Screen Display Method, Screen Display Device, Electronic Device, Program and Medium

Abstract

The screen display method, screen display device, electronic device, program, and medium provided by the present disclosure belong to the field of display technology. The method includes obtaining the initial pixel brightness corresponding to each pixel in the image to be displayed; taking the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to a single pixel as the target pixel brightness corresponding to the single pixel, so as to obtain the target pixel brightness corresponding to each pixel; and displaying each pixel in the image to be displayed on the screen according to the corresponding target pixel brightness.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of display, and particularly relates to a screen display method, a screen display device, an electronic device, a program and a medium. Background Art

[0002] In the related art, a direct-lit Mini LED screen can be referred to Figure 1 as shown, which includes a backlight layer composed of multiple lamp boards and an LCD image display layer disposed on the backlight layer. The backlight layer provides light sources for the image display layer, and the image display layer controls the light transmittance of the image display layer by adjusting the supply voltage of the liquid crystal to display different images on the image display layer. However, due to the influence of cumulative errors or positioning accuracy during the splicing process of the lamp boards, the actual LED spacing at the seams of different lamp boards deviates from the design value. In particular, the Mini LED lamp board with high-density lamp beads is more sensitive to this deviation, resulting in the backlight brightness at the seams of the lamp boards being lower than that at non-seam positions, and causing dark stripes to appear in the displayed image at the seams of the screen lamp boards.

[0003] Obviously, this deviation will seriously interfere with the uniformity of the light emitted by the backlight layer of the Mini LED screen. Summary of the Invention

[0004] The present disclosure provides a screen display method, a screen display device, an electronic device, a program and a medium.

[0005] Some embodiments of the present disclosure provide a screen display method, the method including:

[0006] Obtaining an initial pixel brightness corresponding to each pixel point in the to-be-displayed image;

[0007] Taking the lowest actual brightness when the screen displays a solid-color image according to the initial pixel brightness corresponding to a single pixel point as the target pixel brightness corresponding to the single pixel point, so as to obtain the target pixel brightness corresponding to each pixel point;

[0008] Displaying each pixel point in the to-be-displayed image on the screen according to the corresponding target pixel brightness.

[0009] Optionally, the taking the lowest actual brightness when the screen displays a solid-color image according to the initial pixel brightness corresponding to a single pixel point as the target pixel brightness corresponding to the single pixel point includes:

[0010] Query a brightness adjustment value that matches the initial pixel brightness and pixel position of the pixel in a brightness correction lookup table, where the brightness adjustment value is used to characterize the numerical relationship between the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to the pixel, and the initial pixel brightness;

[0011] Use the brightness adjustment value to reduce the initial pixel brightness to a target pixel brightness.

[0012] Optionally, the initial pixel brightness includes: the initial sub-pixel brightness of each sub-pixel included in the pixel, the target pixel brightness includes: the target sub-pixel brightness of each sub-pixel included in the pixel, and the brightness adjustment value includes: the sub-pixel brightness adjustment value of each sub-pixel included in the pixel;

[0013] The querying in the brightness correction lookup table for a brightness adjustment value that matches the initial pixel brightness and pixel position of the pixel includes:

[0014] Query in the brightness correction lookup table for a brightness adjustment value that matches the initial sub-pixel brightness of the sub-pixel and the pixel position of the pixel to which the sub-pixel belongs, as the sub-pixel brightness adjustment value of the sub-pixel;

[0015] The using the brightness adjustment value to reduce the initial pixel brightness to a target pixel brightness includes:

[0016] Use the sub-pixel brightness adjustment value to reduce the initial sub-pixel brightness to a target sub-pixel brightness.

[0017] Optionally, the querying in the brightness correction lookup table for a brightness adjustment value that matches the initial sub-pixel brightness of the sub-pixel and the pixel position of the pixel to which the sub-pixel belongs, as the sub-pixel brightness adjustment value of the sub-pixel, includes:

[0018] Query in the brightness correction lookup table for a plurality of adjacent positions adjacent to the position corresponding to the initial sub-pixel brightness and the pixel position;

[0019] Calculate the sub-pixel brightness adjustment value corresponding to the sub-pixel according to the adjacent brightness adjustment values corresponding to the adjacent positions.

[0020] Optionally, the brightness correction lookup table is obtained through the following steps:

[0021] Obtain the actual brightness distribution data of the screen when displaying solid color grayscale images of multiple different brightness levels respectively;

[0022] Determine the lowest actual brightness in the actual brightness distribution data of each brightness level;

[0023] Calculate the brightness adjustment value between the actual brightness of each pixel point in the actual brightness distribution data and the lowest actual brightness;

[0024] Establish a mapping relationship between the brightness adjustment value, the actual brightness, and the pixel position of the pixel point to obtain the brightness correction lookup table.

[0025] Optionally, the calculating the brightness adjustment value between the actual brightness of each pixel point in the actual brightness distribution data and the lowest actual brightness includes:

[0026] Take the ratio between the lowest actual brightness and the actual brightness of each pixel point in the actual brightness distribution data as the brightness adjustment value corresponding to each pixel point.

[0027] Optionally, the obtaining the actual brightness distribution data of the screen when displaying a plurality of solid color grayscale images with different brightness levels respectively includes:

[0028] Obtain the actual brightness distribution image of the screen when displaying each of the solid color grayscale images;

[0029] Perform dense sampling on the low-brightness area in the actual brightness distribution image and sparse sampling on the normal-brightness area in the actual brightness distribution image to obtain the actual brightness distribution data.

[0030] Optionally, the performing dense sampling on the low-brightness area in the actual brightness distribution image and sparse sampling on the normal-brightness area in the actual brightness distribution image to obtain the actual brightness distribution data includes:

[0031] When the screen is a Mini LED screen, perform dense sampling on the backlight panel seam in the actual brightness distribution graph and sparse sampling on the non-backlight panel seam in the actual brightness distribution image to obtain the actual brightness distribution data.

