WO2019134317A1 - Led显示屏的整屏校正方法、校正***及存储介质 - Google Patents

Led显示屏的整屏校正方法、校正***及存储介质 Download PDF

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Publication number
WO2019134317A1
WO2019134317A1 PCT/CN2018/085948 CN2018085948W WO2019134317A1 WO 2019134317 A1 WO2019134317 A1 WO 2019134317A1 CN 2018085948 W CN2018085948 W CN 2018085948W WO 2019134317 A1 WO2019134317 A1 WO 2019134317A1
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Prior art keywords
correction
led display
corrected
screen
pixel
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PCT/CN2018/085948
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English (en)
French (fr)
Inventor
谢明璞
严振航
孙兴红
李选中
吴振志
吴涵渠
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深圳市奥拓电子股份有限公司
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Publication of WO2019134317A1 publication Critical patent/WO2019134317A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • 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
    • G09G3/20—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
    • G09G3/22—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
    • G09G3/30—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
    • 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]

Definitions

  • the present invention relates to the field of display screen correction, and in particular, to a full screen correction method, a calibration system, and a storage medium for an LED display screen.
  • a large-area LED display screen is formed by splicing a plurality of small LH) modules, and a single LED module is factory-corrected at the time of shipment, but the entire screen formed after splicing may cause a whole due to splicing error.
  • the brightness of the screen is not uniform. Therefore, it is necessary to perform secondary correction on the entire screen after the splicing is completed.
  • the existing correction method generally uses a professional camera to perform brightness and color gamut analysis on all LED pixel lamps on the LED screen body, and obtains correction coefficients of all points, and then applies the correction coefficient to the screen body.
  • professional intersections are expensive and inconvenient to use, resulting in higher calibration costs.
  • a first aspect of the present invention provides a method for correcting a full screen of an LED display screen, the method comprising the following steps
  • the correction coefficient is used for the LED display screen for full screen correction.
  • the obtaining spatial uniformity parameters of the boundary pixel points includes:
  • one of the four quadrilaterals formed by the corrected pixel points is parallel to the edge line of the LED module.
  • the pixel matrix spatial uniformity parameter between the LED modules is obtained according to a preset algorithm, and the correction coefficients are:
  • the correction coefficient is calculated according to the pixel pitch D in the module and the distances D1, D2, D3 and D4 between the boundary pixel and the four corrected pixel points.
  • the pixel spacing D in the module of the LED module where the boundary pixel is located includes:
  • the distances D1, D2, D3, and D4 between the boundary pixel point and the four corrected pixel points are directly obtained by image analysis; or
  • the distances D1, D2, D3, and D4 between the boundary pixel point and the four corrected pixel points are obtained by correcting the distance value between the boundary pixel point and the four corrected pixel points obtained by image analysis.
  • the correcting the distance value between the boundary pixel point and the four corrected pixel points obtained by the image analysis comprises: selecting a boundary pixel and four corrected pixels according to the image analysis. The proximity of the distance values between the points is corrected.
  • a second aspect of the present invention provides a full screen correction system for an LED display screen, including:
  • an acquiring component configured to acquire a full screen image of the LED display screen
  • an image analyzing component configured to determine a boundary pixel point of the LED module according to the acquired full screen image, and obtain a spatial uniformity parameter of the boundary pixel
  • the image analysis component includes:
  • a position obtaining component configured to acquire position information of the boundary pixel, and determine a position of the four corrected pixel points adjacent to the boundary pixel according to the position information of the pixel;
  • a calculation component configured to calculate a distance between the boundary pixel and the four corrected pixels, D1, D2, D3, and
  • a third aspect of the invention provides a machine readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements full screen correction of the LED display screen according to any of the above method.
  • the above-mentioned LED screen display full-screen correction method, correction system and storage medium calculate the correction coefficient based on spatial uniformity, instead of the prior art calculation of the correction coefficient based on optical uniformity, since the analysis of spatial uniformity only needs to be clear
  • the physical position of the LED lights so that a normal camera or mobile phone can act as a calibration camera, reducing the cost of the calibration device.
  • the pixels in the LED module have been optically corrected at the factory, the brightness of the pixels in the LED module is relatively uniform. Therefore, the above correction method is performed only by the boundary of the LED module. , greatly reducing the amount of data analysis, thereby improving the speed of correction.
  • the correction coefficient is calculated based on the spatial uniformity, the correction can be performed even when the LED display is normally displayed, and the LED display screen is not required to display a specific corrected image (for example, a red, green, and blue solid image), real-time correction is realized. .
  • FIG. 1 is a flow chart of a method for correcting a whole screen of an LED display screen according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for correcting a whole screen of an LED display screen according to still another embodiment of the present invention
  • FIG. 3 is a schematic view showing a splicing structure of an LED display screen
  • FIG. 4 is a flowchart of a method for correcting a whole screen of an LED display screen according to still another embodiment of the present invention.
  • FIG. 5 is a structural diagram of a frame of a full screen correction system for an LED display screen according to an embodiment of the present invention.
  • 1 is a flow chart showing a method for correcting a whole screen of an LED display screen according to an embodiment of the present invention, wherein the whole screen correction method of the LED display screen is applied to an LED display screen formed by splicing a plurality of LED modules.
  • the correction in particular, is suitable for the correction of the LED display formed by the splicing of the LED module with good optical uniformity in the module, and the correction effect is good.
  • the method for correcting the entire screen of the LED display screen comprises the following steps:
  • S102 Acquire a full screen image of the LED display screen.
  • the full screen image of the LED display screen can be acquired by a cell phone or a conventional camera.
  • the images obtained by the professional camera are clearer, which is advantageous for the analysis of the image, so that the obtained parameters are more accurate, and the accuracy of the correction coefficient can be improved.
  • the LED display In order to facilitate image analysis of a full screen image, the LED display The larger the area ratio of the screen in the whole screen image, the better the image analysis. Ideally, the four corners of the photo captured by the camera overlap with at least two of the four corners of the front view image of the LED display.
  • S104 Determine a boundary pixel point of the LED module according to the acquired full screen image, and obtain a spatial uniformity parameter of the boundary pixel.
