Pixel brightness compensation method, device, computer medium and display device

Abstract

The application discloses a pixel brightness compensation method, device, computer medium and display equipment, the method comprises the following steps: determining the distortion degree of backlight partition; comparing the distortion degree with the preset threshold value; when the distortion degree is greater than the preset threshold value, adjusting the brightness enhancement coefficient according to the preset rule, and returning to execute the target brightness of each pixel point of the backlight partition based on the total number, the initial brightness of each pixel point and the brightness enhancement coefficient; when the distortion degree is less than or equal to the preset threshold value, the brightness enhancement coefficient is determined as the target brightness enhancement coefficient. Through the above method, the brightness enhancement coefficient is continuously adjusted to obtain the target brightness enhancement coefficient when the distortion degree is less than or equal to the preset threshold value, and then the target brightness corresponding to each pixel is determined, so that more pixel points are displayed with maximum brightness, without causing excessive distortion of the picture, while ensuring the contrast of the picture and the details of the picture, and improving the display effect of the product.

Description

Technical Field

[0001] This invention belongs to the technical field of display screens, and particularly relates to pixel brightness compensation methods, devices, computer media, and display equipment. Background Technology

[0002] Local dimming is a backlight system technology for displays. Local dimming reduces the overall brightness of the backlight, but to minimize the loss of image brightness and detail caused by this reduction, pixel compensation algorithms are used to compensate for the brightness according to certain rules. This process not only restores image brightness but also helps increase image contrast. However, pixel compensation values ​​are not unlimited. Taking an 8-bit display system as an example, the maximum compensation grayscale level is 255, which will eventually lead to image clipping due to insufficient compensation.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] This application provides a pixel brightness compensation method, apparatus, computer medium, and display device, which can solve the problem of image display distortion during pixel compensation in related technologies to a certain extent.

[0005] According to one aspect of the embodiments of this application, a pixel brightness compensation method is provided, the method comprising:

[0006] Determine the total number N of pixels corresponding to the backlight partition. all The initial brightness of each pixel in the backlight zone and the brightness enhancement coefficient corresponding to the backlight zone;

[0007] Based on the total number N all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone.

[0008] Determine the number N of pixels in the backlight zone whose target brightness equals the maximum brightness. over ;

[0009] Based on the total number N all The number of N over Determine the distortion of the backlight zones;

[0010] Compare the distortion level with a preset threshold;

[0011] When the distortion exceeds a preset threshold, adjust the brightness enhancement coefficient according to preset rules, and return to the execution state based on the total number N. allThe initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone.

[0012] When the distortion is less than or equal to the preset threshold, the brightness enhancement coefficient is determined as the target brightness enhancement coefficient.

[0013] In another embodiment provided in this application, based on the total number N all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone, including: calculating the total initial brightness of all pixels in the backlight zone based on the initial brightness of each pixel; and calculating the target brightness of each pixel based on the total number N. all Combine the initial total brightness to determine the average brightness of the backlight zones; according to the formula: P′(x,y)=A×P local +P(x,y), calculate the target brightness; where P′(x,y) is the target brightness, A is the brightness enhancement coefficient, and P... local P(x,y) represents the average brightness, and P(x,y) represents the initial brightness.

[0014] In another embodiment provided in this application, determining the brightness enhancement coefficient corresponding to the backlight partition includes: obtaining the correction coefficient corresponding to the backlight partition; determining the highest display brightness of the pixel corresponding to the backlight partition; and determining the brightness enhancement coefficient based on the average brightness, the correction coefficient, and the highest display brightness.

[0015] In another embodiment provided in this application, the brightness enhancement coefficient is determined based on the average brightness, the correction factor, and the maximum display brightness, including: according to the formula: The luminance enhancement coefficient is calculated; where A is the luminance enhancement coefficient, and P is the luminance enhancement coefficient. max For maximum display brightness, P local denoted as average brightness, and k as a correction factor.

[0016] In another embodiment provided in this application, adjusting the brightness enhancement coefficient according to a preset rule includes: recording the number of times the distortion is greater than a preset threshold; obtaining the preset correction difference of the backlight zone; calculating the correction coefficient corresponding to each time the distortion is greater than the preset threshold based on the correction coefficient, the number of times, and the preset correction difference; and returning to execute the determination of the brightness enhancement coefficient based on the average brightness, the correction coefficient, and the maximum display brightness.