[0032] Optionally, the obtaining the initial pixel brightness of each pixel point in the image to be displayed includes:

[0033] Obtain the initial grayscale data of the image to be displayed;

[0034] Perform electro-optical conversion on the initial grayscale data to obtain the initial pixel brightness of each pixel point;

[0035] The displaying each pixel point in the image to be displayed on the screen according to the corresponding target pixel brightness includes:

[0036] Perform opto-electronic conversion on the target pixel brightness of each pixel point to obtain the target grayscale data of the image to be displayed;

[0037] Output the target gray data to the screen so that the screen displays the image to be displayed.

[0038] Some embodiments of the present disclosure provide a screen display device, including:

[0039] An input module configured to obtain the initial pixel brightness corresponding to each pixel point in the image to be displayed;

[0040] A processing module configured to use the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to a single pixel point as the target pixel brightness corresponding to the single pixel point, so as to obtain the target pixel brightness corresponding to each pixel point;

[0041] A display module configured to display each pixel point in the image to be displayed on the screen according to the corresponding target pixel brightness.

[0042] Optionally, the processing module is further configured to:

[0043] Query a brightness adjustment value that matches the initial pixel brightness and pixel position of the pixel point in a brightness correction look-up table, where the brightness adjustment value is used to characterize the numerical relationship between the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to the pixel point and the initial pixel brightness;

[0044] Use the brightness adjustment value to reduce the initial pixel brightness to the target pixel brightness.

[0045] Optionally, the initial pixel brightness includes: the initial sub-pixel brightness of each sub-pixel included in the pixel point, the target pixel brightness includes: the target sub-pixel brightness of each sub-pixel included in the pixel point, and the brightness adjustment value includes: the sub-pixel brightness adjustment value of each sub-pixel included in the pixel point;

[0046] The processing module is further configured to:

[0047] Query in a brightness correction look-up table for a brightness adjustment value that matches the initial sub-pixel brightness of the sub-pixel and the pixel position of the pixel point to which the sub-pixel belongs as the sub-pixel brightness adjustment value of the sub-pixel;

[0048] The using the brightness adjustment value to reduce the initial pixel brightness to the target pixel brightness includes:

[0049] Use the sub-pixel brightness adjustment value to reduce the initial sub-pixel brightness to the target sub-pixel brightness.

[0050] Optionally, the processing module is further configured to:

[0051] Query in the brightness correction lookup table for a plurality of adjacent points adjacent to the point corresponding to the initial sub-pixel brightness and the pixel position;

[0052] Calculate the sub-pixel brightness adjustment value corresponding to the sub-pixel point according to the adjacent brightness adjustment values corresponding to the adjacent points.

[0053] Optionally, the device further includes: a lookup table construction module configured to:

[0054] Obtain the actual brightness distribution data of the screen when displaying a plurality of pure color grayscale images with different brightness levels respectively;

[0055] Determine the lowest actual brightness in the actual brightness distribution data of each brightness level;

[0056] Calculate the brightness adjustment value between the actual brightness of each pixel point in the actual brightness distribution data and the lowest actual brightness;

[0057] Establish a mapping relationship between the brightness adjustment value, the actual brightness, and the pixel position of the pixel point to obtain the brightness correction lookup table.

[0058] Optionally, the lookup table construction module is further configured to:

[0059] Take the ratio between the lowest actual brightness and the actual brightness of each pixel point in the actual brightness distribution data as the brightness adjustment value corresponding to each pixel point.

[0060] Optionally, the lookup table construction module is further configured to:

[0061] Obtain the actual brightness distribution image of the screen when displaying each of the pure color grayscale images respectively;

[0062] Perform dense sampling on the low-brightness area in the actual brightness distribution image, and perform sparse sampling on the normal-brightness area in the actual brightness distribution image to obtain the actual brightness distribution data.

[0063] Optionally, the lookup table construction module is further configured to:

[0064] When the screen is a Mini LED screen, perform dense sampling on the backlight panel seam in the actual brightness distribution pattern, and perform sparse sampling on the non-backlight panel seam in the actual brightness distribution image to obtain the actual brightness distribution data.

[0065] Optionally, it is further configured to:

[0066] Obtain the initial grayscale data of the image to be displayed;

[0067] Perform electro-optical conversion on the initial grayscale data to obtain the initial pixel brightness of each pixel point;

[0068] The display module is further configured to:

[0069] Perform opto-electronic conversion on the target pixel brightness of each pixel point to obtain the target grayscale data of the image to be displayed;

[0070] Output the target grayscale data to the screen so that the screen displays the image to be displayed.

[0071] Some embodiments of the present disclosure provide a display device, including: a display screen, a screen controller;

[0072] The screen controller is configured to output the target pixel brightness of the image to be displayed to the display screen by executing the above screen display method;

[0073] The display screen is configured to display the image to be displayed based on the target pixel brightness.

[0074] Some embodiments of the present disclosure provide a computing processing device, including:

[0075] A memory in which computer-readable code is stored;

[0076] One or more processors, when the computer-readable code is executed by the one or more processors, the computing processing device executes the screen display method as described above.

[0077] Some embodiments of the present disclosure provide a computer program, including computer-readable code, when the computer-readable code runs on a computing processing device, causing the computing processing device to execute the screen display method as described above.

[0078] Some embodiments of the present disclosure provide a non-transitory computer-readable medium, in which the screen display method as described above is stored.

[0079] A screen display method, a screen display device, an electronic device, a program and a medium provided by the present disclosure, by adjusting the initial pixel brightness of each pixel point in the image to be displayed to the lowest actual brightness when the screen displays a pure grayscale image of the initial pixel brightness before the screen displays the image, so that the brightness level of the pixel points in the normal brightness area of the screen can be reduced to be consistent with the brightness level of the lower brightness area, even if the local brightness of the backlight layer of the screen is low, the brightness uniformity of the image displayed on the screen can be ensured.

