WO2022227380A1 - 一种显示屏亮度校正方法、装置及电子设备 - Google Patents
一种显示屏亮度校正方法、装置及电子设备 Download PDFInfo
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- WO2022227380A1 WO2022227380A1 PCT/CN2021/119190 CN2021119190W WO2022227380A1 WO 2022227380 A1 WO2022227380 A1 WO 2022227380A1 CN 2021119190 W CN2021119190 W CN 2021119190W WO 2022227380 A1 WO2022227380 A1 WO 2022227380A1
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- display screen
- emitting unit
- light
- brightness
- value
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000011159 matrix material Substances 0.000 claims abstract description 18
- 238000004590 computer program Methods 0.000 claims description 27
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- 238000010586 diagram Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 5
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
- G09G2320/062—Adjustment of illumination source parameters
Definitions
- the present application belongs to the technical field of image display, and in particular, relates to a display screen brightness correction method, a display screen brightness correction device, an electronic device, and a computer-readable storage medium.
- the glass cover of the ordinary display screen will be affected by the reflection of the screen, and the picture will be deformed and distorted. In severe cases, the light reflected by the glass will also affect people. vision.
- the use of atomized polarizers and atomized cover plates can effectively solve the problem of poor picture quality caused by reflection.
- the picture displayed on the display screen is easily affected by the interference and diffraction of light, and bright spots or dark spots appear, which affects the user's visual experience.
- the present application provides a display screen brightness correction method, a display screen brightness correction device, an electronic device and a computer-readable storage medium, which can solve the problem of light spots or dark spots occurring due to the display screen structure during image display.
- the present application provides a method for calibrating the brightness of a display screen, including:
- the light-emitting unit is obtained by dividing the backlight source of the display screen, and the backlight source is a matrix backlight source;
- the present application provides a display screen brightness correction device, comprising:
- the acquisition module is used to acquire the brightness value of each light-emitting unit of the display screen under the white screen, and the above-mentioned light-emitting unit is obtained by dividing the backlight source of the above-mentioned display screen, and the above-mentioned backlight source is a matrix type backlight source;
- a determination module configured to determine the above-mentioned light-emitting unit that meets the preset condition as a target light-emitting unit according to the above-mentioned brightness value
- the setting module is used for setting the current value of the target light-emitting unit to correct the brightness of the display screen.
- the present application provides an electronic device, the electronic device includes a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements the computer program described above when executing the computer program. The steps of the method of the first aspect.
- the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, implements the steps of the method in the first aspect.
- the present application provides a computer program product, wherein the computer program product includes a computer program, and when the computer program is executed by one or more processors, the steps of the method of the first aspect are implemented.
- the present application has the beneficial effects that: the backlight source of the display screen of the present application adopts a matrix type backlight source, and the matrix type backlight source can be divided to obtain light-emitting units, and then the brightness of the display screen can be corrected.
- the process of calibration first obtain the brightness value of each light-emitting unit under the white screen of the display screen, and filter out the target light-emitting unit to be adjusted according to the brightness value, and then set the current value of the target light-emitting unit, that is, the adjustment matrix.
- the current value of some areas of the type backlight source can finally be corrected for the brightness of the display screen, which can reduce the light spots or dark spots caused by the structure of the display screen, improve the consistency of the screen brightness, and improve the user's visual experience.
- FIG. 1 is a schematic flowchart of a method for calibrating display screen brightness provided by an embodiment of the present application
- FIG. 2 is a schematic diagram of a white screen provided by an embodiment of the present application.
- FIG. 3 is a schematic structural diagram of a display screen brightness correction device provided by an embodiment of the present application.
- FIG. 4 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
- the display brightness correction method provided by the embodiments of the present application can be applied to mobile phones, tablet computers, in-vehicle devices, augmented reality (AR)/virtual reality (VR) devices, notebook computers, and ultra-mobile personal computers (ultra mobile personal computers).
- augmented reality (AR)/virtual reality (VR) devices notebook computers
- ultra-mobile personal computers ultra mobile personal computers
- -mobile personal computer, UMPC netbook
- personal digital assistant personal digital assistant, PDA
- other electronic devices do not impose any restrictions on the specific types of electronic devices.
- FIG. 1 shows a schematic flowchart of a method for calibrating the brightness of a display screen provided by the present application.
- the method can be applied to any of the above electronic devices.
- Step 101 Obtain the brightness value of each light-emitting unit of the display screen under a white picture.
- the backlight source of the display screen is a matrix type backlight source.
- the backlight source is a light source located behind the liquid crystal display. It is a product that converts point light into surface light, and its luminous effect will directly affect the visual effect of the liquid crystal display module. Since the liquid crystal display itself does not emit light, it only displays the image or the result of its modulation of the light, so it needs a backlight to assist in the display of the picture.
- the matrix backlight shown in this application can be divided into multiple partitions, that is, multiple light-emitting units; through the individual control of each light-emitting unit, the backlight illumination can be made more accurate, which is helpful to solve the problem in the image display process.
- the problem of light spots or dark spots caused by the structure of the display screen is the problem of light spots or dark spots caused by the structure of the display screen.
- the more partitions of the backlight source the better, for example, one lamp bead corresponds to one light-emitting unit.
- the electronic device detects the brightness of each light-emitting unit by collecting a picture, and can divide the picture into several pixels according to the resolution of the display screen.
- the backlight source can be divided according to the resolution of the display screen, for example, one pixel corresponds to one lamp bead, or one lamp bead corresponds to multiple pixel.
- the electronic device needs to first obtain the brightness value of each light-emitting unit of the display screen under a white screen.
