CN113450703A - Display screen compensation method and device, computer readable storage medium and electronic equipment - Google Patents
Display screen compensation method and device, computer readable storage medium and electronic equipment Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The application relates to a display screen compensation method and device, a computer readable storage medium and an electronic device. The display screen compensation method comprises the following steps: acquiring chromatic values of a plurality of visual angles and brightness values under different gray scales of each pixel point on the display screen; acquiring chromatic value compensation values of the multiple visual angles and brightness value compensation values of different gray scales of each pixel point according to the chromatic values of the multiple visual angles and the brightness values of the different gray scales of each pixel point; and circularly adopting the chromatic value compensation value of each visual angle and the brightness value compensation value under the current gray scale in sequence to compensate the chromatic value and the brightness value of each pixel point. The display screen compensation method can compensate the chromaticity of the display screen and the brightness of the display screen under different gray scales from a plurality of visual angles, so that the front view and the side view angles of the display screen have good display effects, and the visual angle of the display screen is improved.
Description
Technical Field
The present application relates to the field of display, and in particular, to a display screen compensation method and apparatus, a computer-readable storage medium, and an electronic device.
Background
In the existing display screen compensation method, a camera is usually used to obtain the brightness values and the chromatic values of different areas or different pixel points on a display screen, and then the compensation values are calculated. However, most of the existing compensation techniques only acquire the brightness and chromaticity of the front view angle of the display screen, and have a good improvement effect on the brightness and chromaticity of the front view angle, however, the brightness and chromaticity of the side view angle are still not uniform, and the viewing effect is not good enough.
Disclosure of Invention
In view of the foregoing disadvantages of the prior art, an object of the present application is to provide a compensation method for a display panel, which aims to solve the problem of non-uniformity of the lateral viewing angle luminance and chromaticity of the existing display panel.
The embodiment of the application provides a display screen compensation method, wherein the display screen comprises a plurality of pixel points, and the display screen compensation method comprises the following steps:
acquiring chromatic values of a plurality of visual angles and brightness values under different gray scales of each pixel point on the display screen;
acquiring chromatic value compensation values of the multiple visual angles and brightness value compensation values of different gray scales of each pixel point according to the chromatic values of the multiple visual angles and the brightness values of the different gray scales of each pixel point; and
and circularly adopting the chromatic value compensation value of each visual angle and the brightness value compensation value under the current gray scale in sequence to compensate the chromatic value and the brightness value of each pixel point.
The display screen compensation method can compensate the chromaticity of the display screen and the brightness of the display screen under different gray scales from a plurality of visual angles, so that the front view and the side view angles of the display screen have good display effects, and the visual angle of the display screen is improved.
Optionally, the acquiring chrominance values of a plurality of viewing angles and luminance values under different gray scales of each pixel point on the display screen specifically includes: and acquiring chromatic values of at least three visual angles of each pixel point on the display screen and brightness values under different gray scales. When the brightness compensation is carried out on the chromaticity and different gray scales at least three angles, the display screen can have a wider visual angle, and the chromaticity and the brightness of the side viewing angle are more uniform.
Optionally, the obtaining, according to the chromatic values of the multiple viewing angles and the luminance values under different gray scales of each pixel point, chromatic value compensation values of the multiple viewing angles and luminance value compensation values under different gray scales of each pixel point specifically includes:
acquiring target chrominance values of the multiple viewing angles of each pixel point and target luminance values under different gray scales;
obtaining chromatic value compensation values of the plurality of visual angles of each pixel point according to the chromatic values of the plurality of visual angles of each pixel point and the target chromatic value; and
and acquiring the brightness value compensation value of each pixel point under the different gray scales of the multiple visual angles according to the brightness value of each pixel point under the different gray scales of the multiple visual angles and the target chromatic value of each pixel point under the different gray scales.
Optionally, the sequentially and cyclically adopting the chromatic value compensation value of each viewing angle and the luminance value compensation value under the current gray scale to compensate the chromatic value and the luminance value of each pixel point, specifically including:
in each scanning period, a chromatic value compensation value of one visual angle and a brightness value compensation value under the current gray scale are output, chromatic values and brightness values of each pixel point are compensated, and the chromatic value compensation values and the brightness value compensation values under the current gray scale of a plurality of visual angles are output in a circulating mode.
