CN111179801B - Color space adjustment method, device and system of display panel - Google Patents

Color space adjustment method, device and system of display panel Download PDF

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CN111179801B
CN111179801B CN202010009381.5A CN202010009381A CN111179801B CN 111179801 B CN111179801 B CN 111179801B CN 202010009381 A CN202010009381 A CN 202010009381A CN 111179801 B CN111179801 B CN 111179801B
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color
color space
standard
colors
display
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CN111179801A (en
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管恩慧
冈村政和
张晓�
王显
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BOE Technology Group Co Ltd
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BOE Technology Group 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
    • 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
    • G09G2340/06—Colour space transformation

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Color Image Communication Systems (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

The disclosure provides a color space adjustment method of a display panel, and belongs to the technical field of display. The color space adjusting method of the display panel comprises the steps of inputting display information of a standard image with a first standard color of a first color space to the display panel; acquiring coordinate parameters of the colors of the display picture in CIE XYZ color space; acquiring a first adjustment parameter, wherein the first adjustment parameter can convert the coordinate parameter of a first standard color in a first color space into the coordinate parameter of the color of a display picture in a CIE XYZ color space; acquiring coordinate parameters of a second standard color of a second color space in a CIE XYZ color space; acquiring a second adjustment parameter, wherein the second adjustment parameter can convert the coordinate parameter of the color of the display picture in the CIE XYZ color space into the coordinate parameter of the second standard color in the CIE XYZ color space; the first adjustment parameter and the second adjustment parameter are input into the display panel. The color space adjusting method of the display panel can improve the color space adjusting efficiency.

Description

Color space adjustment method, device and system of display panel
Technical Field
The disclosure relates to the field of display technologies, and in particular, to a method, a device and a system for adjusting a color space of a display panel.
Background
With the development of display technology, people have increasingly high requirements on the quality and color space of display pictures. However, in the conventional image processing technology, the adjustment speed of the image color space is slow, which restricts the productivity of the display panel.
The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The disclosure aims to provide a color space adjustment method, device and system for a display panel, which improve the color space adjustment efficiency of the display panel.
In order to achieve the above purpose, the present disclosure adopts the following technical scheme:
according to a first aspect of the present disclosure, there is provided a color space adjustment method of a display panel, including:
inputting display information of a standard image with a first standard color to the display panel, wherein the first standard color is a standard color of a first color space, and the display information of the standard image comprises coordinate parameters of the first standard color in the first color space;
acquiring coordinate parameters of colors of a display picture in CIE XYZ color space, wherein the display picture is displayed by the display panel in response to display information of the standard image;
acquiring a first adjustment parameter, wherein the first adjustment parameter can convert a coordinate parameter of the first standard color in a first color space into a coordinate parameter of the color of the display picture in a CIE XYZ color space;
acquiring coordinate parameters of a second standard color in a CIE XYZ color space, wherein the second standard color is a standard color of the second color space;
acquiring a second adjustment parameter, wherein the second adjustment parameter can convert the coordinate parameter of the color of the display picture in the CIE XYZ color space into the coordinate parameter of the second standard color in the CIE XYZ color space;
and inputting the first adjustment parameter and the second adjustment parameter into the display panel.
In one exemplary embodiment of the present disclosure, acquiring coordinate parameters of colors of a display screen in CIE XYZ color space includes:
acquiring color coordinates and brightness parameters of the color of the display picture in a CIE xyY color space;
and calculating X coordinate values, Y coordinate values and Z coordinate values of the color of the display picture in the CIE XyY color space according to the color coordinates and brightness parameters of the color of the display picture in the CIE XyY color space.
In one exemplary embodiment of the present disclosure, acquiring color coordinates and brightness parameters of colors of the display in a CIE xyY color space includes:
detecting color coordinates and brightness parameters of colors of a central area of the display picture in a CIE xyY color space;
and determining the color coordinates and the brightness parameters of the color of the display picture in the CIE xyY color space according to the color coordinates and the brightness parameters of the color of the central area of the display picture in the CIE xyY color space.
In one exemplary embodiment of the present disclosure, obtaining the first adjustment parameter includes:
obtaining a first transformation matrix [ M ]] 3X3 As a first adjustment parameter, a first conversion matrix [ M ]] 3X3 The method meets the following conditions:
wherein,coordinate parameters of the colors of the display picture in CIE XYZ color space; />Is a coordinate parameter of the first standard color in a first color space.