- the reason why the display screen is under a white picture is because when a white picture is displayed, the brightness of the red, green and blue colors is balanced, which can accurately restore the true color. Usually, when three colors are lit and mixed at the same time, the displayed color is not white. After adjusting the brightness through repeated tests, the balance value of the brightness of each color can be found.
- Step 102 Determine the light-emitting unit that meets the preset condition as a target light-emitting unit according to the brightness value.
- the light-emitting unit is determined as the light-emitting unit that needs brightness correction, so as to facilitate subsequent correction of the brightness of the display screen.
- Step 103 Set the current value of the target light-emitting unit to correct the brightness of the display screen.
- the brightness of the display screen can be corrected by setting the current value of the target light-emitting unit, so as to improve the consistency of the screen brightness, thereby improving the user's visual experience.
- the above step 101 specifically includes:
- A2 Determine the average value of the luminance values of the pixel points in the light-emitting unit as the luminance value of the light-emitting unit.
- a light-emitting unit includes at least one pixel.
- one pixel can correspond to a lamp bead mentioned in step 102, which can make the backlight illumination more accurate and help solve the problem of During the image display process, the problem of light spots or dark spots occurs due to the structure of the display screen.
- a light-emitting unit may also include multiple pixel points, for example, a light-emitting unit includes 4 pixel points, wherein the four pixel points may correspond to one lamp bead mentioned in step 102 .
- the luminance value of the pixel is the luminance value of the pixel of the light-emitting unit.
- the luminance values of all pixels in the light-emitting unit can be obtained first, then the average value of the luminance values of all the pixels can be calculated, and finally the average value is determined as the luminance value of the light-emitting unit, In order to improve the accuracy of determining the brightness value of the light-emitting unit.
- the above step 102 specifically includes:
- the average brightness value under the white screen can be calculated according to the brightness value.
- the luminance values of each light-emitting unit may be accumulated to obtain the sum of the luminance values, and then the average luminance value may be obtained by dividing the sum of the luminance values by the number of light-emitting units.
- the preset condition for judging whether the light-emitting unit is the target light-emitting unit may be: the brightness deviation ratio of the light-emitting unit exceeds the preset brightness deviation ratio range, and the composition of the range includes two values, and one value is used to filter the light emission with an excessively high brightness value.
- the unit that is, the light-emitting unit whose brightness value is much higher than the average brightness value, can be selected as the target light-emitting unit; another value is used to filter the light-emitting unit whose brightness value is too low, that is, the light-emitting unit whose brightness value is much lower than the average brightness value.
- the range of the luminance deviation ratio may be -5% to 5%, that is, if the luminance deviation ratio of any light-emitting unit is less than -5% or greater than 5%, the light-emitting unit may be used as the target light-emitting unit. It should be understood that, the smaller the ratio range of the brightness deviation is, the better the brightness correction effect of the display screen is.
- step 103 Specifically include:
- C1 determine the target current value of the target light-emitting unit according to the average brightness value
- the average brightness value calculated in step B1 can be used as the target current value of the target light-emitting unit, and then the current value of the target light-emitting unit is set according to the target current value to achieve Correction for display brightness.
- the target current value of the target light-emitting unit is accurately determined according to the average brightness value, and the above step C1 specifically includes:
- C12 Determine the target current value of the target light-emitting unit based on the linear equation and the average luminance value.
- the relationship between the brightness value and the current value of the backlight of the display screen is linear.
- the corresponding linear curve is fitted, and the linear equation corresponding to the linear curve is derived.
- the target current value of the target light-emitting unit can be determined according to the linear equation and the average brightness value. Specifically, the target current value is calculated by substituting the average luminance value into the linear equation. Based on the calculated target current value, set the target pixel point, perform brightness compensation for the target pixel point whose brightness value is lower than the average brightness value, and increase the current value of the target pixel point; for the target pixel point whose brightness value is higher than the average brightness value The brightness of the pixel is reduced, and the current value of the target pixel is lowered.
- the current value is set for all the target pixels, the brightness of the white screen displayed on the display can be consistent, improving the user's visual experience.
- the above step 102 specifically includes:
- the current value of the target light-emitting unit is set by driving the display screen, so as to correct the brightness of the display screen.
- the electronic device can set the current value of the target light-emitting unit through the driving of the display screen, make up or weaken the brightness value of the target light-emitting point in the corresponding area, keep the brightness of the screen surface consistent, and improve the user's visual experience.
- the electronic device can set the current value of the target light-emitting unit by driving the display screen, that is, the electronic device can set the current value of the target light-emitting unit to the target current value by driving the display screen.
- the driver of some display screens has a control function of the backlight source, and the driver of some display screens does not have the control function of the backlight source.
- the above step D specifically includes: :
- D1 If the driving of the display screen has the function of controlling the backlight, instruct the driving of the display screen to set the current value of the target light-emitting unit to correct the brightness of the display screen.
- the driver can directly control the backlight source. After the target light-emitting unit is determined in step B3, the driver of the display screen can be instructed to set the current value of the target light-emitting unit to correct the brightness of the display screen.
- Microcontroller Unit For the second type of display screen, its driver does not have the function of directly controlling the backlight source, and a Microcontroller Unit (MCU) needs to be preset.
- Micro control unit also known as single chip microcomputer (Single Chip Microcomputer) or single chip microcomputer, is to appropriately reduce the frequency and specifications of the central processing unit (Central Process Unit, CPU), and reduce the frequency and specifications of the memory (memory), counter (Timer), general Serial bus (Universal Serial Bus, USB), converter (A/D converter), Universal Asynchronous Receiver/Transmitter (UART), Programmable Logic Controller (Programmable Logic Controller, PLC) and direct Peripheral interfaces such as memory access (Direct Memory Access, DMA), and even liquid crystal display (Liquid Crystal Display, LCD) drive circuits are integrated on a single chip to form a chip-level computer, which can be controlled in different combinations for different applications.
