CN114927092A - Method, device and system for correcting visual angle difference of LED display screen - Google Patents
Method, device and system for correcting visual angle difference of LED display screen Download PDFInfo
- Publication number
- CN114927092A CN114927092A CN202210605008.5A CN202210605008A CN114927092A CN 114927092 A CN114927092 A CN 114927092A CN 202210605008 A CN202210605008 A CN 202210605008A CN 114927092 A CN114927092 A CN 114927092A
- Authority
- CN
- China
- Prior art keywords
- angle difference
- display screen
- led display
- current
- difference coefficient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000007 visual effect Effects 0.000 title claims abstract description 154
- 238000000034 method Methods 0.000 title claims abstract description 57
- 239000011159 matrix material Substances 0.000 claims abstract description 96
- 238000004364 calculation method Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a method, a device and a system for correcting visual angle difference of an LED display screen, wherein the method comprises the following steps: acquiring a current X-Y direction angle between a camera and a target LED display screen in real time; acquiring a visual angle difference coefficient matrix corresponding to a target LED display screen, and determining a current visual angle difference coefficient according to a current X-Y direction angle and the visual angle difference coefficient matrix corresponding to the target LED display screen; correcting the brightness of a current to-be-displayed picture of the target LED display screen according to the current visual angle difference coefficient to obtain the current to-be-displayed picture with the visual angle difference eliminated; and sending the current to-be-displayed picture with the eliminated visual angle difference to a receiving card of the target LED display screen, and controlling the target LED display screen to display the current to-be-displayed picture with the eliminated visual angle difference through the receiving card. The method, the device and the system provided by the invention can monitor the shooting visual angle of the camera in real time, process and display the display picture of the LED display screen in real time, ensure that the shooting picture eliminates the visual angle difference and ensure the continuity of the picture.
Description
Technical Field
The invention relates to the field of LED display effect processing, in particular to a method, a device and a system for correcting visual angle difference of an LED display screen.
Background
With the rapid development of display technologies, the application of display screens is no longer limited to small-area screens such as mobile phones, tablets and computers, and extra-large-area display screens of dozens or even hundreds of square meters are slowly brought into the market, so that virtual XR shooting is gradually started.
However, due to the structural factor of the LED lamp, the LED display screen has the problem of visual angle, namely, the front side has high viewing brightness and the side has low viewing brightness. When the camera is used for shooting the LED display screen, the problem that the brightness of the pictures of the LED display screen shot by the camera at different shooting visual angles is inconsistent can be caused due to the problem of the visual angle of the LED display screen; for the XR virtual shooting of the stereoscopic screen built by the LED display screens of the same type, when the same camera shoots at least two non-coplanar LED display screens contained in the stereoscopic screen, due to the fact that the non-coplanar LED display screens have different shooting visual angles and inconsistent brightness, display pictures among the non-coplanar LED display screens shot by the camera are discontinuous.
If the above problem occurs in the XR virtual photographing process, more time cost and money cost are needed to solve the problem at a later stage. Therefore, a new technical solution to solve the above problems needs to be found in the art.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method, an apparatus and a system for correcting a viewing angle difference of an LED display.
The method for correcting the visual angle difference of the LED display screen comprises the following steps:
acquiring a current X-Y direction angle between a camera and a target LED display screen in real time, wherein the X direction angle is a horizontal angle, and the Y direction angle is a vertical angle;
acquiring a visual angle difference coefficient matrix corresponding to a target LED display screen, and determining a current visual angle difference coefficient according to a current X-Y direction angle and the visual angle difference coefficient matrix corresponding to the target LED display screen;
correcting the brightness of a current to-be-displayed picture of the target LED display screen according to the current visual angle difference coefficient to obtain the current to-be-displayed picture with the visual angle difference eliminated;
and sending the current to-be-displayed picture with the eliminated visual angle difference to a receiving card of the target LED display screen, and controlling the target LED display screen to display the current to-be-displayed picture with the eliminated visual angle difference through the receiving card.
Further, the visual angle difference coefficient matrix is pre-stored in a sending card or a broadcast control server corresponding to the target LED display screen, and the visual angle difference coefficient matrix corresponding to the target LED display screen is obtained as follows:
and after the current to-be-displayed picture of the target LED display screen is sent to a sending card or a broadcasting control server corresponding to the target LED display screen, obtaining a visual angle difference coefficient matrix corresponding to the target LED display screen from the sending card or the broadcasting control server corresponding to the target LED display screen.
Further, each type of LED display screen corresponds to a viewing angle difference coefficient matrix, and for a certain type of LED display screen, the method for generating the corresponding viewing angle difference coefficient matrix includes:
with the center point of the LED display screen of the type as a reference point, presetting brightness acquisition equipment on a straight line which passes through the center point of the LED display screen and is vertical to the LED display screen;
keeping the setting position of the brightness acquisition equipment unchanged, and facing the brightness acquisition equipment to the central point of the LED display screen to ensure that the X-Y direction angle between the brightness acquisition equipment and the LED display screen is (0 DEG and 0 DEG), acquiring to obtain a corresponding reference brightness value, wherein the reference brightness value comprises a red light reference brightness value RL (0,0) Reference brightness value GL of green lamp (0,0) Blue lamp reference brightness value BL (0,0) ；
Changing the X-Y direction angle between the brightness acquisition equipment and the LED display screen, and respectively acquiring corresponding acquisition brightness values under a plurality of preset X-Y direction angles, wherein the acquisition brightness values comprise red light acquisition brightness values RL (x ， y) And collecting brightness value GL by using green light (x，y) Blue light collection brightness value BL (x，y) ；
Calculating to obtain corresponding view angle difference coefficients under each preset X-Y direction angle according to a view angle difference coefficient calculation formula and the collected brightness values under each preset X-Y direction angle, wherein the view angle difference coefficients comprise red light view angle difference coefficients CoefR (x，y) Green light angle difference coefficient CoefG (x，y) Blue lamp visual angle difference coefficient CoefB (x，y) Wherein the viewing angle difference coefficient calculation formula is as follows: the view angle difference coefficient is the reference brightness value/collection brightness value;
and taking a matrix formed by the viewing angle difference coefficients under each preset X-Y direction angle as a viewing angle difference coefficient matrix corresponding to the LED display screen.
