WO2021179358A1 - 拍摄方法、存储介质及电子设备 - Google Patents

拍摄方法、存储介质及电子设备 Download PDF

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Publication number
WO2021179358A1
WO2021179358A1 PCT/CN2020/082062 CN2020082062W WO2021179358A1 WO 2021179358 A1 WO2021179358 A1 WO 2021179358A1 CN 2020082062 W CN2020082062 W CN 2020082062W WO 2021179358 A1 WO2021179358 A1 WO 2021179358A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal panel
camera module
brightness value
light
Prior art date
Application number
PCT/CN2020/082062
Other languages
English (en)
French (fr)
Inventor
杨波
罗光跃
Original Assignee
捷开通讯(深圳)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 捷开通讯(深圳)有限公司 filed Critical 捷开通讯(深圳)有限公司
Priority to US17/906,069 priority Critical patent/US11936990B2/en
Publication of WO2021179358A1 publication Critical patent/WO2021179358A1/zh

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • 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
    • H04N23/741—Circuitry for compensating brightness variation in the scene by increasing the dynamic range of the image compared to the dynamic range of the electronic image sensors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • 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
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/72—Combination of two or more compensation controls
    • 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
    • H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
    • 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
    • H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/157—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/01—Function characteristic transmissive
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/48—Variable attenuator
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/52—Details of telephonic subscriber devices including functional features of a camera

Definitions

  • This application relates to the technical field of electronic equipment, and in particular to a photographing method, device, storage medium, and electronic equipment.
  • HDR High Dynamic Range, high dynamic range
  • images present us a world full of infinite possibilities, which can represent the full visible dynamic range of the real world, and are mainly used for movies, special effects, 3D works and some high-end pictures. All brightness values in the real scene can be scaled and stored in the HDR image. Using this function, you can produce realistic blur and other lighting effects.
  • the embodiments of the present application provide a shooting method, device, storage medium, and electronic equipment, which can reduce the power consumption of the electronic equipment.
  • an embodiment of the present application provides a shooting method applied to an electronic device, the electronic device includes a display screen and a camera module, and the display screen includes a laminated liquid crystal panel, a backlight module, and electrochromic glass
  • the liquid crystal panel includes a display area for displaying information;
  • the backlight module is provided with an opening, and the opening is located in the display area and on the light exit path of the camera module;
  • the electrochromic glass is located on the side of the liquid crystal panel close to the backlight module, and the projection on the backlight module covers the opening;
  • the electrochromic glass When the camera module is working, the electrochromic glass is controlled to become transparent, and the external light sequentially passes through the liquid crystal panel, the openings and the transparent electrochromic glass, and then enters the camera module. Smooth; the method includes:
  • a second image acquisition is performed on the current scene through the camera module to obtain a target image.
  • the embodiments of the present application also provide a photographing device, which is applied to an electronic device, the electronic device includes a display screen and a camera module, and the display screen includes a stacked liquid crystal panel, a backlight module, and an electrochromic Glass, the liquid crystal panel includes a display area for displaying information; the backlight module is provided with an opening, the opening is located in the display area and on the light exit path of the camera module; The electrochromic glass is located on the side of the liquid crystal panel close to the backlight module, and the projection on the backlight module covers the opening;
  • the device includes:
  • the first acquisition unit is configured to perform the first image acquisition of the current scene through the camera module to obtain a reference image
  • An analysis unit configured to analyze the reference image to obtain brightness distribution information of the reference image
  • An adjusting unit configured to adjust the current transmittance of the liquid crystal panel according to the brightness distribution information
  • the second acquisition unit is configured to perform a second image acquisition of the current scene through the camera module to obtain a target image.
  • an embodiment of the present application also provides a computer-readable storage medium in which a plurality of instructions are stored, and the instructions are suitable for being loaded by a processor to execute the above-mentioned shooting method.
  • an embodiment of the present application also provides an electronic device, including a processor and a memory, the processor is electrically connected to the memory, the memory is used to store instructions and data; the processor is used to execute the above The shooting method described.
  • the embodiments of the present application provide a shooting method, device, storage medium, and electronic equipment, which can reduce the power consumption of the electronic equipment.
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the application.
  • FIG. 2 is a schematic structural diagram of a display screen assembly provided by an embodiment of the application.
  • FIG. 3 is a schematic plan view of a display screen in a display screen assembly provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of another structure of an electronic device provided by an embodiment of the application.
  • FIG. 5 is a schematic flowchart of a shooting method provided by an embodiment of the application.
  • FIG. 6 is an application scenario intention of the shooting method provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of a state of the liquid crystal panel provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of another state of the liquid crystal panel provided by the embodiment of the application.
  • FIG. 9 is a schematic structural diagram of a photographing device provided by an embodiment of the application.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, “multiple” means two or more than two, unless otherwise specifically defined.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be mechanically connected, or electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relation.
  • an intermediate medium it can be the internal communication of two components or the interaction of two components relation.
  • the "on" or “under” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • the embodiment of the present application provides an electronic device.
  • the electronic device may be a device such as a smart phone or a tablet computer.
  • the electronic device 100 includes a cover plate 10, a display screen assembly 20, a circuit board 30 and a housing 40.
  • the cover plate 10 is installed on the display screen assembly 20 to cover the display screen assembly 20.
  • the cover plate 10 may be a transparent glass cover plate.
  • the cover plate 10 may be a glass cover plate made of materials such as sapphire.
  • the display screen assembly 20 is installed on the housing 40 to form the display surface of the electronic device 100.
  • the display screen assembly 20 serves as the front shell of the electronic device 100 and forms a closed space with the housing 40 for accommodating other electronic components of the electronic device 100.
  • the display screen assembly 20 forms the display surface of the electronic device 100 for displaying information such as images and texts.
  • the circuit board 30 is installed inside the housing 40 to accommodate the circuit board 30 in the above-mentioned closed space.
  • the circuit board 30 may be the main board of the electronic device 100.
  • the circuit board 30 is provided with a grounding point to realize the grounding of the circuit board 30.
  • the circuit board 30 may be integrated with functional components such as cameras, sensors, and processors.
  • the display screen assembly 20 may be electrically connected to the circuit board 30.
  • the circuit board 30 is provided with a display control circuit.
  • the display control circuit outputs electrical signals to the display screen assembly 20 to control the display screen assembly 20 to display information.
  • the housing 40 is used to form the outer contour of the electronic device 100.
  • the material of the housing 40 can be plastic or metal.
  • the housing 40 may be integrally formed.
  • the housing 40 may be composed of a single component or a plurality of components that can be assembled. As shown in the figure, the housing 40 may include a side wall surface and a back surface connected to the side wall surface.