- DMA Direct Memory Access
- LCD liquid crystal display
- the micro-control unit is arranged between the driver of the display screen and the backlight source, is connected with the driver of the display screen, and is connected with the driver of the backlight source. It can be considered that the microcontroller is the communication bridge between the driver and the display screen. After the target light-emitting unit is determined in step B3, the drive of the display screen can be instructed to set the current value of the target light-emitting unit through the preset micro-control unit, so as to realize the correction of the brightness of the display screen.
- each light-emitting unit includes 4 pixels. For each light-emitting unit, to determine its brightness value, you can first obtain the brightness value, then calculate the average value of the brightness values of each pixel point, and determine the average value as the brightness value of the light-emitting unit, and so on, to determine the brightness value of all the light-emitting units.
- each light-emitting unit After determining the brightness value of each light-emitting unit, you can first calculate the average value of the brightness value of each light-emitting unit under the white screen, that is, the average brightness value, assuming that the average brightness value is N'; then based on the brightness value of each light-emitting unit and the average brightness value The brightness value determines the brightness deviation ratio of each light-emitting unit; after calculating the brightness deviation ratio of each light-emitting unit, it can be judged in turn whether the brightness deviation ratio of each light-emitting unit meets the preset condition, assuming that the preset condition is that the brightness deviation ratio is greater than 10 % or less than -10% of the light-emitting units are the target light-emitting units.
- N1 is 18%
- N2 is 18%
- the deviation ratio is -16%
- the brightness deviation ratio of N3 is 23%.
- the drive of the display screen is instructed to set the current values of the three target light-emitting units N1, N2 and N3, so that the current values of the three target light-emitting units and other light-emitting units The current values of the cells tend to be consistent.
- the drive of the display screen is instructed to set the current values of the three target light-emitting units N1, N2 and N3 via the preset micro-control unit, so that the three targets emit light
- the current value of the unit and the current value of other light-emitting units tend to be consistent.
- the backlight source of the display screen adopts a matrix type backlight source, and the light emitting units can be obtained by dividing the matrix type backlight source, and then the brightness of the display screen can be corrected.
- the process of calibration first obtain the brightness value of each light-emitting unit under the white screen of the display screen, and filter out the target light-emitting unit to be adjusted according to the brightness value, and then set the current value of the target light-emitting unit, that is, set the current value of the target light-emitting unit.
- the current value of some areas of the matrix backlight can finally correct the brightness of the display screen, which can reduce the light spots or dark spots caused by the structure of the display screen, improve the consistency of the screen brightness, and improve the user's visual experience.
- FIG. 3 shows a structural block diagram of the display screen brightness correction device 3 provided by the embodiment of the present application. part.
- the display screen brightness correction device 3 includes:
- the obtaining module 301 is used for obtaining the brightness value of each light-emitting unit of the display screen under the white screen, the light-emitting unit is obtained by dividing the backlight source of the display screen, and the backlight source is a matrix backlight source;
- a determination module 302 configured to determine a light-emitting unit that meets a preset condition as a target light-emitting unit according to the brightness value
- the setting module 303 is used to set the current value of the target light-emitting unit to correct the brightness of the display screen.
- the light-emitting unit includes at least one pixel
- the acquisition module 301 may include:
- a luminance value acquiring unit configured to acquire, for each light-emitting unit, the luminance value of a pixel in the light-emitting unit
- the luminance value determination unit of the light-emitting unit is configured to determine the average value of luminance values of the pixel points in the light-emitting unit as the luminance value of the light-emitting unit.
- the above determination module 302 may include:
- an average brightness value calculation unit configured to calculate the average brightness value under the white screen according to the brightness value of each light-emitting unit
- a brightness deviation ratio determination unit configured to determine the brightness deviation ratio of each light-emitting unit based on the brightness value and the average brightness value of each light-emitting unit
- the target light-emitting unit determining unit is configured to determine the light-emitting unit whose luminance deviation ratio meets the preset condition as the target light-emitting unit.
- the above setting module 303 may include:
- a target current value determination unit configured to determine a target current value of the target light-emitting unit according to the average brightness value
- the first setting unit is used for setting the current value of the target light-emitting unit as the target current value, so as to correct the brightness of the display screen.
- the above-mentioned target light-emitting unit determination unit may further include:
- the linear equation determining subunit determines the linear equation between the current and the brightness value of the backlight source of the display screen
- the target current value determination subunit is used for determining the target current value of the target light-emitting unit based on the linear manner, the average luminance value and the current current value of the target light-emitting unit.
- the above setting module 303 may include:
- the second setting unit is used for setting the current value of the target light-emitting unit by using the driving of the display screen, so as to correct the brightness of the display screen.
- the above-mentioned second setting unit may include:
- the first setting subunit of the current value is used for instructing the driving of the display screen to set the current value of the target light-emitting unit to correct the brightness of the display screen if the driving of the display screen has the function of controlling the backlight source;
- the second setting subunit of the current value is used to instruct the display screen driver to set the current value of the target light-emitting unit via the preset micro-control unit if the display screen driver does not have the function of controlling the backlight source, so as to adjust the display screen brightness. Correction.
- the backlight source of the display screen adopts a matrix type backlight source, and the light emitting units can be obtained by dividing the matrix type backlight source, and then the brightness of the display screen can be corrected.
- the process of calibration first obtain the brightness value of each light-emitting unit under the white screen of the display screen, and filter out the target light-emitting unit to be adjusted according to the brightness value, and then set the current value of the target light-emitting unit, that is, set the current value of the target light-emitting unit.
