CN115578970A - Spherical LED screen correction method, device and system and electronic equipment - Google Patents
Spherical LED screen correction method, device and system and electronic equipment Download PDFInfo
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
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- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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Abstract
The invention relates to the technical field of LED display, and particularly discloses a spherical LED screen correction method, a spherical LED screen correction device, a spherical LED screen correction system and electronic equipment, wherein the method comprises the following steps: acquiring a corrected image of the spherical LED screen; determining the position of the image lamp point according to the corrected image, and corresponding the image lamp point with the screen lamp point; extracting the light point brightness value of each image light point; calculating an original correction coefficient of the screen lamp point; calculating the density gradient coefficient of the screen lamp points; and generating a screen correction coefficient according to the original correction coefficient and the density gradient coefficient. According to the invention, the screen correction coefficient is adopted to correct the spherical LED screen, so that the influence of the gradient of the spherical LED screen is eliminated, the brightness effect among modules is unified, the brightness difference among the modules is eliminated, the manual adjustment mode in the prior art is replaced, the correction of the spherical LED screen by technical personnel is quicker and more convenient, and the maintenance cost of the spherical LED screen is reduced.
Description
Technical Field
The invention relates to the technical field of LED display, in particular to a spherical LED screen correction method, a spherical LED screen correction device, a spherical LED screen correction system and electronic equipment.
Background
In recent years, XR technology has begun to advance into the public field of vision, and more scenes such as concert scenes, movie shooting scenes, television programs and the like have begun to apply XR technology with high-tech feeling and lifelike feeling, so that more possibilities are realized for creation. Under the support of 5G, the popularization of the extended reality (XR) technology is more powerful. XR video production with LED display screen as background, at first adopt real-time rendering technique with the dynamic digital scene of photo level, restore on the LED display screen, set up the shooting scene, export the synthesis through media server, utilize camera tracking system location space, positional information, the spatial relationship of mapping personage and scene in real time, present and output a virtual scene without dead angle in real time, and at this kind of real-time rendering's shooting scene, the actor can carry out direct interaction with the virtual visible scene, this kind of scene that has the reference of real object compares in traditional no real object performance and more can let the actor experience more real sense organ performance environment, can make the actor go into the opera fast. Under traditional green curtain shooting environment, often need to spend a large amount of time to carry out meticulous image matting and handle, repair the problem that the colour spills over simultaneously. Compared with the traditional green screen, the LED display screen well solves the problem, a shooting team can interactively play with the LED display screen in a created 3D environment, the shooting team can edit the playing content in real time in the process, can also perform accurate tracking of pixels, and performs perspective correction on a high-resolution rendered 3D image, and after an accurate camera tracking system is added, a camera starts to move around real and virtual elements which are seamlessly combined together in the LED environment, so that audiences who observe through the visual angle of the camera generate a fused immersive illusion; and secondly, as the shooting scene is generated by the LED display screen, the conventional picture, the 360-degree panoramic picture, the video, the three-dimensional model and the external camera signal are guided into the studio, and the scene can be freely switched at any time.
Compared with the traditional LED screen application, the virtually manufactured LED display screen has more strict requirements on accurate color restoration, dynamic high refresh, dynamic high brightness, dynamic high contrast, wide viewing angle without color deviation and the like, so that the basic requirement of LED screen display is to eliminate the difference between screen modules. However, many XR experience scenes select the spherical screen for display, and since most of the prior art are correction schemes for the plane or arc-shaped LED screen, when the correction schemes are applied to the spherical LED screen, effective correction effects cannot be presented, so that the correction coefficients of the spherical screen are generated by manual adjustment of workers, the processing process is complex, time and labor are consumed, the mode can only weaken the difference between adjacent modules, the difference between the modules cannot be thoroughly eliminated, and the effect is not satisfactory.
Therefore, there is a need to find a new technical solution to solve the above problems.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a spherical LED screen correction method, a spherical LED screen correction device, a spherical LED screen correction system and electronic equipment.
