Display difference correction method and apparatus, and display apparatus, device and medium

Abstract

Provided are a display difference correction method and apparatus for a display screen, and a display apparatus. The display difference correction method comprises: on the basis of a display screen, determining a spatial point set for viewing the display screen (S100); collecting image information of viewing, at a small point, a preset picture displayed on the display screen (S200); on the basis of the difference between chrominance information of the preset picture collected at the small point and a preset target chrominance value of the corresponding preset picture, performing color deviation gradient partitioning (S300); on the basis of color deviation gradients, determining correction parameters of a plurality of display units in the corresponding preset picture (S400); and on the basis of the corresponding correction parameters, correcting the plurality of display units (S500).

Description

Display difference correction method and device, display device, equipment and medium CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese patent application No. 202311660667.X filed on December 5, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of display technology, and more particularly to a method and device for correcting display differences of a display screen, a display device, an electronic device, and a storage medium. Background Art

[0003] With the development of display technology, the application of real-world scenarios has become more and more extensive. In recent years, the application of naked-eye 3D and immersive displays has also increased. In particular, the display effects of immersive displays are particularly sought after by the exhibition industry because the sensory experience they bring is extremely realistic. Such immersive displays are generally multi-sided displays with multiple display sub-screens, or usually multi-sided displays such as tri-fold or 5-fold screens. Summary of the Invention

[0004] The embodiments of the present disclosure provide a method and device for correcting display differences of a display screen, as well as a display device, to address the problem of deteriorating image quality of a display sub-screen viewed at an angle when a viewer views an immersive display screen, particularly the problem of significant color shift of a display sub-screen viewed at an angle, and the problem of even greater color shift of multiple display sub-screens when a user views the immersive display screen at different bystander points, i.e., different bystander viewing positions.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for correcting display differences of a display screen is provided, comprising: determining a set of spatial points for viewing the display screen based on the display screen, the set of spatial points including at least one small point; collecting image information of a preset picture displayed on the display screen at the small point, the image information including at least chromaticity information of a plurality of display units of the display screen; performing color deviation gradient division based on the difference between the chromaticity information of the preset picture collected at the small point and a preset target chromaticity value of the corresponding preset picture, so that in the preset picture corresponding to the small point, the plurality of display units having the same preset color deviation step are in the same gradient; determining correction parameters of the plurality of display units in the corresponding preset picture based on the color deviation gradient, so that in the corresponding preset picture, the plurality of display units in the same gradient have the same correction parameters, and the plurality of display units in different gradients have different correction parameters; and correcting the plurality of display units according to the corresponding correction parameters.

[0006] In some embodiments, the display screen includes at least two display sub-screens, and different display sub-screens have different display directions.

[0007] In some embodiments, the spatial point set includes a plurality of small points, each of which corresponds to one of the color deviation gradients and a set of the correction parameters.

[0008] In some embodiments, the preset target chromaticity values ​​of the preset image corresponding to the plurality of small dots are the same.

[0009] In some embodiments, the method for performing the color deviation gradient division includes: dividing different color deviation gradients according to the formula Δd=N*ΔE, wherein Δd represents the degree of color deviation of the display unit relative to the preset target chromaticity value, ΔE represents the preset color deviation step, and N represents the number of color deviation gradients, where N is an integer.

[0010] In some embodiments, the Δd is calculated by the following formula:

[0011]

[0012] Wherein, x0 and y0 represent the preset target chromaticity values ​​of the preset picture, and x1 and y1 represent the chromaticity values ​​of the display unit of the preset picture.

[0013] In some embodiments, determining the correction parameters of the plurality of display units in the corresponding preset screen according to the color deviation gradient includes: calculating the chromaticity average value of the plurality of display units in the same gradient; determining the display unit closest to the chromaticity average value; and correcting the chromaticity of the display unit closest to the chromaticity average value according to the preset target chromaticity value to obtain the correction parameters, wherein the correction parameters of the display unit closest to the chromaticity average value are used as the correction parameters of the plurality of display units in the gradient in which it is located.

[0014] In some embodiments, the spatial point set includes multiple small points, and the display difference correction method of the display screen also includes: determining at least one of the small points as a reference point, and dividing the multiple small points other than the reference point into different viewing levels according to the difference between the image information corresponding to the small points other than the reference point and the image information corresponding to the reference point, so as to establish viewing level data.

[0015] In some implementations, a plurality of the small points are determined to be the reference points, wherein different reference points correspond to different viewing level data.

[0016] In some embodiments, the plurality of small points are divided into different viewing levels according to the following formula:

[0017]

[0018] Wherein, ΔP represents the percentage of the display difference between the corresponding other small points and the reference point, m represents the total number of the display units involved in the calculation of ΔP, and x ai 、y ai represents the color coordinate of the i-th display unit collected at the reference point, x bi 、y bi It represents the color coordinate of the i-th display unit collected at any point other than the reference point, where i is less than or equal to m.

[0019] In some embodiments, the display unit is a sub-pixel that displays the preset image.

