An LED display screen display control method, device, equipment and storage medium

Abstract

Embodiments of the present application disclose an LED display screen display control method, device, equipment, and storage medium. The technical solution provided by the embodiments of the present application determines an area to be adjusted in the to-be-displayed picture whose gray value reaches a set gray threshold according to the picture gray information of the to-be-displayed picture, and while displaying the to-be-displayed picture on the LED display screen in the calibration-on state, increases the brightness of the area to be adjusted. Since the brightness of the area to be adjusted with high brightness in the to-be-displayed picture is increased, the highest brightness of the final display picture is increased, effectively improving the contrast of the display picture and the picture display quality.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technologies, and in particular, to a method, device, equipment, and storage medium for controlling the display of an LED display screen. Background Art

[0002] An LED display screen is a flat panel display composed of an LED dot matrix, which is a device used to display various information such as text, images, and videos. Due to the discreteness of each LED lamp in the LED dot matrix, the maximum brightness of each LED lamp varies greatly, resulting in poor picture consistency when the LED display screen is displaying.

[0003] In order to ensure the consistency of the picture of the LED display screen, it is necessary to perform point-by-point calibration on the LED display screen so that the brightness color gamut of the entire LED display screen tends to be consistent or close. However, for an LED display screen that has undergone point-by-point calibration, there will be a brightness loss of about 15% to 25% in the overall brightness, resulting in a reduction in the contrast of the displayed picture and affecting the picture display quality. Summary of the Invention

[0004] The embodiments of the present application provide a method, device, equipment, and storage medium for controlling the display of an LED display screen to improve the display quality of the LED display screen.

[0005] In a first aspect, the embodiments of the present application provide a method for controlling the display of an LED display screen, including:

[0006] Obtain a picture to be displayed, and determine the picture gray-scale information of the picture to be displayed;

[0007] According to the picture gray-scale information, determine an area to be adjusted in the picture to be displayed where the gray-scale value reaches a set gray-scale threshold;

[0008] Display the picture to be displayed on an LED display screen in a calibration-on state, and increase the brightness of the LED display screen in the area to be adjusted.

[0009] In a second aspect, the embodiments of the present application provide a device for controlling the display of an LED display screen, including a picture extraction module, a picture analysis module, and a picture processing module, where:

[0010] The picture extraction module is used to obtain a picture to be displayed and determine the picture gray-scale information of the picture to be displayed;

[0011] The picture analysis module is used to determine an area to be adjusted in the picture to be displayed where the gray-scale value reaches a set gray-scale threshold according to the picture gray-scale information;

[0012] The screen processing module is configured to display the to-be-displayed screen on the LED display screen in the calibration state, and increase the brightness of the LED display screen in the to-be-adjusted area.

[0013] In a third aspect, an embodiment of the present application provides an LED display control device, including: a memory and one or more processors;

[0014] The memory is used to store one or more programs;

[0015] When the one or more programs are executed by the one or more processors, the one or more processors implement the LED display control method as described in the first aspect.

[0016] In a fourth aspect, an embodiment of the present application provides a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute the LED display control method as described in the first aspect when executed by a computer processor.

[0017] In the embodiment of the present application, by determining the to-be-adjusted area in the to-be-displayed screen where the gray value reaches the set gray threshold according to the screen gray information of the to-be-displayed screen, and increasing the brightness of the to-be-adjusted area while displaying the to-be-displayed screen on the LED display screen in the calibration state, since the brightness of the high-brightness to-be-adjusted area in the to-be-displayed screen is increased, the highest brightness of the final displayed screen is increased, effectively improving the contrast of the displayed screen and the quality of the screen display. Description of the Drawings

[0018] Figure 1 is a flowchart of an LED display control method provided by an embodiment of the present application;

[0019] Figure 2 is a flowchart of another LED display control method provided by an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of a to-be-displayed screen provided by an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of the distribution of LED lights in an LED display screen provided by an embodiment of the present application;

[0022] Figure 5 is a schematic diagram of the corresponding relationship between the original brightness and the calibrated brightness provided by an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of the structure of an LED display control device provided by an embodiment of the present application;

[0024] Figure 7 It is a schematic structural diagram of an LED display screen display control device provided by an embodiment of the present application. Detailed implementation manners

[0025] In order to make the objectives, technical solutions and advantages of the present application clearer, the following further describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Additionally, it should be noted that for the convenience of description, only parts related to the present application are shown in the drawings rather than all of the content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of the operations can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the operations can be rearranged. When the operations are completed, the process can be terminated, but there may also be additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, and so on.

[0026] Figure 1 A flowchart of an LED display screen display control method provided by an embodiment of the present application is given. The LED display screen display control method provided by the embodiment of the present application can be executed by an LED display screen display control device, and the LED display screen display control device can be implemented in a hardware and / or software manner and integrated in the LED display screen display control device.

[0027] The following describes taking the LED display screen display control device executing the LED display screen display control method as an example. Refer to Figure 1 , the LED display screen display control method includes:

[0028] S101: Obtain a to-be-displayed picture and determine the picture gray-scale information of the to-be-displayed picture.

