Display screen brightness compensation method and device and electronic equipment

Abstract

The invention discloses a display screen brightness compensation method and device and electronic equipment, and relates to the technical field of image display. The specific implementation process comprises the following steps: firstly, calculating a brightness compensation matrix in a non-illumination environment by combining basic parameters of different areas of the curved display screen and relative positions of a camera and the display screen; secondly, dividing illumination scenes according to the illumination parameters, and adopting different compensation methods for different illumination scenes; in the first illumination scene, adjusting the overall brightness of the display screen through the comfortable brightness interval; in the second illumination scene, the illumination brightness is calculated according to the illumination angle and intensity, so that display image distortion caused by the illumination brightness is eliminated; in the third illumination scene, the illumination brightness and the actual brightness distribution are compared, so that the glare position is recognized and processed; and finally, the display quality of the curved-surface display screen after brightness compensation is evaluated, and if the requirement is not met, brightness compensation is performed again until the preset quality standard is reached, so that the brightness compensation effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of image display technology, and in particular to a display screen brightness compensation method, device and electronic equipment. Background Art

[0002] As an important innovation in modern display technology, curved display screens provide users with a wider viewing angle and a more immersive viewing experience through their curved screen design. However, due to the physical curvature of the curved screen, the distribution and projection of the backlight source are difficult to be completely uniform, resulting in uneven brightness in the edge areas of the screen when displaying black or dark scenes, which will weaken the image contrast and color reproduction capabilities and affect the overall visual effect. Therefore, the display brightness compensation method is particularly important. This method effectively improves the brightness uniformity and color expression of the screen by optimizing backlight control or local dimming technology, thereby improving the visual effect of the curved screen and enhancing the user's viewing experience.

[0003] At present, the existing technology often performs brightness compensation processing on curved display screens in different regions, without fully considering the actual impact of changes in external ambient light on the brightness display of the curved display screen, resulting in poor brightness compensation effect, making the screen still appear dim or uneven in brightness in a bright environment.

[0004] In order to solve the above problems, a display screen brightness compensation method, device and electronic equipment are proposed. Summary of the invention

[0005] The present invention provides a display screen brightness compensation method, device and electronic device for brightness compensation of curved display screens. In order to solve the problems existing in the prior art, the present invention obtains a brightness compensation matrix in a non-lighting environment according to the curvature radius, arc length and pixel density of different areas of the curved display screen, combined with the relative position of the camera and the display screen; secondly, the lighting scene is divided according to the lighting parameters, and brightness compensation calculations are performed for different lighting scenes respectively; in the first lighting scene, the overall brightness of the display screen is adjusted by a comfortable brightness range; in the second lighting scene, the light brightness is calculated according to the lighting angle and intensity, so as to eliminate the display image distortion caused by the light brightness; in the third lighting scene, the light brightness and the actual brightness distribution are compared, so as to identify the glare position and process it; finally, by comparing the ideal image with the adjusted display image, the display quality is evaluated, and if the requirements are not met, the brightness compensation is performed again until the predetermined quality standard is reached, thereby improving the effect of brightness compensation.

[0006] A display screen brightness compensation method, the specific implementation steps include:

[0007] Divide the curved display screen into a number of sub-areas of equal size, and obtain basic parameters of each of the sub-areas; set different lighting scenes, and obtain ideal images, actual images, and lighting parameters of the sub-areas;

[0008] Obtaining an ideal brightness distribution and an actual brightness distribution in a no-light environment through a brightness mapping function; performing brightness analysis on different areas of the curved display screen in combination with the basic parameters to obtain a first brightness compensation matrix;

[0009] Dividing the illumination scene according to the illumination parameter to obtain a first illumination scene, a second illumination scene and a third illumination scene;

[0010] Combining the first brightness compensation matrix and the ideal brightness distribution, obtaining the brightness compensation distribution under the first illumination scene; adjusting the brightness compensation distribution according to a predetermined comfortable brightness range to obtain a first grayscale compensation matrix;

[0011] Obtaining an average brightness of the sub-area under the second illumination scene, combining the illumination parameters, obtaining the first light brightness and determining a second grayscale compensation matrix;

[0012] According to the illumination parameters in the third illumination scene, obtaining the second light brightness and determining the glare position; obtaining a third grayscale compensation matrix through the second light brightness at the glare position and the first brightness compensation matrix;

[0013] The brightness of the curved display screen under different lighting scenes is compensated according to different grayscale compensation matrices, and an adjusted image after brightness compensation is obtained; and the display quality of the curved display screen is evaluated in combination with a brightness uniformity index and a structural similarity index.

[0014] Preferably, the actual image corresponds to a display image of the curved display screen taken by an HDR camera in the dark environment; the basic parameters of each sub-area include curvature radius, arc length, pixel density and peak brightness; the curvature radius is calculated by the arc length and chord height of the sub-area; the peak brightness is measured by a photometer on the curved display screen of different pure color pictures in the dark environment, including red peak brightness, green peak brightness and blue peak brightness; the lighting parameters include light intensity and lighting angle.

[0015] Preferably, the process of acquiring the ideal brightness distribution and the actual brightness distribution, and performing brightness analysis on different areas of the curved display screen in combination with the basic parameters includes:

[0016] According to the basic parameters, the curvature radius, arc length, pixel density and peak brightness are obtained; the ideal image and the peak brightness are input into the brightness mapping function to obtain the ideal brightness distribution; the actual image and the peak brightness are input into the brightness mapping function to obtain the actual brightness distribution; according to the distribution of the sub-area, the ideal brightness distribution of the sub-area and the actual brightness distribution of the sub-area are obtained; the distances from the left and right edges of the sub-area to the camera lens and the angles between the camera lens and the left and right edges of the sub-area are obtained, and the first brightness compensation matrix of the sub-area is generated in combination with the curvature radius, the arc length and the pixel density of the sub-area.

[0017] Preferably, the implementation process of dividing the lighting scene according to the lighting parameters includes:

[0018] According to the illumination parameters of the sub-area, the illumination intensity corresponding to the sub-area is obtained; the overall illumination intensity of the curved display screen is obtained by combining the illumination intensities of all the sub-areas; if the overall illumination intensity is less than a first predetermined light intensity threshold, the illumination scene is the first illumination scene; if the overall illumination intensity is greater than or equal to the first predetermined light intensity threshold and the overall illumination intensity is less than the second predetermined light intensity threshold, the illumination scene is the second illumination scene; if the overall illumination intensity is greater than or equal to the second predetermined light intensity threshold, the illumination scene is the third illumination scene.

