CN113763873A - Correction method, system and device of LED display screen, electronic equipment and storage medium - Google Patents

Correction method, system and device of LED display screen, electronic equipment and storage medium Download PDF

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Publication number
CN113763873A
CN113763873A CN202111069062.4A CN202111069062A CN113763873A CN 113763873 A CN113763873 A CN 113763873A CN 202111069062 A CN202111069062 A CN 202111069062A CN 113763873 A CN113763873 A CN 113763873A
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China
Prior art keywords
gray scale
correction coefficient
display screen
correction
parameter set
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崔红亮
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Chipone Technology Beijing Co Ltd
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Chipone Technology Beijing Co Ltd
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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]
    • 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
    • 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
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The application provides a method, a system and a device for correcting an LED display screen, electronic equipment and a computer readable storage medium, wherein the method comprises the following steps: acquiring a display parameter set of any gray scale when the LED display screen displays a test image; determining a correction coefficient of each pixel under the gray scale based on the display parameter set, and obtaining a correction coefficient set corresponding to the gray scale; controlling the LED display screen to redisplay the test image according to the correction coefficient set, and acquiring a display parameter set of the gray scale when the test image is redisplayed; and determining whether to perform a correction task for the next gray scale according to the acquired display parameter set. According to the technical scheme, under the condition that the ideal correction effect of each gray scale is guaranteed, the correction task is executed one by one, and therefore the correction of the display effect of the LED display screen under all the gray scales is completed.

Description

Correction method, system and device of LED display screen, electronic equipment and storage medium
Technical Field
The present disclosure relates to the field of display correction technologies, and in particular, to a method, a system, and an apparatus for correcting an LED display screen, an electronic device, and a computer-readable storage medium.
Background
An LED (Light-Emitting Diode) display screen is composed of a control system, a power supply and an LED lamp panel module, wherein the LED lamp panel module is composed of a control chip, a PCB (Printed Circuit Board) Board, LED lamp beads and corresponding resistance container parts. Along with the application field of the LED display screen is wider and wider, the requirements on the display precision and the display effect of the LED display screen are higher and higher, and the distance between the lamp beads is smaller and smaller. However, due to the influence of factors such as the manufacturing process and the precision difference of the LED light emitting chips, the self light emitting characteristics, the parasitic impedance of the PCB, and the precision of the control chip, the LED screen may have the problem of uneven display, especially uneven brightness and color caused by the influence of the parasitic impedance and the precision of the lamp beads on the small-distance LED display screen and the small current.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method, a system, and an apparatus for correcting an LED display screen, an electronic device, and a computer-readable storage medium, which are used for correcting a display effect of the LED display screen.
In one aspect, the present application provides a method for correcting an LED display screen, including:
acquiring a display parameter set of any gray scale when the LED display screen displays a test image;
determining a correction coefficient of each pixel under the gray scale based on the display parameter set, and obtaining a correction coefficient set corresponding to the gray scale;
controlling the LED display screen to redisplay the test image according to the correction coefficient set, and acquiring a display parameter set of the gray scale when the test image is redisplayed;
and determining whether to perform a correction task for the next gray scale according to the acquired display parameter set.
In an embodiment, the set of display parameters comprises a chromaticity of each pixel;
the determining a correction coefficient of each pixel at the gray scale based on the display parameter set to obtain a correction coefficient set corresponding to the gray scale comprises:
for each pixel, determining a correction coefficient corresponding to the pixel in the gray scale according to the chromaticity of the pixel and the target chromaticity;
and obtaining the correction coefficient set according to the correction coefficients corresponding to all the pixels in the gray scale.
In an embodiment, the set of display parameters comprises a chromaticity of each pixel;
the determining whether to perform a task of correcting the next gray scale according to the retrieved display parameter set includes:
and if the chroma of each pixel in the re-acquired display parameter set is the same as the target chroma, determining to perform a correction task on the next gray scale.
In one embodiment, before the determining to perform the task of correcting the next gray scale, the method further comprises:
and storing a correction coefficient set corresponding to the gray scale.