In one exemplary embodiment of the present disclosure, obtaining the second adjustment parameter includes:
obtaining a second conversion matrix [ N ]] 3X3 As a second adjustment parameter, a second conversion matrix [ N ]] 3X3 The method meets the following conditions:
wherein,coordinate parameters of the colors of the display picture in CIE XYZ color space; />Is a coordinate parameter of the second standard color in the CIE XYZ color space.
In an exemplary embodiment of the present disclosure, the first color space and the second color space are different and are selected from the group consisting of sRGB color space, BT709 color space, bt.2020 color space, DCI P3-D65 color space, adobe RGB color space, apple RGB color space, respectively.
In an exemplary embodiment of the present disclosure, inputting display information of a standard image having a first standard color to the display panel includes:
sequentially inputting display information of standard images with different colors of first standard colors to the display panel;
the method for obtaining the coordinate parameters of the colors of the display picture in the CIE XYZ color space comprises the following steps:
after display information of a standard image is input to the display panel each time, color coordinates and brightness parameters of colors of the display pictures corresponding to the first standard colors in a CIE xyY color space are obtained;
calculating coordinate parameters of the colors of the display pictures corresponding to the first standard colors in the CIE XyY color space according to the color coordinates and the brightness parameters of the colors of the display pictures in the CIE XyY color space;
the obtaining of the first adjustment parameter includes:
acquiring first adjustment parameters corresponding to the first standard colors, wherein the first adjustment parameters corresponding to any one of the first standard colors can convert coordinate parameters of the first standard colors in a first color space into coordinate parameters of colors of display pictures corresponding to the first standard colors in a CIE XYZ color space;
inputting the first adjustment parameter into the display panel includes:
and inputting the first adjustment parameters corresponding to the first standard colors into the display panel.
In one exemplary embodiment of the present disclosure, obtaining the coordinate parameters of the second standard color in the CIE XYZ color space includes:
acquiring coordinate parameters of a plurality of second standard colors in a CIE XYZ color space, wherein each first standard color corresponds to each second standard color one by one;
the obtaining of the second adjustment parameter includes:
acquiring second adjustment parameters corresponding to the second standard colors, wherein the second adjustment parameters corresponding to any one of the second standard colors can convert coordinate parameters of the colors of the display pictures corresponding to the first standard colors in the CIE XYZ color space into coordinate parameters of the second standard colors in the CIE XYZ color space;
inputting the second adjustment parameter into the display panel includes:
and inputting second adjustment parameters corresponding to the second standard colors into the display panel.
According to a second aspect of the present disclosure, there is provided a color space adjustment apparatus of a display panel, including a processor, a player, and an optical tester; wherein,
the player is used for responding to a play instruction input by the processor, inputting display information of a standard image with a first standard color to the display panel, wherein the first standard color is a standard color of a first color space, and the display information of the standard image comprises coordinate parameters of the first standard color in the first color space;
the optical tester is used for collecting color information of a display picture, wherein the display picture is displayed by the display panel in response to the display information of the standard image;
the processor is connected with the player and the optical tester and is used for sending the playing instruction to the player and receiving the color information of the display picture;
the processor is further configured to obtain, according to color information of the display screen, a coordinate parameter of a color of the display screen in a CIE XYZ color space, and obtain a first adjustment parameter, where the first adjustment parameter is capable of converting the coordinate parameter of the first standard color in the first color space into a coordinate parameter of the color of the display screen in the CIE XYZ color space;
the processor is further configured to obtain a coordinate parameter of a second standard color in a CIE XYZ color space, where the second standard color is a standard color of the second color space, and obtain a second adjustment parameter, where the second adjustment parameter is capable of converting the coordinate parameter of the color of the display screen in the CIE XYZ color space into the coordinate parameter of the second standard color in the CIE XYZ color space;
the processor is further configured to output the first adjustment parameter and the second adjustment parameter to the display panel.
According to a third aspect of the present disclosure, there is provided a color space adjustment system of a display panel, comprising a display panel and the color space adjustment apparatus of the display panel described above, wherein,
the display panel is connected with the player through a high-speed data line;
the optical tester includes a camera that is aligned with a central region of the display panel.