  • the LED display screen is formed by splicing a plurality of LED modules, so that a row or column of LEDs adjacent to the junction of the LED module and the adjacent LED module are at the junction with the adjacent LED module. There is a splicing line between the adjacent row or column of LEDs.
  • the image analysis software can easily identify the splicing line, and then identify the boundary pixel points of each LED module, and obtain the spatial uniformity parameter corresponding to each boundary pixel. After that, the correction coefficient when the boundary pixel is corrected for the entire screen can be calculated.
  • the position of the boundary pixel point can be determined, and after obtaining the spatial uniformity parameter corresponding to the boundary pixel point, the corresponding correction coefficient can be calculated, that is, the obtained whole
  • the screen image can clearly identify the position of the splicing line, it is not necessary to analyze the brightness uniformity of all the LEDs of the LED display. Therefore, as long as the ordinary camera or even the mobile phone is used to take a full-screen image obtained by photographing, Satisfying the above conditions, compared with the prior art using a professional camera, greatly reduces the cost of the calibration device, and the convenience of operation.
  • the control system of the calibration camera and the LED display screen is connected by wireless communication.
  • the correction camera captures the entire screen image of the LED display screen
  • the entire screen image is wirelessly transmitted to complete the screen.
  • the image is transmitted to the control system of the LED display screen.
  • the control system recognizes the boundary pixel points in the image, and then obtains a set of correction coefficients.
  • the wireless communication connection may be a WLA N connection or a Bluetooth connection. Of course, other wireless connection modes may also be used, and no specific limitation is imposed herein.
  • the obtaining spatial uniformity parameters of the boundary pixel points includes:
  • S1041 Acquire location information of a boundary pixel point
  • S1043 determining, according to position information of the pixel point, positions of four corrected pixel points adjacent to the boundary pixel point;
  • FIG. 3 exemplarily shows a partial full-screen image.
  • the information of the boundary pixel points can be determined according to the stitching line, and four corrected pixel points are determined according to the position of the boundary pixel points.
  • One of the diagonals of the quadrilateral formed by the corrected pixel is parallel to the edge line of the LED module.
  • the distances D1, D2, D3, and D4 between the four corrected pixel points and the corresponding boundary pixel points are respectively calculated, that is, the spatial uniformity parameter of the boundary pixel points is obtained.
  • the edge lines of the two spliced LED modules are parallel to each other, so that the diagonal lines of the quadrilateral formed by the four corrected pixels are perpendicular to each other, and the focal point of the diagonal is the boundary pixel. .
  • the distances D1, D2, D3, and D4 between the boundary pixel points and the four corrected pixel points are directly obtained by image analysis. After analyzing the whole screen image, the distance between the boundary pixel and the four corrected pixels can be obtained, and the distance value is directly substituted into the preset algorithm, and the correction coefficient corresponding to the boundary pixel can be obtained.
  • the distances D1, D2, D3, and D4 between the boundary pixel and the four corrected pixel points are between the boundary pixel points and the four corrected pixel points obtained by image analysis.
  • the distance value is corrected.
  • the camera When a camera is manually operated to correct a camera (such as a mobile phone), the camera may have a certain tilt, which causes the boundary pixels to deviate from the distances D1, D2, D3, and D4 between the four corrected pixels. Therefore, it is necessary to The distance between the boundary pixel obtained by the image analysis and the four corrected pixels is corrected, thereby obtaining more accurate spatial uniformity parameters D1, D2, D3 and D4.
  • the correcting the distance value between the boundary pixel point and the four corrected pixel points obtained by the image analysis specifically includes: correcting boundary pixel points and four according to image analysis The closeness of the distance value between the pixels is corrected.
  • the distance between a specific boundary pixel and the four corrected pixel points is determined, and at least two of the four boundary pixel points are in the same LED module as the boundary pixel point. Therefore, at least two of the distance values between a specific boundary pixel and the four corrected pixels are equal, and are equal to the pixel pitch D in the LED module where the boundary pixel is located, and thus, obtained from image analysis. At least two relatively similar values may be determined in the distance value between the boundary pixel and the four corrected pixel points, and the offset direction and angle of the corrected camera are determined according to the determined similar values, thereby obtaining boundary pixels for image analysis. The point is corrected for the distance between the four corrected pixels.
  • S106 obtaining a correction coefficient according to a preset algorithm by a pixel lattice uniformity parameter between the LED modules.
  • the pixel matrix spatial uniformity parameter between the LED modules is obtained according to a preset algorithm, and the correction coefficients are:
  • S1061 Obtain a pixel spacing D in the module of the LED module where the boundary pixel is located.
  • the intra-module pixel pitch D of the LH) module is determined at the factory. Therefore, in some embodiments, the pixel pitch D in the module of the LED module where the boundary pixel is located can be directly read. Of course, in some other embodiments, image analysis can also be performed to calculate the pixel pitch in the module of the LED module where the boundary pixel is located.
  • D2, D3 and D4 calculate the correction factor.
  • the preset algorithm is:
  • the corresponding correction coefficient may be calculated according to the foregoing preset algorithm, and after calculating all the boundary relativism, a set of correction coefficients are obtained, and the correction coefficient is applied to the LED display screen. A full screen correction of the LED display can be achieved.
  • the above-mentioned full screen correction method of the LED display screen calculates the correction coefficient based on the spatial uniformity instead of the prior art calculation of the correction coefficient based on the optical uniformity, and only needs to clarify the physical position of each LED lamp due to the analysis of the spatial uniformity. Therefore, a normal camera or a mobile phone can serve as a correction camera, which reduces the cost of the calibration device.
  • a normal camera or a mobile phone can serve as a correction camera, which reduces the cost of the calibration device.
  • the above correction method is performed only for the boundary of the LED module. Analysis greatly reduces the amount of data analysis, which improves the speed of calibration.
  • the correction coefficient is calculated based on the spatial uniformity, the correction can be performed even when the LED display is normally displayed, and the LED display screen is not required to display a specific corrected image (for example, a red, green, and blue solid image), real-time correction is realized. .
  • an embodiment of the present invention further provides a full screen correction system 10 for an LED display screen, including an acquisition component 110, an image analysis component 120, and a calculation component 130.
  • the full screen correction system of the LED display can be a complete device or a component of a large system.
  • the acquiring component 110 is configured to acquire a full screen image of the LED display screen.