  • the housing 40 is made of at least one of a plastic material, a ceramic material, and a metal material.
  • the liquid crystal panel 211 may be contained in the housing 40.
  • the display screen assembly 20 includes a display screen 21 and a camera module 22.
  • the display screen 21 includes a liquid crystal panel 211, a backlight module 212, and an electrochromic module 213 that are stacked.
  • the liquid crystal panel 211 and the backlight module 212 are stacked.
  • the liquid crystal panel 211 may include an upper polarizer, a color filter, a liquid crystal, a TFT (Thin Film Transistor, thin film transistor) substrate, and a lower polarizer that are sequentially stacked and arranged to display images, text, and other information.
  • the backlight module 212 is used to provide a light source for the liquid crystal panel 211 to display information.
  • the liquid crystal panel 21 includes a display area and a non-display area.
  • the display area performs the display function of the liquid crystal panel for displaying information. No information is displayed in the non-display area.
  • the liquid crystal panel 211 may include a plurality of non-display areas spaced apart from each other. For example, continuing to refer to FIG. 1, non-display areas are respectively provided on the top and bottom of the liquid crystal panel 211.
  • the non-display area 215 can be used to set functional components such as a receiver and a fingerprint module.
  • the liquid crystal panel 211 itself does not emit light, but is illuminated by the backlight module 212 below it.
  • the backlight module 212 may be composed of a light source, a light guide plate, a reflective sheet, and an optical film.
  • the light will first pass through the lower polarizer of the liquid crystal panel 211 and pass upward, and different liquid crystal panels 211 will change the polarization direction of the light according to its own mechanism at this time.
  • the light touches the color filter to produce color, and finally enters the upper polarizer. After the polarization direction is changed by the liquid crystal, part of the light can be emitted, and part of it will be absorbed.
  • Each pixel on the entire liquid crystal panel 211 can respectively determine the intensity of the emitted light, thereby generating an image.
  • the backlight module 212 is provided with an opening 214, and the opening 214 corresponds to the display area of the liquid crystal panel 211 and is located on the light exit path of the camera module 22.
  • the opening 214 allows signals such as light signals and acoustic signals to pass through.
  • the electrochromic module 213 is located on the side of the liquid crystal panel 211 close to the backlight module 212, and the projection on the backlight module 212 covers the opening 214, that is, the electrochromic module 213 is also located On the light exit path of the camera module 22.
  • the electrochromic module 213 in this embodiment at least includes electrochromic glass, and the electrochromic glass can be switched between the atomized state and the transparent state through voltage regulation.
  • the camera module 22 can be arranged in the display area of the display screen 21, so that the electronic device 100 does not need to provide additional non-display area digging holes to place the camera module 22 to achieve hiding As a result, the screen-to-body ratio of the electronic device 100 is increased.
  • the camera module 22 may be arranged on the side of the display screen 21 with the electrochromic module 213 and connected to the circuit board 30.
  • the electrochromic module 213 may include an electrochromic layer 2131 and a light source 2132 disposed at both ends of the point-to-color layer 2131.
  • the electrochromic layer 2131 may be electrochromic glass
  • the light source 2132 may be an LED (Light Emitting Diode, light emitting diode) lamp.
  • the electrochromic layer 2131 can be made transparent by voltage regulation, so that external light can pass through the liquid crystal panel 211, the opening 214, and the transparent electrochromic layer 2131 in sequence, and then enter the camera module 22 The light entrance surface.
  • the electrochromic layer 2131 can be atomized by voltage regulation, and the light source 2132 can be turned on to irradiate the atomized electrochromic layer 2131, so that light enters the atomized electrochromic layer 2131.
  • the refraction is used as a backlight at the opening 214.
  • the electrochromic module 213 needs to be located on the light exit path of the camera module 22, so that the transparency of the electrochromic module 213 can be adjusted to control the light emitted by the camera module 22.
  • a plurality of fixing members are provided on the edge of the opening 214, and the electrochromic module 213 is fixedly connected to the backlight module 212 through the fixing members.
  • the fixing member may be a part of the backlight module 212, and the electrochromic module 213 is engaged with the backlight module 212 to make the electrochromic module 213 fixed on the backlight module 212 to form a overall.
  • a fixing bracket may be installed on the circuit board 30 or the backlight module 212, and the electrochromic module 213 may be fixed on the light exit path of the camera module 22 through the fixing bracket.
  • the opening 214 is a round hole. In some other embodiments, the opening 214 may also be a square hole, an elliptical hole, or other shapes of holes.
  • the electrochromic glass in the electrochromic module 213 can be round, square, elliptical, and so on.
  • This embodiment provides a shooting method, which is applied to the above-mentioned electronic device.
  • the specific process of the method is as follows:
  • the current scene can be photographed using the default photographing parameters of the camera module in the electronic device, so that a frame of normally exposed image is collected as a reference image (refer to the illustration a in FIG. 6).
  • the shooting parameters used such as shutter, aperture, ISO, EV value and so on.
  • HSV Human Saturation Value (hexagonal pyramid model) spatially detects the brightness of each pixel in the reference image.
  • HSV Hue Saturation Value (hexagonal pyramid model) spatially detects the brightness of each pixel in the reference image.
  • HSV Hue Saturation Value (hexagonal pyramid model) spatially detects the brightness of each pixel in the reference image.
  • HSV Hue Saturation Value (hexagonal pyramid model) spatially detects the brightness of each pixel in the reference image.
  • H hue
  • S saturation
  • V brightness
  • the value of the brightness V ranges from 0 (black) to 255 (white).
  • the reference image is in the RGB format
  • the RGB format is converted to the HSV format, and the V component of the reference image is extracted, and the V component is the brightness component.
  • the extracted V component of each pixel may correspond to the position of each pixel, so that the brightness distribution information can be displayed in the form of a brightness distribution map (refer to the illustration b in FIG. 6).
  • the liquid crystal panel has an adjustable light transmittance.
  • the light transmittance of the liquid crystal panel in the camera area can be set according to the brightness distribution information.
  • the liquid crystal panel may include a transparent upper substrate 211a, a liquid crystal layer 211c, and a transparent lower substrate 211b.
  • the upper substrate 211a, the liquid crystal layer 211c, and the lower substrate 211b are stacked in sequence.
  • the upper substrate 211a and the lower substrate 211b may be made of indium tin oxide (ITO), which is a conductive material.
  • ITO indium tin oxide
  • the camera module When the camera module is working, it can drive the liquid crystal molecules in the liquid crystal layer 213c to be arranged in an orderly manner, so that the liquid crystal panel forms a light transmission area with a certain light transmittance, so that the external light passes through the liquid crystal panel, the opening and the liquid crystal panel in sequence , Into the light-incident surface of the camera module.
