LED lamp panel spare part module correction method and device and computer equipment

Abstract

The invention discloses an LED lamp panel spare part module correction method and device and computer equipment, and the method comprises the steps: obtaining an initial lamp point coefficient set which is corrected for the first time before an LED lamp panel module is not damaged, and determining a lamp point coefficient set of a region which does not need to be replaced; obtaining a re-corrected secondary lamp point coefficient set after the spare lamp panel module is replaced by the LED lamp panel module, and determining a lamp point coefficient set of an unreplaced area; calculating a mean value and a standard deviation of the lamp point coefficient set of the area without replacement; calculating a mean value and a standard deviation of the lamp point coefficient set of the non-replacement area; normalizing the secondary lamp point coefficient set to the mean value and the standard deviation of the lamp point coefficient set of the area which does not need to be replaced, and determining the lamp point coefficient of the spare lamp panel module; and correcting the spare lamp panel module according to the lamp point coefficient of the spare lamp panel module. According to the invention, the consistency of the brightness and the chromaticity of the new module and the original module is ensured, the macroscopic difference between the new module and the original module is avoided, and the uniformity of the whole LED display screen is ensured.

Description

Technical Field

[0001] This application relates to the technical field of display technology, and particularly relates to a calibration method, device, and computer equipment for LED lamp board spare modules. Background Art

[0002] LED displays are widely used in many fields such as advertising, television, and public information display due to their high brightness, low power consumption, long lifespan, etc. In the advertising field, LED displays are widely used in outdoor billboards, commercial advertisements, and in-vehicle advertisements, etc., and can clearly and vividly display information, attracting the attention of more viewers. In the television industry, the high definition and color expressiveness of LED displays make them the first choice for home theaters and professional TV screens. In addition, in terms of public information display, LED displays can be applied to traffic signs, public safety reminders, flight information displays at airports and stations, etc., providing real-time dynamic information updates.

[0003] However, during actual use, due to reasons such as environmental changes and aging, the lamp board modules of LED displays may exhibit uneven brightness and chromaticity, thus affecting the overall consistency of the display effect. Therefore, when some lamp board modules of an LED display malfunction or age, it is usually necessary to replace them with spare lamp board modules. However, due to reasons such as production tolerances, aging degrees, or different manufacturing batches between the new spare modules and the original modules, there may be differences in aspects such as brightness, chromaticity, and gray levels. If these differences are not corrected, it will result in uneven display effects on the screen, affecting the visual experience. Therefore, it is necessary to accurately calibrate the replaced spare lamp board modules to ensure that the display effects of the new and old modules are consistent and to avoid color differences and brightness differences in the display effects.

[0004] The patent document with the publication number: CN114974103A discloses a calibration method, device, and electronic equipment for an LED display based on spare modules. The method includes: determining the brightness coefficient ratio; determining the fourth brightness correction coefficient according to the third brightness correction coefficient and the brightness coefficient ratio; determining the color gamut conversion matrix according to the average matrix of the first brightness and chromaticity correction coefficients and the average matrix of the second brightness and chromaticity correction coefficients; determining the fourth brightness and chromaticity correction coefficient matrix according to the color gamut conversion matrix and the third brightness and chromaticity correction coefficient matrix; replacing the brightness correction coefficients in the fourth brightness and chromaticity correction coefficient matrix with the fourth brightness correction coefficient to obtain the target brightness and chromaticity correction coefficient matrix for each light point, so as to calibrate the LED display. It can construct an algorithm for correcting coefficients through the coefficient relationship between the spare module and the entire screen, perform calibration processing on the specified area, not only ensure the display effect after calibration, but also greatly reduce the calibration time and improve the calibration rate.

[0005] It can be seen that the prior art performs global calibration after replacing the spare lamp board module, aiming to adjust the overall brightness and chromaticity differences of the display screen. However, this method often results in visible differences between the new and old modules. Even after global calibration, there are still differences in the display effects between the new spare lamp board module and the original module. Specifically, in terms of brightness, chromaticity, or gray-scale transition, the display effects in some areas may be significantly different from those in other areas, thus affecting the uniformity and consistency of the entire display screen. This problem is particularly prominent in large-scale or high-precision display requirements and is difficult to meet the requirements of precise calibration. Summary of the Invention

[0006] For this reason, the present application provides a calibration method, device, and computer device for an LED lamp board spare module to solve the problem in the prior art that there are large differences in brightness and chromaticity between the new and old modules due to global calibration.

