terminal provided by an embodiment of the present application
  • FIG. 5B is the present application.
  • Another embodiment provides a schematic diagram of sending and displaying an acquired picture by a display sending camera of a terminal;
  • the terminal shown in FIG. 5A includes a first camera C1 and a second camera C2 , wherein the first camera is a display camera.
  • the first camera C1 and the second camera C2 can work at the same time. It can be seen from FIG. 5A that the field of view of the second camera C2 is larger than that of the first camera C1, and the fields of view of the two cameras overlap.
  • the camera C1 and the second camera C2 are turned on at the same time and point to the target object 303 .
  • the terminal can simultaneously acquire the brightness of the first camera C1 under the first angle of view when the display screen is sent and the brightness of the second camera C2 under the preset second angle of view, wherein the preset second angle of view Indicates the field angle of the second camera C2 under the preset focal length.
  • the first camera C1 is a display camera
  • the acquired first picture 302A is a picture displayed to the user.
  • the second picture 301A is a picture obtained by the second camera under the preset second angle of view.
  • the first camera C1 is a telephoto camera
  • the second camera C2 is the main camera.
  • the preset second field of view is the field of view of the main camera when the focal length is 1x.
  • the long The focus camera is a display camera, that is, the first picture 302A acquired by the telephoto camera is a picture displayed to the user.
  • the terminal shown includes a first camera C1
  • the first camera C1 is a display camera.
  • the brightness of the field of view of the picture obtained by the first camera under the corresponding field of view angles of different focal lengths may be different, and the terminal can simultaneously obtain the brightness of the first camera under the first field of view and the first field of view.
  • the brightness of a camera at a preset second field of view For example, the camera shoots the target object 303, the first picture 302B is the picture under the field of view of the camera when the display screen is sent, and the second picture 301B is the camera obtained under the preset second field of view. screen.
  • the first camera C1 is the main camera, and the preset second field of view is the field of view of the main camera when the focal length is 1 ⁇ .
  • Step 204 the terminal obtains, based on the first field of view, the first brightness value of the first camera under the first field of view, where the first brightness value is the brightness value under the corresponding field of view when the first camera is sent for display .
  • the terminal can obtain the first luminance value of the first camera under the first angle of view, which is the corresponding field of view of the sending camera as shown above.
  • the light at the first field of view is transmitted to the photosensitive element of the first camera through the lens of the first camera, and the first camera converts the received light into optical signals through the photosensitive element, and converts the optical signals into electrical signals signal, and then, the photosensitive element of the first camera transmits the electrical signal to the ISP for processing to obtain the first brightness value.
  • Step 206 the terminal obtains the second brightness value of the second camera under a preset second field of view angle, where the preset second field of view is the field of view of the second camera under a preset focal length.
  • the terminal can simultaneously obtain the first brightness value of the first camera at the first angle of view and the second brightness value of the second camera at the preset second angle of view, where the second camera is at the preset second view angle.
  • the light under the field angle is transmitted to its photosensitive element through the lens of the second camera, and the photosensitive element of the second camera converts the optical signal into an electrical signal, and transmits the electrical signal to the above ISP for processing, and then the second brightness is obtained. value.
  • the terminal may simultaneously acquire a first brightness value of the first camera at a first angle of view and a second brightness value of the first camera at a preset second angle of view, the preset second The field of view is the field of view of the first camera under the preset focal length.
  • the first camera is sending the screen
  • the light is transmitted to the entire photosensitive element of the camera through the lens of the first camera, and the pixels collected by the photosensitive element include the pixels under the first field of view and the pixels under the preset second field of view.
  • the first electrical signal corresponding to the pixel under the viewing angle and the electrical signal corresponding to the second pixel under the preset second viewing angle are transmitted to the above-mentioned ISP processing, so as to obtain the first luminance value under the first viewing angle and the preset value.
  • Step 208 the terminal fuses the first luminance value and the second luminance value to obtain a fused luminance value.
  • the terminal may fuse the acquired first brightness value and the acquired second brightness value to obtain a fused brightness value, where the fused brightness value is used to display the display screen acquired by the first camera.
  • Step 210 The terminal displays a preview image obtained by the camera at the first angle of view, and the preview image has the fused brightness value.
  • the fused brightness value is used as the brightness of the sent display screen, so as to avoid the instability of the camera's light metering.
  • FIG. 3 it is specifically related to a flowchart of a method for fusing obtained luminance values provided in an embodiment of the present application.
  • Step 302 the terminal determines whether the difference between the first brightness value and the second brightness value is greater than a first threshold value, specifically, the first threshold value indicates the size of the difference between the first brightness value and the second brightness value, if it is greater than the first threshold value.
  • a threshold value indicating that the brightness difference between the first brightness value and the second brightness value is relatively large, and if it is less than the first threshold value, it indicates that the brightness difference between the first brightness value and the second brightness value is small.
  • the first threshold is a preset threshold, and its size can be set as required.
  • the first brightness value is the brightness of the first camera at the first angle of view
  • the second brightness value is the brightness value of the second camera at the preset second angle of view
  • the second brightness value is the brightness value of the first camera under the preset second field of view.
  • the terminal can directly use the The second brightness value is used as the fusion brightness value, that is, the picture obtained by the first camera is displayed with the second brightness value.
  • the second luminance value is the luminance value under the preset second viewing angle
  • the preset second viewing angle is the viewing angle under the preset focal length
  • the second luminance value is more stable.
  • the first field of view angle will change with the user's action of adjusting the field of view angle, and the first brightness value may also change.
  • directly using the second brightness value as the fusion brightness value will make the metering more stable.
  • FIG. 4 it specifically relates to a line graph of a fused luminance value obtained by fusing a first luminance value and a second luminance value provided in an embodiment of the present application.
  • the first brightness value is directly used as the display brightness of the display screen, that is, the brightness of the display screen when the first brightness value and the second brightness value are not fused, and the solid line indicates an implementation of the present application.
  • the example provided takes the fused brightness value as the display brightness of the sending screen.
  • the size of the second brightness value of the second camera at the preset second field of view is 40, or the first camera is preset at the second viewing angle.
  • the magnitude of the second luminance value at the second viewing angle is 40, and the intersection of the dotted line and the solid line in FIG. 4 indicates the specific magnitude of the second luminance value.
  • step 302 if the difference between the first brightness value and the second brightness value is less than or equal to the first threshold, the terminal may directly use the second brightness value as the fusion brightness value, see the second part d2 of FIG. 4 for details.
  • Step 304 if the difference between the first luminance value and the second luminance value is greater than the first threshold, and the first luminance value is greater than the second luminance value, obtain a second difference (step 3062), and the second difference is used for On the basis of the first brightness value, the fusion brightness value is obtained.
  • the second difference value may be set according to the magnitude of the second brightness value.
  • each second luminance value may be set to correspond to one second difference value as required.
  • the terminal is likely to cause metering instability.
  • the first brightness value in order to avoid the brightness jump of the display screen from being too large, the first brightness value can be subtracted from the second difference value to obtain the fusion brightness value, and the display frame is displayed based on the fusion brightness value. display screen to avoid metering instability when the display screen is directly displayed at the first brightness value.