  • the brightness distribution information may include the brightness value of each pixel in the reference image.
  • the following steps may be included:
  • the liquid crystal panel includes a plurality of light-transmitting regions.
  • the step of "adjusting the current transmittance of the liquid crystal panel according to the brightness value of each pixel and the mapping relationship" can specifically include the following processes:
  • the light transmittance distribution diagram required for the configuration of the liquid crystal panel can be simulated and drawn according to the relevant algorithm (refer to the diagram c in Figure 6 ). Then, based on the obtained light transmittance distribution map, the required light transmittance adjustment parameters corresponding to each position point are calculated. Finally, the light transmittance of the corresponding light-transmitting area is adjusted based on the light transmittance adjustment parameter.
  • the light transmittance of each location point decreases as the brightness of the shooting area corresponding to that location point increases. Continuing to refer to the diagram in FIG. 6, black indicates low transmittance, and white indicates high transmittance.
  • the position layout of each reference position point in the corresponding light transmission area can be specifically determined, and then the layout is based on the position.
  • the weight information corresponding to each reference location point is determined, and then the brightness value corresponding to each reference location point in each location point set is obtained. Finally, based on the weight information, weighting is performed on the brightness value corresponding to each reference position point to obtain the target brightness value, and the target brightness value is processed according to a preset rule, so as to obtain the corresponding light transmittance adjustment parameter.
  • the light transmittance adjustment parameter may specifically be the deflection angle of the liquid crystal molecules in the liquid crystal layer.
  • the step of "adjusting the current transmittance of the liquid crystal panel according to the brightness distribution information” may include the following process:
  • the electrical signal parameter can be a voltage value or a current value.
  • the exposure required for each pixel can be determined based on the brightness difference between the brightness value of each pixel and the brightness value of surrounding pixels in the brightness distribution information, and the actual brightness of each pixel.
  • the required light transmittance of the pixel point corresponding to the position on the liquid crystal panel is determined.
  • the current required electrical signal parameters are determined.
  • corresponding voltages are applied to the upper substrate and the lower substrate to drive the liquid crystal molecules in the liquid crystal layer to deflect and adjust the light transmittance.
  • the second image acquisition of the current scene when the second image acquisition of the current scene is performed through the camera module, it may specifically include:
  • (33) Drive the camera module based on the exposure parameters to perform a second image acquisition of the current scene to obtain the target image.
  • the module determines the target area (that is, the dark area) whose brightness value is lower than the preset value in the current preview image, and then determine the required exposure parameters according to the actual brightness value of the target area, and drive the camera based on the exposure parameters
  • the module performs a second image acquisition on the current scene to obtain the target image.
  • you can adjust the exposure parameters increase ISO and extend the exposure time) until the dark part is properly exposed, and the resulting HDR image (refer to d in Figure 6).
  • the shooting method provided in this embodiment is to open a hole on the backlight module, arrange the electrochromic glass at the opening, and arrange the electrochromic glass on the light exit path of the camera module.
  • the electrochromic glass is controlled to become transparent, and the external light enters the light-incident surface of the camera module after sequentially passing through the liquid crystal panel, the opening and the transparent electrochromic glass.
  • HDR images need to be taken, the current scene is captured by the camera module, and the collected images are analyzed to obtain brightness distribution information, and then adjust the light transmittance of the LCD panel according to the brightness distribution information, and finally pass the camera module Perform secondary image acquisition to obtain the target image.
  • This solution reduces the number of exposures during the acquisition of HDR images, and only requires two exposures to obtain HDR images, which can reduce the power consumption of electronic devices; in addition, only need to adjust the light transmittance of the LCD panel and then shoot to obtain HDR images. Synthesize multiple exposed images to obtain HDR images, which reduces the difficulty of image processing.
  • a photographing device which may be integrated in an electronic device in the form of software or hardware, and the electronic device may be the electronic device described above.
  • the electronic device may include a display screen and a camera module, the display screen includes a laminated liquid crystal panel, a backlight module, and electrochromic glass, and the liquid crystal panel includes a display area for displaying information;
  • the backlight module is provided with an opening, the opening is located in the display area and is located on the light exit path of the camera module;
  • the electrochromic glass is located on the liquid crystal panel near the backlight module One side, and the projection on the backlight module covers the opening.
  • the photographing device 300 may include: a first collection unit 301, an analysis unit 302, an adjustment unit 303, and a second collection unit 304. as follows:
  • the first collection unit 301 is configured to perform the first image collection of the current scene through the camera module to obtain a reference image
  • the analysis unit 302 is configured to analyze the reference image to obtain brightness distribution information of the reference image
  • the adjusting unit 303 is configured to adjust the current transmittance of the liquid crystal panel according to the brightness distribution information
  • the second acquisition unit 304 is configured to perform a second image acquisition of the current scene through the camera module to obtain a target image.
  • the brightness distribution information includes the brightness value of each pixel in the reference image; the adjustment unit 303 can be used to:
  • the current transmittance of the liquid crystal panel is adjusted.
  • the liquid crystal panel includes a plurality of light-transmitting regions.
  • the adjusting unit 303 may be specifically used to:
  • the light transmittance of the corresponding light transmission area is adjusted based on the light transmittance adjustment parameter.
  • the adjustment unit 303 when determining the corresponding light transmittance adjustment parameter according to the set of position points and the mapping relationship, the adjustment unit 303 may be further configured to:
  • the target brightness value is processed according to the preset rule to obtain the corresponding light transmittance adjustment parameter.
  • the light transmittance decreases as the target brightness value increases.
  • the liquid crystal panel includes a transparent upper substrate, a liquid crystal layer, and a transparent lower substrate, and the upper substrate, the liquid crystal layer, and the lower substrate are stacked in sequence.
  • the adjusting unit can be used to:
  • corresponding voltages are applied to the upper substrate and the lower substrate to drive the liquid crystal molecules in the liquid crystal layer to deflect and adjust the light transmittance.
  • the second collection unit can be used to:
  • the camera module is driven to perform a second image acquisition of the current scene to obtain a target image.
  • the photographing device opens a hole on the backlight module, arranges electrochromic glass at the hole, and arranges the electrochromic glass on the light exit path of the camera module.
  • the electrochromic glass is controlled to become transparent, and external light sequentially passes through the liquid crystal panel, the opening and the transparent electrochromic glass, and then enters the light-incident surface of the camera module.
  • HDR images need to be taken, the current scene is captured by the camera module, and the collected images are analyzed to obtain brightness distribution information, and then adjust the light transmittance of the LCD panel according to the brightness distribution information, and finally pass the camera module Perform secondary image acquisition to obtain the target image.
