CN112489593B - Seamless splicing correction method and device for LED display screen - Google Patents
Seamless splicing correction method and device for LED display screen Download PDFInfo
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- CN112489593B CN112489593B CN202011591615.8A CN202011591615A CN112489593B CN 112489593 B CN112489593 B CN 112489593B CN 202011591615 A CN202011591615 A CN 202011591615A CN 112489593 B CN112489593 B CN 112489593B
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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]
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Abstract
The invention discloses a seamless splicing correction method and a device for an LED display screen, wherein the method comprises the following steps: determining a preset number of required target sub-screens to be corrected and a public area in at least one sub-screen corresponding to the LED display screen; respectively multiplying the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient from the center position of the public area upwards and downwards or leftwards and rightwards; calculating a second average brightness value between all the lamp points in other areas of the target sub-screen and the first average brightness value of all the lamp points in the public area; and correcting the measured brightness value of each lamp point in the target sub-screen according to the second average brightness value so as to correct all the lamp points after traversing the LED display screen. According to the scheme, the brightness of the public area is subjected to gradient adjustment, the brightness of the sub-screen is adjusted through the correction coefficient of the public area, the correction process is not limited by the maximum loading capacity of the PC end and the shape of the LED display screen, and the adjusted brightness transition is more uniform.
Description
Technical Field
The invention relates to the technical field of correction of LED display screens, in particular to a seamless splicing correction method and device of an LED display screen.
Background
The LED display screen is generally composed of a plurality of boxes, and a plurality of sending cards are needed to transmit various instruction parameters and video data issued by the control terminal, for example, one 64k LED display screen is usually needed to transmit 64 sending cards, currently, in order to correct each LED box, a probe card mode is needed to detect all the sending cards, but because the number of the sending cards is large, the problem of detection loss may exist in the process of detecting the sending cards; pixels carried by a display card of the control terminal are limited and cannot meet the requirement of the large screen body, so that the correction coefficient of the whole LED display screen cannot be generated at one time through the control terminal; for the two problems mentioned above, the current solution is: the LED display screen is divided into a certain number of LED boxes, then correction images corresponding to the LED boxes are obtained, and finally the LED display screen is corrected through the correction images. Therefore, a new technical solution to solve the above problem of poor large screen correction effect is needed.
Disclosure of Invention
In order to overcome the problems in the related art, the invention discloses and provides a seamless splicing correction method and device for an LED display screen.
According to a first aspect of the disclosed embodiments of the present invention, there is provided a seamless splicing correction method for an LED display screen, applied to a server, the method including:
determining a preset number of required target sub-screens to be corrected in at least one sub-screen corresponding to the LED display screen, and determining a common area overlapped between each sub-screen and an adjacent sub-screen in the target sub-screens required by the preset number, wherein the common area is positioned in the target sub-screens, and the preset number of requirements are determined according to the loading capacity of a server;
if the position relation between the two sub-screens corresponding to the public area is up-down adjacent, respectively multiplying the measured brightness value of each row of the lamp points by a preset percentage which is gradually increased in a gradient manner from the center position of the public area upwards and downwards to obtain a first brightness value of each lamp point in the public area;
if the position relation between the two sub-screens corresponding to the public area is left-right adjacent, multiplying the measured brightness value of each row of the lamp points by a preset percentage which is gradually increased in a gradient manner from the center position to the left and the right respectively to obtain a second brightness value of each lamp point in the public area;
calculating second average brightness values between the first average brightness values of all the lamp points in the public area and the measured brightness values of all the lamp points in other areas according to the first average brightness value and/or the second average brightness value corresponding to each lamp point in the public area and the measured brightness value of each lamp point in other areas of the target sub-screen;
and correcting the measured brightness value of each lamp point in the target sub-screen according to the second average brightness value, so that the measured brightness value of each lamp point in the LED display screen is corrected after each sub-screen of the LED display screen is traversed to be the target sub-screen.
Optionally, determining a preset number of required target sub-screens to be corrected in at least one sub-screen corresponding to the LED display screen, and an overlapped common area between each sub-screen and an adjacent sub-screen in the preset number of required target sub-screens, includes:
dividing the LED display screen into at least one sub-screen according to the number of sending cards connected with the LED display screen;
determining a preset number of required target sub-screens to be corrected according to the loading capacity of the server;
and dividing at least one subarea area on each sub-screen, and determining the size of the public area according to the number of the subarea areas.