[0007] To achieve the above object, the present application provides the following technical solutions:

[0008] In a first aspect, a calibration method for an LED lamp board spare module includes:

[0009] Step 1: Obtain the initial lamp point coefficient set of the first calibration before the LED lamp board module is damaged, and determine the lamp point coefficient set of the area that does not need to be replaced;

[0010] Step 2: Obtain the secondary lamp point coefficient set of the re-calibration after the LED lamp board module is replaced with a spare lamp board module, and determine the lamp point coefficient set of the area that has not been replaced;

[0011] Step 3: Calculate the mean and standard deviation of the lamp point coefficient set of the area that does not need to be replaced;

[0012] Step 4: Calculate the mean and standard deviation of the lamp point coefficient set of the area that has not been replaced;

[0013] Step 5: Normalize the secondary lamp point coefficient set to the mean and standard deviation of the lamp point coefficient set of the area that does not need to be replaced, and determine the lamp point coefficient of the spare lamp board module;

[0014] Step 6: Calibrate the spare lamp board module according to the lamp point coefficient of the spare lamp board module.

[0015] Preferably, in Step 1, during the first calibration, the lamp points of the entire LED lamp board module are uniformly adjusted in terms of brightness, chromaticity, and gray scale, so as to obtain the initial lamp point coefficient set.

[0016] Preferably, in Step 3, the calculation formulas for the mean and standard deviation of the lamp point coefficient set of the area that does not need to be replaced are:

[0017]

[0018] Among them, μ1 represents the mean of the area that does not need to be replaced, σ1 represents the standard deviation of the area that does not need to be replaced, N represents the total number of lamp points in the area that does not need to be replaced, and i represents the i-th lamp point. represents the set of lamp point coefficients of the area that does not need to be replaced.

[0019] Preferably, in step 4, the formulas for calculating the mean and standard deviation of the set of lamp point coefficients in the non-replaced area are:

[0020]

[0021] Among them, μ2 represents the mean of the non-replaced area, σ2 represents the standard deviation of the non-replaced area, N represents the total number of lamp points in the non-replaced area, and i represents the i-th lamp point. represents the set of lamp point coefficients of the non-replaced area.

[0022] Preferably, in step 5, the formula for calculating the lamp point coefficient of the spare lamp board module is:

[0023]

[0024] Among them, C′2(i) represents the lamp point coefficient of the spare lamp board module, and C2(i) represents the set of secondary lamp point coefficients.

[0025] Preferably, step 5 is replaced by: determining the lamp point coefficient of the spare lamp board module by using the global average method.

[0026] Preferably, the formula for calculating the lamp point coefficient of the spare lamp board module is:

[0027] C′2(i) = C2(i) - μ2 + μ1

[0028] Or

[0029]

[0030] Among them, C′2(i) represents the lamp point coefficient of the spare lamp board module, C2(i) represents the set of secondary lamp point coefficients, μ1 represents the mean of the area that does not need to be replaced, and μ2 represents the mean of the non-replaced area.

[0031] In a second aspect, an LED lamp board spare module calibration device includes:

[0032] An initial lamp point coefficient set acquisition module, configured to acquire the initial lamp point coefficient set obtained from the first calibration before the LED lamp board module is damaged, and determine the set of lamp point coefficients of the area that does not need to be replaced;

[0033] A secondary lamp point coefficient set acquisition module, configured to acquire the set of secondary lamp point coefficients obtained from the re-calibration after the LED lamp board module replaces the spare lamp board module, and determine the set of lamp point coefficients of the non-replaced area;

[0034] A calculation module for calculating the mean and standard deviation of the set of light point coefficients in the area that does not need to be replaced;

[0035] And calculating the mean and standard deviation of the set of light point coefficients in the area that has not been replaced;

[0036] A normalization module for normalizing the set of secondary light point coefficients to the mean and standard deviation of the set of light point coefficients in the area that does not need to be replaced, and determining the light point coefficients of the spare lamp board module;

[0037] A calibration module for calibrating the spare lamp board module according to the light point coefficients of the spare lamp board module.

[0038] In a third aspect, a computer device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the steps of an LED lamp board spare module calibration method are implemented.