In an embodiment, the set of display parameters comprises a chromaticity of each pixel;
the determining whether to perform a task of correcting the next gray scale according to the retrieved display parameter set includes:
and if the chroma of any pixel in the re-acquired display parameter set is different from the target chroma, returning to the step of determining the correction coefficient of each pixel in the gray scale based on the display parameter set.
On the other hand, this application still provides a correction system of LED display screen, includes:
the camera is used for collecting a display parameter set of any gray scale when the LED display screen displays a test image and sending the display parameter set;
the computing equipment is connected with the camera and used for acquiring a display parameter set of any gray scale when the LED display screen displays the test image; determining a correction coefficient of each pixel under the gray scale based on the display parameter set, and obtaining a correction coefficient set corresponding to the gray scale; after the correction coefficient set is sent, obtaining a display parameter set of the gray scale when the LED display screen redisplays the test image according to the correction coefficient set; determining whether to perform a correction task for the next gray scale according to the acquired display parameter set;
and the sending and receiving card is connected with the computing equipment and used for acquiring the correction coefficient set and controlling the LED display screen to display the test image according to the correction coefficient set.
In one embodiment of the present invention, the substrate is,
the sending and receiving card is used for sending the correction coefficient set corresponding to the gray scale when the LED display screen is controlled to display the test image according to the correction coefficient set;
the system further comprises:
the driving chip is connected with the sending and receiving card and is used for acquiring a correction coefficient set sent by the sending and receiving card; storing correction coefficient sets corresponding to all gray scales; and driving the LED display screen to display according to the correction coefficient sets corresponding to all the gray scales.
On the other hand, this application still provides a correcting unit of LED display screen, includes:
the acquisition module is used for acquiring a display parameter set of any gray scale when the LED display screen displays the test image;
the determining module is used for determining a correction coefficient of each pixel under the gray scale based on the display parameter set to obtain a correction coefficient set corresponding to the gray scale;
the control module is used for controlling the LED display screen to redisplay the test image according to the correction coefficient set and acquiring a display parameter set of the gray scale when the test image is redisplayed;
and the checking module is used for determining whether to carry out the correction task of the next gray scale according to the acquired display parameter set.
Further, the present application also provides an electronic device, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to execute the correction method of the LED display screen.
In addition, the application also provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program can be executed by a processor to complete the correction method of the LED display screen.
According to the technical scheme, after a display parameter set of any gray scale when an LED display screen displays a test image is obtained, a correction coefficient set corresponding to the gray scale is determined based on the display parameter set, the LED display screen is controlled to re-display the test image according to the correction coefficient set, and the display parameter set corresponding to the gray scale when the test image is re-displayed is obtained, so that the correction effect can be verified according to the re-obtained display parameter set, and a correction task for the next gray scale is performed under the condition of ideal effect; therefore, under the condition of ensuring that the correction effect of each gray scale is ideal, the correction task is executed one by one, so that the correction of the display effect of the LED display screen under all the gray scales is completed, and the color and the brightness of the LED display screen can be uniformly distributed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly described below.
Fig. 1 is a schematic network architecture diagram of a calibration system for an LED display screen according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a network architecture of a calibration system for an LED display screen according to another embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 4 is a schematic flowchart of a method for correcting an LED display screen according to an embodiment of the present disclosure;
FIG. 5 is a schematic flowchart illustrating a method for calibrating an LED display screen according to another embodiment of the present disclosure;
fig. 6 is a block diagram of a correction device for an LED display screen according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic network architecture diagram of a correction system of an LED display screen according to an embodiment of the present disclosure. As shown in fig. 1, the system may include: camera 30, computing device 40, and transceiver card 50, the system being connected to LED display screen 70 to calibrate LED display screen 70.
And the camera 30 is configured to acquire a display parameter set of any gray scale when the LED display screen 70 displays the test image, and send the display parameter set. And when the test image is used for correcting the LED display screen, the image is displayed by the LED display screen. The display parameter set may include display parameters for each pixel of the LED display screen, and the display parameters may include chromaticity and brightness. The camera 30 may capture the set of display parameters for all gray levels and send them to the computing device 40.