- the current value of some areas of the matrix backlight can finally correct the brightness of the display screen, which can reduce the light spots or dark spots caused by the structure of the display screen, improve the consistency of the screen brightness, and improve the user's visual experience.
- FIG. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
- the electronic device 4 of this embodiment includes: at least one processor 40 (only one is shown in FIG. 4 ), a memory 41 , and is stored in the memory 41 and can run on the at least one processor 40
- the computer program 42 when the processor 40 executes the computer program 42, implements the steps in any of the foregoing embodiments of the fitness program generation method, such as steps 101-104 shown in FIG. 1 .
- the so-called processor 40 may be a central processing unit (Central Processing Unit, CPU), and the processor 40 may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuits) , ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
- a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
- the memory 41 may in some embodiments be an internal storage unit of the electronic device 4 , such as a hard disk or a memory of the electronic device 4 .
- the memory 41 may also be an external storage device of the electronic device 4 in other embodiments, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) equipped on the electronic device 4 Card, Flash Card, etc.
- the memory 41 may also include both an internal storage unit of the terminal device 4 and an external storage device.
- the memory 41 is used to store an operating device, an application program, a boot loader (Boot Loader), data, and other programs, such as program codes of computer programs, and the like.
- the memory 41 can also be used to temporarily store data that has been output or is to be output.
- Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps in the foregoing method embodiments can be implemented.
- the embodiments of the present application provide a computer program product, when the computer program product runs on a mobile terminal, the steps in the foregoing method embodiments can be implemented when the mobile terminal executes the computer program product.
- 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.
- the present application realizes all or part of the processes in the methods of the above embodiments, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium.
- the computer program includes computer program code
- the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like.
- the computer-readable medium may include at least: any entity or device capable of carrying the computer program code to the photographing device/electronic device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signals, telecommunication signals, and software distribution media.
- ROM read-only memory
- RAM random access memory
- electrical carrier signals telecommunication signals