[0039] Compared with the prior art, the present application has at least the following beneficial effects:

[0040] The present application provides an LED lamp board spare module calibration method, device and computer device. By obtaining the initial set of light point coefficients of the first calibration before the LED lamp board module is damaged, and determining the set of light point coefficients in the area that does not need to be replaced; obtaining the set of secondary light point coefficients of the re-calibration after replacing the spare lamp board module of the LED lamp board module, and determining the set of light point coefficients in the area that has not been replaced; calculating the mean and standard deviation of the set of light point coefficients in the area that does not need to be replaced; calculating the mean and standard deviation of the set of light point coefficients in the area that has not been replaced; normalizing the set of secondary light point coefficients to the mean and standard deviation of the set of light point coefficients in the area that does not need to be replaced, and determining the light point coefficients of the spare lamp board module; calibrating the spare lamp board module according to the light point coefficients of the spare lamp board module. The present application calculates the mean and standard deviation of the set of light point coefficients in the area where the spare lamp board module has not been replaced, and normalizes the coefficients of the new module, accurately ensuring the consistency of the new module and the original module in terms of brightness and chromaticity, avoiding the visible differences between the new and old modules, and ensuring the uniformity of the entire LED display screen. Description of the Drawings

[0041] To more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings generally should not be regarded as limiting conditions when implementing the present application; for example, those skilled in the art are capable of making conventional adjustments or further optimizations to the addition / deletion / attribution division of certain units (components), specific shapes, positional relationships, connection methods, dimensional proportional relationships, etc. based on the technical concept disclosed in the present application and the exemplary drawings.

[0042] Figure 1It is a flowchart of a calibration method for an LED lamp board spare module provided in the first embodiment of the present application. Detailed implementation manners

[0043] The present application will be further described in detail below with reference to the accompanying drawings and through specific embodiments.

[0044] In the description of the present application: Unless otherwise specified, the meaning of "a plurality" is two or more. Terms such as "first", "second", "third", etc. in the present application are intended to distinguish the objects being referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance level or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0045] Terms such as "upper", "lower", "left", "right", "middle", etc. cited in the present application are usually indications of the general relative position relationship for the convenience of intuitively understanding with reference to the accompanying drawings, and are not absolute limitations on the position relationship in the actual product.

[0046] First embodiment

[0047] Please refer to Figure 1 , this embodiment provides a calibration method for an LED lamp board spare module, especially for the brightness and chromaticity calibration of an LED display screen. The method includes:

[0048] S1: Obtain the initial light point coefficient set of the first calibration before the LED lamp board module is damaged, and determine the light point coefficient set of the area that does not need to be replaced;

[0049] In this embodiment, before the LED lamp board module is damaged, it is necessary to perform the first calibration on the entire LED display screen, aiming to ensure that the brightness and chromaticity of each light point can reach the required standards. The first calibration process does not involve replacing any lamp board modules, but prepares for possible failures, aging, and other problems in the future.

[0050] Specifically, the purpose of the first calibration is to uniformly adjust the brightness, chromaticity, and gray scale of the light points of the entire LED display screen (LED lamp board module), so as to obtain the initial light point coefficient set C1 of each light point. During this process, usually 3 coefficients are required for brightness calibration, and 9 coefficients are required for chromaticity calibration. The brightness and chromaticity coefficients of each light point are recorded to form a complete initial light point coefficient set C1.

[0051] Specifically, since the spare lamp board module is for dealing with possible future failures or aging, there will be no areas that need to be replaced due to any failures or aging during the first calibration process. These areas will only be involved when replacing the spare lamp board module in the future. To avoid the influence of these areas that need to be replaced in the future (i.e., the areas that need to be replaced due to failures or aging), this embodiment will pre-determine the areas of the spare lamp board to be replaced, and the set of lamp point coefficients of the non-replaced areas that do not belong to these areas is called That is, the set of lamp point coefficients of the areas that do not need to be replaced is denoted as

[0052] In other words, since the spare lamp board module is brand new during the first calibration and there will be no problem areas. To deal with possible future problems, this embodiment will pre-mark the areas that may need to be replaced, and the parameter set (set of lamp point coefficients) of those unmarked areas (areas that do not need to be replaced) is named The purpose of doing this is to be able to manage and maintain the lamp board module more accurately during subsequent use and avoid unnecessary influence during future replacements.