[0019] Preferably, the process of acquiring the brightness compensation distribution and adjusting the brightness compensation distribution according to the predetermined comfortable brightness interval includes:

[0020] The brightness compensation distribution is obtained by combining the first brightness compensation matrix and the ideal brightness distribution; the brightness compensation distribution is overall scaled according to the predetermined comfortable brightness range to generate a second brightness compensation matrix; the first brightness compensation matrix and the second brightness compensation matrix are combined to obtain a first global brightness compensation matrix; and the first global brightness compensation matrix is ​​mapped to the first grayscale compensation matrix through a grayscale mapping function.

[0021] Preferably, the process of acquiring the average brightness of the sub-area under the second illumination scene, combining the illumination parameters, obtaining the first light brightness and determining the second grayscale compensation matrix includes:

[0022] According to the illumination parameters, the illumination angle and illumination intensity of the sub-areas are respectively obtained; according to the distribution of the sub-areas, the ideal brightness distribution is divided and the mean is calculated to obtain the average brightness of each sub-area; the first light brightness of each sub-area is generated by combining the illumination angle, the illumination intensity and the average brightness, and converted into a third brightness compensation matrix through an all-one matrix; the second global brightness compensation matrix is ​​obtained through the first brightness compensation matrix and the third brightness compensation matrix, and the second grayscale compensation matrix is ​​determined in combination with the grayscale mapping function.

[0023] Preferably, according to the illumination parameters in the third illumination scene, the second light brightness is obtained and the glare position is determined; and the implementation process of obtaining the third grayscale compensation matrix through the second light brightness at the glare position and the first brightness compensation matrix includes:

[0024] According to the size of the sub-area, the ideal brightness distribution is divided to obtain the ideal brightness distribution of the sub-area; the second light brightness of the sub-area is obtained through the lighting parameters under the third lighting scene and the ideal brightness distribution of the sub-area; if the brightness value of the pixel position of the sub-area is less than the second light brightness, the pixel position corresponding to the sub-area is the glare position; combining the difference between the second light brightness and the corresponding brightness value of the glare position, a fourth brightness compensation matrix is ​​obtained; through the first brightness compensation matrix and the fourth brightness compensation matrix, a third global brightness compensation matrix is ​​obtained, and the third grayscale compensation matrix is ​​determined in combination with the grayscale mapping function.

[0025] Preferably, the specific implementation process of evaluating the display quality of the curved display screen by combining the brightness uniformity index and the structural similarity index includes:

[0026] According to the adjusted image and the brightness mapping function, an adjusted brightness distribution is obtained; in combination with the ideal image and the adjusted brightness distribution, a reference brightness distribution is obtained; by comparing the maximum brightness value and the minimum brightness value of the reference brightness distribution, the brightness uniformity index is generated; according to the structural similarity function, the structural similarity index is obtained; in combination with the brightness uniformity index and the structural similarity index, a display quality index of the curved display screen is obtained;

[0027] If the display quality index is greater than or equal to a predetermined quality threshold, brightness compensation is stopped; otherwise, brightness compensation is performed again according to the adjusted image and the corresponding illumination parameters.

[0028] A display screen brightness compensation device, comprising:

[0029] The data acquisition module divides the curved display screen into a number of sub-areas of the same size and obtains basic parameters of each of the sub-areas; sets different lighting scenes to obtain ideal images, actual images and lighting parameters of the sub-areas;

[0030] The system brightness compensation module obtains the ideal brightness distribution and the actual brightness distribution in a no-light environment through a brightness mapping function; performs regional brightness analysis on the curved display screen in combination with the basic parameters to obtain a first brightness compensation matrix;

[0031] A lighting environment assessment module, which divides the lighting scene according to the lighting parameters to obtain a first lighting scene, a second lighting scene and a third lighting scene;

[0032] The illumination scene brightness compensation module obtains the brightness compensation distribution under the first illumination scene by combining the first brightness compensation matrix and the ideal brightness distribution; adjusts the brightness compensation distribution according to a predetermined comfortable brightness range to obtain a first grayscale compensation matrix; obtains the average brightness of the sub-area under the second illumination scene, obtains the first light brightness and determines the second grayscale compensation matrix by combining the illumination parameters; obtains the second light brightness and determines the glare position according to the illumination parameters under the third illumination scene; obtains the third grayscale compensation matrix by the second light brightness at the glare position and the first brightness compensation matrix;

[0033] The brightness compensation evaluation module performs brightness compensation on the curved display screen under different lighting scenes according to different grayscale compensation matrices, and obtains an adjusted image after brightness compensation; and evaluates the display quality of the curved display screen by combining the brightness uniformity index and the structural similarity index.

[0034] An electronic device comprises a memory and a processor, wherein the memory stores a display screen brightness compensation program that can be run on the processor, and the processor implements the steps of the display screen brightness compensation method as described above when executing the display screen brightness compensation program.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention proposes a system brightness compensation method to perform regional brightness analysis on a curved display screen in a non-illuminated environment. This method combines the ideal image, the actual image, the basic parameters of the sub-region, and the distance between the HDR camera and the display screen to accurately calculate the inherent error of the curved display screen and the influence of the user's viewing position on the display brightness, thereby obtaining an accurate brightness compensation matrix; it effectively improves the uneven brightness problem of the curved display screen caused by physical curvature, further improves the effect of brightness compensation, and is helpful for the evaluation of the brightness compensation matrix in subsequent lighting scenes.

[0037] 2. The present invention proposes a method for compensating the brightness of lighting scenes. According to different lighting parameters, the lighting scenes are subdivided into the first, second and third lighting scenes, and targeted grayscale compensation strategies are adopted respectively. For the first lighting scene, i.e., a dim environment, the brightness of the display screen is adjusted to a predetermined comfortable brightness range, which can effectively reduce visual fatigue; for the second lighting scene, i.e., a daily lighting environment, the light brightness of the sub-range is calculated and a grayscale compensation matrix is ​​obtained, which reduces image distortion caused by light reflection; for the third lighting scene, i.e., a strong light environment, glare position identification and processing are performed to weaken the glare phenomenon of the display screen; the curved display screen can dynamically adapt to changes in external environmental lighting, and the brightness compensation effect of the curved display screen under various lighting conditions is improved.