- software distribution media For example, U disk, mobile hard disk, disk or CD, etc.
- computer readable media may not be electrical carrier signals and telecommunications signals.
- the disclosed apparatus/network device and method may be implemented in other manners.
- the apparatus/network device embodiments described above are only illustrative.
- the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units. Or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented.
- the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
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Abstract
本申请公开了一种显示屏亮度校正方法、装置及电子设备，该方法包括：获取显示屏在白色画面下各个发光单元的亮度值，发光单元通过对显示屏的背光源分割得到，背光源为矩阵式背光源；根据亮度值将符合预设条件的发光单元确定为目标发光单元；设置目标发光单元的电流值，以对显示屏亮度进行校正。本申请通过对矩阵式背光源的部分区域的电流值进行校正，能够减轻因显示屏结构导致的光斑或暗点，提升屏幕亮度的一致性，从而提高用户视觉体验。
Description
本申请属于图像显示技术领域，尤其涉及一种显示屏亮度校正方法、显示屏亮度校正装置、电子设备及计算机可读存储介质。
普通显示屏的玻璃盖板在太阳光直射和高亮度灯光等观看条件不佳的情况下，会因为屏幕反光造成清晰度受到影响，画面会变形失真，严重时玻璃反射的光线还会影响到人的视力。使用雾化偏光片及雾化盖板方案可有效解决因反射造成的画面质量变差的问题。但是使用雾化偏光片及雾化盖板替代玻璃盖板后，显示屏显示的画面容易受光的干涉和衍射影响，出现亮斑或暗点，影响用户视觉体验。
发明内容
本申请提供了一种显示屏亮度校正方法、显示屏亮度校正装置、电子设备及计算机可读存储介质，可以解决图像显示过程中因显示屏结构出现光斑或者暗点的问题。
第一方面，本申请提供了一种显示屏亮度校正方法，包括：
获取显示屏在白色画面下各个发光单元的亮度值，上述发光单元通过对上述显示屏的背光源分割得到，上述背光源为矩阵式背光源；
根据上述亮度值将符合预设条件的上述发光单元确定为目标发光单元；
设置上述目标发光单元的电流值，以对显示屏亮度进行校正。
第二方面，本申请提供了一种显示屏亮度校正装置，包括：
获取模块，用于获取显示屏在白色画面下各个发光单元的亮度值，上述发 光单元通过对上述显示屏的背光源分割得到，上述背光源为矩阵式背光源；
确定模块，用于根据上述亮度值将符合预设条件的上述发光单元确定为目标发光单元；
设置模块，用于设置上述目标发光单元的电流值，以对显示屏亮度进行校正。
第三方面，本申请提供了一种电子设备，上述电子设备包括存储器、处理器以及存储在上述存储器中并可在上述处理器上运行的计算机程序，上述处理器执行上述计算机程序时实现如上述第一方面的方法的步骤。
第四方面，本申请提供了一种计算机可读存储介质，上述计算机可读存储介质存储有计算机程序，上述计算机程序被处理器执行时实现如上述第一方面的方法的步骤。
第五方面，本申请提供了一种计算机程序产品，上述计算机程序产品包括计算机程序，上述计算机程序被一个或多个处理器执行时实现如上述第一方面的方法的步骤。
本申请与现有技术相比存在的有益效果是：本申请显示屏的背光源采用矩阵式背光源，可以先对该矩阵式背光源划分得到发光单元，再对显示屏亮度进行校正。校正的过程中，先获取显示屏在白色画面下的各个发光单元的亮度值，并根据该亮度值筛选出需要调节的目标发光单元，之后通过对目标发光单元的电流值进行设置，即调节矩阵式背光源的部分区域的电流值，最终实现对显示屏亮度的校正，能够减轻因显示屏结构导致的光斑或暗点，提升屏幕亮度的一致性，从而提高用户视觉体验。
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术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，对于本领域普通技术人员来讲，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是本申请实施例提供的显示屏亮度校正方法的流程示意图；
图2是本申请实施例提供的白色画面示意图；
图3是本申请实施例提供的显示屏亮度校正装置的结构示意图；
图4是本申请实施例提供的电子设备的结构示意图。
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、技术之类的具体细节，以便透彻理解本申请实施例。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施例中也可以实现本申请。在其它情况中，省略对众所周知的系统、装置、电路以及方法的详细说明，以免不必要的细节妨碍本申请的描述。
本申请实施例提供的显示屏亮度校正方法可以应用于手机、平板电脑、车载设备、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、笔记本电脑、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本、个人数字助理(personal digital assistant，PDA)等电子设备上，本申请实施例对电子设备的具体类型不作任何限制。
为了说明本申请所提出的技术方案，下面通过具体实施例来进行说明。
图1示出了本申请提供的显示屏亮度校正方法方法的示意性流程图，作为示例而非限定，该方法可以应用于上述任意一种电子设备中。
步骤101、获取显示屏在白色画面下各个发光单元的亮度值。
在本申请实施例中，显示屏的背光源为矩阵式背光源。背光源是位于液晶显示器背后的一种光源，它是将点光转变为面光的一种产品，其发光效果会直接影响液晶显示模块的视觉效果。由于液晶显示器本身并不发光，它仅显示图像或者它对光线调制的结果，因此需要背光源辅助进行画面显示。而本申请所示出的矩阵式背光源可被划分成多个分区，即多个发光单元；通过对每个发光 单元的单独控制，可使得背光照明更加精准，有助于解决在图像显示过程中因显示屏结构导致出现光斑或者暗点的问题。可选地，为了提高对发光单元控制的精确性，背光源的分区越多越好，例如，可以是一个灯珠对应一个发光单元。