[0029] The LED display screen provided by this embodiment is an LED display screen after point-by-point correction, and the maximum brightness of each LED lamp in the corrected LED display screen is corrected to the same brightness when displaying. For example, assume that the original maximum brightness of the existing LED display screen before point-by-point correction is 1000 (the brightness unit in this embodiment is cd / m 2For example (which will not be elaborated further below), there is an LED lamp with a maximum original brightness of 1000, and the minimum brightness of the LED display screen is 0.2. At this time, the contrast ratio of the LED display screen is 5000:1. However, due to the discreteness of the LED lamps, there is an LED lamp with a maximum original brightness of 800 among them. To ensure the consistency of the LED display screen, point-by-point correction is performed on the LED display screen. For example, for an LED lamp with a maximum original brightness of 1000, its brightness will be reduced by 20% during display, so that when the LED display screen is finally displayed, the corrected brightness of each LED lamp is at most 800, and its minimum brightness remains unchanged. Then, the contrast ratio of the corrected LED display screen is 4000:1. The corrected LED display screen will lose brightness due to correction, which reduces the contrast ratio of the LED display screen. However, if the LED display screen is not corrected, the consistency of the displayed image is relatively poor and the display effect is not ideal. In this embodiment, before displaying the picture information, the high-brightness area in the picture information is first subjected to brightness compensation to increase the maximum brightness of the picture and improve the contrast ratio of the picture.

[0030] Exemplarily, obtain the picture to be displayed, and determine the picture gray-scale information of the picture to be displayed, where the picture gray-scale information records the gray-scale values of each pixel point in the picture to be displayed. For example, in the order of first in first out, the pictures to be displayed are sequentially extracted from the display queue, and the picture gray-scale information of each picture to be displayed is determined. Among them, the pictures to be displayed in the display queue are obtained by processing the original picture data according to the display requirements of the corrected LED display screen, and the corresponding picture gray-scale information is recorded in the pictures to be displayed.

[0031] In a possible embodiment, before obtaining the picture to be displayed and determining the picture gray-scale information of the picture to be displayed, first determine whether the LED display screen is working in the correction state. If the LED display screen is working in the correction state, then obtain the picture to be displayed and continue to execute the LED display screen display control process. If the LED display screen is not working in the correction state, there is no need to adjust the brightness of the picture to be displayed, and the picture to be displayed can be directly displayed on the LED display screen.

[0032] It can be understood that before displaying the picture, the brightness of the picture at this time cannot be directly obtained. Since the brightness of the picture is in a proportional relationship with the color gray-scale value, that is, the higher the gray-scale value of the corresponding pixel point, the higher the brightness of the picture during display. This solution uses the picture gray-scale information of the picture to be displayed to reflect the brightness information of the picture to be displayed during display.

[0033] S102: According to the picture gray-scale information, determine the area to be adjusted in the picture to be displayed where the gray-scale value reaches the set gray-scale threshold.

[0034] Exemplarily, according to the grayscale values of each pixel point in the to-be-displayed image recorded in the image grayscale information, determine the pixel points in the to-be-displayed image whose grayscale values reach the set grayscale threshold, and determine the to-be-adjusted area based on these pixel points. Optionally, the maximum value of the value range of the set grayscale threshold is the grayscale value corresponding to the final highest brightness after per-point calibration of the LED display screen, and the minimum value of the value range of the set grayscale threshold is the preset lower limit of the grayscale value, or the product of the highest brightness of the calibrated brightness after per-point calibration of the LED display screen and the set ratio.

[0035] It can be understood that since the grayscale of each pixel point in the to-be-adjusted area reaches the set grayscale threshold, the to-be-adjusted area is a high-grayscale area on the to-be-displayed image, and the to-be-adjusted area can be understood as the high-brightness area on the LED display screen when the to-be-displayed image is displayed on the LED display screen. Among them, the to-be-adjusted area can be a continuous area in the to-be-displayed image, or multiple discontinuous areas in the to-be-displayed image.

[0036] S103: Display the to-be-displayed image on the LED display screen in the calibration state, and increase the brightness of the LED display screen in the to-be-adjusted area.

[0037] Exemplarily, after determining the to-be-adjusted area in the to-be-displayed image, display the to-be-displayed image on the LED display screen in the calibration state, and increase the brightness of each pixel point in the to-be-adjusted area of the LED display screen, so as to increase the brightness of the to-be-displayed image in the to-be-adjusted area. Among them, after the LED display screen undergoes per-point calibration, it can work in the calibration state and the non-calibration state. When the LED display screen is not in the calibration state (i.e., working in the non-calibration state), the brightness displayed by each LED lamp is determined according to the to-be-displayed image. When the LED display screen is in the calibration state, the brightness displayed by each LED lamp is multiplied by the corresponding calibration coefficient on the basis of the original brightness, and at this time, the highest brightness displayed by each LED lamp is calibrated to the same level. In this embodiment, on the basis of the LED display screen being in the calibration state, the brightness of the LED lamps in the corresponding to-be-adjusted area is increased, and the highest brightness in the to-be-adjusted area is increased to improve the contrast of the final displayed image.

[0038] In a possible embodiment, to increase the brightness of the to-be-adjusted area, it may be to determine the first brightness distance from the brightness corresponding to the set grayscale threshold to the highest brightness after calibration of the LED display screen, and the second brightness distance from the brightness corresponding to the set grayscale threshold to the original highest brightness of the LED lamp, and increase the brightness of the to-be-adjusted area in proportion according to the ratio between the second brightness distance and the first brightness distance.

[0039] In a possible embodiment, the enhancement of the brightness of the area to be adjusted may adopt a non-linear adjustment method according to the characteristics of human eye light perception, so as to reduce the abruptness of the enhancement of the picture brightness and make the adjustment of the picture brightness smoother. Based on this, the greater the gray level difference between the gray level value of the pixel to be adjusted in the area to be adjusted and the set gray level threshold, the greater the brightness adjustment amplitude of the pixel to be adjusted.