Optionally, the luminance value compensation value Δ L of each pixel point under the different gray scales of the multiple viewing angles is calculated by the following formula:
△L＝(α11-1)Rin+(α22-1)Gin+(α33-1)Bin
where Rin is a luminance value of red light, Gin is a luminance value of green light, Bin is a luminance value of blue light, α 11 is a luminance value correction coefficient of red light, α 22 is a luminance value correction coefficient of green light, and α 33 is a luminance value correction coefficient of blue light.
Optionally, the chrominance value compensation values of the multiple viewing angles of each pixel point are calculated by the following formula:
△R＝α12Gin+α13Bin；
△G＝α21Rin+α23Bin；
△B＝α31Rin+α32Gin；
wherein, Δ R is a chromaticity value compensation value of red light, Δ G is a chromaticity value compensation value of green light, Δ B is a chromaticity value compensation value of blue light, a chromaticity value correction coefficient of α 12 green light to red light, a chromaticity value correction coefficient of α 13 blue light to red light, a chromaticity value correction coefficient of α 21 red light to green light, a chromaticity value correction coefficient of α 23 blue light to green light, a chromaticity value correction coefficient of α 31 red light to blue light, a chromaticity value correction coefficient of α 32 green light to blue light, Rin is a luminance value of red light, Gin is a luminance value of green light, and Bin is a luminance value of blue light.
Based on the same inventive concept, the embodiment of the present application further provides a display screen compensation device, where the compensation device includes:
the chrominance and luminance acquisition module is used for acquiring chrominance values of a plurality of viewing angles of each pixel point on the display screen and luminance values under different gray scales;
the compensation value acquisition module is used for acquiring the chromatic value compensation values of the multiple visual angles and the brightness value compensation values under different gray scales of each pixel point according to the chromatic values of the multiple visual angles and the brightness values under different gray scales of each pixel point; and
and the compensation module is used for circularly adopting the chromatic value compensation value of each visual angle and the brightness value compensation value under the current gray scale in sequence to compensate the chromatic value and the brightness value of each pixel point.
The utility model provides a display screen compensation arrangement 200 can compensate the colourity of display screen and the luminance under the different grey scales from a plurality of visual angles for the front view and the side view angle of display screen all have good display effect, have improved the visual angle of display screen.
Optionally, the compensation value obtaining module includes:
the target numerical value acquisition unit is used for acquiring target chrominance values of the multiple visual angles of each pixel point and target luminance values under different gray scales;
the chrominance compensation obtaining unit is used for obtaining chrominance value compensation values of the plurality of visual angles of each pixel point according to the chrominance values of the plurality of visual angles of each pixel point and the target chrominance values; and
and the brightness compensation acquisition unit is used for acquiring the brightness compensation numerical values of each pixel point under different gray scales of the multiple visual angles according to the brightness values of each pixel point under different gray scales of the multiple visual angles and the target chromatic values under different gray scales.
Based on the same inventive concept, embodiments of the present application also provide a computer-readable storage medium storing executable program codes, where the executable program codes are used to make a computer execute the display screen compensation method of the embodiments of the present application.
Based on the same inventive concept, the embodiment of the present application further provides an electronic device, which includes a processor and a memory, where the memory stores program codes executable by the processor, and when the program codes are called and executed by the processor, the display screen compensation method of the embodiment of the present application is executed.
The display screen compensation method comprises the steps of firstly obtaining chromatic values of a plurality of visual angles and brightness values under different gray scales of each pixel point on a display screen; acquiring chromatic value compensation values of the multiple visual angles and brightness value compensation values of different gray scales of each pixel point according to the chromatic values of the multiple visual angles and the brightness values of the different gray scales of each pixel point; and circularly adopting the chromatic value compensation value of each visual angle and the brightness value compensation value under the current gray scale in sequence to compensate the chromatic value and the brightness value of each pixel point. Therefore, the display screen compensation method can compensate the chromaticity of the display screen and the brightness of the display screen under different gray scales from a plurality of visual angles, so that the front view angle and the side view angle of the display screen have good display effects, and the visual angle of the display screen is improved.
Drawings
FIG. 1 is a schematic flowchart illustrating a display screen compensation method according to an embodiment of the present application;
FIG. 2 is a block diagram of a display panel compensation apparatus according to an embodiment of the present application;
fig. 3 is a block diagram of a compensation value obtaining module according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Description of reference numerals:
200-display screen compensation device 235-brightness compensation acquisition unit
210-chrominance and luminance acquisition module 250-compensation module
230-compensation value acquisition module 300-electronic device
231-target value obtaining unit 310-processor
233 chroma compensation retrieving unit 330 memory
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Most of the existing chromaticity and brightness compensation methods only consider chromaticity and brightness compensation of a front viewing angle of a display screen, and chromaticity and brightness of a side viewing angle are not compensated, so that chromaticity and brightness of a side viewing angle of the display screen have serious non-uniformity, and the viewing effect of the side viewing angle is seriously influenced.
Based on this, the present application intends to provide a solution to the above technical problem, the details of which will be explained in the following embodiments.
Referring to fig. 1, an embodiment of the present application provides a display screen compensation method, where the display screen includes a plurality of pixel points, and the display screen compensation method includes:
s101, obtaining chromatic values of a plurality of visual angles and brightness values under different gray scales of each pixel point on the display screen;
specifically, the chromatic values of at least three viewing angles of each pixel point on the display screen and the brightness values under different gray scales are obtained. For example, three viewing angles, four viewing angles, five viewing angles, six viewing angles, etc. may be used, and the more viewing angles that are acquired, the better the uniformity of the side-view luminance and chromaticity of the display screen.
In some embodiments, when three viewing angles are selected for compensation, the angles of the three viewing angles may be-45 °, 0 ° and 45 °, or-60 °, 0 ° and 60 °, respectively, or other angles.
The viewing angle of the present application refers to an angle with the front viewing direction of the display screen, unless otherwise specified.
Color is commonly represented by lightness and chroma, which are properties of a color excluding lightness that reflects the hue and saturation of the color.
A chroma value, i.e. a color value, refers to a color value corresponding to a color in a different color mode. For example, the corresponding value of red in the RGB color mode is 255, 0, 0; the corresponding values of green in the RGB color mode are 0, 255, 0; the corresponding values for blue in the RGB color mode are 0, 0, 255.
The gray level represents the gradation level of different brightness from the darkest to the lightest, and the brightness change between the lightest and the darkest is divided into a plurality of parts. The gray scales from darkest to brightest can be divided into 256 gray scales, particularly 0-255 gray scales, and the finer the hierarchy division in the middle of the gray scales is, the finer the displayed picture effect is.
The brightness value, also called gray value, is different from the brightness value of each point of the scene, so that each point on the photographed black-and-white photograph or black-and-white image reproduced by the television receiver is gray in different degrees. The logarithmic relationship between white and black is divided into several levels, called "gray scale".
Generally, the same pixel point on the display screen has different brightness values under different gray scales.
S102, obtaining chromatic value compensation values of the multiple visual angles and brightness value compensation values of different gray scales of each pixel point according to chromatic values of the multiple visual angles and brightness values of different gray scales of each pixel point; and
optionally, the obtaining, according to the chromatic values of the multiple viewing angles and the luminance values under different gray scales of each pixel point, chromatic value compensation values of the multiple viewing angles and luminance value compensation values under different gray scales of each pixel point specifically includes:
s1021, acquiring target chromaticity values of the multiple visual angles of each pixel point and target brightness values under different gray scales;
specifically, the target chrominance values of the multiple viewing angles and the target luminance values of the different gray scales of each pixel point are obtained according to the chrominance values of the multiple viewing angles and the luminance values of the different gray scales of each pixel point.
S1022, obtaining chromatic value compensation values of the multiple visual angles of each pixel point according to the chromatic values of the multiple visual angles of each pixel point and the target chromatic values; and
specifically, the difference between the target chromaticity values and the chromaticity values of the multiple viewing angles of each pixel point is calculated to obtain the chromaticity value compensation values of the multiple viewing angles of each pixel point.
Optionally, in some embodiments, the chrominance value compensation values of the multiple viewing angles of each pixel point are calculated by the following formula:
△R＝α12Gin+α13Bin；
△G＝α21Rin+α23Bin；
△B＝α31Rin+α32Gin；
wherein, Δ R is a chromaticity value compensation value of red light, Δ G is a chromaticity value compensation value of green light, Δ B is a chromaticity value compensation value of blue light, a chromaticity value correction coefficient of α 12 green light to red light, a chromaticity value correction coefficient of α 13 blue light to red light, a chromaticity value correction coefficient of α 21 red light to green light, a chromaticity value correction coefficient of α 23 blue light to green light, a chromaticity value correction coefficient of α 31 red light to blue light, a chromaticity value correction coefficient of α 32 green light to blue light, Rin is a luminance value of red light, Gin is a luminance value of green light, and Bin is a luminance value of blue light.
And S1023, acquiring the brightness value compensation value of each pixel point under different gray scales of the multiple visual angles according to the brightness value of each pixel point under different gray scales of the multiple visual angles and the target chromatic value under different gray scales.
Specifically, the difference between the target brightness value of each pixel point under different gray scales at the multiple viewing angles and the brightness value of each pixel point under different gray scales is calculated to obtain the brightness value compensation value of each pixel point under different gray scales at the multiple viewing angles.
Optionally, in some embodiments, the luminance value compensation value Δ L at different gray scales of the plurality of viewing angles for each pixel point is calculated by the following formula:
△L＝(α11-1)Rin+(α22-1)Gin+(α33-1)Bin
where Rin is a luminance value of red light, Gin is a luminance value of green light, Bin is a luminance value of blue light, α 11 is a luminance value correction coefficient of red light, α 22 is a luminance value correction coefficient of green light, and α 33 is a luminance value correction coefficient of blue light.
And S103, circularly adopting the chromatic value compensation value of each visual angle and the brightness value compensation value under the current gray scale in sequence to compensate the chromatic value and the brightness value of each pixel point.
Specifically, in each scanning period, a chromatic value compensation value of one viewing angle and a brightness value compensation value under the current gray scale are output, chromatic values and brightness values of each pixel point are compensated, and the chromatic value compensation values and the brightness value compensation values under the current gray scale of a plurality of viewing angles are circularly output.
The refresh frequency of the display screen is usually between 60HZ and 120HZ, so the display time (each scanning period) of each frame is less than 16.67ms, and the switching of different compensation data is performed in this time period, so that the human eye cannot recognize the difference of each frame, and the result of the combination of multiple sets of compensation data is observed. That is, when the chrominance compensation data of a plurality of viewing angles and the luminance compensation data under the current gray scale are cyclically switched, the human eyes see that the result of the chrominance and luminance compensation is obtained from the plurality of viewing angles, so that the chrominance and luminance compensation of the plurality of viewing angles is realized.
In one embodiment, chrominance compensation data and luminance compensation data at different gray scales are obtained for-60 ° viewing angle, 0 ° viewing angle and 60 ° viewing angle of each pixel of the display screen, respectively. When compensation is carried out, the first frame outputs chrominance compensation data of a-60-degree visual angle and luminance compensation data under different gray scales, the second frame outputs chrominance compensation data of a 0-degree visual angle and luminance compensation data under different gray scales, the third frame outputs chrominance compensation data of a 60-degree visual angle and luminance compensation data … … under different gray scales, the output is carried out in a circulating mode, the display time of each frame is 16.67ms, the total display time of the three frames is 50ms, human eyes cannot recognize small changes in the short time, and therefore the optimal picture after compensation of different visual angles is seen visually at the same time.
In another embodiment, the first frame may output the chrominance compensation data of the 0 ° viewing angle and the luminance compensation data under different gray scales, the second frame may output the chrominance compensation data of the 60 ° viewing angle and the luminance compensation data under different gray scales, and the third frame may output the chrominance compensation data of the-60 ° viewing angle and the luminance compensation data under different gray scales. The compensation data of a plurality of viewing angles can be circularly output according to a preset sequence, and the output sequence of the compensation data of different viewing angles is not particularly limited in the present application.
In other embodiments, a set of speed compensation data and luminance compensation data at different gray scales may be output every two frames, for example, the first frame and the second frame output chrominance compensation data at a viewing angle of-60 ° and luminance compensation data at different gray scales, the third frame and the fourth frame output chrominance compensation data at a viewing angle of 0 ° and luminance compensation data at different gray scales, and the fifth frame and the sixth frame output chrominance compensation data at a viewing angle of 60 ° and luminance compensation data … … at different gray scales, which are output in a loop. As long as the total time of the compensation data output for all viewing angles is less than the viewing angle period that can be recognized by the human eye.
The display screen compensation method comprises the steps of firstly obtaining chromatic values of a plurality of visual angles and brightness values under different gray scales of each pixel point on a display screen; acquiring chromatic value compensation values of the multiple visual angles and brightness value compensation values of different gray scales of each pixel point according to the chromatic values of the multiple visual angles and the brightness values of the different gray scales of each pixel point; and circularly adopting the chromatic value compensation value of each visual angle and the brightness value compensation value under the current gray scale in sequence to compensate the chromatic value and the brightness value of each pixel point. Therefore, the display screen compensation method can compensate the chromaticity of the display screen and the brightness of the display screen under different gray scales from a plurality of visual angles, so that the front view angle and the side view angle of the display screen have good display effects, and the visual angle of the display screen is improved.
Referring to fig. 2, the present application further provides a display screen compensation apparatus 200, where the compensation apparatus 200 includes: a chrominance and luminance obtaining module 210, a compensation value obtaining module 230, and a compensation module 250.
A chrominance and luminance obtaining module 210, configured to obtain chrominance values of multiple viewing angles and luminance values under different gray scales of each pixel point on the display screen;
specifically, the chromatic values of at least three viewing angles of each pixel point on the display screen and the brightness values under different gray scales are obtained. For example, three viewing angles, four viewing angles, five viewing angles, six viewing angles, etc. may be used, and the more viewing angles that are acquired, the better the uniformity of the side-view luminance and chromaticity of the display screen.
In some embodiments, when three viewing angles are selected for compensation, the angles of the three viewing angles may be-45 °, 0 ° and 45 °, or-60 °, 0 ° and 60 °, respectively, or other angles.
A compensation value obtaining module 230, configured to obtain, according to the chrominance values of the multiple viewing angles and the luminance values under different gray scales of each pixel point, chrominance value compensation values of the multiple viewing angles and luminance value compensation values under different gray scales of each pixel point; and
optionally, referring to fig. 3, in some embodiments, the compensation value obtaining module 230 includes:
a target value obtaining unit 231, configured to obtain target chrominance values of the multiple viewing angles and target luminance values under different gray scales for each pixel point;
specifically, the target value obtaining unit 231 is configured to obtain target chrominance values of the multiple viewing angles and target luminance values of different gray scales of each pixel according to the chrominance values of the multiple viewing angles and the luminance values of different gray scales of each pixel.
A chrominance compensation obtaining unit 233, configured to obtain chrominance value compensation values of the multiple viewing angles of each pixel point according to the chrominance values of the multiple viewing angles of each pixel point and the target chrominance values; and
optionally, the chrominance compensation obtaining unit 233 is configured to calculate a difference between a target chrominance value and a chrominance value of the multiple viewing angles of each pixel point, so as to obtain a chrominance value compensation value of the multiple viewing angles of each pixel point.
Optionally, in some embodiments, the chrominance compensation obtaining unit 233 is configured to obtain chrominance compensation values of the plurality of viewing angles for each pixel point according to the following formula:
△R＝α12Gin+α13Bin；
△G＝α21Rin+α23Bin；
△B＝α31Rin+α32Gin；
wherein, Δ R is a chromaticity value compensation value of red light, Δ G is a chromaticity value compensation value of green light, Δ B is a chromaticity value compensation value of blue light, a chromaticity value correction coefficient of α 12 green light to red light, a chromaticity value correction coefficient of α 13 blue light to red light, a chromaticity value correction coefficient of α 21 red light to green light, a chromaticity value correction coefficient of α 23 blue light to green light, a chromaticity value correction coefficient of α 31 red light to blue light, a chromaticity value correction coefficient of α 32 green light to blue light, Rin is a luminance value of red light, Gin is a luminance value of green light, and Bin is a luminance value of blue light.
And a brightness compensation obtaining unit 235, configured to obtain, according to the brightness values of the multiple pixels at different viewing angles and different gray scales and the target chromatic values of the different gray scales, brightness compensation values of the multiple pixels at different viewing angles and different gray scales.
Specifically, the luminance compensation obtaining unit 235 is configured to calculate a difference between a target luminance value of each pixel point at the multiple viewing angles and different gray scales and a luminance value of each pixel point at the multiple viewing angles and different gray scales, so as to obtain a luminance value compensation value of each pixel point at the multiple viewing angles and different gray scales.
Optionally, in some embodiments, the luminance compensation obtaining unit 235 is configured to obtain the luminance compensation value Δ L at different gray scales of the plurality of viewing angles for each pixel according to the following formula:
△L＝(α11-1)Rin+(α22-1)Gin+(α33-1)Bin
where Rin is a luminance value of red light, Gin is a luminance value of green light, Bin is a luminance value of blue light, α 11 is a luminance value correction coefficient of red light, α 22 is a luminance value correction coefficient of green light, and α 33 is a luminance value correction coefficient of blue light.
And the compensation module 250 is configured to cyclically adopt the chromatic value compensation value of each viewing angle and the luminance value compensation value under the current gray scale in sequence to compensate the chromatic value and the luminance value of each pixel point.
Specifically, the compensation module 250 outputs a chrominance value compensation value of one viewing angle and a luminance value compensation value under the current gray scale in each scanning period, compensates the chrominance value and the luminance value of each pixel point, and cyclically outputs the chrominance value compensation values and the luminance value compensation values under the current gray scale of a plurality of viewing angles.
For a detailed description of the present embodiment, please refer to the description of the display screen compensation method, which is not repeated herein.
The display screen compensation device 200 of the present application adopts a chrominance and luminance obtaining module 210 to obtain chrominance values of a plurality of viewing angles of each pixel point on the display screen and luminance values under different gray scales; acquiring chromaticity compensation values of the multiple viewing angles and brightness compensation values of different gray scales of each pixel point by using a chromaticity and brightness acquisition module 210 according to the chromaticity values of the multiple viewing angles and the brightness values of different gray scales of each pixel point; and the compensation module 250 is adopted to circularly adopt the chromatic value compensation value of each visual angle and the brightness value compensation value under the current gray scale in sequence to compensate the chromatic value and the brightness value of each pixel point. Therefore, the display screen compensation device 200 of the application can compensate the chromaticity of the display screen and the brightness under different gray scales from a plurality of visual angles, so that the front view and the side view angles of the display screen have good display effects, and the visual angle of the display screen is improved.
The display screen compensation method and device of the present application can be applied to an Organic Light Emitting Diode (OLED) display screen, a Quantum Dot Light Emitting Diode (QLED) display screen, a Micro Light Emitting Diode (Micro LED) display screen, a submillimeter Light Emitting Diode (Mini-LED) display screen, and the like, and are not limited herein.
Embodiments of the present application also provide a computer-readable storage medium, which stores executable program codes, and the computer-readable storage medium is used for causing a computer to execute the display screen compensation method of the embodiments of the present application.
Referring to fig. 4, an electronic device 300 according to an embodiment of the present application is further provided, which includes a processor 310 and a memory 330, where the memory 330 stores a program code executable by the processor 310, and when the program code is called and executed by the processor 310, the display screen compensation method according to an embodiment of the present application is performed.
The electronic device 300 has the advantages that by the aid of the compensation method, the brightness values of the spliced display screen under the chromatic values and different gray scales are close to each other, chromatic values and brightness values do not need to be compensated again, the compensation process is simplified, production efficiency is improved, and cost of the display screen is saved.
The memory 330, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the display screen compensation method in the embodiments of the present invention. The processor 310 executes various functional applications of the server and data processing by executing the nonvolatile software programs, instructions and modules stored in the memory 330, that is, implements the display screen compensation method of the above-described method embodiment.
May include Random Access Memory (RAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact disk Read-Only Memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Furthermore, the method is simple. Any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, the fiber optic cable, the twisted pair, the DSL, or the wireless technologies such as infrared, radio, and microwave are included in the fixation of the medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy Disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The electronic device 300 of the present invention includes, but is not limited to, a computer, a notebook computer, a tablet computer, a mobile phone, a camera, a smart band, a smart watch, smart glasses, and other electronic devices with a display screen.
It should be understood that the application of the present application is not limited to the above examples, and that modifications or changes may be made by those skilled in the art based on the above description, and all such modifications and changes are intended to fall within the scope of the appended claims.
Claims (10)
1. A display screen compensation method, wherein the display screen comprises a plurality of pixel points, the display screen compensation method comprising:
acquiring chromatic values of a plurality of visual angles and brightness values under different gray scales of each pixel point on the display screen;
acquiring chromatic value compensation values of the multiple visual angles and brightness value compensation values of different gray scales of each pixel point according to the chromatic values of the multiple visual angles and the brightness values of the different gray scales of each pixel point; and
and circularly adopting the chromatic value compensation value of each visual angle and the brightness value compensation value under the current gray scale in sequence to compensate the chromatic value and the brightness value of each pixel point.
2. The method for compensating a display screen of claim 1, wherein the obtaining of the chrominance values of the plurality of viewing angles and the luminance values under different gray scales of each pixel point on the display screen specifically comprises: and acquiring chromatic values of at least three visual angles of each pixel point on the display screen and brightness values under different gray scales.
3. The display screen compensation method of claim 1, wherein the obtaining of the chrominance value compensation values and the luminance value compensation values at different gray scales of the multiple viewing angles of each pixel point according to the chrominance values and the luminance values at different gray scales of the multiple viewing angles of each pixel point specifically comprises:
acquiring target chrominance values of the multiple viewing angles of each pixel point and target luminance values under different gray scales;
obtaining chromatic value compensation values of the plurality of visual angles of each pixel point according to the chromatic values of the plurality of visual angles of each pixel point and the target chromatic value; and
and acquiring the brightness value compensation value of each pixel point under the different gray scales of the multiple visual angles according to the brightness value of each pixel point under the different gray scales of the multiple visual angles and the target chromatic value of each pixel point under the different gray scales.
4. The display screen compensation method of claim 1, wherein the circularly using the chrominance value compensation value of each viewing angle and the luminance value compensation value under the current gray scale in sequence to compensate the chrominance value and the luminance value of each pixel point, specifically comprises:
in each scanning period, a chromatic value compensation value of one visual angle and a brightness value compensation value under the current gray scale are output, chromatic values and brightness values of each pixel point are compensated, and the chromatic value compensation values and the brightness value compensation values under the current gray scale of a plurality of visual angles are output in a circulating mode.
5. The display screen compensation method of claim 1, wherein the compensation value Δ L of the luminance values at the different gray scales of the plurality of viewing angles for each pixel point is calculated by the following formula:
△L＝(α11-1)Rin+(α22-1)Gin+(α33-1)Bin
where Rin is a luminance value of red light, Gin is a luminance value of green light, Bin is a luminance value of blue light, α 11 is a luminance value correction coefficient of red light, α 22 is a luminance value correction coefficient of green light, and α 33 is a luminance value correction coefficient of blue light.
6. The display screen compensation method of any one of claims 1-5, wherein the chrominance value compensation values for the plurality of viewing angles for each pixel point are calculated by the following formula:
△R＝α12Gin+α13Bin；
△G＝α21Rin+α23Bin；
△B＝α31Rin+α32Gin；
wherein, Δ R is a chromaticity value compensation value of red light, Δ G is a chromaticity value compensation value of green light, Δ B is a chromaticity value compensation value of blue light, a chromaticity value correction coefficient of α 12 green light to red light, a chromaticity value correction coefficient of α 13 blue light to red light, a chromaticity value correction coefficient of α 21 red light to green light, a chromaticity value correction coefficient of α 23 blue light to green light, a chromaticity value correction coefficient of α 31 red light to blue light, a chromaticity value correction coefficient of α 32 green light to blue light, Rin is a luminance value of red light, Gin is a luminance value of green light, and Bin is a luminance value of blue light.
7. A display screen compensation apparatus, the compensation apparatus comprising:
the chrominance and luminance acquisition module is used for acquiring chrominance values of a plurality of viewing angles of each pixel point on the display screen and luminance values under different gray scales;
the compensation value acquisition module is used for acquiring the chromatic value compensation values of the multiple visual angles and the brightness value compensation values under different gray scales of each pixel point according to the chromatic values of the multiple visual angles and the brightness values under different gray scales of each pixel point; and
and the compensation module is used for circularly adopting the chromatic value compensation value of each visual angle and the brightness value compensation value under the current gray scale in sequence to compensate the chromatic value and the brightness value of each pixel point.
8. The display screen compensation apparatus of claim 7, wherein the compensation value obtaining module comprises:
the target numerical value acquisition unit is used for acquiring target chrominance values of the multiple visual angles of each pixel point and target luminance values under different gray scales;
the chrominance compensation obtaining unit is used for obtaining chrominance value compensation values of the plurality of visual angles of each pixel point according to the chrominance values of the plurality of visual angles of each pixel point and the target chrominance values; and
and the brightness compensation acquisition unit is used for acquiring the brightness compensation numerical values of each pixel point under different gray scales of the multiple visual angles according to the brightness values of each pixel point under different gray scales of the multiple visual angles and the target chromatic values under different gray scales.
9. A computer-readable storage medium having stored thereon executable program code for causing a computer to perform the compensation method of any one of claims 1-6.
10. An electronic device comprising a processor and a memory, the memory storing program code executable by the processor, the program code when invoked and executed by the processor performing the compensation method of any of claims 1-6.
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