[0053] S2: Obtain the secondary set of lamp point coefficients after re-calibrating the LED lamp board module after replacing the spare lamp board module, and determine the set of lamp point coefficients of the non-replaced areas;

[0054] Specifically, after replacing the spare lamp board module, there may be differences in the lamp point coefficients between the new module (i.e., the spare lamp board module) and the original module. To eliminate these differences, the entire LED display screen must be re-calibrated to obtain the secondary set of lamp point coefficients C2.

[0055] The calibration process of the new module is similar to the first calibration. For the new lamp board module, this embodiment re-performs brightness and chromaticity calibration to obtain the new set of lamp point coefficients C2. At this stage, it has been determined which areas of the module have been replaced, and the set of lamp point coefficients of the non-replaced areas is represented by to represent.

[0056] S3: Calculate the mean and standard deviation of the set of lamp point coefficients of the areas that do not need to be replaced;

[0057] To ensure the display consistency between the new and old modules, this embodiment quantifies the display differences between the new module and the original module by calculating the mean and standard deviation of the set of lamp point coefficients of the areas that do not need to be replaced and the set of lamp point coefficients of the non-replaced areas.

[0058] Specifically, this step first calculates the mean of the brightness and chromaticity of the set of lamp point coefficients of the areas that do not need to be replaced. The calculation formula is:

[0059]

[0060] Among them, μ1 represents the average brightness or chromaticity of the area that does not need to be replaced, N represents the total number of light points in the area that does not need to be replaced, and i represents the i-th light point. represents the set of light point coefficients of the area that does not need to be replaced.

[0061] Then calculate the standard deviation of the brightness and chromaticity of the set of light point coefficients in the area that does not need to be replaced. The calculation formula is:

[0062]

[0063] Among them, σ1 represents the standard deviation of the area that does not need to be replaced.

[0064] S4: Calculate the mean and standard deviation of the set of light point coefficients in the area where replacement has not occurred;

[0065] Specifically, in this step, first calculate the mean of the brightness and chromaticity of the set of light point coefficients in the area where replacement has not occurred. The calculation formula is:

[0066]

[0067] Among them, μ2 represents the mean of the area where replacement has not occurred, N represents the total number of light points in the area where replacement has not occurred, and i represents the i-th light point. represents the set of light point coefficients in the area where replacement has not occurred.

[0068] Then calculate the standard deviation of the brightness and chromaticity of the set of light point coefficients in the area where replacement has not occurred. The calculation formula is:

[0069]

[0070] Among them, σ2 represents the standard deviation of the area where replacement has not occurred.

[0071] Through the mean and standard deviation calculated in Step 3 and Step 4 in this embodiment, the brightness and chromaticity differences between the new and old modules in the area where replacement has not occurred can be quantified.

[0072] S5: Normalize the set of secondary light point coefficients to the mean and standard deviation of the set of light point coefficients in the area that does not need to be replaced, and determine the light point coefficients of the spare lamp board module;

[0073] Specifically, in order to eliminate the display differences between the new and old modules, in this embodiment, the set of secondary light point coefficients C2 is normalized so that the mean and standard deviation of C2 are the same as to achieve consistency, thereby realizing the display consistency between the new module and the original module.

[0074] During normalization, by adjusting the coefficients of each light point in C2, its mean and standard deviation are made the same as consistent. The formula is:

[0075]

[0076] Among them, C′2(i) is the light point coefficient of the new module after normalization, that is, the light point coefficient of the spare lamp board module.

[0077] This step can also use the global averaging method to ensure the consistency of the global brightness and chromaticity between the new and old modules. Specifically: the global averaging method corrects the global brightness and chromaticity of the new module, making the average brightness and chromaticity of the new module consistent with that of the original module. Specifically, by using simple operations such as addition, subtraction, multiplication, and division, the coefficients of the new module are adjusted to the same mean value as the original module, thus ensuring the consistency of the global brightness and chromaticity between the new and old modules.

[0078] When using the global averaging method, the calculation formula for the light point coefficient of the spare lamp board module is:

[0079] C′2(i) = C2(i) - μ2 + μ1

[0080] Or

[0081]

[0082] Advantages of the global averaging method: The implementation of the global averaging method is relatively simple, the calculation process is intuitive, and it does not require complex algorithm support; in addition, since it only involves mean adjustment, the global averaging method can complete the correction quickly, especially suitable for simple display systems.