[0040] It can be understood that, compared with directly displaying the picture to be displayed on the LED display screen, the brightness of the picture to be displayed outside the area to be adjusted is the same as the original displayed brightness, while the brightness of the picture to be displayed on the area to be adjusted is higher than the original displayed brightness. At this time, the final displayed contrast of the picture to be displayed is higher than the contrast of directly displaying the picture to be displayed.

[0041] Taking the picture to be displayed with 16-bit gray level as an example, assume that the original maximum brightness of the LED display screen before calibration is 1000 and the minimum is 0.2. The highest gray level value of 16-bit gray level is 65535. When the gray level values of the three colors (yellow, green, red) are all 65535, before calibrating the LED display screen, the maximum brightness of some LED lights reaches 1000, and some only reach 800. Although the gray level values are all 65535, there are differences in the brightness on the LED display screen. To ensure the consistency of the picture display, it is necessary to perform point-by-point calibration on the LED display screen. After calibration, the maximum calibration brightness of the LED display screen is 800 and the minimum is 0.2. In this embodiment, the set brightness threshold is determined to be 700, that is, it is necessary to enhance the brightness of the area that can reach 700 in the original display brightness after calibration. If the brightness of the LED light can reach 700 when the gray level value reaches 45875, the gray level value 45875 can be used as the set gray level threshold. During the video playback process, the video frame to be displayed is processed according to the display requirements of the LED display screen to obtain the picture to be displayed. The picture to be displayed is obtained, the picture gray level information of the picture to be displayed is determined, and the pixel points with gray level values between 45875 and 65535 are determined according to the picture gray level information, and the area to be adjusted is determined based on these pixel points.

[0042] Further, display the to-be-displayed screen on the LED display screen in the open calibration state, and increase the pixel brightness of each pixel in the to-be-adjusted area on the LED display screen, so as to increase the brightness range in the to-be-adjusted area from 700 - 800 to 700 - 1000, and obtain the to-be-displayed screen. At this time, the maximum brightness of the to-be-displayed screen is increased from 800 to 1000, and the to-be-displayed screen is displayed on the LED display screen. Then, the contrast of the to-be-displayed screen at this time is 5000:1. After increasing the brightness of the high-brightness area in the to-be-displayed screen, the maximum brightness of the to-be-displayed screen is increased to 1000 (the increased maximum brightness can be set according to the actual situation). Finally, the contrast becomes 5000:1, and only the brightness consistency of the LED lights with brightness between 700 and 800 is lost. During the video playback process, considering factors such as the probability of the brightness in this interval appearing concentratedly, the dynamic playback of the screen, the poor recognition ability of the human eye for high-brightness screens, and only a very small number of LED lights having large brightness differences, this method will not make people perceive the bad feeling of inconsistent overall display brightness of the LED display screen, but can obviously see the visual improvement brought by the increased contrast. In the case of low-brightness screens, the original screen consistency can be maintained, effectively improving the display effect of the LED display screen.

[0043] As described above, by determining the to-be-adjusted area in the to-be-displayed screen with a gray value reaching the set gray threshold according to the screen gray information of the to-be-displayed screen, and while displaying the to-be-displayed screen on the LED display screen in the open calibration state, increasing the brightness of the to-be-adjusted area, since the brightness of the high-brightness to-be-adjusted area in the to-be-displayed screen is increased, the maximum brightness of the final display screen is increased, effectively improving the contrast of the display screen and the display quality of the screen.

[0044] Based on the above embodiments, Figure 2 The flowchart of another LED display screen display control method provided by the embodiment of the present application is given. This LED display screen display control method is a specific implementation of the above LED display screen display control method. Refer to Figure 2 , this LED display screen display control method includes:

[0045] S201: Obtain the to-be-displayed screen and determine the screen gray information of the to-be-displayed screen.

[0046] S202: Determine that the to-be-displayed screen meets the brightness adjustment condition, and according to the screen gray information, determine the to-be-adjusted area in the to-be-displayed screen with a gray value reaching the set gray threshold.

[0047] After determining the screen grayscale information of the screen to be displayed, it is judged whether the screen to be displayed meets the brightness adjustment condition according to the screen grayscale information. If the brightness adjustment condition is not met, the brightness of the screen to be displayed is not adjusted, and the screen to be displayed is directly displayed on the LED display screen. If the brightness adjustment condition is met, the area to be adjusted with a grayscale value reaching the set grayscale threshold in the screen to be displayed is determined according to the screen grayscale information.

[0048] In a possible embodiment, the determination that the screen to be displayed meets the brightness adjustment condition includes:

[0049] S2021: Determine the grayscale distribution ratio of the grayscale values reaching the set grayscale threshold in the screen to be displayed according to the screen grayscale information.

[0050] Specifically, according to the screen grayscale information of the screen to be displayed, the pixel points with grayscale values reaching the set grayscale threshold in the screen to be displayed are determined, and the pixel point ratio of the pixel points with grayscale values reaching the set grayscale threshold relative to all the pixel points of the screen to be displayed is determined, and this pixel point ratio is determined as the grayscale distribution ratio of the grayscale values reaching the set grayscale threshold in the screen to be displayed.

[0051] In a possible embodiment, the grayscale distribution ratio can be determined by using the grayscale histogram of the screen to be displayed. Based on this, the determination of the grayscale distribution ratio of the grayscale values reaching the set grayscale threshold in the screen to be displayed includes:

[0052] S20211: Determine the grayscale histogram of the set pixel range in the screen to be displayed according to the screen grayscale information.

