CN108877630B - Method and device for acquiring Mura compensation data, computer equipment and storage medium - Google Patents
Method and device for acquiring Mura compensation data, computer equipment and storage medium Download PDFInfo
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Abstract
The invention relates to a method, a device, computer equipment and a storage medium for acquiring Mura compensation data, wherein the brightness data of a detection picture displayed by a display panel is acquired under a preset gray scale, and the detection picture comprises a mixed color gray scale picture; determining the brightness data of three primary colors according to the brightness coefficient of each single primary color corresponding to the mixed color and the brightness data; and determining compensation data corresponding to the display panel according to the brightness data of the three primary colors. The tricolor brightness data are obtained by shooting the mixed color gray scale picture, so that the shooting time of the CCD camera is shortened, the time cost is reduced, and the technical problem of low efficiency in obtaining Mura compensation data is solved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a method and an apparatus for obtaining Mura compensation data, a computer device, and a storage medium.
Background
With the rapid development of video display technology, large-size ultrahigh-resolution and ultra-narrow frame display technology becomes the focus of key competition of panel factories, however, as the size increases, the difficulty of process control of display panels increases, and the Mura is generated due to the deterioration of picture uniformity caused by manufacturing process control deviation. Among them, Mura refers to a display non-uniformity phenomenon of a display panel, which is generated due to factors such as process level and raw material purity, and is a common technical problem in the field of display technology.
At present, each manufacturer uses a CCD camera to shoot a detection picture displayed by a display panel, and under a plurality of gray scales, the CCD camera respectively shoots three primary colors pictures displayed by the display panel to collect corresponding three primary color brightness data, and determines Mura compensation data corresponding to the display panel according to the brightness data corresponding to the three primary colors respectively to improve the Mura phenomenon.
In the conventional technology, since it takes a lot of shooting time to respectively shoot three primary color pictures displayed by the display panel through the CCD camera, there is a technical problem of low efficiency in obtaining Mura compensation data.
Disclosure of Invention
Accordingly, it is necessary to provide a method, an apparatus, a computer device, and a storage medium for acquiring Mura compensation data, aiming at the technical problem of low efficiency in acquiring Mura compensation data in the conventional technology.
A method of obtaining Mura compensation data, comprising: acquiring brightness data of a detection picture displayed by a display panel under a preset gray scale, wherein the detection picture comprises a mixed color gray scale picture; determining brightness data of three primary colors according to preset brightness coefficients of the single primary colors corresponding to the mixed colors and the brightness data; and determining compensation data corresponding to the display panel according to the brightness data of the three primary colors.
In one embodiment, the mixed color is generated by mixing at least two single primary colors; the generation mode of the preset brightness coefficient of each single primary color corresponding to the mixed color comprises the following steps: under the preset gray scale, respectively displaying a single primary color gray scale picture in the at least two single primary colors through a plurality of display panels, and acquiring brightness data of the at least two single primary color gray scale pictures; under the preset gray scale, respectively displaying the mixed color gray scale picture through a plurality of display panels to obtain the brightness data of the mixed color gray scale picture; and determining the brightness coefficient of each single primary color according to the brightness data of the at least two single primary color gray scale pictures and the brightness data of the mixed color gray scale picture.
In one embodiment, the determining the luminance coefficient of each single primary color according to the luminance data of the at least two single primary color grayscale pictures and the luminance data of the mixed color grayscale picture includes: respectively calculating the brightness ratio A of the at least two single primary colors according to the following formula: a ═ LvXn/LvYn; calculating the average value of the brightness ratio A of at least two single primary colors, and determining the average value as a corresponding single primary color brightness coefficient; wherein LvXn is the luminance data of a single primary color grayscale picture of the at least two single primary colors displayed by the nth display panel, and LvYn is the luminance data of the mixed color grayscale picture displayed by the nth display panel.
In one embodiment, before the calculating the average value of the luminance ratios a of the at least two single primary colors, the method further includes: determining the brightness ratio A of at least two single primary colors which accord with the screening condition according to the preset screening condition; the calculating the average value of the brightness ratio A of at least two single primary colors, and respectively determining the brightness ratio A as the brightness coefficient of each single primary color comprises the following steps: and calculating the average value of the brightness ratio A of at least two single primary colors meeting the screening condition, and respectively determining the average value as the corresponding single primary color brightness coefficients.
In one embodiment, the luminance data of the three primary colors is determined according to the following formula: LvX ═ K × LvY; wherein, K is a luminance coefficient of one of the at least two primary colors corresponding to the mixed color, LvX is luminance data of one of the at least two primary colors corresponding to the mixed color, and LvY is luminance data of the mixed color grayscale picture.