The invention comprises a spherical LED screen correction method, wherein the spherical LED screen consists of screen lamp points, and the method comprises the following steps:
acquiring a corrected image of the spherical LED screen; the correction image is composed of image light points;
determining the positions of the image lamp points according to the corrected images, and corresponding the image lamp points to the screen lamp points according to the positions of the image lamp points;
extracting a light point brightness value of each image light point;
calculating an original correction coefficient of the screen light point according to the light point brightness value and a preset target brightness value;
calculating a density gradient coefficient of the screen light points according to a preset density gradient coefficient calculation strategy and the distance between the image light points;
and generating a screen correction coefficient according to the original correction coefficient and the density gradient coefficient.
Further, 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;
and generating a density gradient coefficient according to the lamp point distance value and the set standard distance value.
Further, the lamp point distance calculation strategy comprises:
calculating the distance between the adjacent lamp points according to the positions of the adjacent two lamp points in each row;
for non-edge lamp points, obtaining the distance values between the lamp point and the left and right lamp points and calculating the average value as the lamp point distance value of the lamp point; and for the edge lamp point, acquiring the distance value between the lamp point and the left or right lamp point as the lamp point distance value of the lamp point.
Further, the lamp point distance calculation strategy comprises:
calculating the distance between the adjacent lamp points according to the positions of the two adjacent lamp points in each row;
for non-edge lamp points, obtaining the distance values between the lamp points and the upper side lamp points and the lower side lamp points and calculating an average value as the lamp point distance value of the lamp points; and for the edge lamp point, acquiring the distance value between the lamp point and the upper or lower lamp point as the lamp point distance value of the lamp point.
Further, the lamp point distance calculation strategy comprises:
calculating the distance value between each lamp point and the adjacent lamp points above, below, on the left side and on the right side;
and calculating the average value of the distance values related to the lamp points as the lamp point distance value of the lamp points.
Further, the standard distance value is selected from the maximum value among all the lamp point distance values.
Further, the original correction coefficient = target brightness value/lamp point brightness value;
density gradient coefficient = lamp point distance value/standard distance value;
screen correction coefficient = density gradient coefficient original correction coefficient.
The invention also comprises a spherical LED screen correction device, wherein the spherical LED screen consists of screen light points, the correction device comprises a correction image acquisition module, a light point determination module, a brightness acquisition module, a density gradient coefficient calculation module and a correction coefficient calculation module, and the correction device comprises:
the correction image acquisition module is connected with the lamp point determination module and is used for acquiring a correction image of the spherical LED screen; the correction image is composed of image light points;
the light point determining module is connected with the corrected image acquiring module, the brightness acquiring module and the density gradient coefficient calculating module and is used for determining the positions of the image light points according to the corrected image and corresponding the image light points and the screen light points according to the positions of the image light points;
the brightness acquisition module is connected with the lamp point determination module and the correction coefficient calculation module and is used for extracting the lamp point brightness value of each image lamp point;
the density gradient coefficient calculation module is connected with the light point determination module and the correction coefficient calculation module and is used for calculating the density gradient coefficient of the screen light points according to a preset density gradient coefficient calculation strategy and the distance between the image light points;
the correction coefficient calculation module is connected with the brightness acquisition module and the density gradient coefficient calculation module and is used for calculating an original correction coefficient of the screen light point according to the light point brightness value and a preset target brightness value; and generating a screen correction coefficient according to the original correction coefficient and the density gradient coefficient.
The invention also comprises a spherical LED screen correction system, which comprises the spherical LED screen correction device and a camera, wherein the camera is in communication connection with the correction device and is used for acquiring a corrected image.
The invention also includes an electronic device comprising:
a memory for storing a computer program;
and the processor is used for realizing the spherical LED screen correction method when executing the computer program.
According to the spherical LED screen correction method, the device, the system and the electronic equipment, after the original correction coefficient is calculated by correcting the light point brightness value of the image light points in the image, the density gradient coefficient of the screen light points is calculated according to the preset density gradient coefficient calculation strategy and the distance between the image light points, finally, the screen correction coefficient is generated according to the original correction coefficient and the density gradient coefficient, the spherical LED screen is corrected by adopting the screen correction coefficient, the influence of the gradient of the spherical LED screen is eliminated, the brightness effect among modules is unified, and the brightness difference among the modules is eliminated; meanwhile, the invention can also be used for correcting the arc LED screen, and has better correction effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flowchart illustrating a method for calibrating a spherical LED screen according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a second step of a spherical LED screen calibration method according to an embodiment of the present invention;
FIG. 3 is a structural composition diagram of a spherical LED screen correction device according to an embodiment of the present invention;
FIG. 4 is a structural composition diagram of a spherical LED screen correction system according to an embodiment of the present invention;
fig. 5 is a structural composition diagram of an electronic device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The spherical LED screen correction method provided by the embodiment of the invention, as shown in FIG. 1, comprises the following steps:
step S10: a corrected image of the spherical LED screen is acquired.