[0017] In another embodiment provided in this application, based on the total number N all The number of N over Determine the distortion of the backlight zones, including: according to the formula: The distortion CP is calculated.

[0018] In another embodiment provided in this application, the method further includes: determining the grayscale signal corresponding to each pixel based on the correspondence between the target brightness and the grayscale signal; and inputting the corresponding grayscale signal to each pixel so that each pixel displays the corresponding target brightness.

[0019] According to one aspect of the embodiments of this application, a pixel brightness compensation device is provided, comprising:

[0020] The information determination module is used to determine the total number N of pixels corresponding to the backlight partition. all The initial brightness of each pixel in the backlight zone and the brightness enhancement coefficient corresponding to the backlight zone;

[0021] The target brightness determination module is used to determine the brightness based on the total number N. all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone.

[0022] The pixel determination module is used to determine the number N of pixels in the backlight zone whose target brightness is equal to the maximum brightness. oven ;

[0023] The distortion determination module is used to determine the distortion based on the total number N. all The number of N over Determine the distortion of the backlight zones;

[0024] The distortion comparison module is used to compare the distortion with a preset threshold.

[0025] The first execution module is used to adjust the brightness enhancement coefficient according to preset rules when the distortion exceeds a preset threshold, and to return the execution result based on the total number N. all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone.

[0026] The second execution module is used to determine the brightness enhancement coefficient as the target brightness enhancement coefficient when the distortion is less than or equal to a preset threshold.

[0027] According to one aspect of the embodiments of this application, a computer medium is provided, on which a computer program is stored, which, when executed by a processor, implements any of the pixel brightness compensation methods provided in this application.

[0028] According to one aspect of the embodiments of this application, a display device is provided, including: a display screen; and at least one processor and a memory, wherein the at least one processor is configured to process a computer program stored in the memory to implement any of the pixel brightness compensation methods provided in this application.

[0029] In the technical solution of this application, this application is based on a total number N allThe initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone; the number N of pixels in the backlight zone whose target brightness equals the maximum brightness is determined. over Based on the total number N all The number of N over Determine the distortion level of the backlight zones; compare the distortion level with a preset threshold; when the distortion level is greater than the preset threshold, adjust the brightness enhancement coefficient according to preset rules, and return to the execution state based on the total number N. all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone. When the distortion is less than or equal to a preset threshold, the brightness enhancement coefficient is determined as the target brightness enhancement coefficient. Through the above method, this application continuously adjusts the brightness enhancement coefficient to obtain the target brightness enhancement coefficient when the distortion is less than or equal to the preset threshold, thereby determining the corresponding target brightness of each pixel. This allows more pixels to be displayed at maximum brightness without causing image distortion, while ensuring image contrast and detail, thus improving the display effect of the product.

[0030] It should be understood in this application that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0032] Figure 1 The schematic diagram illustrates the structure of the display device during local dimming.

[0033] Figure 2 The schematic diagram illustrates a flowchart of a pixel brightness compensation method provided in an embodiment of this application.

[0034] Figure 3 This illustration shows the effect of displaying an image without pixel compensation.

[0035] Figure 4 This illustration shows the effect of displaying an image when the display device performs pixel compensation but does not correct the brightness enhancement factor.

[0036] Figure 5 This diagram illustrates the effect of a display device performing pixel compensation and correcting the brightness enhancement factor on the displayed image.

[0037] Figure 6 The schematic diagram illustrates the structure of a pixel brightness compensation device provided in an embodiment of this application.

[0038] Figure 7 The schematic diagram illustrates the structure of a display device provided in one embodiment of this application.

[0039] Figure 8 A schematic block diagram of a computer system for implementing the display device of the present application is shown. Detailed Implementation

[0040] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0041] Figure 1 The schematic diagram illustrates the structure of the display device during local dimming.