[0038] 3. The present invention conducts a comprehensive evaluation of the display results after brightness compensation, thereby improving the visual effect after brightness compensation. By combining the ideal image with the adjusted image after brightness compensation, a dual evaluation of the brightness uniformity index and the structural similarity index is performed to comprehensively measure the display quality of the curved display screen. This comprehensive evaluation mechanism not only ensures that the image after brightness compensation reaches a high level in terms of brightness uniformity and structural similarity, but also re-performs brightness compensation through a feedback mechanism when the display quality does not meet the standards, thereby continuously optimizing and improving the final display effect, ensuring that users get the best visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A flow chart of a display screen brightness compensation method provided by an embodiment of the present invention;

[0040] Figure 2 A schematic diagram of the relative positions of a camera and a curved display screen provided by an embodiment of the present invention;

[0041] Figure 3 A flowchart of brightness compensation for different lighting scenes provided by an embodiment of the present invention;

[0042] Figure 4 A structural diagram of a display screen brightness compensation device provided by an embodiment of the present invention;

[0043] Figure 5 A structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Curved displays can provide a more immersive viewing experience due to their curved design, reduce visual distortion at the edges of the screen, and enhance field of view coverage, which can effectively enhance the user's sense of immersion, especially in scenes such as games and movies. In addition, the curved design is more in line with the natural field of view of the human eye, reducing eye fatigue. However, due to the uneven surface of the screen, the curved display screen will have uneven brightness under different viewing angles and ambient light, which not only weakens the viewing experience, but also causes visual fatigue. Therefore, it is particularly necessary to introduce a brightness compensation method that can automatically adjust the brightness distribution according to the ambient light intensity of each area of ​​the curved display screen. Through precise brightness compensation technology, it can ensure that the screen maintains a consistent display effect under different lighting conditions, further improving the comfort and visual quality of the user experience.

[0046] The present invention provides a display screen brightness compensation method, device and electronic device to compensate the display brightness of a curved display screen to ensure that users have the best visual experience. In order to illustrate the effectiveness of the method and system of the present invention, a specific description will be given in combination with the accompanying drawings of this embodiment and the following three embodiments.

[0047] Embodiment 1

[0048] The embodiment of the present application discloses a display screen brightness compensation method to achieve brightness compensation for a brand A computer curved screen. Figure 1 The specific steps of the method proposed in the present invention include: S101. Acquire basic parameters, ideal images, actual images and lighting parameters; S102. Compare the ideal brightness distribution with the actual brightness distribution in the no-light scene to obtain system brightness compensation; S103. Divide the lighting scene into a first lighting scene, a second lighting scene and a third lighting scene according to the lighting parameters; S104. Adjust the brightness distribution in the first lighting scene according to a predetermined comfortable brightness range to obtain a first grayscale compensation matrix; S105. Calculate the first light brightness and determine the second grayscale compensation matrix according to the lighting parameters in the second lighting scene; S106. Determine the glare position according to the second light brightness in the third lighting scene, and process to obtain the third grayscale compensation matrix; S107. Perform brightness compensation according to different grayscale compensation matrices, and evaluate the display quality of the curved display screen after compensation.

[0049] Furthermore, the curved display screen is divided into a number of sub-areas of equal size, and basic parameters of each sub-area are obtained; different lighting scenes are set to obtain ideal images, actual images and lighting parameters of the sub-areas, corresponding to the above-mentioned step S101; wherein the actual image corresponds to a display image of the curved display screen taken by an HDR camera in the no-light environment; the basic parameters of each sub-area include curvature radius, arc length, pixel density and peak brightness; the curvature radius is calculated by the arc length and chord height of the sub-area; the peak brightness is measured by a photometer on the curved display screen of different pure color pictures in the no-light environment, including red peak brightness, green peak brightness and blue peak brightness; the lighting parameters include light intensity and lighting angle.

[0050] Specifically, when performing brightness compensation on the curved screen of brand A computer, selecting these data can help achieve precise brightness adjustment, thereby improving the display effect. Basic parameters (such as curvature radius, arc length, pixel density and peak brightness) can identify the physical characteristics of each area of ​​the screen, ensuring that the compensation process is accurately adjusted for the different characteristics of each area; the red, green and blue peak brightness data measured by the photometer helps to calibrate the basic brightness of the screen in a dark environment to ensure display uniformity under standard conditions; the actual image captured by the HDR camera is used to simulate the user's real visual performance of the display results of brand A computer curved screen. Here, the HDR camera lens corresponds to the user's viewing position, so as to obtain the user's actual viewing results under different lighting scenarios, and further ensure that the display results after brightness compensation are more in line with the user's viewing needs.

[0051] The embodiment of the present application divides the curved display screen into several sub-areas and obtains basic parameters, actual images and lighting parameters under different lighting scenes, so as to accurately understand the brightness changes and display effects of each sub-area under different lighting conditions, thereby achieving targeted brightness compensation and image optimization, ensuring that consistent display quality can be maintained in a variety of lighting environments, and providing data support for subsequent brightness compensation.

[0052] Furthermore, an ideal brightness distribution and an actual brightness distribution in a non-illuminated environment are obtained through a brightness mapping function; brightness analysis is performed on different areas of the curved display screen in combination with the basic parameters to obtain a first brightness compensation matrix, corresponding to the above step S102; the specific implementation process includes:

[0053] According to the basic parameters, the radius of curvature, arc length, pixel density and peak brightness are obtained; the ideal image and the peak brightness are input into the brightness mapping function to obtain the ideal brightness distribution; the actual image and the peak brightness are input into the brightness mapping function to obtain the actual brightness distribution; the specific formulas of the ideal brightness distribution and the actual brightness distribution are:

[0054]

[0055] Wherein, M() represents the brightness mapping function, which is used to map the grayscale value of the RGB image into a brightness value; represents the ideal brightness distribution; I represents the actual brightness distribution; I represents the input image of the brightness mapping function; I r ,I g and I b Represents the grayscale value of I in the red, green and blue channels respectively, I r ,I g and I b The values ​​of L are all in the interval [0,255]; r , L g and L b I respectively represent the red peak brightness, green peak brightness and blue peak brightness of the curved display screen; ideal and I act represent the ideal image and the actual image respectively;

[0056] According to the distribution of the sub-areas, the ideal brightness distribution and the actual brightness distribution are divided to obtain the sub-area ideal brightness distribution and the sub-area actual brightness distribution; Figure 2 , obtain the distances from the left and right edges of the sub-area to the camera lens and the angles between the camera lens and the left and right edges of the sub-area, and combine the curvature radius, the arc length and the pixel density of the sub-area to generate a first brightness compensation matrix. The specific calculation formula is:

[0057]

[0058] in, The first brightness compensation matrix representing the i-th sub-area includes a first brightness compensation value for each pixel position of the curved display screen; represents the difference between the ideal brightness distribution of the i-th sub-region and the actual brightness distribution of the sub-region; and Respectively represent the distance from the left edge and right edge of the i-th sub-area to the camera lens; r irepresents the curvature radius of the ith sub-region; Avg() is the mean calculation function; l i represents the arc length of the ith sub-region; Min() is the minimum value calculation function; represents the angle between the camera lens and the left and right edges of the i-th sub-area; p i represents the pixel density of the i-th sub-area; β1 and β2 respectively represent the influencing factors of distance and pixel density on the brightness change of the curved display screen, and the influencing factors are obtained by fitting through a nonlinear regression method.