  • This solution can reduce the power consumption of electronic devices by reducing the number of exposures when acquiring HDR images; in addition, it is only necessary to adjust the light transmittance of the LCD panel and then shoot to obtain HDR images, instead of synthesizing multiple exposure images to obtain HDR images. Reduce the difficulty of image processing.

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Abstract

一种拍摄方法、存储介质及电子设备（100）。电子设备（100）包括显示屏（21）和摄像头模组（22），该显示屏（21）包括层叠设置的液晶面板（211）、背光模组（212）和电致变色玻璃（213）。当需拍摄HDR图像时，通过摄像头模组（22）对当前场景进行图像采集，并对采集到的图像进行分析，然后根据亮度分布信息调节液晶面板（211）的透光率，最后通过摄像头模组（22）进行二次图像采集，得到目标图像。

Description

拍摄方法、存储介质及电子设备
本申请要求于2020年03月10日提交中国专利局、申请号为202010161092.7、发明名称为“拍摄方法、装置、存储介质及电子设备”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
本申请涉及电子设备技术领域，特别涉及一种拍摄方法、装置、存储介质及电子设备。
 背景技术
HDR（High Dynamic Range，高动态范围）图像为我们呈现了一个充满无限可能的世界，能够表示现实世界的全部可视动态范围，主要用于影片、特殊效果、3D作品及某些高端图片。HDR图像中可按比例表示和存储真实场景中的所有明亮度值。利用此功能，可以产生逼真的模糊及其它光照效果。
然而，目前日常的HDR图像拍摄中，需要通过多次曝光后合成多张图像来得到HDR图像，导致电子设备功耗较大。
 技术问题
本申请实施例提供一种拍摄方法、装置、存储介质及电子设备，可以降低电子设备功耗。
 技术解决方案
第一方面，本申请实施例提供一种拍摄方法，应用于电子设备，所述电子设备包括显示屏和摄像头模组，所述显示屏包括层叠设置的液晶面板、背光模组和电致变色玻璃，所述液晶面板包括具有用于显示信息的显示区域；所述背光模组上设置有开孔，所述开孔位于所述显示区域内，且位于所述摄像头模组的出光路径上；所述电致变色玻璃位于所述液晶面板靠近所述背光模组的一侧，且在所述背光模组上的投影覆盖所述开孔；
当所述摄像头模组工作时，控制所述电致变色玻璃变透明，外界光线依次经过所述液晶面板、所述开孔及变透明的电致变色玻璃后，进入所述摄像头模组的入光面；所述方法包括：
通过所述摄像头模组对当前场景进行第一次图像采集，得到参考图像；
对所述参考图像进行分析，得到所述参考图像的亮度分布信息；
根据所述亮度分布信息调节当前所述液晶面板的透光率；
通过所述摄像头模组对当前场景进行第二次图像采集，得到目标图像。
第二方面，本申请实施例还提供一种拍摄装置，应用于电子设备，所述电子设备包括显示屏和摄像头模组，所述显示屏包括层叠设置的液晶面板、背光模组和电致变色玻璃，所述液晶面板包括具有用于显示信息的显示区域；所述背光模组上设置有开孔，所述开孔位于所述显示区域内，且位于所述摄像头模组的出光路径上；所述电致变色玻璃位于所述液晶面板靠近所述背光模组的一侧，且在所述背光模组上的投影覆盖所述开孔；
当所述摄像头模组工作时，控制所述电致变色玻璃变透明，外界光线依次经过所述液晶面板、所述开孔及变透明的电致变色玻璃后，进入所述摄像头模组的入光面；所述装置包括：
第一采集单元，用于通过所述摄像头模组对当前场景进行第一次图像采集，得到参考图像；
分析单元，用于对所述参考图像进行分析，得到所述参考图像的亮度分布信息；
调节单元，用于根据所述亮度分布信息调节当前所述液晶面板的透光率；
第二采集单元，用于通过所述摄像头模组对当前场景进行第二次图像采集，得到目标图像。
第三方面，本申请实施例还提供一种计算机可读存储介质，所述存储介质中存储有多条指令，所述指令适于由处理器加载以执行如上所述的拍摄方法。
第四方面，本申请实施例还提供一种电子设备，包括处理器及存储器，所述处理器与所述存储器电性连接，所述存储器用于存储指令和数据；所述处理器用于执行如上所述的拍摄方法。
 有益效果
本申请实施例提供一种拍摄方法、装置、存储介质及电子设备，可以降低电子设备功耗。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的电子设备的结构示意图。
图2为本申请实施例提供的显示屏组件的结构示意图。
图3为本申请实施例提供的显示屏组件中的显示屏的平面示意图。
图4为本申请实施例提供的电子设备的另一结构示意图。
图5为本申请实施例提供的拍摄方法的流程示意图。
图6为本申请实施例提供的拍摄方法的应用场景意图。
图7为本申请实施例提供的液晶面板的一状态示意图。
图8为本申请实施例提供的液晶面板的另一状态示意图。
图9为本申请实施例提供的拍摄装置的结构示意图。
 本发明的实施方式
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清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，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所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
本申请实施例提供一种电子设备。该电子设备可以是智能手机、平板电脑等设备。参考图1，电子设备100包括盖板10、显示屏组件20、电路板30以及壳体40。
其中，盖板10安装到显示屏组件20上，以覆盖显示屏组件20。盖板10可以为透明玻璃盖板。在一些实施例中，盖板10可以是用诸如蓝宝石等材料制成的玻璃盖板。
显示屏组件20安装在壳体40上，以形成电子设备100的显示面。显示屏组件20作为电子设备100的前壳，与壳体40形成一封闭空间，用于容纳电子设备100的其他电子元件。同时，显示屏组件20形成电子设备100的显示面，用于显示图像、文本等信息。
电路板30安装在壳体40内部，以将电路板30收容在上述封闭空间内。电路板30可以为电子设备100的主板。电路板30上设置有接地点，以实现电路板30的接地。电路板30上可以集成有摄像头、传感器、处理器等功能组件。同时，显示屏组件20可以电连接至电路板30。
在一些实施例中，电路板30上设置有显示控制电路。该显示控制电路向显示屏组件20输出电信号，以控制显示屏组件20显示信息。
壳体40用于形成电子设备100的外部轮廓。壳体40的材质可以为塑料或金属。壳体40可以一体成型。
另外，壳体40可由单个构件或可组装的多个构件组成。如图，壳体40可以包括侧壁面以及与侧壁面连接的背面。壳体40由塑料材料、陶瓷材料和金属材料中的至少一种材料制作而成。在一些实施方式中，液晶面板211可容纳在壳体40中.