In the color space adjustment method, the device and the system for the display panel, the first adjustment parameter reflecting the screen characteristic can be obtained, the second adjustment parameter for adjusting the color space of the color of the display picture to the second color space can be obtained, and the first adjustment parameter and the second adjustment parameter are written into the display panel. When the display panel works and receives the display information of the image to be displayed described by adopting the first color space, the display information of the image to be displayed can be corrected directly according to the first adjustment parameter and the second adjustment parameter, and then the display panel displays the display information of the image to be displayed according to the corrected display information, so that the color of the display picture displayed by the display panel accords with the standard of the second color space. In this way, with the aid of the first adjustment parameter and the second adjustment parameter of the present disclosure, the color space of the color of the display screen can be adjusted to the second color space.
According to the color space adjustment method of the display panel, repeated detection and verification of the display pictures corresponding to the standard images of the same first standard color are not needed, the first adjustment parameters and the second adjustment parameters can be obtained only by detecting the display pictures corresponding to the same standard image once, the method is simple and efficient, the color space adjustment efficiency of the display panel can be improved, and the time consumption is reduced.
Drawings
The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a flowchart illustrating a color space adjustment method of a display panel according to an embodiment of the disclosure.
Fig. 2 is a schematic structural diagram of a color space adjustment system of a display panel according to an embodiment of the present disclosure.
Fig. 3 is a color space diagram of colors of a display screen before color space adjustment of a display panel according to an embodiment of the present disclosure.
Fig. 4 is a color space diagram of colors of a display screen after color space adjustment of a display panel according to an embodiment of the present disclosure.
The main element reference numerals in the drawings are explained as follows:
100. a processor; 200. a player; 300. an optical tester; 400. a display panel; 500. DCI P3-D65 color space; 600. BT709 color space; 701. color space of color of display screen before color space adjustment; 702. color space of the color of the display screen after the color space adjustment.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the main technical ideas of the present disclosure.
The terms "a," "an," "the" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc. The terms "first" and "second" and the like are used merely as labels, and are not intended to limit the number of their objects.
The disclosure provides a color space adjustment method of a display panel, as shown in fig. 1, the color space adjustment method of the display panel includes:
step S110, inputting display information of a standard image with a first standard color to a display panel, wherein the first standard color is a standard color of a first color space, and the display information of the standard image comprises coordinate parameters of the first standard color in the first color space;
step S120, acquiring coordinate parameters of colors of a display picture in CIE XYZ color space, wherein the display picture is displayed by a display panel in response to display information of a standard image;
step S130, obtaining a first adjustment parameter, wherein the first adjustment parameter can convert the coordinate parameter of a first standard color in a first color space into the coordinate parameter of the color of a display picture in a CIE XYZ color space;
step S140, acquiring coordinate parameters of a second standard color in the CIE XYZ color space, wherein the second standard color is the standard color of the second color space;
step S150, obtaining a second adjustment parameter, wherein the second adjustment parameter can convert the coordinate parameter of the color of the display picture in the CIE XYZ color space into the coordinate parameter of the second standard color in the CIE XYZ color space;
step S160, the first adjustment parameter and the second adjustment parameter are input into the display panel.
In the color space adjustment method of the display panel provided by the disclosure, a first adjustment parameter reflecting the screen characteristic can be obtained, a second adjustment parameter for adjusting the color space of the color of the display picture to a second color space can be obtained, and the first adjustment parameter and the second adjustment parameter are written into the display panel. When the display panel works and receives the display information of the image to be displayed described by adopting the first color space, the display information of the image to be displayed can be corrected directly according to the first adjustment parameter and the second adjustment parameter, and then the display panel displays the display information of the image to be displayed according to the corrected display information, so that the color of the display picture displayed by the display panel accords with the standard of the second color space. In this way, with the aid of the first adjustment parameter and the second adjustment parameter of the present disclosure, the color space of the color of the display screen can be adjusted to the second color space.
According to the color space adjustment method of the display panel, repeated detection and verification of the display pictures corresponding to the standard images of the same first standard color are not needed, the first adjustment parameters and the second adjustment parameters can be obtained only by detecting the display pictures corresponding to the same standard image once, the method is simple and efficient, the color space adjustment efficiency of the display panel can be improved, and the time consumption is reduced.
The color space adjustment method of the display panel according to the embodiment of the present disclosure is described in detail below:
the first color space and the second color space are different and are selected from the sRGB color space, BT709 color space, bt.2020 color space, DCI P3-D65 color space, adobe RGB color space, apple RGB color space, or from other RGB color spaces, respectively.
In step S110, the first standard color may be a solid color in the first color space, and in particular may be a base color in the first color space. For example, red (R), green (G), blue (G), white (W), etc. in the first color space may be used as the first standard color.