[0053] Specifically, after obtaining the screen to be displayed, the grayscale histogram of the screen to be displayed within the set pixel range is determined according to the screen grayscale information. Among them, the set pixel range can be the range corresponding to all the pixel points of the screen to be displayed, or the range corresponding to some pixel points of the screen to be displayed. Among them, the grayscale histogram records the number of pixel points corresponding to different grayscales within the set pixel range.

[0054] Exemplarily, according to the set pixel interval, pixel points are extracted from the screen to be displayed, and the range surrounded by the extracted pixel points is determined as the set pixel range, and the grayscale histogram within the set pixel range is determined according to the screen grayscale information.

[0055] S20212: Based on the grayscale histogram, determine the grayscale distribution ratio of the grayscale values reaching the set grayscale threshold in the set pixel range.

[0056] Specifically, according to the grayscale histogram, determine the number of pixel points whose grayscale values reach the set grayscale threshold, and determine the pixel ratio of these pixel points to all pixel points within the set pixel range, and determine this pixel ratio as the grayscale distribution ratio of the pixel points whose grayscale values reach the set grayscale threshold in the to-be-displayed image. Determining the grayscale distribution ratio through the grayscale histogram of the set pixel range in the to-be-displayed image reduces the data processing pressure and improves the data processing efficiency.

[0057] S2022: When the grayscale distribution ratio is below the set ratio threshold, determine that the to-be-displayed image meets the brightness adjustment condition.

[0058] Specifically, compare the determined grayscale distribution ratio with the set ratio threshold. If the grayscale distribution ratio is less than the set ratio threshold (for example, set the set ratio threshold to 50%), it is determined that the current to-be-displayed image meets the brightness adjustment condition. The set ratio threshold can be set according to the actual situation, and this application does not make a limitation.

[0059] If the grayscale distribution ratio is greater than or equal to the set ratio threshold, at this time, the high-grayscale area of the to-be-displayed image is relatively large. If the grayscale of the to-be-displayed image is further increased, the situation where the image inconsistency is too obvious will occur. In this embodiment, when the grayscale distribution ratio is greater than or equal to the set ratio threshold, it is determined that the to-be-displayed image does not meet the brightness adjustment condition, and there is no need to adjust the brightness of the to-be-displayed image, and the to-be-displayed image can be directly displayed on the LED display screen to ensure the image display quality. In a possible embodiment, when the to-be-displayed image does not meet the brightness adjustment condition, the brightness of the area to be adjusted in the to-be-displayed image can be continuously adjusted. However, when adjusting the brightness, on the basis of the original brightness adjustment, reduce the amplitude of the brightness increase of the area to be adjusted to reduce the sense of abruptness after the brightness adjustment and maintain the image display quality.

[0060] S203: According to the set brightness adjustment correspondence table, determine the brightness adjustment amplitude for the LED display screen in the area to be adjusted.

[0061] After determining the area to be adjusted in the to-be-displayed image whose grayscale value reaches the set grayscale threshold, according to the set brightness adjustment correspondence table, determine the brightness adjustment amplitude for each LED lamp of the LED display screen in the area to be adjusted when the to-be-displayed image is displayed. The brightness adjustment amplitude can be the brightness adjustment value that needs to be increased, or can also be the adjustment ratio coefficient of the brightness increase.

[0062] In this embodiment, the brightness of the area to be adjusted is adjusted through the brightness adjustment correspondence table. The brightness adjustment correspondence table provided in this embodiment records the correspondence relationship between the grayscale value and the brightness adjustment amplitude. Among them, the brightness adjustment correspondence table can be recorded in the form of a gamma table.

[0063] Further, according to the brightness adjustment correspondence table, the greater the gray level difference between the gray level value of the pixel to be adjusted in the area to be adjusted and the set gray level threshold, the greater the brightness adjustment amplitude for the pixel to be adjusted. That is, the greater the gray level value recorded in the brightness adjustment correspondence table, the greater the corresponding brightness adjustment amplitude. Then, the greater the original brightness before brightness adjustment, the greater the change rate of the corrected brightness relative to the original brightness after brightness adjustment.

[0064] Specifically, according to the gray level values corresponding to each pixel point in the area to be adjusted, the corresponding brightness adjustment amplitude is determined in the brightness adjustment correspondence table. In a possible embodiment, the brightness adjustment correspondence table records the correspondence between the gray level difference relative to the gray level threshold and the brightness adjustment amplitude. Correspondingly, when determining the brightness adjustment amplitude, specifically, according to the gray level difference between the gray level values corresponding to each pixel point in the area to be adjusted and the gray level threshold, the brightness adjustment amplitude corresponding to the gray level difference is determined in the brightness adjustment correspondence table.

[0065] S204: Display the to-be-displayed picture on the LED display screen in the calibration state, and increase the brightness of the LED display screen in the area to be adjusted according to the brightness adjustment amplitude.

[0066] After determining the brightness adjustment amplitude for the pixel to be adjusted, display the to-be-displayed picture on the LED display screen in the calibration state, and increase the brightness of the LED display screen in the corresponding area to be adjusted according to the determined brightness adjustment amplitude. Among them, the calculation formula for the brightness of each LED lamp in the area to be adjusted of the LED display screen is: Final brightness = Original brightness * Calibration coefficient * Adjustment ratio coefficient, or: Final brightness = Original brightness * Calibration coefficient + Brightness adjustment value.