The computing device 40 may be an electronic device such as a computer, a tablet computer, a mobile phone, etc. and is connected to the camera 30, and the connection may include a wired or wireless communication connection. The computing device 40 is configured to execute the calibration method of the LED display screen of the present application, and when executing the calibration method, the calibration coefficient set corresponding to each gray scale may be sent to the transceiver card 50, as described in detail below.
And the transmitting and receiving card 50 is connected with the computing device 40, and the connection mode can include wired or wireless communication connection. The transmitting and receiving card 50 is used for acquiring the correction coefficient set transmitted by the computing device 40 and controlling the LED display screen to display the test image with the correction coefficient set. When controlling the LED display screen to display the test image with the correction coefficient, the transceiver card 50 may decode the test image transmitted by the computing device 40, and transmit the decoded test image and the correction data set to the LED display screen, so that the LED display screen may correct the decoded test image according to the correction data set and display the corrected test image.
In an embodiment, referring to fig. 2, a schematic network architecture of a correction system for an LED display screen provided in another embodiment of the present application is shown in fig. 2, where the system includes a driving chip 60 in addition to a camera 30, a computing device 40, and a transmitting/receiving card 50.
And the transmitting and receiving card 50 is used for transmitting the correction coefficient set corresponding to the gray scale when controlling the LED display screen 70 to display the test image by the correction coefficient set.
The driving chip 60 is connected to the transceiver card 50, and the connection mode may include wired or wireless communication connection. The driving chip 60 is configured to obtain a correction coefficient set sent by the sending and receiving card, and drive the LED display screen 70 to correct the display parameter of each pixel according to the correction coefficient set when displaying the test image, so that the LED lamp bead of the LED display screen 70 displays the test image according to the correction coefficient set.
The driving chip 60 may be configured to store the correction coefficient set corresponding to each gray scale, so as to store the correction coefficient sets corresponding to all gray scales, and drive the LED display screen 70 to display according to the correction coefficient sets corresponding to all gray scales. The memory storing the correction coefficient set may be located inside the driving chip 60 or may be located outside the driving chip 60. After storing the correction coefficient sets corresponding to all gray scales, the driving chip 60 can perform display correction on the LED display screen 70 independently.
The correction system can correct the LED display screen before the LED display screen leaves a factory, obtains the correction coefficient sets corresponding to all gray scales, and stores the correction coefficient sets into the driving chip. After the LED display screen leaves a factory, in the application process, the drive chip realizes correction according to the local correction coefficient set, so that the correct display effect is ensured.
As shown in fig. 3, the present embodiment provides an electronic apparatus 1 including: at least one processor 11 and a memory 12, one processor 11 being exemplified in fig. 2. The processor 11 and the memory 12 are connected by a bus 10, and the memory 12 stores instructions executable by the processor 11, and the instructions are executed by the processor 11, so that the electronic device 1 can execute all or part of the flow of the method in the embodiments described below. In an embodiment, the electronic device 1 may be the above-mentioned computing device, and is configured to perform the LED display screen calibration method.
The Memory 12 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk.
The present application also provides a computer-readable storage medium, which stores a computer program executable by the processor 11 to perform the LED display screen calibration method provided by the present application.
Referring to fig. 4, a flowchart of a method for correcting an LED display screen according to an embodiment of the present application is shown in fig. 4, where the method may include the following steps 410 to 440.
Step 410: and acquiring a display parameter set of any gray scale when the LED display screen displays the test image.
The computing device may calibrate the LED display screen starting from any gray level. For example, if the gray level is 32 bits, any gray level may be 0, 31, or other values between 0 and 31. If the gray scale is 256 bits, any gray scale may be 0, 255, or other values between 0 and 255.
The computing device may acquire a set of display parameters from a camera that captures the display parameters.
Step 420: and determining the correction coefficient of each pixel under the gray scale based on the display parameter set, and obtaining the correction coefficient set corresponding to the gray scale.