Optionally, the dividing at least one partition area on each sub-screen, and determining the size of the common area according to the number of the partition areas, includes:
dividing each sub-screen into at least one partition area, wherein the size of each partition area is equal;
determining a common overlapping area between each sub-screen and an adjacent sub-screen in the target sub-screens with the preset number of requirements;
and determining the size of the public area according to the number of the subarea areas covering the public area and the size of the subarea areas.
Optionally, multiplying the measured brightness value of each row of the lamp points by a preset percentage increasing in gradient from the center of the common area upwards and downwards respectively, includes:
determining a center position of the common area;
respectively multiplying the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient upwards and downwards from the central position;
and multiplying the measured brightness values of each row of the lamp points by a preset percentage which is increased in gradient from the center position to the left and the right respectively, wherein the preset percentage comprises the following steps:
determining a center position of the common area;
and multiplying the measured brightness value of each row of the lamp points by a preset percentage which is increased in gradient respectively leftwards and rightwards from the central position.
Optionally, the correcting the measured brightness value of each light point in the target sub-screen according to the second average brightness value to correct the measured brightness value of each light point in the LED display screen after traversing each sub-screen of the LED display screen as the target sub-screen includes:
adjusting the value of the measured brightness value of each lamp point in other areas of the target sub-screen to the value of the second average brightness value to finish the correction of the target sub-screen;
and continuously determining the sub-screens to be corrected with the preset number of requirements as a next group of target sub-screens until the correction of the measured brightness value of each lamp point in the LED display screen is completed.
According to a second aspect of the disclosed embodiments of the present invention, there is provided a seamless splicing correction apparatus for LED display screens, applied to a server, the apparatus including:
the screen dividing module is used for determining a preset number of required target sub-screens to be corrected in at least one sub-screen corresponding to the LED display screen and a public area overlapped between each sub-screen and an adjacent sub-screen in the target sub-screens with the preset number of requirements, wherein the public area is positioned in the target sub-screens, and the preset number of requirements are determined according to the loading capacity of a server;
the upper and lower adjusting module is connected with the screen dividing module, and if the position relationship between the two sub-screens corresponding to the public area is that the two sub-screens are adjacent up and down, the measured brightness values of each row of the lamp points are respectively multiplied by a preset percentage which is increased in a gradient manner from the center position of the public area upwards and downwards to obtain a first brightness value of each lamp point in the public area;
the left and right adjusting module is connected with the screen dividing module, and if the position relationship between the two sub-screens corresponding to the public area is left and right adjacent, the measured brightness value of each row of the lamp points is respectively multiplied by a preset percentage which is increased in a gradient manner from the center position to the left and the right respectively so as to obtain a second brightness value of each lamp point in the public area;
a brightness value correction module which is respectively connected with the up-down adjustment module and the left-right adjustment module, and calculates a second average brightness value between the first average brightness value of all the lamp points in the public area and the measured brightness value of all the lamp points in other areas according to the first average brightness value of the first brightness value and/or the second brightness value corresponding to each lamp point in the public area and the measured brightness value of each lamp point in other areas of the target sub-screen;
and the whole screen correction module is connected with the brightness value correction module and is used for correcting the measured brightness value of each lamp point in the target sub-screen according to the second average brightness value so as to correct the measured brightness value of each lamp point in the LED display screen after traversing each sub-screen of the LED display screen as the target sub-screen.
Optionally, the screen dividing module includes:
the first sub-screen dividing unit is used for dividing the LED display screen into at least one sub-screen according to the number of sending cards connected with the LED display screen;
the target sub-screen determining unit is connected with the first sub-screen dividing unit and determines a preset number of target sub-screens to be corrected according to the loading capacity of the server;
and the partition unit is connected with the target sub-screen determining unit, divides at least one partition area on each sub-screen respectively, and determines the size of the public area according to the number of the partition areas.
Optionally, the partition unit:
dividing each sub-screen into at least one partition area, wherein the size of each partition area is equal;
determining a common overlapping area between each sub-screen and an adjacent sub-screen in the target sub-screens with the preset number of requirements;
and determining the size of the public area according to the number of the subarea areas covering the public area and the size of the subarea areas.