[0067] Figure 3 is a schematic diagram of a to-be-displayed picture provided by an embodiment of the present application, as Figure 3 shown. Each square in the figure is each pixel point in the to-be-displayed picture. The gray level histogram can be determined according to the gray level values of each pixel point within the set pixel range in the to-be-displayed picture. For example, a gray level histogram is generated according to the gray level values of 1000 pixel points in the to-be-displayed picture. These 1000 similar points can be Figure 3It is randomly determined, or determined according to a set pixel interval (for example, an interval of 10 pixel points), or 1000 pixel points can be determined starting from a set pixel point (for example, the first pixel point) in the to-be-displayed screen, or a dot matrix area of n*m (where m*n = 1000) can be determined with the set pixel point as the vertex as the set pixel range. After determining the grayscale histogram, determine the pixel point ratio of the pixel points with grayscale above the set grayscale threshold in all pixel points in the grayscale histogram, and determine this pixel point ratio as the grayscale distribution ratio of the grayscale values reaching the set grayscale threshold in the to-be-displayed screen. If the grayscale distribution ratio is below the set ratio threshold (for example, 50%), then determine the area corresponding to the pixel points with the original grayscale value reaching the set grayscale threshold in the to-be-displayed screen as the area to be adjusted. For example, if the set grayscale threshold is set to 45875 (the corresponding set brightness threshold is 700), then the area corresponding to the pixel points with grayscale values exceeding 45875 can be determined as the area to be adjusted.

[0068] Suppose Figure 3 the A area in Figure 3 the dashed line range in) is determined as the area to be adjusted in the to-be-displayed screen, and the pixel points in the A area are the pixels to be adjusted. Then, it is necessary to determine the brightness adjustment amplitude for each pixel point in the A area according to the brightness adjustment correspondence table. Suppose the correction coefficient of the LED corresponding to A12 on the LED display screen is 0.8, the highest brightness of each LED lamp on the LED display screen before correction in the area to be adjusted is 800, the highest brightness of the LED display screen after correction is 800, the grayscale value of the pixel point A12 in the A area is 58982, and its corresponding original brightness before brightness adjustment is 720. According to the brightness adjustment correspondence table, the brightness adjustment amplitude of this pixel point is the adjustment ratio coefficient 1.48 (or the brightness adjustment value 132), and the finally displayed corrected brightness is 852. Suppose the grayscale value of the pixel point A16 in the area to be adjusted is 60620, and its corresponding original brightness before brightness adjustment is 740. According to the brightness adjustment correspondence table, the brightness adjustment amplitude of this pixel point is the adjustment ratio coefficient 1.52 (or the brightness adjustment value 160), and the finally displayed corrected brightness is 900. Suppose the grayscale value of the pixel point A47 in the area to be adjusted is 62258, and its corresponding original brightness before brightness adjustment is 760. Then, according to the brightness adjustment correspondence table, the brightness adjustment amplitude of this pixel point can be determined as the adjustment ratio coefficient 1.56 (or the brightness adjustment value 132), and the finally displayed corrected brightness is 949. Figure 5 is a schematic diagram of the correspondence relationship between the original brightness and the corrected brightness provided by the embodiment of the present application. As Figure 5 shown, in the figure, the relationship curve between the original brightness and the corrected brightness ( Figure 5The curve L) therein records the correspondence between the original brightness and the corrected brightness, where the vertical coordinate represents the original brightness and the horizontal coordinate represents the corrected brightness. For example, the gray value of a pixel in the to-be-displayed picture is 58982, the brightness corresponding to this pixel of the uncorrected LED display screen is 900, the correction coefficient of the corrected LED display screen is 0.8. For the LED corresponding to this pixel of the LED display screen, if it is displayed in the corrected manner, its original brightness is 900 * 0.8 = 720. After determining the corresponding brightness adjustment range through the brightness adjustment correspondence table as the adjustment ratio coefficient 1.48, then the corrected brightness of this LED at this time is 900 * 0.8 * 1.48 = 852.

[0069] Among them, the brightness differences between the original brightnesses of pixel points A12, A16, and A47 and the set brightness threshold (700) corresponding to the set gray threshold (45875) are 20, 40, and 60 respectively. The improvement amplitudes of the corrected brightnesses of pixel points A12, A16, and A47 relative to the original brightness are 132, 160, and 189 in sequence. That is, according to the brightness adjustment correspondence table, the greater the brightness difference between the pixel brightness of the to-be-adjusted pixel in the to-be-adjusted area and the set brightness threshold, the greater the brightness adjustment amplitude for the to-be-adjusted pixel.

[0070] Figure 4 is a schematic diagram of the distribution of LEDs in an LED display screen provided by an embodiment of the present application. The LEDs in the LED display screen correspond one-to-one with the pixel points in the to-be-displayed picture. For example, the B area in the LED display screen ( Figure 4 the dotted line range therein) corresponds to the A area in the to-be-displayed picture. The LEDs B12, B16, and B47 in the LED display screen correspond to the pixel points A12, A16, and A47 in the to-be-displayed picture respectively. When displaying the to-be-displayed picture, the final brightness of the LEDs corresponding to the to-be-adjusted area is increased according to the brightness adjustment amplitude. Compared with directly displaying the to-be-displayed picture, the brightness in area B is improved, realizing the improvement of the contrast of the final displayed picture.

[0071] In a possible embodiment, different brightness adjustment correspondence tables may be set according to different picture gray-scale information. Optionally, the brightness adjustment correspondence table may be a gamma table, and different gamma tables correspond to different gamma values, and the relationship curve between the gray-scale value and the brightness adjustment amplitude in the gamma table is adjusted through different gamma values. Based on this, before determining the brightness adjustment amplitude of the LED display screen in the area to be adjusted according to the set brightness adjustment correspondence table, it further includes: determining the set brightness adjustment correspondence table according to the picture gray-scale information, and different picture gray-scale information corresponds to different brightness adjustment correspondence tables. Exemplarily, different brightness adjustment correspondence tables are set according to different gray-scale distribution characteristics. After obtaining the picture to be displayed, the distribution ratio of the gray-scale in each range of the picture to be displayed is determined according to the picture gray-scale information, the gray-scale distribution characteristics of the picture to be displayed are determined according to the distribution ratio of the gray-scale in each range, and the corresponding brightness adjustment correspondence table is determined according to the gray-scale distribution characteristics.

[0072] In a possible embodiment, different brightness adjustment correspondence tables may be set according to different areas to be adjusted in the area to be adjusted. Based on this, before determining the brightness adjustment amplitude of the LED display screen in the area to be adjusted according to the set brightness adjustment correspondence table, it further includes: determining the set brightness adjustment correspondence table according to the area to be adjusted in the area to be adjusted, and different areas to be adjusted correspond to different brightness adjustment correspondence tables. Exemplarily, different brightness adjustment correspondence tables are set according to different areas to be adjusted in the area to be adjusted. After determining the area to be adjusted of the picture to be displayed, the area to be adjusted of the area to be adjusted is further determined, and the corresponding brightness adjustment correspondence table is determined according to the area to be adjusted. In addition, different areas to be adjusted may be divided according to the continuity of each pixel point in the area to be adjusted, different brightness adjustment correspondence tables are determined according to the partition areas of each area to be adjusted, and when determining the brightness adjustment amplitude according to the brightness adjustment correspondence table, the brightness adjustment amplitude is determined according to the corresponding brightness adjustment table respectively.

[0073] In a possible embodiment, different brightness adjustment correspondence tables may be set according to the maximum brightness of different LED lights of the LED display screen, and the maximum corrected brightness after adjustment according to the brightness adjustment correspondence table is not higher than the maximum brightness of the corresponding LED light. Based on this, before determining the brightness adjustment amplitude of the LED display screen in the area to be adjusted according to the set brightness adjustment correspondence table, it further includes: determining the maximum brightness of the LED display screen corresponding to the area to be adjusted, and determining the corresponding brightness adjustment correspondence table according to the maximum brightness. After determining the area to be adjusted, determine the LED light with the minimum maximum brightness among the LED lights corresponding to the area to be adjusted of the LED display screen, and determine the corresponding brightness adjustment correspondence table according to the maximum brightness of this LED light.

[0074] In a possible embodiment, different regions to be adjusted can be divided according to the continuity of each pixel point in the region to be adjusted, and different brightness adjustment correspondence tables can be set according to the maximum brightness of the LED lights in each region to be adjusted on the LED display screen. Based on this, before determining the brightness adjustment range of the LED display screen in the region to be adjusted according to the set brightness adjustment correspondence table, it further includes: dividing different regions to be adjusted according to the continuity of each pixel point in the region to be adjusted, determining the maximum brightness of the LED display screen in each region to be adjusted, and determining the corresponding brightness adjustment correspondence table for each region to be adjusted according to the maximum brightness. After determining the region to be adjusted, further determine the LED light with the minimum maximum brightness in each region to be adjusted of the LED display screen, and determine the corresponding brightness adjustment correspondence table for each region to be adjusted according to the maximum brightness of this LED light. When adjusting the brightness according to the brightness adjustment correspondence table, determine the brightness adjustment range respectively according to the corresponding brightness adjustment table.

[0075] As described above, by determining the region to be adjusted in the to-be-displayed picture where the gray value reaches the set gray threshold according to the picture gray information of the to-be-displayed picture, and increasing the brightness of the region to be adjusted while displaying the to-be-displayed picture on the LED display screen in the calibration state. Since the brightness of the high-brightness region to be adjusted in the to-be-displayed picture is increased, the maximum brightness of the final displayed picture is increased, effectively improving the contrast of the displayed picture and the picture display quality. On the basis of the original calibration of the LED display screen, the brightness of the high-brightness interval is adjusted, without the need to make hardware modifications to the LED display screen, effectively reducing the hardware development cost and having stronger applicability. And through the histogram statistics of the high-gray interval, it is automatically judged whether it is necessary to increase the brightness of the LED display screen when displaying the to-be-displayed picture, reducing the phenomenon of uneven picture brightness in the case of special pictures, especially static high-brightness pictures, ensuring the overall display effect, and without the need for manual switching of the brightness adjustment mode. When the high-gray region of the to-be-displayed picture is large, the brightness increase range can be reduced or the brightness adjustment can be cancelled to maintain the picture calibration effect. On the premise of ensuring the calibration effect, the overall picture contrast is improved and the picture display effect is enhanced. The adjustment of the brightness is dynamically adjusted in real time, the optimal brightness adjustment scheme is selected according to the to-be-displayed picture, and the increased value of the brightness does not increase in equal proportion, but looks up the table according to the human eye light-sensitive curve, reducing the sudden feeling after the brightness increase, and the display of the picture is more natural.

[0076] Figure 6 The structural schematic diagram of an LED display control device provided by an embodiment of the present application is given. Refer to Figure 6 As shown in the figure, the LED display control device includes a picture extraction module 31, a picture analysis module 32, and a picture processing module 33.