After obtaining the set of display parameters, the computing device may determine a correction factor for each pixel at the gray level based on a difference between the display parameter of the pixel in the set of display parameters and the target display parameter. The target display parameters are display parameters when the LED display screen normally displays. The computing device may process the display parameters and the target display parameters according to a correction algorithm related to a color temperature, a relationship between gray scale increment and brightness increment, a difference in each gray scale stage, and the like, so as to obtain a correction coefficient corresponding to each pixel.
After determining the correction coefficient of each pixel of the LED display screen, a set of correction coefficients corresponding to the gray scale can be obtained. The correction coefficient set includes a correction coefficient for each pixel.
Step 430: and controlling the LED display screen to redisplay the test image according to the correction coefficient set, and acquiring a display parameter set of the gray scale when the test image is redisplayed.
The computing device can send the correction coefficient set and the test image to the sending and receiving card, and the sending and receiving card controls the LED display screen to redisplay the test image according to the correction coefficient set. The sending and receiving card can send the correction coefficient set to the driving chip, so that the driving chip corrects the display parameters when the LED display screen displays the test image according to the correction coefficient set, and the test image is displayed.
At this time, the camera of the correction system may transmit the acquired display parameter of each pixel in the gray scale to the computing device, so that the computing device may reacquire the display parameter set of the gray scale.
Step 440: and determining whether to perform a correction task for the next gray scale according to the acquired display parameter set.
The computing device may verify the correction effect of the correction coefficient set according to the retrieved display parameter set, thereby determining whether to perform a correction task for a next gray scale. The computing equipment can compare the display parameters in the newly acquired display parameter set with the target display parameters, and if the display parameters are completely consistent with the target display parameters or the difference is very small, the correction effect can be determined to meet the requirement, and then the correction task for the next gray scale is performed.
The computing device may repeat the above process until all of the gray scale correction tasks have been performed.
By the aid of the measures, the correction tasks can be executed one by one under the condition that the ideal correction effect of each gray scale is guaranteed, so that the correction of the display effect of the LED display screen under all the gray scales is completed, and the color and the brightness of the LED display screen can be uniformly distributed.
In one embodiment, the set of display parameters may include a chromaticity of each pixel of the LED display screen, where the chromaticity may be represented by luminance values corresponding to three primary colors (red, green, and blue), in other words, the display parameter of each pixel includes luminance values of the three primary colors.
When determining the correction coefficient of each pixel at a gray scale based on the display parameter set, the computing device may determine, for each pixel, the correction coefficient corresponding to the pixel at the gray scale according to the chromaticity and the target chromaticity. The target chromaticity is the chromaticity of the gray scale when the LED display screen normally displays, and can be pre-configured in the computing equipment, and the target chromaticity can be represented by target brightness values corresponding to three primary colors.
For any pixel, the computing device may determine a correction coefficient corresponding to each primary color of the pixel according to a difference between a luminance value of the primary color and a target luminance value. After determining the correction coefficients for the three primary colors, all correction coefficients for the pixel may be obtained. After obtaining the correction coefficients for all pixels at the gray level, the computing device may obtain a set of correction coefficients.
In one embodiment, the set of display parameters includes a chromaticity for each pixel of the LED display screen. When determining whether to perform a correction task for a next gray scale according to the re-acquired display parameter set, the computing device may determine whether the chromaticity of each pixel in the re-acquired display parameter set is the same as a preset target chromaticity, and if the chromaticity of each pixel is the same as the target chromaticity, may determine that a correction coefficient set corresponding to the gray scale may achieve a good correction effect.
In one embodiment, after determining that the correction task of any gray scale is completed, the computing device may store the correction coefficient set corresponding to the gray scale, so that the LED display screen may be corrected at the gray scale directly according to the correction coefficient set. The computing device can write the correction coefficient set of each gray scale into the driving chip through the sending and receiving card, so that the driving chip can store the correction coefficient sets corresponding to all the gray scales. The driving chip can independently complete display correction on the LED display screen according to the stored correction coefficient sets corresponding to all the gray scales.
