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WO2018132987A1 - Procédé de réglage de luminance et terminal - Google Patents

Procédé de réglage de luminance et terminal Download PDF

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Publication number
WO2018132987A1
WO2018132987A1 PCT/CN2017/071608 CN2017071608W WO2018132987A1 WO 2018132987 A1 WO2018132987 A1 WO 2018132987A1 CN 2017071608 W CN2017071608 W CN 2017071608W WO 2018132987 A1 WO2018132987 A1 WO 2018132987A1
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WO
WIPO (PCT)
Prior art keywords
image
pixel
value
partition
partitions
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/071608
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English (en)
Chinese (zh)
Inventor
张涛
巫红英
李昌禄
李蒙
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Priority to PCT/CN2017/071608 priority Critical patent/WO2018132987A1/fr
Priority to CN201780057986.8A priority patent/CN109716427A/zh
Publication of WO2018132987A1 publication Critical patent/WO2018132987A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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

Definitions

  • the present application relates to the field of image processing technologies, and in particular, to a brightness adjustment method and a terminal.
  • HDR High-Dynamic Range
  • Scope based on this, people have proposed a light-emitting diode (LED)-based backlight dynamic dimming technology based on liquid crystal display, that is, according to the content of different regions of the image to adjust the brightness of its corresponding backlight LED lamp, the technology is The most effective way to increase the dynamic range of the display, reduce energy consumption and improve display quality.
  • LED light-emitting diode
  • the LED area backlight dynamic dimming algorithm has a maximum value method, an average value method, and a root mean square method.
  • the maximum value method has poor energy saving effect and cannot effectively improve image contrast, and the average method makes adjustment.
  • the image after the light will have more serious distortion, and the rms method can not improve the image contrast.
  • the dimming effect of the LED area backlight dynamic dimming algorithm is better, and the application is more widely used.
  • Function inversion method, cumulative distribution function threshold method and error correction method wherein the mapping function inversion method and the cumulative distribution function threshold method for the overall low brightness picture, the image after dimming will have obvious distortion, and the error correction The law is not suitable for high-contrast images, and the energy saving rate is not high.
  • the embodiment of the present application provides a brightness adjustment method and a terminal, which improves the image display contrast while reducing the probability of image distortion and improving the image display quality.
  • the embodiment of the present application provides a brightness adjustment method, which is applied to a terminal provided with a liquid crystal display (LCD) using a light emitting diode (LED) as a backlight module, and the method includes:
  • BDR backlight dimming ratio
  • determining a plurality of image partitions of the input image according to a preset partitioning strategy determining a backlight dimming rate BDR of each image partition; and calculating the grayscale maximum value according to the BDR and the pixel points in the respective image partitions
  • Each a backlight luminance value BL of the image partition adjusting LED backlight brightness of the respective image partitions according to BL values of the respective image partitions, and determining each pixel point in each image partition according to BL values of the respective image partitions a target brightness value, and adjusting brightness of the liquid crystal display according to the target brightness value.
  • the determining the backlight dimming rate BDR of each image partition includes:
  • BDG backlight dimming gray level
  • the backlight dynamic dimming method disclosed in the possible design in addition to improving the image display contrast while reducing the probability of image distortion and improving the image display quality, adopts the largest of the three components per pixel.
  • the value as the pixel point gray value accurately reflects the maximum intensity of each pixel point, avoiding the occurrence of clipping distortion in the process of adjusting the brightness of the liquid crystal display according to the target brightness value.
  • the determining, according to the BDG of each image partition, the backlight dimming rate BDR of each image partition includes:
  • the BDR is determined based on the following formula:
  • BGR(i,j) is the backlight dimming gray level of the image partition (i,j)
  • BDR(i,j) is the backlight dimming rate of the image partition (i,j)
  • a and b are presets.
  • the coefficient is related to the content of the input image of the liquid crystal display and the ambient brightness.
  • the calculating the backlight dimming gray level BDG of each image partition according to the gray value of each pixel in each image partition includes:
  • the brightness adjustment method disclosed in the possible design in addition to improving the image display contrast while reducing the probability of image distortion and improving the image display quality, adopts a preset maximum inter-class variance method according to each image.
  • the brightness distribution of the partition adaptively determines the segmentation threshold, and the BDGs of different partitions are obtained by different segmentation thresholds, which reduces the computational complexity, effectively enhances the detailed information reflecting the dark parts of the image, and further improves the image contrast.