可选地，在本申请实施例中，电子设备通过采集图片对每个发光单元的亮度进行检测，并可以根据显示屏的分辨率将图片划分出若干个像素点。为了提高发光单元的控制效率，可选地，在对背光源进行划分时，可以根据显示屏的分辨率对背光源进行划分，例如一个像素点对应一个灯珠，也可以一个灯珠对应多个像素点。
电子设备要判断出需要调节的发光单元，需要先获取显示屏在白色画面下每个发光单元的亮度值。之所以让显示屏在白色画面下，是因为当显示白色画面时，红绿蓝三色的亮度是平衡的，能够准确的还原真实色彩。通常情况下，当三个颜色同时点亮混合后，所显示出来的颜色不是白色，通过反复测试调整亮度后，能够找到每个颜色亮度的平衡值。因此，在白色画面下进一步检测发光单元的亮度值，能够在确保还原真实色彩的基础上进一步判断显示屏显示的画面中是否存在光斑或者暗点等亮度不均匀的现象，以对显示屏的亮度进行校正，提高用户视觉体验。
步骤102、根据所述亮度值将符合预设条件的所述发光单元确定为目标发光单元。
在本申请实施例中，要实现对显示屏亮度的校正，需要根据发光单元的亮度值判断哪些符合预设条件，并将符合预设条件的发光单元确定为目标发光单元，即将符合预设条件的发光单元确定为需要进行亮度校正的发光单元，以便于后续对显示屏亮度进行校正。
步骤103、设置所述目标发光单元的电流值，以对显示屏亮度进行校正。
在本申请实施例中，在选取出目标发光单元之后，可以通过设置该目标发光单元的电流值完成显示屏亮度的校正，提升屏幕亮度的一致性，从而提高用户视觉体验。
在一些实施例中，为了提高发光单元亮度值获取的准确性，上述步骤101具体包括：
针对每个所述发光单元：
A1、获取所述发光单元中的像素点的亮度值；
A2、将所述发光单元中的像素点的亮度值的平均值确定为所述发光单元的亮度值。
一个发光单元，其至少包含了一个像素点，当一个发光单元包含一个像素点时，一个像素点可以对应步骤102中所提到的一个灯珠，能够让背光照明更加精准，有助于解决在图像显示过程中因显示屏结构导致出现光斑或者暗点的问题。在一个发光单元中也可以包含多个像素点，例如一个发光单元包括4个像素点，其中四个像素点可以对应步骤102中所提到的一个灯珠。对于仅包含一个像素点的发光单元，该像素点的亮度值即为该发光单元像素点的亮度值。对于包含一个以上像素点的发光单元，可以先获取发光单元中所有像素点的亮度值，然后计算出所有像素点的亮度值的平均值，最后将该平均值确定为该发光单元的亮度值，以提高发光单元亮度值确定的准确性。
在一些实施例中，要准确的判断出目标发光单元，上述步骤102具体包括：
B1、根据各个所述发光单元的亮度值计算所述白色画面下的平均亮度值；
B2、基于各个所述发光单元的亮度值和所述平均亮度值确定各个所述发光单元的亮度偏差比例；
B3、将所述亮度偏差比例符合预设条件的发光单元确定为目标发光单元。
在计算出各个发光单元的亮度值之后，即可根据该亮度值计算出白色画面下的平均亮度值。具体地，可以是将各个发光单元的亮度值进行累加，获得亮度值总和，然后利用亮度值总和除以发光单元的个数，即可得到平均亮度值。计算出平均亮度值之后，可以根据各个发光单元的亮度值和平均亮度值确定出各个发光单元的亮度偏差比例。具体地，对于单个发光单元的亮度偏差比例，其计算公式可以是：亮度偏差比例＝100％*(亮度值-平均亮度值)/平均亮度值。 即将该发光单元的亮度值和平均亮度值做差，然后将做差后得到的亮度值除以平均亮度值并乘以100％。判断发光单元是否为目标发光单元的预设条件可以是：发光单元的亮度偏差比例超出预设的亮度偏差比例范围，该范围的组成包括两个值，一个值用来筛选亮度值过高的发光单元，也即亮度值远高于平均亮度值的发光单元可被筛选为目标发光单元；另一个值用来筛选亮度值过低的发光单元，也即亮度值远低于平均亮度值的发光单元可被筛选为目标发光单元。作为示例而非限定，亮度偏差比例范围可以是-5％～5％，即如果有发光单元的亮度偏差比例小于-5％或者大于5％，则可以将该发光单元作为目标发光单元。应当理解的是，亮度偏差比例范围越小，显示屏亮度校正效果越好。
在一些实施例中，要通过设置目标发光单元的电流值以对显示屏的亮度进行校正，需要准确的确定出目标发光单元的目标电流值，以提高显示屏亮度校正的精确度，上述步骤103具体包括：
C1、根据平均亮度值确定目标发光单元的目标电流值；
C2、将目标发光单元的电流值设置为目标电流值，以对显示屏亮度进行校正。
为了让所有发光单元的亮度值都趋于一致，可以将步骤B1中计算出来的平均亮度值作为目标发光单元的目标电流值，之后并根据该目标电流值设置目标发光单元的电流值，以实现对显示屏亮度的校正。
在一些实施例中，根据平均亮度值准确确定目标发光单元的目标电流值，上述步骤C1具体包括：
C11、确定显示屏的背光源的电流值和亮度值之间的线性方程；
C12、基于线性方程以及平均亮度值确定目标发光单元的目标电流值。
显示屏的背光源的亮度值和电流值之间是呈关系线性的，要拟合出该线性曲线，可以先获取不同电流值和所对应的各个亮度值，然后根据两者之间的对应关系拟合出对应的线性曲线，并推导出该线性曲线对应的线性方程。作为示例而非限定，该线性方程例如可以是Y＝aX+b，Y为亮度值，X为电流值，a为 线性参数，b为常量参数，不同品牌规格的背光源所采用的灯珠不同，其线性方程也会有所不同，可根据实际采用的灯珠确定出线性方程。确定出现性方程之后，可以根据线性方程以及平均亮度值确定目标发光单元的目标电流值。具体地，将平均亮度值代入线性方程中，从而计算出目标电流值。基于计算出来的目标电流值对目标像素点进行设置，对于亮度值低于平均亮度值的目标像素点进行亮度补偿，调高该目标像素点的电流值；对于亮度值高于平均亮度值的目标像素点进行亮度削减，调低该目标像素点的电流值，当对所有目标像素点完成电流值的设置之后，显示屏显示的白色画面亮度能够趋于一致，提升用户的视觉体验。
在一些实施例中，为了准确对目标发光单元的电流值进行设置，以校正显示屏亮度，上述步骤102具体包括：
D、利用所述显示屏的驱动设置所述目标发光单元的电流值，以对显示屏亮度进行校正。
电子设备可以通过显示屏的驱动对目标发光单元的电流值进行设置，在对应区域弥补或削弱目标发光点的亮度值，使屏幕表面亮度保持一致，提升用户视觉体验。可选的，电子设备可以通过显示屏的驱动对目标发光单元的电流值进行设置，即为电子设备可以通过显示屏的驱动将目标发光单元的电流值设置为目标电流值。
在一些实施例中，有的显示屏的驱动自带对背光源的控制功能，有的显示屏的驱动不具备对背光源的控制功能，对于这两种类型的显示屏，上述步骤D具体包括：
D1、若显示屏的驱动具备控制背光源的功能，则指示显示屏的驱动设置目标发光单元的电流值，以对显示屏亮度进行校正。
针对第一类显示屏，其驱动可以直接控制背光源，在步骤B3中确定出目标发光单元后，即可指示显示屏的驱动设置目标发光单元的电流值，以实现对显示屏亮度的校正。
D2、若显示屏的驱动不具备控制背光源的功能，则指示显示屏的驱动经由预置的微控制单元设置目标发光单元的电流值，以对显示屏亮度进行校正。