In this embodiment, the spherical LED screen is composed of screen light points, and the correction image is composed of image light points. The present embodiment may correct the entire spherical LED screen, or may correct a part of the modules, which is selected according to the situation, and is not limited specifically here.
The corrected image in the present embodiment is obtained by shooting with a camera. For later-stage screen correction, the camera is placed at the center of the sphere of the LED screen in the embodiment, the position is suitable for the condition that the lamp points of the spherical LED screen are located on the inner side, when the lamp points of the spherical LED screen are located on the outer side, the camera can be placed to be as high as the center of the sphere, and the space between the camera and the spherical LED screen is adjusted to enable the area occupied by the background in the camera picture to be as small as possible and the area occupied by the screen to be as large as possible, so that the image lamp points in the corrected image are enabled to be clearer.
When the camera cannot collect the image of the module to be corrected at one position, the position needs to be changed for collecting for multiple times, and then the collected images are spliced according to the collecting position to obtain the corrected image.
Step S20: and determining the positions of the image lamp points according to the corrected images, and corresponding the image lamp points to the screen lamp points according to the positions of the image lamp points.
The step processes the correction image, and because the LED screen lamp points have specific display contents during the acquisition of the correction image, the position of each image lamp point in the correction image, namely the coordinates of the image lamp points in the correction image can be determined by performing image recognition processing on the correction image. And after the positions of all image lamp points in the corrected image are determined, the screen lamp points in the spherical LED screen are in one-to-one correspondence with the screen lamp points.
Step S30: and extracting the light point brightness value of each image light point.
The LED screen light points have specific display contents when the correction image is collected, so the image light points in the correction image have respective light point brightness values.
Step S40: and calculating an original correction coefficient of the screen light point according to the light point brightness value and a preset target brightness value.
The raw correction coefficients for this step are calculated in the prior art manner, i.e. by: and calculating the original correction coefficient of the screen light point in a mode of the original correction coefficient = target brightness value/light point brightness value.
Step S50: and calculating the density gradient coefficient of the screen light points according to a preset density gradient coefficient calculation strategy and the distance between the image light points.
Specifically, as shown in fig. 2, the density gradient coefficient calculation strategy in this embodiment includes the steps of:
step S501: and calculating a corresponding lamp point distance value for each image lamp point according to a preset lamp point distance calculation strategy.
In the embodiment of the present invention, the calculation of the lamp point distance value may include various values. For example, the lamp point distance calculation strategy includes:
calculating the distance between two adjacent lamp points according to the positions of the two adjacent lamp points in each row, and for non-edge lamp points, obtaining the distance values between the lamp point and the left and right lamp points and calculating the average value as the lamp point distance value of the image lamp point; and for the edge lamp point, acquiring the distance value between the lamp point and the left or right lamp point as the lamp point distance value of the lamp point.
Since the positions of all the image light points have been determined in step S20, the distance between the adjacent image light points can be calculated. When one image lamp point is selected 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 firstly, and then the average value of the two distance values is calculated to be used as the lamp point distance value of the image lamp point; in the row where the image light point is located, if the image light point is an edge light point, only the left or right adjacent image light point exists, so that the distance value between the image light point and the left or right image light point is obtained and directly used as the light point distance value of the image light point.
In another embodiment, the lamp point distance calculation strategy may include:
calculating the distance between the adjacent lamp points according to the positions of the two adjacent lamp points in each row; for non-edge lamp points, obtaining the distance values between the lamp points and the upper side lamp points and the lower side lamp points and calculating an average value as the lamp point distance value of the lamp points; and for the edge lamp point, acquiring the distance value between the lamp point and the upper or lower lamp point as the lamp point distance value of the lamp point.