The display information of the standard image may include coordinate parameters of the first standard color in the first color space. For example, the standard image may be a red frame (R), and the first color space is an sRGB color space, and the first standard color is a red (R) base color in the sRGB color space; the display information of the standard image includes the coordinate value of red (R) of the sRGB color space or, in other words, the color of the standard image is described using the coordinate value of red (R) of the sRGB color space.
Alternatively, as shown in FIG. 2, a color space adjustment system of a display panel may be provided to enable adjustment of the color space of the display panel 400. The color space adjustment system of the display panel may include a display panel 400 to be adjusted, and a color space adjustment apparatus of the display panel. In one embodiment of the present disclosure, the color space adjustment device of the display panel may include a processor 100, a player 200, and an optical tester 300, where the processor 100 may be communicatively connected to the player 200, the optical tester 300, and the display panel 400, respectively, the player 200 may be communicatively connected to the display panel 400, and a camera of the optical tester 300 may be aligned with the display panel 400.
As such, in step S110, the processor 100 may issue a play instruction to the player 200, and the player 200 may transmit display information of the pre-stored standard image to the display panel 400 in response to the play instruction. After receiving the display information of the standard image, the display panel 400 may display the standard image according to the display information of the standard image, where the displayed picture is the display picture corresponding to the standard image.
It is understood that the display panel 400 may not be able to fully reproduce the standard image due to the difference of the screen characteristics of the display panel 400, i.e., the color of the display screen corresponding to the first standard color may not be consistent with the first standard color. In order to correct the screen characteristics of the display panel 400, first adjustment parameters reflecting the screen characteristics may be acquired in step S120 and step S130.
In step S120, color coordinates and brightness parameters of the color of the display screen in the CIE xyY color space may be obtained first; then, according to the color coordinates and brightness parameters of the color of the display screen in the CIE xyY color space, the X coordinate value, Y coordinate value and Z coordinate value of the color of the display screen in the CIE XYZ color space are calculated.
Wherein, the display screen can be analyzed by the optical tester 300, for example, a camera of the optical tester 300 can be aligned to the central area of the display panel 400, and color coordinates (x, Y) and brightness parameters Y of the color of the central area of the display screen are collected; further, the color coordinates (x, Y) of the color of the center area of the display screen and the luminance parameter Y may be regarded as the color coordinates (x, Y) of the color of the display screen and the luminance parameter Y.
The X-, Y-, and Z-coordinate values of the CIE XYZ color space can be calculated by the following formula:
z=1-x-y, where z is the z value in CIE xyY color space.
Wherein the Y coordinate value of the CIE XYZ color space is equal to the value of the brightness parameter Y in the CIE xyY color space.
In step S130, a first transformation matrix M may be acquired] 3X3 As a first adjustment parameter, a first conversion matrix [ M ]] 3X3 The method meets the following conditions:
wherein,for the coordinate parameters of the colors of the display screen in the CIE XYZ color space, X is the X coordinate value of the CIE XYZ color space, Y is the Y coordinate value of the CIE XYZ color space, and Z is the Z coordinate value of the CIE XYZ color space. />Is a coordinate parameter of the first standard color in the first color space, wherein R is an R (red) coordinate value in the first color space, G is a G (green) coordinate value in the first color space, and B is a B (blue) coordinate value in the first color space.
After obtaining the first transformation matrix M] 3X3 Then, the color of the display screen can be determined according to the display information of the screen to be displayed described by using the first color space.
In step S140, an appropriate color space may be selected as the second color space as needed, and the standard color of the second color space may be acquired as the second standard color. It is understood that the second standard color and the first standard color are corresponding standard colors, for example, may be the same type of base color in the second color space and the first color space, respectively. For example, the first standard color may be the color of a red (R) substrate in a first color space, and the second standard color may be the color of a red (R) substrate in a second color space.
The coordinate parameters of the second standard color in the second color space, the CIE XYZ color space or the CIE xyY color space may be pre-stored or obtained according to a table lookup, so as to determine the coordinate parameters of the second standard color in the CIE XYZ color space. For example, in one embodiment of the present disclosure, coordinate parameters of the second standard color of the second color space, such as X, Y values and luminance parameter Y, in the CIE xyY color space may be written in advance, and then X-, Y-, and Z-coordinate values of the second standard color of the second color space in the CIE XYZ color space may be calculated.