Optionally, the up-down adjusting module includes:
a first position determination unit that determines a center position of the common area;
the upper and lower adjusting unit is connected with the first position determining unit, and respectively multiplies the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient upwards and downwards from the central position;
and, the left-right adjustment module includes:
a second position determination unit that determines a center position of the common area;
and the left and right adjusting unit is connected with the second position determining unit and respectively multiplies the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient from the center position to the left and the right.
Optionally, the whole screen correction module includes:
the target sub-screen correcting unit is used for adjusting the value of the measured brightness value of each lamp point in other areas of the target sub-screen to the value of the second average brightness value to finish the correction of the target sub-screen;
and the circulating unit is connected with the target sub-screen correcting unit and continuously determines the sub-screens to be corrected with the preset quantity requirements as the next group of target sub-screens until the correction of the measured brightness value of each lamp point in the LED display screen is completed.
Through the technical scheme disclosed by the invention, the following technical effects can be achieved:
(1) the problem that bright and dark lines appear at the box body boundary line when each box body of the LED display screen is corrected respectively is solved by dividing at least one sub-screen and correcting the measured brightness value of the whole sub-screen according to the brightness value of the public area between the sub-screens;
(2) when the resolution ratio of the LED display screen exceeds the maximum loading capacity of the server, the target sub-screens with preset quantity requirements are selected according to the loading capacity of the server for correction, so that the correction process is not limited by the maximum loading capacity of the server;
(3) the method has the advantages that the LED display screen to be corrected can be divided into any sub-screens (the sub-screen division is related to the sending card), so that the sub-screens are not limited by the shape of the LED display screen and can be applied to correction of the special-shaped display screen;
(4) the brightness of each lamp point on the corrected LED display screen can be more uniformly transited by multiplying the lamp points in the public area from the center position to the two sides by a gradient increasing percentage respectively, so that the brightness measurement error caused by different positions of the camera is eliminated.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a flow chart illustrating a method for seamless tiling correction for an LED display screen according to an exemplary embodiment;
FIG. 2 is a diagram illustrating a screen partitioning method in accordance with an exemplary embodiment;
FIG. 3 is a flow chart of a screen division method according to that shown in FIG. 1;
FIG. 4 is a flow chart of a method of zone partitioning according to that shown in FIG. 3;
FIG. 5 is a flow chart of a loop correction method according to the one shown in FIG. 1;
FIG. 6 is a block diagram illustrating a seamless tiling correction apparatus for LED display screens according to an exemplary embodiment;
FIG. 7 is a schematic diagram of a screen partitioning module according to the embodiment shown in FIG. 6;
FIG. 8 is a schematic diagram of a screen correction module according to the embodiment shown in FIG. 7.
Detailed Description
The following detailed description of the disclosed embodiments will be made in conjunction with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a flowchart illustrating a seamless splicing correction method for an LED display screen according to an exemplary embodiment, where the method is applied to a server, as shown in fig. 1, and includes:
before introducing the seamless splicing correction of the LED display screen provided by the present disclosure, a target application scenario related to various embodiments of the present disclosure is first introduced, where the target application scenario includes a server, and the server is a server that has a computing function and can respond to and send a service request. The server may be, for example, a server in a control terminal.
In step 110, a preset number of required target sub-screens to be corrected and a common area of overlap between each sub-screen and an adjacent sub-screen in the preset number of required target sub-screens are determined in at least one sub-screen corresponding to the LED display screen.
The public area is located in the target sub-screen, and the preset quantity requirement is determined according to the loading capacity of the server.
Illustratively, the LED display screen is divided into a plurality of sub-screens, each sub-screen and an adjacent sub-screen have an overlapping portion (i.e. a common area), as shown in fig. 2, the screen division is schematically illustrated, and a preset number of required target sub-screens to be corrected (as shown in fig. 2, the preset required number of target sub-screens are 4 target sub-screens with numbers 1, 2, 3, 4 respectively) and a common area located in the sub-screens are determined according to the load capacity of the server in the divided sub-screens. In this way, the brightness of the whole screen can be corrected according to the brightness of the common area through the following step 120-150, so as to correct the display brightness in the whole LED display screen.
In step 120, if the position relationship between the two sub-screens corresponding to the common area is up-down adjacent, the measured brightness values of each row of the light points are respectively multiplied by a preset percentage which is gradually increased in a gradient manner from the center position of the common area upwards and downwards, so as to obtain a first brightness value of each light point in the common area.