[0020] According to a second aspect of the embodiments of the present disclosure, a display difference correction device for a display screen is provided, comprising: a spatial point set confirmation module configured to determine a spatial point set for viewing the display screen based on the display screen, the spatial point set including at least one small point; an image information acquisition module configured to acquire image information of a preset screen displayed on the display screen at the small point, the image information including at least chromaticity information of multiple display units of the display screen; a color shift gradient division module configured to perform color shift gradient division based on a difference between the chromaticity information of the preset screen acquired at the small point and a preset target chromaticity value of the corresponding preset screen, so that, in the preset screen corresponding to the small point, multiple display units having the same preset color shift step size are within the same gradient; a correction parameter determination module configured to determine correction parameters for multiple display units in the corresponding preset screen based on the color shift gradient, so that, in the corresponding preset screen, multiple display units in the same gradient have the same correction parameters, and multiple display units in different gradients have different correction parameters; and a screen correction module configured to correct the multiple display units according to the corresponding correction parameters.

[0021] According to a third aspect of the embodiments of the present disclosure, a display device is provided. The display device includes a display screen, and the display screen is calibrated using the display difference correction method of the display screen provided in the first aspect.

[0022] According to a fourth aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: a processor; and a memory configured to store instructions executable by the processor; wherein the processor is configured to implement the display difference correction method for a display screen provided in the first aspect above when executing the instructions.

[0023] According to a fifth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the display difference correction method for the display screen provided in the first aspect is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a schematic structural diagram of an immersive display screen according to some embodiments of the present disclosure;

[0025] FIG2 is a flow chart of a display difference correction method according to some embodiments of the present disclosure;

[0026] FIG3 is a schematic diagram of a display screen and a spatial point set according to some embodiments of the present disclosure;

[0027] FIG4 is a schematic diagram of a color shift gradient according to some embodiments of the present disclosure;

[0028] FIG5 is a schematic diagram of the process steps for determining calibration parameters according to some embodiments of the present disclosure;

[0029] FIG6 is a flow chart of a display difference correction method according to other embodiments of the present disclosure;

[0030] FIG7 is a schematic structural diagram of a display difference correction device according to some embodiments of the present disclosure;

[0031] FIG8 is a schematic diagram of the structure of a correction parameter determination module according to some embodiments of the present disclosure;

[0032] FIG9 is a schematic structural diagram of a display difference correction device according to other embodiments of the present disclosure;

[0033] FIG10 is a schematic structural diagram of a display device according to some embodiments of the present disclosure;

[0034] FIG11 is a schematic structural diagram of a display device according to other embodiments of the present disclosure; and

[0035] FIG12 is a schematic structural diagram of an electronic device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0036] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0037] In this article, relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements not only include those elements, but also include other elements not clearly listed, or also include elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprising one..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "more than two" includes two or more than two situations. "*" represents a multiplication symbol.

[0038] FIG1 is a schematic diagram of the structure of an immersive display screen according to some embodiments of the present disclosure. In FIG1 , the display screen 10 includes five display sub-screens, namely a first display sub-screen 11, a second display sub-screen 12, a third display sub-screen 13, a fourth display sub-screen 14, and a fifth display sub-screen 15. The five display sub-screens are connected in pairs to form a cavity, and the display surfaces of the five display sub-screens all face the interior of the cavity. A viewer can view the immersive display screen at multiple small points 21. At least one of the multiple small points 21 is a spatial point at which the display screen is viewed directly. Such a small point is set as a normal viewing point. However, even when the viewer views the display screen at the normal viewing point, they can only look directly at the first display sub-screen 11, while the other four display sub-screens can only be viewed at a wide angle. At this time, the image information of the other four display sub-screens is very different from that of the first display sub-screen 11, especially the color information has a large color deviation. In addition, when the viewer views the display screen at a small point other than the direct viewing point, such as when viewing from a bystander's perspective, the viewer can only view the five sub-screens at the side. At this time, a greater color shift occurs than when viewing the display screen directly.

[0039] In view of this, the present disclosure provides a display difference correction method for a display screen, a display difference correction device for a display screen, and a display device, which can solve the problem of deterioration in image quality of a display sub-screen when viewed at an angle, especially the problem that the color of the display sub-screen when viewed at an angle will shift significantly; and can solve the problem that the color shift of multiple display sub-screens will be even greater when users watch an immersive display screen at different bystander points (different bystander viewing positions).

[0040] Some embodiments of the present disclosure provide a method for correcting display differences of a display screen, comprising: determining a set of spatial points for viewing the display screen based on the display screen, the spatial point set including at least one small point; collecting image information of a preset picture displayed on the display screen viewed at the small point, the image information including at least chromaticity information of multiple display units of the display screen; performing color deviation gradient division based on the difference between the chromaticity information of the preset picture collected at the small point and a preset target chromaticity value of the corresponding preset picture, so that in the preset picture corresponding to the small point, multiple display units with the same preset color deviation step are in the same gradient; determining correction parameters of the multiple display units in the corresponding preset picture based on the color deviation gradient, so that in the corresponding preset picture, multiple display units in the same gradient have the same correction parameters, and multiple display units in different gradients have different correction parameters; and correcting the multiple display units according to the corresponding correction parameters.