In step 150, a second transformation matrix [ N ] may be obtained] 3X3 As a second adjustment parameter, a second conversion matrix [ N ]] 3X3 The method meets the following conditions:
wherein,coordinate parameters in CIE XYZ color space for the color of the display screen, +.>Is a coordinate parameter of the second standard color in the CIE XYZ color space. X is an X coordinate value of the CIE XYZ color space, Y is a Y coordinate value of the CIE XYZ color space, and Z is a Z coordinate value of the CIE XYZ color space.
In this way,
when the display panel 400 uses the first color space to describe the display information of the picture to be displayed, the display information is displayed by [ N] 3X3 [M] 3X3 After the adjustment, the frame displayed by the display panel 400 can be made to meet the requirement of the second color space.
Optionally, the first adjustment parameters and the second adjustment parameters corresponding to the first standard colors of the plurality of different colors may be obtained, so that the display panel 400 fits the first adjustment parameters of other colors by using the first adjustment parameters corresponding to the plurality of first standard colors, or the display panel 400 fits the second adjustment parameters of other colors by using the second adjustment parameters corresponding to the plurality of first standard colors, thereby further improving the accuracy and the application range of color space adjustment.
For example, in step S110, display information of standard images having a plurality of different first standard colors may be sequentially input to the display panel 400.
In one embodiment of the present disclosure, the selected first standard colors may be R (red), B (blue), G (green), respectively; further, especially when the pixel type of the display panel 400 is WRGB type, the first standard color may also be W (white). Therefore, the second adjustment parameters corresponding to the first standard colors are linear, so that the second adjustment parameters of other colors can be fitted according to the second adjustment parameters corresponding to the first standard colors.
In another embodiment of the present disclosure, the selected first standard colors may be R (red), B (blue), G (green), RG (yellow), GB (cyan), RB (magenta), RGB (white), respectively. Further, especially when the pixel type of the display panel 400 is WRGB type, the first standard color may also be W (white). Therefore, each second adjustment parameter obtained by the color space adjustment method of the display panel comprises the second adjustment parameter which can be linear and a plurality of nonlinear adjustment parameters, so that the second adjustment parameters of other colors can be conveniently fitted according to the second adjustment parameters corresponding to each first standard color, and the fitting precision can be improved by means of more second adjustment parameters.
In step S120, after the display information of the standard image is input to the display panel each time, the color coordinates and the brightness parameters of the color of the display screen corresponding to each first standard color in the CIE xyY color space may be obtained;
and calculating the coordinate parameters of the colors of the display pictures corresponding to the first standard colors in the CIE XyY color space according to the color coordinates and the brightness parameters of the colors of the display pictures in the CIE XyY color space.
In step S130, the first adjustment parameters corresponding to the first standard colors may be obtained, where the first adjustment parameters corresponding to any one of the first standard colors may be capable of converting the coordinate parameters of the first standard colors in the first color space into the coordinate parameters of the colors of the display screen corresponding to the first standard colors in the CIE XYZ color space. For example, if the first standard colors are R (red), B (blue), G (green), and W (white), four different first adjustment parameters are obtained, each corresponding to one first standard color.
In step S140, coordinate parameters of a plurality of second standard colors in CIE XYZ color space may be obtained, and each first standard color corresponds to each second standard color one by one. For example, if the first standard colors are R (red), B (blue), G (green), and W (white), the second standard colors are R (red), B (blue), G (green), and W (white). For another example, if the first standard colors are R (red), B (blue), G (green), RG (yellow), GB (cyan), RB (magenta), RGB (white), and W (white), respectively, then the second standard colors are R (red), B (blue), G (green), RG (yellow), GB (cyan), RB (magenta), RGB (white), and W (white), respectively. Wherein the first standard color of R (red) corresponds to the second standard color of R (red), the first standard color of B (blue) corresponds to the second standard color of B (blue), and so on.
It is understood that the first standard color is a standard color in a first color space and the second standard color is a standard color in a second color space; thus, there may be a difference between the corresponding first standard color and second standard color. For example, a first standard color of R (red) corresponds to a second standard color of R (red), but may not be the same color.
In step S150, second adjustment parameters corresponding to each second standard color may be obtained, where the second adjustment parameter corresponding to any second standard color may be capable of converting the coordinate parameter of the color of the display screen corresponding to the first standard color corresponding to the second standard color in the CIE XYZ color space into the coordinate parameter of the second standard color in the CIE XYZ color space; in other words, the respective second adjustment parameters corresponding to the respective first standard colors can be obtained.