In one embodiment, the set of display parameters includes a chromaticity for each pixel of the LED display screen. When determining whether to perform a correction task for a next gray scale according to the re-acquired display parameter set, the computing device may determine whether the chromaticity of each pixel in the re-acquired display parameter set is the same as a preset target chromaticity, and if the chromaticity of any pixel is different from the target chromaticity, the computing device may return to step 420, and re-determine the correction coefficient of each pixel in the gray scale based on the re-acquired display parameter set, thereby obtaining a new correction coefficient set corresponding to the gray scale.
By the method, under the condition that the correction effect of the correction coefficient set corresponding to the gray scale is determined to be not ideal, the correction task of the gray scale can be executed again, and therefore the ideal correction effect is achieved.
Referring to fig. 5, which is a schematic flowchart of a correction method for an LED display screen according to another embodiment of the present disclosure, as shown in fig. 5, a computing device may start a correction task from any gray scale to obtain a display parameter set of the LED display screen when displaying a test image. The computing device may determine a correction coefficient corresponding to each pixel in the display parameter set based on a difference between the chromaticity of the pixel and a preset target chromaticity, so as to obtain a correction coefficient set corresponding to the gray scale.
Illustratively, the computing device obtains a luminance value R of a pixel in a chromaticity representation of three primary colors at a gray level1、G1、B1The preset target chromaticity is R2、G2、B2. The computing device may determine, according to the difference between the chromaticity and the target chromaticity, that the correction coefficient of the pixel at the gray level is: cr, Crg, Crb, Cg, Cgr, Cgb, Cb, Cbr, Cbg.
The computing device may control the LED display screen to redisplay the test image with the set of correction coefficients. Illustratively, the brightness values R of the LED display screen for the three primary colors1、G1、B1Correcting to obtain the corrected brightness value R3、G3、B3. The correction process can be expressed by the following equations (1) to (3):
R3＝R1*Cr+G1*Crg+B1*Crb (1)
G3＝G1*Cg+R1*Cgr+B1*Cgb (2)
B3＝B1*Cb+R1*Cbr+G1*Cbg (3)
wherein R is1、G1、B1Correcting the brightness values of the first three primary colors; r3、G3、B3The brightness values of the three corrected primary colors are obtained; cr, Crg, Crb, Cg, Cgr, Cgb, Cb, Cbr, Cbg are correction coefficients.
The computing device may retrieve the set of display parameters for the gray scale when displayed according to the set of correction coefficients.
The computing device may determine whether the chromaticity of each pixel in the corrected display parameter set is consistent with the target chromaticity. On the one hand, if the gray levels are inconsistent, which indicates that the correction effect is not ideal, the gray level correction task may be re-executed based on the re-acquired display parameter set. On the other hand, if the two gray levels are consistent, the correction task of the gray level is completed, the correction coefficient set of the gray level can be stored, and the correction task can be performed on the next gray level. The computing equipment can execute the correction tasks one by one until the correction tasks of all the gray scales are completely executed, so that the full gray scale correction of the LED display screen is realized.
Fig. 6 is a calibration apparatus for an LED display screen according to an embodiment of the present invention, as shown in fig. 6, the apparatus may include:
the obtaining module 610 is configured to obtain a display parameter set of any gray scale when the LED display screen displays the test image;
a determining module 620, configured to determine, based on the display parameter set, a correction coefficient of each pixel at the gray scale, and obtain a correction coefficient set corresponding to the gray scale;
a control module 630, configured to control the LED display screen to redisplay the test image according to the correction coefficient set, and obtain a display parameter set of the gray scale when the test image is redisplayed;
and the checking module 640 is used for determining whether to perform a correction task on the next gray scale according to the retrieved display parameter set.
The implementation processes of the functions and actions of the modules in the device are specifically detailed in the implementation processes of the corresponding steps in the correction method of the LED display screen, and are not described again here.