  • the difference between the first brightness value corresponding to the dotted line and the fused brightness value corresponding to the solid line indicates the second difference value f2.
  • the above-mentioned second difference value is subtracted from the above-mentioned second difference value as the fused brightness value (step 3082 ), and the fused brightness value is used as the brightness of the display screen, thereby making the metering more stable.
  • Step 3061 if the difference between the first brightness value and the second brightness value is greater than the first threshold, and the first brightness value is less than the second brightness value, obtain the first difference value, which is used for the first brightness Based on the value, the fused luminance value is obtained. Specifically, the first difference value is used to compensate the first luminance value.
  • the first difference value f1 may be set according to the magnitude of the second brightness value, and specifically, each first brightness value may be set to correspond to a first difference value as required.
  • the terminal is likely to cause metering instability.
  • the first difference value can be added to the first brightness value to obtain a fusion brightness value (step 3081), and the display transmission display is displayed based on the fusion brightness value. screen, to avoid excessive brightness jump caused by directly displaying the sending screen with the first brightness value, resulting in unstable metering.
  • the difference between the first luminance value corresponding to the dotted line and the fused luminance value corresponding to the solid line indicates the first difference value f1
  • the first brightness value plus the above-mentioned first difference value f1 is used as the fusion brightness value.
  • use the fusion brightness value as the brightness of the sent display screen, so as to avoid camera metering instability.
  • the method for obtaining the fused luminance value shown in the embodiments of the present application is only an example, and other methods may also be included to fuse the first luminance value and the second luminance value to obtain a method for fused luminance value. , will not go into details.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiment of the present invention is schematic, and is only a logical function division, and there may be other division manners in actual implementation.
  • Each functional unit in each of the embodiments of the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • a computer-readable storage medium includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: flash memory, removable hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.

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Abstract

本申请实施例提供了一种显示方法及终端，涉及终端技术领域，该方法包括：检测到用户用于调节视场角的第一操作，响应于检测到的所述第一操作，确定第一视场角，基于所述第一视场角，获取所述摄像头在所述第一视场角下的第一亮度值，获取所述摄像头在预设第二视场角下的第二亮度值，将所述第一亮度值和所述第二亮度值进行融合，获得融合亮度值，显示所述摄像头在所述第一视场角下获取的预览画面，所述预览画面具有所述融合亮度值。本方法使摄像头在变焦过程中，使得测光更稳定，从而提高送显的画面的亮度变化的稳定性。

Description

一种显示方法及终端
本申请要求于2020年11月20日提交中国专利局、申请号为202011313051.1、申请名称为“一种显示方法及终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及终端技术领域，尤其涉及一种显示方法及终端。
背景技术
相机变焦的功能越来越受到重视，并且现在的手机普遍使用多相机模组，当用户使用变焦功能的时候，比如某摄像头焦距从1x变焦到10x，会先在当前摄像头的画面内进行缩放，当变焦倍率达到一定阈值时，系统将该摄像头会切换另一摄像头，充分利用多相机模组不同的特性。
发明内容