For example, it can be understood that before the brightness of the lamp point of the LED display screen is corrected, a camera needs to capture a picture of the LED display screen to obtain a measured brightness value of each lamp point, but the distance between the camera and each lamp point is different, so that a certain measurement error exists in the measured brightness value of the lamp point. In order to eliminate the measurement error, the measurement error of the lamp brightness in the common area needs to be corrected first in step 120 or step 130, and then the corrected first brightness value and second brightness value of each lamp in the common area and the lamp brightness in other areas in the whole sub-screen need to be corrected. The method comprises the following specific steps: the center position of the common area is determined (the center position is determined according to the row number of the horizontal rows of the lamp points contained in the common area and the point distance between each lamp point, it can be understood that, in general, the number of the lamp points in each row is the same, and the point distance between the lamp points is equal), and for the common area with the position relationship of being adjacent up and down (such as the common area with the horizontal bar in the target sub-screen in fig. 2), the measured brightness value of each horizontal row of the lamp points is multiplied by a percentage from the center position respectively upwards and downwards. Wherein the percentage by which the measured brightness value of each row of light points is multiplied by a percentage which increases in a gradient, for example, 0%, 10%, 20% … 80%, 90%, 100%, from the center position upwards; and, multiplying downward from the center by a graded increasing percentage, such as 0%, 10%, 20% … 80%, 90%, 100%, respectively, such that the percentage multiplied by each row of light points from top to bottom in the common area is: 100%, 90%, 80% … 20%, 10%, 0%, 10%, 20% … 80%, 90%, 100%.
In step 130, if the position relationship between the two sub-screens corresponding to the common area is left-right adjacent, the measured brightness values of each row of the light points are multiplied by a preset percentage with gradient increasing from the center position to the left and the right respectively to obtain a second brightness value of each light point in the common area.
Illustratively, as with the step 120, for the common area (such as the common area with vertical bars in the target sub-screen in fig. 2) whose positional relationship is left-right adjacent, the center position is determined according to the number of rows of vertical lamp points included in the common area and the point distance between each lamp point, it can be understood that, in general, the number of lamp points in each row is the same, and the point distances between the lamp points are the same. After the center position is determined, the measured brightness values of each row of lamp points are multiplied by a percentage from the center position to the left and to the right, respectively. Wherein the percentage by which the measured brightness values of each row of light points are multiplied increases in a gradient from the central position to the left/right, for example, 0%, 10%, 20% … 80%, 90%, 100%, such that the percentage by which each row of light points is multiplied from left to right in the common area is: 100%, 90%, 80% … 20%, 10%, 0%, 10%, 20% … 80%, 90%, 100%.
In step 140, a second average brightness value between the first average brightness value of all the lamp points in the common area and the measured brightness value of all the lamp points in the other area is calculated according to the first average brightness value of the first brightness value and/or the second brightness value corresponding to each lamp point in the common area and the measured brightness value of each lamp point in the other area of the target sub-screen.
For example, the first brightness value and/or the second brightness value of each lamp point in the common area is obtained by multiplying the measured brightness of each lamp point by the corresponding percentage according to the above step 120 or step 130. For example, as shown in fig. 2, each of the light points in the common region in the shape of the horizontal bars includes a first luminance value, each of the light points in the common region in the shape of the vertical bars includes a second luminance value, and the light points in the region in the positive direction where the common region in the shape of the horizontal bars and the common region in the shape of the vertical bars overlap contain both the first luminance value and the second luminance value. Thus, for a lamp point containing only the first brightness value or the second brightness value, the first brightness value or the second brightness value is determined as the first average brightness value of the lamp point, and for a lamp point containing both the first brightness value and the second brightness value, the average of the first brightness value and the second brightness value of the lamp point is taken as the first average brightness value of the lamp point. After the first average brightness value of each lamp point in the public area is determined, an average value between the first average brightness value of each lamp point in the public area and the measured brightness value of each lamp point in other areas in the target sub-screen, that is, a second average brightness value, is calculated, so as to correct the measured brightness value of each lamp point in the target sub-screen according to the second average brightness value (it can be understood that the brightness value of each lamp point in the target sub-screen after correction is the same, and is the second average brightness value).