In one embodiment of the present disclosure, when the number of the first standard colors is plural, the fitting relation of the second adjustment parameter may be obtained by fitting. For example, when the first standard colors are R (red), B (blue), G (green), RG (yellow), GB (cyan), RB (magenta), RGB (white), and W (white), respectively, and the second standard colors are R (red), B (blue), G (green), RG (yellow), GB (cyan), RB (magenta), RGB (white), and W (white), respectively, the respective data shown in table 1 can be obtained:
table 1: color space data
Among them, BT709, bt.2020, and DCI P3-D65 are exemplary listed different second color spaces, and in the application of the present disclosure, only the required data of one second color space need be obtained, and no additional data of the second color space need be obtained. The list of three different second color spaces in table 1 is merely illustrative of the standard color data that indicates that each of the second color spaces is fixed and queriable, and does not indicate that a plurality of second color spaces are necessarily obtained in table 1. It is understood that the second color space may also be other color spaces, such as an sRGB color space, an Adobe RGB color space, an Apple RGB color space, etc.
In Table 1, "-" indicates that the data is queriable and constant; the data shown are not listed one by one in this disclosure. "- - -" indicates that the data is present data, and is to be determined as a variable based on actual test data. In table 1, x is an x coordinate value of a corresponding color in the CIE xyY color space, and y is a y coordinate value of a corresponding color in the CIE xyY color space.
After the data shown in table 1 are acquired, the respective coefficients f can be calculated by fitting the following formulas x1 、f x2 、f x3 、f x4 、f x5 、f x6 、f y1 、f y2 、f y3 、f y4 、f y5 、f y6 、f z1 、f z2 、f z3 、f z4 、f z5 And f z6 。
Wherein,coordinate parameters of the second standard color in CIE XYZ color space; x is an x coordinate value of each display screen color in the CIE xyY color space, and y is a y coordinate value of each display screen color in the CIE xyY color space.
In step S160, each first adjustment parameter and each second adjustment parameter may be written into the display panel 400 for the display panel 400 to call.
In an exemplary embodiment, the first color space is DCI P3-D65 color space 500 and the second color space is BT709 color space 600. In fig. 3, 701 is a color space of colors of a display screen without an adjustment of the color space, and the color space 701 basically meets the requirements of the DCI P3-D65 color space, but has a large gap from the BT709 color space. When the color space adjustment method of the display panel provided by the present disclosure is adopted for adjustment, the color space of the color of the display screen is shown as 702 in fig. 4, and the color space 702 basically meets the requirement of BT709 color space.
The present disclosure also provides a color space adjustment apparatus of a display panel, as shown in fig. 2, including a processor 100, a player 200, and an optical tester 300; wherein,
the player 200 is configured to input display information of a standard image with a first standard color to the display panel in response to a play instruction input by the processor 100, where the first standard color is a standard color of the first color space, and the display information of the standard image includes coordinate parameters of the first standard color in the first color space;
the optical tester 300 is used for collecting color information of a display screen, wherein the display screen is displayed by a display panel in response to display information of a standard image;
the processor 100 is connected with the player 200 and the optical tester 300, and is used for sending a playing instruction to the player 200 and receiving color information of a display picture;
the processor 100 is further configured to obtain, according to color information of the display screen, a coordinate parameter of a color of the display screen in a CIE XYZ color space, and obtain a first adjustment parameter, where the first adjustment parameter can convert the coordinate parameter of the first standard color in the first color space into the coordinate parameter of the color of the display screen in the CIE XYZ color space;
the processor 100 is further configured to obtain a coordinate parameter of a second standard color in the CIE XYZ color space, where the second standard color is a standard color of the second color space, and obtain a second adjustment parameter, where the second adjustment parameter is capable of converting the coordinate parameter of the color of the display screen in the CIE XYZ color space into the coordinate parameter of the second standard color in the CIE XYZ color space;
the processor 100 is further configured to output the first adjustment parameter and the second adjustment parameter to the display panel.
Alternatively, the processor 100 may be a computer.
The color space adjusting device of the display panel provided by the disclosure is used for realizing the color space adjusting method of the display panel described by the color space adjusting method of the display panel, so that the color space adjusting device has the same beneficial effects; other details, principles and effects related to the color space adjustment device of the display panel have been described in detail in the embodiments of the color space adjustment method of the display panel, and are not described herein.