[0059] Specifically, in a dark environment, different areas of the curved screen of brand A computers often have uneven brightness due to the characteristics of component bending, pixel density changes, etc. Combining the basic parameters of the sub-areas for brightness analysis helps to carry out targeted brightness compensation for each area of ​​the curved screen, especially the areas with larger curvatures; further considering the distance from the user's eyes to each area, the visual range, and the physical characteristics of the area, the inherent brightness error of the curved screen of brand A computers can be obtained more accurately, which not only improves the display effect of the screen, but also lays the foundation for further dynamic brightness compensation in different lighting environments.

[0060] The embodiment of the present application uses brightness mapping functions and basic parameters to analyze the brightness distribution of different areas of the curved display screen. This process can achieve accurate brightness compensation for each sub-area of ​​the curved display screen. The compensation process takes into account factors such as the curvature, pixel density, viewing distance, and line of sight of the sub-area, and combines the nonlinear regression method to fit the influencing factors to ensure brightness uniformity at different viewing angles and distances; it effectively solves the problem of uneven brightness caused by the change in curvature of the curved display screen, improves the effect of brightness compensation of the curved display screen, thereby improving the display quality and visual consistency of the image, and optimizing the user's viewing experience.

[0061] Furthermore, the illumination scene is divided according to the illumination parameter to obtain a first illumination scene, a second illumination scene and a third illumination scene, which corresponds to the above step S103; the specific implementation process includes:

[0062] According to the illumination parameters of the sub-area, the illumination intensity corresponding to the sub-area is obtained; the overall illumination intensity of the curved display screen is obtained by combining the illumination intensities of all the sub-areas; if the overall illumination intensity is less than a first predetermined light intensity threshold, the illumination scene is the first illumination scene; if the overall illumination intensity is greater than or equal to the first predetermined light intensity threshold and the overall illumination intensity is less than the second predetermined light intensity threshold, the illumination scene is the second illumination scene; if the overall illumination intensity is greater than or equal to the second predetermined light intensity threshold, the illumination scene is the third illumination scene.

[0063] The embodiment of the present application calculates the overall illumination intensity of the curved display screen through illumination parameters, and sets the light intensity threshold to flexibly divide the illumination scenes. By setting different predetermined light intensity thresholds, it is possible to effectively cope with various environmental changes from low light to high light, ensuring that the subsequent brightness adjustment of the curved display screen under different illumination conditions is more accurate.

[0064] Further, combining the first brightness compensation matrix and the ideal brightness distribution, obtaining the brightness compensation distribution under the first illumination scene; adjusting the brightness compensation distribution according to a predetermined comfortable brightness range to obtain a first grayscale compensation matrix, corresponding to Figure 1 Step S104 of Figure 3 The specific implementation process includes:

[0065] The first brightness compensation matrix is ​​added to the ideal brightness distribution to obtain the brightness compensation distribution; the brightness compensation distribution is overall scaled according to the predetermined comfortable brightness range to generate a second brightness compensation matrix, and the specific calculation formula is:

[0066]

[0067] in, represents the second brightness compensation matrix, including the second brightness compensation value of each pixel position of the curved display screen; represents the brightness compensation distribution; α1 and α2 represent the lower limit and upper limit of the predetermined comfortable brightness interval [α1, α2] respectively; and Respectively The maximum and minimum brightness values;

[0068] The first brightness compensation matrix and the second brightness compensation matrix are added to obtain a first global brightness compensation matrix; the first global brightness compensation matrix is ​​mapped to the first grayscale compensation matrix through a grayscale mapping function, and the specific calculation formula is:

[0069]

[0070] in, represents the first grayscale compensation matrix, including the first grayscale compensation value of each pixel position of the curved display screen; H() represents the grayscale mapping function; I represents the first global brightness compensation matrix; act2 and represent the ideal image and the ideal brightness distribution respectively; Represents the division operation of elements at corresponding positions.

[0071] Specifically, the first lighting scene is a dim light scene, and the ambient light intensity is generally 0-50 lux. In such a dim environment, if the brightness of the curved screen of brand A computer is too high, it will cause discomfort to the user's eyes and even cause visual fatigue; if the brightness is too low, it may affect the clarity of the picture details. Therefore, by finely adjusting the brightness of the curved screen of brand A computer in a predetermined comfortable brightness range, the user's visual experience can be optimized, visual fatigue can be reduced, and the screen display effect can be ensured to remain comfortable and clear in a low-light environment.

[0072] The embodiment of the present application generates a brightness compensation distribution by combining the first brightness compensation matrix and the predetermined comfortable brightness range and adjusts it to a brightness range that meets the user's visual comfort, which can effectively improve the visual experience of the curved display screen in dim light scenes. By calculating the ideal brightness distribution and performing overall scaling, the compensation matrix is ​​made more adaptable to the lighting conditions of the scene, ensuring a smooth transition of brightness within the comfortable range; the grayscale compensation matrix generated by the grayscale mapping function is combined to further optimize the consistency and fineness of the brightness compensation effect, enhancing the display performance and viewing comfort in dim light scenes.