In contrast to the previous embodiment, this embodiment uses "rows" to determine the neighboring lamp points, and for the non-edge image lamp points, there are two neighboring lamp points in the same row, and the lamp point distance value of the image lamp point is also calculated by averaging, and for the edge image lamp points, the distance from the neighboring image lamp point is directly used as the lamp point distance value.
In yet another embodiment, the lamp distance calculation strategy comprises:
calculating the distance value between each lamp point and the adjacent lamp points above, below, on the left side and on the right side; and calculating the average value of the distance values related to the lamp points to serve as the lamp point distance value of the lamp points. In this way, the image light points at the vertex position include two adjacent image light points, the image light points at the edge non-vertex position include three adjacent image light points, the image light points at the non-edge position include four adjacent image light points, and the light point distance values corresponding to the image light points are determined by averaging.
The three implementation modes included in the lamp point distance calculation strategy can be used for implementation, and a person skilled in the art can select the angle according to the curved surface of the spherical LED screen.
Step S502: and generating a density gradient coefficient according to the lamp point distance value and the set standard distance value.
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 method can be as follows: density gradient coefficient = lamp spot distance value/standard distance value. The standard distance value in this embodiment may be set according to an empirical value, or may be selected from a maximum value among all the lamp point distance values as the standard distance value.
And after the density gradient coefficient of the screen lamp points is calculated through the steps, the subsequent steps are executed.
Step S60: and generating a screen correction coefficient according to the original correction coefficient and the density gradient coefficient.
The screen correction coefficient in this embodiment is calculated as follows: screen correction coefficient = density gradient coefficient original correction coefficient. Since the image light points and the screen light points are already in one-to-one correspondence in step S20, the screen correction coefficient in this step is calculated by combining the light point brightness values and the light point distance values of the corresponding image light points by the above method.
And calculating a screen correction coefficient by the method, and correcting the spherical LED screen to be corrected.
Because the shape of the spherical LED screen is obviously different from that of a plane screen and an arc screen, and the distribution of the screen light points of the spherical LED screen is also special compared with that of the screen light points on the plane screen and the arc screen, the correction mode for the plane screen and the arc screen in the prior art is not suitable for the spherical LED screen. The embodiment of the invention fully considers the factor of the arrangement of the lamp points in the spherical LED screen, generates the final screen correction coefficient by combining the density gradient coefficient calculated by the distance between the image lamp points and the original correction coefficient, can eliminate the influence of the screen gradient, and thus realizes the purpose of correcting the spherical LED screen. It should be noted that the correction method of the embodiment of the present invention can not only correct the spherical LED screen, but also be applied to the correction of the flat screen and the arc screen, and the distance between the image light points is taken as a factor to be considered for the screen correction, thereby further improving the correction effect on the basis of the existing flat screen and arc screen correction technology.
The invention further comprises an embodiment which is a spherical LED screen correcting device, wherein the spherical LED screen consists of screen lamp points. As shown in fig. 3, the correction device 100 includes a corrected image acquisition module 101, a lighting point determination module 102, a brightness acquisition module 103, a density gradient coefficient calculation module 104, and a correction coefficient calculation module 105, wherein:
the corrected image acquisition module 101 is connected with the light point determination module 102, and the corrected image acquisition module 101 is used for acquiring a corrected image of the spherical LED screen; the correction image is composed of image light points;
the light point determining module 102 is connected with the corrected image obtaining module 101, the brightness obtaining module 103 and the density gradient coefficient calculating module 104, and the light point determining module 102 is used for determining the positions of the image light points according to the corrected image and corresponding the image light points with the screen light points according to the positions of the image light points;
the brightness acquisition module 103 is connected with the light point determination module 102 and the correction coefficient calculation module 105, and the brightness acquisition module 103 is used for extracting the light point brightness value of each image light point;
the density gradient coefficient calculation module 104 is connected with the light point determination module 102 and the correction coefficient calculation module 105, and the density gradient coefficient calculation module 104 is used for calculating the density gradient coefficient of the screen light points according to a preset density gradient coefficient calculation strategy and the distance between the image light points;
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 configured to calculate an original correction coefficient of the screen light point according to the light point brightness value and a preset target brightness value; and generating a screen correction coefficient according to the original correction coefficient and the density gradient coefficient.