[0080] The above description is only an overview of the technical solution of the present disclosure. In order to be able to understand the technical means of the present disclosure more clearly, it can be implemented in accordance with the content of the specification. And in order to make the above and other purposes, features, and advantages of the present disclosure more obvious and understandable, the following specifically illustrates the specific embodiments of the present disclosure. Description of the Drawings

[0081] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0082] Figure 1 Schematically shows a schematic structural diagram of a Mini LED screen provided by some embodiments of the present disclosure;

[0083] Figure 2 Schematically shows a schematic flowchart of a screen display method provided by some embodiments of the present disclosure;

[0084] Figure 3 Schematically shows one of the schematic flowcharts of another screen display method provided by some embodiments of the present disclosure;

[0085] Figure 4 Schematically shows two of the schematic flowcharts of another screen display method provided by some embodiments of the present disclosure;

[0086] Figure 5 Schematically shows three of the schematic flowcharts of another screen display method provided by some embodiments of the present disclosure;

[0087] Figure 6 Schematically shows four of the schematic flowcharts of another screen display method provided by some embodiments of the present disclosure;

[0088] Figure 7 Schematically shows a system architecture diagram of a screen display method provided by some embodiments of the present disclosure;

[0089] Figure 8 Schematically shows one of the schematic flowcharts of a method for constructing a lookup table provided by some embodiments of the present disclosure;

[0090] Figure 9 Schematically shows two of the schematic flowcharts of a method for constructing a lookup table provided by some embodiments of the present disclosure;

[0091] Figure 10Schematically shown is an effect diagram of an image sampling method provided by some embodiments of the present disclosure;

[0092] Figure 11 Schematically shown is a structural diagram of a screen display device provided by some embodiments of the present disclosure;

[0093] Figure 12 Schematically shown is a block diagram of a computing processing device for executing a method according to some embodiments of the present disclosure;

[0094] Figure 13 Schematically shown is a storage unit for holding or carrying program code for implementing a method according to some embodiments of the present disclosure. Detailed implementation manners

[0095] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0096] Figure 2 Schematically shown is a flowchart of a screen display method provided by the present disclosure, the method including:

[0097] Step 101, obtaining the initial pixel brightness corresponding to each pixel point in the image to be displayed.

[0098] It should be noted that the execution subject of the present disclosure is a screen controller, which is communicatively connected to the screen. Of course, the screen controller may be integrated in the screen or separately provided from the screen, and may be specifically set according to actual requirements, which is not limited herein. The image to be displayed is image data received by the screen controller and to be output to the screen for display, and includes the initial pixel brightness to be displayed for each pixel point of the screen.

[0099] In the embodiments of the present disclosure, the screen controller obtains the image data of the image to be displayed through the image input interface, and then converts the analog signal of the image into a digital signal through photoelectric conversion to obtain the initial pixel brightness of the image to be displayed. It can be understood that the initial pixel brightness refers to the initial pixel brightness when the image to be displayed directly instructs the screen to display without being processed by the screen display method provided by the present disclosure. Since the backlight layer of the screen may have uneven brightness, directly displaying the image according to the initial pixel brightness will cause the brightness of some areas in the displayed image to be darker. For example, in a Mini LED screen, due to the low brightness at the seam of the lamp board of the backlight layer, dark stripes will appear in the displayed image at the seam.

[0100] Step 102: Use the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to each single pixel as the target pixel brightness corresponding to each single pixel, so as to obtain the target pixel brightness corresponding to each pixel.

[0101] In the embodiments of the present disclosure, considering that the backlight board of the screen cannot be accurately adjusted according to the pixel granularity, in order to make the pixel brightness of the corrected screen consistent, the present disclosure adjusts the LCD pixel value to achieve the adjustment of the pixel brightness. The principle is as follows:

[0102] The screen display brightness formula is as follows in formula (1):

[0103] luma = L BL ×P LCD (1)

[0104] Where luma is the screen display brightness, L BL is the backlight brightness, and P LCD is the transmittance of the image display layer. Since the transmittance is proportional to the pixel brightness, that is, P LCD = k * l LCD , so in fact, the backlight brightness and the pixel brightness jointly determine the screen display brightness. Since the backlight brightness in the low-brightness area of the screen is low, resulting in the screen display brightness at that place being lower than other areas, reducing the pixel brightness of the normal-brightness display area makes the overall screen brightness consistent with the pixel brightness of the low-brightness area, thus achieving the purpose of equal overall screen brightness.

[0105] Further, when the pixel brightness in the normal brightness area takes the maximum value, that is, all three RGB color channels take the value of 255, the pixel brightness in the low brightness area cannot be increased any further. Therefore, only the pixel brightness in the normal brightness area can be decreased. At the same time, in order to ensure the consistency of gamma for all pixel gray levels, when selecting a pure color grayscale image with the same pixel brightness at all positions on the screen at the current pixel brightness, the minimum value of the actual pixel brightness on the screen is used as the target correction value for brightness. Additionally, since the purpose of this adjustment is to adjust the brightness of the entire screen, the lowest actual brightness selected is the minimum brightness among all row and column pixel points.

[0106] For the sake of easy understanding, refer to formula (2):

[0107]

[0108] Among them, L BL is the backlight brightness, P LCD (i) is the transmittance of the i-th pixel point in the image display layer, k is the proportionality coefficient, l LCD (i) is the brightness value of the current pixel, and α(i) is the brightness adjustment value of the current pixel point. It can be seen that by adjusting the brightness adjustment value, the pixel brightness of each pixel point in the image to be displayed can be adjusted to the same display effect as the lowest actual brightness when the screen backlight is displayed according to the initial pixel brightness.

[0109] In the embodiments of the present disclosure, the screen controller determines the actual lowest pixel brightness actually displayed on the screen when the screen displays a pure color grayscale image corresponding to the initial pixel brightness based on the initial pixel brightness of a single pixel point in the image to be displayed, as the target pixel brightness of this single pixel point. Furthermore, the screen controller can obtain the target pixel brightness corresponding to each pixel point in the image to be displayed in the above manner. It can be understood that since each pixel point in the image to be displayed is adjusted to the actual lowest brightness of the screen under its corresponding initial pixel brightness, the brightness levels of all pixel points on the screen can be kept consistent, that is, the actual pixel brightnesses displayed on the screen of each pixel point with the same initial pixel brightness are kept consistent, ensuring the uniformity of the screen display. It should be noted that a pure color grayscale image refers to an image in which the grayscale of each pixel point in the entire image is the same, and the grayscale can be converted into brightness through the gamma conversion coefficient, that is, the grayscale of this pure color grayscale image is the grayscale value obtained by converting the initial pixel brightness through the gamma conversion coefficient.