Further, acquiring a viewing angle difference coefficient matrix corresponding to the target LED display screen, and determining the current viewing angle difference coefficient according to the current X-Y direction angle and the viewing angle difference coefficient matrix corresponding to the target LED display screen includes:
judging whether a viewing angle difference coefficient corresponding to the current X-Y direction angle exists in the viewing angle difference coefficient matrix, and if so, taking the viewing angle difference coefficient corresponding to the current X-Y direction angle as the current viewing angle difference coefficient;
and if not, calculating to obtain a view angle difference coefficient corresponding to the current X-Y direction angle as a current view angle difference coefficient by a cubic spline interpolation method and by using a view angle difference coefficient matrix corresponding to the target LED display screen.
Further, for a certain type of LED display screen, the method for generating the corresponding viewing angle difference coefficient matrix further includes:
calculating to obtain the viewing angle difference coefficient under the residual X-Y direction angles according to the viewing angle difference coefficient under each preset X-Y direction angle by a cubic spline interpolation method;
and taking a matrix formed by the viewing angle difference coefficients under the preset X-Y direction angles and the viewing angle difference coefficients under the residual X-Y direction angles as a viewing angle difference coefficient matrix corresponding to the LED display screen.
Further, acquiring a viewing angle difference coefficient matrix corresponding to the target LED display screen, and determining the current viewing angle difference coefficient according to the current X-Y direction angle and the viewing angle difference coefficient matrix corresponding to the target LED display screen includes:
and reading a visual angle difference coefficient corresponding to the current X-Y direction angle from a visual angle difference coefficient matrix corresponding to the target LED display screen, and determining the visual angle difference coefficient as the current visual angle difference coefficient.
Further, performing brightness correction on the current to-be-displayed picture of the target LED display screen according to the current viewing angle difference coefficient, and obtaining the current to-be-displayed picture without the viewing angle difference includes:
correcting the current brightness value of each lamp point in the current picture to be displayed into a target brightness value so as to obtain the current picture to be displayed with the visual angle difference eliminated;
and the target brightness value is the current brightness value and the current view difference coefficient.
The invention also provides a device for correcting the visual angle difference of the LED display screen, which comprises a camera direction angle acquisition module, a visual angle difference coefficient matrix acquisition module, a visual angle difference coefficient determination module, a display picture correction module and a sending module, wherein:
the camera direction angle acquisition module is connected with the visual angle difference coefficient determination module and is used for acquiring the current X-Y direction angle between the camera and the target LED display screen in real time, wherein the X direction angle is a horizontal angle, and the Y direction angle is a vertical angle;
the visual angle difference coefficient matrix acquisition module is connected with the visual angle difference coefficient determination module and is used for acquiring a visual angle difference coefficient matrix corresponding to the target LED display screen;
the visual angle difference coefficient determining module is connected with the display picture correcting module and is used for determining a current visual angle difference coefficient according to the current X-Y direction angle and a visual angle difference coefficient matrix corresponding to the target LED display screen;
the display picture correction module is connected with the sending module and used for correcting the brightness of the current picture to be displayed of the target LED display screen according to the current visual angle difference coefficient to obtain the current picture to be displayed with the visual angle difference eliminated;
and the sending module is used for sending the current to-be-displayed picture with the visual angle difference eliminated to a receiving card of the target LED display screen, and controlling the target LED display screen to display the current to-be-displayed picture with the visual angle difference eliminated through the receiving card.
Further, the viewing angle difference coefficient matrix is pre-stored in a sending card or a broadcast server corresponding to the target LED display screen, and the viewing angle difference coefficient matrix obtaining module obtains the viewing angle difference coefficient matrix corresponding to the target LED display screen as follows:
and after the current to-be-displayed picture of the target LED display screen is sent to a sending card or a broadcasting control server corresponding to the target LED display screen, obtaining a visual angle difference coefficient matrix corresponding to the target LED display screen from the sending card or the broadcasting control server corresponding to the target LED display screen.
The invention also provides a system for correcting the visual angle difference of the LED display screen, which comprises a broadcast control server, a transmitting card and the LED display screen, wherein the broadcast control server comprises:
the broadcasting control server is connected with a sending card, and the sending card is connected with a receiving card in the LED display screen;
and the broadcast control server is used for obtaining the current to-be-displayed picture without the visual angle difference according to the method for correcting the visual angle difference of the LED display screen, and sending the current to-be-displayed picture without the visual angle difference to a receiving card in the LED display screen through a sending card so as to control the LED display screen to display the current to-be-displayed picture without the visual angle difference through the receiving card.
The method, the device and the system for correcting the visual angle difference of the LED display screen, provided by the invention, at least have the following beneficial effects:
(1) the method comprises the steps of obtaining a current X-Y direction angle (namely a camera view angle) between a camera and a target LED display screen, correcting the brightness of a current picture to be displayed of the LED display screen according to the current X-Y direction angle to eliminate view angle difference, obtaining a receiving card which sends the current picture to be displayed after the view angle difference is eliminated to the target LED display screen, controlling the target LED display screen to display the current picture to be displayed after the view angle difference is eliminated through the receiving card, enabling a picture obtained by shooting through the camera to be the picture of the target LED display screen after the view angle difference is eliminated, enabling the brightness of pictures obtained by shooting through the camera at different shooting view angles to be consistent, improving the picture shooting effect of the camera, and processing the pictures to be displayed of each LED display screen in the stereoscopic screen through the correction method for the view angle difference of the LED display screen for the stereoscopic screen built by using the same type of LED display screen, so that the pictures of different LED display screens of the stereoscopic screen are continuous under the camera shooting visual angle.
(2) According to the invention, the current X-Y direction angle between the camera and the target LED display screen is acquired in real time, and the display picture of the target LED display screen is adjusted in real time, so that the picture to be displayed of the target LED display screen can be corrected in time as long as the shooting visual angle of the camera is changed in the shooting process, and the brightness of the display picture of the target LED display screen shot under the shooting visual angle of the camera is ensured to be consistent no matter how the shooting visual angle of the camera is changed.