本申请提供了一种显示方法及终端，本申请还提供一种计算机可读存储介质，以提供一种显示方法，使得测光更稳定，从而提高送显的画面的亮度变化的稳定性。
第一方面，本申请提供一种显示方法，应用于终端，终端包括至少一个摄像头，方法包括：
检测到用户用于调节视场角的第一操作；
响应于检测到的第一操作，确定第一视场角；
基于第一视场角，获取摄像头在第一视场角下的第一亮度值；
获取摄像头在预设第二视场角下的第二亮度值；
将第一亮度值和第二亮度值进行融合，获得融合亮度值；
显示摄像头在第一视场角下获取的预览画面，预览画面具有融合亮度值。
进一步地，摄像头包括第一摄像头和第二摄像头，获取摄像头在第一视场角下的第一亮度值，包括：
获取第一摄像头在第一视场角下的第一亮度值；
获取摄像头在预设第二视场角下的第二亮度值，包括：
获取第二摄像头在预设第二视场角下的第二亮度值。
进一步地，摄像头包括第一摄像头，获取摄像头在第一视场角下的第一亮度值，包括：
获取第一摄像头在第一视场角下的第一亮度值；
获取摄像头在预设第二视场角下的第二亮度值，包括：
获取第一摄像头在预设第二视场角下的第二亮度值。
进一步地，将第一亮度值和第二亮度值进行融合，获得融合亮度值，包括：
获取第一亮度值与第二亮度值的差值；
判断所述差值是否大于第一阈值；
如果所述差值小于或者等于第一阈值，则以所述第二亮度值作为融合亮度值；
如果所述差值大于第一阈值，且所述第一亮度值小于所述第二亮度值，则将所述第一亮度值增加第一差值，以获得所述融合亮度值；
如果所述差值大于第一阈值，且所述第一亮度值大于所述第二亮度值，则将所述第一亮度值减小第二差值，以获得所述融合亮度值；
其中，所述第一差值和第二差值基于所述第二亮度值确定。
进一步地，第二亮度值由摄像头在1倍焦距的视场角下获得。
第二方面，本申请提供一种终端，包括处理器和存储设备，存储设备存有应用程序，应用程序由处理器运行时，使得终端执行以下步骤：
检测到用户用于调节视场角的第一操作；
响应于检测到的第一操作，确定第一视场角；
基于第一视场角，获取摄像头在第一视场角下的第一亮度值；
获取摄像头在预设第二视场角下的第二亮度值；
将第一亮度值和第二亮度值进行融合，获得融合亮度值；
显示摄像头在第一视场角下获取的预览画面，预览画面具有融合亮度值。
进一步地，摄像头包括第一摄像头和第二摄像头，应用程序由处理器运行时，使得终端执行获取摄像头在第一视场角下的第一亮度值的步骤，包括以下步骤：
获取第一摄像头在第一视场角下的第一亮度值；
应用程序由处理器运行时，使得终端执行获取摄像头在预设第二视场角下的第二亮度值的步骤
获取第二摄像头在预设第二视场角下的第二亮度值。
进一步地，摄像头包括第一摄像头，应用程序由处理器运行时，使得终端执行获取摄像头在第一视场角下的第一亮度值的步骤，包括以下步骤：
获取第一摄像头在第一视场角下的第一亮度值；
应用程序由处理器运行时，使得终端执行获取摄像头在预设第二视场角下的第二亮度值的步骤，包括以下步骤：
获取第一摄像头在预设第二视场角下的第二亮度值。
进一步地，应用程序由处理器运行时，使得终端执行将第一亮度值和第二亮度值进行融合，获得融合亮度值的步骤，包括以下步骤：
获取第一亮度值与第二亮度值的差值；
判断所述差值是否大于第一阈值；
如果所述差值小于或者等于第一阈值，则以所述第二亮度值作为融合亮度值；
如果所述差值大于第一阈值，且所述第一亮度值小于所述第二亮度值，则将所述第一亮度值增加第一差值，以获得所述融合亮度值；
如果所述差值大于第一阈值，且所述第一亮度值大于所述第二亮度值，则将所述第一亮度值减小第二差值，以获得所述融合亮度值；
其中，所述第一差值和第二差值基于所述第二亮度值确定。
进一步地，第二亮度值由摄像头在1倍焦距的视场角下获得。
第四方面，本申请提供一种显示装置，包括：
检测模块，用于检测到用户用于调节视场角的第一操作；
响应模块，响应于检测到的第一操作，确定第一视场角；
第一获取模块，用于基于第一视场角，获取摄像头在第一视场角下的第一亮度值；
第二获取模块，用于获取摄像头在预设第二视场角下的第二亮度值；
融合模块，用于将第一亮度值和第二亮度值进行融合，获得融合亮度值；
显示模块，显示摄像头在第一视场角下获取的预览画面，预览画面具有融合亮度值。
进一步地，摄像头包括第一摄像头和第二摄像头，第一获取模块还用于获取第一摄像头在第一视场角下的第一亮度值；
第二获取模块还用于获取第二摄像头在预设第二视场角下的第二亮度值。
进一步地，摄像头包括第一摄像头，
第一获取模块还用于获取第一摄像头在第一视场角下的第一亮度值；
第二获取模块还用于获取第一摄像头在预设第二视场角下的第二亮度值。
进一步地，融合模块还用于
获取第一亮度值与第二亮度值的差值；
判断所述差值是否大于第一阈值；
如果所述差值小于或者等于第一阈值，则以所述第二亮度值作为融合亮度值；
如果所述差值大于第一阈值，且所述第一亮度值小于所述第二亮度值，则将所述第一亮度值增加第一差值，以获得所述融合亮度值；
如果所述差值大于第一阈值，且所述第一亮度值大于所述第二亮度值，则将所述第一亮度值减小第二差值，以获得所述融合亮度值；
其中，所述第一差值和第二差值基于所述第二亮度值确定。进一步地，第二亮度值由摄像头在1倍焦距的视场角下获得。
第四方面，本申请提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序，当其在计算机上运行时，使得计算机执行如第一方面所述的方法。
第五方面，本申请提供一种计算机程序，当所述计算机程序被计算机执行时，用于执行第一方面所述的方法。
在一种可能的设计中，第四方面中的程序可以全部或者部分存储在与处理器封装在一起的存储介质上，也可以部分或者全部存储在不与处理器封装在一起的存储器上。
附图说明
图1为本申请实施例提供的终端100的结构示意图；
图2为本申请实施例提供的一种显示方法的流程图；
图3为本申请一个实施例中提供的获得融合亮度值的方法的流程图
图4为本申请一个实施例中提供的将第一亮度值和第二亮度值进行融合获得的融合亮度值的线形图；
图5A-5B为本申请一个实施例提供的终端的送显摄像头将获取的画面进行送显的示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请实施例的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本文中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。
以下，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。
相机变焦的功能越来越受到重视，并且现在的手机普遍使用多相机模组，当用户使用变焦功能的时候，比如某摄像头焦距从1x变焦到10x，会先在当前摄像头的画面内进行缩放，当变焦倍率达到一定阈值时，系统将该摄像头会切换另一摄像头，充分利用多相机模组不同的特性。
但是，发明人发现，当终端的摄像头在拍摄画面时，由于摄像头不同焦距对应的视场角的亮度不同，用户对终端的摄像头进行变焦操作时，会造成测光的不稳定，导致画面亮度持续变化。例如，某摄像头拍摄同一对象时，焦 距为1x对应的视场角下的亮度与焦距为10x对应的视场角下的亮度不同。
图1为终端100的结构示例图；
终端100可以包括处理器110，外部存储器接口120，内部存储器121，通用串行总线(universal serial bus，USB)接口130，充电管理模块140，电源管理模块141，电池142，天线1，天线2，移动通信模块150，无线通信模块160，音频模块170，扬声器170A，受话器170B，麦克风170C，耳机接口170D，传感器模块180，按键190，马达191，指示器192，摄像头193，显示屏194，以及用户标识模块(subscriber identification module，SIM)卡接口195等。其中传感器模块180可以包括压力传感器180A，陀螺仪传感器180B，气压传感器180C，磁传感器180D，加速度传感器180E，距离传感器180F，接近光传感器180G，指纹传感器180H，温度传感器180J，触摸传感器180K，环境光传感器180L，骨传导传感器180M等。