  • the calculating the brightness variation coefficient of each image partition according to the segmentation threshold of each image partition includes:
  • the number of pixel points whose gray value is 1 in each image partition is the first data, and the number of pixel points whose gray value is 0 is the second data.
  • the calculating the brightness variation coefficient of each image partition according to the first data and the second data includes:
  • the brightness variation coefficient is calculated based on the following formula:
  • K(i,j) is the luminance variation coefficient of the image partition (i,j)
  • N 1 (i,j) is the first data of the image partition (i,j)
  • N 0 (i,j) is the image The second data of the partition (i, j).
  • the calculating the backlight brightness value BL of each image partition according to the BDR and the gray level maximum value of the pixel points in the respective image partitions includes:
  • the BL value is calculated based on the following formula:
  • BL(i,j) is the backlight luminance value of the image partition (i,j)
  • I max (i,j) is the grayscale maximum of the image partition (i,j).
  • the target brightness value of each pixel in each image partition is determined according to a BL value of each image partition, and the brightness of the liquid crystal display is adjusted according to the target brightness value, including:
  • the liquid crystal pixel compensation process is performed on each pixel point in each of the image partitions according to the BL value after the smoothing of the respective image partitions, and the target brightness value of each pixel point is determined, including :
  • Determining a target luminance component Y value of each pixel point by performing liquid crystal pixel compensation processing on the luminance component Y of each pixel point in each of the image partitions according to the BL value after the smoothing of the respective image partitions.
  • the brightness adjustment method disclosed in the possible design in addition to improving the image display contrast while reducing the probability of image distortion and improving the image display quality, firstly smoothing the BL values of the respective image partitions, Further, the distortion of the image is further weakened, and each pixel is converted into RBG to YCbCr before the liquid crystal compensation process is performed, and then the liquid crystal compensation is performed on the luminance component Y, thereby reducing the defect of apparent partitioning when the brightness is adjusted and displayed. LCD compensation can improve the display quality of the dimmed image and further enhance the image contrast.
  • the liquid crystal pixel compensation process is performed on the luminance component Y of each pixel in each of the image partitions according to the BL value after the smoothing of the respective image partitions, and the target of each pixel is determined.
  • the luminance component Y value including:
  • the liquid crystal pixel compensation processing is performed based on the following formula:
  • Y in the luminance component of each pixel in the respective image section Y, Y out of the target luminance component of each pixel of the liquid crystal after each image compensated partition Y, ⁇ is the gamma factor.
  • an embodiment of the present application discloses a terminal, where the terminal has a function of implementing a behavior of a terminal in the foregoing method design.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the terminal includes a processor configured to support the terminal in performing the corresponding functions of the above methods. Further, the terminal may further include a receiver and a transmitter, and the receiver and the transmitter are used for communication between the terminal and other devices such as a display system of a liquid crystal display with the LED as a backlight module. Further, the terminal may further include a memory for coupling with the processor, which holds program instructions and data necessary for the device.
  • the embodiment of the present application discloses a computer readable storage medium, where the computer readable storage medium stores program code for execution by a computer device, where the program code specifically includes an execution instruction, where the execution instruction is used for Some or all of the steps described in any of the methods of the first aspect of the embodiments of the present application are performed.
  • determining a plurality of image partitions of the input image according to a preset partitioning strategy determining a backlight dimming rate BDR of each image partition; and calculating the grayscale maximum value according to the BDR and the pixel points in the respective image partitions a backlight brightness value BL of each image partition; adjusting LED backlight brightness of each image partition according to BL values of the respective image partitions, and determining each pixel point in each image partition according to BL values of the respective image partitions a target brightness value, and adjusting a brightness of the liquid crystal display according to the target brightness value.
  • FIG. 1A is a schematic flow chart of a brightness adjustment method disclosed in an embodiment of the present application.
  • FIG. 1B is a schematic flowchart of S102 in the flow of the brightness adjustment method described in FIG. 1A disclosed in the embodiment of the present application;
  • 1C is a schematic diagram of a method for calculating a backlight dimming gray level BDG disclosed in an embodiment of the present application
  • 1D is a schematic diagram of a liquid crystal compensation calculation method disclosed in an embodiment of the present application.
  • FIG. 2A is a functional block diagram of a terminal disclosed in an embodiment of the present application.