In one embodiment, the three primary colors include a first single primary color, a second single primary color, and a third single primary color; a first mixed color gray scale picture is generated by mixing the first single primary color and the second single primary color; the acquiring of the brightness data of the detection picture displayed by the display panel includes: acquiring brightness data of the first mixed color gray scale picture displayed by the display panel; acquiring brightness data of a third single primary color gray scale picture displayed by the display panel; the determining the brightness data of the three primary colors according to the preset brightness coefficient of each single primary color corresponding to the mixed color and the brightness data comprises the following steps: determining first single primary color brightness data according to the brightness coefficient K1 of the first single primary color and the brightness data of the first mixed color gray scale picture; determining second single primary color brightness data according to the brightness coefficient K2 of the second single primary color and the brightness data of the first mixed color gray scale picture; and determining the brightness data of the third single primary color gray scale picture as third single primary color brightness data.
In one embodiment, the mixed color comprises a first single primary color, a second single primary color and a third single primary color, and a second mixed color gray scale picture is generated by mixing the first single primary color, the second single primary color and the third single primary color; the acquiring of the brightness data of the detection picture displayed by the display panel includes: acquiring brightness data of the second mixed color gray scale picture displayed by the display panel; the determining the brightness data of the three primary colors according to the preset brightness coefficient of each single primary color corresponding to the mixed color and the brightness data comprises the following steps: determining first single primary color brightness data according to the brightness coefficient K3 of the first single primary color and the brightness data of the second mixed color gray scale picture; determining second single primary color brightness data according to the brightness coefficient K4 of the second single primary color and the brightness data of the second mixed color gray scale picture; and determining the brightness data of the third single primary color according to the brightness coefficient K5 of the third single primary color and the brightness data of the second mixed color gray scale picture.
An apparatus for obtaining Mura compensation data, the apparatus comprising: the device comprises a brightness data acquisition module, a brightness data acquisition module and a brightness data acquisition module, wherein the brightness data acquisition module is used for acquiring the brightness data of a detection picture displayed by a display panel under a preset gray scale, and the detection picture comprises a mixed color gray scale picture; the brightness data determining module is used for determining the brightness data of the three primary colors according to the preset brightness coefficient of each single primary color corresponding to the mixed color and the brightness data; and the compensation data determining module is used for determining the compensation data corresponding to the display panel according to the brightness data of the three primary colors.
A computer device comprising a memory storing a computer program and a processor implementing the steps of the method of any of the above embodiments when the processor executes the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any of the preceding embodiments.
According to the method, the device, the computer equipment and the storage medium for acquiring the Mura compensation data, the brightness data of the detection picture displayed by the display panel is acquired under the preset gray scale, and the detection picture comprises a mixed color gray scale picture; determining the brightness data of three primary colors according to the brightness coefficient of each single primary color corresponding to the mixed color and the brightness data; and determining compensation data corresponding to the display panel according to the brightness data of the three primary colors. The tricolor brightness data are obtained by shooting the mixed color gray scale picture, so that the shooting time of the CCD camera is shortened, the time cost is reduced, and the technical problem of low efficiency in obtaining Mura compensation data is solved.
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FIG. 1a is a schematic diagram illustrating an application scenario for obtaining Mura compensation data according to an embodiment;
FIG. 1b is a schematic flow chart illustrating the acquisition of Mura compensation data according to an embodiment;
fig. 2a to 2c are schematic flow charts illustrating a method for generating a preset luminance coefficient for each single primary color corresponding to a mixed color in one embodiment;
FIG. 3 is a flowchart illustrating the step S230 according to one embodiment;
FIG. 4 is a flowchart illustrating a step S320 according to an embodiment;
FIG. 5 is a flow diagram illustrating the process of determining three primary color luminance data in one embodiment;
FIG. 6 is a flow diagram illustrating the process of determining three primary color luminance data in one embodiment;
FIG. 7 is a block diagram of an apparatus for obtaining Mura compensation data according to one embodiment;
FIG. 8 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
The acquisition process of the Mura compensation data will be explained with reference to fig. 1 a. The system comprises an image acquisition device 120 and a data processing device 130. The image capture device 120 may be a CCD camera. Wherein, a connection is established between the data processing device 120 and the image acquisition device 130. The image acquisition device 120 acquires an image of the detection picture displayed by the display panel 110 and extracts corresponding luminance data, then the image acquisition device 120 sends the luminance data of the retrieved picture to the data processing device 130, and the data processing device 130 processes the luminance data of the detection picture displayed by the display panel 110 to obtain compensation data corresponding to the detection picture. The obtained compensation data is burned into the flash memory of the display panel 140 to be compensated.