[0083] Disadvantages of the global averaging method: When the global averaging method adjusts the mean value of the coefficients by methods such as addition, subtraction, multiplication, and division, although the brightness and chromaticity of the new module can reach the mean value of the original module, it cannot ensure the same standard deviation. Therefore, there may be differences in the range of brightness and chromaticity changes between the new and old modules, and it is impossible to ensure the smoothness of the transition and the display consistency, especially in a large display area; in addition, due to ignoring the differences in local areas, it is impossible to finely adjust the brightness and chromaticity of each light point, and there may be situations of overcompensation or undercorrection, affecting the consistency of the display effect.

[0084] S6: Calibrate the spare lamp board module according to the light point coefficient of the spare lamp board module.

[0085] Specifically, the C′2(i) coefficient set after normalization is consistent with the coefficient set of the original module in terms of mean standard deviation, finally ensuring the display consistency between the new and old modules. The normalized coefficients can be directly used for the display drive of the screen, thereby achieving the consistency of the display effect in different areas of the entire display screen and avoiding the visible differences between the new and old modules caused by global calibration.

[0086] A method for calibrating a spare module of an LED light board provided in this embodiment generates an initial set of light point coefficients C1 through the first calibration, then obtains the second set of light point coefficients C2 through re-calibration, and adjusts the calibration results by means of mean and standard deviation normalization, so as to achieve the matching of brightness, chromaticity and gray scale characteristics between the new and old modules, thereby ensuring the precise calibration of the display consistency between the newly replaced spare light board module and the original module, and avoiding display differences caused by the replacement of the spare module.

[0087] In this embodiment, by calculating the mean and standard deviation of the set of light point coefficients in the area where the spare light board module is not replaced, and normalizing the coefficients of the new module, the consistency between the new module and the original module in terms of brightness and chromaticity is precisely guaranteed. Compared with the global calibration method of the prior art, this embodiment has the following advantages:

[0088] (1) Stronger display consistency: Through precise calculation and normalization adjustment, the consistency between the new module and the original module in terms of brightness and chromaticity is guaranteed, avoiding visible differences between the new and old modules to ensure the uniformity of the entire display screen.

[0089] (2) Simple calculation and convenient implementation: The mean and standard deviation calculation method adopted in this embodiment is simple and efficient, and the normalization operation is simple and easy to perform. Compared with the traditional method, it does not require complex calculations and large-scale data storage, greatly reducing the calculation and storage burden, and is especially suitable for the rapid maintenance of large-scale display screens.

[0090] (3) Avoid overcompensation and display differences: By finely adjusting the non-replaced area in this embodiment, the overcompensation phenomenon that may occur in the traditional global calibration is avoided, thus achieving a more natural and uniform display effect.

[0091] The effects produced include:

[0092] (1) Improve display uniformity: Through precise calibration between the new and old modules, the present invention can significantly improve the consistency and uniformity of the display effect, avoid problems of uneven brightness and chromaticity caused by module differences, and enhance the visual experience.

[0093] (2) Simplify the calibration process and save costs: The normalization method of the present invention has simple calculations and does not require complex hardware and algorithm support, reducing the implementation cost. Especially in large-scale display systems, it can save a large amount of computing resources and time.

[0094] (3) Improve maintenance efficiency: Due to the simple and efficient method, maintenance personnel can quickly complete the calibration work, reducing the maintenance time, and is especially suitable for large LED display systems that require quick response.

[0095] Embodiment 2

[0096] This embodiment provides an LED lamp board spare module calibration device, including:

[0097] An initial light point coefficient set acquisition module, configured to acquire the initial light point coefficient set obtained from the first calibration before the LED lamp board module is damaged, and determine the light point coefficient set of the area that does not need to be replaced;

[0098] A secondary light point coefficient set acquisition module, configured to acquire the secondary light point coefficient set obtained from the re-calibration after replacing the spare lamp board module of the LED lamp board module, and determine the light point coefficient set of the area that has not been replaced;

[0099] A calculation module, configured to calculate the mean and standard deviation of the light point coefficient set of the area that does not need to be replaced;

[0100] And calculate the mean and standard deviation of the light point coefficient set of the area that has not been replaced;

[0101] A normalization module, configured to normalize the secondary light point coefficient set to the mean and standard deviation of the light point coefficient set of the area that does not need to be replaced, and determine the light point coefficient of the spare lamp board module;

[0102] A calibration module, configured to calibrate the spare lamp board module according to the light point coefficient of the spare lamp board module.