In step 150, the measured brightness value of each light point in the target sub-screen is corrected according to the second average brightness value, so that the measured brightness value of each light point in the LED display screen is corrected after each sub-screen of the LED display screen is traversed as the target sub-screen.
Illustratively, after the second average brightness value is determined, the measured brightness value of each lamp point in the target sub-screen is corrected according to the second average brightness value, and each sub-screen of the LED display screen is traversed until the correction process of the measured brightness value of each lamp point in the LED display screen is completed.
Fig. 3 is a flowchart of a screen division method according to fig. 1, and as shown in fig. 2, the step 110 includes:
in step 111, the LED display screen is divided into at least one sub-screen according to the number of transmitting cards connected to the LED display screen.
Illustratively, the sub-screen is a display picture of which the resolution size is represented in the software display interface by the LED display screen, and the sub-screen can be divided according to various rules. For example, the number of sending cards included in the LED display screen is detected by the probe card, and the sub-screen division is performed on the LED display screen according to a rule that each sub-screen includes a preset number of sending cards. It can be understood that, generally, the number of the sending cards included in each sub-screen is equal, or after the predetermined number of sub-screens are determined, the number of the remaining sending cards is smaller than the number of the sending cards in the divided sub-screens, and then all the remaining sending cards are taken as a newly divided sub-screen. It should be noted that the number of the LED display screens connected to the sending card is determined by the maximum pixel loading capacity of the sending card and the number of pixels of the LED display screen, so that the LED display screen can be connected to at least one sending card, and the sub-screens are divided according to the number of the sending cards, so that one sending card can correspond to at least one sub-screen, that is, the division of the sub-screens is also related to the maximum pixel loading capacity of the sending card.
In step 112, a preset number of required target sub-screens to be corrected is determined according to the loading capacity of the server.
For example, in order to make the correction process of the LED display screen not affected by the loading capacity of the server, a preset number of required sub-screens to be corrected are selected as target sub-screens, and the sum of the resolutions of all the target sub-screens is smaller than the maximum loading capacity of the server.
In step 113, at least one partition area is divided on each sub-screen, and the size of the common area is determined according to the number of the partition areas.
For example, after the sub-screens are divided for the LED display screen through the above step 112 or step 113, each sub-screen is divided into partition areas with a preset size. Specifically, the partition rule of the partition areas is to divide the partition areas according to the shooting range of the camera in order to facilitate the camera to capture an image of each partition area. For example, if the resolution corresponding to the optimal shooting effect of the camera is 150:100, the size of the partition area is determined to be 150 × n:100 × n, n is the number of camera hops, and the number of camera hops is related to the model of the camera).
Fig. 4 is a flowchart of a partition area dividing method according to fig. 3, and as shown in fig. 4, the step 113 includes:
in step 1131, each sub-screen is divided into at least one partition area.
Wherein the size of each partitioned area is equal.
In step 1132, a common area of overlap between each sub-screen and an adjacent sub-screen in the preset number of required target sub-screens is determined.
Wherein each common area in each sub-screen is equal in size.
In step 1133, the size of the common area is determined according to the number of the partition areas covering the common area and the size of the partition areas.
Illustratively, each sub-screen is divided into a plurality of partitioned areas of equal size, each partitioned area representing one area unit, and a portion (i.e., a common area) of each sub-screen overlapping an adjacent sub-screen covers at least one partitioned area, because the size of each common area is determined by the number of partitioned areas covered by the common area.
Fig. 5 is a flow chart of a loop correction method according to fig. 1, as shown in fig. 5, the step 150 comprising:
in step 151, the measured brightness value of each lamp point in the other area of the target sub-screen is adjusted to the second average brightness value, thereby completing the calibration of the target sub-screen.
In step 152, the required sub-screens to be corrected in the preset number are determined as the next set of target sub-screens until the correction of the measured brightness value of each lamp point in the LED display screen is completed.
Illustratively, after the measured brightness value of each lamp point in the target sub-screen is adjusted to the second average brightness value to complete the correction of the target sub-screen, the next group of sub-screens to be corrected is determined and determined as the target sub-screen, and the correction of the next group of target sub-screens is completed through the above steps 110 to 150 until the correction of all lamp points in the LED display screen is completed.
