CN117854422A - Method, device, terminal equipment, control equipment and medium for acquiring correction coefficient - Google Patents

Method, device, terminal equipment, control equipment and medium for acquiring correction coefficient Download PDF

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Publication number
CN117854422A
CN117854422A CN202211207833.6A CN202211207833A CN117854422A CN 117854422 A CN117854422 A CN 117854422A CN 202211207833 A CN202211207833 A CN 202211207833A CN 117854422 A CN117854422 A CN 117854422A
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China
Prior art keywords
display
corrected
display screen
primary colors
target
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CN202211207833.6A
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Chinese (zh)
Inventor
田博
杨城
白绳武
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Xian Novastar Electronic Technology Co Ltd
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Xian Novastar Electronic Technology Co Ltd
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Priority to CN202211207833.6A priority Critical patent/CN117854422A/en
Publication of CN117854422A publication Critical patent/CN117854422A/en
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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
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing

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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 Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The application is applicable to the technical field of display and provides a method, a device, terminal equipment, control equipment and a medium for acquiring correction coefficients, wherein the method for acquiring the correction coefficients comprises the following steps: acquiring a first display image when a display screen to be corrected is configured to display a composite color, wherein the composite color is generated by at least two primary colors; and respectively determining at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors according to the first display image. In the scheme, the composite color is generated by at least two primary colors, and the composite color image contains the composite color optical data, so that at least two corresponding target coefficients when at least two primary colors are corrected can be obtained according to the first display image, and the display effect of the composite color can be improved while the monochromatic correction effect is ensured.

Description

Method, device, terminal equipment, control equipment and medium for acquiring correction coefficient
Technical Field
The application belongs to the technical field of display, and particularly relates to a method, a device, terminal equipment, control equipment and a medium for acquiring correction coefficients.
Background
Along with the miniaturization of LED (Light Emitting Diode) display screens, the coupling phenomenon between the LED lamps is more and more serious, so that the LED display screens produced by manufacturers have the phenomenon of uneven display, and therefore, the LED display screens need to be corrected. In order to improve the correction effect of the display screen, many advanced and complex correction processes are presented in the prior art, and the correction process is used, so that the correction cost is high, and the correction time cost is also high. For example, in the conventional correction method, in the case where the LED display screen displays red, green and blue, optical data corresponding to each single color is collected and corrected.
The correction coefficient obtained by the correction method is used for correcting the LED display screen, so that the correction effect of the composite color is poor, the data acquisition amount is large, and the correction time cost is high.
Disclosure of Invention
The embodiment of the application provides a method, a device, terminal equipment, control equipment and a medium for acquiring correction coefficients, which can balance the correction effects of single color and composite color.
A first aspect of an embodiment of the present application provides a method for obtaining a correction coefficient, where the method for obtaining a correction coefficient includes:
Acquiring a first display image when a display screen to be corrected is configured to display a composite color, wherein the composite color is generated by at least two primary colors;
acquiring a first display image when a display screen to be corrected is configured to display a composite color, wherein the composite color is generated by at least two primary colors;
according to the first display image, at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors are respectively determined, the at least two target correction coefficients are determined by a processor through analyzing optical data of the first display image, the at least two target correction coefficients are in one-to-one correspondence with the at least two primary colors, and the at least two target correction coefficients are used for correcting lamp points corresponding to the primary colors.
A second aspect of embodiments of the present application provides a correction device for a display screen, including:
the image acquisition module is used for acquiring a first display image when the display screen to be corrected is configured to display a composite color, wherein the composite color is generated by at least two primary colors;
the system comprises a coefficient determining module, a processor and a display screen, wherein the coefficient determining module is used for respectively determining at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors according to the first display image, the at least two target correction coefficients are determined by the processor through analyzing optical data of the first display image, the at least two target correction coefficients are in one-to-one correspondence with the at least two primary colors, and the at least two target correction coefficients are used for correcting the lamp points of the corresponding primary colors.
A third aspect of the embodiments of the present application provides a terminal device, including: the system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the method for acquiring the correction coefficient according to the first aspect when executing the computer program.
A fourth aspect of the embodiments of the present application provides a computer-readable storage medium storing a computer program, which when executed by a processor implements the method for obtaining a correction coefficient according to the first aspect.
A fifth aspect of embodiments of the present application provides a computer program product, which when run on a terminal device, causes the terminal device to perform the method of obtaining correction coefficients as described in the first aspect above.
A sixth aspect of the embodiments of the present application provides a control apparatus, including: a memory for storing the correction coefficient obtained according to the method of the first aspect; and the processor is used for correcting the display screen according to the correction coefficient.
