A spherical LED screen correction method, device, system and electronic equipment

Abstract

The application relates to the technical field of LED display, and particularly discloses a spherical LED screen correction method, device, system and electronic equipment, which comprises the following steps: acquiring a correction image of a spherical LED screen; determining the positions of image lamp points according to the correction image, and corresponding the image lamp points with screen lamp points; extracting the lamp point brightness values of each image lamp point; calculating original correction coefficients of the screen lamp points; calculating density gradient coefficients of the screen lamp points; and generating screen correction coefficients according to the original correction coefficients and the density gradient coefficients. The spherical LED screen is corrected by using the screen correction coefficients, the influence of the gradient of the spherical LED screen is eliminated, the brightness effects among the modules are unified, the brightness differences among the modules are eliminated, the manual adjustment mode in the prior art is replaced, the correction of the spherical LED screen by technical personnel is more rapid and convenient, and the maintenance cost of the spherical LED screen is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED display, and particularly relates to a spherical LED screen correction method, device, system and electronic equipment. BACKGROUND

[0002] In recent years, XR technology has begun to enter the public view, and more and more concert, press conference, film shooting and television program scenes begin to use XR technology with high-tech and realistic feeling, thereby realizing more possibilities for creation. With the help of 5G, the popularity of XR technology is an irresistible trend. XR video production based on LED display screen first uses real-time rendering technology to restore a photo-level dynamic digital scene on the LED display screen to build a shooting scene, outputs a synthesis through a media server, uses a camera tracking system to locate space and position information, real-time maps the spatial relationship between a character and a scene, and real-time presents and outputs a virtual scene without dead angles. In this real-time rendering shooting scene, an actor can directly interact with a virtual visible scene. Compared with traditional performances without real objects, this scene with a real object reference can make the actor experience a more realistic sensory performance environment and quickly get into the role. In a traditional green screen shooting environment, a lot of time is often spent on fine image extraction processing and color overflow repair. Compared with the traditional green screen, the LED display screen solves this problem. The shooting team can interact with the LED display screen in the created 3D environment and play in the process. In this process, the shooting team can not only real-time edit the played content, but also accurately track the pixels and correct the perspective of the high-resolution rendered 3D image. After the accurate camera tracking system is added, the camera begins to move around the real and virtual elements seamlessly combined in the LED environment, so that the audience observing through the camera view angle produces a fusion immersive illusion. Secondly, since the shooting scene is generated by the LED display screen, it supports importing regular pictures, 360° panoramic pictures and videos, three-dimensional models, and external camera signals into the shooting studio to realize free scene switching at any time.

[0003] Compared with traditional LED screen applications, the virtual production LED display screen has more stringent requirements for accurate color restoration, dynamic high refresh, dynamic high brightness, dynamic high contrast, wide viewing angle without color offset, etc. Therefore, eliminating the differences between screen modules is the basic requirement of LED screen display. However, many XR experience scenarios choose spherical screens for display, and since the existing technology is mainly for correction schemes for flat or arc-shaped LED screens, applying these correction schemes to spherical LED screens cannot present effective correction effects. Therefore, the correction coefficients of the spherical screen are mostly generated manually by staff, which not only is tedious, time-consuming and laborious, but also can only reduce the differences between adjacent modules and cannot completely eliminate the differences between modules, and the effect is often unsatisfactory.

[0004] Therefore, there is an urgent need in the art to find a new technical solution to solve the above problems. SUMMARY

[0005] In view of the technical problems in the prior art, the present application provides a spherical LED screen correction method, device, system and electronic equipment.

[0006] The present application includes a spherical LED screen correction method, the spherical LED screen is composed of screen lamp points, the method comprising:

[0007] Obtaining a correction image of the spherical LED screen; the correction image is composed of image lamp points;

[0008] Determining the positions of the image lamp points according to the correction image, and corresponding the image lamp points with the screen lamp points according to the positions of the image lamp points;

[0009] Extracting the lamp point brightness value of each image lamp point;

[0010] According to the lamp point brightness value and the preset target brightness value, calculating the original correction coefficient of the screen lamp point;

[0011] According to the preset density gradient coefficient calculation strategy and the distance between the image lamp points, calculating the density gradient coefficient of the screen lamp point;

[0012] Generating the screen correction coefficient according to the original correction coefficient and the density gradient coefficient.