  • the acquiring component 110 is configured to acquire a full screen image of the LED display screen.
  • the full screen image of the LED display screen can be acquired by a cell phone or a normal camera.
  • the images obtained by the professional camera are clearer, which is advantageous for the analysis of the image, so that the obtained parameters are more accurate, and the accuracy of the correction coefficient can be improved.
  • the image analyzing component 120 is configured to determine a boundary pixel point of the LED module according to the acquired full screen image, and obtain a spatial uniformity parameter of the boundary pixel point;
  • the LED display screen is formed by splicing a plurality of LED modules, so that a row or column of LEDs adjacent to the junction of the LED module and the adjacent LED module are at the junction with the adjacent LED module. There is a splicing line between the adjacent row or column of LEDs.
  • the image analysis software can easily identify the splicing line, and then identify the boundary pixel points of each LED module, and obtain the spatial uniformity parameter corresponding to each boundary pixel. After that, the correction coefficient when the boundary pixel is corrected for the entire screen can be calculated.
  • the position of the boundary pixel point can be determined, and after obtaining the spatial uniformity parameter corresponding to the boundary pixel point, the corresponding correction coefficient can be calculated, that is, the obtained whole
  • the screen image can clearly identify the position of the splicing line, it is not necessary to analyze the brightness uniformity of all the LEDs of the LED display. Therefore, as long as the ordinary camera or even the mobile phone is used to take a full-screen image obtained by photographing, Satisfying the above conditions, compared with the prior art using a professional camera, greatly reduces the cost of the calibration device, and the convenience of operation.
  • the control system of the calibration camera and the LED display screen is connected by wireless communication.
  • the calibration camera captures the entire screen image of the LED display screen
  • the entire screen image is wirelessly transmitted to complete the screen.
  • the image is transmitted to the control system of the LED display screen.
  • the control system recognizes the boundary pixel points in the image, and then obtains a set of correction coefficients.
  • the wireless communication connection may be a WLA N connection or a Bluetooth connection. Of course, other wireless connection methods may also be used, and no specific limitation is imposed herein. System.
  • the image analysis component 120 includes:
  • a position obtaining component 121 configured to acquire position information of a boundary pixel, and determine a position of four corrected pixel points adjacent to the boundary pixel according to position information of the pixel;
  • the measuring component 123 is configured to calculate distances D1, D2, D3, and D4 between the boundary pixel and the four corrected pixels.
  • the information of the boundary pixel points can be determined according to the splicing line, and four corrected pixel points are determined according to the position of the boundary pixel point, and one of the four quadrilaterals formed by the corrected pixel points is parallel to the LED module.
  • the edge line After determining the four corrected pixel points, the distances D1, D2, D3, and D4 between the four corrected pixel points and the corresponding boundary pixel points are respectively calculated, that is, the spatial uniformity parameter of the boundary pixel points is obtained.
  • the edge lines of the two spliced LED modules are parallel to each other, so that the diagonal lines of the quadrilateral formed by the four corrected pixels are perpendicular to each other, and the focal point of the diagonal is the boundary pixel.
  • the distances D1, D2, D3, and D4 between the boundary pixel points and the four corrected pixel points are directly obtained by image analysis. After analyzing the whole screen image, the distance between the boundary pixel and the four corrected pixels can be obtained, and the distance value is directly substituted into the preset algorithm, and the correction coefficient corresponding to the boundary pixel can be obtained.
  • the distances D1, D2, D3, and D4 between the boundary pixel and the four corrected pixel points are between the boundary pixel points and the four corrected pixel points obtained by image analysis.
  • the distance value is corrected.
  • the camera When a camera is manually operated to correct a camera (such as a mobile phone), the camera may have a certain tilt, which causes the boundary pixels to deviate from the distances D1, D2, D3, and D4 between the four corrected pixels. Therefore, it is necessary to The distance between the boundary pixel obtained by the image analysis and the four corrected pixels is corrected, thereby obtaining more accurate spatial uniformity parameters D1, D2, D3 and D4.
  • the correcting the distance value between the boundary pixel point and the four corrected pixel points obtained by the image analysis specifically includes: correcting boundary pixel points and four according to image analysis The closeness of the distance value between the pixels is corrected.
  • the distance between a specific boundary pixel and the four corrected pixel points is determined, and three of the four boundary pixel points are in the same LED module as the boundary pixel point,
  • a special Three of the distance values between the fixed boundary pixel and the four corrected pixel points are equal and equal to the pixel pitch D in the LED module where the boundary pixel is located. Therefore, the boundary pixel points and image values obtained from the image analysis are Three relatively close values can be determined from the distance values between the corrected pixels, and the offset direction and angle of the corrected camera are determined according to the determined three similar values, thereby obtaining boundary pixel points and four for image analysis. Correct the distance value between the pixels.
  • the calculating component 130 is configured to obtain a correction coefficient according to a preset algorithm.
  • the preset algorithm is:
  • D is a pixel spacing within the module of the LED module where the boundary pixel is located.
  • the intra-module pixel pitch D of the LH) module is determined at the time of shipment. Therefore, in some embodiments, the pixel pitch D in the module of the LED module in which the boundary pixel is located can be directly read. Of course, in some other embodiments, image analysis can also be performed to calculate the pixel pitch D in the module of the LED module where the boundary pixel is located.
  • the corresponding correction coefficient may be calculated according to the foregoing preset algorithm, and after calculating all the boundary relativism, a set of correction coefficients are obtained, and the correction coefficient is applied to the LED display screen. A full screen correction of the LED display can be achieved.
  • the above-mentioned full screen correction system 10 of the LED display screen calculates the correction coefficient based on the spatial uniformity, instead of calculating the correction coefficient based on the optical uniformity in the prior art, since it is only necessary to clarify the physicality of each LED lamp due to the analysis of the spatial uniformity. Position, so a normal camera or mobile phone can act as a correction camera, reducing the cost of the calibration device.
  • the pixels in the LED module have been optically corrected at the factory, the brightness of the pixels in the LED module is relatively uniform. Therefore, the above correction method is performed only by the boundary of the LED module. , greatly reducing the amount of data analysis, thereby improving the speed of correction.