[0110] Exemplarily, the actual lowest brightness when the screen displays a pure color grayscale image according to the initial pixel brightness can be obtained by pre-experimentally measuring and recording the screen, and of course, it can also be measured in real time during actual use, which can be specifically set according to actual needs and is not limited here.

[0111] Step 103: Display each pixel of the image to be displayed on the screen according to the corresponding target pixel brightness.

[0112] In the embodiment of the present disclosure, the screen controller performs digital-to-analog conversion on the target pixel brightness of each pixel in the image to be displayed obtained through analysis and processing, and sends an output signal of the image to be displayed to the screen through a video output interface. Since the pixel brightness of each pixel in the output image to be displayed is the lowest actual brightness when the screen displays a pure gray-scale image with its initial pixel brightness, even if there is a situation where the local brightness of the screen display image is low due to the low backlight brightness of the backlight layer in the screen, the pixel brightness of the pixels in the normal brightness area can be reduced to the same pixel brightness as that in the low brightness area, thereby ensuring the uniformity of the pixel brightness in the screen.

[0113] In the embodiment of the present disclosure, before the screen displays an image, the initial pixel brightness of each pixel in the image to be displayed is adjusted to the lowest actual brightness when the screen displays a pure gray-scale image with this initial pixel brightness, so that the brightness level of the pixels in the normal brightness area of the screen can be reduced to be consistent with the brightness level of the lower brightness area. Even if the local brightness of the backlight layer of the screen is low, the brightness uniformity of the image displayed on the screen can be ensured.

[0114] Optionally, referring to Figure 3 , step 102 includes:

[0115] Step 1021: Query a brightness adjustment value that matches the initial pixel brightness and pixel position of the pixel in a brightness correction look-up table. The brightness adjustment value is used to represent the numerical relationship between the lowest actual brightness when the screen displays a pure color image according to the initial pixel brightness corresponding to the pixel, and the initial pixel brightness.

[0116] Step 1022: Use the brightness adjustment value to reduce the initial pixel brightness to the target pixel brightness.

[0117] In the embodiment of the present disclosure, the brightness correction look-up table includes the mapping relationship between the initial pixel brightness, pixel position and brightness adjustment value. This brightness correction look-up table can be obtained by pre-controlling the screen to display pure color images of different gray levels, collecting the actual pixel brightness of different pixel positions, calculating the brightness adjustment value according to the numerical relationship between the lowest actual brightness and the actual pixel brightness of the pixel, and then establishing the mapping relationship between the pixel position and the pixel brightness. Of course, the brightness adjustment value in the brightness correction look-up table can also be set by the user according to the evaluation of the screen brightness situation. It can be specifically set according to actual needs and is not limited here.

[0118] It can be understood that if the position of the pixel is in the low - brightness area, the initial pixel brightness of this pixel may be the lowest actual brightness. Therefore, the brightness adjustment value will be relatively small. If the pixel position is in the normal - brightness area, there is a certain difference between the initial pixel brightness and the lowest actual brightness of this pixel, and the corresponding brightness adjustment value will be significantly larger than that of the pixel in the low - brightness area. It can be seen that when the initial pixel brightness is the same but the pixel positions are different, the corresponding brightness adjustment values will also be different. Therefore, in the brightness correction lookup table, a mapping relationship between the initial pixel brightness, the pixel position, and the brightness adjustment value needs to be established.

[0119] The screen controller can calculate the target pixel brightness corresponding to this pixel by calculating according to the data relationship between the brightness adjustment value and the initial pixel brightness. This numerical relationship can be a numerical relationship in the form of functions such as addition, subtraction, multiplication, and division. Thus, the screen controller can adjust the brightness to bring the initial pixel brightness into the function to calculate the target pixel brightness.

[0120] In the embodiment of the present disclosure, a pre - set brightness correction lookup table is used to record the mapping relationship between the brightness adjustment value of the pixel, the initial pixel brightness, and the pixel position, so that it can be directly queried and used by the screen controller during actual use, improving the efficiency of brightness correction.

[0121] Optionally, the initial pixel brightness includes: the initial sub - pixel brightness of each sub - pixel included in the pixel. The target pixel brightness includes: the target sub - pixel brightness of each sub - pixel included in the pixel. The brightness adjustment value includes: the sub - pixel brightness adjustment value of each sub - pixel included in the pixel. Referring to Figure 4 In step 1021, it includes:

[0122] Step 10211: Query in the brightness correction lookup table for the brightness adjustment value that matches the initial sub - pixel brightness of the sub - pixel and the pixel position of the pixel to which the sub - pixel belongs, and use it as the sub - pixel brightness adjustment value of the sub - pixel.

[0123] It should be noted that a sub - pixel is a smaller pixel unit in a pixel. For example, for a pixel with RGB three - color channels, its sub - pixels can be three sub - pixels of the R, G, and B channels respectively. Correspondingly, since each sub - pixel displays brightness independently, the sub - pixel brightness of each sub - pixel included in a certain pixel also needs to be adjusted separately for brightness. After the adjustment, the target sub - pixel brightness corresponding to each sub - pixel will be obtained. When adjusting it, the brightness adjustment values to be queried will include the sub - pixel brightness adjustment values corresponding to different sub - pixels.

[0124] Step 1022 includes:

[0125] Step 10221, reducing the initial sub-pixel brightness to the target sub-pixel brightness by using the sub-pixel brightness adjustment value.

[0126] In the embodiments of the present disclosure, considering that the luminance correction lookup table records the mapping relationship between different pixel luminances, pixel positions, and luminance adjustment values, for sub-pixels, the pixel position of the pixel to which it belongs can be directly used as the position of the sub-pixel. The initial sub-pixel brightness can be directly extracted from the initial pixel brightness of the pixel according to the channel type of the image to be displayed. For example, for the initial pixel brightness of the three channels of RGB, the data format of its initial pixel brightness should be L=(L R , L G , L B ). Then L R is the initial sub-pixel brightness of the sub-pixel in the R channel, and the same applies to others.