[0042] like Figure 1 As shown, local dimming requires the image input module 110 to extract pixel data and brightness features from the input image. Pixel data includes the brightness of each pixel and the number of pixels in the image, while brightness features include average brightness, maximum brightness, and grayscale histogram. The pixel compensation module 120 determines the pixel compensation value for each pixel based on the pixel data of the input image sent by the image input module 110, obtaining compensated pixel data. The pixel compensation module 120 then sends the compensated pixel data to the liquid crystal panel 140 for display. The backlight adjustment module 130 determines the backlight brightness based on the brightness features of the input image sent by the image input module 110. Then, the backlight adjustment module 130 establishes a diffusion model of the backlight source in the mixing cavity of the backlight module 150 to analyze and calculate the backlight distribution projected onto the liquid crystal panel 140 after backlight changes, obtaining the backlight brightness of each pixel. Finally, the image displayed on the liquid crystal panel 140 is the result of the combined effect of the adjusted backlight and the compensated pixel data.

[0043] It should be understood that the pixel brightness compensation method provided in the embodiments of this application is for pixel compensation of the input image.

[0044] like Figure 2 As shown, this application provides a pixel brightness compensation method, which includes steps S210 to S270, specifically including:

[0045] S210. Determine the total number N of pixels corresponding to the backlight partition. allThe initial brightness of each pixel in the backlight zone and the brightness enhancement coefficient corresponding to the backlight zone.

[0046] Specifically, in local dimming technology, the backlight module of the display device is divided into multiple backlight zones. By adjusting the display effect of each backlight zone, a better display effect can be achieved.

[0047] The brightness enhancement factor is a parameter used to adjust the display brightness of each pixel in the backlight zone.

[0048] After inputting the original image, this embodiment obtains the pixel data of the original image, the total number of pixels in the area corresponding to the backlight partition, the initial brightness of each pixel in the backlight partition, and the brightness enhancement coefficient corresponding to the backlight partition, in order to perform subsequent pixel brightness compensation steps.

[0049] In another embodiment provided in this application, determining the brightness enhancement coefficient corresponding to the backlight partition includes: obtaining the correction coefficient corresponding to the backlight partition; determining the highest display brightness of the pixel corresponding to the backlight partition; and determining the brightness enhancement coefficient based on the average brightness, the correction coefficient, and the highest display brightness.

[0050] Specifically, the correction factor is a parameter used to determine the brightness intensity factor. When determining the average brightness and maximum display brightness of pixels in the backlight zone, the corresponding brightness enhancement factor can be obtained by setting the value of the correction factor.

[0051] In another embodiment provided in this application, the brightness enhancement coefficient is determined based on the average brightness, the correction factor, and the maximum display brightness, including: according to the formula: The luminance enhancement coefficient is calculated; where A is the luminance enhancement coefficient, and P is the luminance enhancement coefficient. max For maximum display brightness, P local denoted as average brightness, and k as a correction factor.

[0052] For example, in an 8-bit display system, the average brightness P of all pixels in a certain backlight zone local 200 nits, maximum display brightness P max With a value of 600 nits and a correction factor k of 0.1, the brightness enhancement factor is...

[0053] In other embodiments of this application, the brightness enhancement coefficient can be determined by other calculation formulas, and this application does not limit it in this regard.

[0054] S220, Based on the total number N all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone.

[0055] Specifically, the target brightness of each pixel is determined based on the current brightness enhancement coefficient. It should be understood that adjusting the brightness enhancement coefficient will change the target brightness of each pixel accordingly until a brightness enhancement coefficient that meets the preset conditions is obtained. (Based on the total number N) all By analyzing the initial brightness of each pixel, we can obtain brightness parameters such as the average brightness, maximum brightness, and minimum brightness of each pixel in the backlight zone. Based on different display effects, different brightness parameters can be selected to determine the target brightness of the pixels. Furthermore, these brightness parameters can be processed to obtain different brightness enhancement coefficients, achieving different display effects.

[0056] In another embodiment provided in this application, based on the total number N all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone, including: calculating the total initial brightness of all pixels in the backlight zone based on the initial brightness of each pixel; and calculating the target brightness of each pixel based on the total number N. all Combine the initial total brightness to determine the average brightness of the backlight zones; according to the formula: P ′ (x,y)=A×P local +P(x,y), calculate the target brightness; where P ′ (x,y) represents the target brightness, A is the brightness enhancement coefficient, and P... local P(x,y) represents the average brightness, and P(x,y) represents the initial brightness.