Compared with the prior art, the embodiment of the application has the beneficial effects that: according to the embodiment of the application, a first display image when the display screen to be corrected is configured to display a composite color is firstly obtained, wherein the composite color is generated by at least two primary colors, and at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors are respectively determined according to the first display image. In the scheme, the composite color is generated by at least two primary colors, and the composite color image contains the composite color optical data, so that at least two corresponding target coefficients when at least two primary colors are corrected can be obtained according to the first display image, and the display effect of the composite color can be improved while the monochromatic correction effect is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an application scenario diagram provided in an embodiment of the present application;
fig. 2 is a flowchart of a method for obtaining a correction coefficient according to an embodiment of the present application;
fig. 3 is a flowchart of a method for obtaining a correction coefficient according to a second embodiment of the present application;
fig. 4 is a schematic structural diagram of a device for obtaining a correction coefficient according to a third embodiment of the present application;
fig. 5 is a schematic structural diagram of a terminal device according to a fourth embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the display screen in this application may be an LCD display screen, an LED display screen, an OLED display screen, or the like, which can be used for display. Taking an LED display screen as an example, the LED display screen can be a common LED display screen, a microLED display screen or a miniLED display screen, or a new type of LED display screen in the future. Further, in some embodiments, the packaging manner of the LED display screen may also be one of the following packaging manners: for example SMD, COB, COG or a new packaging means in the future.
It should be understood that the control device in the present application may include: at least one of the transmitting card and the receiving card, for example, the receiving card may apply the correction coefficient after receiving the correction coefficient, thereby correcting the display screen.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As used in this specification and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".
In addition, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
The method for acquiring the correction coefficient provided by the embodiment of the application can be applied to the terminal equipment coupled with the display screen.
Referring to fig. 1, an application scenario diagram provided in an embodiment of the present application is shown. As shown in fig. 1, the terminal device 101 may be connected to the control module 103 of the display screen 102 to be corrected and the acquisition device 104 for acquiring the display image of the display screen 102 to be corrected, in this embodiment, after acquiring the first display image acquired by the acquisition device 104 and used for configuring the display screen 102 to be corrected to display a composite color, the terminal device 101 may determine, according to the first display image, at least two target correction coefficients corresponding to each pixel position when the display screen 102 to be corrected is configured to display at least two primary colors, and further acquire at least two target correction coefficients corresponding to each pixel position on the display screen 102 to be corrected, where the at least two target correction coefficients and the at least two primary colors are in one-to-one correspondence, and are used for correcting the light points corresponding to the primary colors.
Wherein the correction of the lamp spot of the corresponding primary color using at least two target correction factors may take at least the following method:
first, at least two target correction coefficients corresponding to each pixel bit are sent to the control module 103, so that the control module 103 can correct when the display screen 102 to be corrected is configured to display at least two primary colors respectively according to the at least two target correction coefficients corresponding to each pixel bit.
Second, after obtaining at least two target correction coefficients corresponding to each pixel, the terminal device 101 stores the correction coefficients on a receiving card of the display screen to be corrected, and when correction is required, the receiving card can directly call the stored correction coefficients to perform correction.
In practical applications, the terminal device 101 may be embedded in the acquisition device 104, or combined with the control module 103 to form a device, or the terminal device 101 may be separately provided, which is not limited in this embodiment of the present application.
In the embodiment of the present application, the terminal device 101 generally refers to various terminal devices such as a personal computer (Personal Computer, PC), a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), a mobile internet device (Mobile Internet Device, MID) and the like capable of running a method program for acquiring correction coefficients, and the embodiment of the present application is not limited.
The method for obtaining the correction coefficient provided in the embodiment of the present application will be described in detail below based on the application scenario corresponding to fig. 1, and other application scenarios may be implemented with reference to the embodiment of the present application.
It should be understood that the sequence number of each step in this embodiment does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.
Referring to fig. 2, a flowchart of a method for obtaining a correction coefficient according to an embodiment of the present application is shown. As shown in fig. 2, the method for obtaining the correction coefficient may include the steps of:
step 201, obtaining a first display image when the display screen to be corrected is configured to display a composite color.
In this embodiment of the present application, the display screen to be corrected being configured to display a composite color may mean that the display screen to be corrected is set to display a composite color, and then the display screen to be corrected may display the first display image according to the display attribute of the light point on each pixel position of the display screen to be corrected. Since the display attribute of each light point may be different, the optical data of each pixel point in the first display image may also be different from the optical data corresponding to the set composite color, that is, the composite color is the set color, and the first display image is the image actually displayed on the display screen to be corrected.
Wherein the composite color is generated from at least two primary colors, a primary color being a "primary color" that cannot be derived by mixing and blending of other colors, i.e., at least two primary colors may be at least two of red, green, blue.