The disclosure further provides a color space adjustment system of a display panel, which is used for realizing the color space adjustment device of the display panel described by the color space adjustment method of the display panel. As shown in fig. 2, the color space adjustment system of the display panel includes the display panel and the color space adjustment device of the display panel described in the above-described color space adjustment device embodiment of the display panel. The color space adjustment system of the display panel has the same technical effects, principles and details as those of the color space adjustment device of the display panel, and the disclosure is not repeated here.
Preferably, the display panel and the player 200 are connected by a high-speed data line. For example, the display panel and the player 200 may be connected by HDMI or SDI.
Preferably, the optical tester 300 includes a camera that is aimed at a central region of the display panel.
It should be noted that although the steps of the methods of the present disclosure are illustrated in the accompanying drawings in a particular order, this does not require or imply that the steps must be performed in that particular order or that all of the illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc., all are considered part of the present disclosure.
It is to be understood that the disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the disclosure. The disclosure is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are within the scope of the present disclosure. It should be understood that the present disclosure disclosed and defined herein extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. Embodiments of the present disclosure describe the best mode known for carrying out the disclosure and will enable one skilled in the art to utilize the disclosure.

Claims (8)

1. A color space adjustment method for a display panel, comprising:
inputting display information of a standard image with a first standard color to the display panel, wherein the first standard color is a standard color of a first color space, and the display information of the standard image comprises coordinate parameters of the first standard color in the first color space;
inputting display information of a standard image having a first standard color to the display panel includes: sequentially inputting display information of standard images with different colors of first standard colors to the display panel;
acquiring coordinate parameters of colors of a display picture in CIE XYZ color space, wherein the display picture is displayed by the display panel in response to display information of the standard image;
the method for obtaining the coordinate parameters of the colors of the display picture in the CIE XYZ color space comprises the following steps: after display information of a standard image is input to the display panel each time, color coordinates and brightness parameters of colors of the display pictures corresponding to the first standard colors in a CIE xyY color space are obtained; calculating coordinate parameters of the colors of the display pictures corresponding to the first standard colors in the CIE XyY color space according to the color coordinates and the brightness parameters of the colors of the display pictures in the CIE XyY color space;
acquiring a first adjustment parameter, wherein the first adjustment parameter can convert a coordinate parameter of the first standard color in a first color space into a coordinate parameter of the color of the display picture in a CIE XYZ color space; the obtaining of the first adjustment parameter includes: acquiring first adjustment parameters corresponding to the first standard colors, wherein the first adjustment parameters corresponding to any one of the first standard colors can convert coordinate parameters of the first standard colors in a first color space into coordinate parameters of colors of display pictures corresponding to the first standard colors in a CIE XYZ color space;
acquiring coordinate parameters of a second standard color in a CIE XYZ color space, wherein the second standard color is a standard color of the second color space; the obtaining of the coordinate parameters of the second standard color in the CIE XYZ color space comprises: acquiring coordinate parameters of a plurality of second standard colors in a CIE XYZ color space, wherein each first standard color corresponds to each second standard color one by one;
acquiring a second adjustment parameter, wherein the second adjustment parameter can convert the coordinate parameter of the color of the display picture in the CIE XYZ color space into the coordinate parameter of the second standard color in the CIE XYZ color space; the obtaining of the second adjustment parameter includes: acquiring second adjustment parameters corresponding to the second standard colors, wherein the second adjustment parameters corresponding to any one of the second standard colors can convert coordinate parameters of the colors of the display pictures corresponding to the first standard colors in the CIE XYZ color space into coordinate parameters of the second standard colors in the CIE XYZ color space;
inputting the first adjustment parameter and the second adjustment parameter into the display panel;
inputting the first adjustment parameter and the second adjustment parameter into the display panel includes: inputting first adjustment parameters corresponding to the first standard colors into the display panel;
and inputting second adjustment parameters corresponding to the second standard colors into the display panel.
2. The method of claim 1, wherein obtaining the coordinate parameters of the color of the display in CIE XYZ color space comprises:
acquiring color coordinates and brightness parameters of the color of the display picture in a CIE xyY color space;
and calculating X coordinate values, Y coordinate values and Z coordinate values of the color of the display picture in the CIE XyY color space according to the color coordinates and brightness parameters of the color of the display picture in the CIE XyY color space.
3. The method of claim 2, wherein obtaining color coordinates and brightness parameters of colors of the display in CIE xyY color space comprises:
detecting color coordinates and brightness parameters of colors of a central area of the display picture in a CIE xyY color space;
and determining the color coordinates and the brightness parameters of the color of the display picture in the CIE xyY color space according to the color coordinates and the brightness parameters of the color of the central area of the display picture in the CIE xyY color space.