Fig. 6 is a block diagram illustrating a seamless splicing correction apparatus for an LED display screen according to an exemplary embodiment, as shown in fig. 6, applied to a server, the apparatus 600 includes:
the screen dividing module 610 determines a preset number of required target sub-screens to be corrected in at least one sub-screen corresponding to the LED display screen, and a common area overlapped between each sub-screen and an adjacent sub-screen in the preset number of required target sub-screens, where the common area is located in the target sub-screen, and the preset number of required sub-screens is determined according to a load carrying capacity of a server;
an up-down adjusting module 620 connected to the screen dividing module 610, wherein if the position relationship between the two sub-screens corresponding to the common area is up-down adjacent, the measured brightness values of each row of the light points are respectively multiplied by a preset percentage in a gradient increasing manner from the center position of the common area upwards and downwards to obtain a first brightness value of each light point in the common area;
a left-right adjusting module 630, connected to the screen dividing module 610, for multiplying the measured brightness value of each row of the light points by a preset percentage that increases in a gradient manner from the center position to the left and to the right respectively to obtain a second brightness value of each light point in the public area if the position relationship between the two sub-screens corresponding to the public area is left-right adjacent;
a brightness value correction module 640, respectively connected to the up-down adjustment module 620 and the left-right adjustment module 630, respectively connected to the up-down adjustment module and the left-right adjustment module, for calculating a second average brightness value between the first average brightness value of all the lamp points in the common area and the measured brightness value of all the lamp points in the other area according to the first average brightness value of the first brightness value and/or the second brightness value corresponding to each lamp point in the common area and the measured brightness value of each lamp point in the other area of the target sub-screen;
the whole screen correcting module 650 is connected to the brightness value correcting module 640, and corrects the measured brightness value of each light point in the target sub-screen according to the second average brightness value, so as to correct the measured brightness value of each light point in the LED display screen after traversing each sub-screen of the LED display screen as the target sub-screen.
Fig. 7 is a schematic structural diagram of a screen division module according to fig. 6, and as shown in fig. 7, the screen division module 610 includes:
the first sub-screen dividing unit 611 divides the LED display screen into at least one sub-screen according to the number of the transmission cards connected to the LED display screen;
a target sub-screen determining unit 612, connected to the first sub-screen dividing unit 611, for determining a preset number of target sub-screens to be corrected according to the load carrying capacity of the server;
a partitioning unit 613, connected to the target sub-screen determining unit 612, for partitioning at least one partition area on each sub-screen, and determining the size of the common area according to the number of the partition areas.
Optionally, the partition unit 613:
dividing each sub-screen into at least one partition area, wherein the size of each partition area is equal;
determining a common overlapping area between each sub-screen and an adjacent sub-screen in the target sub-screens with the preset number of requirements;
and determining the size of the public area according to the number of the subarea areas covering the public area and the size of the subarea areas.
Optionally, the up-down adjustment module 620:
a first position determination unit that determines a center position of the common area;
the upper and lower adjusting unit is connected with the first position determining unit, and respectively multiplies the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient upwards and downwards from the central position;
and, the left-right adjustment module 630:
a second position determination unit that determines a center position of the common area;
and the left and right adjusting unit is connected with the second position determining unit and respectively multiplies the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient from the center position to the left and the right.
Fig. 8 is a schematic structural diagram of a screen calibration module according to fig. 7, and as shown in fig. 8, the whole screen calibration module 650 includes:
a target sub-screen correcting unit 651 for adjusting the value of the measured brightness value of each light point in the other region of the target sub-screen to the value of the second average brightness value to complete the correction of the target sub-screen;
and the circulating unit 652 is connected with the target sub-screen correcting unit 651, and continuously determines the required sub-screens to be corrected in preset number as a next group of target sub-screens until the correction of the measured brightness value of each lamp point in the LED display screen is completed.