  • the correction coefficient is calculated based on the spatial uniformity, the correction can be performed even when the LED display is normally displayed, and the LED display screen is not required to display a specific corrected image (for example, a red, green, and blue solid image), real-time correction is realized. .
  • An embodiment of the present invention further provides a machine readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the LED display screen of any of the above embodiments. Screen correction method.
  • the integrated screen correction system 10/computer device integrated component/module/unit of the LED display screen can be stored in a computer readable if it is implemented in the form of a software functional unit and sold or used as a standalone product. In the storage medium. Based on such understanding, the present invention implements all or part of the processes in the foregoing embodiments, and may also be completed by a computer program to instruct related hardware.
  • the computer program may be stored in a computer readable storage medium.
  • the steps of the various method embodiments described above may be implemented when the computer program is executed by the processor.
  • the computer program includes computer program code, and the computer program code may be in a source code form, an object code form, an executable file, or some intermediate form.
  • the computer readable storage medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read only memory (ROM, Read-Only)
  • Computer readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in a jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, computer readable media Does not include electrical carrier signals and telecommunication signals
  • each functional module in each embodiment of the present invention may be integrated in the same processing module, or each module may exist physically separately, or two or more modules may be integrated in the same module.
  • the above integrated modules can be implemented in the form of hardware or in the form of hardware plus software function modules.

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Abstract

一种LED显示屏的整屏校正方法、校正***及存储介质。校正方法包括以下步骤：获取LED显示屏的整屏图像（S102）；根据获取的整屏图像确定LED模组的边界像素点，并获取边界像素点的空间均匀性参数（S104）；由LED模组间的像素点阵空间均匀性参数根据预设算法得到校正系数（S106）；将校正系数用于LED显示屏进行整屏校正（S108）。LED显示屏的整屏校正方法、校正***及存储介质，基于空间均匀性计算校正系数，使用普通相机或手机即可进行校正，降低了校正成本，且大大减少了数据分析量，可以进行实时校正，而无需显示特定的校正图像。

Description

LED显示屏的整屏校正方法、 校正***及存储介质 技术领域
[0001] 本发明涉及显示屏校正领域， 特别是涉及一种 LED显示屏的整屏校正方法、 校 正***及存储介质。
背景技术
[0002] 通常， 大面积的 LED显示屏由若干个小的 LH）模组拼接形成， 单个 LED模组在 出厂时会进行出厂校正， 但是， 拼接后形成的整屏， 由于拼接误差会造成整屏 的亮度不均匀， 因此， 需要在拼接完成后， 对整屏进行二次校正。
[0003] 现有的校正方法， 通常是使用专业相机对 LED屏体上所有 LED像素灯进行亮度 及色域分析， 得出所有点的校正系数， 再将此校正系数应用到屏体上。 然而， 专业相交较为昂贵， 使用不方便， 从而使得校正成本较高。
发明概述
技术问题
问题的解决方案
技术解决方案
[0004] 基于此， 有必要针对 LED显示屏的二次校正的校正成本高的问题， 提供一种 LE D显示屏的整屏校正方法、 校正***及存储介质。
[0005] 本发明第一方面提供一种 LED显示屏的整屏校正方法， 所述方法包括以下步骤
[0006] 获取 LED显示屏的整屏图像；