  • FIG. 2B is a schematic structural diagram of a terminal disclosed in an embodiment of the present application.
  • FIG. 1A is a schematic flowchart of a brightness adjustment method according to an embodiment of the present disclosure.
  • the method is applied to a liquid crystal display (Liquid Crystal) provided with a light emitting diode (LED) as a backlight module.
  • Display, LCD) terminal the terminal may include a smart phone, a tablet computer, a television, a wearable device, and the like, and an electronic device provided with an LED liquid crystal display.
  • the brightness adjustment method includes:
  • the terminal determines, according to a preset partitioning policy, multiple image partitions of the input image.
  • the input image is virtually divided into 24 ⁇ 42 partitions according to a preset partitioning strategy, and the size of each partition is 45 ⁇ 45.
  • the terminal determines a backlight dimming ratio (BDR) of each image partition
  • FIG. 1B is a schematic flowchart of determining, by the terminal, a backlight dimming rate BDR of each image partition.
  • the method for determining, by the terminal, a backlight dimming rate BDR of each image partition includes:
  • the terminal calculates three components of each pixel in each image partition, and uses a maximum value of three components of the pixel as a gray value of the pixel.
  • each pixel The three components of each pixel are red (Red, R), green (Green, G), and blue (Blue, B).
  • the maximum value of the three components of each pixel in each image partition is used as a pixel point gray value, and the image is converted into a gray image according to the gray value of the pixel point, and the transformed gray is transformed.
  • the three component values of each pixel in the degree image are the same, and are the maximum of the three components.
  • the specific implementation manner of converting the RGB image into the grayscale image may be:
  • I gray (m,n) max ⁇ R(m,n), G(m,n),B(m,n) ⁇
  • I gray (m, n) is the gradation value of the pixel at (m, n).
  • the gray value of the pixel that is, converted into a grayscale image. Thereafter, the gray values of the three components of the pixel points R, G, and B are all 70.
  • the terminal calculates a backlight dimming gray level (BDG) of each image partition according to a gray value of each pixel in each image partition.
  • BDG backlight dimming gray level
  • the segmentation threshold is a segmentation threshold T of the image target foreground and the background.
  • the specific implementation manner of calculating the segmentation threshold of each image partition by using a preset maximum inter-class variance method according to the gray value of each pixel in each image partition may be:
  • the preset maximum inter-class variance method firstly records the ratio of the number of pixel points N 0 whose gray value is smaller than T to the total pixel point of the image partition i ⁇ j as w 0 , and the N 0 pixel points
  • the average gray value is ⁇ 0 ;
  • the ratio of the number of pixel points N 1 whose gray value is greater than T to the total pixel point of the image partition i ⁇ j is denoted as w 1 , and the average gray value of the N 1 pixel points is ⁇ 1
  • the inter-class variance of the image is recorded as g, and the size of each partition is recorded as i ⁇ j; then the division threshold T of each image partition is calculated by the following formula:
  • the threshold value corresponding to the maximum variance between the classes is obtained by the traversal method, that is, the obtained segmentation threshold T.
  • the implementation manner of calculating the brightness variation coefficient of each image partition according to the segmentation threshold of each image partition may be:
  • the number of points is the first data, that is, N 1
  • the number of the pixel points whose pixel point gray value is 0 is the second data, that is, N 0 ; according to the first data N 1 and the first
  • the second data N 0 calculates the brightness variation coefficient K of each image partition by the following formula:
  • K(i,j) is the luminance variation coefficient of the image partition (i,j)
  • N 1 (i,j) is the first data of the image partition (i,j)
  • N 0 (i,j) is the image The second data of the partition (i, j).
  • the BDGs of the respective image partitions are determined according to the luminance variation coefficients of the respective image partitions.
  • the specific implementation manner of determining the BDG of each image partition according to the brightness variation coefficient of each image partition may be:
  • the BDGs of the respective image partitions are grayscale values corresponding to K% of all pixel points of the respective image partitions, according to the brightness variation coefficient K of the certain image partition and the Defining a BDG, determining the BDG of the image partition, wherein the gray histogram in the figure is the maximum value of the three components of each pixel in the image partition as a pixel point gray value, according to each The gray value of the pixel points is the statistics of the gray value distribution of the image partition.