In an embodiment, referring to fig. 1b, the present application provides a method for obtaining Mura compensation data, which is exemplified by applying the method to the data processing apparatus 130 in fig. 1a, and the method includes the following steps:
s110, under the preset gray scale, acquiring the brightness data of a detection picture displayed by the display panel, wherein the detection picture comprises a mixed color gray scale picture.
The display panel may be, but is not limited to, a plasma display panel, a liquid crystal display panel (LCD), a light emitting diode display panel (LED), or an organic light emitting diode display panel (OLED), the display panel is provided with pixels arranged in an array, and one pixel is composed of three sub-pixels of red R, green G, and blue B. The light source of each sub-pixel may exhibit a different brightness level, which may be represented in gray scale. The gray levels represent gradation levels of different brightness from the darkest to the brightest. Each pixel in the display panel is displayed based on display data of three primary colors of RGB, which may be luminance data of the pixel. The display panel can display mixed color gray scale pictures and can also display pure color gray scale pictures. The mixed color gray scale picture refers to a gray scale picture displayed by mixing at least two single primary colors of RGB three primary colors. The mixed color gray scale picture can be a red-blue mixed color gray scale picture, a red-green mixed color gray scale picture, a green-blue mixed color gray scale picture or a red-green-blue mixed color gray scale picture. The pure color gray scale picture refers to a gray scale picture displayed by any one of the three primary colors of RGB, and the pure color gray scale picture can be a red gray scale picture, a green gray scale picture or a blue gray scale picture.
Specifically, under a preset gray scale, the display panel displays a detection picture, and the detection picture is photographed through the image acquisition device to obtain an image of the detection picture. And extracts corresponding luminance data for each pixel of the detection picture image. The image acquisition device sends the extracted brightness data to the data processing device, namely the data processing device acquires the brightness data of the detection picture. For example, the detection frame may only include a mixed color gray scale frame, and the luminance data of the detection frame is the luminance data corresponding to the mixed color gray scale frame. The detection picture can also comprise a mixed color gray scale picture and a single primary color gray scale picture, and the brightness data of the detection picture is the brightness data corresponding to the mixed color gray scale picture and the brightness data corresponding to the single primary color gray scale picture.
And S120, determining the brightness data of the three primary colors according to the preset brightness coefficient and the preset brightness data of each single primary color corresponding to the mixed color.
The mixed color is generated by mixing at least two single primary colors of RGB three primary colors, and each single primary color for generating the mixed color is preset with a corresponding brightness coefficient. Specifically, the brightness data of the three primary colors are determined according to the preset brightness coefficient of each primary color corresponding to the mixed color and the brightness data of the detected picture. For example, if the mixed color is generated by mixing red and green, the luminance data of the detected picture includes luminance data of a red-green mixed color gray scale picture and luminance data of a blue gray scale picture. The red corresponding to the mixed color is preset with a red brightness coefficient, and the green corresponding to the mixed color is also preset with a green brightness coefficient. The brightness data of the red gray scale picture can be determined according to the red brightness coefficient and the brightness data of the red-green mixed color gray scale picture, and the brightness data of the green gray scale picture can be determined according to the green brightness coefficient and the brightness data of the red-green mixed color gray scale picture. Namely, the brightness data of the red gray scale picture, the brightness data of the green gray scale picture and the brightness data of the blue gray scale picture are respectively determined.
And S130, determining compensation data corresponding to the display panel according to the brightness data of the three primary colors.
Ideally, the determined luminance data of the red gray scale picture, the determined luminance data of the green gray scale picture and the determined luminance data of the blue gray scale picture should be consistent with the luminance data at the preset gray scale. Mura is generated due to uneven pictures caused by process level, raw material purity and the like, and the brightness data of RGB three primary colors of pixels of actually detected pictures have deviation. For example, the preset gray level is 60, and the R-primary gray level, the G-primary gray level and the B-primary gray level corresponding to the actual detection picture are greater than or less than 60. And determining compensation data corresponding to the display panel according to the brightness data of the red gray scale picture, the brightness data of the green gray scale picture and the brightness data of the blue gray scale picture, so that the picture displayed by the display panel can reach target brightness data corresponding to a preset gray scale.
In the embodiment, the shooting time of the CCD camera is shortened, the time cost is reduced, and the technical problem of low efficiency in obtaining Mura compensation data is solved by shooting the mixed color gray scale picture and obtaining the brightness data of three primary colors according to the brightness coefficients of the single primary colors corresponding to the mixed color.
In one embodiment, the secondary color is generated by mixing at least two primary colors. Referring to fig. 2a, the generation method of the preset luminance coefficient of each single primary color corresponding to the mixed color includes the following steps:
s210, under a preset gray scale, respectively displaying a single primary color gray scale picture in at least two single primary colors through a plurality of display panels, and acquiring brightness data of the single primary color gray scale picture.