For example, if the display screen to be corrected is configured to display a composite color of white, the white may be generated by red, green, and blue based on a certain blending ratio; assuming that the display screen to be corrected is configured to display a composite color of cyan, cyan may be generated from green and blue based on a certain blending ratio; assuming that the display screen to be corrected is configured to display a composite color of magenta, magenta may refer to a color generated from red and blue based on a certain blending ratio; assuming that the display screen to be corrected is configured to display a composite color of yellow, yellow may refer to red and green generated based on a certain blending ratio. Thus, it can be derived from the above examples that the composite color is generated from at least two primary colors.
As one possible implementation manner, obtaining a first display image when the display screen to be corrected is configured to display a composite color includes:
receiving a screen-printing instruction input by a user to control a display screen to be corrected to display images after executing the screen-printing instruction;
and according to the image display after the display screen to be corrected executes the screen-making instruction, acquiring a first display image when the shot display screen to be corrected is configured to display a composite color.
In this embodiment of the present application, the screen-printing instruction includes gray-scale data and color data of each pixel bit on the display screen to be corrected, and after the display screen to be corrected receives the screen-printing instruction, the display is performed according to the color data and the gray-scale data of each pixel bit, for example, the screen-printing instruction indicates that the color data of each pixel bit is yellow and the gray-scale data is 160, and then the display screen to be corrected may perform image display under the condition of being configured to display yellow 160 gray scale. After the display screen to be corrected executes the screen-printing instruction to display the corresponding image, the terminal equipment can acquire a first display image which is shot by the image acquisition device (namely a camera) and is displayed after the display screen to be corrected executes the screen-printing instruction.
As one possible implementation, the camera may choose to use an XYZ filter or a bell filter when capturing the first display image.
For example, if the composite color of the display screen to be corrected is white generated based on three primary colors and the filter used is an XYZ filter, the rotation of the filter wheel in the camera may be controlled to obtain three channel color data of the display screen to be corrected, where the three channel color data refer to the color data corresponding to XYZ respectively, and the color data corresponding to XYZ respectively may represent the optical data of the display screen to be corrected when displaying white. The three-channel color data of the display screen to be corrected can be obtained specifically by the following modes:
in practical application, the filter wheel in the camera is controlled to rotate, three display images respectively collected by the camera under the X filter, the Y filter and the Z filter are obtained, and according to the three display images, color data of three channels of the display screen to be corrected can be obtained, so that optical data of the display screen to be corrected when displaying white is obtained, and the optical data are used for determining a target correction coefficient.
For example, as a preferable scheme, if the composite color of the display screen to be corrected is white generated based on three primary colors, and the filter used is a bayer filter (the bayer filter is usually applied to a digital camera), then the display image of the display screen to be corrected when the display screen to be corrected is configured to display white can be directly collected under the bayer filter, RGB color data corresponding to the display screen to be corrected when the display screen to be corrected is configured to display white can be directly collected from the display image, and according to the RGB color data, XYZ corresponding to the display screen to be corrected can be obtained through calculation to respectively correspond to the color data, so as to obtain optical data of the display screen to be corrected when the display screen is configured to display white, and the optical data is used for determining a target correction coefficient.
It should be understood that when using the bayer filter, only one first display image needs to be acquired, while when using the XYZ filter, three first display images need to be acquired, so when using the bayer filter, the acquisition speed of the optical data is greatly improved when determining the target correction coefficient.
It should be noted that the above examples are only exemplary and should not be construed as limiting the present application. In the actual use process, a proper filter disc can be used according to the specific color to be corrected, and the embodiment of the application is not limited to this.
As a possible implementation, since the exposure time corresponding to each color is mostly different, when capturing the display images corresponding to different colors, it is necessary to use the exposure time corresponding to the capturing color for capturing, respectively. For example, the exposure time of blue in red, green and blue is longer, the acquisition time is longer, and the exposure time of mixed colors is shorter, and the acquisition time is shorter.
As a possible implementation manner, before determining, according to the first display image, at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors, a third display image when the display screen to be corrected is configured to display a composite color may be obtained, and according to the third display image, device parameters of the image capturing device are adjusted, so that the device parameters of the image capturing device meet the capturing requirement, for example, device parameters (such as exposure time, etc.) of the camera are adjusted to be target parameters corresponding to the display color.
It should be appreciated that the third display image may be the same display image as the first display image or may be a different display image.
Step 202, determining at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors according to the first display image.
In the embodiment of the application, at least two target correction coefficients corresponding to each pixel bit are determined by a processor in the terminal device through analyzing optical data of the first display image, and as the composite color is generated by at least two primary colors, the at least two target coefficients corresponding to the correction of the at least two primary colors can be obtained according to the first display image, and the data acquisition efficiency of the display screen during correction can be improved and the correction time cost can be saved under the condition of ensuring the correction effect by acquiring a composite color image to generate the at least two target correction coefficients.
The at least two target correction coefficients are in one-to-one correspondence with the at least two primary colors, and the at least two target correction coefficients are used for correcting the lamp points of the corresponding primary colors.