[0103] For the specific implementation content of each module in an LED lamp board spare module calibration device, reference can be made to the limitations on an LED lamp board spare module calibration method in the above text, which will not be elaborated here.

[0104] Embodiment Three

[0105] This embodiment provides a computer device, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the steps of an LED lamp board spare module calibration method are implemented.

[0106] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly described should also be regarded as within the scope recorded in this specification.

Claims

1. A calibration method for an LED light board spare module, characterized in that, Including: Step 1: Obtain the initial light point coefficient set of the first calibration before the LED lamp board module is damaged, and determine the light point coefficient set of the area that does not need to be replaced; Step 2: Obtain the secondary light point coefficient set of the re-calibration after replacing the spare lamp board module of the LED lamp board module, and determine the light point coefficient set of the area that has not been replaced; Step 3: Calculate the mean and standard deviation of the light point coefficient set of the area that does not need to be replaced; Step 4: Calculate the mean and standard deviation of the light point coefficient set of the area that has not been replaced; Step 5: Normalize the secondary light point coefficient set to the mean and standard deviation of the light point coefficient set of the area that does not need to be replaced, and determine the light point coefficient of the spare lamp board module; Step 6: Calibrate the spare lamp board module according to the light point coefficient of the spare lamp board module.

2. The method for calibrating the spare module of the LED lamp board according to claim 1, wherein In Step 1, during the first calibration, the brightness, chromaticity, and gray scale of the light points of the entire LED lamp board module are uniformly adjusted to obtain the initial light point coefficient set.

3. The method for calibrating the spare module of the LED light board according to claim 1, wherein, In Step 3, the calculation formulas for the mean and standard deviation of the light point coefficient set of the area that does not need to be replaced are: Among them, μ1 represents the mean of the area that does not need to be replaced, σ1 represents the standard deviation of the area that does not need to be replaced, N represents the total number of light points in the area that does not need to be replaced, and i represents the i-th light point. represents the set of light point coefficients in the area that does not need to be replaced.

4. The method for calibrating the spare module of the LED light board according to claim 3, wherein In Step 4, the calculation formulas for the mean and standard deviation of the light point coefficient set of the area that has not been replaced are: Among them, μ2 represents the mean of the non-replaced area, σ2 represents the standard deviation of the non-replaced area, N represents the total number of light points in the non-replaced area, and i represents the i-th light point. represents the set of light point coefficients in the non-replaced area.

5. The method for calibrating the spare module of the LED lamp board according to claim 4, wherein In Step 5, the calculation formula for the light point coefficient of the spare lamp board module is: Wherein, C′2(i) represents the light point coefficient of the spare lamp board module, and C2(i) represents the secondary light point coefficient set.

6. The method for calibrating an LED lamp board spare module according to claim 1, wherein, Replace Step 5 with: Determine the light point coefficient of the spare lamp board module by using the global average method.

7. The method for calibrating the spare module of the LED light board according to claim 6, wherein, The calculation formula for the light point coefficient of the spare lamp board module is: C′2(i) = C2(i) - μ2 + μ1 Or Wherein, C′2(i) represents the light point coefficient of the spare lamp board module, C2(i) represents the secondary light point coefficient set, μ1 represents the mean of the area that does not need to be replaced, and μ2 represents the mean of the area that has not been replaced.

8. An LED lamp board spare module calibration device, characterized in that, Including: Initial light point coefficient set acquisition module, which is used to obtain the initial light point coefficient set of the first calibration before the LED lamp board module is damaged, and determine the light point coefficient set of the area that does not need to be replaced; Secondary light point coefficient set acquisition module, which is used to obtain the secondary light point coefficient set of the re-calibration after replacing the spare lamp board module of the LED lamp board module, and determine the light point coefficient set of the area that has not been replaced; Calculation module, which is used to calculate the mean and standard deviation of the light point coefficient set of the area that does not need to be replaced; And calculate the mean and standard deviation of the light point coefficient set of the area that has not been replaced; Normalization module, which is used to normalize the secondary light point coefficient set to the mean and standard deviation of the light point coefficient set of the area that does not need to be replaced, and determine the light point coefficient of the spare lamp board module; Calibration module, which is used to calibrate the spare lamp board module according to the light point coefficient of the spare lamp board module.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method described in any one of claims 1 to 7.

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