[0007] 根据获取的整屏图像确定 LED模组的边界像素点， 并获取边界像素点的空间均 匀性参数；
[0008] 由 LED模组间的像素点阵空间均匀性参数根据预设算法得到校正系数；
[0009] 将所述校正系数用于 LED显示屏进行整屏校正。
[0010] 在其中一个实施例中， 所述获取边界像素点的空间均匀性参数包括：
[0011] 获取边界像素点的位置信息； [0012] 根据像素点的位置信息确定与所述边界像素点相邻的四个校正像素点的位置； [0013] 基于图像分析计算边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3和 D4
[0014] 其中， 四个所述校正像素点构成的四边形的其中一条对角线平行于 LED模组的 边缘线。
[0015] 在其中一个实施例中， 所述由 LED模组间的像素点阵空间均匀性参数根据预设 算法得到校正系数包括：
[0016] 获取边界像素点所在 LED模组的模组内像素间距 D ;
[0017] 根据模组内像素间距 D及边界像素点与四个校正像素点之间的距离 Dl、 D2、 D 3和 D4计算得到校正系数。
[0018] 在其中一个实施例中， 所述获取边界像素点所在 LED模组的模组内像素间距 D 包括：
[0019] 基于图像分析计算边界像素点所在 LED模组的模组内像素间距 D; 或
[0020] 读取预设的模组内像素间距 D。
[0021] 在其中一个实施例中， 所述边界像素点与四个校正像素点之间的距离 Dl、 D2 、 D3和 D4直接由图像分析得到； 或
[0022] 所述边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3和 D4由对图像分析 得到的边界像素点与四个校正像素点之间的距离值校正后得到。
[0023] 在其中一个实施例中， 所述对图像分析得到的边界像素点与四个校正像素点之 间的距离值的校正具体包括： 根据对图像分析得到的边界像素点与四个校正像 素点之间的距离值的相近度进行校正。
[0024] 在其中一个实施例中， 所述预设算法为： 校正系数 =(D1+D2)*(D3+D4) /
(4*D*D)。
[0025] 本发明第二方面提供一种 LED显示屏的整屏校正***， 包括：
[0026] 获取部件， 用于获取 LED显示屏的整屏图像；
[0027] 图像分析部件， 用于根据获取的整屏图像确定 LED模组的边界像素点， 并获取 边界像素点的空间均匀性参数； 及
[0028] 计算部件， 用于根据预设算法得到校正系数。 [0029] 在其中一个实施例中， 所述图像分析部件包括：
[0030] 位置获取组件， 用于获取边界像素点的位置信息， 以及根据像素点的位置信息 确定与所述边界像素点相邻的四个校正像素点的位置； 及
[0031] 测算组件， 用于计算边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3和
D4。
[0032] 本发明第三方面提供一种机器可读存储介质， 其上存储有计算机程序， 其中所 述计算机程序在由处理器执行时实现如上任一项所述的 LED显示屏的整屏校正方 法。
发明的有益效果
有益效果
[0033] 上述 LED显示屏的整屏校正方法、 校正***及存储介质， 基于空间均匀性计算 校正系数， 而非现有技术的基于光学均匀性计算校正系数， 由于分析空间均匀 性只需明确每个 LED灯的物理位置， 因而普通相机或手机即可充当校正相机， 降 低了校正设备的成本。 此外， 由于 LED模组内的像素点在出厂时已经完成进行了 光学色度校正， 因而 LED模组内的像素点的亮度较为均匀， 因而， 上述校正方法 通过只针对 LED模组的边界进行分析， 大大减少了数据的分析量， 从而提高了校 正的速度。 以及， 由于基于空间均匀性计算校正系数， 因而， 在 LED显示屏正常 显示时也可进行校正， 而无需 LED显示屏显示特定的校正图像 （例如红、 绿、 蓝 纯色图像） ， 实现了实时校正。
对附图的简要说明
附图说明
[0034] 图 1为本发明一实施例的 LED显示屏的整屏校正方法的流程图；
[0035] 图 2为本发明又一实施例的 LED显示屏的整屏校正方法的流程图；
[0036] 图 3为 LED显示屏的拼接结构示意图；
[0037] 图 4为本发明又一实施例的 LED显示屏的整屏校正方法的流程图；
[0038] 图 5为本发明一实施例的 LED显示屏的整屏校正***的框架结构图。
发明实施例 本发明的实施方式
[0039] 为了便于理解本发明， 下面将参照相关附图对本发明进行更全面的描述。 附图 中给出了本发明的较佳实施方式。 但是， 本发明可以以许多不同的形式来实现 ， 并不限于本文所描述的实施方式。 相反地， 提供这些实施方式的目的是使对 本发明的公开内容理解的更加透彻全面。
[0040] 需要说明的是， 当元件被称为“固定于”另一个元件， 它可以直接在另一个元件 上或者也可以存在居中的元件。 当一个元件被认为是“连接”另一个元件， 它可以 是直接连接到另一个元件或者可能同时存在居中元件。 本文所使用的术语“垂直 的”、 “水平的”、 “左”、 “右”以及类似的表述只是为了说明的目的， 并不表示是 唯一的实施方式。
[0041] 除非另有定义， 本文所使用的所有的技术和科学术语与属于本发明的技术领域 的技术人员通常理解的含义相同。 本文中在本发明的说明书中所使用的术语只 是为了描述具体的实施方式的目的， 不是旨在于限制本发明。 本文所使用的术 语“及 /或”包括一个或多个相关的所列项目的任意的和所有的组合。
[0042] 图 1示出了本发明一实施例的 LED显示屏的整屏校正方法的流程图， 所述 LED 显示屏的整屏校正方法应用于由多个 LED模组拼接形成的 LED显示屏的校正， 特 别的， 适用于模组内的光学均匀性良好的 LED模组拼接形成的 LED显示屏的校正 ， 校正效果良好。
[0043] 如图 1所示， 所述的 LED显示屏的整屏校正方法， 包括以下步骤：
[0044] S102： 获取 LED显示屏的整屏图像。
[0045] 为了实现对 LED整屏的校正， 需要通过相机获取将整个 LED显示屏包含在内的 整屏图像， 再对整屏图像进行图像分析， 从而得到计算校正系数所需的各个参 数， 利用参数计算出校正系数后， 将校正系数应用于 LED显示屏， 即可完成对 L ED显示屏的整屏校正。
[0046] 在一些实施例中， LED显示屏的整屏图像可以通过手机或普通相机获取。 当然 ， 使用专业相机获取的图像较为清晰， 利于图像的分析， 从而得到的参数较为 精确， 进而可以提高校正系数的精确度。
[0047] 本领域技术人员可以理解的是， 为了便于对整屏图像的图像分析， 所述 LED显 示屏在整屏图像中所占的面积比越大越有利于图像分析， 理想状态下， 摄像头 捕获的相片四个角中与 LED显示屏的正视图图像的四个角至少两个相重叠。