[0073] Further, the average brightness of the sub-area under the second illumination scene is obtained, and the first light brightness is obtained by combining the illumination parameters and determining the second grayscale compensation matrix, corresponding to Figure 1 Step S105 of Figure 3 The implementation process includes:

[0074] According to the illumination parameters, the illumination angle and illumination intensity of the sub-areas are respectively obtained; according to the distribution of the sub-areas, the ideal brightness distribution is divided and the mean is calculated to obtain the average brightness of each sub-area; the illumination angle, the illumination intensity and the average brightness are combined to generate the first light brightness of each sub-area, and the third brightness compensation matrix is ​​obtained by integration. The specific calculation formula is:

[0075]

[0076] in, A third brightness compensation matrix representing the i-th sub-area, wherein the third brightness compensation matrix includes a third brightness compensation value at each pixel position of the curved display screen; represents the brightness of the first light in the i-th sub-area under the second lighting scene; J m×n represents an all-one matrix of size m×n, where m×n is the size of the sub-region; c represents the total number of light sources in the second lighting scene; represents the illumination intensity of the j-th light source on the i-th sub-area in the second illumination scene; R0 represents the calibrated reflectivity of the curved display screen; represents the illumination angle of the j-th light source on the i-th sub-area in the second illumination scene; represents the average brightness of the i-th sub-region; k1 and k2 represent the sensitivity coefficients of reflectivity to illumination angle and color brightness, and the values ​​of k1 and k2 are both within the interval (0,0.5];

[0077] A second global brightness compensation matrix is ​​obtained through the first brightness compensation matrix and the third brightness compensation matrix, and the second grayscale compensation matrix is ​​determined in combination with a grayscale mapping function.

[0078] In order to further illustrate the role of the first light brightness proposed in the present invention, the first light brightness of different sub-areas of a brand A computer curved screen under two light source illumination scenes is exemplarily given for comparison. Table 1 lists the first light brightness of different sub-areas.

[0079] Table 1. Brightness of different sub-areas of curved screen of brand A computer

[0080]

[0081] According to the data in Table 1, the illumination angle and illumination intensity of the sub-areas are strongly correlated, that is, the larger the illumination angle, the lower the illumination intensity tends to be. For example, the illumination angle of GY1 on No. 02 is 1°, and the illumination intensity is 99.78 lux; the illumination angle of GY1 on No. 01 is 75°, and the illumination intensity is 15.13 lux. This is because the larger the incident angle of light on the curved screen of brand A computer, the less light energy is received per unit area, thereby reducing the illumination intensity of the corresponding area. In addition, the illumination intensity of the sub-area has a more direct and significant impact on the first light brightness and average brightness of the corresponding area. The higher the illumination intensity and average brightness of the sub-area, the higher the corresponding first light brightness will usually be. For example, the illumination intensity of GY1 and GY2 on No. 03 is 90.03 lux and 72.15 lux, respectively, and the average brightness and first light brightness of the corresponding area are 217.32 nits and 76.19 nits, respectively. The illumination intensity of GY1 and GY2 on No. 01 is 15.13 lux and 121.40 lux, respectively, and the average brightness and first light brightness of the corresponding area are 120.45 nits and 32.77 nits, respectively. This is because when light is irradiated onto the curved screen of brand A computer, the incident angles of light in different areas of the curved screen surface are different, causing the light to concentrate in certain areas, thereby enhancing the illumination intensity. The higher the average brightness, the stronger the reflection of light in the corresponding area, which further has a certain impact on the light brightness of these areas.

[0082] Specifically, the second lighting scene is a daily lighting scene, and its ambient light intensity is generally 50-500 lux. In daily lighting scenes, since the ambient light already provides sufficient background brightness for users, the curved screen of brand A computer does not need too high a brightness output; if the brightness of the curved screen is too high, it will aggravate the light reflection phenomenon and reduce the clarity and contrast of the image. Therefore, by accurately calculating the lighting angle and light intensity of each sub-area, the impact of ambient light on the display brightness of the curved screen of brand A computer can be better evaluated to ensure that the screen maintains visual consistency under these conditions.

[0083] The embodiment of the present application can accurately reflect the brightness changes of each sub-area under specific lighting conditions by obtaining the first light brightness of the sub-area under the second lighting scene, thereby ensuring the accuracy of the compensation matrix. Combined with the third brightness compensation matrix and parameters such as reflectivity, it is possible to dynamically adjust the brightness of the curved display screen under different lighting angles and intensities, ensuring that the curved display screen maintains brightness and color consistency under different lighting conditions, improving the effect of brightness compensation in daily lighting scenes, thereby improving display uniformity and visual comfort.

[0084] Further, according to the illumination parameters in the third illumination scene, the second light brightness is obtained and the glare position is determined; the third grayscale compensation matrix is ​​obtained by the second light brightness at the glare position and the first brightness compensation matrix, corresponding to Figure 1 Step S106 of Figure 3 The specific process includes:

[0085] According to the size of the sub-area, the ideal brightness distribution is divided to obtain the ideal brightness distribution of the sub-area; the second light brightness of the sub-area is obtained by the lighting parameters under the third lighting scene and the ideal brightness distribution of the sub-area; if the brightness value of the pixel position of the sub-area is less than the second light brightness, the pixel position corresponding to the sub-area is the glare position; combined with the difference between the second light brightness of the glare position and the corresponding brightness value, a fourth brightness compensation matrix is ​​obtained, and the specific calculation formula is:

[0086]

[0087]

[0088] in, A fourth brightness compensation matrix representing the i-th sub-area, wherein the fourth brightness compensation matrix includes a fourth brightness compensation value at each pixel position of the curved display screen; represents the second light luminance of the i-th sub-area under the third lighting scene, and the second light luminance and the first light luminance are calculated using the same process; E irepresents the glare judgment matrix of the i-th sub-area, a value of 1 indicates that glare will occur, and a value of 0 indicates that glare will not occur; represents the brightness value of the ideal brightness distribution of the i-th sub-region at the position (h, w);

[0089] A third global brightness compensation matrix is ​​obtained through the first brightness compensation matrix and the fourth brightness compensation matrix, and the third grayscale compensation matrix is ​​determined in combination with a grayscale mapping function.

[0090] Specifically, the third lighting scene is a strong light scene, and its ambient light intensity is generally greater than 500 lux. In the strong light scene, due to the direct exposure of ambient light and excessive brightness, not only will glare be generated in some areas of the curved screen of brand A computer, but it will also cause the displayed content to be dim or difficult to see. In order for users to be able to see the screen content clearly, the brightness of the screen must be appropriately increased to ensure that the display effect can reduce the interference of ambient light. Therefore, by analyzing each sub-area of ​​the screen, calculating the location where the glare is generated according to the lighting parameters, and performing targeted brightness compensation based on the differences in brightness values ​​of these areas, the negative impact of glare on the visual experience can be effectively reduced.

[0091] According to the second light brightness in the third lighting scene, the embodiment of the present application can accurately identify the area on the curved display screen where glare is generated, and perform effective brightness compensation. The fourth brightness compensation matrix is ​​generated by combining the difference between the second light brightness at the glare position and the actual brightness, which can significantly reduce the impact of glare on the display effect; by integrating the first brightness compensation matrix and the fourth brightness compensation matrix, global brightness compensation is obtained, which further optimizes the brightness compensation effect of the display screen in strong light scenes, improves the display quality and improves the visual comfort of the user.