  • the BDG when the BDG is large, it indicates that most of the pixels of the image partition have a large gray value, and the partition is a highlighted area; and when the BDG is small, the image partition is indicated. Most of the pixels are in the low gray level range, which is a low light area. Therefore, the BDG can be used as a standard for dividing the image partitions of the input image into high brightness, intermediate brightness and dark areas.
  • the terminal determines, according to the BDG of each image partition, a backlight dimming rate BDR of each image partition;
  • the BDR is calculated based on the following formula:
  • BGR(i,j) is the backlight dimming gray level of the image partition (i,j)
  • BDR(i,j) is the backlight of the image partition (i,j)
  • the dimming rate, a, b are preset coefficients, which are related to the content of the input image of the liquid crystal display and the ambient brightness.
  • the terminal calculates a backlight brightness value (Backlight, BL) of each image partition according to the BDR and a gray maximum value of a pixel point in each image partition;
  • the BL is calculated based on the following formula:
  • BL(i,j) is the backlight luminance value of the image partition (i,j)
  • I max (i,j) is the grayscale maximum of the image partition (i,j).
  • the terminal adjusts, according to a BL value of each image partition, an LED backlight brightness of each image partition.
  • the specific implementation manner that the terminal adjusts the brightness of the LED backlight of each image partition according to the BL value of each image partition may be:
  • the BL values of the respective image partitions are controlled by a Pulse Width Modulation (PWM) technique to control the brightness and darkness of the backlight unit LEDs corresponding to the respective image partitions.
  • PWM Pulse Width Modulation
  • the terminal determines, according to a BL value of each image partition, a target brightness value of each pixel in each image partition, and adjusts a brightness of the liquid crystal display according to the target brightness value.
  • the terminal determines, according to the BL value of each image partition, a target brightness value of each pixel in each image partition, and the specific implementation manner of adjusting the brightness of the liquid crystal display according to the target brightness value may be Yes:
  • each pixel of each image partition needs to be converted into RBG to YCbCr to obtain each pixel in each image partition.
  • the brightness component Y of the point secondly, because the area control of the light source will cause the backlight brightness to be no longer uniform, and the light mixing effect of the backlight causes the light of different image partitions to affect each other, which affects the light reaching the liquid crystal display. Strong distribution and ultimately affect the accuracy of liquid crystal pixel brightness compensation. If the difference in backlight brightness between adjacent partitions is large, the liquid crystal pixel compensated image will have a significant "block effect".
  • each image partition smoothing process is subjected to liquid crystal pixel compensation processing for the luminance component Y of each pixel point of each image partition to determine a target luminance component Y value of each pixel point, and is adjusted according to the target luminance value.
  • the opening degree of each liquid crystal molecule of the liquid crystal display adjusts the brightness of each liquid crystal pixel.
  • Y is the luminance component of the color in YCbCr
  • Cb and Cr are the concentration offset components of blue and red.
  • the target luminance component Y value Y out of each pixel point is calculated based on the following formula:
  • gamma a gamma coefficient
  • the brightness adjustment method disclosed in the embodiment of the present application determines a plurality of image partitions of the input image according to a preset partitioning strategy; determining a backlight dimming rate BDR of each image partition; and determining, according to the BDR, gray of pixels in each image partition a maximum value of the backlight luminance values BL of the respective image partitions; adjusting LED backlight brightness of the respective image partitions according to BL values of the respective image partitions, and determining the respective images according to BL values of the respective image partitions Partition a target brightness value of each pixel point, and adjusting a brightness of the liquid crystal display according to the target brightness value.
  • RMSE calculates the mean square error of all pixel values of the original image and the dimmed image, which reflects the change of the corresponding pixel color between the two images, based on the following formula:
  • Y in (m,n) and Y out (m,n) are the image pixel brightness before and after dimming, respectively.
  • PSNR is used as another image fidelity metric based on the following formula:
  • the image contrast enhancement intensity percentage ⁇ E is calculated based on the following formula:
  • H 90 is a gray level BDG corresponding to 90% of all pixels
  • L 10 is a gray level BDG corresponding to 10% of all pixels
  • CR is the contrast of the dimmed image
  • CR 0 is the original input image Contrast
  • ⁇ E is the percentage of image contrast enhancement intensity.
  • Table 1 records the comparison of the RMSE and PSNR of the CDF threshold method and the solution described in the embodiment of the present application on the image area backlight dimming.
  • Table 2 records the CDF threshold method and the present application.