可以理解的是，本发明实施例示意的结构并不构成对终端100的具体限定。在本申请另一些实施例中，终端100可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
处理器110可以包括一个或多个处理单元，例如：处理器110可以包括应用处理器(application processor，AP)，调制解调处理器，图形处理器(graphics processing unit，GPU)，图像信号处理器(image signal processor，ISP)，控制器，视频编解码器，数字信号处理器(digital signal processor，DSP)，基带处理器，和/或神经网络处理器(neural-network processing unit，NPU)等。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。
控制器可以根据指令操作码和时序信号，产生操作控制信号，完成取指令和执行指令的控制。
处理器110中还可以设置存储器，用于存储指令和数据。在一些实施例中，处理器110中的存储器为高速缓冲存储器。该存储器可以保存处理器110刚用过或循环使用的指令或数据。如果处理器110需要再次使用该指令或数据，可从所述存储器中直接调用。避免了重复存取，减少了处理器110的等待时间，因而提高了系统的效率。
在一些实施例中，处理器110可以包括一个或多个接口。接口可以包括集成电路(inter-integrated circuit，I2C)接口，集成电路内置音频(inter-integrated circuit sound，I2S)接口，脉冲编码调制(pulse code modulation，PCM)接口，通用异步收发传输器(universal asynchronous receiver/transmitter，UART)接口，移动产业处理器接口(mobile industry processor interface，MIPI)，通用输入输出 (general-purpose input/output，GPIO)接口，用户标识模块(subscriber identity module，SIM)接口，和/或通用串行总线(universal serial bus，USB)接口等。
I2C接口是一种双向同步串行总线，包括一根串行数据线(serial data line，SDA)和一根串行时钟线(derail clock line，SCL)。在一些实施例中，处理器110可以包含多组I2C总线。处理器110可以通过不同的I2C总线接口分别耦合触摸传感器180K，充电器，闪光灯，摄像头193等。例如：处理器110可以通过I2C接口耦合触摸传感器180K，使处理器110与触摸传感器180K通过I2C总线接口通信，实现终端100的触摸功能。
I2S接口可以用于音频通信。在一些实施例中，处理器110可以包含多组I2S总线。处理器110可以通过I2S总线与音频模块170耦合，实现处理器110与音频模块170之间的通信。在一些实施例中，音频模块170可以通过I2S接口向无线通信模块160传递音频信号，实现通过蓝牙耳机接听电话的功能。
PCM接口也可以用于音频通信，将模拟信号抽样，量化和编码。在一些实施例中，音频模块170与无线通信模块160可以通过PCM总线接口耦合。在一些实施例中，音频模块170也可以通过PCM接口向无线通信模块160传递音频信号，实现通过蓝牙耳机接听电话的功能。所述I2S接口和所述PCM接口都可以用于音频通信。
UART接口是一种通用串行数据总线，用于异步通信。该总线可以为双向通信总线。它将要传输的数据在串行通信与并行通信之间转换。在一些实施例中，UART接口通常被用于连接处理器110与无线通信模块160。例如：处理器110通过UART接口与无线通信模块160中的蓝牙模块通信，实现蓝牙功能。在一些实施例中，音频模块170可以通过UART接口向无线通信模块160传递音频信号，实现通过蓝牙耳机播放音乐的功能。
MIPI接口可以被用于连接处理器110与显示屏194，摄像头193等外围器件。MIPI接口包括摄像头串行接口(camera serial interface，CSI)，显示屏串行接口(display serial interface，DSI)等。在一些实施例中，处理器110和摄像头193通过CSI接口通信，实现终端100的拍摄功能。处理器110和显示屏194通过DSI接口通信，实现终端100的显示功能。
GPIO接口可以通过软件配置。GPIO接口可以被配置为控制信号，也可被配置为数据信号。在一些实施例中，GPIO接口可以用于连接处理器110与摄像头193，显示屏194，无线通信模块160，音频模块170，传感器模块180等。GPIO接口还可以被配置为I2C接口，I2S接口，UART接口，MIPI接口等。
USB接口130是符合USB标准规范的接口，具体可以是Mini USB接 口，Micro USB接口，USB Type C接口等。USB接口130可以用于连接充电器为终端100充电，也可以用于终端100与外围设备之间传输数据。也可以用于连接耳机，通过耳机播放音频。该接口还可以用于连接其他终端，例如AR设备等。
可以理解的是，本发明实施例示意的各模块间的接口连接关系，只是示意性说明，并不构成对终端100的结构限定。在本申请另一些实施例中，终端100也可以采用上述实施例中不同的接口连接方式，或多种接口连接方式的组合。
充电管理模块140用于从充电器接收充电输入。其中，充电器可以是无线充电器，也可以是有线充电器。在一些有线充电的实施例中，充电管理模块140可以通过USB接口130接收有线充电器的充电输入。在一些无线充电的实施例中，充电管理模块140可以通过终端100的无线充电线圈接收无线充电输入。充电管理模块140为电池142充电的同时，还可以通过电源管理模块141为终端供电。
电源管理模块141用于连接电池142，充电管理模块140与处理器110。电源管理模块141接收电池142和/或充电管理模块140的输入，为处理器110，内部存储器121，显示屏194，摄像头193，和无线通信模块160等供电。电源管理模块141还可以用于监测电池容量，电池循环次数，电池健康状态(漏电，阻抗)等参数。在其他一些实施例中，电源管理模块141也可以设置于处理器110中。在另一些实施例中，电源管理模块141和充电管理模块140也可以设置于同一个器件中。
终端100的无线通信功能可以通过天线1，天线2，移动通信模块150，无线通信模块160，调制解调处理器以及基带处理器等实现。
天线1和天线2用于发射和接收电磁波信号。终端100中的每个天线可用于覆盖单个或多个通信频带。不同的天线还可以复用，以提高天线的利用率。例如：可以将天线1复用为无线局域网的分集天线。在另外一些实施例中，天线可以和调谐开关结合使用。
移动通信模块150可以提供应用在终端100上的包括2G/3G/4G/5G等无线通信的解决方案。移动通信模块150可以包括至少一个滤波器，开关，功率放大器，低噪声放大器(low noise amplifier，LNA)等。移动通信模块150可以由天线1接收电磁波，并对接收的电磁波进行滤波，放大等处理，传送至调制解调处理器进行解调。移动通信模块150还可以对经调制解调处理器调制后的信号放大，经天线1转为电磁波辐射出去。在一些实施例中，移动通信模块150的至少部分功能模块可以被设置于处理器110中。在一些实施例中，移动通信模块150的至少部分功能模块可以与处理器110的至少部分模块被设置在同一个器件中。