[0013] Further, the density gradient coefficient calculation strategy comprises:

[0014] According to the preset lamp point distance calculation strategy, calculating the corresponding lamp point distance value for each image lamp point;

[0015] Generating the density gradient coefficient according to the lamp point distance value and the standard distance value.

[0016] Further, the lamp point distance calculation strategy comprises:

[0017] The distance between adjacent lamp points is calculated according to the positions of the adjacent two lamp points in each row;

[0018] For a non-edge lamp point, the distance values of the lamp point and the left and right lamp points are obtained and the average value is calculated as the lamp point distance value of the lamp point; for an edge lamp point, the distance value of the lamp point and the left or right lamp point is obtained as the lamp point distance value of the lamp point.

[0019] Further, the lamp point distance calculation strategy comprises:

[0020] The distance between adjacent lamp points is calculated according to the positions of the adjacent two lamp points in each column;

[0021] For a non-edge lamp point, the distance values of the lamp point and the left and right lamp points are obtained and the average value is calculated as the lamp point distance value of the lamp point; for an edge lamp point, the distance value of the lamp point and the left or right lamp point is obtained as the lamp point distance value of the lamp point.

[0022] Further, the lamp point distance calculation strategy comprises:

[0023] The distance values of each lamp point and the adjacent lamp points above, below, left and right thereof are calculated;

[0024] The average value of the distance values related to the lamp point is calculated as the lamp point distance value of the lamp point.

[0025] Further, the standard distance value is selected from the maximum value among all the lamp point distance values.

[0026] Further, the original correction coefficient = target brightness value / lamp point brightness value;

[0027] The density gradient coefficient = lamp point distance value / standard distance value;

[0028] The screen correction coefficient = density gradient coefficient * original correction coefficient.

[0029] The present application also comprises a spherical LED screen correction device, the spherical LED screen being composed of screen lamp points, the correction device comprising a correction image acquisition module, a lamp point determination module, a brightness acquisition module, a density gradient coefficient calculation module and a correction coefficient calculation module, wherein:

[0030] The correction image acquisition module is connected with the lamp point determination module, and the correction image acquisition module is used to acquire the correction image of the spherical LED screen; the correction image is composed of image lamp points;

[0031] The lamp point determination module is connected with the correction image acquisition module, the brightness acquisition module and the density gradient coefficient calculation module, and is configured to determine the positions of the image lamp points according to the correction image, and correspond the image lamp points with the screen lamp points according to the positions of the image lamp points.

[0032] The brightness acquisition module is connected with the lamp point determination module and the correction coefficient calculation module, and is configured to extract the lamp point brightness value of each image lamp point.

[0033] The density gradient coefficient calculation module is connected with the lamp point determination module and the correction coefficient calculation module, and is configured to calculate the density gradient coefficient of the screen lamp point according to a preset density gradient coefficient calculation strategy and the distance between the image lamp points.

[0034] The correction coefficient calculation module is connected with the brightness acquisition module and the density gradient coefficient calculation module, and is configured to calculate the original correction coefficient of the screen lamp point according to the lamp point brightness value and a preset target brightness value, and generate the screen correction coefficient according to the original correction coefficient and the density gradient coefficient.

[0035] The application further comprises a spherical LED screen correction system comprising the spherical LED screen correction device and a camera, wherein the camera is in communication connection with the correction device, and is configured to acquire the correction image.

[0036] The application further comprises an electronic device comprising:

[0037] A memory configured to store a computer program.

[0038] A processor configured to execute the computer program to implement the spherical LED screen correction method.

[0039] The spherical LED screen correction method, device, system and electronic device of the application calculate the original correction coefficient according to the lamp point brightness value of the image lamp point in the correction image, then calculate the density gradient coefficient of the screen lamp point according to a preset density gradient coefficient calculation strategy and the distance between the image lamp points, and finally generate the screen correction coefficient according to the original correction coefficient and the density gradient coefficient, so that the screen correction coefficient is used to correct the spherical LED screen, the influence of the gradient of the spherical LED screen is eliminated, the brightness effect between the modules is unified, the brightness difference between the modules is eliminated, and the manual adjustment mode in the prior art is replaced, so that the correction of the spherical LED screen by the technical personnel is more rapid and convenient, and the maintenance cost of the spherical LED screen is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to make the technical solutions of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to be some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0041] Figure 1 The step flow chart of the spherical LED screen correction method of the embodiment of the present application (one);

[0042] Figure 2 The step flow chart of the spherical LED screen correction method of the embodiment of the present application (two);

[0043] Figure 3 The structure composition diagram of the spherical LED screen correction device of the embodiment of the present application;

[0044] Figure 4 The structure composition diagram of the spherical LED screen correction system of the embodiment of the present application;

[0045] Figure 5 The structure composition diagram of the electronic device of the embodiment of the present application. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present application.

[0047] A spherical LED screen correction method of the embodiment of the present application, as shown in Figure 1 , comprises:

[0048] Step S10: Obtain a correction image of the spherical LED screen.

[0049] In the present embodiment, the spherical LED screen is composed of screen light points, and the correction image is composed of image light points. The present embodiment can correct the entire spherical LED screen or correct a part of the module, which is selected according to the situation, and is not limited specifically here.

[0050] In this embodiment, the corrected image is obtained by taking a picture with a camera. To facilitate subsequent screen correction, the camera is placed at the center of the LED screen. This position is suitable when the LED lights of the spherical LED screen are located on the inside. When the LED lights of the spherical LED screen are located on the outside, the camera can be placed at the same height as the center of the sphere, and the distance between the camera and the spherical LED screen can be adjusted so that the background area in the camera image is as small as possible and the screen area is as large as possible, thereby ensuring that the LED lights in the corrected image are clearer.

[0051] When the camera cannot capture all the images of the module to be calibrated at one position, it needs to change positions and capture multiple images. Then, the captured images are stitched together according to the capture positions to obtain the calibrated image described in this embodiment.

[0052] Step S20: Determine the position of the image light point based on the calibration image, and match the image light point with the screen light point based on the position of the image light point.

[0053] This step processes the calibration image. Since the LED screen lights have specific display content when the calibration image is acquired, image recognition processing is performed on the calibration image to determine the position of each image light point in the calibration image, that is, the coordinates of the image light point in the calibration image. After determining the positions of all image light points in the calibration image, a one-to-one correspondence is established between the screen lights on the spherical LED screen and the screen lights.

[0054] Step S30: Extract the brightness value of each light point in the image.

[0055] When calibrating an image, the LED screen lights have specific display content, so the image lights in the calibrated image each have their own brightness value.

[0056] Step S40: Calculate the original correction coefficient of the screen lights based on the light point brightness value and the preset target brightness value.

[0057] The calculation of the original correction coefficient in this step is done using the existing method, namely: Original correction coefficient = Target brightness value / Light point brightness value.

[0058] Step S50: Calculate the density gradient coefficient of the screen light points according to the preset density gradient coefficient calculation strategy and the distance between the image light points.

[0059] Specifically, such as Figure 2 As shown, the density gradient coefficient calculation strategy in this embodiment includes the following steps:

[0060] Step S501: Calculate the corresponding light point distance value for each image light point according to the preset light point distance calculation strategy.

[0061] In the embodiment of the present application, the calculation of the lamp point distance value can include various strategies. For example, the lamp point distance calculation strategy includes:

[0062] The distance between adjacent lamp points is calculated according to the positions of the two adjacent lamp points in each row. For a non-edge lamp point, the distance values of the lamp point and the left and right lamp points are obtained and the average value is calculated as the lamp point distance value of the image lamp point. For an edge lamp point, the distance value of the lamp point and the left or right lamp point is obtained as the lamp point distance value of the image lamp point.

[0063] Since the positions of all the image lamp points have been determined in step S20, the distances between adjacent image lamp points can be calculated. When selecting an image lamp point to calculate the corresponding lamp point distance value, in the row where the image lamp point is located, if the image lamp point is a non-edge lamp point, the distances between the image lamp point and the left and right adjacent image lamp points are calculated first, and then the average value of the two distance values is calculated as the lamp point distance value of the image lamp point. In the row where the image lamp point is located, if the image lamp point is an edge lamp point, there is only left or right adjacent image lamp point, so the distance value of the image lamp point and the left or right image lamp point is obtained directly as the lamp point distance value of the image lamp point.

[0064] In another embodiment, the lamp point distance calculation strategy can include:

[0065] The distance between adjacent lamp points is calculated according to the positions of the two adjacent lamp points in each column. For a non-edge lamp point, the distance values of the lamp point and the upper and lower lamp points are obtained and the average value is calculated as the lamp point distance value of the image lamp point. For an edge lamp point, the distance value of the lamp point and the upper or lower lamp point is obtained as the lamp point distance value of the image lamp point.

[0066] Compared with the previous embodiment, this embodiment determines the adjacent lamp points by "column". For a non-edge image lamp point, there are two adjacent lamp points in the same column, and the lamp point distance value of the image lamp point is calculated by averaging. For an edge image lamp point, the distance between the image lamp point and the adjacent image lamp point is directly taken as the lamp point distance value.

[0067] In another embodiment, the lamp point distance calculation strategy includes:

[0068] The distance values of each lamp point and its adjacent lamp points above, below, left and right are calculated. The average value of the distance values related to the lamp point is calculated as the lamp point distance value of the lamp point. In this way, for the image lamp point at the vertex position, there are two adjacent image lamp points. For the image lamp point at the edge non-vertex position, there are three adjacent image lamp points. For the image lamp point at the non-edge position, there are four adjacent image lamp points. The lamp point distance value of the corresponding image lamp point is determined by averaging.

[0069] The above three implementation manners of the lamp point distance calculation strategy can be used for implementation, and one skilled in the art can select them according to the curved surface angle of the spherical LED screen.

[0070] Step S502: generating a density gradient coefficient according to the lamp point distance value and a set standard distance value.

[0071] After the lamp point distance value corresponding to each image lamp point is calculated through the above embodiment, the density gradient coefficient of the screen lamp point is calculated according to the lamp point distance value. The specific calculation manner can be: density gradient coefficient = lamp point distance value / standard distance value. The standard distance value in the embodiment can be set according to an empirical value, or can be selected as the maximum value in all lamp point distance values as the standard distance value.

[0072] After the density gradient coefficient of the screen lamp point is calculated through the above steps, the subsequent steps are executed.

[0073] Step S60: generating a screen correction coefficient according to the original correction coefficient and the density gradient coefficient.

[0074] The screen correction coefficient in the embodiment is calculated through the following manner: screen correction coefficient = density gradient coefficient * original correction coefficient. Since the one-to-one correspondence between the image lamp point and the screen lamp point has been established in step S20, the screen correction coefficient in the step is calculated through the above method, in combination with the lamp point brightness value and the lamp point distance value of the corresponding image lamp point.

[0075] The screen correction coefficient is calculated through the above method, and the spherical LED screen to be corrected is corrected.

[0076] Since the shape of the spherical LED screen is obviously different from that of the flat screen and the arc-shaped screen, and the distribution of the screen lamp points of the spherical LED screen is also special compared with the distribution of the screen lamp points on the flat screen and the arc-shaped screen, the correction method for the flat screen and the arc-shaped screen in the prior art is not applicable to the spherical LED screen. The embodiment of the present application fully considers the lamp point arrangement factor in the spherical LED screen, and generates the final screen correction coefficient by combining the density gradient coefficient calculated from the distance between the image lamp points and the original correction coefficient, so as to eliminate the influence of the screen gradient, thereby achieving the correction purpose of the "spherical" LED screen. It should be noted that the correction method of the embodiment of the present application can not only correct the spherical LED screen, but also can be applied to the correction of the flat screen and the arc-shaped screen. The distance between the image lamp points is used as a consideration factor for screen correction, and the correction effect is further improved on the basis of the existing correction technology of the flat screen and the arc-shaped screen.

[0077] The present application also includes an embodiment of a spherical LED screen correction device. The spherical LED screen in the embodiment is composed of screen lamp points. As shown in FIG. 2, the spherical LED screen is composed of a plurality of screen lamp points, and the screen lamp points are arranged in a spherical manner. Figure 3As shown, the correction device 100 comprises a correction image acquisition module 101, a lamp point determination module 102, a brightness acquisition module 103, a density gradient coefficient calculation module 104, and a correction coefficient calculation module 105, wherein:

[0078] The correction image acquisition module 101 is connected with the lamp point determination module 102, and the correction image acquisition module 101 is used to acquire the correction image of the spherical LED screen; the correction image is composed of image lamp points;

[0079] The lamp point determination module 102 is connected with the correction image acquisition module 101, the brightness acquisition module 103, and the density gradient coefficient calculation module 104, and the lamp point determination module 102 is used to determine the position of the image lamp point according to the correction image, and to correspond the image lamp point with the screen lamp point according to the position of the image lamp point;

[0080] The brightness acquisition module 103 is connected with the lamp point determination module 102 and the correction coefficient calculation module 105, and the brightness acquisition module 103 is used to extract the lamp point brightness value of each image lamp point;

[0081] The density gradient coefficient calculation module 104 is connected with the lamp point determination module 102 and the correction coefficient calculation module 105, and the density gradient coefficient calculation module 104 is used to calculate the density gradient coefficient of the screen lamp point according to the preset density gradient coefficient calculation strategy and the distance between the image lamp points;

[0082] The correction coefficient calculation module 105 is connected with the brightness acquisition module 103 and the density gradient coefficient calculation module 104, and the correction coefficient calculation module 105 is used to calculate the original correction coefficient of the screen lamp point according to the lamp point brightness value and the preset target brightness value; and to generate the screen correction coefficient according to the original correction coefficient and the density gradient coefficient.

[0083] In the embodiment of the present application, the density gradient coefficient calculation strategy comprises: calculating the corresponding lamp point distance value for each image lamp point according to the preset lamp point distance calculation strategy; and generating the density gradient coefficient according to the lamp point distance value and the set standard distance value.

[0084] The function implementation of the spherical LED screen correction device in the embodiment of the present application can refer to the following steps:

[0085] Step S10: acquiring the correction image of the spherical LED screen.

[0086] Step S20: determining the position of the image lamp point according to the correction image, and corresponding the image lamp point with the screen lamp point according to the position of the image lamp point.

[0087] Step S30: extracting the lamp point brightness value of each image lamp point.

[0088] Step S40: according to the lamp brightness value and the preset target brightness value, calculating the original correction coefficient of the screen lamp point.

[0089] Step S50: according to the preset density gradient coefficient calculation strategy and the distance between the image lamp points, calculating the density gradient coefficient of the screen lamp point.

[0090] The density gradient coefficient calculation strategy includes the steps of:

[0091] Step S501: according to the preset lamp point distance calculation strategy, calculating the corresponding lamp point distance value for each image lamp point.

[0092] Step S502: according to the lamp point distance value and the set standard distance value, generating the density gradient coefficient.

[0093] Step S60: according to the original correction coefficient and the density gradient coefficient, calculating and generating the screen correction coefficient.

[0094] The specific implementation process and description of the above steps can refer to the implementation of the aforementioned embodiments of the spherical LED screen correction method, which will not be repeated here.

[0095] The embodiment of the present application also includes a spherical LED screen correction system, as shown in Figure 4 The correction device 100 of the above embodiment also includes a camera 200, which is in communication connection with the correction device 100, and the camera 200 is used to acquire a correction image. The camera 200 of the present embodiment is used for the collection of the correction image, and the person skilled in the art can select a suitable camera model, and the product parameters of the camera are not limited here.

[0096] The embodiment of the present application also includes an electronic device 300, as shown in Figure 5 The electronic device 300 includes a memory 301 for storing a computer program, and a processor 302 for executing the computer program to implement the spherical LED screen correction method of the above embodiment. The computer program includes computer program code, which can be in the form of source code, object code, executable file or some intermediate form, etc. The memory at least includes any entity or device that can carry the computer program code to the photographing device / terminal device, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), such as U disk, mobile hard disk, magnetic disk or optical disk, etc.

[0097] The spherical LED screen correction method, device, system and electronic equipment of the embodiment of the present application, by correcting the lamp point brightness value of the image lamp point in the image to calculate the original correction coefficient, then calculating the density gradient coefficient of the screen lamp point according to the preset density gradient coefficient calculation strategy and the distance between the image lamp points, finally generating the screen correction coefficient according to the original correction coefficient and the density gradient coefficient, correcting the spherical LED screen by using the screen correction coefficient, eliminating the influence of the gradient of the spherical LED screen, unifying the brightness effect between the modules, eliminating the brightness difference between the modules, and the present application replaces the manual adjustment mode in the prior art, so that the correction of the spherical LED screen by the technical personnel is more rapid and convenient, and the maintenance cost of the spherical LED screen is reduced; at the same time, the present application can also be used for the correction of the arc-shaped LED screen, and can also have a better correction effect.

[0098] The above is further described by means of specific embodiments, but it should be understood that the specific description herein should not be understood as limiting the essence and scope of the present application, and various modifications made by those skilled in the art after reading the above description also belong to the scope of the present application.

Claims

1. A spherical LED screen correction method, characterized in that, The spherical LED screen is composed of screen lamp points, and the method comprises: obtaining a correction image of the spherical LED screen; the correction image is composed of image lamp points; determining the positions of the image lamp points according to the correction image, and corresponding the image lamp points with the screen lamp points according to the positions of the image lamp points; extracting a lamp point brightness value of each image lamp point; calculating original correction coefficients of the screen lamp points according to the lamp point brightness value and a preset target brightness value; calculating density gradient coefficients of the screen lamp points according to a preset density gradient coefficient calculation strategy and distances between the image lamp points; generating screen correction coefficients according to the original correction coefficients and the density gradient coefficients. The density gradient coefficient calculation strategy comprises: calculating a corresponding lamp point distance value for each image lamp point according to a preset lamp point distance calculation strategy; generating the density gradient coefficients according to the lamp point distance value and a set standard distance value.

2. The spherical LED screen correction method of claim 1, wherein, The lamp point distance calculation strategy comprises: calculating distances between adjacent lamp points according to the positions of the adjacent lamp points in each row; for non-edge lamp points, obtaining distance values of the lamp points with left and right lamp points and calculating an average value as a lamp point distance value of the lamp point; for edge lamp points, obtaining a distance value of the lamp point with a left or right lamp point as a lamp point distance value of the lamp point.

3. The spherical LED screen correction method of claim 1, wherein, The lamp point distance calculation strategy comprises: calculating distances between adjacent lamp points according to the positions of the adjacent lamp points in each column; for non-edge lamp points, obtaining distance values of the lamp points with upper and lower lamp points and calculating an average value as a lamp point distance value of the lamp point; for edge lamp points, obtaining a distance value of the lamp point with an upper or lower lamp point as a lamp point distance value of the lamp point.

4. The spherical LED screen correction method of claim 1, wherein, The lamp point distance calculation strategy comprises: calculating distance values of each lamp point with adjacent lamp points above, below, left and right of the lamp point; calculating an average value of the distance values related to the lamp point as a lamp point distance value of the lamp point.

5. The spherical LED screen correction method of claim 1, wherein, The standard distance value is selected from a maximum value in all the lamp point distance values.

6. The spherical LED screen correction method of claim 1, wherein: the original correction coefficient = target brightness value / lamp point brightness value; the density gradient coefficient = lamp point distance value / standard distance value; the screen correction coefficient = density gradient coefficient * original correction coefficient.

7. A spherical LED screen correction device, characterized by, The spherical LED screen is composed of screen lamp points, and the correction device comprises a correction image acquisition module, a lamp point determination module, a brightness acquisition module, a density gradient coefficient calculation module and a correction coefficient calculation module, wherein: the correction image acquisition module is connected with the lamp point determination module, and the correction image acquisition module is used to obtain a correction image of the spherical LED screen; the correction image is composed of image lamp points; the lamp point determination module is connected with the correction image acquisition module, the brightness acquisition module and the density gradient coefficient calculation module, and the lamp point determination module is used to determine the positions of the image lamp points according to the correction image, and to correspond the image lamp points with the screen lamp points according to the positions of the image lamp points; The luminance acquisition module is connected with the lamp point determination module and the correction coefficient calculation module, and is configured to extract a lamp point luminance value of each image lamp point; The density gradient coefficient calculation module is connected with the lamp point determination module and the correction coefficient calculation module, and is configured to calculate a density gradient coefficient of the screen lamp point according to a preset density gradient coefficient calculation strategy and a distance between the image lamp points; The correction coefficient calculation module is connected with the luminance acquisition module and the density gradient coefficient calculation module, and is configured to calculate an original correction coefficient of the screen lamp point according to the lamp point luminance value and a preset target luminance value, and generate a screen correction coefficient according to the original correction coefficient and the density gradient coefficient; The density gradient coefficient calculation strategy comprises: calculating a corresponding lamp point distance value for each image lamp point according to a preset lamp point distance calculation strategy; generating the density gradient coefficient according to the lamp point distance value and a standard distance value.

8. A spherical LED screen correction system, characterized by, The spherical LED screen correction device comprises a camera, which is in communication connection with the correction device and is configured to acquire the correction image.

9. An electronic device, comprising: The camera comprises: a memory configured to store a computer program; a processor configured to execute the computer program to implement the spherical LED screen correction method according to any one of claims 1 to 6.

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