[0077] Among them, the screen extraction module 31 is used to obtain the screen to be displayed and determine the screen gray-scale information of the screen to be displayed; the screen analysis module 32 is used to determine the area to be adjusted with a gray-scale value reaching the set gray-scale threshold in the screen to be displayed according to the screen gray-scale information; the screen processing module 33 is used to display the screen to be displayed on the LED display screen in the calibration state and increase the brightness of the LED display screen in the area to be adjusted.

[0078] Above, by determining the area to be adjusted with a gray-scale value reaching the set gray-scale threshold in the screen to be displayed according to the screen gray-scale information of the screen to be displayed, and while displaying the screen to be displayed on the LED display screen in the calibration state, increasing the brightness of the area to be adjusted, since the brightness of the area to be adjusted with high brightness in the screen to be displayed is increased, the highest brightness of the final display screen is increased, effectively improving the contrast of the display screen and the quality of the screen display.

[0079] In a possible embodiment, the screen analysis module 32 is specifically used to determine that the screen to be displayed meets the brightness adjustment condition, and determine the area to be adjusted with a gray-scale value reaching the set gray-scale threshold in the screen to be displayed according to the screen gray-scale information.

[0080] In a possible embodiment, when the screen analysis module 32 determines that the screen to be displayed meets the brightness adjustment condition, specifically:

[0081] Determine the gray-scale distribution ratio of the gray-scale value reaching the set gray-scale threshold in the screen to be displayed according to the screen gray-scale information;

[0082] When the gray-scale distribution ratio is below the set ratio threshold, it is determined that the screen to be displayed meets the brightness adjustment condition.

[0083] In a possible embodiment, when the screen analysis module 32 determines the gray-scale distribution ratio of the gray-scale value reaching the set gray-scale threshold in the screen to be displayed, specifically:

[0084] Determine the gray-scale histogram of the set pixel range in the screen to be displayed according to the screen gray-scale information;

[0085] Based on the gray-scale histogram, determine the gray-scale distribution ratio of the gray-scale value reaching the set gray-scale threshold in the set pixel range.

[0086] In a possible embodiment, the greater the gray-scale difference between the gray-scale value of the pixel to be adjusted in the area to be adjusted and the set gray-scale threshold, the greater the brightness adjustment amplitude of the pixel to be adjusted.

[0087] In a possible embodiment, when the screen processing module 33 increases the brightness of the LED display screen in the area to be adjusted, specifically: according to the set brightness adjustment correspondence table, adjust the brightness of the area to be adjusted in the screen to be displayed, so as to increase the brightness of the LED display screen in the area to be adjusted.

[0088] In a possible embodiment, the device further includes an adjustment table determination module, configured to determine the set brightness adjustment correspondence table according to the screen gray information before determining the brightness adjustment amplitude of the LED display screen in the area to be adjusted according to the set brightness adjustment correspondence table, and different screen gray information corresponds to different brightness adjustment correspondence tables.

[0089] An embodiment of the present application further provides an LED display control device, which can integrate the LED display control device provided in the embodiment of the present application. Figure 7 is a schematic structural diagram of an LED display control device provided in an embodiment of the present application. Refer to Figure 7 , the LED display control device includes: an input device 43, an output device 44, a memory 42, and one or more processors 41; the memory 42 is used to store one or more programs; when the one or more programs are executed by the one or more processors 41, the one or more processors 41 are caused to implement the LED display control method provided in the above embodiment. Among them, the input device 43, the output device 44, the memory 42, and the processor 41 can be connected through a bus or other means, Figure 7 Taking connection through the bus as an example.

[0090] The memory 42, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the LED display control method described in any embodiment of the present application (for example, the screen extraction module 31, the screen analysis module 32, and the screen processing module 33 in the LED display control device). The memory 42 mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the device. In addition, the memory 42 can include high-speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 42 can further include a memory remotely set relative to the processor 41, and these remote memories can be connected to the device through a network. Examples of the above network include, but are not limited to, the Internet, an enterprise internal network, a local area network, a mobile communication network, and combinations thereof.

[0091] The input device 43 can be used to receive input digital or character information and generate key signal inputs related to the user settings and function controls of the device. The output device 44 can include display devices such as a display screen.

[0092] The processor 41 executes various functional applications and data processing of the device by running software programs, instructions, and modules stored in the memory 42, that is, implements the above-mentioned LED display screen display control method.

[0093] The above-provided LED display screen display control device, equipment, and computer can be used to execute the LED display screen display control method provided in any of the above embodiments, and have corresponding functions and beneficial effects.

[0094] The embodiment of the present application further provides a storage medium containing computer-executable instructions. The computer-executable instructions are used to execute the LED display screen display control method provided in the above embodiment when executed by a computer processor. The LED display screen display control method includes: obtaining a to-be-displayed picture, and determining the picture gray-scale information of the to-be-displayed picture; according to the picture gray-scale information, determining a to-be-adjusted area in the to-be-displayed picture where the gray-scale value reaches a set gray-scale threshold; displaying the to-be-displayed picture on an LED display screen in an open calibration state, and increasing the brightness of the LED display screen in the to-be-adjusted area.