S220, under the preset gray scale, the mixed color gray scale picture is respectively displayed through the display panels, and the brightness data of the mixed color gray scale picture is obtained.
S230, determining the brightness coefficient of each single primary color according to the brightness data of at least two single primary color gray scale pictures and the brightness data of the mixed color gray scale picture.
Wherein the mixed color is generated by mixing at least two single primary colors. The mixed color may be generated by mixing any two of the R, G, and B primaries. The mixed color can be generated by mixing the R primary color, the G primary color, and the B primary color.
For example, referring to fig. 2B, when a mixed color is generated by mixing two single primary colors, the R primary color and the B primary color are mixed as an example for explanation. The number of the plurality of display panels is N. Under the preset gray scale, firstly, the N display panels all display an R-primary color gray scale picture, and the brightness data of the N display panels under the R-primary color gray scale picture is measured; secondly, under the same preset gray scale, the N display panels all display a B-primary color gray scale picture, and the brightness data of the N display panels under the B-primary color gray scale picture are measured; and finally, under the same preset gray scale, the N display panels all display RB mixed color gray scale pictures, and the brightness data of the N display panels under the RB mixed color gray scale pictures are measured.
And determining the R-primary color brightness coefficient according to the brightness data of the R-primary color gray scale picture of the N display panels and the brightness data of the RB mixed color gray scale picture. And determining the brightness coefficient of the B primary color according to the brightness data of the B primary color gray scale picture of the N display panels and the brightness data of the RB mixed color gray scale picture.
For example, referring to fig. 2c, when the mixed color is generated by mixing the R primary color, the G primary color, and the B primary color, the number of the plurality of display panels is N. Under the preset gray scale, firstly, the N display panels all display an R-primary color gray scale picture, and the brightness data of the N display panels under the R-primary color gray scale picture is measured. Secondly, the N display panels all display the B-primary color gray scale picture, and the brightness data of the N display panels under the B-primary color gray scale picture is measured. Then, the N display panels all display G primary color gray scale pictures, and the brightness data of the N display panels under the G primary color gray scale pictures are measured. And finally, under the same preset gray scale, the N display panels respectively display RGB mixed color gray scale pictures, and the brightness data of the N display panels under the RGB mixed color gray scale pictures are measured.
The R primary color brightness coefficient can be determined according to the brightness data of the R primary color gray scale picture and the brightness data of the RGB mixed color gray scale picture of the N display panels. And determining the brightness coefficient of the B primary color according to the brightness data of the B primary color gray scale picture and the brightness data of the RGB mixed color gray scale picture of the N display panels. And determining the G primary color brightness coefficient according to the brightness data of the G primary color gray scale picture and the brightness data of the RGB mixed color gray scale picture of the N display panels.
In one embodiment, referring to fig. 3, determining the luminance coefficient of each primary color according to the luminance data of at least two primary color gray scale pictures and the luminance data of the mixed color gray scale picture includes:
s310, respectively calculating the brightness ratio A of at least two single primary colors according to the following formula:
A＝LvXn/LvYn。
s320, calculating the average value of the brightness ratio A of at least two single primary colors, and determining the average value as the corresponding single primary color brightness coefficient.
Wherein LvXn is the luminance data of one single primary color gray scale picture of at least two single primary colors displayed by the nth display panel, and LvYn is the luminance data of a mixed color gray scale picture displayed by the nth display panel.
For example, referring to fig. 2B, when a mixed color is generated by mixing two single primary colors, the R primary color and the B primary color are mixed as an example for explanation. The number of the plurality of display panels is N. Under a preset gray scale, the 1 st display panel to the Nth display panel respectively display an R-primary color gray scale picture, and then the brightness data under the R-primary color gray scale picture is measured, namely the brightness data of the 1 st display panel to the Nth display panel are respectively recorded as: LvR1, LvR2 … LvRn. The 1 st display panel to the nth display panel respectively display a B-primary color gray scale picture, and then the luminance data under the B-primary color gray scale picture, that is, the luminance data of the 1 st display panel to the nth display panel, are respectively recorded as: LvB1, LvB2 … LvBn. Under the same preset gray scale, the 1 st display panel to the nth display panel respectively display an RB mixed color gray scale picture, and then luminance data under the RB mixed color gray scale picture, that is, luminance data of the 1 st display panel to the nth display panel, are respectively recorded as: LvRB1, LvRB2 … LvRBn.
The brightness ratios A of the R primary colors of the N display panels are respectively as follows: LvR1/LvRB1, LvR2/LvRB 2. Then the average value of the luminance ratios of the R primaries is calculated according to the luminance ratios a of the R primaries of the N display panels, and the average value is determined as the luminance coefficient of the R primary.