In the embodiments provided in the present application, the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims (10)

1. A correction method of an LED display screen is characterized by comprising the following steps:
acquiring a display parameter set of any gray scale when the LED display screen displays a test image;
determining a correction coefficient of each pixel under the gray scale based on the display parameter set, and obtaining a correction coefficient set corresponding to the gray scale;
controlling the LED display screen to redisplay the test image according to the correction coefficient set, and acquiring a display parameter set of the gray scale when the test image is redisplayed;
and determining whether to perform a correction task for the next gray scale according to the acquired display parameter set.
2. The method of claim 1, wherein the set of display parameters comprises a chroma for each pixel;
the determining a correction coefficient of each pixel at the gray scale based on the display parameter set to obtain a correction coefficient set corresponding to the gray scale comprises:
for each pixel, determining a correction coefficient corresponding to the pixel in the gray scale according to the chromaticity of the pixel and the target chromaticity;
and obtaining the correction coefficient set according to the correction coefficients corresponding to all the pixels in the gray scale.
3. The method of claim 1, wherein the set of display parameters comprises a chroma for each pixel;
the determining whether to perform a task of correcting the next gray scale according to the retrieved display parameter set includes:
and if the chroma of each pixel in the re-acquired display parameter set is the same as the target chroma, determining to perform a correction task on the next gray scale.
4. The method of claim 3, wherein prior to said determining to perform a correction task for a next gray level, the method further comprises:
and storing a correction coefficient set corresponding to the gray scale.
5. The method of claim 1, wherein the set of display parameters comprises a chroma for each pixel;
the determining whether to perform a task of correcting the next gray scale according to the retrieved display parameter set includes:
and if the chroma of any pixel in the re-acquired display parameter set is different from the target chroma, returning to the step of determining the correction coefficient of each pixel in the gray scale based on the display parameter set.
6. A correction system of an LED display screen is characterized by comprising:
the camera is used for collecting a display parameter set of any gray scale when the LED display screen displays a test image and sending the display parameter set;
the computing equipment is connected with the camera and used for acquiring a display parameter set of any gray scale when the LED display screen displays the test image; determining a correction coefficient of each pixel under the gray scale based on the display parameter set, and obtaining a correction coefficient set corresponding to the gray scale; after the correction coefficient set is sent, obtaining a display parameter set of the gray scale when the LED display screen redisplays the test image according to the correction coefficient set; determining whether to perform a correction task for the next gray scale according to the acquired display parameter set;
and the sending and receiving card is connected with the computing equipment and used for acquiring the correction coefficient set and controlling the LED display screen to display the test image according to the correction coefficient set.
7. The system of claim 6,
the sending and receiving card is used for sending the correction coefficient set corresponding to the gray scale when the LED display screen is controlled to display the test image according to the correction coefficient set;
the system further comprises:
the driving chip is connected with the sending and receiving card and is used for acquiring a correction coefficient set sent by the sending and receiving card; storing correction coefficient sets corresponding to all gray scales; and driving the LED display screen to display according to the correction coefficient sets corresponding to all the gray scales.
8. A correcting device of an LED display screen is characterized by comprising:
the acquisition module is used for acquiring a display parameter set of any gray scale when the LED display screen displays the test image;
the determining module is used for determining a correction coefficient of each pixel under the gray scale based on the display parameter set to obtain a correction coefficient set corresponding to the gray scale;
the control module is used for controlling the LED display screen to redisplay the test image according to the correction coefficient set and acquiring a display parameter set of the gray scale when the test image is redisplayed;
and the checking module is used for determining whether to carry out the correction task of the next gray scale according to the acquired display parameter set.
9. An electronic device, characterized in that the electronic device comprises:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the method of LED display screen correction of any one of claims 1-5.
10. A computer-readable storage medium, characterized in that the storage medium stores a computer program executable by a processor to perform the method of LED display screen correction of any one of claims 1-5.
CN202111069062.4A 2021-09-13 2021-09-13 Correction method, system and device of LED display screen, electronic equipment and storage medium Pending CN113763873A (en)

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