(3) The current picture to be displayed is corrected before the receiving card to obtain the current picture to be displayed after the visual angle difference is eliminated, and then the current picture to be displayed after the visual angle difference is eliminated is directly sent to the receiving card, so that the correction work is not needed in the receiving card, and the problem that the picture to be displayed cannot be applied in real time, so that the display process of the LED display screen is discontinuous, which is caused by the fact that the correction work of the picture to be displayed is carried out in the receiving card, is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flowchart illustrating a method for correcting a viewing angle difference of an LED display screen according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a camera and a target LED display screen in an embodiment of the invention;
FIG. 3 is a schematic side view of a camera and a target LED display screen in an embodiment of the invention;
FIG. 4 is a flowchart illustrating a method for generating a view difference coefficient matrix according to an embodiment of the invention;
FIG. 5 is a flow chart of a method for determining a current view difference coefficient according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating a method for generating a view difference coefficient matrix according to another embodiment of the present invention;
FIG. 7 is a schematic view of a device for correcting the viewing angle difference of an LED display screen according to an embodiment of the present invention;
FIG. 8 is a schematic view of a system for correcting viewing angle differences of an LED display screen according to an embodiment of the present invention;
701-camera direction angle acquisition module, 702-visual angle difference coefficient matrix acquisition module, 703-visual angle difference coefficient determination module, 704-display picture correction module, 705-sending module, 801-broadcast control server, 802-sending card and 803-LED display screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In an embodiment of the present invention, as shown in fig. 1, the method for correcting the viewing angle difference of the LED display screen in the present invention includes the following steps:
step S101: and acquiring the current X-Y direction angle between the camera and the target LED display screen in real time.
Wherein the X-direction angle is a horizontal angle, and the Y-direction angle is a vertical angle.
Specifically, fig. 2 is a schematic top view of the camera and the target LED display screen, fig. 3 is a schematic side view of the camera and the target LED display screen, as shown in fig. 2, an X-direction angle between the camera and the target LED display screen is θ 1, and as shown in fig. 3, a Y-direction angle between the camera and the target LED display screen is θ 2. That is, the current X-Y direction angle between the camera and the target LED display screen is represented as (θ 1, θ 2), and further, in the actual camera shooting process, if there is only a horizontal movement or a vertical movement in the camera shooting process, only the angle of the camera in the horizontal direction or the vertical direction may be obtained here.
More specifically, in this step, static position information or dynamic position information of the shooting camera can be obtained by a professional camera tracking system (such as a positioning tracker), and the horizontal and vertical angles between the camera and the LED display screen are determined by the position information; the professional camera tracking system is applied to an XR virtual shooting scene and can be used for acquiring the movement angle of the camera.
Step S102: and acquiring a visual angle difference coefficient matrix corresponding to the target LED display screen, and determining the current visual angle difference coefficient according to the current X-Y direction angle and the visual angle difference coefficient matrix corresponding to the target LED display screen.
Specifically, the viewing angle difference coefficient matrix is pre-stored in a storage medium (such as flash) in a sending card or a broadcast control server corresponding to the target LED display screen, and the obtained viewing angle difference coefficient matrix corresponding to the target LED display screen is: and after a current to-be-displayed picture of the target LED display screen is sent to a sending card or a broadcasting control server corresponding to the target LED display screen, obtaining a visual angle difference coefficient matrix corresponding to the target LED display screen from the sending card or the broadcasting control server corresponding to the target LED display screen.
The viewing angle difference coefficient matrix comprises a plurality of viewing angle difference coefficients, and each viewing angle difference coefficient corresponds to one X-Y direction angle.
More specifically, in the present invention, each type of LED display screen corresponds to a viewing angle difference coefficient matrix, that is, the viewing angle difference coefficient matrices corresponding to the same type of LED display screen are also the same, where the same type of LED display screen refers to a batch production series of LED display screens with the same size and structure.
In the actual processing, a corresponding visual angle difference coefficient matrix can be generated for each type of LED display screen, and during subsequent use, the corresponding visual angle difference coefficient matrix is selected and stored in a sending card or a broadcast control server corresponding to the LED display screen according to the type of the LED display screen.
Step S103: and correcting the brightness of the current to-be-displayed picture of the target LED display screen according to the current visual angle difference coefficient to obtain the current to-be-displayed picture with the visual angle difference eliminated.
Specifically, in this step, the brightness correction of the current picture to be displayed refers to correcting brightness value data corresponding to each lamp point in the current picture to be displayed.
Further, performing brightness correction on the current to-be-displayed picture of the target LED display screen according to the current viewing angle difference coefficient, and obtaining the current to-be-displayed picture without the viewing angle difference includes:
correcting the current brightness value of each lamp point in the current picture to be displayed into a target brightness value so as to obtain the current picture to be displayed with the visual angle difference eliminated; and the target brightness value is the current brightness value and the current view difference coefficient. The current brightness value of each lamp point in the picture to be displayed forms a brightness matrix. In this step, a calculation is performed according to the formula target brightness value, i.e., the current brightness value and the current viewing angle difference coefficient, that is, a brightness matrix formed by the target brightness values of the respective light points in the to-be-displayed image is obtained.
Specifically, the current brightness value of each light point in the current to-be-displayed picture actually refers to the brightness value of each pixel point in the to-be-displayed picture. Step S104: and sending the current to-be-displayed picture with the eliminated visual angle difference to a receiving card of the target LED display screen, and controlling the target LED display screen to display the current to-be-displayed picture with the eliminated visual angle difference through the receiving card.
According to the method for correcting the visual angle difference of the LED display screen, the current X-Y direction angle (namely the camera visual angle) between the camera and the target LED display screen is obtained, the brightness of the current to-be-displayed picture of the LED display screen is corrected according to the current X-Y direction angle so as to eliminate the visual angle difference, the current to-be-displayed picture with the visual angle difference eliminated is obtained and sent to the receiving card of the target LED display screen, and the target LED display screen is controlled by the receiving card to display the current to-be-displayed picture with the visual angle difference eliminated, so that the picture shot by the camera is the picture with the visual angle difference eliminated by the target LED display screen, the brightness of the pictures shot by the camera at different shooting visual angles is consistent, and the picture shooting effect of the camera is improved. In the XR virtual shooting scene, a stereoscopic screen built by using the same type of LED display screens is shot, and the pictures to be displayed of each LED display screen in the stereoscopic screen are processed by using the method for correcting the visual angle difference of the LED display screens, so that the pictures of different LED display screens of the stereoscopic screen are continuous under the camera shooting visual angle. Further, in the XR virtual shooting scene, a picture obtained by shooting through the camera is displayed in a display terminal of a television user.