本申请实施例中，如图2所示，显示屏组件20包括显示屏21和摄像头模组22。其中，显示屏21包括层叠设置的液晶面板211、背光模组212和电致变色模组213。液晶面板211和所述背光模组212层叠设置。液晶面板211可以包括依次层叠设置的上偏光片、彩色滤光片、液晶、TFT（Thin Film Transistor，薄膜晶体管)基板及下偏光片，用于显示图像、文本等信息。背光模组212用于为液晶面板211显示信息而提供光源。
在一些实施例中，液晶面板21包括显示区域和非显示区域。其中，显示区域执行液晶面板的显示功能，用于显示信息。非显示区域不显示信息。液晶面板211可以包括多个彼此间隔的非显示区域。例如，继续参考图1，在液晶面板211的顶部和底部分别设置有非显示区域。非显示区域215可以用于设置受话器、指纹模组等功能组件。
液晶面板211本身并不发光，而是由其下方的背光模组212照亮的。背光模组212可以由光源、导光板、反射片、光学膜片构成。其发出的光线照射到液晶面板211上时，光线会先通过液晶面板211的下偏光片向上透出，不同的液晶面板211这个时候会按照自己的机理将光线转变偏振方向。接下来光线接触到彩色滤光片产生颜色，最后入射到上偏光片。在被液晶转变偏振方向后，有部分光线可以出射，有部分会被吸收。整个液晶面板211上每一个像素都可以分别决定出射光线的强度，从而产生图像。
继续参考图2，在本实施例中，背光模组212上设置有开孔214，且开孔214对应在液晶面板211的显示区域内，且位于摄像头模组22的出光路径上。该开孔214允许光信号、声波信号等信号通过。电致变色模组213位于所述液晶面板211靠近所述背光模组212的一侧，且在所述背光模组212上的投影覆盖所述开孔214，即电致变色模组213也位于摄像头模组22的出光路径上。需要说明的是，本实施例中该电致变色模组213至少包括电致变色玻璃，通过电压调控可实现电致变色玻璃在雾化状态和透明状态之间的转换。
参考图4，在本实施例中，摄像头模组22可设置在显示屏21的显示区域内，以使得该电子设备100无需提供额外的非显示区域挖孔以放置该摄像头模组22，达到隐藏效果，提升电子设备100的屏占比。具体的，摄像头模组22可设置在显示屏21具有电致变色模组213的一侧，并连接在电路板30上。
参考图3，在一些实施例中，该电致变色模组213可以包括电致变色层2131、以及设置在点致电色层2131两端的光源2132。实际应用中，该电致变色层2131可为电致变色玻璃，光源2132可以为LED（Light Emitting Diode，发光二极管）灯。当摄像头模组22工作时，可通过电压调控使电致变色层2131变透明，以使外界光线可依次经过液晶面板211、开孔214及透明的电致变色层2131后，进入摄像头模组22的入光面。当摄像头模组22停止工作时，可通过电压调控使电致变色层2131雾化，并开启光源2132照射雾化后的电致变色层2131，使光线进入雾化后的电致变色层2131发生折射以作为开孔214处的背光源使用。
继续参考图2，电致变色模组213需设置位于所述摄像头模组22的出光路径上，以使可通过对该电致变色模组213的透明度调控，实现控制摄像头模组22发射的光信号、或从外界进入到电子设备100内部的光信号。
在一些实施例中，开孔214边缘设置有多个固定件，所述电致变色模组213通过所述固定件与所述背光模组212固定连接。实际应用中，该固定件可以是背光模组212的一部分，通过电致变色模组213与背光模组212配合卡接，以使电致变色模组213固定在背光模组212上，形成一整体。
在一些实施方式中，还可以在电路板30上或背光模组212上安装固定支架，通过固定支架将该电致变色模组213固定在摄像头模组22的出光路径上。
在一些实施例中，开孔214为圆孔。在其他一些实施例中，开孔214也可以为方孔、椭圆孔等其他形状的孔。相应的，电致变色模组213中的电致变色玻璃可以为圆状、方状、椭圆状等等。
本实施例提供一种拍摄方法，应用于上述电子设备。参考图5，该方法具体流程如下：
101、通过摄像头模组对当前场景进行第一次图像采集，得到参考图像。
具体的，可以通过电子设备中摄像头模组的默认拍摄参数对当前场景进行拍摄，从而采集到一帧正常曝光的图像，作为参考图像（参考图6中a图示）。其中，所使用到的拍摄参数诸如快门、光圈、ISO、EV值等。
102、对参考图像进行分析，得到参考图像的亮度分布信息。
具体的，可以采用HSV（Hue Saturation Value，六角锥体模型）空间检测该参考图像中每一像素点的亮度。例如，HSV 是颜色的直观特性的一种颜色空间模型，这个模型中颜色参数分别是色调(H)、 饱和度(S)和亮度(V)。其中，亮度V取值范围为0(黑色)～255(白色)。在该参考图像为RGB 格式的情况下，将RGB格式转化为HSV格式，提取出该参考图像的V分量，该V 分量即为亮度分量。
实际应用中，可以将提取出来的各个像素的V分量和各个像素的位置为对应，以使该亮度分布信息可以一张亮度分布图（参考图6中b图示）的形式展现。
103、根据亮度分布信息调节当前液晶面板的透光率。
在本实施例中，该液晶面板为透光率可调。具体实施时，可根据亮度分布信息置摄像头区域液晶面板的透光率。
在一些实施例中，参考图7和图8，液晶面板可以包括透明的上层基板211a、液晶层211c和透明的下层基板211b，上层基板211a、液晶层211c和下层基板211b依次层叠设置。实际应用中，该上层基板211a和下层基板211b可以由可导电的材料氧化铟锡（ITO）制作而成。
当摄像头模组工作时，可驱动液晶层213c中的液晶分子有序排列，使该液晶面板形成具有一定透光率的透光区，以使外界光线依次经过液晶面板、开孔及液晶面板后，进入摄像头模组的入光面。
如图8所示，在启动摄像头模组工作时，可以给上层基板211a和下层基板211b供电，以驱动液晶层211c中的液晶分子有序的排列从而让光线可以垂直的透过导光部件进入摄像头模组的入光面。
在一些实施例中，亮度分布信息可以包括参考图像中每一像素点的亮度值。在根据亮度分布信息调节当前液晶面板的透光率时，可以包括以下步骤：
（11）确定每一像素点投影在液晶面板上的位置点，得到像素点与位置点之间的映射关系；
（21）根据每一像素点的亮度值、及所述映射关系，对当前所述液晶面板的透光率进行调节。
在一些实施中，液晶面板包括多个透光区。步骤“根据每一像素点的亮度值、及映射关系，对当前液晶面板的透光率进行调节”，具体可以包括以下流程：
（211）确定每一透光区包含的参考位置点，得到各透光区对应的位置点集合；
（212）根据该位置点集合、及该映射关系，确定对应的透光率调节参数；
（213）基于该透光率调节参数对相应透光区的透光率进行调节。
具体的，可基于像素点与位置点之间的映射关系，结合每一像素点的亮度值，按照相关算法模拟绘制液晶面板所需配置成的透光率分布图（参考图6中c图示）。然后，基于得到的透光率分布图，推算出各个位置点对应所需的透光率调节参数。最后，基于该透光率调节参数对相应透光区的透光率进行调节。实际应用中，每一位置点的透光率随该位置点点对应拍摄区域亮度增加而减少。继续参考图6中图示，黑色表示低透过率，白色表示高透过率。
在一些实施方式中，在根据位置点集合、及所述映射关系，确定对应的透光率调节参数时，具体可以确定各参考位置点在相应透光区内的位置布局，然后根据该位置布局确定各参考位置点对应的权重信息，再获取每一位置点集合中各参考位置点对应的亮度值。最后基于权重信息，对各参考位置点对应的亮度值进行加权处理，得到目标亮度值，并按照预设规则对所述目标亮度值进行处理，从而得到对应的透光率调节参数。
实际应用中，为了满足HDR图像的拍摄效果，对于暗部需采用较高的曝光度、对于高亮部需采用较低的曝光度，因此透光率需设为随目标亮度值的增大而减小。其中，该透光率调节参数具体可以为液晶层中液晶分子的偏转角度。
在一些实施例中，步骤“根据所述亮度分布信息调节当前所述液晶面板的透光率”，可以包括以下流程：
（21）根据亮度分布信息确定对应的电信号参数；
（22）基于电信号参数向上层基板和下层基板施加相应电压，以驱动液晶层中的液晶分子发生偏转调节透光率。
其中，该电信号参数可以为电压值或电流值。具体实施时，可基于亮度分布信息中每一像素点的亮度值与周围像素点亮度值之间的亮度差异、以及各个像素点的实际亮度，来确定每一像素点所需的曝光度。并基于所需的曝光度确定该像素点对应在液晶面板上位置点的所需透光率。然后，基于预先构建的透光率与电信号参数之间的对应关系，确定当前所需的电信号参数。最后，基于电信号参数向上层基板和下层基板施加相应电压，以驱动液晶层中的液晶分子发生偏转调节透光率。
104、通过摄像头模组对当前场景进行第二次图像采集，得到目标图像。
在一些实施方式中，在通过摄像头模组对当前场景进行第二次图像采集时，具体可以包括：
（31）确定当前画面中的亮度值低于预设值的目标区域；
（32）根据目标区域的亮度值确定曝光参数；
（33）基于曝光参数驱动摄像头模组对当前场景进行第二次图像采集，得到目标图像。
具体的，根据亮度分布信息确定出当前预览图像中亮度值低于预设值的目标区域（即暗部区域），然后，根据目标区域的实际亮度值确定所需的曝光参数，基于曝光参数驱动摄像头模组对当前场景进行第二次图像采集，得到目标图像。实际应用中，可调节曝光参数（增加ISO和延长曝光时间）至暗部曝光合适，拍摄所得即HDR图像（参考图6中d图示）。
由上可知，本实施例提供的拍摄方法，通过在背光模组上进行开孔、并在开孔处设置电致变色玻璃，且将电致变色玻璃设置于摄像头模组的出光路径上，当摄像头模组工作时，控制电致变色玻璃变透明，外界光线依次经过液晶面板、开孔及变透明的电致变色玻璃后，进入摄像头模组的入光面。当需拍摄HDR图像时，通过摄像头模组对当前场景进行图像采集，并对采集到的图像进行分析，得到亮度分布信息，然后根据亮度分布信息调节液晶面板的透光率，最后通过摄像头模组进行二次图像采集，得到目标图像。本方案通过减少HDR图像获取时的曝光次数，仅需要两次曝光便可获得HDR图像，可降低电子设备功耗；另外，只需在调节液晶面板的透光率后拍摄获得HDR图像，而无需对多张曝光图像进行合成得到HDR图像，降低了图像处理难度。
在本申请又一实施例中，还提供一种拍摄装置，该拍摄装置可以软件或硬件的形式集成在电子设备中，该电子设备可以为如上描述的电子设备。例如，该电子设备可以包括显示屏和摄像头模组，所述显示屏包括层叠设置的液晶面板、背光模组和电致变色玻璃，所述液晶面板包括具有用于显示信息的显示区域；所述背光模组上设置有开孔，所述开孔位于所述显示区域内，且位于所述摄像头模组的出光路径上；所述电致变色玻璃位于所述液晶面板靠近所述背光模组的一侧，且在所述背光模组上的投影覆盖所述开孔。当所述摄像头模组工作时控制所述电致变色玻璃变透明，外界光线依次经过所述液晶面板、所述开孔及变透明后的电致变色玻璃后，进入所述摄像头模组的入光面。参考图9，该拍摄装置300可以包括：第一采集单元301、分析单元302、调节单元303及第二采集单元304。如下：
第一采集单元301，用于通过摄像头模组对当前场景进行第一次图像采集，得到参考图像；
分析单元302，用于对所述参考图像进行分析，得到所述参考图像的亮度分布信息；
调节单元303，用于根据所述亮度分布信息调节当前所述液晶面板的透光率；
第二采集单元304，用于通过摄像头模组对当前场景进行第二次图像采集，得到目标图像。
在一些实施方式中，亮度分布信息包括参考图像中每一像素点的亮度值；所述调节单元303可以用于：
确定每一像素点投影在所述液晶面板上的位置点，得到像素点与位置点之间的映射关系；
根据每一像素点的亮度值、及所述映射关系，对当前所述液晶面板的透光率进行调节。
在一些实施方式中，液晶面板包括多个透光区。在根据每一像素点的亮度值、及所述映射关系，对当前所述液晶面板的透光率进行调节时，调节单元303具体可以用于：
确定每一透光区包含的参考位置点，得到各透光区对应的位置点集合；
根据所述位置点集合、及所述映射关系，确定对应的透光率调节参数；
基于所述透光率调节参数对相应透光区的透光率进行调节。
在一些实施方式中，在根据所述位置点集合、及所述映射关系，确定对应的透光率调节参数时，调节单元303进一步可以用于：
确定各参考位置点在相应透光区内的位置布局；
根据所述位置布局确定各参考位置点对应的权重信息；
获取所述位置点集合中各参考位置点对应的亮度值；
基于所述权重信息，对各参考位置点对应的亮度值进行加权处理，得到目标亮度值；
按照预设规则对所述目标亮度值进行处理，得到对应的透光率调节参数。
在一些实施方式中，透光率随目标亮度值的增大而减小。
在一些实施方式中，液晶面板包括透明的上层基板、液晶层和透明的下层基板，所述上层基板、液晶层和下层基板依次层叠设置。在根据亮度分布信息调节当前液晶面板的透光率时，调节单元可以用于：
根据所述亮度分布信息确定对应的电信号参数；
基于所述电信号参数向上层基板和所述下层基板施加相应电压，以驱动所述液晶层中的液晶分子发生偏转调节透光率。
在一些实施方式中，第二采集单元可以用于：
确定当前画面中的亮度值低于预设值的目标区域；
根据所述目标区域的亮度值确定曝光参数；
基于所述曝光参数驱动所述摄像头模组对当前场景进行第二次图像采集，得到目标图像。
由上可知，本申请实施例提供的拍摄装置，通过在背光模组上进行开孔、并在开孔处设置电致变色玻璃，且将电致变色玻璃设置于摄像头模组的出光路径上，当摄像头模组工作时，控制电致变色玻璃变透明，外界光线依次经过液晶面板、开孔及变透明的电致变色玻璃后，进入摄像头模组的入光面。当需拍摄HDR图像时，通过摄像头模组对当前场景进行图像采集，并对采集到的图像进行分析，得到亮度分布信息，然后根据亮度分布信息调节液晶面板的透光率，最后通过摄像头模组进行二次图像采集，得到目标图像。本方案通过减少HDR图像获取时的曝光次数，可降低电子设备功耗；另外，只需在调节液晶面板的透光率后拍摄获得HDR图像，而无需对多张曝光图像进行合成得到HDR图像，降低了图像处理难度。
以上对本申请实施例提供的拍摄方法、装置、存储介质及电子设备进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请。同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种拍摄方法，应用于电子设备，其中，所述电子设备包括显示屏和摄像头模组，所述显示屏包括层叠设置的液晶面板、背光模组和电致变色玻璃，所述液晶面板包括具有用于显示信息的显示区域；所述背光模组上设置有开孔，所述开孔位于所述显示区域内，且位于所述摄像头模组的出光路径上；所述电致变色玻璃位于所述液晶面板靠近所述背光模组的一侧，且在所述背光模组上的投影覆盖所述开孔；
    当所述摄像头模组工作时，控制所述电致变色玻璃变透明，外界光线依次经过所述液晶面板、所述开孔及变透明的电致变色玻璃后，进入所述摄像头模组的入光面；所述方法包括：
    通过所述摄像头模组对当前场景进行第一次图像采集，得到参考图像；
    对所述参考图像进行分析，得到所述参考图像的亮度分布信息；
    根据所述亮度分布信息调节当前所述液晶面板的透光率；
    通过所述摄像头模组对当前场景进行第二次图像采集，得到目标图像。
  2. 根据权利要求1所述的拍摄方法，其中，所述亮度分布信息包括所述参考图像中每一像素点的亮度值；所述根据所述亮度分布信息调节当前所述液晶面板的透光率，包括：
    确定每一像素点投影在所述液晶面板上的位置点，得到像素点与位置点之间的映射关系；
    根据每一像素点的亮度值、及所述映射关系，对当前所述液晶面板的透光率进行调节。
  3. 根据权利要求2所述的拍摄方法，其中，所述液晶面板包括多个透光区；所述根据每一像素点的亮度值、及所述映射关系，对当前所述液晶面板的透光率进行调节，包括：
    确定每一透光区包含的参考位置点，得到各透光区对应的位置点集合；
    根据所述位置点集合、及所述映射关系，确定对应的透光率调节参数；
    基于所述透光率调节参数对相应透光区的透光率进行调节。
  4. 根据权利要求3所述的拍摄方法，其中，所述根据所述位置点集合、及所述映射关系，确定对应的透光率调节参数，包括：
    确定各参考位置点在相应透光区内的位置布局；
    根据所述位置布局确定各参考位置点对应的权重信息；
    获取所述位置点集合中各参考位置点对应的亮度值；
    基于所述权重信息，对各参考位置点对应的亮度值进行加权处理，得到目标亮度值；
    按照预设规则对所述目标亮度值进行处理，得到对应的透光率调节参数。
  5. 根据权利要求4所述的拍摄方法，其中，透光率随目标亮度值的增大而减小。
  6. 根据权利要求1所述的拍摄方法，其中，所述液晶面板包括透明的上层基板、液晶层和透明的下层基板，所述上层基板、液晶层和下层基板依次层叠设置；所述根据所述亮度分布信息调节当前所述液晶面板的透光率，包括：
    根据所述亮度分布信息确定对应的电信号参数；
    基于所述电信号参数向上层基板和所述下层基板施加相应电压，以驱动所述液晶层中的液晶分子发生偏转调节透光率。
  7. 根据权利要求1所述的拍摄方法，其中，通过所述摄像头模组对当前场景进行第二次图像采集，得到目标图像，包括：
    确定当前画面中的亮度值低于预设值的目标区域；
    根据所述目标区域的亮度值确定曝光参数；
    基于所述曝光参数驱动所述摄像头模组对当前场景进行第二次图像采集，得到目标图像。
  8. 一种计算机可读存储介质，应用于电子设备，其中，所述电子设备包括显示屏和摄像头模组，所述显示屏包括层叠设置的液晶面板、背光模组和电致变色玻璃，所述液晶面板包括具有用于显示信息的显示区域；所述背光模组上设置有开孔，所述开孔位于所述显示区域内，且位于所述摄像头模组的出光路径上；所述电致变色玻璃位于所述液晶面板靠近所述背光模组的一侧，且在所述背光模组上的投影覆盖所述开孔；
    当所述摄像头模组工作时，控制所述电致变色玻璃变透明，外界光线依次经过所述液晶面板、所述开孔及变透明的电致变色玻璃后，进入所述摄像头模组的入光面；
    所述存储介质中存储有多条指令，所述指令适于由处理器加载以执行如下方法的步骤：
    当所述摄像头模组工作时，控制所述电致变色玻璃变透明，外界光线依次经过所述液晶面板、所述开孔及变透明的电致变色玻璃后，进入所述摄像头模组的入光面；所述方法包括：
    通过所述摄像头模组对当前场景进行第一次图像采集，得到参考图像；
    对所述参考图像进行分析，得到所述参考图像的亮度分布信息；
    根据所述亮度分布信息调节当前所述液晶面板的透光率；
    通过所述摄像头模组对当前场景进行第二次图像采集，得到目标图像。