As a possible implementation manner, according to the first display image, determining at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors, respectively includes:
Extracting optical data according to the first display image to obtain optical data of each pixel position on the display screen to be corrected;
acquiring target optical data corresponding to each of at least two primary colors;
and generating at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors according to the optical data of each pixel bit on the display screen to be corrected and the target optical data corresponding to each primary color in the at least two primary colors.
Wherein, the optical data comprises at least one of brightness and chromaticity, when the optical data is brightness, the obtained correction coefficient can be used for brightness correction of the display screen to be corrected; when the optical data is chromaticity, the obtained correction coefficient can be used for chromaticity correction of the display screen to be corrected.
It should be understood that, the correction coefficient obtained by the method in the embodiment of the present application may perform luminance correction or chrominance correction on the display screen to be corrected according to different optical data, and preferably may perform luminance correction.
In the embodiment of the present application, since the primary data of the luminance and chrominance in the first display image collected by the camera is typically RGB values, RGB is also referred to as three primary colors, where R represents red, G represents green, and B represents blue. The RGB mode is also called an RGB color space, which is a color light representation mode, and most devices capable of emitting light are all applied RGB color modes, but RGB is a method depending on the device to generate colors, which is not sufficient for expressing the quality of products, so that the collected first display image needs to be subjected to optical data extraction, the RGB values collected by a camera are converted into tristimulus values, and then the optical data corresponding to each display pixel in the first display image is obtained according to the tristimulus values, and further the optical data of each pixel bit on the display screen to be corrected is obtained through conversion.
For example, assuming that the tristimulus values of each display pixel in the first display image are XYZ, respectively, the tristimulus values XYZ may be converted into chromaticity coordinates (x, y), where the conversion into chromaticity coordinates may use the following two formulas: x=x/(x+y+z), y=y/(x+y+z), and the chromaticity of each display pixel in the first display image is obtained according to the two formulas; further, since Y in the tristimulus values generally represents luminance, the Y value in the tristimulus values of each display pixel obtained can be taken as the luminance of each display pixel in the first display image.
As a possible implementation manner, the target optical data corresponding to each of the at least two primary colors on the display screen to be corrected may use the preset optical data corresponding to each of the at least two primary colors as the target optical data corresponding to each of the at least two primary colors, or the optical data when the display screen to be corrected displays each of the at least two primary colors respectively is directly collected by the light gun as the target optical data. The optical data of the display screen to be corrected is directly collected by the light gun and is not influenced by the coupling between the lamp points, so that the optical data corresponding to each primary color collected by the light gun can be used as target optical data.
For example, when the composite color displayed on the display screen to be corrected is generated by two primary colors, the display screen to be corrected is made to display the two primary colors (for example, the primary color a and the primary color B) in sequence by screen printing through a computer, and when the primary color a is displayed, the optical data corresponding to the primary color a is collected through the optical gun, the optical data corresponding to the primary color a is collected as the target optical data corresponding to the primary color a by the optical gun, and when the primary color B is displayed, the optical data corresponding to the primary color B is collected by the optical gun, and the optical data corresponding to the primary color B is collected as the target optical data corresponding to the primary color B by the optical gun.
For example, if the composite color displayed on the display screen to be corrected is generated by three primary colors, the display screen to be corrected is made to display the three primary colors, for example, the primary color a, the primary color B and the primary color C, in sequence by computer screen printing, and when the primary color a is displayed, the optical data corresponding to the primary color a is collected by the optical gun, when the primary color B is displayed, the optical data corresponding to the primary color B is collected by the optical gun, and when the primary color C is displayed, the optical data corresponding to the primary color C is collected by the optical gun, and the collected optical data corresponding to each primary color is used as the target optical data corresponding to each primary color.
The generation of at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors may be specifically illustrated by referring to the following examples:
For example, assuming that the composite color is white, brightness correction is performed for a pixel, when brightness comparison is performed, firstly, optical data corresponding to the pixel when the display screen to be corrected displays white, namely, tristimulus values W-X, W-Y, W-Z corresponding to white are obtained, then, respectively, target optical data corresponding to red, green and blue, namely, tristimulus values R-X, R-Y, R-Z corresponding to red, tristimulus values G-X, G-Y, G-Z corresponding to green and tristimulus values B-X, B-Y, B-Z corresponding to blue, are obtained, and after the known information is obtained, three target correction coefficients corresponding to the pixel can be obtained through the following equations:
α(R-X)+β(G-X)+γ(B-X)＝W-X
α(R-Y)+β(G-Y)+γ(B-Y)＝W-Y
α(R-Z)+β(G-Z)+γ(B-Z)＝W-Z
from the above known information, the above equations are solved, and three equations and three unknowns are known, so that the values of α, β, and γ can be solved. Wherein α is a target correction coefficient corresponding to the pixel bit when red correction is performed, β is a target correction coefficient corresponding to the pixel bit when green correction is performed, and γ is a target correction coefficient corresponding to the pixel bit when blue correction is performed.