[0127] The screen controller queries the luminance correction lookup table based on the initial sub-pixel brightness of each sub-pixel and the pixel position of the pixel where the sub-pixel is located to obtain the sub-pixel luminance adjustment value corresponding to each sub-pixel, and uses the sub-pixel luminance adjustment value to reduce the initial sub-pixel brightness to the target sub-pixel brightness. Then, the target sub-pixel brightness of each sub-pixel included in each pixel can form the target pixel brightness of the pixel for subsequent screen display.

[0128] The embodiments of the present disclosure improve the accuracy of screen brightness correction by adjusting the brightness of each sub-pixel in the pixel separately.

[0129] Optionally, referring to Figure 5 , the step 10211 includes:

[0130] Step 102111, querying in the luminance correction lookup table for a plurality of adjacent points adjacent to the point corresponding to the initial sub-pixel brightness and the pixel position.

[0131] Step 102112, calculating the sub-pixel luminance adjustment value corresponding to the sub-pixel according to the adjacent luminance adjustment values corresponding to the adjacent points.

[0132] In the embodiments of the present disclosure, considering that the luminance correction lookup table is obtained through experiments, it is difficult to ensure the continuity of the recorded data. That is to say, the data in the luminance correction lookup table is a non-linear mapping relationship. This results in a high probability that it is impossible to directly find a point in the luminance correction that is exactly the same as the initial sub-pixel brightness and pixel position.

[0133] Specifically, a trilinear interpolation algorithm can be used to query the sub-pixel brightness adjustment value corresponding to each sub-pixel point in the brightness correction lookup table. The trilinear interpolation algorithm can be referred to in related technologies and will not be elaborated here.

[0134] Optionally, referring to Figure 6 , step 101 includes:

[0135] Step 1011: Obtain the initial grayscale data of the image to be displayed.

[0136] Step 1012: Perform electro-optical conversion on the initial grayscale data to obtain the initial pixel brightness of each pixel point.

[0137] Step 103 includes:

[0138] Step 1031: Perform opto-electronic conversion on the target pixel brightness of each pixel point to obtain the target grayscale data of the image to be displayed.

[0139] Step 1032: Output the target grayscale data to the screen so that the screen displays the image to be displayed.

[0140] In the embodiment of the present disclosure, referring to the system architecture diagram shown in Figure 7 :

[0141] S1: Receive the initial grayscale data of the image to be displayed from the video input interface;

[0142] S2: Perform synchronous row scan counting (Rcnt) and column scan counting (Ccnt) on the initial grayscale data Gray(r, g, b) of each input pixel point to obtain the positioning coordinates (x, y) of the pixel point, where x = Ccnt and y = Rcnt;

[0143] S3: Perform electro-optical conversion (EOTF, Electro-Optical Transfer Function) on the RGB three-channel data of the initial grayscale data Gray(r, g, b) of each pixel point respectively, that is, using the current system-applied gamma = γ as the conversion coefficient, and calculating that the sub-pixel brightnesses of the three channels of this pixel are respectively L R = γ(r), L G = γ(g), L B = γ(b), that is, the different sub-pixel brightnesses at the initial pixel brightness are z R = L R , z G = L G , z B = L BWhen it comes to Mini LED screens, the sub-pixel brightness can be selected as the maximum value. Since the backlight panel of Mini LED screens usually selects the sub-pixel with the highest brightness among the sub-pixels of the pixel point for display to ensure the backlight brightness during display, so as to ensure that the selected sub-pixel brightness is consistent with the backlight panel.

[0144] S4. Based on the positioning coordinates (x, y) of the pixel point positions generated by S1 and the sub-pixel brightness z generated by S2, obtain the three-dimensional coordinate information of the three sub-pixels: (x, y, z R ), (x, y, z G ), (x, y, z B ). Use the pre-established brightness correction look-up table LUT(X, Y, Z) to perform LUT look-up and trilinear interpolation on the three sub-pixel channels of the pixel point P respectively to obtain the adjusted value α of the mapped sub-pixel brightness R , α G , α B .

[0145] S5. For the sub-pixel brightness L of the three sub-pixels of the pixel point P R , L G , L B respectively use the corresponding adjustment weights α R , α G , α B to perform correction to obtain the new pixel brightness Luma’(Lr’, Lg’, Lb’): {Lr’ = L R *α R , L g’ = L G *α G , Lb’ = L B *α B}, which is the target pixel brightness containing the three target sub-pixel brightnesses after correction.

[0146] S6. Perform OETF (Optical-Electro Transfer Function) optoelectronic conversion on the target pixel brightness Luma’(Lr’, Lg’, Lb’) to obtain the corrected target gray data. P’(r’, g’, b’): {r’ = γ -1(Lr’) G’ = γ -1(LG’), Bl’ = γ -1(LB’)}.

[0147] Optionally, referring to Figure 8 , the brightness correction look-up table is obtained through the following steps:

[0148] Step 201, obtain the actual brightness distribution data of the screen when displaying multiple pure-color gray images with different brightness levels respectively.

[0149] In an embodiment of the present disclosure, the screen controller can input Z pure-color grayscale images Gray{G0, G1, …, G Z} with equal-difference brightness levels to the screen, and then use an industrial camera to capture the actual brightness distribution map Luma{L0, L1., …, L Z} when the screen actually displays the pure-color grayscale images, where Z represents the number of gray-scale sampling, and it is ensured that the brightness difference between any adjacent grayscale images is equal. The conversion from grayscale to brightness can be completed using the system default gamma conversion system.

[0150] Optionally, referring to Figure 9 , step 201 includes:

[0151] Step 2011, obtaining the actual brightness distribution image of the screen when each of the pure-color grayscale images is displayed.

[0152] Step 2012, densely sampling the low-brightness regions in the actual brightness distribution image and sparsely sampling the normal-brightness regions in the actual brightness distribution image to obtain actual brightness distribution data.