[0092] Furthermore, the brightness of the curved display screen under different lighting scenes is compensated according to different grayscale compensation matrices, and an adjusted image after brightness compensation is obtained; the display quality of the curved display screen is evaluated by combining the brightness uniformity index and the structural similarity index, corresponding to Figure 1 The specific implementation process includes:

[0093] The peak brightness and the adjusted image are input into the brightness mapping function to generate an adjusted brightness distribution; the ideal image and the adjusted brightness distribution are combined to obtain a reference brightness distribution; a brightness uniformity index is generated by comparing the maximum brightness value and the minimum brightness value of the reference brightness distribution; according to the structural similarity function, a structural similarity index of the ideal image and the adjusted image is obtained; the display quality index of the curved display screen is obtained by combining the brightness uniformity index and the structural similarity index; the calculation formula of the display quality index is:

[0094]

[0095] Wherein, DQI represents the display quality index; represents the reference brightness distribution of the j channel and j∈{r,g,b}; I represents the average brightness value of the reference brightness distribution of channel j; ideal and I adjust represent the ideal image and the adjusted image respectively; Max(), Min() and Avg() represent maximum value, minimum value and mean value calculation functions respectively; SSIM() represents the structural similarity function; γ1 and γ2 represent adjustment parameters, 0<γ2<γ1<1 and γ1+γ2=1; Represents the brightness value of the reference brightness distribution of the red channel at (u, v); and Respectively represent the reference brightness distribution of green and blue channels; Indicates the adjusted brightness distribution; and Respectively represent the red, green and blue channels of the ideal image; ∈ gr Represents the ratio of green peak brightness to red peak brightness; ∈ br It represents the ratio of the peak brightness of blue to the peak brightness of red;

[0096] If the display quality index is greater than or equal to a predetermined quality threshold, brightness compensation is stopped; otherwise, brightness compensation is performed again according to the adjusted image and the corresponding illumination parameters.

[0097] In order to further illustrate the role of the display quality index proposed in the present invention, the display quality index of the curved screen of brand A computer after brightness compensation is given as an example for comparison. Refer to Table 2 for a list of display quality indexes in different lighting scenes.

[0098] Table 2. Display quality indicators of brand A computer curved screen after brightness compensation in different lighting scenes

[0099]

[0100] In the embodiments of the present application, different adjustment parameters are set for different lighting scenes; in the first lighting scene, i.e., a dim scene, there is less external light, and the brightness of the screen itself plays a major role in the user's visual experience; therefore, the curved screen of brand A computer needs to maintain the detail clarity and contrast of the image, i.e., the adjustment parameters of structural similarity account for a higher proportion; and in the third lighting scene, i.e., a strong light environment, the external light is strong, and the reflection of the screen and the interference of light will affect the clarity and visibility of the image; therefore, it becomes particularly important to maintain the brightness uniformity of the image, and uneven lighting will cause some parts of the image to be too dark or too bright, affecting the viewing experience.

[0101] The embodiment of the present application obtains the system brightness compensation parameters β1, β2 of the curved screen of brand A computer at different camera positions through the above brightness compensation method, and obtains the corresponding mapping curve through nonlinear regression function fitting. In practical applications, by setting the relative position of the user and the center of the curved screen of brand A computer, the distance between the user and different sub-areas is calculated, thereby obtaining the first brightness compensation value of the curved display screen in the absence of light; further, according to the ambient light parameters obtained by the photoelectric sensor, the automatic brightness adjustment of the curved screen of brand A computer in different lighting scenes is realized.

[0102] The embodiment of the present application combines the brightness uniformity index and the structural similarity index to evaluate the display quality after brightness compensation, which can achieve precise adjustment of the display effect. The brightness uniformity index ensures that the brightness distribution of the display screen is more uniform after compensation, and the structural similarity index ensures the visual consistency between the adjusted image and the ideal image; according to the display quality index, it ensures that the brightness compensation is stopped after reaching the predetermined quality threshold, effectively improving the brightness consistency and image quality of the display screen under variable lighting conditions, and optimizing the user's visual experience.

[0103] The embodiments of the present application achieve brightness optimization of curved display screens in different environments through brightness compensation and display quality evaluation. The specific implementation process mainly includes the following steps: (1) regional brightness analysis of the curved display screen in a non-illuminated environment; (2) adopting different grayscale compensation strategies for different lighting scenes; (3) comprehensive evaluation of the display results after brightness compensation. The present invention proposes system brightness compensation, light brightness compensation and display quality evaluation for the above three processes respectively; the system brightness compensation achieves effective improvement on the brightness unevenness problem caused by the physical bending of the display screen, and improves the accuracy of brightness compensation; the light brightness compensation improves the adaptability of the display screen under various lighting conditions, and further improves the effect of brightness compensation; the display quality evaluation improves the image uniformity and visual effect after brightness compensation, ensuring that users get the best visual experience.

[0104] Embodiment 2

[0105] In the first embodiment, the method of the present invention realizes the brightness compensation of the curved screen of the computer of brand A. In the embodiment of the present application, a display screen brightness compensation device proposed by the present invention will be described to realize the brightness compensation of the curved screen of the TV of brand B; Figure 4 , the display screen brightness compensation device comprises:

[0106] The data acquisition module divides the curved display screen into a number of sub-areas of the same size and obtains basic parameters of each of the sub-areas; sets different lighting scenes to obtain ideal images, actual images and lighting parameters of the sub-areas;

[0107] The system brightness compensation module obtains the ideal brightness distribution and the actual brightness distribution in a no-light environment through a brightness mapping function; performs regional brightness analysis on the curved display screen in combination with the basic parameters to obtain a first brightness compensation matrix;

[0108] A lighting environment assessment module, which divides the lighting scene according to the lighting parameters to obtain a first lighting scene, a second lighting scene and a third lighting scene;

[0109] The illumination scene brightness compensation module obtains the brightness compensation distribution under the first illumination scene by combining the first brightness compensation matrix and the ideal brightness distribution; adjusts the brightness compensation distribution according to a predetermined comfortable brightness range to obtain a first grayscale compensation matrix; obtains the average brightness of the sub-area under the second illumination scene, obtains the first light brightness and determines the second grayscale compensation matrix by combining the illumination parameters; obtains the second light brightness and determines the glare position according to the illumination parameters under the third illumination scene; obtains the third grayscale compensation matrix by the second light brightness at the glare position and the first brightness compensation matrix;

[0110] The brightness compensation evaluation module performs brightness compensation on the curved display screen under different lighting scenes according to different grayscale compensation matrices, and obtains an adjusted image after brightness compensation; and evaluates the display quality of the curved display screen by combining the brightness uniformity index and the structural similarity index.