It should be understood that, in the above example of the method for obtaining the correction coefficient, the optical data of the composite color is collected to obtain the correction coefficients corresponding to the primary colors for generating the composite color, and the correction coefficient obtained by using the scheme can perform an equalization on the correction effect of the pure color (i.e. one primary color) and the correction effect of the composite color.
It should also be appreciated that the above-described manner of obtaining the correction coefficients is merely an example, and that a plurality of ways of extracting optical data of pure colors of red, green, and blue based on the composite color image and obtaining the target correction coefficients from the optical data may be employed.
As a possible implementation manner, according to the first display image, the extracting optical data is performed to obtain optical data of each pixel bit on the display screen to be corrected, including:
after the display screen to be corrected is configured to display the composite color, acquiring optical data of each display pixel on the first display image;
and determining the optical data of each pixel bit on the display screen to be corrected according to the optical data of each display pixel on the display screen to be corrected and the conversion relation between the display pixels and the pixel bit.
Wherein, the display pixel on the first display image may refer to the smallest display unit (i.e., pixel point) in the first display image.
In this embodiment of the present application, the display screen to be corrected is formed by a plurality of pixel bits, and each pixel bit may at least include three lamps of red, green and blue. When the light points in the pixel positions are displayed, the camera can be used for directly shooting the color displayed in the pixel positions, and when the camera shoots a display screen to be corrected, the number of display pixels occupied by the color displayed in one pixel position in the shot image is different due to different distances between the camera and the display screen to be corrected.
It should be appreciated that each pixel bit may include a plurality of lights, for example, each pixel bit may include a red light, a green light, and a blue light. For another example, each pixel bit may include a red light, a green light, and two blue light lights. If each pixel position on the display screen to be corrected only comprises one lamp point, the display screen to be corrected is a single-color display screen; if each pixel position on the display screen to be corrected comprises a plurality of light points, the display screen to be corrected is a color display screen.
For example, when the camera is far from the display screen to be corrected under the condition that the size of each lamp point is the same on the display screen to be corrected, the color displayed by one pixel position may occupy 3×3 display pixels in the image shot by the camera; when the camera is closer to the display screen to be corrected, one pixel may occupy 5×5 display pixels in the image captured by the camera.
I.e. the further the camera is from the display screen to be corrected, the fewer the number of display pixels the color of one pixel bit displays. Therefore, according to the conversion relationship between the pixel bit and the display pixel, the optical data of each pixel bit on the display screen to be corrected is determined from the acquired optical data (i.e. the original data in the image) of each display pixel.
As a possible implementation manner, after determining the at least two target correction coefficients, correction may be performed when the display screen to be corrected is configured to display at least two primary colors respectively according to the at least two target correction coefficients corresponding to each pixel bit.
The display screen to be corrected is configured to display target correction coefficients corresponding to at least two primary colors.
For example, assuming that the primary colors are white, three primary colors of red, green and blue are generated according to a certain proportion, at this time, according to the first display image, three target correction coefficients corresponding to each pixel bit can be obtained, which are a target correction coefficient for correcting red, a target correction coefficient for correcting green and a target correction coefficient for correcting blue, respectively. Therefore, the display screen to be corrected can be corrected when configured to display red, green, and blue, respectively, according to the three target correction coefficients.
For example, assuming that the primary color is yellow, two primary colors of red and green are generated according to a certain proportion, at this time, according to the first display image, two target correction coefficients corresponding to each pixel bit can be obtained, which are a target correction coefficient for correcting red, a target correction coefficient for correcting green, and a target correction coefficient for correcting blue, respectively. According to the two target correction coefficients, the display screen to be corrected is configured to display red and green respectively.
In the embodiment of the application, first, a first display image is acquired when a display screen to be corrected is configured to display a composite color, wherein the composite color is generated by at least two primary colors, and at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors are respectively determined according to the first display image. In the scheme, the composite color is generated by at least two primary colors, and the composite color image contains the composite color optical data, so that at least two corresponding target coefficients when at least two primary colors are corrected can be obtained according to the first display image, and the display effect of the composite color can be improved while the monochromatic correction effect is ensured.
Referring to fig. 3, a flowchart of a method for obtaining a correction coefficient according to a second embodiment of the present application is shown. As shown in fig. 3, the method for obtaining the correction coefficient may include the steps of:
step 301, obtaining a first display image when the display screen to be corrected is configured to display a composite color.
In embodiments of the present application, the composite color is generated from two primary colors, such as cyan, magenta, and yellow, which may refer to being generated from green and blue based on a certain blending ratio; magenta can refer to a color produced from red and blue based on a certain blend ratio; yellow may refer to the generation of red and green based on a certain blending ratio.