调制解调处理器可以包括调制器和解调器。其中，调制器用于将待发 送的低频基带信号调制成中高频信号。解调器用于将接收的电磁波信号解调为低频基带信号。随后解调器将解调得到的低频基带信号传送至基带处理器处理。低频基带信号经基带处理器处理后，被传递给应用处理器。应用处理器通过音频设备(不限于扬声器170A，受话器170B等)输出声音信号，或通过显示屏194显示图像或视频。在一些实施例中，调制解调处理器可以是独立的器件。在另一些实施例中，调制解调处理器可以独立于处理器110，与移动通信模块150或其他功能模块设置在同一个器件中。
无线通信模块160可以提供应用在终端100上的包括无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，蓝牙(bluetooth，BT)，全球导航卫星系统(global navigation satellite system，GNSS)，调频(frequency modulation，FM)，近距离无线通信技术(near field communication，NFC)，红外技术(infrared，IR)等无线通信的解决方案。无线通信模块160可以是集成至少一个通信处理模块的一个或多个器件。无线通信模块160经由天线2接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到处理器110。无线通信模块160还可以从处理器110接收待发送的信号，对其进行调频，放大，经天线2转为电磁波辐射出去。
在一些实施例中，终端100的天线1和移动通信模块150耦合，天线2和无线通信模块160耦合，使得终端100可以通过无线通信技术与网络以及其他设备通信。所述无线通信技术可以包括全球移动通讯系统(global system for mobile communications，GSM)，通用分组无线服务(general packet radio service，GPRS)，码分多址接入(code division multiple access，CDMA)，宽带码分多址(wideband code division multiple access，WCDMA)，时分码分多址(time-division code division multiple access，TD-SCDMA)，长期演进(long term evolution，LTE)，BT，GNSS，WLAN，NFC，FM，和/或IR技术等。所述GNSS可以包括全球卫星定位系统(global positioning system，GPS)，全球导航卫星系统(global navigation satellite system，GLONASS)，北斗卫星导航系统(beidou navigation satellite system，BDS)，准天顶卫星系统(quasi-zenith satellite system，QZSS)和/或星基增强系统(satellite based augmentation systems，SBAS)，需要说明的是图中所示天线数量只是示例性的，还可以设置更多，例如3个、4个或者更多个。
终端100通过GPU，显示屏194，以及应用处理器等实现显示功能。GPU为图像处理的微处理器，连接显示屏194和应用处理器。GPU用于执行数学和几何计算，用于图形渲染。处理器110可包括一个或多个GPU，其执行程序指令以生成或改变显示信息。
显示屏194用于显示图像，视频等。显示屏194包括显示面板。显示 面板可以采用液晶显示屏(liquid crystal display，LCD)，有机发光二极管(organic light-emitting diode，OLED)，有源矩阵有机发光二极体或主动矩阵有机发光二极体(active-matrix organic light emitting diode的，AMOLED)，柔性发光二极管(flex light-emitting diode，FLED)，Miniled，MicroLed，Micro-oLed，量子点发光二极管(quantum dot light emitting diodes，QLED)等。在一些实施例中，终端100可以包括1个或N个显示屏194，N为大于1的正整数。
终端100可以通过ISP，摄像头193，视频编解码器，GPU，显示屏194以及应用处理器等实现拍摄功能。
ISP用于处理摄像头193反馈的数据。例如，拍照时，打开快门，光线通过镜头被传递到摄像头感光元件上，光信号转换为电信号，摄像头感光元件将所述电信号传递给ISP处理，转化为肉眼可见的图像。ISP还可以对图像的噪点，亮度，肤色进行算法优化。ISP还可以对拍摄场景的曝光，色温等参数优化。在一些实施例中，ISP可以设置在摄像头193中。
摄像头193用于捕获静态图像或视频。物体通过镜头生成光学图像投射到感光元件。感光元件可以是电荷耦合器件(charge coupled device，CCD)或互补金属氧化物半导体(complementary metal-oxide-semiconductor，CMOS)光电晶体管。感光元件把光信号转换成电信号，之后将电信号传递给ISP转换成数字图像信号。ISP将数字图像信号输出到DSP加工处理。DSP将数字图像信号转换成标准的RGB，YUV等格式的图像信号。在一些实施例中，终端100可以包括1个或N个摄像头193，N为大于1的正整数。
数字信号处理器用于处理数字信号，除了可以处理数字图像信号，还可以处理其他数字信号。例如，当终端100在频点选择时，数字信号处理器用于对频点能量进行傅里叶变换等。
视频编解码器用于对数字视频压缩或解压缩。终端100可以支持一种或多种视频编解码器。这样，终端100可以播放或录制多种编码格式的视频，例如：动态图像专家组(moving picture experts group，MPEG)1，MPEG2，MPEG3，MPEG4等。
NPU为神经网络(neural-network，NN)计算处理器，通过借鉴生物神经网络结构，例如借鉴人脑神经元之间传递模式，对输入信息快速处理，还可以不断的自学习。通过NPU可以实现终端100的智能认知等应用，例如：图像识别，人脸识别，语音识别，文本理解等。
外部存储器接口120可以用于连接外部存储卡，例如Micro SD卡，实现扩展终端100的存储能力。外部存储卡通过外部存储器接口120与处理器110通信，实现数据存储功能。例如将音乐，视频等文件保存在外部存储卡中。
内部存储器121可以用于存储计算机可执行程序代码，所述可执行程序代码包括指令。内部存储器121可以包括存储程序区和存储数据区。其中，存储程序区可存储操作系统，至少一个功能所需的应用程序(比如声音播放功能，图像播放功能等)等。存储数据区可存储终端100使用过程中所创建的数据(比如音频数据，电话本等)等。此外，内部存储器121可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件，闪存器件，通用闪存存储器(universal flash storage，UFS)等。处理器110通过运行存储在内部存储器121的指令，和/或存储在设置于处理器中的存储器的指令，执行终端100的各种功能应用以及数据处理。
终端100可以通过音频模块170，扬声器170A，受话器170B，麦克风170C，耳机接口170D，以及应用处理器等实现音频功能。例如音乐播放，录音等。
音频模块170用于将数字音频信息转换成模拟音频信号输出，也用于将模拟音频输入转换为数字音频信号。音频模块170还可以用于对音频信号编码和解码。在一些实施例中，音频模块170可以设置于处理器110中，或将音频模块170的部分功能模块设置于处理器110中。
扬声器170A，也称“喇叭”，用于将音频电信号转换为声音信号。终端100可以通过扬声器170A收听音乐，或收听免提通话。
受话器170B，也称“听筒”，用于将音频电信号转换成声音信号。当终端100接听电话或语音信息时，可以通过将受话器170B靠近人耳接听语音。