In addition, because the current X-Y direction angle between the camera and the target LED display screen is acquired in real time, and the display picture of the target LED display screen is adjusted in real time, the picture to be displayed of the target LED display screen can be corrected in time as long as the shooting visual angle of the camera is changed in the shooting process, and the brightness of the display picture of the target LED display screen shot by the camera under the shooting visual angle is ensured to be consistent no matter how the shooting visual angle of the camera is changed.
In addition, because the current picture to be displayed is corrected before the card is received to obtain the current picture to be displayed after the visual angle difference is eliminated, the current picture to be displayed after the visual angle difference is eliminated is subsequently and directly sent to the receiving card, and the receiving card does not need to carry out any correction work (if the brightness and the chroma of the display picture are corrected in the receiving card, the LED display screen needs to be lightened again in order to display the corrected display picture on the LED display screen, so that the short-time black screen phenomenon of the LED display screen can be caused), thereby avoiding the problem that the playing process of the display picture of the LED display screen is discontinuous due to the short-time black screen phenomenon of the LED display screen caused by the correction work of the picture to be displayed in the receiving card.
In another embodiment of the present invention, as shown in fig. 4, for a certain type of LED display screen, the method for generating the viewing angle difference coefficient matrix corresponding to the LED display screen includes the following steps:
step S401: the center point of the LED display screen of the type is used as a reference point, and the brightness acquisition equipment is arranged on a straight line which penetrates through the center point of the LED display screen and is vertical to the LED display screen in advance.
Specifically, in this embodiment, the brightness acquiring device may be a light gun or other device for measuring brightness.
Step S402: keeping the setting position of the brightness acquisition equipment unchanged, and enabling the brightness acquisition equipment to be opposite to the central point of the LED display screen, so that the X-Y direction angle between the brightness acquisition equipment and the LED display screen is (0 degree and 0 degree), and acquiring to obtain a corresponding reference brightness value.
Wherein the reference brightness value comprises red light reference brightness value RL (0,0) Reference brightness value GL of green lamp (0,0) Blue lamp reference brightness value BL (0,0) 。
Specifically, when the X-Y direction angle is set to (0 ° or 0 °), the viewing angle difference coefficient is (1, 1, 1), that is, the red light viewing angle difference coefficient is 1, the green light viewing angle difference coefficient is 1, and the blue light viewing angle difference coefficient is 1.
Step S403: and changing the X-Y direction angle between the brightness acquisition equipment and the LED display screen, and respectively acquiring the acquisition brightness values corresponding to a plurality of preset X-Y direction angles.
Wherein the collected brightness value comprises a red light collected brightness value RL (x，y) Collecting brightness value GL by green lamp (x，y) Blue light collection brightness value BL (x，y) 。
Step S404: and calculating to obtain the corresponding view angle difference coefficient under each preset X-Y direction angle according to the view angle difference coefficient calculation formula and the acquisition brightness value under each preset X-Y direction angle.
Wherein the viewing angle difference coefficient comprises a red light viewing angle difference coefficient CoefR (x，y) Green light angle difference coefficient CoefG (x，y) Blue lamp visual angle difference coefficient CoefB (x，y) 。
The visual angle difference coefficient calculation formula is as follows: the view angle difference coefficient is the reference brightness value/collection brightness value;
it should be understood that the red light viewing angle difference coefficient is red light reference luminance value/red light collection luminance value, and the viewing angle difference coefficients of other colors are the same.
Specifically, as shown in table 1 below, the step length of the angle difference 45 is used as the interval (where the angles of all the intervals in table 1 may be understood as the selected feature point, and the viewing angle difference coefficient matrix corresponding to the feature point is the feature point matrix), so that the viewing angle difference coefficient obtained by calculating the acquired brightness value corresponding to each X-Y direction angle is acquired, it should be understood that, in the present invention, the step length may be set by a technician according to an actual situation, or the step length of the angle difference 5 may be used as the interval, or other step lengths may be used as the interval, which is not limited by the present invention.
TABLE 1 viewing angle difference coefficient at a plurality of preset X-Y directional angles
Step S405: and taking a matrix formed by the viewing angle difference coefficients under each preset X-Y direction angle as a viewing angle difference coefficient matrix corresponding to the LED display screen.
In another embodiment of the present invention, as shown in fig. 5, on the basis of the previous embodiment, the step S102 includes the following steps:
step S1021: it is determined whether there is a view difference coefficient corresponding to the current X-Y direction angle in the view difference coefficient matrix, if so, step S1022 is performed, otherwise, step S1023 is performed.
Step S1022: and taking the view angle difference coefficient corresponding to the current X-Y direction angle as the current view angle difference coefficient.
Step S1023: and calculating to obtain a visual angle difference coefficient corresponding to the current X-Y direction angle as a current visual angle difference coefficient by utilizing a visual angle difference coefficient matrix corresponding to the target LED display screen through a cubic spline interpolation method.
Specifically, in this step, a plurality of feature points (viewing angle difference coefficients and X-Y direction angles corresponding to the viewing angle difference coefficients) may be selected from a viewing angle difference coefficient matrix corresponding to the target LED display screen to obtain a two-dimensional cubic spline interpolation function, the current X-Y direction angles are put into the two-dimensional cubic spline interpolation function, and a viewing angle difference coefficient corresponding to the current X-Y direction angles is obtained through calculation. Further, it should be understood that, for each color lamp point, a corresponding two-dimensional cubic spline interpolation function is obtained, and the current X-Y direction angle is respectively to be entered into the corresponding two-dimensional cubic spline interpolation function of each color lamp point, so as to obtain the view angle difference coefficient of each color lamp point in the current X-Y direction angle.
More specifically, a parameter value in each cubic spline interpolation function can be obtained through known 4X-Y direction angles and viewing angle difference coefficients corresponding to the X-Y direction angles, a two-dimensional cubic spline interpolation function model is constructed through a plurality of cubic spline interpolation functions, and then only the value of X, Y needs to be input, namely, the corresponding viewing angle difference coefficient c can be obtained through calculation of values of 16 points around the value of an interpolation point X, Y (the 16 points refer to 16X-Y direction angles around the current X-Y direction angle, the 16X-Y direction angles around the current X-Y direction angle can be determined through the ordering of the direction angles in table 1, and the 16 point values are viewing angle difference coefficients corresponding to the 16X-Y direction angles).
Specifically, it is provided
a(x)＝A0x 3 +A1x 2 +A2x+A3， b(x)＝B0x 3 +B1x 2 +B2x+B3，c(x)＝C0x 3 +C1x 2 +C2x+C3，d(x)＝D0x 3 +D1x 2 + D2x + D3, where l is the spacing between feature points.