  9. 根据权利要求8所述的存储介质，其中，所述亮度分布信息包括所述参考图像中每一像素点的亮度值；在根据所述亮度分布信息调节当前所述液晶面板的透光率时，所述指令适于由处理器加载以执行如下方法的步骤：
    确定每一像素点投影在所述液晶面板上的位置点，得到像素点与位置点之间的映射关系；
    根据每一像素点的亮度值、及所述映射关系，对当前所述液晶面板的透光率进行调节。
  10. 根据权利要求9所述的存储介质，其中，所述液晶面板包括多个透光区；在根据每一像素点的亮度值、及所述映射关系，对当前所述液晶面板的透光率进行调节时，所述指令适于由处理器加载以执行如下方法的步骤：
    确定每一透光区包含的参考位置点，得到各透光区对应的位置点集合；
    根据所述位置点集合、及所述映射关系，确定对应的透光率调节参数；
    基于所述透光率调节参数对相应透光区的透光率进行调节。
  11. 根据权利要求10所述的存储介质，其中，在根据所述位置点集合、及所述映射关系，确定对应的透光率调节参数时，所述指令适于由处理器加载以执行如下方法的步骤：
    确定各参考位置点在相应透光区内的位置布局；
    根据所述位置布局确定各参考位置点对应的权重信息；
    获取所述位置点集合中各参考位置点对应的亮度值；
    基于所述权重信息，对各参考位置点对应的亮度值进行加权处理，得到目标亮度值；
    按照预设规则对所述目标亮度值进行处理，得到对应的透光率调节参数。
  12. 根据权利要求11所述的存储介质，其中，透光率随目标亮度值的增大而减小。
  13. 根据权利要求8所述的存储介质，其中，所述液晶面板包括透明的上层基板、液晶层和透明的下层基板，所述上层基板、液晶层和下层基板依次层叠设置；在根据所述亮度分布信息调节当前所述液晶面板的透光率时，所述指令适于由处理器加载以执行如下方法的步骤：
    根据所述亮度分布信息确定对应的电信号参数；
    基于所述电信号参数向上层基板和所述下层基板施加相应电压，以驱动所述液晶层中的液晶分子发生偏转调节透光率。
  14. 根据权利要求8所述的存储介质，其中，在通过所述摄像头模组对当前场景进行第二次图像采集，得到目标图像时，所述指令适于由处理器加载以执行如下方法的步骤：
    确定当前画面中的亮度值低于预设值的目标区域；
    根据所述目标区域的亮度值确定曝光参数；
    基于所述曝光参数驱动所述摄像头模组对当前场景进行第二次图像采集，得到目标图像。
  15. 一种电子设备，其中，所述电子设备包括显示屏、摄像头模组、处理器及存储器，所述处理器分别与所述显示屏、所述摄像头模组及所述存储器电性连接；
    所述显示屏包括层叠设置的液晶面板、背光模组和电致变色玻璃，所述液晶面板包括具有用于显示信息的显示区域；所述背光模组上设置有开孔，所述开孔位于所述显示区域内，且位于所述摄像头模组的出光路径上；所述电致变色玻璃位于所述液晶面板靠近所述背光模组的一侧，且在所述背光模组上的投影覆盖所述开孔；
    当所述摄像头模组工作时，控制所述电致变色玻璃变透明，外界光线依次经过所述液晶面板、所述开孔及变透明的电致变色玻璃后，进入所述摄像头模组的入光面；
    所述存储器用于存储指令和数据；所述处理器用于执行如下方法的步骤：
    当所述摄像头模组工作时，控制所述电致变色玻璃变透明，外界光线依次经过所述液晶面板、所述开孔及变透明的电致变色玻璃后，进入所述摄像头模组的入光面；所述方法包括：
    通过所述摄像头模组对当前场景进行第一次图像采集，得到参考图像；
    对所述参考图像进行分析，得到所述参考图像的亮度分布信息；
    根据所述亮度分布信息调节当前所述液晶面板的透光率；
    通过所述摄像头模组对当前场景进行第二次图像采集，得到目标图像。
  16. 根据权利要求15所述的电子设备，其中，所述亮度分布信息包括所述参考图像中每一像素点的亮度值；在根据所述亮度分布信息调节当前所述液晶面板的透光率时，所述处理器用于执行如下方法的步骤：
    确定每一像素点投影在所述液晶面板上的位置点，得到像素点与位置点之间的映射关系；
    根据每一像素点的亮度值、及所述映射关系，对当前所述液晶面板的透光率进行调节。
  17. 根据权利要求16所述的电子设备，其中，所述液晶面板包括多个透光区；在根据每一像素点的亮度值、及所述映射关系，对当前所述液晶面板的透光率进行调节时，所述处理器用于执行如下方法的步骤：
    确定每一透光区包含的参考位置点，得到各透光区对应的位置点集合；
    根据所述位置点集合、及所述映射关系，确定对应的透光率调节参数；
    基于所述透光率调节参数对相应透光区的透光率进行调节。
  18. 根据权利要求17所述的电子设备，其中，在根据所述位置点集合、及所述映射关系，确定对应的透光率调节参数时，所述处理器用于执行如下方法的步骤：
    确定各参考位置点在相应透光区内的位置布局；
    根据所述位置布局确定各参考位置点对应的权重信息；
    获取所述位置点集合中各参考位置点对应的亮度值；
    基于所述权重信息，对各参考位置点对应的亮度值进行加权处理，得到目标亮度值；
    按照预设规则对所述目标亮度值进行处理，得到对应的透光率调节参数。
  19. 根据权利要求15所述的电子设备，其中，所述液晶面板包括透明的上层基板、液晶层和透明的下层基板，所述上层基板、液晶层和下层基板依次层叠设置；在根据所述亮度分布信息调节当前所述液晶面板的透光率时，所述处理器用于执行如下方法的步骤：
    根据所述亮度分布信息确定对应的电信号参数；
    基于所述电信号参数向上层基板和所述下层基板施加相应电压，以驱动所述液晶层中的液晶分子发生偏转调节透光率。
  20. 根据权利要求15所述的电子设备，其中，在通过所述摄像头模组对当前场景进行第二次图像采集，得到目标图像时，所述处理器用于执行如下方法的步骤：
    确定当前画面中的亮度值低于预设值的目标区域；
    根据所述目标区域的亮度值确定曝光参数；
    基于所述曝光参数驱动所述摄像头模组对当前场景进行第二次图像采集，得到目标图像。
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