麦克风170C，也称“话筒”，“传声器”，用于将声音信号转换为电信号。当拨打电话或发送语音信息时，用户可以通过人嘴靠近麦克风170C发声，将声音信号输入到麦克风170C。终端100可以设置至少一个麦克风170C。在另一些实施例中，终端100可以设置两个麦克风170C，除了采集声音信号，还可以实现降噪功能。在另一些实施例中，终端100还可以设置三个，四个或更多麦克风170C，实现采集声音信号，降噪，还可以识别声音来源，实现定向录音功能等。
耳机接口170D用于连接有线耳机。耳机接口170D可以是USB接口130，也可以是3.5mm的开放移动终端平台(open mobile terminal platform，OMTP)标准接口，美国蜂窝电信工业协会(cellular telecommunications industry association of the USA，CTIA)标准接口。
压力传感器180A用于感受压力信号，可以将压力信号转换成电信号。在一些实施例中，压力传感器180A可以设置于显示屏194。压力传感器180A的种类很多，如电阻式压力传感器，电感式压力传感器，电容式压力 传感器等。电容式压力传感器可以是包括至少两个具有导电材料的平行板。当有力作用于压力传感器180A，电极之间的电容改变。终端100根据电容的变化确定压力的强度。当有触摸操作作用于显示屏194，终端100根据压力传感器180A检测所述触摸操作强度。终端100也可以根据压力传感器180A的检测信号计算触摸的位置。在一些实施例中，作用于相同触摸位置，但不同触摸操作强度的触摸操作，可以对应不同的操作指令。例如：当有触摸操作强度小于第一压力阈值的触摸操作作用于短消息应用图标时，执行查看短消息的指令。当有触摸操作强度大于或等于第一压力阈值的触摸操作作用于短消息应用图标时，执行新建短消息的指令。
陀螺仪传感器180B可以用于确定终端100的运动姿态。在一些实施例中，可以通过陀螺仪传感器180B确定终端100围绕三个轴(即，x，y和z轴)的角速度。陀螺仪传感器180B可以用于拍摄防抖。示例性的，当按下快门，陀螺仪传感器180B检测终端100抖动的角度，根据角度计算出镜头模组需要补偿的距离，让镜头通过反向运动抵消终端100的抖动，实现防抖。陀螺仪传感器180B还可以用于导航，体感游戏场景。
气压传感器180C用于测量气压。在一些实施例中，终端100通过气压传感器180C测得的气压值计算海拔高度，辅助定位和导航。
磁传感器180D包括霍尔传感器。终端100可以利用磁传感器180D检测翻盖皮套的开合。在一些实施例中，当终端100是翻盖机时，终端100可以根据磁传感器180D检测翻盖的开合。进而根据检测到的皮套的开合状态或翻盖的开合状态，设置翻盖自动解锁等特性。
加速度传感器180E可检测终端100在各个方向上(一般为三轴)加速度的大小。当终端100静止时可检测出重力的大小及方向。还可以用于识别终端姿态，应用于横竖屏切换，计步器等应用。
距离传感器180F，用于测量距离。终端100可以通过红外或激光测量距离。在一些实施例中，拍摄场景，终端100可以利用距离传感器180F测距以实现快速对焦。
接近光传感器180G可以包括例如发光二极管(LED)和光检测器，例如光电二极管。发光二极管可以是红外发光二极管。终端100通过发光二极管向外发射红外光。终端100使用光电二极管检测来自附近物体的红外反射光。当检测到充分的反射光时，可以确定终端100附近有物体。当检测到不充分的反射光时，终端100可以确定终端100附近没有物体。终端100可以利用接近光传感器180G检测用户手持终端100贴近耳朵通话，以便自动熄灭屏幕达到省电的目的。接近光传感器180G也可用于皮套模式，口袋模式自动解锁与锁屏。
环境光传感器180L用于感知环境光亮度。终端100可以根据感知的环境光亮度自适应调节显示屏194亮度。环境光传感器180L也可用于拍照时 自动调节白平衡。环境光传感器180L还可以与接近光传感器180G配合，检测终端100是否在口袋里，以防误触。
指纹传感器180H用于采集指纹。终端100可以利用采集的指纹特性实现指纹解锁，访问应用锁，指纹拍照，指纹接听来电等。
温度传感器180J用于检测温度。在一些实施例中，终端100利用温度传感器180J检测的温度，执行温度处理策略。例如，当温度传感器180J上报的温度超过阈值，终端100执行降低位于温度传感器180J附近的处理器的性能，以便降低功耗实施热保护。在另一些实施例中，当温度低于另一阈值时，终端100对电池142加热，以避免低温导致终端100异常关机。在其他一些实施例中，当温度低于又一阈值时，终端100对电池142的输出电压执行升压，以避免低温导致的异常关机。
触摸传感器180K，也称“触控器件”。触摸传感器180K可以设置于显示屏194，由触摸传感器180K与显示屏194组成触摸屏，也称“触控屏”。触摸传感器180K用于检测作用于其上或附近的触摸操作。触摸传感器可以将检测到的触摸操作传递给应用处理器，以确定触摸事件类型。可以通过显示屏194提供与触摸操作相关的视觉输出。在另一些实施例中，触摸传感器180K也可以设置于终端100的表面，与显示屏194所处的位置不同。
骨传导传感器180M可以获取振动信号。在一些实施例中，骨传导传感器180M可以获取人体声部振动骨块的振动信号。骨传导传感器180M也可以接触人体脉搏，接收血压跳动信号。在一些实施例中，骨传导传感器180M也可以设置于耳机中，结合成骨传导耳机。音频模块170可以基于所述骨传导传感器180M获取的声部振动骨块的振动信号，解析出语音信号，实现语音功能。应用处理器可以基于所述骨传导传感器180M获取的血压跳动信号解析心率信息，实现心率检测功能。
按键190包括开机键，音量键等。按键190可以是机械按键。也可以是触摸式按键。终端100可以接收按键输入，产生与终端100的用户设置以及功能控制有关的键信号输入。
马达191可以产生振动提示。马达191可以用于来电振动提示，也可以用于触摸振动反馈。例如，作用于不同应用(例如拍照，音频播放等)的触摸操作，可以对应不同的振动反馈效果。作用于显示屏194不同区域的触摸操作，马达191也可对应不同的振动反馈效果。不同的应用场景(例如：时间提醒，接收信息，闹钟，游戏等)也可以对应不同的振动反馈效果。触摸振动反馈效果还可以支持自定义。
指示器192可以是指示灯，可以用于指示充电状态，电量变化，也可以用于指示消息，未接来电，通知等。
SIM卡接口195用于连接SIM卡。SIM卡可以通过插入SIM卡接口195，或从SIM卡接口195拔出，实现和终端100的接触和分离。终端100可以支 持1个或N个SIM卡接口，N为大于1的正整数。SIM卡接口195可以支持Nano SIM卡，Micro SIM卡，SIM卡等。同一个SIM卡接口195可以同时插入多张卡。所述多张卡的类型可以相同，也可以不同。SIM卡接口195也可以兼容不同类型的SIM卡。SIM卡接口195也可以兼容外部存储卡。终端100通过SIM卡和网络交互，实现通话以及数据通信等功能。在一些实施例中，终端100采用eSIM，即：嵌入式SIM卡。eSIM卡可以嵌在终端100中，不能和终端100分离。
参见图2，具体涉及本申请一种显示方法的一个实施例的流程图，该方法可应用于上述终端100，该方法具体包括：
步骤202，终端检测到用户用于调节视场角的第一操作，响应于检测到的第一操作，确定第一摄像头的第一视场角。
在一个实施例中，该终端包括但不限于笔记本电脑、平板电脑、智能手机和智能家电等终端，终端包括至少一个摄像头，例如1个、2个、3个或者4个摄像头等。
在一个示例中，该终端的摄像头可以包括广角摄像头、主摄像头和长焦摄像头，每个摄像头可分别在不同的焦距范围内工作，例如，上述广角摄像头的焦距在0.6x-1x，主摄像头的工作焦距在1x-3x，长焦摄像头的工作焦距在3x以上，用户可以通过调节焦距来调节终端摄像头的视场角，终端检测到用户调节终端的视场角的动作时，终端的摄像头可基于各自工作的焦距范围相互切换。