[0095] Storage medium - any of various types of memory devices or storage devices. The term "storage medium" is intended to include: installation media, such as CD-ROMs, floppy disks, or magnetic tape devices; computer system memories or random access memories, such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc.; non-volatile memories, such as flash memories, magnetic media (such as hard disks or optical storage); registers or other similar types of memory elements, etc. The storage medium can also include other types of memories or combinations thereof. Additionally, the storage medium can be located in a first computer system in which the program is executed, or can be located in a different second computer system that is connected to the first computer system through a network (such as the Internet). The second computer system can provide program instructions to the first computer for execution. The term "storage medium" can include two or more storage media that can reside in different locations (such as in different computer systems connected through a network). The storage medium can store program instructions (such as specifically implemented as a computer program) executable by one or more processors.

[0096] Certainly, for a storage medium containing computer-executable instructions provided by an embodiment of the present application, the computer-executable instructions are not limited to the LED display screen display control method described above, and can also execute related operations in the LED display screen display control method provided by any embodiment of the present application.

[0097] The LED display screen display control device, equipment and storage medium provided in the above embodiments can execute the LED display screen display control method provided by any embodiment of the present application. For technical details not described in detail in the above embodiments, reference can be made to the LED display screen display control method provided by any embodiment of the present application.

[0098] The above is only a preferred embodiment of the present application and the technical principles applied. The present application is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments and substitutions that can be made by those skilled in the art will not depart from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments. Without departing from the concept of the present application, more other equivalent embodiments can be included, and the scope of the present application is determined by the scope of the claims.

Claims

1. A method for controlling the display of an LED display screen, characterized in that, Including: Obtain the to-be-displayed screen and determine the screen gray-scale information of the to-be-displayed screen; According to the screen gray-scale information, determine the to-be-adjusted area in the to-be-displayed screen where the gray-scale value reaches the set gray-scale threshold. Among them, the maximum value of the value range of the set gray-scale threshold is the gray-scale value corresponding to the final highest brightness after the point-by-point correction of the LED display screen, the minimum value of the value range of the set gray-scale threshold is the preset lower limit of the gray-scale value, or the set gray-scale threshold is the product of the highest brightness of the corrected brightness after the point-by-point correction of the LED display screen and the set ratio; Display the to-be-displayed screen on the LED display screen in the calibration state, and increase the brightness of the LED display screen in the to-be-adjusted area.

2. The method for controlling the display of an LED display screen according to claim 1, characterized in that, The step of determining the to-be-adjusted area in the to-be-displayed screen where the gray-scale value reaches the set gray-scale threshold according to the screen gray-scale information includes: Determine that the to-be-displayed screen meets the brightness adjustment condition, and according to the screen gray-scale information, determine the to-be-adjusted area in the to-be-displayed screen where the gray-scale value reaches the set gray-scale threshold.

3. The method for controlling the display of an LED display screen according to claim 2, characterized in that, The step of determining that the to-be-displayed screen meets the brightness adjustment condition includes: According to the screen gray-scale information, determine the gray-scale distribution ratio in the to-be-displayed screen where the gray-scale value reaches the set gray-scale threshold; When the gray-scale distribution ratio is below the set ratio threshold, determine that the to-be-displayed screen meets the brightness adjustment condition.

4. The method for controlling the display of an LED display screen according to claim 3, characterized in that, The step of determining the gray-scale distribution ratio in the to-be-displayed screen where the gray-scale value reaches the set gray-scale threshold includes: According to the screen gray-scale information, determine the gray-scale histogram of the set pixel range in the to-be-displayed screen; Based on the gray-scale histogram, determine the gray-scale distribution ratio of the gray-scale value reaching the set gray-scale threshold in the set pixel range.

5. The method for controlling the display of an LED display screen according to claim 1, characterized in that, The greater the gray-scale gap between the gray-scale value of the to-be-adjusted pixel in the to-be-adjusted area and the set gray-scale threshold, the greater the brightness adjustment amplitude of the to-be-adjusted pixel.

6. The method for controlling the display of an LED display screen according to claim 1, characterized in that, Before increasing the brightness of the LED display screen in the to-be-adjusted area, it further includes: According to the set brightness adjustment correspondence table, determine the brightness adjustment amplitude of the LED display screen in the to-be-adjusted area.

7. The method for controlling the display of an LED display screen according to claim 6, characterized in that, Before determining the brightness adjustment amplitude of the LED display screen in the to-be-adjusted area according to the set brightness adjustment correspondence table, it further includes: Determine the set brightness adjustment correspondence table according to the screen gray-scale information, and different screen gray-scale information corresponds to different brightness adjustment correspondence tables.

8. An apparatus for controlling the display of an LED display screen, characterized in that, Including a screen extraction module, a screen analysis module and a screen processing module, where: The screen extraction module is used to obtain the to-be-displayed screen and determine the screen gray-scale information of the to-be-displayed screen; The screen analysis module is used to determine the to-be-adjusted area in the to-be-displayed screen where the gray-scale value reaches the set gray-scale threshold according to the screen gray-scale information. Among them, the maximum value of the value range of the set gray-scale threshold is the gray-scale value corresponding to the final highest brightness after the point-by-point correction of the LED display screen, the minimum value of the value range of the set gray-scale threshold is the preset lower limit of the gray-scale value, or the set gray-scale threshold is the product of the highest brightness of the corrected brightness after the point-by-point correction of the LED display screen and the set ratio; The screen processing module is configured to display the to-be-displayed screen on the LED display screen in the calibration state and increase the brightness of the LED display screen in the to-be-adjusted area.

9. An equipment for controlling the display of an LED display screen, characterized in that, It includes: a memory and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the LED display screen display control method according to any one of claims 1-7.

10. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions are used to execute the LED display screen display control method according to any one of claims 1-7 when executed by a computer processor.

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