The brightness ratios of the B primary colors of the N display panels are respectively as follows: LvB1/LvRB1, LvB2/LvRB 2. Then the average value of the luminance ratios of the B primary colors is calculated according to the luminance ratios of the B primary colors of the N display panels, and the average value is determined as the luminance coefficient of the B primary color.
For example, referring to fig. 2c, when the mixed color is generated by mixing the R primary color, the G primary color, and the B primary color. The number of the plurality of display panels is N. Under a preset gray scale, the 1 st display panel to the Nth display panel respectively display an R-primary color gray scale picture, and then the brightness data under the R-primary color gray scale picture is measured, namely the brightness data of the 1 st display panel to the Nth display panel are respectively recorded as: LvR1, LvR2 … LvRn. The 1 st display panel to the nth display panel respectively display a B-primary color gray scale picture, and then the luminance data under the B-primary color gray scale picture, that is, the luminance data of the 1 st display panel to the nth display panel, are respectively recorded as: LvB1, LvB2 … LvBn. The 1 st display panel to the nth display panel respectively display a G-primary color gray scale picture, and then measure luminance data under the G-primary color gray scale picture, that is, luminance data of the 1 st display panel to the nth display panel are respectively recorded as: LvG1, LvG2 … LvGn.
Respectively displaying RGB mixed color gray scale pictures on the 1 st display panel to the Nth display panel under the same preset gray scale, then measuring the brightness data under the RGB mixed color gray scale pictures, and respectively recording the brightness data of the 1 st display panel to the Nth display panel as: LvRGB1, LvRGB2 … LvRGBn.
The brightness ratios A of the R primary colors of the N display panels are respectively as follows: LvR1/LvRGB1, LvR2/LvRGB 2. And calculating the average value of the brightness proportion A of the R primary colors, and determining the average value as the brightness coefficient of the R primary colors.
The brightness ratios of the primary colors of the N display panels G are respectively as follows: LvG1/LvRGB1, LvG2/LvRGB 2. And calculating the average value of the brightness ratio A of the G primary colors, and determining the average value as the brightness coefficient of the G primary colors.
The brightness ratios of the B primary colors of the N display panels are respectively as follows: LvB1/LvRGB1, LvB2/LvRGB 2. And calculating the average value of the brightness ratio A of the B primary color, and determining the average value as the brightness coefficient of the B primary color.
In one embodiment, referring to fig. 4, before calculating the average value of the luminance ratios a of at least two single primary colors, the method further includes:
s410, determining the brightness ratio A of at least two single primary colors meeting the screening condition according to the preset screening condition;
calculating the average value of the brightness ratio A of at least two single primary colors, and respectively determining the average value as the brightness coefficient of each single primary color, wherein the average value comprises the following steps:
s420, calculating the average value of the brightness ratio A of at least two single primary colors meeting the screening condition, and respectively determining the average value as the corresponding single primary color brightness coefficients.
Wherein, the screening condition means that the absolute value difference from the average value of the brightness ratio A does not exceed a preset value. The preset value may be 5% or 10%. The preset value can be set according to actual conditions.
For example, referring to fig. 2B, when a mixed color is generated by mixing two single primary colors, the R primary color and the B primary color are mixed as an example for explanation. And eliminating the brightness ratio A which does not meet the screening condition from the brightness ratios LvRn/LvRBn of the N R single primary colors, screening the brightness ratios A of the R single primary colors which meet the screening condition, calculating the average value of the brightness ratios A of the R primary colors obtained by screening, and determining the average value as the brightness coefficient of the R primary color.
And eliminating the brightness ratio A which does not meet the screening condition from the brightness ratios LvBn/LvRBn of the N B single primary colors, screening the brightness ratios A of the B single primary colors which meet the screening condition, calculating the average value of the brightness ratios A of the B primary colors obtained by screening, and determining the average value as the brightness coefficient of the B primary color.
For example, referring to fig. 2c, when the mixed color is generated by mixing the R primary color, the G primary color, and the B primary color. And removing the brightness proportion A which does not meet the screening condition from the brightness proportion LvRn/LvRGbn of the N R single primary colors, screening the brightness proportion A of the R single primary colors which meet the condition, calculating the average value of the brightness proportion A of the R primary colors obtained by screening, and determining the average value as the brightness coefficient of the R primary color.
And removing the brightness ratio A which does not meet the screening condition from the brightness ratios LvGn/LvRGbn of the N G single primary colors, screening the brightness ratios A of the G single primary colors which meet the condition, calculating the average value of the brightness ratios A of the G primary colors obtained by screening, and determining the average value as the brightness coefficient of the G primary color.
And removing the brightness ratio A which does not meet the screening condition from the brightness ratios LvBn/LvRGBN of the N B single primary colors, screening the brightness ratios A of the B single primary colors which meet the screening condition, calculating the average value of the brightness ratios A of the B primary colors obtained by screening, and determining the average value as the brightness coefficient of the B primary color.