在另一个示例中，该终端的设备的摄像头可仅包括广角摄像头和长焦摄像头，每个摄像头可分别在不同的焦距内工作。例如，广角摄像头在0.6x-3x工作，长焦摄像头在3x以上工作，用户可以通过调节终端用户界面的焦距来调节摄像头的视场角，上述终端检测到用户调节终端的视场角的动作时，终端的摄像头可基于各自工作的焦距范围相互切换。
需要说明的是，终端的摄像头中包括一个送显摄像头，该送显摄像头为将其获取的画面显示在终端的用户界面的摄像头，在用户界面显示的画面称为送显画面。送显摄像头可以基于用户调节摄像头焦距的动作进行切换。具体地，以终端的设备的摄像头包括广角摄像头、主摄像头和长焦摄像头为例，广角摄像头在0.6x-1x工作，主摄像头在1x-3x工作，长焦摄像头在3x以上工作，假设终端送显摄像头的工作焦距为10x，则送显摄像头为长焦摄像头，当用户将焦距调为0.8x时，送显摄像头由长焦摄像头切换为广角摄像头。
步骤202所示的第一摄像头对应于送显摄像头，第一视场角为第一摄像头所对应的视场角，即送显摄像头将获取的画面送显时所对应的视场角，其中，终端的第一摄像头的第一视场角的大小与其工作焦距大小相对 应，当终端检测到用户调节焦距的操作时，可以基于第一摄像头的工作焦距，确定第一摄像头的第一视场角。
参见图5A和图5B，以进一步地对送显摄像头进行解释和说明，图5A具体涉及本申请一个实施例提供的终端的送显摄像头将获取的画面进行送显的示意图；图5B为本申请另一实施例提供的终端的送显摄像头将获取的画面进行送显的示意图；
参见图5A，图5A所示终端包括第一摄像头C1和第二摄像头C2，其中第一摄像头为送显摄像头。第一摄像头C1和第二摄像头C2可以同时工作，由图5A可知，第二摄像头C2的视场角大于第一摄像头C1的视场角，两个摄像头的视场存在重叠，具体地，第一摄像头C1和第二摄像头C2同时打开并指向目标对象303。终端可以同时获取该第一摄像头C1在送显画面时的第一视场角下的亮度以及第二摄像头C2在预设第二视场角下的亮度，其中，该预设第二视场角指示第二摄像头C2在预设焦距下的视场角。由于第一摄像头C1为送显摄像头，则其获取的第一画面302A为显示给用户的画面。第二画面301A为第二摄像头在预设第二视场角下获取的画面。在一个示例中，假设第一摄像头C1为长焦摄像头，第二摄像头C2为主摄像头，该预设第二视场角为主摄像头在焦距为1x时的视场角，在该示例中，长焦摄像头为送显摄像头，即长焦摄像头所获取的第一画面302A为显示给用户的画面。
参见图5B，在另一个实施例中，所示终端包括一个第一摄像头C1，该第一摄像头C1为送显摄像头。需要说明的是，该第一摄像头在不同焦距对应的视场角下获取的画面的视场角的亮度可能不同，终端可同时获取该第一摄像头在第一视场角下的亮度以及该第一摄像头在预设第二视场角下的亮度。例如，该摄像头对目标对象303进行拍摄，第一画面302B为该摄像头在送显画面时的视场角下的画面，第二画面301B为该摄像头在预设第二视场角下的获取的画面。在一个实施例中，该第一摄像头C1为主摄像头，该预设第二视场角为主摄像头在焦距为1x时的视场角。
步骤204，终端基于第一视场角，获取第一摄像头在第一视场角下的第一亮度值，该第一亮度值为第一摄像头送显时所对应的视场角下的亮度值。
在确定第一视场角后，终端可以获取第一摄像头在第一视场角下的第一亮度值，上文已经示出，该第一视场角为送显摄像头的所对应的视场角，第一视场角下的光线通过第一摄像头的镜头被传递到该第一摄像头感光元件上，第一摄像头通过感光元件将接收到的光转换为光信号，并将光信号转换为电信号，然后，第一摄像头的感光元件将电信号传递给ISP处理，获得该第一亮度值。
步骤206，终端获取第二摄像头在预设第二视场角下的第二亮度值，该 预设第二视场角为第二摄像头在预设焦距下的视场角。
终端在可以同时获取上述第一摄像头在第一视场角下的第一亮度值以及第二摄像头在预设第二视场角的第二亮度值，第二摄像头在该在预设第二视场角的下的光线通过第二摄像头的镜头被传递到其感光元件上，第二摄像头的感光元件将光信号转换为电信号，并将电信号传递给上述ISP处理，然后获得该第二亮度值。
在另一个实施例中，终端可以同时获取第一摄像头在第一视场角下的第一亮度值和第一摄像头在预设第二视场角下的第二亮度值，该预设第二视场角为第一摄像头在预设焦距下的视场角。第一摄像头在送显画面时，光线通过第一摄像头的镜头被传递到摄像头整个感光元件上，感光元件所采集的像素包括第一视场角下的像素和预设第二视场角下的像素，并将第一视场角下的像素对应的光信号转换为第一电信号和预设第二视场角下的像素对应的光信号转换为第二电信号，摄像头感光元件将第一视场角下的像素对应的第一电信号和预设第二视场角下的第二像素对应的电信号传递给上述ISP处理，从而获得第一视场角下的第一亮度值和预设第二视场角下的第二亮度值。
步骤208，终端将第一亮度值和所述第二亮度值进行融合，获得融合亮度值。
在一个实施例中，终端可以获取的第一亮度值和获取的第二亮度值进行融合，获得融合亮度值，该融合亮度值用于显示第一摄像头获取的送显画面。
步骤210，终端显示所述摄像头在所述第一视场角下获取的预览画面，预览画面具有该融合亮度值。
本申请提供的显示方法以融合亮度值作为送显画面的亮度，从而避免摄像头测光不稳定。
下面参照图3，具体涉及本申请一个实施例中提供的获得的融合亮度值的方法的流程图。
步骤302，终端判断第一亮度值与第二亮度值的差值是否大于第一阈值，具体地，该第一阈值指示第一亮度值与第二亮度值之间的差异的大小，如果大于第一阈值，说明第一亮度值和第二亮度值的光的亮度差异较大，如果小于第一阈值则说明第一亮度值和第二亮度值的亮度差异较小。需要说明的是，该第一阈值为预设阈值，其大小可以根据需要设置。
上文已经示出，第一亮度值为第一摄像头在第一视场角下的亮度，第二亮度值为第二摄像头在预设第二视场角下的亮度值，或者第二亮度值为第一摄像头在预设第二视场角下的亮度值。通过上文可知，第一视场角与预设第二视场角下的画面有重合部分，由于第一亮度值与第二亮度值之间的亮度差异较大，用户调节视场角的操作时，终端很可能导致发生测光不 稳定的情况。
在一实施例中，如果第一亮度值与第二亮度值的差值小于或等于第一阈值(步骤3042)，即第一亮度值和第二亮度值的亮度差异较小，终端可以直接以第二亮度值作为融合亮度值，即以第二亮度值显示第一摄像头获取的画面。在该实施例中，由于第二亮度值为预设第二视场角下的亮度值，且预设第二视场角下为预设焦距下的视场角，第二亮度值更加稳定。而第一视场角会随着用户的调节视场角的动作而变化，第一亮度值也可能会变化。在第一亮度值和第二亮度值的亮度差异较小的情况下，直接以第二亮度值作为融合亮度值会使得测光更稳定。
参见附图4，具体涉及本申请一个实施例中提供的将第一亮度值和第二亮度值进行融合获得的融合亮度值的线形图。
参见图4所示的虚线指示直接以第一亮度值作为送显画面的显示亮度，即第一亮度值与第二亮度值不进行融合时的送显画面的亮度，实线指示本申请一个实施例提供的以融合亮度值作为送显画面的显示亮度。
示例性地，图4虚线中以第一亮度值作为送显画面的显示亮度时，第二摄像头在预设第二视场角的第二亮度值的大小为40，或者第一摄像头在预设第二视场角下的第二亮度值的大小为40，图4中虚线和实线的交点处指示了该第二亮度值的具体大小。
在步骤302中，如果第一亮度值与第二亮度值的差值小于或等于第一阈值，终端可以直接以第二亮度值作为融合亮度值，具体参见图4的第二部分d2。
步骤304，如果第一亮度值与第二亮度值的差值大于第一阈值，且第一亮度值大于第二亮度值，则获取第二差值(步骤3062)，该第二差值用于在第一亮度值的基础上，获得融合亮度值，需要说明的是，该第二差值可以根据第二亮度值的大小设定。示例性地，可根据需要，设定每个第二亮度值对应一个第二差值。