[0153] In an embodiment of the present disclosure, after obtaining the actual brightness distribution map of the screen, it is necessary to sample the brightness distribution map to obtain brightness distribution data. Considering that the subsequent focus is mainly on the pixel brightness of the low-brightness regions, during sampling, the low-brightness regions are densely sampled at a higher sampling density, while the non-low-brightness regions are sparsely sampled at a lower sampling density. The magnitude relationship between the two sampling densities is relative. The low-brightness regions and the normal-brightness regions can be determined based on actual observations or the attribute parameters of the screen. For example, the brightness levels of each display region can be obtained by observing the brightness of the screen in advance, or can be based on the attribute parameters of the backlight layer of the screen. For example, due to the structural characteristics of some types of screen backlight layers, the backlight brightness of specific regions is relatively low. The specific setting method can be set according to actual needs and is not limited here.

[0154] Optionally, step 2012 includes: when the screen is a Mini LED screen, densely sampling the seam positions of the backlight panel in the actual brightness distribution graph and sparsely sampling the non-seam positions of the backlight panel in the actual brightness distribution image to obtain actual brightness distribution data.

[0155] In an embodiment of the present disclosure, referring to Figure 10 , when the screen is a Mini LED screen, since the backlight layer is a spliced light board, there will inevitably be a problem of relatively low backlight brightness at the seam positions of the light board due to factors such as process. Therefore, the seam positions of the backlight layer can be directly used as low-brightness regions for dense sampling, while the non-seam positions can be used as normal-brightness regions for sparse sampling.

[0156] Specifically, X sampling points are sampled at non-uniform intervals in the horizontal direction, and Y sampling points are sampled at non-uniform intervals in the vertical direction; during non-uniform sampling, dense sampling is performed at the dark fringes and sparse sampling is performed at non-dark fringes; after sampling is completed, a two-dimensional distribution discrete point map l(x, y, z) = Lumaz(X, Y) at Z brightness levels is obtained. Each point data l(x, y, z) represents the pixel brightness value at the xy position of the screen coordinates at the brightness LumaZ.

[0157] Step 202: Determine the lowest actual brightness in the actual brightness distribution data of each brightness level.

[0158] In the embodiment of the present disclosure, in order to ensure that the corrected pixel brightness has a uniform display brightness, the lowest actual brightness in the actual brightness distribution data at different brightness levels needs to be selected as the target correction value.

[0159] Step 203: Calculate the brightness adjustment value between the actual brightness of each pixel point in the actual brightness distribution data and the lowest actual brightness.

[0160] Step 204: Establish a mapping relationship between the brightness adjustment value, the actual brightness, and the pixel position of the pixel point to obtain the brightness correction look-up table.

[0161] In the embodiment of the present disclosure, a three-dimensional look-up table between the brightness adjustment value, the actual brightness z, and the pixel position (x, y) is established to obtain the brightness correction look-up table used in the above screen display method of the present disclosure.

[0162] The embodiment of the present disclosure constructs a brightness correction look-up table by pre-detecting the brightness of the screen for the screen controller to query when displaying an image, improving the efficiency of screen brightness correction.

[0163] Optionally, step 203 includes: using the ratio between the lowest actual brightness and the actual brightness of each pixel point in the actual brightness distribution data as the brightness adjustment value corresponding to each pixel point.

[0164] In the embodiment of the present disclosure, the brightness adjustment value can be calculated by the following formula (3):

[0165]

[0166] where α is the brightness adjustment value of the pixel point at the x, y coordinate position at the z brightness level; lmin = Min(l(x, y, z)), representing the actual lowest brightness at the z brightness level.

[0167] The present disclosure can conveniently correct the pixel brightness by characterizing the brightness adjustment value according to the numerical relationship between the lowest actual brightness and the pixel brightness.

[0168] Figure 11 Schematically shows a structural diagram of a screen display device 30 provided by the present disclosure, including:

[0169] An input module 301, configured to obtain the initial pixel brightness corresponding to each pixel point in the image to be displayed;

[0170] A processing module 302, configured to use the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to a single pixel point as the target pixel brightness corresponding to the single pixel point, so as to obtain the target pixel brightness corresponding to each pixel point;

[0171] A display module 303, configured to display each pixel point in the image to be displayed on the screen according to the corresponding target pixel brightness.

[0172] Optionally, the processing module 302 is further configured to:

[0173] Query a brightness adjustment value that matches the initial pixel brightness and pixel position of the pixel point in a brightness correction lookup table, where the brightness adjustment value is used to characterize the numerical relationship between the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to the pixel point and the initial pixel brightness;

[0174] Use the brightness adjustment value to reduce the initial pixel brightness to the target pixel brightness.

[0175] Optionally, the initial pixel brightness includes: the initial sub-pixel brightness of each sub-pixel included in the pixel point, the target pixel brightness includes: the target sub-pixel brightness of each sub-pixel included in the pixel point, and the brightness adjustment value includes: the sub-pixel brightness adjustment value of each sub-pixel included in the pixel point;

[0176] The processing module 302 is further configured to:

[0177] Query in a brightness correction lookup table for a brightness adjustment value that matches the initial sub-pixel brightness of the sub-pixel and the pixel position of the pixel point to which the sub-pixel belongs as the sub-pixel brightness adjustment value of the sub-pixel;

[0178] The using the brightness adjustment value to reduce the initial pixel brightness to the target pixel brightness includes:

[0179] Using the sub-pixel brightness adjustment value to reduce the initial sub-pixel brightness to the target sub-pixel brightness.

[0180] Optionally, the processing module 302 is further configured to:

[0181] Query in the brightness correction lookup table for a plurality of adjacent points adjacent to the point corresponding to the initial sub-pixel brightness and the pixel point position;

[0182] Calculate the sub-pixel brightness adjustment value corresponding to the sub-pixel point according to the adjacent brightness adjustment values corresponding to the adjacent points.