[0111] Specifically, the curved screen of brand B TV is usually used in various scenarios such as home, commercial display and conference, and the lighting conditions in different scenarios vary greatly. For example, when a user uses the curved screen of brand B TV to watch a movie at home, the lighting conditions of the home environment may change constantly due to the opening and closing of curtains, the brightness of the room lights and the change of day and night; under daily lighting, the device will increase the brightness of the screen to offset the influence of sunlight and keep the image clear and visible; at night, the device will reduce the brightness of the curved screen to avoid the screen being too glaring and provide a comfortable viewing experience; when the curved screen of brand B TV is used for commercial display, the lighting conditions will vary due to the lighting arrangement of the mall, customer flow and changes in external natural light; during peak hours, the lights inside the mall may be very bright, and the device will increase the screen brightness to ensure that the display content is still clearly visible under bright lights, ensure the effective communication of advertising and product information, and enhance the customer's visual experience and the effect of commercial display. Therefore, the display brightness compensation device automatically adjusts the brightness, so that the TV can provide stable display quality under various complex lighting conditions without the need for manual adjustment by the user, thereby improving the overall comfort and visual enjoyment of use.

[0112] The embodiment of the present application realizes accurate brightness compensation for curved display screens under different lighting conditions through the collaborative work of data acquisition module, system brightness compensation module, lighting environment assessment module, lighting scene brightness compensation module and brightness compensation assessment module. The data acquisition module obtains basic parameters and lighting data by dividing sub-areas, providing accurate input for subsequent compensation; the system brightness compensation module generates a compensation matrix through a brightness mapping function, effectively solving the problem of uneven brightness caused by physical bending; the lighting environment assessment module accurately divides different lighting scenes, making the compensation strategy more flexible; the lighting scene brightness compensation module adjusts the brightness for each lighting scene, improving the visual comfort of users in dim environments and effectively reducing the glare problem caused by strong light and reflection; the brightness compensation assessment module ensures that the display effect after compensation reaches the best level through the brightness uniformity index and structural similarity index.

[0113] Embodiment 3

[0114] In order to implement the above-mentioned embodiments, an electronic device proposed by the present invention will be described in the embodiments of the present application; Figure 5 , the electronic device comprises:

[0115] At least one processor, a memory, and a display screen brightness compensation program stored in the memory and executable on at least one processor, wherein the processor implements the display screen brightness compensation program when executing the display screen brightness compensation program. Figure 1 The display screen brightness compensation method described in steps S101-S107; wherein the processor is connected to the photoelectric sensor and the image source, and is used to receive the lighting parameters and image data transmitted by the photoelectric sensor and the image source, and store them in the memory; the memory also stores the adjustment parameters of the display screen brightness compensation program and the calibration parameters of the curved display screen, and the calibration parameters of the curved display screen include the curvature radius, arc length, pixel density and peak brightness.

[0116] Specifically, the processor obtains the lighting parameters and ideal image in the current lighting scene through the photoelectric sensor and the image source, and reads the adjustment parameters of the display brightness compensation program and the basic parameters of each sub-area of ​​the curved display screen from the memory; then, the processor executes according to the stored adjustment parameters Figure 1 The program described in step S101 calculates the system brightness compensation matrix and stores it in the memory; then, the processor calculates the overall light intensity based on the light parameters to obtain the current light scene, and executes according to the corresponding scene Figure 1Different grayscale compensation strategies described in steps S104-S106; finally, the processor performs brightness compensation according to the grayscale compensation value, receives the adjusted image after brightness compensation, and calculates the display quality index in combination with the brightness uniformity index and the structural similarity index; if the display quality meets the standard, the compensation is stopped, otherwise the processor performs brightness compensation again according to the adjusted image and lighting parameters.

[0117] The embodiment of the present application can quickly process a large amount of data, such as images, sensor parameters, and system parameters, through electronic devices, and perform complex calculations to achieve automatic brightness adjustment of curved display screens. In addition, the programmability of electronic devices enables them to flexibly respond to different application requirements, and implement different compensation strategies for different lighting scenes by adjusting the operating logic; at the same time, the high degree of integration of modern electronic technology allows electronic devices to integrate more complex functions on the basis of miniaturization, improve the efficiency of curved screen brightness compensation, ensure high-quality display effects, and optimize user experience.

[0118] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A display screen brightness compensation method, characterized in that: include: Divide the curved display screen into a number of sub-areas of equal size, and obtain basic parameters of each of the sub-areas; Setting different lighting scenes to obtain ideal images, actual images and lighting parameters of the sub-areas; Obtaining an ideal brightness distribution and an actual brightness distribution in a no-light environment through a brightness mapping function; performing brightness analysis on different areas of the curved display screen in combination with the basic parameters to obtain a first brightness compensation matrix; Dividing the illumination scene according to the illumination parameter to obtain a first illumination scene, a second illumination scene and a third illumination scene; Combining the first brightness compensation matrix and the ideal brightness distribution, obtaining a brightness compensation distribution under the first lighting scene; Adjust the brightness compensation distribution according to a predetermined comfortable brightness range to obtain a first grayscale compensation matrix; Obtaining an average brightness of the sub-area under the second illumination scene, combining the illumination parameters, obtaining the first light brightness and determining a second grayscale compensation matrix; According to the illumination parameters in the third illumination scene, obtaining the second light brightness and determining the glare position; Obtaining a third grayscale compensation matrix through the second light luminance at the glare position and the first brightness compensation matrix; Performing brightness compensation on the curved display screen under different lighting scenes according to different grayscale compensation matrices, and acquiring an adjusted image after brightness compensation; The display quality of the curved display screen is evaluated by combining the brightness uniformity index and the structural similarity index.

2. A display screen brightness compensation method according to claim 1, characterized in that: The actual image corresponds to a display image of the curved display screen taken by the HDR camera in the dark environment; the basic parameters of each sub-area include a curvature radius, an arc length, a pixel density, and a peak brightness; the curvature radius is calculated by the arc length and the chord height of the sub-area; the peak brightness is measured by a photometer on the curved display screen of different pure color images in the dark environment, including red peak brightness, green peak brightness, and blue peak brightness; The illumination parameters include illumination intensity and illumination angle.

3. A display screen brightness compensation method according to claim 1, characterized in that: The process of obtaining the ideal brightness distribution and the actual brightness distribution, and performing brightness analysis on different areas of the curved display screen in combination with the basic parameters includes: According to the basic parameters, the curvature radius, arc length, pixel density and peak brightness are obtained; the ideal image and the peak brightness are input into the brightness mapping function to obtain the ideal brightness distribution; the actual image and the peak brightness are input into the brightness mapping function to obtain the actual brightness distribution; according to the distribution of the sub-area, the ideal brightness distribution of the sub-area and the actual brightness distribution of the sub-area are obtained; the distances from the left and right edges of the sub-area to the camera lens and the angles between the camera lens and the left and right edges of the sub-area are obtained, and the first brightness compensation matrix of the sub-area is generated in combination with the curvature radius, the arc length and the pixel density of the sub-area.

4. A display screen brightness compensation method according to claim 1, characterized in that: The implementation process of dividing the lighting scene according to the lighting parameters includes: According to the illumination parameters of the sub-area, the illumination intensity corresponding to the sub-area is obtained; the overall illumination intensity of the curved display screen is obtained by combining the illumination intensities of all the sub-areas; if the overall illumination intensity is less than a first predetermined light intensity threshold, the illumination scene is the first illumination scene; if the overall illumination intensity is greater than or equal to the first predetermined light intensity threshold and the overall illumination intensity is less than the second predetermined light intensity threshold, the illumination scene is the second illumination scene; if the overall illumination intensity is greater than or equal to the second predetermined light intensity threshold, the illumination scene is the third illumination scene.

5. A display screen brightness compensation method according to claim 1, characterized in that: The process of obtaining the brightness compensation distribution and adjusting the brightness compensation distribution according to the predetermined comfortable brightness range includes: The brightness compensation distribution is obtained by combining the first brightness compensation matrix and the ideal brightness distribution; the brightness compensation distribution is overall scaled according to the predetermined comfortable brightness range to generate a second brightness compensation matrix; the first brightness compensation matrix and the second brightness compensation matrix are combined to obtain a first global brightness compensation matrix; and the first global brightness compensation matrix is ​​mapped to the first grayscale compensation matrix through a grayscale mapping function.

6. A display screen brightness compensation method according to claim 1, characterized in that: The process of acquiring the average brightness of the sub-area under the second illumination scene, combining the illumination parameters, obtaining the first light brightness and determining the second grayscale compensation matrix includes: According to the illumination parameters, the illumination angle and illumination intensity of the sub-areas are respectively obtained; according to the distribution of the sub-areas, the ideal brightness distribution is divided and the mean is calculated to obtain the average brightness of each sub-area; the first light brightness of each sub-area is generated by combining the illumination angle, the illumination intensity and the average brightness, and converted into a third brightness compensation matrix through an all-one matrix; the second global brightness compensation matrix is ​​obtained through the first brightness compensation matrix and the third brightness compensation matrix, and the second grayscale compensation matrix is ​​determined in combination with the grayscale mapping function.

7. A display screen brightness compensation method according to claim 1, characterized in that: According to the illumination parameters in the third illumination scene, acquiring the second light brightness and determining the glare position; The implementation process of obtaining the third grayscale compensation matrix by using the second light luminance at the glare position and the first brightness compensation matrix includes: According to the size of the sub-area, the ideal brightness distribution is divided to obtain the ideal brightness distribution of the sub-area; the second light brightness of the sub-area is obtained through the lighting parameters under the third lighting scene and the ideal brightness distribution of the sub-area; if the brightness value of the pixel position of the sub-area is less than the second light brightness, the pixel position corresponding to the sub-area is the glare position; combining the difference between the second light brightness and the corresponding brightness value of the glare position, a fourth brightness compensation matrix is ​​obtained; through the first brightness compensation matrix and the fourth brightness compensation matrix, a third global brightness compensation matrix is ​​obtained, and the third grayscale compensation matrix is ​​determined in combination with the grayscale mapping function.

8. A display screen brightness compensation method according to claim 1, characterized in that: The specific implementation process of evaluating the display quality of the curved display screen by combining the brightness uniformity index and the structural similarity index includes: According to the adjusted image and the brightness mapping function, an adjusted brightness distribution is obtained; in combination with the ideal image and the adjusted brightness distribution, a reference brightness distribution is obtained; by comparing the maximum brightness value and the minimum brightness value of the reference brightness distribution, the brightness uniformity index is generated; according to the structural similarity function, the structural similarity index is obtained; in combination with the brightness uniformity index and the structural similarity index, a display quality index of the curved display screen is obtained; If the display quality index is greater than or equal to a predetermined quality threshold, brightness compensation is stopped; otherwise, brightness compensation is performed again according to the adjusted image and the corresponding illumination parameters.

9. A display screen brightness compensation device, characterized in that: include: A data acquisition module divides the curved display screen into a number of sub-areas of equal size and obtains basic parameters of each of the sub-areas; Setting different lighting scenes to obtain ideal images, actual images and lighting parameters of the sub-areas; The system brightness compensation module obtains the ideal brightness distribution and the actual brightness distribution in a no-light environment through a brightness mapping function; performs regional brightness analysis on the curved display screen in combination with the basic parameters to obtain a first brightness compensation matrix; A lighting environment assessment module, which divides the lighting scene according to the lighting parameters to obtain a first lighting scene, a second lighting scene and a third lighting scene; The illumination scene brightness compensation module combines the first brightness compensation matrix and the ideal brightness distribution to obtain the brightness compensation distribution under the first illumination scene; adjusts the brightness compensation distribution according to a predetermined comfortable brightness range to obtain a first grayscale compensation matrix; obtains the average brightness of the sub-area under the second illumination scene, combines the illumination parameters to obtain the first light brightness and determines the second grayscale compensation matrix; obtains the second light brightness and determines the glare position according to the illumination parameters under the third illumination scene; Obtaining a third grayscale compensation matrix through the second light luminance at the glare position and the first brightness compensation matrix; A brightness compensation evaluation module performs brightness compensation on the curved display screen under different lighting scenes according to different grayscale compensation matrices, and obtains an adjusted image after brightness compensation; The display quality of the curved display screen is evaluated by combining the brightness uniformity index and the structural similarity index.

10. An electronic device, comprising a memory and a processor, wherein the memory stores a display brightness compensation program that can be run on the processor, characterized in that: When the processor executes the display screen brightness compensation program, the display screen brightness compensation method according to any one of claims 1 to 8 is implemented.

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