[0048] S104： 根据获取的整屏图像确定 LED模组的边界像素点， 并获取边界像素点的 空间均匀性参数。
[0049] 在一些实施例中， LED显示屏由若干 LED模组拼接形成， 因而在 LED模组的与 交界处相邻的一行或一列 LED之间与相邻的 LED模组的与交界处相邻的一行或一 列 LED之间存在拼接线， 图像分析软件可以较为容易的就识别出拼接线， 进而识 别出每个 LED模组的边界像素点， 获取每个边界像素点对应的空间均匀性参数后 ， 即可计算出该边界像素点进行整屏校正时的校正系数。
[0050] 由于只需要确定拼接线的位置， 即可确定出边界像素点的位置， 获取边界像素 点对应的空间均匀性参数后， 即可计算出对应的校正系数， 也就是说， 获取的 整屏图像只要能够清晰的识别出拼接线的位置即可， 而无需对 LED显示屏的所有 LED的亮度均匀性进行分析， 因而， 只要使用普通相机， 甚至手机进行拍照获取 的整屏图像， 即可满足上述条件， 相比现有技术的使用专业相机拍照， 大大降 低了校正设备的成本， 以及操作的便利性。
[0051] 在一具体的实施方式中， 校正相机与 LED显示屏的控制***通过无线通讯连接 ， 当校正相机捕获 LED显示屏的整屏图像后， 将整屏图像通过无线传输的方式将 整屏图像传输至 LED显示屏的控制***， 控制***在接收到整屏图像后， 识别出 图像中的边界像素点， 进而得到一组校正系数。 所述无线通讯连接可以是 WLA N连接或蓝牙连接， 当然， 还可以是其他的无线连接方式， 在此并不作具体的限 制。
[0052] 请继续参阅图 2， 在一些实施例中， 所述获取边界像素点的空间均匀性参数包 括：
[0053] S1041： 获取边界像素点的位置信息；
[0054] S1043： 根据像素点的位置信息确定与所述边界像素点相邻的四个校正像素点 的位置；
[0055] S1045： 基于图像分析计算边界像素点与四个校正像素点之间的距离 Dl、 D2、
D3和 D4; [0056] 请继续参阅图 3， 图 3示例性的示出了部分整屏图像， 根据拼接线即可确定边界 像素点的信息， 根据边界像素点的位置， 确定四个校正像素点， 四个所述校正 像素点构成的四边形的其中一条对角线平行于 LED模组的边缘线。 确定好四个校 正像素点后， 分别计算四个校正像素点与对应的边界像素点之间的距离 Dl、 D2 、 D3和 D4, 即得到边界像素点的空间均匀性参数。 理想状态下， LED模组拼接 后， 两个拼接的 LED模组的边缘线相互平行， 从而四个校正像素点构成的四边形 的对角线相互垂直， 且对角线的焦点为该边界像素点。
[0057] 在一些实施例中， 所述边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3 和 D4直接由图像分析得到。 对整屏图像进行分析后， 可以得到边界像素点与四 个校正像素点之间的距离值， 将距离值直接代入预设的算法中， 即可得到对应 边界像素点的校正系数。
[0058] 在另一些实施例中， 所述边界像素点与四个校正像素点之间的距离 Dl、 D2、 D 3和 D4由图像分析得到的边界像素点与四个校正像素点之间的距离值校正后得到 。 由于人工操作校正相机 （例如手机） 拍照时， 相机可能存在一定的倾斜， 进 而使得所述边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3和 D4产生偏差 ， 因而， 需要对图像分析得到的边界像素点与四个校正像素点之间的距离值进 行校正， 从而得到较为精确的空间均匀性参数 Dl、 D2、 D3和 D4。
[0059] 在一些具体的实施例中， 所述对图像分析得到的边界像素点与四个校正像素点 之间的距离值的校正具体包括： 根据对图像分析得到的边界像素点与四个校正 像素点之间的距离值的相近度进行校正。
[0060] 在 LED显示屏中， 一个特定的边界像素点与四个校正像素点之间的距离为确定 的， 且四个边界像素点中的至少两个与边界像素点处于同一 LED模组内， 因而一 个特定的边界像素点与四个校正像素点之间的距离值中至少有两个是相等的， 且等于边界像素点所在 LED模组内的像素间距 D， 因此， 从图像分析得到的边界 像素点与四个校正像素点之间的距离值中可以确定至少两个较为相近的值， 并 根据确定的相近的值确定校正相机的偏移方向、 角度， 从而对图像分析得到的 边界像素点与四个校正像素点之间的距离值进行校正。
[0061] S106： 由 LED模组间的像素点阵空间均匀性参数根据预设算法得到校正系数。 [0062] 请参阅图 4， 在一些实施例中， 所述由LED模组间的像素点阵空间均匀性参数 根据预设算法得到校正系数包括：
[0063] S1061： 获取边界像素点所在LED模组的模组内像素间距D。
[0064] LH)模组的模组内像素间距D在出厂时即已确定， 因此， 在一些实施例中， 边 界像素点所在LED模组的模组内像素间距D可以直接读取。 当然， 在其他的一些 实施例中， 也可以给予图像分析计算边界像素点所在LED模组的模组内像素间距
D。
[0065] S1063： 根据模组内像素间距D及边界像素点与四个校正像素点之间的距离D1
、 D2、 D3和D4计算得到校正系数。
[0066] 在一些实施例中， 所述预设算法为：
[0067] 校正系数 =(D1+D2)*(D3+D4) / (4*D*D)。
[0068] S108： 将所述校正系数用于LED显示屏进行整屏校正。
[0069] 确定一边界像素点的位置后， 即可根据上述预设算法计算出对应的校正系数， 对所有的边界相对主义计算后， 得到一组校正系数， 将校正系数应用于LED显示 屏， 即可实现对LED显示屏的整屏校正。
[0070] 上述LED显示屏的整屏校正方法， 基于空间均匀性计算校正系数， 而非现有技 术的基于光学均匀性计算校正系数， 由于分析空间均匀性只需明确每个LED灯的 物理位置， 因而普通相机或手机即可充当校正相机， 降低了校正设备的成本。 此外， 由于LED模组内的像素点在出厂时已经完成进行了光学色度校正， 因而L ED模组内的像素点的亮度较为均匀， 因而， 上述校正方法通过只针对LED模组 的边界进行分析， 大大减少了数据的分析量， 从而提高了校正的速度。 以及， 由于基于空间均匀性计算校正系数， 因而， 在LED显示屏正常显示时也可进行校 正， 而无需LED显示屏显示特定的校正图像 (例如红、 绿、 蓝纯色图像) ， 实现 了实时校正。
[0071] 请参阅图 5， 本发明一实施例还提供一种LED显示屏的整屏校正*** 10， 包括 获取部件 110、 图像分析部件 120及计算部件 130。 所述LED显示屏的整屏校正系 统可以是一个完整的设备， 还可以是某个大的***的组成部分。