[0183] Optionally, the device further includes: a lookup table construction module, configured to:

[0184] Obtain the actual brightness distribution data of the screen when displaying a plurality of pure color grayscale images with different brightness levels respectively;

[0185] Determine the lowest actual brightness in the actual brightness distribution data of each brightness level;

[0186] Calculate the brightness adjustment value between the actual brightness of each pixel point in the actual brightness distribution data and the lowest actual brightness;

[0187] Establish a mapping relationship between the brightness adjustment value, the actual brightness, and the pixel point position of the pixel point to obtain the brightness correction lookup table.

[0188] Optionally, the lookup table construction module is further configured to:

[0189] Use the ratio between the lowest actual brightness and the actual brightness of each pixel point in the actual brightness distribution data as the brightness adjustment value corresponding to each pixel point.

[0190] Optionally, the lookup table construction module is further configured to:

[0191] Obtain the actual brightness distribution images of the screen when displaying each of the pure color grayscale images respectively;

[0192] Perform dense sampling on the low brightness region in the actual brightness distribution image, and perform sparse sampling on the normal brightness region in the actual brightness distribution image to obtain the actual brightness distribution data.

[0193] Optionally, the lookup table construction module is further configured to:

[0194] When the screen is a Mini LED screen, perform dense sampling on the backlight panel seam in the actual brightness distribution graph, and perform sparse sampling on the non-backlight panel seam in the actual brightness distribution image to obtain the actual brightness distribution data.

[0195] Optionally, it is further configured to:

[0196] Obtain the initial grayscale data of the image to be displayed;

[0197] Perform electro-optical conversion on the initial grayscale data to obtain the initial pixel brightness of each pixel;

[0198] The display module 303 is further configured to:

[0199] Perform opto-electronic conversion on the target pixel brightness of each pixel to obtain the target grayscale data of the image to be displayed;

[0200] Output the target grayscale data to the screen so that the screen displays the image to be displayed.

[0201] In the embodiment of the present disclosure, before the screen displays an image, the initial pixel brightness of each pixel in the image to be displayed is adjusted to the lowest actual brightness when the screen displays a pure grayscale image of the initial pixel brightness, so that the brightness level of the pixels in the normal brightness area of the screen can be reduced to be consistent with the brightness level of the lower brightness area. Even if the local brightness of the backlight layer of the screen is low, the brightness uniformity of the image displayed on the screen can be ensured.

[0202] Some embodiments of the present disclosure provide a display device, including: a display screen, a screen controller;

[0203] The screen controller is configured to output the target pixel brightness of the image to be displayed to the display screen by executing the above screen display method;

[0204] The display screen is configured to display the image to be displayed based on the target pixel brightness.

[0205] In the embodiment of the present disclosure, before the screen displays an image, the initial pixel brightness of each pixel in the image to be displayed is adjusted to the lowest actual brightness when the screen displays a pure grayscale image of the initial pixel brightness, so that the brightness level of the pixels in the normal brightness area of the screen can be reduced to be consistent with the brightness level of the lower brightness area. Even if the local brightness of the backlight layer of the screen is low, the brightness uniformity of the image displayed on the screen can be ensured.

[0206] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0207] Each component embodiment of the present disclosure can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) can be used in practice to implement some or all of the functions of some or all of the components in the computing processing device according to the embodiments of the present disclosure. The present disclosure can also be implemented as a device or apparatus program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present disclosure can be stored on a non-transitory computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, or provided on a carrier signal, or in any other form.

[0208] For example, Figure 12 A computing processing device that can implement the method according to the present disclosure is shown. Traditionally, the computing processing device includes a processor 410 and a computer program product or a non-transitory computer-readable medium in the form of a memory 420. The memory 420 can be an electronic memory such as flash memory, EEPROM (electrically erasable programmable read-only memory), EPROM, a hard disk, or ROM. The memory 420 has a storage space 430 for program code 431 for executing any of the method steps described above. For example, the storage space 430 for the program code can include respective program codes 431 for implementing the various steps in the above methods. These program codes can be read from or written into one or more computer program products. These computer program products include program code carriers such as hard disks, compact discs (CDs), memory cards, or floppy disks. Such computer program products are typically portable or fixed storage units as described in reference to Figure 13 The storage unit can have a storage segment, a storage space, etc. arranged similarly to the memory 420 in the Figure 12 computing processing device. The program code can be compressed in an appropriate form, for example. Generally, the storage unit includes computer-readable code 431', that is, code that can be read by a processor such as 410, and when run by the computing processing device, causes the computing processing device to execute the respective steps in the methods described above.

[0209] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order requirement for the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed alternately or in turn with at least some of the sub-steps or stages of other steps or other steps.

[0210] As used herein, the terms "one embodiment", "an embodiment", or "one or more embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. In addition, note that the examples of the phrase "in one embodiment" herein do not necessarily all refer to the same embodiment.

[0211] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that the embodiments of the present disclosure may be practiced without these specific details. In some instances, well-known methods, structures, and technologies have not been shown in detail so as not to obscure the understanding of this specification.

[0212] In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present disclosure may be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim listing several devices, several of these devices may be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words may be interpreted as names.

[0213] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not intended to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A screen display method, characterized in that, The method includes: Obtaining the initial pixel brightness corresponding to each pixel point in the image to be displayed; Taking the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to a single pixel point as the target pixel brightness corresponding to the single pixel point, so as to obtain the target pixel brightness corresponding to each pixel point; Displaying each pixel point in the image to be displayed on the screen according to the corresponding target pixel brightness; The step of taking the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to a single pixel point as the target pixel brightness corresponding to the single pixel point includes: Querying in a brightness correction lookup table for a brightness adjustment value that matches the initial pixel brightness and pixel point position of the pixel point, where the brightness adjustment value is used to characterize the numerical relationship between the lowest actual brightness when the screen displays a solid color image according to the initial pixel brightness corresponding to the pixel point and the initial pixel brightness; Using the brightness adjustment value to reduce the initial pixel brightness to the target pixel brightness; The brightness correction lookup table is obtained through the following steps: Obtaining the actual brightness distribution data of the screen when displaying solid color grayscale images with multiple different brightness levels respectively; Determining the lowest actual brightness in the actual brightness distribution data of each brightness level; Calculating the brightness adjustment value between the actual brightness of each pixel point in the actual brightness distribution data and the lowest actual brightness; Establishing a mapping relationship between the brightness adjustment value, the actual brightness, and the pixel point position of the pixel point to obtain the brightness correction lookup table; The step of obtaining the actual brightness distribution data of the screen when displaying solid color grayscale images with multiple different brightness levels respectively includes: Obtaining the actual brightness distribution image of the screen when displaying each solid color grayscale image respectively; Performing dense sampling on the low brightness area in the actual brightness distribution image and sparse sampling on the normal brightness area in the actual brightness distribution image to obtain the actual brightness distribution data.