The known 4X-Y direction angles and their corresponding view angle difference coefficients are used to calculate the parameter values in a (X), b (X), c (X), d (X).
Then, a (x), b (x), c (x), d (x) are used to construct a two-dimensional cubic spline interpolation function:
wherein, the view angle difference coefficient c is h (X, Y), and the view angle difference coefficients (h) of the current X-Y direction angle and 16X-Y direction angles around the current X-Y direction angle are used subsequently i-1，j-1 、h i，j-1 、h i+1，j-1 、h i+2，j-1 、h i-1，j 、h i，j 、h i+1，j 、h i+2，j 、h i-1，j+1 、h i，j+1 、h i+1，j+1 、h i+2，j+1 、h i-1，j+2 、h i，j+2 、h i+1，j+2 、h i+2，j+2 ) Substituting the obtained value into the two-dimensional cubic spline interpolation function to calculate and obtain a corresponding view angle difference coefficient c. In this embodiment, only the matrix formed by the viewing angle difference coefficients at the preset X-Y direction angle is pre-stored, and when the viewing angle difference coefficient corresponding to the current X-Y direction angle is subsequently determined, the matrix is obtained by calculation using a cubic spline interpolation method, so that the storage space of the sending card or the broadcast control server occupied by the viewing angle difference coefficient matrix can be reduced.
Meanwhile, the visual angle is a gradually changing relation, the visual angle difference coefficient corresponding to the visual angle is calculated by using a two-dimensional cubic spline interpolation method, and finally the picture to be displayed is corrected by using the visual angle difference coefficient.
In another embodiment of the present invention, as shown in fig. 6, for a certain type of LED display screen, the method for generating the corresponding viewing angle difference coefficient matrix further includes:
step S406: calculating to obtain the viewing angle difference coefficient under the residual X-Y direction angles according to the viewing angle difference coefficient under each preset X-Y direction angle by a cubic spline interpolation method;
step S405 in fig. 4 is replaced with: and taking a matrix formed by the viewing angle difference coefficient under the preset X-Y direction angle and the viewing angle difference coefficients under the residual X-Y direction angles as a viewing angle difference coefficient matrix corresponding to the LED display screen.
Further, on the basis of the method for generating the viewing angle difference coefficient matrix shown in fig. 6, step S102 is: and reading a visual angle difference coefficient corresponding to the current X-Y direction angle from a visual angle difference coefficient matrix corresponding to the target LED display screen, and determining the visual angle difference coefficient as a current visual angle difference coefficient.
That is, in this embodiment, the view angle difference coefficients corresponding to all the X-Y direction angles are calculated as the view angle difference coefficient matrix by using the cubic spline interpolation method, and stored. After the current X-Y direction angle between the camera and the target LED display screen is obtained subsequently, the current X-Y direction angle is directly obtained from the prestored visual angle difference coefficient matrix without calculation, so that the determination efficiency of the visual angle difference coefficient corresponding to the current X-Y direction angle is improved, and the visual angle difference elimination efficiency of the LED display screen is further improved. Of course, it should be understood that the method in this embodiment is applicable when the storage medium has a sufficiently large space.
The present invention further provides a device for correcting the viewing angle difference of an LED display screen, as shown in fig. 7, the device includes a camera direction angle obtaining module 701, a viewing angle difference coefficient matrix obtaining module 702, a viewing angle difference coefficient determining module 703, a display screen correcting module 704, and a sending module 705, wherein:
the camera direction angle acquisition module 701 is connected with the visual angle difference coefficient determination module 703 and is used for acquiring the current X-Y direction angle between the camera and the target LED display screen in real time, wherein the X direction angle is a horizontal angle, and the Y direction angle is a vertical angle;
the viewing angle difference coefficient matrix obtaining module 702 is connected to the viewing angle difference coefficient determining module 703, and is configured to obtain a viewing angle difference coefficient matrix corresponding to the target LED display screen.
A viewing angle difference coefficient determining module 703, connected to the display frame modifying module 704, for determining a current viewing angle difference coefficient according to the current X-Y direction angle and a viewing angle difference coefficient matrix corresponding to the target LED display screen;
the display picture correction module 704 is connected with the sending module 705 and is used for performing brightness correction on a current to-be-displayed picture of the target LED display screen according to the current visual angle difference coefficient to obtain the current to-be-displayed picture with the visual angle difference eliminated;
the sending module 705 is configured to send the current to-be-displayed picture with the viewing angle difference eliminated to a receiving card of the target LED display screen, and control the target LED display screen to display the current to-be-displayed picture with the viewing angle difference eliminated through the receiving card.
Further, the viewing angle difference coefficient matrix is pre-stored in a sending card or a broadcast server corresponding to the target LED display screen, and the viewing angle difference coefficient matrix obtaining module 702 obtains the viewing angle difference coefficient matrix corresponding to the target LED display screen as follows:
after a current to-be-displayed picture of a target LED display screen is sent to a sending card or a broadcast control server corresponding to the target LED display screen, a visual angle difference coefficient matrix corresponding to the target LED display screen is obtained from the sending card or the broadcast control server corresponding to the target LED display screen.
The present invention further provides a system for correcting the viewing angle difference of an LED display screen, as shown in fig. 8, the system includes a broadcast control server 801, a transmitting card 802 and an LED display screen 803, wherein:
the broadcast control server 801 is connected with a sending card 802, and the sending card 802 is connected with a receiving card in the LED display screen 803;
the broadcast control server 801 is configured to obtain the current to-be-displayed picture with the viewing angle difference eliminated according to the above method for correcting the viewing angle difference of the LED display screen, and send the current to-be-displayed picture with the viewing angle difference eliminated to a receiving card in the LED display screen 803 through the sending card 802, so as to control the LED display screen 803 to display the current to-be-displayed picture with the viewing angle difference eliminated through the receiving card.