In this embodiment, before obtaining the Mura compensation data, by measuring the luminance coefficients of the individual primary colors, when obtaining the Mura compensation data, the luminance data of the mixed color grayscale picture displayed by the display panel may determine the luminance data of the three primary colors according to the luminance data of the mixed color grayscale picture and the luminance coefficients of the individual primary colors corresponding to the mixed color. The brightness data of each single primary color is obtained without shooting each single primary color gray scale picture, so that the shooting time is reduced, and the efficiency of obtaining Mura compensation data is improved.
In one embodiment, the luminance data of the three primary colors is determined according to the following formula: LvX ═ K × LvY. Wherein, K is a luminance coefficient of one of the at least two primary colors corresponding to the mixed color, LvX is luminance data of one of the at least two primary colors corresponding to the mixed color, and LvY is luminance data of the mixed color grayscale picture.
The detection picture displayed by the display panel comprises a mixed color gray scale picture, and the data processing device acquires the brightness data corresponding to the mixed color gray scale picture and can calculate according to the brightness coefficient of each single primary color and the brightness data corresponding to the mixed color gray scale picture so as to determine the brightness data of each single primary color gray scale picture. Specifically, the luminance data corresponding to the mixed color grayscale image is represented as LvY, and the luminance coefficient of each single primary color is represented as K, so that the luminance data LvX of each single primary color grayscale image is equal to the product of the luminance data corresponding to the mixed color grayscale image and the luminance coefficient of each single primary color.
In one embodiment, the three primary colors include a first single primary color, a second single primary color, and a third single primary color. Referring to fig. 5, acquiring the brightness data of the detection frame displayed by the display panel includes the following steps:
s510, luminance data of the first mixed color gray scale picture displayed by the display panel is obtained.
S520, acquiring the brightness data of the third single primary color gray scale picture displayed by the display panel.
With reference to fig. 5, determining the luminance data of three primary colors according to the preset luminance coefficients and luminance data of the single primary colors corresponding to the mixed color includes:
s530, determining first single primary color brightness data according to the brightness coefficient K1 of the first single primary color and the brightness data of the first mixed color gray scale picture.
S540, determining second single primary color brightness data according to the brightness coefficient K2 of the second single primary color and the brightness data of the first mixed color gray scale picture.
And S550, determining the brightness data of the third single primary color gray scale picture as third single primary color brightness data.
The first mixed color gray scale picture is generated by mixing the first single primary color and the second single primary color. Firstly, a detection picture displayed by the display panel is a first mixed color gray scale picture, and the brightness data of the first mixed color gray scale picture can be acquired through the image acquisition device. And secondly, the detection picture displayed by the display panel is a third single primary color gray scale picture, and the brightness data of the third single primary color gray scale picture can be acquired through the image acquisition device.
The luminance coefficient K1 of the first single primary color and the luminance coefficient K2 of the second single primary color corresponding to the first mixed color have been measured in advance before the acquisition of the Mura data is started. And the brightness data of each single primary color gray scale picture is equal to the product of the brightness data corresponding to the mixed color gray scale picture and the brightness coefficient of each single primary color, the first single primary color brightness data is equal to the product of the brightness coefficient K1 of the first single primary color and the brightness data of the first mixed color gray scale picture, and the second single primary color brightness data is equal to the product of the brightness coefficient K2 of the second single primary color and the brightness data of the first mixed color gray scale picture. And finally, determining the brightness data of the third single primary color gray scale picture as the brightness data of the third single primary color, thereby determining the brightness data of the three primary colors.
In this embodiment, the display panel sequentially displays the first mixed color grayscale image and the third single primary color grayscale image according to the first mixed color grayscale image generated by mixing the first single primary color and the second single primary color, and respectively obtains the corresponding luminance data. And determining the brightness data of the three primary colors according to the brightness coefficient K1 of the first single primary color, the brightness coefficient K2 of the second single primary color and the acquired brightness data respectively, so that one third of shooting time can be reduced, and the efficiency of acquiring Mura compensation data is improved.
In one embodiment, the secondary colors include a first primary color, a second primary color, and a third primary color. Referring to fig. 6, acquiring the brightness data of the detection frame displayed by the display panel includes the following steps:
s610, acquiring brightness data of a second mixed color gray scale picture displayed by the display panel;
determining the brightness data of three primary colors according to the preset brightness coefficient and the brightness data of each single primary color corresponding to the mixed color, wherein the brightness data comprises the following steps:
s620, determining first single primary color brightness data according to the brightness coefficient K3 of the first single primary color and the brightness data of the second mixed color gray scale picture;
s630, determining second single primary color brightness data according to the brightness coefficient K4 of the second single primary color and the brightness data of the second mixed color gray scale picture;
and S640, determining the brightness data of the third single primary color according to the brightness coefficient K5 of the third single primary color and the brightness data of the second mixed color gray scale picture.
The second mixed color gray scale picture is generated by mixing the first single primary color, the second single primary color and the third single primary color. The detection picture displayed by the display panel is a second mixed color gray scale picture, and the brightness data of the second mixed color gray scale picture is acquired through the image acquisition device.
The luminance coefficient K3 of the first single primary color, the luminance coefficient K4 of the second single primary color, and the luminance coefficient K5 of the third single primary color corresponding to the second mixed color have been measured in advance before the acquisition of the Mura data is started. And the brightness data of each single primary color gray scale picture is equal to the product of the brightness data corresponding to the mixed color gray scale picture and the brightness coefficient of each single primary color, the first single primary color brightness data is equal to the product of the brightness coefficient K3 of the first single primary color and the brightness data of the second mixed color gray scale picture, the second single primary color brightness data is equal to the product of the brightness coefficient K4 of the second single primary color and the brightness data of the second mixed color gray scale picture, and the third single primary color brightness data is equal to the product of the brightness coefficient K5 of the third single primary color and the brightness data of the second mixed color gray scale picture. Thereby determining the luminance data of the three primary colors.
In this embodiment, the display panel displays the second mixed color grayscale picture generated by mixing the first single primary color, the second single primary color and the third single primary color, and acquires the luminance data of the second mixed color grayscale picture. The brightness data of the three primary colors are respectively determined according to the brightness coefficient K3 of the first single primary color, the brightness coefficient K4 of the second single primary color, the brightness coefficient K5 of the third single primary color and the brightness data of the second mixed color gray scale picture, so that two thirds of shooting time can be reduced, and the efficiency of obtaining Mura compensation data is improved.
It should be understood that although the various steps in the flow charts of fig. 1-6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-6 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 7, there is provided an apparatus for acquiring Mura compensation data, including: a luminance data acquisition module 710, a luminance data determination module 720, and a compensation data determination module 730, wherein:
the luminance data obtaining module 710 is configured to obtain luminance data of a detection picture displayed by the display panel under a preset gray scale, where the detection picture includes a mixed color gray scale picture.
And a luminance data determining module 720, configured to determine luminance data of three primary colors according to the preset luminance coefficients of the single primary colors corresponding to the mixed color and the luminance data.
And the compensation data determining module 730 is configured to determine compensation data corresponding to the display panel according to the luminance data of the three primary colors.
For specific limitations of the apparatus for acquiring Mura compensation data, reference may be made to the above limitations of the method for acquiring Mura compensation data, which are not described herein again. The modules in the apparatus for obtaining Mura compensation data may be implemented in whole or in part by software, hardware, or a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 8. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of obtaining Mura compensation data. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 8 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In an embodiment, a computer device is provided, comprising a memory in which a computer program is stored and a processor, which when executing the computer program performs the method steps in the above embodiments.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the method steps of the above-mentioned embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of obtaining Mura compensation data, comprising:
acquiring brightness data of a detection picture displayed by a display panel under a preset gray scale, wherein the detection picture comprises a mixed color gray scale picture, the mixed color is generated by mixing at least two single primary colors of RGB three primary colors, and each single primary color for generating the mixed color is preset with a corresponding brightness coefficient;
determining brightness data of three primary colors according to preset brightness coefficients of the single primary colors corresponding to the mixed colors and the brightness data;
and determining compensation data corresponding to the display panel according to the brightness data of the three primary colors.
2. The method of claim 1, wherein the secondary color is generated by mixing at least two primary colors; the generation mode of the preset brightness coefficient of each single primary color corresponding to the mixed color comprises the following steps:
under the preset gray scale, respectively displaying a single primary color gray scale picture in the at least two single primary colors through a plurality of display panels, and acquiring brightness data of the at least two single primary color gray scale pictures;
under the preset gray scale, respectively displaying the mixed color gray scale picture through a plurality of display panels to obtain the brightness data of the mixed color gray scale picture;
and determining the brightness coefficient of each single primary color according to the brightness data of the at least two single primary color gray scale pictures and the brightness data of the mixed color gray scale picture.
3. The method of claim 2, wherein determining the luminance coefficient of each primary color according to the luminance data of the at least two primary color grayscale pictures and the luminance data of the mixed color grayscale picture comprises:
respectively calculating the brightness ratio A of the at least two single primary colors according to the following formula:
A＝LvXn/LvYn；
calculating the average value of the brightness ratio A of at least two single primary colors, and determining the average value as a corresponding single primary color brightness coefficient;
wherein LvXn is the luminance data of a single primary color grayscale picture of the at least two single primary colors displayed by the nth display panel, and LvYn is the luminance data of the mixed color grayscale picture displayed by the nth display panel.
4. The method according to claim 3, further comprising, before said calculating an average of luminance ratios A of said at least two single primary colors:
determining the brightness ratio A of at least two single primary colors which accord with the screening condition according to the preset screening condition;
the calculating the average value of the brightness ratio A of at least two single primary colors, and respectively determining the brightness ratio A as the brightness coefficient of each single primary color comprises the following steps:
and calculating the average value of the brightness ratio A of at least two single primary colors meeting the screening condition, and respectively determining the average value as the corresponding single primary color brightness coefficients.
5. The method according to any of claims 1 to 4, wherein the luminance data of the three primary colors is determined according to the following formula: LvX ═ K × LvY;
wherein, K is a luminance coefficient of one of the at least two primary colors corresponding to the mixed color, LvX is luminance data of one of the at least two primary colors corresponding to the mixed color, and LvY is luminance data of the mixed color grayscale picture.
6. The method of claim 5, wherein the three primary colors comprise a first single primary color, a second single primary color, and a third single primary color; a first mixed color gray scale picture is generated by mixing the first single primary color and the second single primary color;
the acquiring of the brightness data of the detection picture displayed by the display panel includes:
acquiring brightness data of the first mixed color gray scale picture displayed by the display panel;
acquiring brightness data of a third single primary color gray scale picture displayed by the display panel;
the determining the brightness data of the three primary colors according to the preset brightness coefficient of each single primary color corresponding to the mixed color and the brightness data comprises the following steps:
determining first single primary color brightness data according to the brightness coefficient K1 of the first single primary color and the brightness data of the first mixed color gray scale picture;
determining second single primary color brightness data according to the brightness coefficient K2 of the second single primary color and the brightness data of the first mixed color gray scale picture;
and determining the brightness data of the third single primary color gray scale picture as third single primary color brightness data.
7. The method of claim 5, wherein said secondary color comprises a first primary color, a second primary color, and a third primary color, and wherein a second secondary color grayscale picture is produced by blending said first primary color, said second primary color, and said third primary color;
the acquiring of the brightness data of the detection picture displayed by the display panel includes:
acquiring brightness data of the second mixed color gray scale picture displayed by the display panel;
the determining the brightness data of the three primary colors according to the preset brightness coefficient of each single primary color corresponding to the mixed color and the brightness data comprises the following steps:
determining first single primary color brightness data according to the brightness coefficient K3 of the first single primary color and the brightness data of the second mixed color gray scale picture;
determining second single primary color brightness data according to the brightness coefficient K4 of the second single primary color and the brightness data of the second mixed color gray scale picture;
and determining the brightness data of the third single primary color according to the brightness coefficient K5 of the third single primary color and the brightness data of the second mixed color gray scale picture.
8. An apparatus for obtaining Mura compensation data, the apparatus comprising:
the system comprises a brightness data acquisition module, a brightness data acquisition module and a brightness data acquisition module, wherein the brightness data acquisition module is used for acquiring the brightness data of a detection picture displayed by a display panel under a preset gray scale, the detection picture comprises a mixed color gray scale picture, the mixed color is generated by mixing at least two single primary colors of RGB three primary colors, and each single primary color for generating the mixed color is preset with a corresponding brightness coefficient;
the brightness data determining module is used for determining the brightness data of the three primary colors according to the preset brightness coefficient of each single primary color corresponding to the mixed color and the brightness data;
and the compensation data determining module is used for determining the compensation data corresponding to the display panel according to the brightness data of the three primary colors.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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| CN110136649A (en) * | 2019-05-15 | 2019-08-16 | 霸州市云谷电子科技有限公司 | Mura compensation method, device, computer equipment and the storage medium of display panel |
| CN110148375B (en) * | 2019-06-28 | 2022-07-19 | 云谷（固安）科技有限公司 | Mura compensation method and device of display panel |
| CN110599981B (en) * | 2019-08-15 | 2021-01-29 | 昆山国显光电有限公司 | Screen brightness compensation system and method and electronic equipment |
| CN113112952B (en) * | 2019-12-24 | 2022-06-17 | 西安诺瓦星云科技股份有限公司 | Display screen color temperature adjusting method, device and system and computer readable storage medium |
| CN111583863B (en) * | 2020-05-25 | 2021-08-27 | 昆山国显光电有限公司 | Mura compensation method and device and display panel |
| CN114495816B (en) * | 2020-10-26 | 2023-06-27 | 深圳Tcl数字技术有限公司 | Display image adjustment method, terminal device and computer readable storage medium |
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