2. The method according to claim 1, wherein The initial pixel brightness includes: the initial sub-pixel brightness of each sub-pixel point included in the pixel point, the target pixel brightness includes: the target sub-pixel brightness of each sub-pixel point included in the pixel point, and the brightness adjustment value includes: the sub-pixel brightness adjustment value of each sub-pixel point included in the pixel point; The step of querying in a brightness correction lookup table for a brightness adjustment value that matches the initial pixel brightness and pixel point position of the pixel point includes: Querying in a brightness correction lookup table for a brightness adjustment value that matches the initial sub-pixel brightness of the sub-pixel point and the pixel point position of the pixel point to which the sub-pixel point belongs as the sub-pixel brightness adjustment value of the sub-pixel point; The step of using the brightness adjustment value to reduce the initial pixel brightness to the target pixel brightness includes: Using the sub-pixel brightness adjustment value to reduce the initial sub-pixel brightness to the target sub-pixel brightness.

3. The method according to claim 2, wherein Querying in the brightness correction lookup table for a brightness adjustment value that matches the initial sub-pixel brightness of the sub-pixel point and the pixel position of the pixel point to which the sub-pixel point belongs, as the sub-pixel brightness adjustment value of the sub-pixel point, includes: Querying in the brightness correction lookup table for a plurality of adjacent points adjacent to the point corresponding to the initial sub-pixel brightness and the pixel position; Calculating the sub-pixel brightness adjustment value corresponding to the sub-pixel point according to the adjacent brightness adjustment values corresponding to the adjacent points.

4. The method according to claim 1, characterized in that The calculating the brightness adjustment value between the actual brightness of each pixel point in the actual brightness distribution data and the lowest actual brightness includes: Taking the ratio between the lowest actual brightness and the actual brightness of each pixel point in the actual brightness distribution data as the brightness adjustment value corresponding to each pixel point.

5. The method according to claim 1, wherein The densely sampling the low-brightness regions in the actual brightness distribution image and sparsely sampling the normal-brightness regions in the actual brightness distribution image to obtain actual brightness distribution data includes: When the screen is a Mini LED screen, densely sampling the backlight panel seam in the actual brightness distribution pattern and sparsely sampling the non-backlight panel seam in the actual brightness distribution image to obtain actual brightness distribution data.

6. The method according to claim 1, wherein The obtaining the initial pixel brightness of each pixel point in the image to be displayed includes: Obtaining the initial grayscale data of the image to be displayed; Performing electro-optical conversion on the initial grayscale data to obtain the initial pixel brightness of each pixel point; The displaying each pixel point in the image to be displayed on the screen according to the corresponding target pixel brightness includes: Performing opto-electric conversion on the target pixel brightness of each pixel point to obtain the target grayscale data of the image to be displayed; Outputting the target grayscale data to the screen so that the screen displays the image to be displayed.

7. A screen display device, characterized in that, The device includes: An input module configured to obtain the initial pixel brightness corresponding to each pixel point in the image to be displayed; A processing module configured to use the lowest actual brightness when the screen displays a solid-color image according to the initial pixel brightness corresponding to a single pixel point as the target pixel brightness corresponding to the single pixel point, so as to obtain the target pixel brightness corresponding to each pixel point; A display module configured to display each pixel point in the image to be displayed on the screen according to the corresponding target pixel brightness; The processing module is further configured to: Query in the brightness correction lookup table for a brightness adjustment value that matches the initial pixel brightness and the pixel position of the pixel point, where the brightness adjustment value is used to characterize the numerical relationship between the lowest actual brightness when the screen displays a solid-color image according to the initial pixel brightness corresponding to the pixel point and the initial pixel brightness; The using the brightness adjustment value to reduce the initial pixel brightness to the target pixel brightness includes: Using the sub-pixel brightness adjustment value to reduce the initial sub-pixel brightness to the target sub-pixel brightness; A lookup table construction module configured to: Obtain the actual brightness distribution data when the screen displays solid-color grayscale images with multiple different brightness levels respectively; Determine the lowest actual brightness in the actual brightness distribution data for each brightness level; Calculate the brightness adjustment value between the actual brightness of each pixel point in the actual brightness distribution data and the lowest actual brightness; Establish a mapping relationship between the brightness adjustment value, the actual brightness, and the pixel position of the pixel point to obtain a brightness correction lookup table; The query table construction module is further configured to: Obtain the actual brightness distribution image of the screen when each pure color grayscale image is displayed; Perform dense sampling on the low brightness area in the actual brightness distribution image and sparse sampling on the normal brightness area in the actual brightness distribution image to obtain actual brightness distribution data.

8. A display device, characterized in that, Comprising: A display screen, a screen controller; The screen controller is configured to output the target pixel brightness of the image to be displayed to the display screen by executing the screen display method according to any one of claims 1-6; The display screen is configured to display the image to be displayed based on the target pixel brightness.

9. A computing and processing device, characterized in that, Comprising: A memory, in which computer-readable code is stored; One or more processors, when the computer-readable code is executed by the one or more processors, the computing processing device executes the screen display method according to any one of claims 1-6.

10. A computer program product, characterized in that, Comprising computer-readable code, when the computer-readable code runs on a computing processing device, causing the computing processing device to execute the screen display method according to any one of claims 1-6.

11. A non-transitory computer-readable medium, characterized in that, A computer program product in which the screen display method according to any one of claims 1-6 is stored.

Images