[0057] Specifically, in this embodiment, the target brightness of each pixel is determined by an averaging algorithm, based on the total number N. all and total initial brightness P all Determine the average brightness of the backlight zones.

[0058] For example, P local Given a brightness of 200 nits, a brightness enhancement factor A of 0.477, and an initial brightness P(x,y) of 400 nits, then the target brightness P ′ (x,y)=0.477×200+400=495.4 nits.

[0059] S230. Determine the number N of pixels in the backlight zone whose target brightness is equal to the maximum brightness. over .

[0060] Specifically, after obtaining the target brightness, it is necessary to determine the distortion of the backlight area. If the number of pixels in the backlight area whose target brightness equals the maximum brightness is too large, it will lead to a loss of image details. Therefore, it is necessary to determine the number N of pixels in the backlight area whose target brightness equals the maximum brightness. over This is to determine whether the target brightness meets the display requirements.

[0061] S240, Based on the total number N all The number of N over Determine the distortion of the backlight zones.

[0062] Specifically, distortion is a performance parameter characterizing the image displayed by a product. Distortion can be calculated using various formulas. In this application, the formula is: The distortion CP is calculated.

[0063] For example, the total number N all The number is 50, and the quantity is N. over If the value is 10, then the distortion level is...

[0064] S250. Compare the distortion with a preset threshold.

[0065] Specifically, the preset threshold is a pre-defined threshold for distortion, such as setting the preset threshold to 2% for distortion acceptable to the human eye. Then, the distortion CP is compared with 2%, and the comparison result corresponding to the distortion is obtained.

[0066] S260. When the distortion exceeds a preset threshold, adjust the brightness enhancement coefficient according to preset rules, and return to the execution based on the total number N. all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone.

[0067] Specifically, when the distortion exceeds a preset threshold, it indicates that too many pixels are displaying brightness equal to the maximum brightness, requiring a readjustment of the brightness enhancement coefficient to determine a new target brightness. For example, by reducing the brightness enhancement coefficient, the compensated brightness for each pixel decreases, thus reducing the target brightness for each pixel and consequently decreasing the number of pixels with a target brightness equal to the maximum brightness.

[0068] In another embodiment provided in this application, adjusting the brightness enhancement coefficient according to a preset rule includes: recording the number of times the distortion is greater than a preset threshold; obtaining the preset correction difference of the backlight zone; calculating the correction coefficient corresponding to each time the distortion is greater than the preset threshold based on the correction coefficient, the number of times, and the preset correction difference; and returning to execute the determination of the brightness enhancement coefficient based on the average brightness, the correction coefficient, and the maximum display brightness.

[0069] Specifically, the preset correction difference can affect the variation range of the correction coefficient, and thus the variation range of the brightness enhancement coefficient, which in turn affects the precision of pixel brightness compensation for the input image. When the distortion is greater than the preset threshold, the correction coefficient is increased by the preset correction difference to obtain a new correction coefficient. The preset correction difference remains unchanged each time the distortion exceeds the preset threshold. Therefore, based on the number of times the distortion exceeds the preset threshold, the correction coefficient, and the preset correction difference, the corresponding correction coefficient for each time the distortion exceeds the preset threshold can be calculated.

[0070] For example, when the distortion exceeds the preset threshold for the first time, the correction coefficient is 0, and the preset correction difference is 0.1. Then the new correction coefficient is equal to 0 + 0.1 = 0.1. When the distortion exceeds the preset threshold for the second time, the correction coefficient is 0.1, and the preset correction difference is 0.1. Then the new correction coefficient is equal to 0.1 + 0.1 = 0.2.

[0071] It should be understood that the correction coefficient can be obtained by adding, multiplying or combining with a preset correction difference, or by using a combination of various calculation methods. This application does not impose any restrictions on this.

[0072] S270. When the distortion is less than or equal to the preset threshold, the brightness enhancement coefficient is determined as the target brightness enhancement coefficient.

[0073] Specifically, when the distortion is less than or equal to a preset threshold, such as when the distortion is less than 2%, the brightness enhancement coefficient at this time is determined as the target brightness enhancement coefficient, and the target brightness of each pixel at this time is the display brightness of each pixel after compensation.