针对第二类显示屏，其驱动不具备直接控制背光源的功能，需要预先设置一个微控制单元(Microcontroller Unit，MCU)。微控制单元又称单片微型计算机(Single Chip Microcomputer)或者单片机，是把中央处理器(Central Process Unit，CPU)的频率与规格做适当缩减，并将内存(memory)、计数器(Timer)、通用串行总线(Universal Serial Bus，USB)、转换器(A/D转换器)、通用异步收发传输器(Universal Asynchronous Receiver/Transmitter，UART)、可编程逻辑控制器(Programmable Logic Controller，PLC)以及直接存储器访问(Direct Memory Access，DMA)等周边接口，甚至液晶显示器(Liquid Crystal Display，LCD)驱动电路都整合在单一芯片上，形成芯片级的计算机，为不同的应用场合做不同组合控制。该微控制单元设置在显示屏的驱动和背光源之间，与显示屏的驱动连接，且与背光源的驱动连接。可以认为，该微控制单元是驱动与显示屏的通讯桥梁。在步骤B3中确定出目标发光单元后，即可指示显示屏的驱动经由预置的微控制单元设置目标发光单元的电流值，以实现对显示屏亮度的校正。
应理解，上述实施例中各步骤的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
为便于理解，下面以实际应用场景来说明本申请提出的显示屏亮度校正方法。
图2示出了采集到的白色画面，该白色画面中，每个发光单元包括了4个像素点，针对每个发光单元，要确定其亮度值，可以先获取该发光单元中各个像素点的亮度值，之后计算出各个像素点的亮度值的平均值，将该平均值确定为该发光单元的亮度值，以此类推，确定出所有发光单元的亮度值。
确定出各个发光单元的亮度值之后，可以先计算出白色画面下各个发光单 元亮度值的平均值，即平均亮度值，假设该平均亮度值为N’；然后基于各个发光单元的亮度值和平均亮度值确定出各个发光单元的亮度偏差比例；计算出各个发光单元的亮度偏差比例之后，可以依次判断每个发光单元的亮度偏差比例是否符合预设条件，假设预设条件是亮度偏差比例大于10％或者小于-10％的发光单元为目标发光单元，通过对每个发光单元进行筛选，最后确定出N1、N2及N3三个目标发光单元，其中N1的亮度偏差比例为18％，N2的亮度偏差比例为-16％，N3的亮度偏差比例为23％。
确定好出目标发光单元之后，可以获取当前背光源的亮度值和电流值之间的线性方程，假设该线性方程为Y＝aX+b，将N’作为目标亮度值代入方程式，计算出目标电流值X’，之后根据X’分别设置N1、N2及N3三个目标发光单元的电流值。
如果当前的显示屏的驱动具备直接控制背光源的功能，那么则指示显示屏的驱动设置N1、N2及N3三个目标发光单元的电流值，以使三个目标发光单元的电流值和其他发光单元的电流值趋于一致。
如果当前的显示屏的驱动不具备直接控制背光源的功能，则指示显示屏的驱动经由预置的微控制单元设置N1、N2及N3三个目标发光单元的电流值，以使三个目标发光单元的电流值和其他发光单元的电流值趋于一致。
由上可知，在本申请实施例中，显示屏的背光源采用矩阵式背光源，可以通过对该矩阵式背光源划分得到发光单元，再对显示屏亮度进行校正。校正的过程中，先获取显示屏在白色画面下的各个发光单元的亮度值，并根据该亮度值筛选出需要调节的目标发光单元，之后通过对目标发光单元的电流值进行设定，即对矩阵式背光源的部分区域的电流值，最终实现对显示屏亮度进行校正，能够减轻因显示屏结构导致的光斑或暗点，提升屏幕亮度的一致性，从而提高用户视觉体验。
对应于上文实施例所述的显示屏亮度校正方法，图3示出了本申请实施例提供的显示屏亮度校正装置3的结构框图，为了便于说明，仅示出了与本申请 实施例相关的部分。
参照图3，该显示屏亮度校正装置3包括：
获取模块301，用于获取显示屏在白色画面下各个发光单元的亮度值，发光单元通过对显示屏的背光源分割得到，背光源为矩阵式背光源；
确定模块302，用于根据亮度值将符合预设条件的发光单元确定为目标发光单元；
设置模块303，用于设置目标发光单元的电流值，以对显示屏亮度进行校正。
可选地，发光单元至少包括一个像素点，上述获取模块301可以包括：
亮度值获取单元，用于针对每个发光单元，获取发光单元中的像素点的亮度值；
发光单元亮度值确定单元，用于将发光单元中的像素点的亮度值的平均值确定为发光单元的亮度值。
可选地，上述确定模块302可以包括：
平均亮度值计算单元，用于根据各个发光单元的亮度值计算白色画面下的平均亮度值；
亮度偏差比例确定单元，用于基于各个发光单元的亮度值和平均亮度值确定各个发光单元的亮度偏差比例；
目标发光单元确定单元，用于将亮度偏差比例符合预设条件的发光单元确定为目标发光单元。
可选地，上述设置模块303可以包括：
目标电流值确定单元，用于根据平均亮度值确定目标发光单元的目标电流值；
第一设置单元，用于将目标发光单元的电流值设置为目标电流值，以对显示屏亮度进行校正。
可选地，上述目标发光单元确定单元还可以包括：
线性方程确定子单元，确定显示屏的背光源的电流和亮度值之间的线性方程；
目标电流值确定子单元，用于基于线性方式、平均亮度值以及目标发光单元的当前电流值确定目标发光单元的目标电流值。
可选地，上述设置模块303可以包括：
第二设置单元，用于利用显示屏的驱动设置目标发光单元的电流值，以对显示屏亮度进行校正。
可选地，上述第二设置单元可以包括：
电流值第一设置子单元，用于若显示屏的驱动具备控制背光源的功能，则指示显示屏的驱动设置目标发光单元的电流值，以对显示屏亮度进行校正；
电流值第二设置子单元，用于若显示屏的驱动不具备控制背光源的功能，则指示显示屏的驱动经由预置的微控制单元设置目标发光单元的电流值，以对显示屏亮度进行校正。
由上可知，在本申请实施例中，显示屏的背光源采用矩阵式背光源，可以通过对该矩阵式背光源划分得到发光单元，再对显示屏亮度进行校正。校正的过程中，先获取显示屏在白色画面下的各个发光单元的亮度值，并根据该亮度值筛选出需要调节的目标发光单元，之后通过对目标发光单元的电流值进行设定，即对矩阵式背光源的部分区域的电流值，最终实现对显示屏亮度进行校正，能够减轻因显示屏结构导致的光斑或暗点，提升屏幕亮度的一致性，从而提高用户视觉体验。
需要说明的是，上述装置/单元之间的信息交互和执行过程等内容，由于与本申请方法实施例基于同一构思，其具体功能及带来的技术效果，具体可参见方法实施例部分，此处不再赘述。
图4为本申请一实施例提供的电子设备的结构示意图。如图4所示，该实施例的电子设备4包括：至少一个处理器40(图4中仅示出一个)处理器、存储器41以及存储在存储器41中并可在至少一个处理器40上运行的计算机程序 42，处理器40执行计算机程序42时实现上述任意健身方案生成方法实施例中的步骤，例如图1所示出的步骤101-104。
所称处理器40可以是中央处理单元(Central Processing Unit，CPU)，该处理器40还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