[0041] Some embodiments of the present disclosure provide a display discrepancy correction device for a display screen that can execute the aforementioned display discrepancy correction method for a display screen. The display discrepancy correction device for a display screen includes: a spatial point set confirmation module configured to determine a spatial point set for viewing the display screen based on the display screen, the spatial point set including at least one small point; an image information acquisition module configured to acquire image information of a preset screen displayed on the display screen at the small point, the image information including at least chromaticity information of multiple display units of the display screen; a color deviation gradient division module configured to perform color deviation gradient division based on the difference between the chromaticity information of the preset screen acquired at the small point and a preset target chromaticity value of the corresponding preset screen, so that in the preset screen corresponding to the small point, multiple display units with the same preset color deviation step size are within the same gradient; a correction parameter determination module configured to determine correction parameters for multiple display units in the corresponding preset screen based on the color deviation gradient, so that in the corresponding preset screen, multiple display units in the same gradient have the same correction parameters, and multiple display units in different gradients have different correction parameters; and a screen correction module configured to correct the multiple display units according to the corresponding correction parameters.

[0042] Some embodiments of the present disclosure provide a display device, which is calibrated using the display difference correction method for a display screen provided by the above embodiments, or calibrated using the display difference correction device for a display screen provided by the above embodiments.

[0043] Some embodiments of the present disclosure provide an electronic device, comprising: a processor; and a memory configured to store instructions executable by the processor; wherein the processor is configured to implement the display difference correction method for the display screen provided in the above embodiment when executing the instructions.

[0044] Some embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the display difference correction method provided in the above embodiments is implemented.

[0045] The following is a detailed description of different embodiments. The division of different embodiments is to better illustrate the inventive spirit of the present disclosure. The implementation features in different embodiments can be combined with each other.

[0046] FIG2 is a flow chart of a display difference correction method according to some embodiments of the present disclosure. Referring to FIG2 , some embodiments of the present disclosure provide a display difference correction method for a display screen, comprising steps S100 , S200 , S300 , S400 , and S500 .

[0047] In step S100, a spatial point set for viewing the display screen is determined according to the display screen, where the spatial point set includes at least one small point.

[0048] Figure 3 is a schematic diagram of a display screen and a set of spatial points according to some embodiments of the present disclosure. Referring to Figure 3, in some embodiments, the display screen 10 includes at least two display sub-screens, and different display sub-screens have different display directions, but the same viewer can watch multiple display sub-screens or all display sub-screens at the same time at a small point.

[0049] In one example, FIG3 illustrates an immersive display screen 10, which includes five display sub-screens, namely a first display sub-screen 11, a second display sub-screen 12, a third display sub-screen 13, a fourth display sub-screen 14, and a fifth display sub-screen 15. The five display sub-screens are connected in pairs to form a cavity, and the display surfaces of the five display sub-screens are all facing the inside of the cavity. The five display sub-screens in FIG3 can be located in the front, bottom, left, right, and top directions of the viewer, respectively. In other embodiments, the display screen 10 can also include three or four display sub-screens, for example, the display screen 10 does not include the fifth display sub-screen 15, or the display screen 10 does not include the fourth display sub-screen 14 and the fifth display sub-screen 15.

[0050] In one example, FIG3 also illustrates a spatial point set 20 for viewing the display screen 10. The spatial point set 20 includes at least one small point 21, which is the observation position of the human eye when the viewer views the display screen 20.

[0051] Specifically, the positions and number of the small points in the spatial point set 20 are divided according to the size, shape, and orientation of the display screen.

[0052] In one example, FIG3 illustrates that with the display screen 10 as a reference object, there can be multiple small points for viewing the display screen 10. In the spatial rectangular coordinate system (the coordinate system composed of the first direction X, the second direction Y, and the third direction Z in FIG2 ), the multiple small points form a spatial point set 20.

[0053] In some embodiments, different small points can be divided according to a preset point step length, and the preset point step length ranges from 1 to 5 centimeters. For example, the preferred point step length is 2 centimeters. For example, the distance between two adjacent small points 21 in any direction of the first direction X, the second direction Y, and the third direction Z is 2 centimeters.

[0054] It should be noted that the display difference correction method of the display screen disclosed in the present invention has particularly excellent effects in immersive display devices, but the display difference correction method of the display screen disclosed in the present invention is also applicable to non-immersive display devices.

[0055] In step S200, image information of a preset picture displayed on a display screen viewed at a small point is collected, and the image information at least includes chromaticity information of a plurality of display units of the display screen.

[0056] In one example, the acquisition device can be set at a corresponding small point to take a photo of the display screen and other operations to collect image information. The image information includes chromaticity information of multiple display units, and the chromaticity information is color information such as color coordinates and / or tristimulus values.

[0057] In one example, image information of a plurality of display sub-screens displaying a preset screen in a display screen is collected, and the image information includes chromaticity information of a plurality of display units of the plurality of display sub-screens.

[0058] In some embodiments, the display unit is a sub-pixel that displays a preset image.

[0059] In one example, the immersive display device may be an LED display (light-emitting diode display), and the display unit may be an LED lamp of the LED display. For example, the display unit may be a red LED lamp bead, a green LED lamp bead, and a blue LED lamp bead. For example, the display unit may be a red light-emitting chip, a green light-emitting chip, and a blue light-emitting chip within a single LED lamp bead. The immersive display device may also be another type of display, such as a thin film transistor liquid crystal display (TFT-LCD).

[0060] Optionally, the preset picture includes at least one of a red picture, a green picture, a blue picture and a white picture.

[0061] In one example, image information of multiple display units of a display screen in a preset picture is collected, and then the multiple display units can be calibrated to obtain desired image information such as chromaticity of the calibrated display units.

[0062] In one example, by setting the preset images to include at least three primary color images (red image, green image, and blue image), image information such as chromaticity of various images displayed on the display screen can be corrected and improved.

[0063] In step S300, color deviation gradient division is performed based on the difference between the chromaticity information of the preset picture collected at the small dot and the preset target chromaticity value of the corresponding preset picture, so that in the preset picture corresponding to the small dot, multiple display units with the same preset color deviation step are in the same gradient.

[0064] In one example, each preset screen has a target chromaticity value. The target chromaticity value can be color information such as the standard color coordinates set for the display screen. The target chromaticity value can also be color information such as the color coordinates of a display sub-screen (for example, the first display sub-screen 11 in Figure 3) that the viewer is viewing directly at the normal viewing point.

[0065] In one example, the target chromaticity value of the preset picture is (x0, y0). When the preset picture includes a red picture, a green picture, and a blue picture, the red picture, the green picture, and the blue picture each include a target chromaticity value. For example, the red picture includes (x R0 、y R0 ) color coordinates, the green screen includes (x G0 、y G0 ) color coordinates, the blue screen includes (x B0 、y B0 )’s color coordinates.

[0066] In one example, in a preset image, multiple display units have different color deviations from a target chromaticity value, and the color deviation step size refers to a unit color deviation degree that divides different color deviations into different levels according to their degree.

[0067] In one example, color deviation gradient division is performed, that is, multiple display units are divided into different levels according to different color deviation degrees, so that multiple display units with the same preset color deviation level are in the same gradient, and display units with different color deviation levels are in different gradients.

[0068] In step S400, correction parameters of the plurality of display units in the corresponding preset picture are determined according to the color shift gradient, so that in the corresponding preset picture, the plurality of display units in the same gradient have the same correction parameters, and the plurality of display units in different gradients have different correction parameters.

[0069] In one example, after each display unit of the display screen is divided into different gradients, the display units within the gradient are calibrated according to the different gradients.

[0070] In step S500 , a plurality of display units are calibrated according to corresponding calibration parameters.

[0071] In one example, the correction parameters obtained in step S400 are used to drive the corresponding display units. At a corresponding small point, the display units in the same gradient are driven using the same set of correction parameters, and the display units in different gradients are driven using different sets of correction parameters, so that each display unit of the display screen can display the desired chromaticity, or each display sub-screen can display the desired chromaticity.

[0072] Some embodiments of the present disclosure provide a display discrepancy correction method for a display screen that corrects the chromaticity values ​​of multiple display units in the display screen, thereby improving the color shift of each display sub-screen when viewed by a viewer and ensuring consistent chromaticity across each display sub-screen when viewed at a small location. At the same time, a color shift gradient is divided within a preset image, and multiple display units within the same gradient have the same correction parameters. This eliminates the need to perform separate chromaticity correction on each display unit within the same gradient; instead, only one chromaticity correction is required within the same gradient. This reduces the complexity and amount of correction data required for display discrepancy correction, improves the speed and efficiency of display discrepancy correction, and facilitates the rapid storage and recall of correction parameters during display. Furthermore, after correcting image information viewed at multiple small locations, each of the multiple small locations corresponds to a set of correction parameters. By using image recognition technology to identify the position of the human eye, the correction parameters corresponding to the small location at or near the human eye position are retrieved, allowing the display screen to display the preset target chromaticity values, thereby improving the color shift of multiple display sub-screens when the user views the immersive display screen from different locations.

[0073] In some embodiments, the spatial point set includes a plurality of small points, each of which corresponds to a color deviation gradient and a set of correction parameters.

[0074] In one example, in step S300 , the plurality of small dots are divided into color deviation gradients; in step S400 , correction parameters corresponding to different groups of the plurality of small dots are obtained.

[0075] In one example, after correcting the image information of a display screen viewed at multiple small points, each of the multiple small points corresponds to a set of correction parameters. Image recognition technology is used to identify the position of the human eye, and a set of correction parameters corresponding to small points that are the same or close to the position of the human eye are called. The display screen can display the preset target chromaticity value, thereby improving the color deviation of multiple display sub-screens when users view the immersive display screen at different positions.

[0076] In some embodiments, the preset target chromaticity values ​​of the preset images corresponding to the plurality of small dots are the same.

[0077] In one example, setting the same preset target chromaticity value at different small dot positions allows viewers at different positions to view images with consistent color information.

[0078] In one example, the preset target chromaticity values ​​of the preset images corresponding to the plurality of small dots may be different. For example, at each small dot, the chromaticity value of the first display sub-screen 11 is selected as the preset target chromaticity value.

[0079] In some embodiments, the method for dividing color deviation gradients includes: dividing different color deviation gradients according to the formula Δd=N*ΔE, where Δd represents the degree of color deviation of the display unit relative to a preset target chromaticity value, ΔE represents the preset color deviation step size, and N represents the number of color deviation gradients, where N is an integer.

[0080] In some embodiments, Δd is calculated by the following formula:

[0081]

[0082] Wherein, x0 and y0 represent the preset target chromaticity values ​​of the preset picture, and x1 and y1 represent the chromaticity values ​​of the display unit of the preset picture.

[0083] In one example, when a display unit is divided into color deviation gradients, the color deviation degree Δd between the chromaticity of the preset image and the target chromaticity value of the preset image is calculated first, and then the display unit is divided into different gradients according to the magnitude of the color deviation degree Δd.

[0084] In one example, the color shift degrees Δd of the display units in the Nth gradient and the color shift degrees of the display units in the adjacent gradients satisfy the formula: (N-1)*ΔE≤Δd≤(N+1)*ΔE.

[0085] FIG4 is a schematic diagram of color shift gradients according to some embodiments of the present disclosure. FIG4 illustrates a color shift gradient 30 including a gradient with N=1, a gradient with N=2, and a gradient with N=3. The number of gradients in the color shift gradient can be set according to the requirements of the display screen. FIG4 only illustrates the color shift gradient 30, but the shape of the color shift gradient depends on the actual data of the display screen.

[0086] In one example, the color deviation degree Δd of all display units is compared with a preset color deviation step size ΔE, and all display units with the same multiple of Δd = N*ΔE (N = 1, 2, 3, ..., N) are connected to form a virtual color deviation gradient line corresponding to the display screen. This method distinguishes the chromaticity changes of different areas / display units of the entire display screen. Therefore, in actual correction and adjustment, only the display units within the same gradient need to be processed, thereby reducing the overall work complexity.

[0087] Optionally, the preset color deviation step is any value within the range of 0.0014-0.007 of the color deviation degree relative to the preset target chromaticity value.

[0088] In one example, the human eye is difficult to recognize when the color deviation is too small, and the preset color deviation step size is too small, which will result in too many gradients in the color deviation gradient, which is not conducive to reducing the complexity and amount of correction data of the display difference correction, and reduces the speed and efficiency of the display difference correction.

[0089] In one example, when the color shift is too large, the human eye will perceive the difference as too large. If the preset color shift step size is too large, the viewer will see obvious color shift in different parts of the display screen, resulting in a decrease in image quality and failure to achieve the correction purpose.

[0090] In one example, the preset color deviation step size is any value in the range of 0.0014-0.007, for example, the preset color deviation step size is any value of 0.002, 0.003, 0.004, 0.005, and 0.006, which can make the degree of color deviation between different gradients appropriate.

[0091] In other embodiments, the preset color deviation step between different gradients may not be a fixed value. For example, in FIG3 , the preset color deviation step between the N=1 gradient and the N=2 gradient is set to 0.003, and the preset color deviation step between the N=2 gradient and the N=3 gradient is set to 0.004. The color deviation step between different gradients may be determined according to the actual requirements of the display screen so as to simultaneously reduce the complexity of display difference correction and the amount of correction data, while ensuring good viewing quality.

[0092] FIG5 is a schematic diagram of the process steps for determining correction parameters according to some embodiments of the present disclosure. Referring to FIG5 , the process of determining correction parameters of multiple display units corresponding to a preset screen according to color cast gradients may include step S410, step S420, and step S430.

[0093] In step S410 , the chromaticity average value of a plurality of display units in the same gradient is calculated.

[0094] In step S420, the display unit closest to the chromaticity average value is determined.

[0095] In one example, the display unit closest to the chromaticity average value may be a chromaticity unit equal to the chromaticity average value.

[0096] In step S430, the chromaticity of the display unit closest to the chromaticity average value is corrected according to the preset target chromaticity value to obtain correction parameters, wherein the correction parameters of the display unit closest to the chromaticity average value are used as correction parameters of multiple display units in the gradient where it is located.

[0097] In one example, before calculating the correction parameters, it is necessary to determine the representative chromaticity value within the gradient. In this case, the chromaticity standard requires statistical analysis of the color coordinates. What needs to be found is the average value of the color coordinates within the gradient of the preset picture (x av ,y av ), at this time it is not necessarily possible to find a color coordinate that completely matches the average value (x av ,y av ) of the display unit, this can be done by finding a value that is equal to the average value of the color coordinates (x av ,y av ) is closest to the display unit, and then the color coordinate average value (x av ,y av ) The chromaticity value of the closest display unit replaces the color coordinate average value (x av ,y av ) as the calibration basis, or with the average value of the color coordinates (x av ,y av ) is used as the reference for correction.

[0098] Specifically, the chromaticity correction can use the following chromaticity correction matrix to obtain the correction parameters:

[0099]

[0100] in, It refers to the chromaticity value of the preset target chromaticity value, and the chromaticity value of the preset target chromaticity value includes the tristimulus values ​​of the red picture, the tristimulus values ​​of the green picture, and the tristimulus values ​​of the blue picture.

[0101] in, It refers to the color coordinates of the display unit closest to the chromaticity average value within the gradient. The color coordinates of the display unit closest to the chromaticity average value within the gradient include the three stimulus values ​​of the red picture, the three stimulus values ​​of the green picture, and the three stimulus values ​​of the blue picture.

[0102] in, is the matrix of correction parameters.

[0103] In one example, multiple display units within the same gradient are compensated using the correction parameters of the display unit closest to the chromaticity average value within the gradient, and multiple display units within different gradients are compensated using different correction parameters.

[0104] It should be noted that the chromaticity of the display unit closest to the chromaticity average value is corrected according to the preset target chromaticity value to obtain the correction parameter. Correction can also be performed by other methods.

[0105] FIG6 is a flow chart of a display difference correction method according to other embodiments of the present disclosure. Referring to FIG6 , the spatial point set includes a plurality of small points. The display difference correction method of the display screen may further include step S600 .

[0106] In step S600, at least one small point is determined as a reference point, and multiple small points other than the reference point are divided into different viewing levels according to the difference between the image information corresponding to the small points other than the reference point and the image information corresponding to the reference point, so as to establish viewing level data.

[0107] In one example, when two or more viewers are viewing a display screen, the small point occupied by one of the viewers is used as the reference point, and the display screen is compensated using the correction parameters corresponding to the reference point. At this time, the image quality seen by other viewers who occupy points other than the reference point is degraded. The image information corresponding to the small points other than the reference point is compared with the image information corresponding to the reference point. Based on the comparison differences, the multiple small points other than the reference point are classified into different viewing levels to establish viewing level data. The viewing level data can then be projected onto the ground using a projection device, or the viewing level data can be provided as a voice prompt, to remind viewers to move to a small point with better image quality for viewing, thereby providing a prompt for the viewing point.

[0108] In one example, viewing level data can be established only with the spatial point of the display screen being viewed directly (the point of view, the first display sub-screen 11 in Figure 3 being viewed directly) as the reference point. When there are two or more viewers viewing the display screen, the correction parameters corresponding to the reference point are used to compensate the display screen for display. The best image can be displayed for the viewer occupying the reference point, while other viewers are reminded to go to a smaller point with better image quality for viewing.

[0109] In some implementations, a plurality of small points are determined to be reference points, wherein different reference points correspond to different viewing level data.

[0110] In one example, multiple small points can be used as reference points to establish different groups of viewing level data. When two or more viewers are viewing the display screen, the small point occupied by any viewer can be used as the reference point, and the correction parameters corresponding to the reference point can be used to compensate the display screen for display, so as to show the best image to the viewer occupying the reference point, and remind other viewers to go to the small point with better image quality for viewing, thereby realizing the prompt of the observation point.

[0111] In some embodiments, multiple small points are divided into different viewing levels according to the following formula:

[0112]

[0113] Among them, ΔP represents the percentage of the display difference between the corresponding other small points and the reference point, m represents the total number of display units involved in the ΔP calculation, and x ai 、y ai represents the color coordinate of the ith display unit collected at the reference point, x bi 、y bi It represents the color coordinate of the i-th display unit collected at any point other than the reference point, where i is less than or equal to m.

[0114] In one example, the display screen may include m display units.

[0115] It should be noted that in the above step S200, image information of the preset screen corresponding to multiple small points can be collected, and the chromaticity information collected in step S200 can be used to calculate ΔP. At this time, there is no need to collect the image information of the display screen again, which can further improve the speed and efficiency of dividing different viewing levels.

[0116] It should be noted that, after step S500, the display screen can display according to the correction parameters corresponding to the multiple small dots, collect the image information of the preset screen corresponding to the multiple small dots again, and use the chromaticity information collected again to calculate ΔP.

[0117] Optionally, in some embodiments, the display difference correction method of a display screen may further include: after establishing the viewing level data, prompting the viewer to perform spatial positioning according to the viewing level data.

[0118] In one example, different levels can be created based on actual user needs, such as a ΔP value in the range of 0%-5% for each level, a ΔP value in the range of 5%-10% for each level, and so on. The specific results can be projected onto the ground using a projection device, prompting viewers to view at smaller locations with better image quality, thereby providing viewing location guidance. The degree of color deviation at each smaller location is calculated and recorded to create viewing level data. For use, the viewing level data simply needs to be loaded and projected.

[0119] In one example, when a viewer enters the spatial point set range of the display screen, the video acquisition device automatically identifies the viewer and calculates the viewer's line of sight (eye position) based on the image recognition method. The human eye line of sight position can be identified through radar, infrared and other image recognition technologies, and the viewing level data information is projected to the ground using a projection device, thereby promoting the viewer to go to a small point with better image quality for viewing.

[0120] In one example, based on the chromaticity differences caused by different viewing positions, the degree of color deviation of different small points is graded, which can form a standing position recommendation for viewers, helping viewers find a better position to view the display screen, thereby solving the problem of multiple viewers' standing positions.

[0121] Specifically, the display difference correction method of the display screen disclosed in the present invention can greatly improve the experience effect and viewing image consistency of immersive display screens such as multi-faceted screens.

[0122] This embodiment provides a display difference correction device, which can perform the display difference correction method of any one of the above embodiments.

[0123] Please refer to Figures 7 to 9, Figure 7 is a structural schematic diagram of a display difference correction device according to some embodiments of the present disclosure; Figure 8 is a structural schematic diagram of a correction parameter determination module according to some embodiments of the present disclosure; Figure 9 is a structural schematic diagram of a display difference correction device according to other embodiments of the present disclosure.