The display screen to be corrected being configured to display a composite color may mean that the display screen to be corrected is set to display a composite color, and then the display screen to be corrected may display the first display image according to the display attribute of the light point on each pixel position of the display screen to be corrected. Since the display attribute of each light point may be different, the optical data of each pixel point in the first display image may also be different from the optical data corresponding to the set composite color, that is, the composite color is the set color, and the first display image is the image actually displayed on the display screen to be corrected.
Step 302, obtaining a second display image when the display screen to be corrected is configured to display the target primary color.
In the embodiment of the present application, in order to enable the generated correction coefficients to correct the display screen to display red, green, and blue colors, respectively, it is therefore necessary to acquire the second display image when the display screen to be corrected is configured to display the target primary color, where the target primary color is a color other than the two primary colors that generate the composite color, for example, when the composite color is cyan, the target primary color is red, if the composite color is generated from two primary colors; when the composite color is magenta, the target primary color is green; when the composite color is yellow, the target primary color is blue.
It should be understood that, the method for specifically acquiring the second display image when the display screen to be corrected is configured to display the target primary color is the same as the method for acquiring the first display image when the display screen to be corrected is configured to display a composite color, and reference may be made to the specific implementation methods of step 101 and step 301, which are not described herein.
Step 303, determining two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display two primary colors and a target correction coefficient corresponding to each pixel bit when the display screen to be corrected is configured to display the target primary colors according to the first display image and the second display image.
And the target correction coefficient corresponding to each pixel bit is used for correcting when the display screen to be corrected is configured to display the target primary color.
In this embodiment of the present application, since only two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display two primary colors can be determined according to the first display image, and correction cannot be performed when the display screen to be corrected is configured to display the target primary colors, it is necessary to determine, according to the second display image, a target correction coefficient corresponding to each pixel bit when the display screen to be corrected is configured to display the target primary colors.
It should be understood that, according to the second display image, a specific implementation method of determining a target correction coefficient corresponding to each pixel bit when the display screen to be corrected is configured to display the target primary colors is the same as a specific implementation method of determining at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors according to the first display image, which will be referred to the specific implementation method of step 102 and will not be described herein.
As a possible implementation manner, after determining the plurality of target correction coefficients corresponding to each pixel bit, the method further includes: and correcting when the display screen to be corrected is configured to display the target primary colors according to the target correction coefficient corresponding to each pixel bit when the display screen to be corrected is configured to display the target primary colors.
In this embodiment of the present application, a target correction coefficient corresponding to each pixel bit when configured as a target primary color is further required to be used to correct when the display screen to be corrected is configured to display the target primary color, so as to implement correction of three primary colors and correction of white.
In the embodiment of the present application, when the composite color is generated by two primary colors, it is necessary to obtain a target correction coefficient corresponding to another primary color of the three primary colors, and correct the display screen to be corrected when the display screen to be corrected is configured to display the three primary colors according to the obtained three target correction coefficients, so as to achieve a correction effect of correcting the display screen to be corrected when the display screen to be corrected is configured to display the three primary colors according to the acquired display image corresponding to the three primary colors in the prior art. However, for the prior art, when the display screen to be corrected is configured to display three primary colors respectively for correction, the embodiment of the application can acquire the display image of the display screen to be corrected configured to display white, or acquire the composite color generated by the two primary colors and the target primary color, and does not need to acquire the images corresponding to the three primary colors respectively, thereby improving the data acquisition efficiency and saving the correction time cost.
Compared with the first embodiment, the embodiment of the present application can make the display screen to be corrected configured to display the composite color generated by the two primary colors, and acquire the first display image of the display screen to be corrected configured to display the composite color, because the composite color is generated by the two primary colors at this time, the second display image when the display screen to be corrected is configured to display the target primary colors is also required to be acquired, corresponding target correction coefficients are generated according to the first display image and the second display image respectively, the display effect of at least two primary colors of the display screen to be corrected configured to display the composite color is corrected according to the two corresponding target correction coefficients, and the display effect of the target primary colors is corrected according to the other target correction coefficient.
Referring to fig. 4, a schematic structural diagram of a device for acquiring a correction coefficient according to the third embodiment of the present application is shown, and for convenience of explanation, only a portion related to the embodiment of the present application is shown.
The device for acquiring the correction coefficient specifically comprises the following modules:
an image acquisition module 401, configured to acquire a first display image when the display screen to be corrected is configured to display a composite color, where the composite color is generated by at least two primary colors;
the coefficient determining module 402 is configured to determine, according to the first display image, at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors, where the at least two target correction coefficients are determined by the processor by analyzing optical data of the first display image, the at least two target correction coefficients are in one-to-one correspondence with the at least two primary colors, and the at least two target correction coefficients are used for correcting the light points corresponding to the primary colors.