In summary, the present disclosure relates to a seamless splicing correction method and device for an LED display screen, the method includes: determining a preset number of required target sub-screens to be corrected and a public area in at least one sub-screen corresponding to the LED display screen; respectively multiplying the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient from the center position of the public area upwards and downwards or leftwards and rightwards; calculating a second average brightness value between all the lamp points in other areas of the target sub-screen and the first average brightness value of all the lamp points in the public area; and correcting the measured brightness value of each lamp point in the target sub-screen according to the second average brightness value so as to correct all the lamp points after traversing the LED display screen. According to the scheme, the brightness of the public area is subjected to gradient adjustment, and the brightness of the sub-screen is adjusted through the correction coefficient of the public area, so that the problem that bright and dark lines appear at the box body boundary line when each box body of the LED display screen is corrected respectively is solved. And the correction process is not limited by the maximum carrying capacity of the PC end and the shape of the LED display screen, so that the adjusted brightness transition is more uniform, and the brightness measurement error caused by different camera placing positions is eliminated.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A seamless splicing correction method for an LED display screen is applied to a server, and comprises the following steps:
determining a preset number of required target sub-screens to be corrected in at least one sub-screen corresponding to the LED display screen according to the loading capacity of a server, and an overlapped common area between each sub-screen and an adjacent sub-screen in the preset number of required target sub-screens, wherein the common area is positioned in the target sub-screens;
if the position relation between the two sub-screens corresponding to the public area is up-down adjacent, respectively multiplying the measured brightness value of each row of the lamp points by a preset percentage which is gradually increased in a gradient manner from the center position of the public area upwards and downwards to obtain a first brightness value of each lamp point in the public area;
if the position relation between the two sub-screens corresponding to the public area is left-right adjacent, multiplying the measured brightness value of each row of the lamp points by a preset percentage which is gradually increased in a gradient manner from the center position to the left and the right respectively to obtain a second brightness value of each lamp point in the public area;
calculating second average brightness values between the first average brightness values of all the lamp points in the public area and the measured brightness values of all the lamp points in other areas according to the first average brightness value and/or the second average brightness value corresponding to each lamp point in the public area and the measured brightness value of each lamp point in other areas of the target sub-screen;
and correcting the measured brightness value of each lamp point in the target sub-screen according to the second average brightness value, so that the measured brightness value of each lamp point in the LED display screen is corrected after each sub-screen of the LED display screen is traversed to be the target sub-screen.
2. The method for correcting seamless splicing of LED display screens according to claim 1, wherein the step of determining a preset number of required target sub-screens to be corrected in at least one sub-screen corresponding to the LED display screen and a common overlapping area between each sub-screen and an adjacent sub-screen in the preset number of required target sub-screens comprises the following steps:
dividing the LED display screen into at least one sub-screen according to the number of sending cards connected with the LED display screen;
determining a preset number of required target sub-screens to be corrected according to the loading capacity of the server;
and dividing at least one subarea area on each sub-screen, and determining the size of the public area according to the number of the subarea areas.
3. The method for correcting seamless splicing of LED display screens according to claim 2, wherein the dividing at least one subarea area on each sub-screen and determining the size of the common area according to the number of the subarea areas comprises:
dividing each sub-screen into at least one partition area, wherein the size of each partition area is equal;
determining a common area overlapped between each sub-screen and an adjacent sub-screen in the target sub-screens with the preset quantity requirement, wherein the size of each common area is equal;
and determining the size of the public area according to the number of the subarea areas covering the public area and the size of the subarea areas.
4. The method of claim 1, wherein multiplying the measured brightness values of each row of light points by a predetermined percentage in a gradient increasing manner from the center of the common area up and down respectively comprises:
determining a center position of the common area;
respectively multiplying the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient upwards and downwards from the central position;
and multiplying the measured brightness values of each row of the lamp points by a preset percentage which is increased in gradient from the center position to the left and the right respectively, wherein the preset percentage comprises the following steps:
determining a center position of the common area;
and multiplying the measured brightness value of each row of the lamp points by a preset percentage which is increased in gradient respectively leftwards and rightwards from the central position.
5. The method according to claim 1, wherein the correcting the measured brightness value of each lamp point in the target sub-screen according to the second average brightness value to correct the measured brightness value of each lamp point in the LED display screen after traversing each sub-screen of the LED display screen as the target sub-screen comprises:
adjusting the value of the measured brightness value of each lamp point in the target sub-screen to the value of the second average brightness value to finish the correction of the target sub-screen;
and continuously determining the sub-screens to be corrected with the preset number of requirements as a next group of target sub-screens until the correction of the measured brightness value of each lamp point in the LED display screen is completed.