The method, the device and the system for correcting the visual angle difference of the LED display screen provided by the invention have the advantages that the current X-Y direction angle (namely the visual angle of the camera) between the camera and the target LED display screen is obtained, the brightness of the current picture to be displayed of the LED display screen is corrected according to the current X-Y direction angle so as to eliminate the visual angle difference, the current picture to be displayed after the visual angle difference is eliminated is obtained and sent to the receiving card of the target LED display screen, the current picture to be displayed after the visual angle difference is eliminated is controlled to be displayed by the target LED display screen through the receiving card, so that the picture shot by the camera is the picture of the target LED display screen after the visual angle difference is eliminated, the brightness of the pictures shot by the camera at different shooting visual angles is consistent, the effect of the picture shot by the camera is improved, and for a three-dimensional screen built by using the same type of LED display screens, by utilizing the method for correcting the visual angle difference of the LED display screens, the picture to be displayed of each LED display screen in the stereoscopic screen is processed, so that the pictures of different LED display screens of the stereoscopic screen are continuous under the camera shooting visual angle. In addition, because the current X-Y direction angle between the camera and the target LED display screen is acquired in real time, and the display picture of the target LED display screen is adjusted in real time, the picture to be displayed of the target LED display screen can be corrected in time as long as the shooting visual angle of the camera is changed in the shooting process, and the brightness of the display picture of the target LED display screen shot by the camera under the shooting visual angle is ensured to be consistent no matter how the shooting visual angle of the camera is changed. In addition, the current picture to be displayed is corrected before the receiving card to obtain the current picture to be displayed after the visual angle difference is eliminated, and then the current picture to be displayed after the visual angle difference is eliminated is directly sent to the receiving card, so that the receiving card does not need to carry out any correction work (if the display picture is corrected in the receiving card, the LED display screen has a transient black screen phenomenon), and the problem that the LED display screen has the transient black screen phenomenon because the correction work of the picture to be displayed is carried out in the receiving card, and the display picture playing process of the LED display screen is discontinuous is avoided.
The terms and expressions used in the specification of the present invention are for illustration only and are not meant to be limiting. It will be appreciated by those skilled in the art that changes could be made to the details of the above-described embodiments without departing from the underlying principles thereof. The scope of the invention is, therefore, indicated by the appended claims, in which all terms are intended to be interpreted in their broadest reasonable sense unless otherwise indicated.
Claims (10)
1. A method for correcting the visual angle difference of an LED display screen is characterized by comprising the following steps:
acquiring a current X-Y direction angle between a camera and a target LED display screen in real time, wherein the X direction angle is a horizontal angle, and the Y direction angle is a vertical angle;
acquiring a visual angle difference coefficient matrix corresponding to the target LED display screen, and determining a current visual angle difference coefficient according to the current X-Y direction angle and the visual angle difference coefficient matrix corresponding to the target LED display screen;
correcting the brightness of the current to-be-displayed picture of the target LED display screen according to the current visual angle difference coefficient to obtain the current to-be-displayed picture with the visual angle difference eliminated;
and sending the current to-be-displayed picture with the eliminated visual angle difference to a receiving card of the target LED display screen, and controlling the target LED display screen to display the current to-be-displayed picture with the eliminated visual angle difference through the receiving card.
2. The method for correcting the viewing angle difference of the LED display screen according to claim 1, wherein the viewing angle difference coefficient matrix is pre-stored in a sending card or a broadcast server corresponding to the target LED display screen, and the obtaining of the viewing angle difference coefficient matrix corresponding to the target LED display screen is:
and after the current to-be-displayed picture of the target LED display screen is issued to a sending card or a broadcasting control server corresponding to the target LED display screen, acquiring a visual angle difference coefficient matrix corresponding to the target LED display screen from the sending card or the broadcasting control server corresponding to the target LED display screen.
3. The method for correcting the visual angle difference of the LED display screen according to claim 2, wherein each type of LED display screen corresponds to a visual angle difference coefficient matrix, and for a certain type of LED display screen, the method for generating the corresponding visual angle difference coefficient matrix comprises the following steps:
presetting brightness acquisition equipment on a straight line which passes through the center point of the LED display screen and is vertical to the LED display screen by taking the center point of the LED display screen of the type as a reference point;
keeping the setting position of the brightness acquisition equipment unchanged, and enabling the brightness acquisition equipment to be over against the central point of the LED display screen, so that the X-Y direction angle between the brightness acquisition equipment and the LED display screen is (0 degree and 0 degree), acquiring to obtain a corresponding reference brightness value, wherein the reference brightness valueThe values including a reference red light brightness value RL (0,0) Reference brightness value GL of green lamp (0,0) Blue light reference brightness value BL (0,0) ；
Changing the X-Y direction angle between the brightness acquisition equipment and the LED display screen, and respectively acquiring corresponding acquisition brightness values under a plurality of preset X-Y direction angles, wherein the acquisition brightness values comprise red light acquisition brightness values RL (x，y) And collecting brightness value GL by using green light (x，y) Blue light collection brightness value BL (x，y) ；
Calculating to obtain corresponding view angle difference coefficients under each preset X-Y direction angle according to a view angle difference coefficient calculation formula and the collection brightness value under each preset X-Y direction angle, wherein the view angle difference coefficients comprise red light view angle difference coefficients CoefR (x，y) Green light visual angle difference coefficient CoefG (x，y) Blue lamp visual angle difference coefficient CoefB (x，y) Wherein the viewing angle difference coefficient calculation formula is as follows: the view angle difference coefficient is the reference brightness value/collection brightness value;
and taking a matrix formed by the viewing angle difference coefficients under each preset X-Y direction angle as a viewing angle difference coefficient matrix corresponding to the LED display screen.
4. The method for correcting the viewing angle difference of the LED display screen according to claim 3, wherein the obtaining of the viewing angle difference coefficient matrix corresponding to the target LED display screen, and the determining of the current viewing angle difference coefficient according to the current X-Y direction angle and the viewing angle difference coefficient matrix corresponding to the target LED display screen includes:
judging whether a view angle difference coefficient corresponding to the current X-Y direction angle exists in the view angle difference coefficient matrix, and if so, taking the view angle difference coefficient corresponding to the current X-Y direction angle as a current view angle difference coefficient;
and if not, calculating to obtain a view angle difference coefficient corresponding to the current X-Y direction angle as a current view angle difference coefficient by a cubic spline interpolation method and by using a view angle difference coefficient matrix corresponding to the target LED display screen.
5. The method for correcting the viewing angle difference of the LED display screen according to claim 3, wherein for a certain type of LED display screen, the method for generating the corresponding viewing angle difference coefficient matrix further comprises:
calculating to obtain the viewing angle difference coefficient under the residual X-Y direction angle according to the viewing angle difference coefficient under each preset X-Y direction angle by a cubic spline interpolation method;
and taking a matrix formed by the viewing angle difference coefficients under the preset X-Y direction angles and the viewing angle difference coefficients under the residual X-Y direction angles as a viewing angle difference coefficient matrix corresponding to the LED display screen.