[0072] 所述获取部件 110， 用于获取LED显示屏的整屏图像。 [0073] 为了实现对 LED整屏的校正， 需要通过相机获取将整个 LED显示屏包含在内的 整屏图像， 再对整屏图像进行图像分析， 从而得到计算校正系数所需的各个参 数， 利用参数计算出校正系数后， 将校正系数应用于 LED显示屏， 即可完成对 L ED显示屏的整屏校正。
[0074] 在一些实施例中， LED显示屏的整屏图像可以通过手机或普通相机获取。 当然 ， 使用专业相机获取的图像较为清晰， 利于图像的分析， 从而得到的参数较为 精确， 进而可以提高校正系数的精确度。
[0075] 本领域技术人员可以理解的是， 为了便于对整屏图像的图像分析， 所述 LED显 示屏在整屏图像中所占的面积比越大越有利于图像分析， 理想状态下， 摄像头 捕获的相片四个角中与 LED显示屏的正视图图像的四个角至少两个相重叠。
[0076] 所述图像分析部件 120， 用于根据获取的整屏图像确定 LED模组的边界像素点 ， 并获取边界像素点的空间均匀性参数；
[0077] 在一些实施例中， LED显示屏由若干 LED模组拼接形成， 因而在 LED模组的与 交界处相邻的一行或一列 LED之间与相邻的 LED模组的与交界处相邻的一行或一 列 LED之间存在拼接线， 图像分析软件可以较为容易的就识别出拼接线， 进而识 别出每个 LED模组的边界像素点， 获取每个边界像素点对应的空间均匀性参数后 ， 即可计算出该边界像素点进行整屏校正时的校正系数。
[0078] 由于只需要确定拼接线的位置， 即可确定出边界像素点的位置， 获取边界像素 点对应的空间均匀性参数后， 即可计算出对应的校正系数， 也就是说， 获取的 整屏图像只要能够清晰的识别出拼接线的位置即可， 而无需对 LED显示屏的所有 LED的亮度均匀性进行分析， 因而， 只要使用普通相机， 甚至手机进行拍照获取 的整屏图像， 即可满足上述条件， 相比现有技术的使用专业相机拍照， 大大降 低了校正设备的成本， 以及操作的便利性。
[0079] 在一具体的实施方式中， 校正相机与 LED显示屏的控制***通过无线通讯连接 ， 当校正相机捕获 LED显示屏的整屏图像后， 将整屏图像通过无线传输的方式将 整屏图像传输至 LED显示屏的控制***， 控制***在接收到整屏图像后， 识别出 图像中的边界像素点， 进而得到一组校正系数。 所述无线通讯连接可以是 WLA N连接或蓝牙连接， 当然， 还可以是其他的无线连接方式， 在此并不作具体的限 制。
[0080] 在一些实施例中， 所述图像分析部件 120包括：
[0081] 位置获取组件 121， 用于获取边界像素点的位置信息， 以及根据像素点的位置 信息确定与所述边界像素点相邻的四个校正像素点的位置； 及
[0082] 测算组件 123， 用于计算边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3 和 D4。
[0083] 根据拼接线即可确定边界像素点的信息， 根据边界像素点的位置， 确定四个校 正像素点， 四个所述校正像素点构成的四边形的其中一条对角线平行于 LED模组 的边缘线。 确定好四个校正像素点后， 分别计算四个校正像素点与对应的边界 像素点之间的距离 Dl、 D2、 D3和 D4， 即得到边界像素点的空间均匀性参数。 理 想状态下， LED模组拼接后， 两个拼接的 LED模组的边缘线相互平行， 从而四个 校正像素点构成的四边形的对角线相互垂直， 且对角线的焦点为该边界像素点
[0084] 在一些实施例中， 所述边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3 和 D4直接由图像分析得到。 对整屏图像进行分析后， 可以得到边界像素点与四 个校正像素点之间的距离值， 将距离值直接代入预设的算法中， 即可得到对应 边界像素点的校正系数。
[0085] 在另一些实施例中， 所述边界像素点与四个校正像素点之间的距离 Dl、 D2、 D 3和 D4由图像分析得到的边界像素点与四个校正像素点之间的距离值校正后得到 。 由于人工操作校正相机 （例如手机） 拍照时， 相机可能存在一定的倾斜， 进 而使得所述边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3和 D4产生偏差 ， 因而， 需要对图像分析得到的边界像素点与四个校正像素点之间的距离值进 行校正， 从而得到较为精确的空间均匀性参数 Dl、 D2、 D3和 D4。
[0086] 在一些具体的实施例中， 所述对图像分析得到的边界像素点与四个校正像素点 之间的距离值的校正具体包括： 根据对图像分析得到的边界像素点与四个校正 像素点之间的距离值的相近度进行校正。
[0087] 在 LED显示屏中， 一个特定的边界像素点与四个校正像素点之间的距离为确定 的， 且四个边界像素点中的三个与边界像素点处于同一 LED模组内， 因而一个特 定的边界像素点与四个校正像素点之间的距离值中有三个是相等的， 且等于边 界像素点所在LED模组内的像素间距D， 因此， 从图像分析得到的边界像素点与 四个校正像素点之间的距离值中可以确定三个较为相近的值， 并根据确定的三 个相近的值确定校正相机的偏移方向、 角度， 从而对图像分析得到的边界像素 点与四个校正像素点之间的距离值进行校正。
[0088] 所述计算部件 130, 用于根据预设算法得到校正系数。
[0089] 所述预设算法为：
[0090] 校正系数 =(D1+D2)*(D3+D4) / (4*D*D)。
[0091] 其中， D为边界像素点所在LED模组的模组内像素间距。
[0092] LH)模组的模组内像素间距D在出厂时即已确定， 因此， 在一些实施例中， 边 界像素点所在LED模组的模组内像素间距D可以直接读取。 当然， 在其他的一些 实施例中， 也可以给予图像分析计算边界像素点所在LED模组的模组内像素间距 D。
[0093] 确定一边界像素点的位置后， 即可根据上述预设算法计算出对应的校正系数， 对所有的边界相对主义计算后， 得到一组校正系数， 将校正系数应用于LED显示 屏， 即可实现对LED显示屏的整屏校正。
[0094] 上述LED显示屏的整屏校正*** 10, 基于空间均匀性计算校正系数， 而非现有 技术的基于光学均匀性计算校正系数， 由于分析空间均匀性只需明确每个LED灯 的物理位置， 因而普通相机或手机即可充当校正相机， 降低了校正设备的成本 。 此外， 由于LED模组内的像素点在出厂时已经完成进行了光学色度校正， 因而 LED模组内的像素点的亮度较为均匀， 因而， 上述校正方法通过只针对LED模组 的边界进行分析， 大大减少了数据的分析量， 从而提高了校正的速度。 以及， 由于基于空间均匀性计算校正系数， 因而， 在LED显示屏正常显示时也可进行校 正， 而无需LED显示屏显示特定的校正图像 (例如红、 绿、 蓝纯色图像) ， 实现 了实时校正。