  • the average value of the PSNR of the image after the dimming of the brightness adjustment method in the embodiment of the present application is 32.38 dB>30 dB, so that the image after dimming can be guaranteed.
  • High display quality the above data demonstrates that the method can also effectively improve image contrast with an average improvement of 14.71%.
  • the image quality is poor after backlight dimming and liquid crystal compensation by CDF threshold method, and only the contrast of high-brightness image is obviously improved, but the improvement is only 3.09%. Therefore, the solution described in the embodiment of the present application improves the image display contrast while reducing the probability of image distortion, thereby improving the image display quality.
  • the terminal includes corresponding hardware structures and/or software modules for performing various functions.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for each particular application to implement the described functionality, but such implementation should not be considered to be beyond the scope of the application.
  • the embodiment of the present application may perform functional unit division on a terminal according to the foregoing method example, for example, corresponding to each Each function divides each functional unit, and it is also possible to integrate two or more functions into one processing unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.
  • FIG. 2A shows a possible structural diagram of the terminal involved in the above embodiment.
  • the terminal 200 includes a processing unit 202 and a communication unit 203.
  • the processing unit 202 is configured to perform control management on the actions of the terminal.
  • the processing unit 202 is configured to support the terminal to perform steps S101 to 104 in FIG. 1 , steps S1021 to 1023 in FIG. 2 and/or for the techniques described herein.
  • Other processes are used to support communication between the terminal and other devices such as an LED display.
  • the terminal may further include a storage unit 201 for storing program codes and data of the terminal.
  • the processing unit 202 may be a processor or a controller, such as a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 203 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a collective name and can include one or more interfaces.
  • the storage unit 201 can be a memory.
  • the terminal involved in the embodiment of the present application may be the terminal shown in FIG. 2B.
  • the terminal 210 includes a processor 212, a communication interface 213, a memory 211, and an LED liquid crystal display 214.
  • the terminal 210 may further include a bus 215.
  • the communication interface 213, the processor 212, the memory 211, and the LED liquid crystal display 214 may be connected to each other through a bus 215;
  • the bus 215 may be a Peripheral Component Interconnect (PCI) bus or an extended industry standard structure ( Extended Industry Standard Architecture (EISA) bus.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus 215 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 2B, but it does not mean that there is only one bus or one type of bus.
  • the terminal shown in FIG. 2A or FIG. 2B can also be understood as a device for brightness adjustment, which is not limited in the embodiment of the present application.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center By wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) to another website site, computer, Transfer by server or data center.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

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Abstract

La présente invention concerne un procédé de réglage de luminance et un terminal. Le procédé est appliqué au terminal pourvu d'un écran d'affichage à cristaux liquides à l'aide d'une DEL en tant que module de rétroéclairage, et consiste à : déterminer une pluralité de partitions d'image d'une image d'entrée selon une stratégie de partition prédéfinie ; déterminer un taux de gradation de rétroéclairage (BDR) de chaque partition d'image ; calculer une valeur de luminance de rétroéclairage (BL) de chaque partition d'image selon la BDR et une valeur maximale de gris de pixels dans chaque partition d'image ; régler la luminance de rétroéclairage de DEL de chaque partition d'image selon la valeur de BL de chaque partition d'image ; et déterminer une valeur de luminance cible de chaque pixel dans chaque partition d'image selon la valeur de BL de chaque partition d'image, et déterminer la luminance de l'écran d'affichage à cristaux liquides selon la valeur de luminance cible. Au moyen des modes de réalisation de la présente invention, un contraste d'affichage d'image peut être amélioré, la probabilité de distorsion d'image peut être réduite, et la qualité d'affichage d'image peut être améliorée.
PCT/CN2017/071608 2017-01-18 2017-01-18 Procédé de réglage de luminance et terminal Ceased WO2018132987A1 (fr)

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WO2022062709A1 (fr) * 2020-09-28 2022-03-31 京东方科技集团股份有限公司 Procédé, appareil et dispositif de compensation d'écran d'affichage, et carte de circuit d'attaque d'écran d'affichage
CN114974134A (zh) * 2021-02-25 2022-08-30 广州视源电子科技股份有限公司 显示设备的背光控制方法、装置、存储介质和智能交互平板
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CN116168652A (zh) * 2022-12-26 2023-05-26 武汉Tcl集团工业研究院有限公司 图像显示方法、装置、电子设备及计算机可读存储介质
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