6. The utility model provides a seamless concatenation correcting unit of LED display screen which characterized in that is applied to the server, the device includes:
the screen dividing module is used for determining a preset number of required target sub-screens to be corrected in at least one sub-screen corresponding to the LED display screen according to the loading capacity of the server and a common area overlapped between each sub-screen and an adjacent sub-screen in the preset number of required target sub-screens, wherein the common area is positioned in the target sub-screens;
the upper and lower adjusting module is connected with the screen dividing module, and if the position relationship between the two sub-screens corresponding to the public area is that the two sub-screens are adjacent up and down, the measured brightness values of each row of the lamp points are respectively multiplied by a preset percentage which is increased in a gradient manner from the center position of the public area upwards and downwards to obtain a first brightness value of each lamp point in the public area;
the left and right adjusting module is connected with the screen dividing module, and if the position relationship between the two sub-screens corresponding to the public area is left and right adjacent, the measured brightness value of each row of the lamp points is respectively multiplied by a preset percentage which is increased in a gradient manner from the center position to the left and the right respectively so as to obtain a second brightness value of each lamp point in the public area;
a brightness value correction module which is respectively connected with the up-down adjustment module and the left-right adjustment module, and calculates a second average brightness value between the first average brightness value of all the lamp points in the public area and the measured brightness value of all the lamp points in other areas according to the first average brightness value of the first brightness value and/or the second brightness value corresponding to each lamp point in the public area and the measured brightness value of each lamp point in other areas of the target sub-screen;
and the whole screen correction module is connected with the brightness value correction module and is used for correcting the measured brightness value of each lamp point in the target sub-screen according to the second average brightness value so as to correct the measured brightness value of each lamp point in the LED display screen after traversing each sub-screen of the LED display screen as the target sub-screen.
7. The device for correcting seamless splicing of the LED display screen according to claim 6, wherein the screen dividing module comprises:
the first sub-screen dividing unit is used for dividing the LED display screen into at least one sub-screen according to the number of sending cards connected with the LED display screen;
the target sub-screen determining unit is connected with the first sub-screen dividing unit and determines a preset number of target sub-screens to be corrected according to the loading capacity of the server;
and the partition unit is connected with the target sub-screen determining unit, divides at least one partition area on each sub-screen respectively, and determines the size of the public area according to the number of the partition areas.
8. The device for correcting seamless splicing of the LED display screen according to claim 7, wherein the partition unit:
dividing each sub-screen into at least one partition area, wherein the size of each partition area is equal;
determining a common overlapping area between each sub-screen and an adjacent sub-screen in the target sub-screens with the preset number of requirements;
and determining the size of the public area according to the number of the subarea areas covering the public area and the size of the subarea areas.
9. The seamless splicing correction device for the LED display screen according to claim 6, wherein the up-down adjustment module comprises:
a first position determination unit that determines a center position of the common area;
the upper and lower adjusting unit is connected with the first position determining unit, and respectively multiplies the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient upwards and downwards from the central position;
and, the left-right adjustment module includes:
a second position determination unit that determines a center position of the common area;
and the left and right adjusting unit is connected with the second position determining unit and respectively multiplies the measured brightness value of each row of lamp points by a preset percentage which is gradually increased in gradient from the center position to the left and the right.
10. The seamless splicing correction device for the LED display screen according to claim 6, wherein the whole screen correction module comprises:
the target sub-screen correcting unit is used for adjusting the value of the measured brightness value of each lamp point in other areas of the target sub-screen to the value of the second average brightness value to finish the correction of the target sub-screen;
and the circulating unit is connected with the target sub-screen correcting unit and continuously determines the sub-screens to be corrected with the preset quantity requirements as the next group of target sub-screens until the correction of the measured brightness value of each lamp point in the LED display screen is completed.
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| CN114038410B (en) * | 2021-11-26 | 2022-09-30 | 卡莱特云科技股份有限公司 | LED display screen automatic correction method and device based on stepping motor |
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| CN106796769B (en) * | 2014-10-08 | 2019-08-20 | 株式会社半导体能源研究所 | Display device |
| CN105405392B (en) * | 2015-12-07 | 2018-03-27 | 西安诺瓦电子科技有限公司 | Bright chroma disparity compensation method in by stages in LED display Subarea calibration |
| CN206021810U (en) * | 2016-08-26 | 2017-03-15 | 上海锐丽科技股份有限公司 | A kind of seamless spliced screen |
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