6. The method for correcting the viewing angle difference of the LED display screen according to claim 5, wherein the obtaining the viewing angle difference coefficient matrix corresponding to the target LED display screen, and the determining the current viewing angle difference coefficient according to the current X-Y direction angle and the viewing angle difference coefficient matrix corresponding to the target LED display screen includes:
and reading the visual angle difference coefficient corresponding to the current X-Y direction angle from the visual angle difference coefficient matrix corresponding to the target LED display screen, and determining the visual angle difference coefficient as the current visual angle difference coefficient.
7. The method for correcting the viewing angle difference of the LED display screen according to claim 1, wherein the performing the brightness correction on the current to-be-displayed picture of the target LED display screen according to the current viewing angle difference coefficient to obtain the current to-be-displayed picture with the viewing angle difference eliminated includes:
correcting the current brightness value of each lamp point in the current picture to be displayed into a target brightness value to obtain the current picture to be displayed with the view angle difference eliminated;
and the target brightness value is the current brightness value and the current view angle difference coefficient.
8. The utility model provides a correcting unit of LED display screen visual angle difference which characterized in that, the device includes camera direction angle acquisition module, visual angle difference coefficient matrix acquisition module, visual angle difference coefficient confirm module, display screen correction module and sending module, wherein:
the camera direction angle acquisition module is connected with the visual angle difference coefficient determination module and is used for acquiring the current X-Y direction angle between the camera and the target LED display screen in real time, wherein the X direction angle is a horizontal angle, and the Y direction angle is a vertical angle;
the visual angle difference coefficient matrix acquisition module is connected with the visual angle difference coefficient determination module and is used for acquiring a visual angle difference coefficient matrix corresponding to the target LED display screen;
the visual angle difference coefficient determining module is connected with the display picture correcting module and is used for determining a current visual angle difference coefficient according to the current X-Y direction angle and a visual angle difference coefficient matrix corresponding to the target LED display screen;
the display picture correction module is connected with the sending module and used for correcting the brightness of the current picture to be displayed of the target LED display screen according to the current visual angle difference coefficient to obtain the current picture to be displayed with the visual angle difference eliminated;
and the sending module is used for sending the current to-be-displayed picture with the visual angle difference eliminated to a receiving card of the target LED display screen, and controlling the target LED display screen to display the current to-be-displayed picture with the visual angle difference eliminated through the receiving card.
9. The device for correcting the viewing angle difference of the LED display screen according to claim 8, wherein the viewing angle difference coefficient matrix is pre-stored in a sending card or a broadcast server corresponding to the target LED display screen, and the viewing angle difference coefficient matrix obtaining module obtains the viewing angle difference coefficient matrix corresponding to the target LED display screen as follows:
and after the current to-be-displayed picture of the target LED display screen is issued to a sending card or a broadcasting control server corresponding to the target LED display screen, acquiring a visual angle difference coefficient matrix corresponding to the target LED display screen from the sending card or the broadcasting control server corresponding to the target LED display screen.
10. The utility model provides a system for revising LED display screen visual angle difference which characterized in that, the system includes broadcast accuse server, transmission card and LED display screen, wherein:
the broadcast control server is connected with the sending card, and the sending card is connected with a receiving card in the LED display screen;
the play control server is configured to obtain the current to-be-displayed picture with the viewing angle difference eliminated according to the method for correcting the viewing angle difference of the LED display screen according to any one of claims 1 to 7, and send the current to-be-displayed picture with the viewing angle difference eliminated to a receiving card in the LED display screen through the sending card, so as to control the LED display screen to display the current to-be-displayed picture with the viewing angle difference eliminated through the receiving card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210605008.5A CN114927092B (en) | 2022-05-30 | 2022-05-30 | Correction method, device and system for visual angle difference of LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210605008.5A CN114927092B (en) | 2022-05-30 | 2022-05-30 | Correction method, device and system for visual angle difference of LED display screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114927092A true CN114927092A (en) | 2022-08-19 |
| CN114927092B CN114927092B (en) | 2023-11-28 |
Family
ID=82812386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210605008.5A Active CN114927092B (en) | 2022-05-30 | 2022-05-30 | Correction method, device and system for visual angle difference of LED display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114927092B (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050157173A1 (en) * | 2003-12-12 | 2005-07-21 | Masaaki Kurebayashi | Monitor |
| JP2010026045A (en) * | 2008-07-16 | 2010-02-04 | Sharp Corp | Display device, display method, program, and recording medium |
| CN103150986A (en) * | 2013-03-20 | 2013-06-12 | 长春希达电子技术有限公司 | Method for collecting and calibrating multiple cameras of LED (Light-Emitting Diode) display screen |
| JP2013186284A (en) * | 2012-03-08 | 2013-09-19 | Mitsubishi Electric Corp | Luminance adjustment device |
| JP2014212422A (en) * | 2013-04-18 | 2014-11-13 | Ｎｅｃディスプレイソリューションズ株式会社 | Brightness control system, brightness control assisting device, brightness control method, brightness control assisting method and program |
| CN105590604A (en) * | 2016-03-09 | 2016-05-18 | 深圳市华星光电技术有限公司 | Mura phenomenon compensation method |
| CN106157926A (en) * | 2015-03-23 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of method and device regulating brightness of display screen |