[0124] Some embodiments of the present disclosure provide a display difference correction device 1000 for a display screen, as shown in FIG7 , including a spatial point set confirmation module 100 , an image information acquisition module 200 , a color deviation gradient division module 300 , a correction parameter determination module 400 and a picture correction module 500 .

[0125] The spatial point set confirmation module 100 is configured to determine a spatial point set for viewing the display screen according to the display screen, where the spatial point set includes at least one small point.

[0126] The image information acquisition module 200 is configured to acquire image information of a preset screen displayed on a display screen viewed at a small point, and the image information at least includes chromaticity information of multiple display units of the display screen.

[0127] The color deviation gradient division module 300 is configured to perform color deviation gradient division based on the difference between the chromaticity information of the preset picture collected at the small dot and the preset target chromaticity value of the corresponding preset picture, so that in the preset picture corresponding to the small dot, multiple display units with the same preset color deviation step size are in the same gradient.

[0128] The correction parameter determination module 400 is configured to determine the correction parameters of multiple display units in the corresponding preset picture according to the color deviation gradient, so that in the corresponding preset picture, multiple display units in the same gradient have the same correction parameters, and multiple display units in different gradients have different correction parameters.

[0129] The image correction module 500 is configured to calibrate the multiple display units according to corresponding correction parameters.

[0130] In some embodiments, the spatial point set includes a plurality of small points, each of which corresponds to a color deviation gradient and a set of correction parameters.

[0131] In some embodiments, as shown in FIG8 , the correction parameter determination module includes a calculation unit 401 , a search unit 402 , and a correction unit 403 .

[0132] The calculation unit 401 is configured to calculate the average chromaticity value of multiple display units in the same gradient.

[0133] The searching unit 402 is configured to determine a display unit that is closest to the average chromaticity value.

[0134] The correction unit 403 is configured to correct the chromaticity of the display unit closest to the chromaticity average value according to the preset target chromaticity value to obtain correction parameters. The correction parameters of the display unit closest to the chromaticity average value are the correction parameters of multiple display units in the gradient where it is located.

[0135] In some embodiments, as shown in FIG9 , the spatial point set includes a plurality of small points, and the display difference correction device for a display screen further includes a viewing level classification module 600 .

[0136] The viewing level classification module 600 is configured to determine at least one small point as a reference point, and classify the other multiple small points into different viewing levels according to the difference between the image information corresponding to the other small points and the image information corresponding to the reference point, so as to establish viewing level data.

[0137] Some embodiments of the present disclosure provide a display device, comprising a display screen, wherein the display screen is corrected using the display difference correction method for the display screen provided by the above embodiment, or / and the display screen is corrected using the display difference correction device for the display screen provided by the above embodiment.

[0138] Please refer to Figures 10 and 11. Figure 10 is a schematic structural diagram of a display device according to some embodiments of the present disclosure; Figure 11 is a schematic structural diagram of a display device according to other embodiments of the present disclosure.

[0139] Some embodiments of the present disclosure provide a display device 2000 . As shown in FIG. 10 , the display device 2000 includes a storage module 2001 , a spatial point recognition module 2002 , and a display compensation module 2003 .

[0140] The storage module 2001 is configured to store a set of spatial points and a set of correction parameters corresponding to at least one small point.

[0141] The spatial point recognition module 2002 is configured to recognize the small point where the viewer is located.

[0142] The display compensation module 2003 is configured to call the correction parameters corresponding to a small point to compensate the display screen.

[0143] In one example, when a viewer is watching a display screen, the spatial point recognition module 2002 is automatically identified by the video acquisition device, and the viewer's sight position (eye position) is calculated according to the image recognition method. The human eye sight position can be identified through radar, infrared and other image recognition technologies; the display compensation module 2003 calls the correction parameters corresponding to the small point where the viewer is located (the small point closest to or where the human eye sight position is located) to compensate the display screen, and at this time the viewer can watch the best quality image.

[0144] In one example, when two or more viewers are viewing a display screen, the spatial point recognition module 2002 identifies the eye gaze positions of the two or more viewers. The display compensation module 2003 can also select a small point at which one of the viewers is located as a reference point and use the correction parameters corresponding to the reference point to compensate the display screen for display.

[0145] In some embodiments, as shown in FIG. 11 , the storage module 2001 is further configured to store viewing level data, and the display device 2000 further includes a viewing level prompt module 2004 .

[0146] The viewing level prompting module 2004 is configured to prompt the viewer to go to a smaller location with better image quality for viewing.

[0147] In one example, when there are two or more viewers watching the display screen, the display compensation module 2003 uses the small point occupied by one of the viewers as the reference point, and uses the correction parameters corresponding to the reference point to compensate the display screen for display; the viewing level prompt module 2004 can project the viewing level data information to the ground through a projection device, or use voice prompts to remind the viewers to go to a small point with better image quality for viewing, thereby realizing the prompt of the observation point.

[0148] Figure 12 is a structural diagram of an electronic device according to some embodiments of the present disclosure. Referring to Figure 12, some embodiments of the present disclosure provide an electronic device 3000, which includes a processor 3001 and a memory 3002, and the memory 3002 is configured to store instructions executable by the processor 3001; wherein the processor 3001 is configured to implement the display difference correction method of the display screen provided in the above embodiment when executing the instructions.

[0149] Some embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the display difference correction method for a display screen provided in the above embodiments is implemented.

[0150] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0151] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

[0152] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

[0153] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A method for correcting display difference of a display screen, comprising: Determine a spatial point set for viewing the display screen according to the display screen, wherein the spatial point set includes at least one small point; Collecting image information of a preset picture displayed on the display screen viewed at the small point, wherein the image information at least includes chromaticity information of a plurality of display units of the display screen; Performing color deviation gradient division according to the difference between the chromaticity information of the preset picture collected at the small point and the preset target chromaticity value of the corresponding preset picture, so that in the preset picture corresponding to the small point, the plurality of display units having the same preset color deviation step are in the same gradient; Determining correction parameters of the plurality of display units in the corresponding preset picture according to the color deviation gradient, so that in the corresponding preset picture, the plurality of display units in the same gradient have the same correction parameters, and the plurality of display units in different gradients have different correction parameters; and The plurality of display units are calibrated according to the corresponding calibration parameters.

2. The display difference correction method of a display screen according to claim 1, wherein: The display screen includes at least two display sub-screens, and different display sub-screens have different display directions.

3. The display difference correction method of a display screen according to claim 1, wherein: The spatial point set includes a plurality of small points, each of which corresponds to one color deviation gradient and a set of correction parameters.

4. The display difference correction method of a display screen according to claim 3, wherein: The preset target chromaticity values ​​of the preset pictures corresponding to the plurality of small dots are the same.

5. The display difference correction method of a display screen according to claim 1, wherein: The method for performing the color shift gradient division includes: Different color deviation gradients are divided according to the formula Δd=N*ΔE, where Δd represents the degree of color deviation of the display unit relative to the preset target chromaticity value, ΔE represents the preset color deviation step, and N represents the number of color deviation gradients, where N is an integer.

6. The display difference correction method of a display screen according to claim 5, wherein: The Δd is calculated by the following formula: Among them, x0 and y0 represent the preset target chromaticity values ​​of the preset picture, and x1 and y1 represent the chromaticity values ​​of the display unit of the preset picture.

7. The display difference correction method of a display screen according to claim 1, wherein: The step of determining correction parameters of the plurality of display units in corresponding preset images according to the color deviation gradient includes: Calculating the chromaticity average of a plurality of display units in the same gradient; determining a display unit that is closest to the chromaticity average; and The chromaticity of the display unit closest to the chromaticity average value is corrected according to the preset target chromaticity value to obtain the correction parameters, wherein the correction parameters of the display unit closest to the chromaticity average value are used as the correction parameters of multiple display units within the gradient where it is located.

8. The display difference correction method of a display screen according to claim 3, wherein: The spatial point set includes a plurality of small points, and the display difference correction method of the display screen further includes: Determine at least one of the small points as a reference point, and divide the plurality of small points other than the reference point into different viewing levels according to the difference between the image information corresponding to the small points other than the reference point and the image information corresponding to the reference point, so as to establish viewing level data.

9. The display difference correction method of a display screen according to claim 8, wherein: A plurality of the small points are determined to be the reference points, wherein different reference points correspond to different viewing level data.

10. The display difference correction method of a display screen according to claim 8, wherein: The plurality of small points are divided into different viewing levels according to the following formula: Wherein, ΔP represents the percentage of the display difference between the corresponding other small points and the reference point, m represents the total number of the display units involved in the calculation of ΔP, and x ai ,y ai represents the color coordinate of the ith display unit collected at the reference point, x bi ,y bi It represents the color coordinate of the i-th display unit collected at any point other than the reference point, where i is less than or equal to m.

11. The display difference correction method of a display screen according to claim 1, wherein: The display unit is a sub-pixel that displays the preset picture.

12. A display difference correction device for a display screen, comprising: A spatial point set confirmation module is configured to determine a spatial point set for viewing the display screen according to the display screen, wherein the spatial point set includes at least one small point; An image information acquisition module is configured to acquire image information of a preset picture displayed on the display screen when viewed at the small point, wherein the image information at least includes chromaticity information of a plurality of display units of the display screen; A color deviation gradient division module is configured to perform color deviation gradient division according to the difference between the chromaticity information of the preset picture collected at the small point and the preset target chromaticity value of the corresponding preset picture, so that in the preset picture corresponding to the small point, the multiple display units with the same preset color deviation step are in the same gradient; as well as a correction parameter determination module, configured to determine the correction parameters of the plurality of display units in the corresponding preset picture according to the color deviation gradient, so that in the corresponding preset picture, the plurality of display units in the same gradient have the same correction parameters, and the plurality of display units in different gradients have different correction parameters; The picture correction module is configured to correct the plurality of display units according to the corresponding correction parameters.

13. A display device comprising a display screen, wherein the display screen is calibrated using the display difference correction method for a display screen according to any one of claims 1 to 11.

14. An electronic device, comprising: processor; a memory configured to store instructions executable by the processor; The processor is configured to implement the display difference correction method for a display screen according to any one of claims 1 to 11 when executing the instructions.

15. A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the display difference correction method for a display screen according to any one of claims 1 to 11 is implemented.

Images