存储器41在一些实施例中可以是电子设备4的内部存储单元，例如电子设备4的硬盘或内存。存储器41在另一些实施例中也可以是电子设备4的外部存储设备，例如电子设备4上配备的插接式硬盘，智能存储卡(Smart Media Card，SMC)，安全数字(Secure Digital，SD)卡，闪存卡(Flash Card)等。进一步地，存储器41还可以既包括终端设备4的内部存储单元也包括外部存储设备。存储器41用于存储操作装置、应用程序、引导装载程序(BootLoader)、数据以及其他程序等，例如计算机程序的程序代码等。存储器41还可以用于暂时地存储已经输出或者将要输出的数据。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，仅以上述各功能单元、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单元、模块完成，即将所述装置的内部结构划分成不同的功能单元或模块，以完成以上描述的全部或者部分功能。实施例中的各功能单元、模块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。另外，各功能单元、模块的具体名称也只是为了便于相互区分，并不用于限制本申请的保护范围。上述系统中单元、模块的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
本申请实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现可实现上述各个方法实施例中的步骤。
本申请实施例提供了一种计算机程序产品，当计算机程序产品在移动终端上运行时，使得移动终端执行时实现可实现上述各个方法实施例中的步骤。
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，本申请实现上述实施例方法中的全部或部分流程，可以通过计算机程序来指令相关的硬件来完成，所述的计算机程序可存储于一计算机可读存储介质中，该计算机程序在被处理器执行时，可实现上述各个方法实施例的步骤。其中，所述计算机程序包括计算机程序代码，所述计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。所述计算机可读介质至少可以包括：能够将计算机程序代码携带到拍照装置/电子设备的任何实体或装置、记录介质、计算机存储器、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、电载波信号、电信信号以及软件分发介质。例如U盘、移动硬盘、磁碟或者光盘等。在某些司法管辖区，根据立法和专利实践，计算机可读介质不可以是电载波信号和电信信号。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述或记载的部分，可以参见其它实施例的相关描述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的实施例中，应该理解到，所揭露的装置/网络设备和方法，可以通过其它的方式实现。例如，以上所描述的装置/网络设备实施例仅仅是示 意性的，例如，所述模块或单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通讯连接可以是通过一些接口，装置或单元的间接耦合或通讯连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
以上所述实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围，均应包含在本申请的保护范围之内。
Claims (10)
- 一种显示屏亮度校正方法，其特征在于，该方法包括：获取显示屏在白色画面下各个发光单元的亮度值，所述发光单元通过对所述显示屏的背光源分割得到，所述背光源为矩阵式背光源；根据所述亮度值将符合预设条件的所述发光单元确定为目标发光单元；设置所述目标发光单元的电流值，以对显示屏亮度进行校正。
- 如权利要求1所述的显示屏亮度校正方法，其特征在于，所述发光单元至少包括一个像素点，所述获取显示屏在白色画面下各个发光单元的亮度值，包括：针对每个所述发光单元：获取所述发光单元中的像素点的亮度值；将所述发光单元中的像素点的亮度值的平均值确定为所述发光单元的亮度值。
- 如权利要求1所述的显示屏亮度校正方法，其特征在于，所述根据所述亮度值将符合预设条件的所述发光单元确定为目标发光单元，包括：根据各个所述发光单元的亮度值计算所述白色画面下的平均亮度值；基于各个所述发光单元的亮度值和所述平均亮度值确定各个所述发光单元的亮度偏差比例；将所述亮度偏差比例符合预设条件的发光单元确定为目标发光单元。
- 如权利要求3所述的显示屏亮度校正方法，其特征在于，所述设置所述目标发光单元的电流值，以对显示屏亮度进行校正，包括：根据所述平均亮度值确定所述目标发光单元的目标电流值；将所述目标发光单元的电流值设置为所述目标电流值，以对显示屏亮度进行校正。
- 如权利要求4所述的显示屏亮度校正方法，其特征在于，所述根据所述 目标亮度值确定所述目标发光单元的目标电流值，包括：确定所述显示屏的背光源的电流值和亮度值之间的线性方程；基于所述线性方程以及所述平均亮度值确定所述目标发光单元的目标电流值。
- 如权利要求1-5任意一项所述的显示屏亮度校正方法，其特征在于，所述设置所述目标发光单元的电流值，以对显示屏亮度进行校正，包括：利用所述显示屏的驱动设置所述目标发光单元的电流值，以对显示屏亮度进行校正。
- 如权利要求6所述的显示屏亮度校正方法，其特征在于，所述利用所述显示屏的驱动设置所述目标发光单元的电流值，以对显示屏亮度进行校正，包括：若所述显示屏的驱动具备控制所述背光源的功能，则指示所述显示屏的驱动设置所述目标发光单元的电流值，以对显示屏亮度进行校正；若所述显示屏的驱动不具备控制所述背光源的功能，则指示所述显示屏的驱动经由预置的微控制单元设置所述目标发光单元的电流值，以对显示屏亮度进行校正。
- 一种显示屏亮度校正装置，其特征在于，包括：获取模块，用于获取显示屏在白色画面下各个发光单元的亮度值，所述发光单元通过对所述显示屏的背光源分割得到，所述背光源为矩阵式背光源；确定模块，用于根据所述亮度值将符合预设条件的所述发光单元确定为目标发光单元；设置模块，用于设置所述目标发光单元的电流值，以对显示屏亮度进行校正。
- 一种电子设备，包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序，其特征在于，所述处理器执行所述计算机程序时实现如权利要求1至7任一项所述的显示屏亮度校正方法。
- 一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1至7任一项所述的显示屏亮度校正方法。
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