4. The method of claim 1, wherein obtaining the first adjustment parameter comprises:
obtaining a first transformation matrix [ M ]] 3X3 As a first adjustment parameter, a first conversion matrix [ M ]] 3X3 The method meets the following conditions:
wherein,coordinate parameters of the colors of the display picture in CIE XYZ color space; />Is a coordinate parameter of the first standard color in a first color space.
5. The method of claim 1, wherein obtaining the second adjustment parameter comprises:
obtaining a second conversion matrix [ N ]] 3X3 As a second adjustment parameter, a second conversion matrix [ N ]] 3X3 The method meets the following conditions:
wherein,coordinate parameters of the colors of the display picture in CIE XYZ color space; />Is a coordinate parameter of the second standard color in the CIE XYZ color space.
6. The method of claim 1, wherein the first color space and the second color space are different and are selected from the group consisting of sRGB color space, BT709 color space, bt.2020 color space, DCIP3-D65 color space, adobe RGB color space, apple RGB color space.
7. The color space adjusting device of the display panel is characterized by comprising a processor, a player and an optical tester; wherein,
the player is used for responding to a play instruction input by the processor, inputting display information of a standard image with a first standard color to the display panel, wherein the first standard color is a standard color of a first color space, and the display information of the standard image comprises coordinate parameters of the first standard color in the first color space; inputting display information of a standard image having a first standard color to the display panel includes: sequentially inputting display information of standard images with different colors of first standard colors to the display panel;
the optical tester is used for collecting color information of a display picture, wherein the display picture is displayed by the display panel in response to the display information of the standard image;
the processor is connected with the player and the optical tester and is used for sending the playing instruction to the player and receiving the color information of the display picture;
the processor is further configured to obtain, according to color information of the display screen, a coordinate parameter of a color of the display screen in a CIE XYZ color space, and obtain a first adjustment parameter, where the first adjustment parameter is capable of converting the coordinate parameter of the first standard color in the first color space into a coordinate parameter of the color of the display screen in the CIE XYZ color space; the method for obtaining the coordinate parameters of the color of the display picture in the CIE XYZ color space comprises the following steps: after display information of a standard image is input to the display panel each time, color coordinates and brightness parameters of colors of the display pictures corresponding to the first standard colors in a CIE xyY color space are obtained; calculating coordinate parameters of the colors of the display pictures corresponding to the first standard colors in the CIE XyY color space according to the color coordinates and the brightness parameters of the colors of the display pictures in the CIE XyY color space; the obtaining of the first adjustment parameter includes: acquiring first adjustment parameters corresponding to the first standard colors, wherein the first adjustment parameters corresponding to any one of the first standard colors can convert coordinate parameters of the first standard colors in a first color space into coordinate parameters of colors of display pictures corresponding to the first standard colors in a CIE XYZ color space;
the processor is further configured to obtain a coordinate parameter of a second standard color in a CIE XYZ color space, where the second standard color is a standard color of the second color space, and obtain a second adjustment parameter, where the second adjustment parameter is capable of converting the coordinate parameter of the color of the display screen in the CIE XYZ color space into the coordinate parameter of the second standard color in the CIE XYZ color space; the obtaining of the coordinate parameters of the second standard color in the CIE XYZ color space comprises: acquiring coordinate parameters of a plurality of second standard colors in a CIE XYZ color space, wherein each first standard color corresponds to each second standard color one by one; the obtaining of the second adjustment parameter includes: acquiring second adjustment parameters corresponding to the second standard colors, wherein the second adjustment parameters corresponding to any one of the second standard colors can convert coordinate parameters of the colors of the display pictures corresponding to the first standard colors in the CIE XYZ color space into coordinate parameters of the second standard colors in the CIE XYZ color space;
the processor is further configured to output the first adjustment parameter and the second adjustment parameter to the display panel; outputting the first adjustment parameter and the second adjustment parameter to the display panel includes: inputting first adjustment parameters corresponding to the first standard colors into the display panel; and inputting second adjustment parameters corresponding to the second standard colors into the display panel.
8. A color space adjustment system of a display panel, comprising the display panel and the color space adjustment apparatus of the display panel of claim 7, wherein,
the display panel is connected with the player through a high-speed data line;
the optical tester includes a camera that is aligned with a central region of the display panel.
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