[0074] In the technical solution of this application, this application is based on a total number N all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone; the number N of pixels in the backlight zone whose target brightness equals the maximum brightness is determined. over Based on the total number N all The number of N over Determine the distortion level of the backlight zones; compare the distortion level with a preset threshold; when the distortion level is greater than the preset threshold, adjust the brightness enhancement coefficient according to preset rules, and return to the execution state based on the total number N. allThe initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone. When the distortion is less than or equal to a preset threshold, the brightness enhancement coefficient is determined as the target brightness enhancement coefficient. Through the above method, this application continuously adjusts the brightness enhancement coefficient to obtain the target brightness enhancement coefficient when the distortion is less than or equal to the preset threshold, thereby determining the corresponding target brightness of each pixel. This allows more pixels to be displayed at maximum brightness without causing excessive image distortion, while ensuring image contrast and detail, thus improving the display effect of the product.

[0075] like Figure 3 The image shown is a schematic diagram illustrating the effect of displaying an image without pixel compensation. Figure 4 The image shown is a schematic diagram illustrating the effect of displaying an image when pixel compensation is performed but the brightness enhancement factor is not corrected. Figure 5 The image shown is a schematic diagram illustrating the effect of displaying an image when the display device performs pixel compensation and corrects the brightness enhancement coefficient. Figure 3 , Figure 4 and Figure 5 The white areas represent the bright areas in the image, while the black and gray areas represent the darker areas. As you can see... Figure 5 The area of ​​the medium-high brightness region relative to Figure 4 The highlighted area in the image is smaller and closer to the area of ​​the highlight region. Figure 3 The original image is displayed effectively. Therefore, this application continuously adjusts the brightness enhancement coefficient, thereby continuously adjusting the target brightness of each pixel, which simultaneously ensures the contrast and detail of the image, thus improving the display effect of the product.

[0076] In another embodiment provided in this application, the method further includes: determining the grayscale signal corresponding to each pixel based on the correspondence between the target brightness and the grayscale signal; and inputting the corresponding grayscale signal to each pixel so that each pixel displays the corresponding target brightness.

[0077] Specifically, after determining the target brightness of each pixel, for example, if the target brightness of a certain pixel is high, the pulse duration of the grayscale signal corresponding to that pixel is longer; while if the target brightness of another pixel is low, the pulse duration of the grayscale signal corresponding to that pixel is shorter; by adjusting the pulse duration of the grayscale signal, the display brightness of each pixel can be controlled to be equal to the target brightness.

[0078] like Figure 6 As shown, this application provides a pixel brightness compensation device, including:

[0079] Information determination module 610 is used to determine the total number N of pixels corresponding to the backlight partition. all The initial brightness of each pixel in the backlight zone and the brightness enhancement coefficient corresponding to the backlight zone;

[0080] Target brightness determination module 620, used for determining the brightness based on the total number N all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone.

[0081] Pixel determination module 630 is used to determine the number N of pixels in the backlight zone whose target brightness is equal to the maximum brightness. over ;

[0082] Distortion determination module 640, used to determine the distortion based on the total number N all The number of N over Determine the distortion of the backlight zones;

[0083] The distortion comparison module 650 is used to compare the distortion with a preset threshold.

[0084] The first execution module 660 is used to adjust the brightness enhancement coefficient according to preset rules when the distortion is greater than a preset threshold, and to return the execution based on the total number N. all The initial brightness and brightness enhancement coefficient of each pixel are used to determine the target brightness of each pixel in the backlight zone.

[0085] The second execution module 670 is used to determine the brightness enhancement coefficient as the target brightness enhancement coefficient when the distortion is less than or equal to a preset threshold.

[0086] In another embodiment provided in this application, the target brightness determination module 620 includes: a brightness statistics unit, used to calculate the total initial brightness of all pixels in the backlight partition based on the initial brightness of each pixel; and an average brightness calculation unit, used to calculate the average brightness based on the total number N. all The total initial brightness is used to determine the average brightness of the backlight zones; the target brightness calculation unit is used to calculate the brightness according to the formula: P ′ (x,y)=A×P local +P(x,y), calculate the target brightness; where P ′ (x,y) represents the target brightness, A is the brightness enhancement coefficient, and P... local P(x,y) represents the average brightness, and P(x,y) represents the initial brightness.

[0087] In another embodiment provided in this application, the information determination module 610 includes: a correction coefficient acquisition unit, used to acquire the correction coefficient corresponding to the backlight partition; a brightness determination unit, used to determine the maximum display brightness of the pixel corresponding to the backlight partition; and a coefficient determination unit, used to determine the brightness enhancement coefficient based on the average brightness, the correction coefficient, and the maximum display brightness.

[0088] In another embodiment provided in this application, the coefficient determination unit is further configured to determine the coefficient according to the formula: The luminance enhancement coefficient is calculated; where A is the luminance enhancement coefficient, and P is the luminance enhancement coefficient. max For maximum display brightness, P local denoted as average brightness, and k as a correction factor.

[0089] In another embodiment provided in this application, the first execution module 660 includes: a count recording unit for recording the number of times the distortion is greater than a preset threshold; a difference acquisition unit for acquiring a preset correction difference for the backlight partition; a correction coefficient calculation unit for calculating the correction coefficient corresponding to each time the distortion is greater than the preset threshold based on the correction coefficient, the count, and the preset correction difference; and a return execution unit for returning the execution based on the average brightness, the correction coefficient, and the maximum display brightness to determine the brightness enhancement coefficient.

[0090] In another embodiment provided in this application, the distortion determination module 640 includes: a distortion calculation unit, used to calculate the distortion according to the formula: The distortion CP is calculated.

[0091] In another embodiment provided in this application, the device further includes: a grayscale signal adjustment module, used to determine the grayscale signal corresponding to each pixel based on the correspondence between the target brightness and the grayscale signal; and to input the corresponding grayscale signal to each pixel so that each pixel displays the corresponding target brightness.

[0092] like Figure 7 As shown, this application provides a display device 700, which includes: a display screen 710; and at least one processor 720 and a memory 730. The at least one processor 720 is used to process a computer program stored in the memory 730 to implement any of the pixel brightness compensation methods provided in this application.

[0093] Specifically, the processor 720 executes the computer program stored in the memory 730 to control the brightness of the image displayed on the display screen 710. The specific details of the display device provided in this application have been described in detail in the corresponding method embodiments, and will not be repeated here.

[0094] Figure 8 A schematic block diagram of a computer system for implementing the display device of the present application is shown.

[0095] It should be noted that, Figure 8 The computer system 800 of the display device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0096] like Figure 8As shown, the computer system 800 includes a processor 801, which can be a CPU (Central Processing Unit) or an MCU (Microcontroller Unit). The processor 801 can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 802 or programs loaded from storage section 808 into random access memory (RAM). The random access memory 803 also stores various programs and data required for system operation. The central processing unit 801, ROM 802, and RAM 803 are interconnected via a bus 804. An input / output interface 805 (I / O interface) is also connected to the bus 804.

[0097] The following components are connected to the input / output interface 805: an input section 806 including a keyboard, mouse, etc.; an output section 807 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 808 including a hard disk, etc.; and a communication section 809 including a network interface card such as a local area network card, modem, etc. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the input / output interface 805 as needed. A removable medium 811, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on the drive 810 as needed so that computer programs read from it can be installed into the storage section 808 as needed.

[0098] Specifically, according to embodiments of this application, the processes described in the various method flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 809, and / or installed from removable medium 811. When the computer program is executed by central processing unit 801, it performs various functions defined in the system of this application.

[0099] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such transmitted data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0100] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0101] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of this application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0102] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, touch terminal, or network device, etc.) to execute the embodiments according to this application.

[0103] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0104] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A pixel brightness compensation method, characterized in that, The method includes: Determine the total number of pixels corresponding to the backlight partition. The initial brightness of each pixel in the backlight zone and the brightness enhancement coefficient corresponding to the backlight zone; the display screen includes multiple backlight zones; Determining the brightness enhancement coefficient corresponding to the backlight zone includes: obtaining the correction coefficient corresponding to the backlight zone; determining the maximum display brightness of the pixel corresponding to the backlight zone; and determining the brightness enhancement coefficient based on the average brightness of the backlight area, the correction coefficient, and the maximum display brightness. Based on the total number The initial brightness of each pixel and the brightness enhancement coefficient are used to determine the target brightness of each pixel in the backlight partition; Determine the number of pixels in the backlight zone whose target brightness is equal to the maximum brightness. ; Based on the total number and the number Determine the distortion of the backlight partition; The distortion is compared with a preset threshold. When the distortion exceeds a preset threshold, the brightness enhancement coefficient is adjusted according to a preset rule, and the process returns to execute based on the total number of values. The initial brightness of each pixel and the brightness enhancement coefficient are used to determine the target brightness of each pixel in the backlight partition. When the distortion is less than or equal to a preset threshold, the brightness enhancement coefficient is determined as the target brightness enhancement coefficient.