The density gradient coefficient calculation strategy in the embodiment of the invention comprises the following steps: calculating a corresponding lamp point distance value for each image lamp point according to a preset lamp point distance calculation strategy; and generating a density gradient coefficient according to the lamp point distance value and the set standard distance value.
The function of the spherical LED screen correction device provided by the embodiment of the invention can be realized by referring to the following steps:
step S10: a corrected image of the spherical LED screen is acquired.
Step S20: and determining the positions of the image lamp points according to the corrected images, and corresponding the image lamp points to the screen lamp points according to the positions of the image lamp points.
Step S30: and extracting the light point brightness value of each image light point.
Step S40: and calculating an original correction coefficient of the screen light point according to the light point brightness value and a preset target brightness value.
Step S50: and calculating the density gradient coefficient of the screen light points according to a preset density gradient coefficient calculation strategy and the distance between the image light points.
The density gradient coefficient calculation strategy comprises the following steps:
step S501: and calculating a corresponding lamp point distance value for each image lamp point according to a preset lamp point distance calculation strategy.
Step S502: and generating a density gradient coefficient according to the lamp point distance value and the set standard distance value.
Step S60: and calculating and generating a screen correction coefficient according to the original correction coefficient and the density gradient coefficient.
The specific implementation process and description of the above steps can be implemented by referring to the aforementioned embodiments of the spherical LED screen correction method of the present invention, and are not described herein again.
The embodiment of the present invention further includes a spherical LED screen calibration system, as shown in fig. 4, which includes the calibration apparatus 100 of the above embodiment, and further includes a camera 200, wherein the camera 200 is in communication connection with the calibration apparatus 100, and the camera 200 is used for acquiring a calibration image. The camera 200 of the present embodiment is used for acquiring a correction image, and those skilled in the art may select an appropriate camera model, and the product parameters of the camera are not limited herein.
The embodiment of the present invention further includes an electronic device 300, as shown in fig. 5, including: a memory 301 for storing a computer program; a processor 302 for implementing the spherical LED screen correction method of the above embodiments when executing the computer program. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The memory may include at least: any entity or device capable of carrying computer program code to a photographing apparatus/terminal apparatus, a recording medium, computer memory, read-only memory (ROM), random Access Memory (RAM), such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc.
According to the spherical LED screen correction method, the device, the system and the electronic equipment, after an original correction coefficient is calculated by correcting the lamp point brightness value of an image lamp point in an image, the density gradient coefficient of the screen lamp point is calculated according to a preset density gradient coefficient calculation strategy and the distance between the image lamp points, finally, the screen correction coefficient is generated according to the original correction coefficient and the density gradient coefficient, the spherical LED screen is corrected by adopting the screen correction coefficient, the influence of the gradient of the spherical LED screen is eliminated, the brightness effect among modules is unified, the brightness difference among the modules is eliminated, and the method replaces the manual adjustment mode in the prior art, so that the correction of a technician on the spherical LED screen is quicker and more convenient, and the maintenance cost of the spherical LED screen is reduced; meanwhile, the invention can also be used for correcting the arc LED screen and has better correction effect.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (10)
1. A spherical LED screen correction method is characterized in that the spherical LED screen is composed of screen lamp points, and the method comprises the following steps:
acquiring a corrected image of the spherical LED screen; the correction image is composed of image light points;
determining the positions of the image lamp points according to the correction image, and corresponding the image lamp points to the screen lamp points according to the positions of the image lamp points;
extracting a light point brightness value of each image light point;
calculating an original correction coefficient of the screen lamp point according to the lamp point brightness value and a preset target brightness value;
calculating the density gradient coefficient of the screen light points according to a preset density gradient coefficient calculation strategy and the distance between the image light points;
and generating a screen correction coefficient according to the original correction coefficient and the density gradient coefficient.
2. The spherical LED screen correction method according to claim 1, wherein 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;
and generating the density gradient coefficient according to the lamp point distance value and a set standard distance value.
3. The spherical LED screen correction method of claim 2, wherein said lamp spot distance calculation strategy comprises:
calculating the distance between the adjacent lamp points according to the positions of the adjacent two lamp points in each row;
for non-edge lamp points, obtaining the distance values between the lamp point and the left and right lamp points and calculating the average value as the lamp point distance value of the lamp point; and for the edge lamp point, acquiring the distance value between the lamp point and the left or right lamp point as the lamp point distance value of the lamp point.
4. The spherical LED screen correction method of claim 2, wherein said lamp spot distance calculation strategy comprises:
calculating the distance between the adjacent lamp points according to the positions of the two adjacent lamp points in each row;
for non-edge lamp points, obtaining the distance values between the lamp points and the upper side lamp points and the lower side lamp points and calculating an average value as the lamp point distance value of the lamp points; and for the edge lamp point, acquiring the distance value between the lamp point and the upper or lower lamp point as the lamp point distance value of the lamp point.
5. The spherical LED screen correction method of claim 2, wherein the lamp spot distance calculation strategy comprises:
calculating the distance value between each lamp point and the adjacent lamp points above, below, on the left side and on the right side;
and calculating the average value of the distance values related to the lamp points as the lamp point distance value of the lamp points.
6. The spherical LED screen correction method according to claim 2, wherein the standard distance value is selected from the maximum of all the lamp point distance values.
7. The spherical LED screen correction method according to claim 2,
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.
8. The spherical LED screen correcting device is characterized in that the spherical LED screen consists of screen lamp points, and the correcting device comprises a corrected 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 is used for acquiring a correction image of the spherical LED screen; the correction image consists of image light points;
the light point determining module is connected with the corrected image acquiring module, the brightness acquiring module and the density gradient coefficient calculating module, and is used for determining the positions of the image light points according to the corrected image and corresponding the image light points and the screen light points according to the positions of the image light points;
the brightness acquisition module is connected with the lamp point determination module and the correction coefficient calculation module and is used for extracting the lamp point brightness value of each image lamp point;
the density gradient coefficient calculation module is connected with the light point determination module and the correction coefficient calculation module, and is used for calculating the density gradient coefficient of the screen light points according to a preset density gradient coefficient calculation strategy and the distance between the image light points;
the correction coefficient calculation module is connected with the brightness acquisition module and the density gradient coefficient calculation module, and is used for calculating an original correction coefficient of the screen lamp point according to the lamp point brightness value and a preset target brightness value; and generating a screen correction coefficient according to the original correction coefficient and the density gradient coefficient.
9. A spherical LED screen correction system, comprising the spherical LED screen correction device of claim 8, further comprising a camera, said camera being in communication with said correction device, said camera being adapted to acquire said corrected image.
10. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the spherical LED screen correction method according to any one of claims 1 to 7 when executing the computer program.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115862530A (en) * | 2023-03-02 | 2023-03-28 | 长春希达电子技术有限公司 | Correction method and device for special-shaped LED screen, electronic equipment and storage medium |
| CN115995208A (en) * | 2023-03-23 | 2023-04-21 | 长春希达电子技术有限公司 | Lamp positioning method, correction method and device for spherical LED display screen |
| CN116386520A (en) * | 2023-05-29 | 2023-07-04 | 长春希达电子技术有限公司 | Spherical inner display screen correction method and device, electronic equipment and storage medium |
-
2022
- 2022-10-18 CN CN202211273009.0A patent/CN115578970A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115862530A (en) * | 2023-03-02 | 2023-03-28 | 长春希达电子技术有限公司 | Correction method and device for special-shaped LED screen, electronic equipment and storage medium |
| CN115862530B (en) * | 2023-03-02 | 2023-06-16 | 长春希达电子技术有限公司 | Correction method and device for special-shaped LED screen, electronic equipment and storage medium |
| CN115995208A (en) * | 2023-03-23 | 2023-04-21 | 长春希达电子技术有限公司 | Lamp positioning method, correction method and device for spherical LED display screen |
| CN115995208B (en) * | 2023-03-23 | 2023-06-16 | 长春希达电子技术有限公司 | Lamp positioning method, correction method and device for spherical LED display screen |
| CN116386520A (en) * | 2023-05-29 | 2023-07-04 | 长春希达电子技术有限公司 | Spherical inner display screen correction method and device, electronic equipment and storage medium |
| CN116386520B (en) * | 2023-05-29 | 2023-09-19 | 长春希达电子技术有限公司 | Spherical inner display screen correction method and device, electronic equipment and storage medium |
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