In the embodiment of the present application, when the composite color is white generated based on three primary colors, the image acquisition module may specifically include the following sub-modules:
the display image acquisition sub-module is used for acquiring three first display images when the display screen to be corrected is configured to display white, wherein the first display images are acquired through the image acquisition equipment, and the three first display images are respectively display images acquired by the image acquisition equipment under the X filter disc, the Y filter disc and the Z filter disc.
In the embodiment of the present application, in a case where the composite color is generated by two primary colors, the apparatus for acquiring the correction coefficient further includes:
the primary color image acquisition module is used for acquiring a second display image when the display screen to be corrected is configured to display a target primary color, wherein the target primary color is a primary color except for two primary colors forming a composite color in three primary colors;
correspondingly, the coefficient determination module 402 may specifically further include the following sub-modules:
the coefficient generation sub-module is used for respectively determining two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display two primary colors and one target correction coefficient corresponding to each pixel bit when the display screen to be corrected is configured to display the target primary colors according to the first display image and the second display image, and one target correction coefficient corresponding to each pixel bit when the display screen to be corrected is configured to display the target primary colors.
In the embodiment of the present application, the image acquisition module 401 may specifically include the following sub-modules:
the screen printing sub-module is used for receiving a screen printing instruction input by a user to control the display screen to be corrected to display images after executing the screen printing instruction, wherein the screen printing instruction comprises gray scale data and color data of each pixel bit on the display screen to be corrected;
The instruction execution sub-module is used for obtaining a first display image when the shot display screen to be corrected is configured to display a composite color according to the image display after the display screen to be corrected executes the screen-making instruction.
In the embodiment of the present application, the coefficient determining module 402 may specifically include the following sub-modules:
the extraction sub-module is used for extracting optical data according to the first display image to obtain optical data of each pixel position on the display screen to be corrected, wherein the optical data comprises at least one of brightness and chromaticity;
the data acquisition sub-module is used for acquiring target optical data corresponding to each primary color of at least two primary colors;
and the correction coefficient generation sub-module is used for generating at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display at least two primary colors according to the optical data of each pixel bit on the display screen to be corrected and the target optical data corresponding to each primary color in the at least two primary colors.
In this embodiment of the present application, the data acquisition submodule may specifically include the following units:
the acquisition unit is used for acquiring optical data corresponding to each primary color through the light gun after the display screen to be corrected is configured to display at least two primary colors respectively, and determining the optical data acquired by the light gun as target optical data; or (b)
And the preset determining unit is used for using the preset optical data corresponding to at least two primary colors respectively as target optical data corresponding to each primary color in the at least two primary colors.
In the embodiment of the application, the image acquisition device is installed in a device for acquiring the correction coefficient, and the first display image is acquired through the image acquisition device, and a filter disc built in the image acquisition device is a Bell filter disc.
In this embodiment of the present application, the device for obtaining the correction coefficient may specifically further include the following modules:
the display image acquisition module is used for acquiring a third display image when the display screen to be corrected is configured to display the composite color;
and the parameter adjusting module is used for adjusting the equipment parameters of the image acquisition equipment according to the third display image so as to enable the equipment parameters of the image acquisition equipment to meet the acquisition requirements.
The device for acquiring the correction coefficient provided in the embodiment of the present application may be applied to the foregoing method embodiment, and details refer to the description of the foregoing method embodiment, which is not repeated herein.
Fig. 5 is a schematic structural diagram of a terminal device according to a fourth embodiment of the present application. As shown in fig. 5, the terminal device 500 of this embodiment includes: at least one processor 510 (only one shown in fig. 5), a memory 520, and a computer program 521 stored in the memory 520 and executable on the at least one processor 510, the steps in the above-described method embodiments of obtaining correction coefficients being implemented when the processor 510 executes the computer program 521.
The terminal device 500 may be a computing device such as a desktop computer, a notebook computer, a palm computer, a cloud server, etc. The terminal device may include, but is not limited to, a processor 510, a memory 520. It will be appreciated by those skilled in the art that fig. 5 is merely an example of a terminal device 500 and is not limiting of the terminal device 500, and may include more or fewer components than shown, or may combine certain components, or different components, such as may also include input-output devices, network access devices, etc.
The processor 510 may be a central processing unit (Central Processing Unit, CPU), the processor 510 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 520 may in some embodiments be an internal storage unit of the terminal device 500, such as a hard disk or a memory of the terminal device 500. The memory 520 may also be an external storage device of the terminal device 500 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the terminal device 500. Further, the memory 520 may also include both an internal storage unit and an external storage device of the terminal device 500. The memory 520 is used to store an operating system, application programs, boot Loader (Boot Loader), data, and other programs, such as program code of the computer program. The memory 520 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each method embodiment described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
The implementation of all or part of the flow of the method of the above embodiment may also be accomplished by a computer program product, which when run on a terminal device, causes the terminal device to perform the steps of the method embodiments described above.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (12)

1. A method of obtaining correction coefficients, comprising:
acquiring a first display image when a display screen to be corrected is configured to display a composite color, wherein the composite color is generated by at least two primary colors;
according to the first display image, at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors are respectively determined, the at least two target correction coefficients are determined by a processor through analyzing optical data of the first display image, the at least two target correction coefficients are in one-to-one correspondence with the at least two primary colors, and the at least two target correction coefficients are used for correcting lamp points corresponding to the primary colors.