通过上文可知，第一视场角与预设第二视场角下的画面有重合部分，由于第一亮度值与第二亮度值之间的亮度差异较大，用户调节视场角的操作时，终端很可能导致发生测光不稳定的情况。本申请中，在步骤304所示的情况下，为了避免送显画面的亮度跳变过大，可以将第一亮度值减去第二差值，以获取融合亮度值，基于融合亮度值显示送显画面，以避免直接以第一亮度值显示送显画面时测光不稳定。
参见图4的第三部分d3中，所示虚线对应的第一亮度值和实线对应的融合亮度值之间的差值指示第二差值f2，此时，即本申请中以第一亮度值减去上述第二差值作为融合亮度值(步骤3082)，并以融合亮度值作为送显画面的亮度，从而使得测光更稳定。
步骤3061，如果第一亮度值与第二亮度值的差值大于第一阈值，且第 一亮度值小于第二亮度值，则获取第一差值，该第一差值用于在第一亮度值的基础上，获得融合亮度值。具体地，该第一差值用于补偿第一亮度值。需要说明的是，该第一差值f1可以根据第二亮度值的大小设定，具体地，可根据需要设定每个第一亮度值对应一个第一差值。
通过上文可知，第一视场角与预设第二视场角下的画面有重合部分，由于第一亮度值与第二亮度值之间的亮度差异较大，用户调节视场角的操作时，终端很可能导致发生测光不稳定的情况。本申请中，为了避免送显画面的亮度跳变过大，测光不稳定，可以将第一亮度值增加第一差值，以获取融合亮度值(步骤3081)，基于融合亮度值显示送显画面，以避免了直接以第一亮度值显示送显画面所产生的亮度跳变过大，从而造成测光不稳定。
参见图4，在第一部分d1中，虚线对应的第一亮度值和实线对应的融合亮度值之间的差值指示第一差值f1，在实线的第一部分d1中，当第一亮度值与第二亮度值的差异较大，且第一亮度值小于第二亮度值时，此时，本申请公开的方案中，以第一亮度值加上上述第一差值f1作为融合亮度值，以融合亮度值作为送显画面的亮度，从而避免摄像头测光不稳定。
可以理解的是，本申请实施例示出的获取融合亮度值的方法只是示例性地，还可以包括其他方法将第一亮度值和第二亮度值进行融合，以获得融合亮度值的方法，在此，不在赘述。
本申请实施例可以根据上述方法示例对上述终端等进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本发明实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请实施例各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理 解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：快闪存储器、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (12)

  1. 一种显示方法，应用于终端，其特征在于，所述终端包括至少一个摄像头，所述方法包括：
    检测到用户用于调节视场角的第一操作；
    响应于检测到的所述第一操作，确定第一视场角；
    基于所述第一视场角，获取所述摄像头在所述第一视场角下的第一亮度值；
    获取所述摄像头在预设第二视场角下的第二亮度值；
    将所述第一亮度值和所述第二亮度值进行融合，获得融合亮度值；
    显示所述摄像头在所述第一视场角下获取的预览画面，所述预览画面具有所述融合亮度值。
  2. 根据权利要求1所述的显示方法，其特征在于，所述摄像头包括第一摄像头和第二摄像头，所述获取所述摄像头在所述第一视场角下的第一亮度值，包括：
    获取所述第一摄像头在第一视场角下的第一亮度值；
    所述获取所述摄像头在预设第二视场角下的第二亮度值，包括：
    获取所述第二摄像头在预设第二视场角下的第二亮度值。
  3. 根据权利要求1所述的显示方法，其特征在于，所述摄像头包括第一摄像头，所述获取所述摄像头在所述第一视场角下的第一亮度值，包括：
    获取所述第一摄像头在第一视场角下的第一亮度值；
    所述获取所述摄像头在预设第二视场角下的第二亮度值，包括：
    获取所述第一摄像头在预设第二视场角下的第二亮度值。
  4. 根据权利要求1-3任一项所述的显示方法，其特征在于，所述将所述第一亮度值和所述第二亮度值进行融合，获得融合亮度值，包括：
    获取第一亮度值与第二亮度值的差值；
    判断所述差值是否大于第一阈值；
    如果所述差值小于或者等于第一阈值，则以所述第二亮度值作为融合亮度值；
    如果所述差值大于第一阈值，且所述第一亮度值小于所述第二亮度值，则将所述第一亮度值增加第一差值，以获得所述融合亮度值；
    如果所述差值大于第一阈值，且所述第一亮度值大于所述第二亮度值，则将所述第一亮度值减小第二差值，以获得所述融合亮度值；
    其中，所述第一差值和第二差值基于所述第二亮度值确定。
  5. 根据权利要求1-4任一项所述的显示方法，其特征在于，所述第二亮度值由所述摄像头在1倍焦距的视场角下获得。
  6. 一种终端，其特征在于，包括处理器和存储设备，所述存储设备存 有应用程序，所述应用程序由所述处理器运行时，使得所述终端执行以下步骤：
    检测到用户用于调节视场角的第一操作；
    响应于检测到的所述第一操作，确定第一视场角；
    基于所述第一视场角，获取所述摄像头在所述第一视场角下的第一亮度值；
    获取所述摄像头在预设第二视场角下的第二亮度值；
    将所述第一亮度值和所述第二亮度值进行融合，获得融合亮度值；
    显示所述摄像头在所述第一视场角下获取的预览画面，所述预览画面具有所述融合亮度值。
  7. 根据权利要求6所述的终端，其特征在于，所述摄像头包括第一摄像头和第二摄像头，所述应用程序由所述处理器运行时，使得所述终端执行所述获取所述摄像头在所述第一视场角下的第一亮度值的步骤，包括以下步骤：
    获取所述第一摄像头在第一视场角下的第一亮度值；
    所述应用程序由所述处理器运行时，使得所述终端执行所述获取所述摄像头在预设第二视场角下的第二亮度值的步骤
    获取所述第二摄像头在预设第二视场角下的第二亮度值。
  8. 根据权利要求6所述的终端，其特征在于，所述摄像头包括第一摄像头，所述应用程序由所述处理器运行时，使得所述终端执行所述获取所述摄像头在所述第一视场角下的第一亮度值的步骤，包括以下步骤：
    获取所述第一摄像头在第一视场角下的第一亮度值；
    所述应用程序由所述处理器运行时，使得所述终端执行所述获取所述摄像头在预设第二视场角下的第二亮度值的步骤，包括以下步骤：
    获取所述第一摄像头在预设第二视场角下的第二亮度值。
  9. 根据权利要求6所述的终端，其特征在于，所述应用程序由所述处理器运行时，使得所述终端执行所述将所述第一亮度值和所述第二亮度值进行融合，获得融合亮度值的步骤，包括以下步骤：
    获取第一亮度值与第二亮度值的差值；
    判断所述差值是否大于第一阈值；
    如果所述差值小于或者等于第一阈值，则以所述第二亮度值作为融合亮度值；
    如果所述差值大于第一阈值，且所述第一亮度值小于所述第二亮度值，则将所述第一亮度值增加第一差值，以获得所述融合亮度值；
    如果所述差值大于第一阈值，且所述第一亮度值大于所述第二亮度值，则将所述第一亮度值减小第二差值，以获得所述融合亮度值；
    其中，所述第一差值和第二差值基于所述第二亮度值确定。
  10. 根据权利要求7所述的终端，其特征在于，所述第二亮度值由所述摄像头在1倍焦距的视场角下获得。
  11. 一种计算机可读存储介质，其特征在于，包括计算机指令，当所述计算机指令在终端上运行时，使得所述终端执行如权利要求1-5中任一项所述显示方法。
  12. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求1-5中任一项所述显示方法。
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