[0095] 本发明一实施例还提供一种机器可读存储介质， 其上存储有计算机程序， 其中 所述计算机程序在由处理器执行时实现上述任一实施例所述的LED显示屏的整屏 校正方法。 [0096] 所述 LED显示屏的整屏校正*** 10/计算机装置集成的部件 /模块 /单元如果以软 件功能单元的形式实现并作为独立的产品销售或使用时， 可以存储在一个计算 机可读取存储介质中。 基于这样的理解， 本发明实现上述实施方式方法中的全 部或部分流程， 也可以通过计算机程序来指令相关的硬件来完成， 所述的计算 机程序可存储于一计算机可读存储介质中， 所述计算机程序在被处理器执行时 ， 可实现上述各个方法实施方式的步骤。 其中， 所述计算机程序包括计算机程 序代码， 所述计算机程序代码可以为源代码形式、 对象代码形式、 可执行文件 或某些中间形式等。 所述计算机可读存储介质可以包括： 能够携带所述计算机 程序代码的任何实体或装置、 记录介质、 U盘、 移动硬盘、 磁碟、 光盘、 计算机 存储器、 只读存储器 (ROM， Read-Only
Memory)、 随机存取存储器 (RAM, Random Access Memory)、 电载波信号、 电信 信号以及软件分发介质等。 需要说明的是， 所述计算机可读介质包含的内容可 以根据司法管辖区内立法和专利实践的要求进行适当的增减， 例如在某些司法 管辖区， 根据立法和专利实践， 计算机可读介质不包括电载波信号和电信信号
[0097] 在本发明所提供的几个具体实施方式中， 应该理解到， 所揭露的***和方法， 可以通过其它的方式实现。 例如， 以上所描述的***实施方式仅仅是示意性的 ， 例如， 所述部件的划分， 仅仅为一种逻辑功能划分， 实际实现时可以有另外 的划分方式。
[0098] 另外， 在本发明各个实施例中的各功能模块可以集成在相同处理模块中， 也可 以是各个模块单独物理存在， 也可以两个或两个以上模块集成在相同模块中。 上述集成的模块既可以采用硬件的形式实现， 也可以采用硬件加软件功能模块 的形式实现。
[0099] 对于本领域技术人员而言， 显然本发明实施例不限于上述示范性实施例的细节 ， 而且在不背离本发明实施例的精神或基本特征的情况下， 能够以其他的具体 形式实现本发明实施例。 因此， 无论从哪一点来看， 均应将实施例看作是示范 性的， 而且是非限制性的， 本发明实施例的范围由所附权利要求而不是上述说 明限定， 因此旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括 在本发明实施例内。 不应将权利要求中的任何附图标记视为限制所涉及的权利 要求。 此外， 显然“包括”一词不排除其他单元或步骤， 单数不排除复数。 ***、 装置或终端权利要求中陈述的多个单元、 模块或装置也可以由同一个单元、 模 块或装置通过软件或者硬件来实现。 第一， 第二等词语用来表示名称， 而并不 表示任何特定的顺序。
[0100] 以上所述实施例仅表达了本发明的几种实施方式， 其描述较为具体和详细， 但 并不能因此而理解为对发明专利范围的限制。 应当指出的是， 对于本领域的普 通技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干变形和改进 ， 这些都属于本发明的保护范围。 因此， 本发明专利的保护范围应以所附权利 要求为准。

Claims

权利要求书
[权利要求 1] 一种 LED显示屏的整屏校正方法， 其特征在于， 所述方法包括以下步 骤：
获取 LED显示屏的整屏图像；
根据获取的整屏图像确定 LED模组的边界像素点， 并获取边界像素点 的空间均匀性参数；
由 LED模组间的像素点阵空间均匀性参数根据预设算法计算得到校正 系数；
将所述校正系数用于 LED显示屏进行整屏校正。
[权利要求 2] 根据权利要求 1所述的 LED显示屏的整屏校正方法， 其特征在于， 所 述获取边界像素点的空间均匀性参数包括：
获取边界像素点的位置信息；
根据像素点的位置信息确定与所述边界像素点相邻的四个校正像素点 的位置；
基于图像分析计算边界像素点与四个校正像素点之间的距离 Dl、 D2
、 D3和 D4;
其中， 四个所述校正像素点构成的四边形的其中一条对角线平行于 L ED模组的边缘线。
[权利要求 3] 根据权利要求 2所述的 LED显示屏的整屏校正方法， 其特征在于， 所 述由 LED模组间的像素点阵空间均匀性参数根据预设算法得到校正系 数包括：
获取边界像素点所在 LED模组的模组内像素间距 D ;
根据模组内像素间距 D及边界像素点与四个校正像素点之间的距离 D 1 、 D2、 D3和 D4计算得到校正系数。
[权利要求 4] 根据权利要求 3所述的 LED显示屏的整屏校正方法， 其特征在于， 所 述获取边界像素点所在 LED模组的模组内像素间距 D包括： 基于图像分析计算边界像素点所在 LED模组的模组内像素间距 D ; 或 读取预设的模组内像素间距 D。
[权利要求 5] 根据权利要求 3所述的 LED显示屏的整屏校正方法， 其特征在于， 所 述边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3和 D4直接由 图像分析得到； 或
所述边界像素点与四个校正像素点之间的距离 Dl、 D2、 D3和 D4由对 图像分析得到的边界像素点与四个校正像素点之间的距离值校正后得 到。
[权利要求 6] 根据权利要求 5所述的 LED显示屏的整屏校正方法， 其特征在于， 所 述对图像分析得到的边界像素点与四个校正像素点之间的距离值的校 正具体包括： 根据对图像分析得到的边界像素点与四个校正像素点之 间的距离值的相近度进行校正。
[权利要求 7] 根据权利要求 3至 6任一所述的 LED显示屏的整屏校正方法， 其特征在 于， 所述预设算法为： 校正系数 =(D1+D2)*(D3+D4) / (4*D*D)。
[权利要求 8] 一种 LED显示屏的整屏校正***， 其特征在于， 包括：
获取部件， 用于获取 LED显示屏的整屏图像；
图像分析部件， 用于根据获取的整屏图像确定 LED模组的边界像素点 ， 并获取边界像素点的空间均匀性参数； 及
计算部件， 用于根据预设算法得到校正系数。
[权利要求 9] 根据权利要求 8所述的 LED显示屏的整屏校正***， 其特征在于， 所 述图像分析部件包括：
位置获取组件， 用于获取边界像素点的位置信息， 以及根据像素点的 位置信息确定与所述边界像素点相邻的四个校正像素点的位置； 及 测算组件， 用于计算边界像素点与四个校正像素点之间的距离 Dl、 D
2、 D3和 D4。
[权利要求 10] 一种机器可读存储介质， 其上存储有计算机程序， 其中所述计算机程 序在由处理器执行时实现如权利要求 1至 7任一项所述的 LED显示屏的 整屏校正方法。
PCT/CN2018/085948 2018-01-08 2018-05-08 Led显示屏的整屏校正方法、校正***及存储介质 WO2019134317A1 (zh)

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