2. The method for obtaining a correction coefficient according to claim 1, wherein the composite color is white generated based on three primary colors, the obtaining a first display image when the display screen to be corrected is configured to display a composite color, comprising:
three first display images when the display screen to be corrected is configured to display white are acquired, wherein the first display images are acquired through an image acquisition device, and the three first display images are respectively display images acquired by the image acquisition device under an X filter, a Y filter and a Z filter.
3. The method for obtaining correction coefficients according to claim 1, wherein the composite color is generated by two primary colors, and further comprising, before the determining, based on the first display image, at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors, respectively:
acquiring a second display image when the display screen to be corrected is configured to display a target primary color, wherein the target primary color is a primary color except for two primary colors for generating the composite color in three primary colors;
according to the first display image, the method respectively determines at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors, and further includes:
According to the first display image and the second display image, respectively determining two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the two primary colors, and a target correction coefficient corresponding to each pixel bit when the display screen to be corrected is configured to display the target primary colors, wherein the target correction coefficient corresponding to each pixel bit when the display screen to be corrected is configured to display the target primary colors is used for correcting the display screen to be corrected when the display screen to be corrected is configured to display the target primary colors.
4. The method for obtaining correction coefficients according to claim 1, wherein obtaining a first display image when the display screen to be corrected is configured to display a composite color comprises:
receiving a screen-printing instruction input by a user to control the display screen to be corrected to display images after executing the screen-printing instruction, wherein the screen-printing instruction comprises gray scale data and color data of each pixel bit on the display screen to be corrected;
and according to the image display of the display screen to be corrected after the screen-making instruction is executed, acquiring a first display image when the shot display screen to be corrected is configured to display a composite color.
5. The method for obtaining correction coefficients according to claim 1, wherein the determining, according to the first display image, at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors includes:
Extracting optical data according to the first display image to obtain optical data of each pixel position on the display screen to be corrected, wherein the optical data comprises at least one of brightness and chromaticity;
acquiring target optical data corresponding to each of the at least two primary colors;
generating at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors according to the optical data of each pixel bit on the display screen to be corrected and the target optical data corresponding to each primary color in the at least two primary colors.
6. The method of obtaining correction factors as set forth in claim 5, wherein said obtaining target optical data corresponding to each of said at least two primary colors includes:
after the display screen to be corrected is configured to display the at least two primary colors respectively, optical data corresponding to each primary color is collected through a light gun, and the optical data collected by the light gun is determined to be the target optical data; or (b)
And using the preset optical data corresponding to the at least two primary colors as target optical data corresponding to each primary color of the at least two primary colors.
7. The method of acquiring correction coefficients according to claim 1, wherein the first display image is acquired by an image acquisition apparatus, wherein a filter built in the image acquisition apparatus is a bayer filter.
8. The method of obtaining correction coefficients according to claim 1, wherein before determining at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors, respectively, from the first display image, the method further comprises:
acquiring a third display image when the display screen to be corrected is configured to display the composite color;
and according to the third display image, adjusting the equipment parameters of the image acquisition equipment so as to enable the equipment parameters of the image acquisition equipment to meet acquisition requirements.
9. An apparatus for obtaining a correction coefficient, wherein the apparatus for obtaining a correction coefficient comprises:
the image acquisition module is used for acquiring a first display image when the display screen to be corrected is configured to display a composite color, wherein the composite color is generated by at least two primary colors;
the system comprises a coefficient determining module, a processor and a display screen, wherein the coefficient determining module is used for respectively determining at least two target correction coefficients corresponding to each pixel bit when the display screen to be corrected is configured to display the at least two primary colors according to the first display image, the at least two target correction coefficients are determined by the processor through analyzing optical data of the first display image, the at least two target correction coefficients are in one-to-one correspondence with the at least two primary colors, and the at least two target correction coefficients are used for correcting the lamp points of the corresponding primary colors.
10. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 8 when executing the computer program.
11. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the method according to any one of claims 1 to 8.
12. A display screen control apparatus for controlling a display screen, the apparatus comprising:
a memory for storing correction coefficients obtained according to the method of any one of claims 1 to 8;
and the processor is used for correcting the display screen according to the correction coefficient.
CN202211207833.6A 2022-09-30 2022-09-30 Method, device, terminal equipment, control equipment and medium for acquiring correction coefficient Pending CN117854422A (en)

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