2. The pixel brightness compensation method according to claim 1, characterized in that, Based on the total number The initial brightness of each pixel and the brightness enhancement coefficient are used to determine the target brightness of each pixel in the backlight partition, including: Based on the initial brightness of each pixel, the total initial brightness of all pixels in the backlight zone is calculated. Based on the total number The average brightness of the backlight zones is determined based on the total initial brightness. According to the formula: The target brightness is calculated; wherein, The target brightness, The brightness enhancement coefficient is... The average brightness, The initial brightness is [value].

3. The pixel brightness compensation method according to claim 1, characterized in that, The determination of the brightness enhancement coefficient based on the average brightness of the backlight area, the correction coefficient, and the maximum display brightness includes: According to the formula: The brightness enhancement coefficient is calculated; wherein, The brightness enhancement coefficient is... The maximum display brightness is [value]. The average brightness, The correction coefficient is denoted as .

4. The pixel brightness compensation method according to claim 1, characterized in that, The step of adjusting the brightness enhancement coefficient according to a preset rule includes: Record the number of times the distortion exceeds a preset threshold; Obtain the preset correction difference value of the backlight partition; Based on the correction coefficient, the number of times, and the preset correction difference, the correction coefficient corresponding to each time the distortion is greater than the preset threshold is calculated; Return to the process and determine the brightness enhancement coefficient based on the average brightness, the correction factor, and the maximum display brightness.

5. The pixel brightness compensation method according to claim 1, characterized in that, Based on the total number and the number Determining the distortion of the backlight zones includes: According to the formula: The distortion was calculated. .

6. The pixel brightness compensation method according to claim 1, characterized in that, The method further includes: Based on the correspondence between the target brightness and the grayscale signal, the grayscale signal corresponding to each pixel is determined; Input the corresponding grayscale signal to each pixel so that each pixel displays the corresponding target brightness.

7. A pixel brightness compensation device, characterized in that, include: The information determination module is used to determine the total number of pixels corresponding to the backlight partition. The initial brightness of each pixel in the backlight partition and the brightness enhancement coefficient corresponding to the backlight partition; The display screen includes multiple backlight zones; Determining the brightness enhancement coefficient corresponding to the backlight zone includes: obtaining the correction coefficient corresponding to the backlight zone; determining the maximum display brightness of the pixel corresponding to the backlight zone; and determining the brightness enhancement coefficient based on the average brightness of the backlight area, the correction coefficient, and the maximum display brightness. The target brightness determination module is used to determine the brightness based on the total number of targets. The initial brightness of each pixel and the brightness enhancement coefficient are used to determine the target brightness of each pixel in the backlight partition; The pixel determination module is used to determine the number of pixels in the backlight zone whose target brightness is equal to the maximum brightness. ; The distortion determination module is used to determine the distortion based on the total number of and the number Determine the distortion of the backlight partition; The distortion comparison module is used to compare the distortion with a preset threshold. The first execution module is used to adjust the brightness enhancement coefficient according to a preset rule when the distortion degree is greater than a preset threshold, and to return to the execution based on the total number. The initial brightness of each pixel and the brightness enhancement coefficient are used to determine the target brightness of each pixel in the backlight partition; The second execution module is used to determine the brightness enhancement coefficient as the target brightness enhancement coefficient when the distortion degree is less than or equal to a preset threshold.

8. A computer medium storing a computer program thereon, characterized in that, When executed by a processor, the computer program implements the pixel brightness compensation method according to any one of claims 1 to 6.

9. A display device, characterized in that, include: Display screen; as well as At least one processor and a memory, the at least one processor being configured to process a computer program stored in the memory to implement the pixel brightness compensation method as described in any one of claims 1 to 6 above.

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