| US20180088889A1 (en) * | 2016-09-29 | 2018-03-29 | Jiang Chang | Three-dimensional image formation and color correction system and method |
| CN108335678A (en) * | 2018-01-10 | 2018-07-27 | 惠科股份有限公司 | Driving method and device of display panel |
| CN109036271A (en) * | 2018-08-17 | 2018-12-18 | 武汉华星光电半导体显示技术有限公司 | The modified method, apparatus of Curved screen bent area colour cast, storage medium and terminal |
| CN109257484A (en) * | 2017-07-14 | 2019-01-22 | 西安中兴新软件有限责任公司 | A kind of brightness of display screen processing method and terminal device |
| CN110232885A (en) * | 2019-07-26 | 2019-09-13 | 武汉精立电子技术有限公司 | A kind of brightness of display screen measurement method, system and terminal |
| CN111179815A (en) * | 2020-01-07 | 2020-05-19 | 长春希达电子技术有限公司 | Method for collecting and correcting normal brightness and chromaticity of LED display module |
| JP2020160383A (en) * | 2019-03-28 | 2020-10-01 | Ｎｅｃディスプレイソリューションズ株式会社 | Video correction device, video processing system, display device, and luminance unevenness correction method |
| CN112201203A (en) * | 2020-12-07 | 2021-01-08 | 卡莱特（深圳）云科技有限公司 | Method and device for determining brightness gradient error of LED display screen |
| CN112885289A (en) * | 2021-04-28 | 2021-06-01 | 武汉精测电子集团股份有限公司 | Display screen calibration method and device |
| CN113611243A (en) * | 2021-07-30 | 2021-11-05 | 卡莱特云科技股份有限公司 | Display difference correction method and device of immersive LED display screen |
| KR102349112B1 (en) * | 2021-07-15 | 2022-01-12 | 주식회사 고산자 | Image processing system for analysis and updating of image data |
| CN114241983A (en) * | 2021-12-31 | 2022-03-25 | 季华实验室 | Folding screen display uniformity compensation method and device, electronic equipment and storage medium |
-
2022
- 2022-05-30 CN CN202210605008.5A patent/CN114927092B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050157173A1 (en) * | 2003-12-12 | 2005-07-21 | Masaaki Kurebayashi | Monitor |
| JP2010026045A (en) * | 2008-07-16 | 2010-02-04 | Sharp Corp | Display device, display method, program, and recording medium |
| JP2013186284A (en) * | 2012-03-08 | 2013-09-19 | Mitsubishi Electric Corp | Luminance adjustment device |
| CN103150986A (en) * | 2013-03-20 | 2013-06-12 | 长春希达电子技术有限公司 | Method for collecting and calibrating multiple cameras of LED (Light-Emitting Diode) display screen |
| JP2014212422A (en) * | 2013-04-18 | 2014-11-13 | Ｎｅｃディスプレイソリューションズ株式会社 | Brightness control system, brightness control assisting device, brightness control method, brightness control assisting method and program |
| CN106157926A (en) * | 2015-03-23 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of method and device regulating brightness of display screen |
| CN105590604A (en) * | 2016-03-09 | 2016-05-18 | 深圳市华星光电技术有限公司 | Mura phenomenon compensation method |
| US20180088889A1 (en) * | 2016-09-29 | 2018-03-29 | Jiang Chang | Three-dimensional image formation and color correction system and method |
| CN109257484A (en) * | 2017-07-14 | 2019-01-22 | 西安中兴新软件有限责任公司 | A kind of brightness of display screen processing method and terminal device |
| CN108335678A (en) * | 2018-01-10 | 2018-07-27 | 惠科股份有限公司 | Driving method and device of display panel |
| US20210074199A1 (en) * | 2018-01-10 | 2021-03-11 | HKC Corporation Limited | Driving method for display panel, and device |
| CN109036271A (en) * | 2018-08-17 | 2018-12-18 | 武汉华星光电半导体显示技术有限公司 | The modified method, apparatus of Curved screen bent area colour cast, storage medium and terminal |
| JP2020160383A (en) * | 2019-03-28 | 2020-10-01 | Ｎｅｃディスプレイソリューションズ株式会社 | Video correction device, video processing system, display device, and luminance unevenness correction method |
| CN110232885A (en) * | 2019-07-26 | 2019-09-13 | 武汉精立电子技术有限公司 | A kind of brightness of display screen measurement method, system and terminal |
| CN111179815A (en) * | 2020-01-07 | 2020-05-19 | 长春希达电子技术有限公司 | Method for collecting and correcting normal brightness and chromaticity of LED display module |
| CN112201203A (en) * | 2020-12-07 | 2021-01-08 | 卡莱特（深圳）云科技有限公司 | Method and device for determining brightness gradient error of LED display screen |
| CN112885289A (en) * | 2021-04-28 | 2021-06-01 | 武汉精测电子集团股份有限公司 | Display screen calibration method and device |
| KR102349112B1 (en) * | 2021-07-15 | 2022-01-12 | 주식회사 고산자 | Image processing system for analysis and updating of image data |
| CN113611243A (en) * | 2021-07-30 | 2021-11-05 | 卡莱特云科技股份有限公司 | Display difference correction method and device of immersive LED display screen |
| CN114241983A (en) * | 2021-12-31 | 2022-03-25 | 季华实验室 | Folding screen display uniformity compensation method and device, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114927092B (en) | 2023-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8777418B2 (en) | Calibration of a super-resolution display | |
| TWI545554B (en) | Automatic installation method for video wall and its system | |
| WO2008148291A1 (en) | Device and method for calibrating multi-screen wall | |
| WO2015161561A1 (en) | Method and device for terminal to achieve image synthesis based on multiple cameras | |
| CN108234975A (en) | Combination color homogeneity and consistency control method based on video camera | |
| CN105260152B (en) | Image processing method and device for LED display | |
| CN107948733B (en) | Video image processing method and device and electronic equipment | |
| JP5633320B2 (en) | Drawing image sharing device | |
| TWI539820B (en) | Projection system and brightness adjusting method thereof | |
| WO2012163259A1 (en) | Method and apparatus for adjusting video conference system | |
| CN115064117B (en) | Virtual pixel display screen brightness correction method, system and device and display system | |
| TW201423721A (en) | Display wall adjusting device and method for adjusting the display wall | |
| EP2684349A1 (en) | Video processing apparatus, video processing system, and video processing method | |
| CN112770095B (en) | Panoramic projection method and device and electronic equipment | |
| WO2020259444A1 (en) | Image processing method and related device | |
| CN114927092A (en) | Method, device and system for correcting visual angle difference of LED display screen | |
| CN202841396U (en) | Digital film optimization device and digital film projection system | |
| CN109932160B (en) | AOI and gray scale meter detection system and method | |
| KR101633436B1 (en) | Color correcting method for image of multiview cameras and color correction system for image of multiview cameras | |
| CN113538316B (en) | Image processing method, device, terminal equipment and readable storage medium | |
| CN112565728B (en) | White balance adjusting method, system and device | |
| CN115064109A (en) | Pixel compensation method and device and display equipment | |
| TWI760733B (en) | Image calibration method and image calibration device | |
| CN112988096A (en) | Display unit positioning method, device, equipment, storage medium and display device | |
| CN113099206A (en) | Image processing method, device, equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |