CN114267279B - Compensation gray level determining method, device and equipment - Google Patents
Compensation gray level determining method, device and equipment Download PDFInfo
- Publication number
- CN114267279B CN114267279B CN202111576271.8A CN202111576271A CN114267279B CN 114267279 B CN114267279 B CN 114267279B CN 202111576271 A CN202111576271 A CN 202111576271A CN 114267279 B CN114267279 B CN 114267279B
- Authority
- CN
- China
- Prior art keywords
- value
- sub
- brightness
- gray scale
- scale value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 238000004590 computer program Methods 0.000 claims description 8
- 239000003086 colorant Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 11
- 241001270131 Agaricus moelleri Species 0.000 description 15
- 238000010586 diagram Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Controls And Circuits For Display Device (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The application provides a compensation gray level determining method, device and equipment. The method comprises the following steps: displaying a calibration picture in a test area of the display panel, wherein the test area comprises a first subarea and a second subarea, the calibration picture comprises a first picture and a second picture, the gray scale value of the first picture is a first gray scale value, the gray scale value of the second picture is a second gray scale value, the first subarea displays the first picture, and the second subarea displays the second picture; collecting first brightness of the first subarea and second brightness of the second subarea; determining a calibration gamma value corresponding to the first gray scale value according to the first brightness and the second brightness; and determining a compensation gray scale value of the sub-pixel of the display panel under the first gray scale value according to the calibration gamma value. According to the embodiment of the application, the problem of poor compensation effect of the display panel can be solved.
Description
Technical Field
The application relates to the technical field of display, in particular to a compensation gray scale determining method, device and equipment.
Background
The display panel may have Mura phenomenon during the display process, which affects the display effect of the display panel. To avoid the Mura phenomenon, demura compensation may be performed on the display panel.
In the process of carrying out Demura compensation on the display panel, brightness data of the display panel can be acquired by adopting brightness acquisition equipment, however, due to the fact that consistency and stability of the brightness acquisition equipment are problematic, the brightness data acquired by the brightness acquisition equipment are not accurate enough, and further the problem that the compensation effect of the display panel is poor still exists after Demura compensation is carried out according to the brightness data acquired by the brightness acquisition equipment is caused.
Disclosure of Invention
The embodiment of the application provides a compensation gray level determining method, device and equipment, which can solve the problem of poor compensation effect of a display panel.
In a first aspect, an embodiment of the present application provides a method for determining a compensation gray scale, including: displaying a calibration picture in a test area of the display panel, wherein the test area comprises a first subarea and a second subarea, the calibration picture comprises a first picture and a second picture, the gray scale value of the first picture is a first gray scale value, the gray scale value of the second picture is a second gray scale value, the first subarea displays the first picture, and the second subarea displays the second picture; collecting first brightness of the first subarea and second brightness of the second subarea; determining a calibration gamma value corresponding to the first gray scale value according to the first brightness and the second brightness; and determining a compensation gray scale value of the sub-pixel of the display panel under the first gray scale value according to the calibration gamma value.
In a possible implementation manner of the first aspect, the number of the first sub-zone and the second sub-zone is a plurality, and the plurality of the first sub-zone and the plurality of the second sub-zone are alternately distributed in the intersecting first direction and second direction.
In a possible implementation manner of the first aspect, the first sub-area and the second sub-area are rectangular areas, and the lengths of the first sub-area and the second sub-area in the first direction are equal, and the widths of the first sub-area and the second sub-area in the second direction are equal.
In a possible implementation manner of the first aspect, the number of the first sub-region and the second sub-region is multiple, and before determining the calibration gamma value according to the first brightness and the second brightness, the method further includes:
calculating a first luminance average value of the plurality of first subareas and a second luminance average value of the plurality of second subareas;
according to the first brightness and the second brightness, determining a calibration gamma value corresponding to the first gray scale value comprises the following steps:
And determining a calibration gamma value corresponding to the first gray scale value according to the first brightness average value and the second brightness average value.
In a possible implementation manner of the first aspect, determining the calibration gamma value corresponding to the first gray-scale value according to the first luminance average value and the second luminance average value includes:
Determining a calibration gamma value according to the following expression:
Wherein Gamma ratio represents a calibration Gamma value, N1 represents a first gray level value, N2 represents a second gray level value, L n1 represents a first luminance average value, and L n2 represents a second luminance average value.
In a possible implementation manner of the first aspect, determining the compensation gray scale value of the sub-pixel of the display panel at the first gray scale value according to the calibration gamma value includes:
Determining a compensation gray scale value according to the following expression:
Wherein N x represents a compensation gray-scale value, N1 represents a first gray-scale value, L aver represents a target brightness value corresponding to the first gray-scale value, L 1 represents an acquisition brightness value of a sub-pixel of the display panel under the first gray-scale value, and Gamma ratio represents a calibration Gamma value.
In a possible implementation manner of the first aspect, before determining the compensation gray scale value at the first gray scale value of the sub-pixel of the display panel according to the calibration gamma value, the method further includes:
Determining an acquisition brightness value of the sub-pixels in the second sub-region at the first gray scale value according to the following expression:
Wherein L 1 represents the collected luminance value of the sub-pixel in the second sub-region at the first gray level, L 2 represents the collected luminance value of the sub-pixel in the second sub-region at the second gray level, N1 represents the first gray level, N2 represents the first gray level, and Gamma ratio represents the calibration Gamma.
In a possible implementation manner of the first aspect, before the displaying the calibration screen in the test area of the display panel, the method further includes:
Collecting brightness data of sub-pixels in at least part of a display area of a display panel under a first picture;
Determining a brightness difference range according to brightness data of the sub-pixels in at least part of the display area under the first picture;
And determining a second gray scale value according to the brightness difference range, so that the first ratio is greater than or equal to the maximum value of the brightness difference range, wherein the first ratio is the ratio of the first difference value to the brightness average value of at least part of the display area, and the first difference value is the difference between the brightness value corresponding to the second gray scale value on a preset gamma curve and the brightness average value of at least part of the display area.
In a possible implementation manner of the first aspect, the display panel includes a plurality of color sub-pixels, the first frame includes a first frame corresponding to each color sub-pixel, the second grayscale frame includes a second frame corresponding to each color sub-pixel, and determining the calibration gamma value according to the first brightness and the second brightness includes:
And determining the calibration gamma values corresponding to the sub-pixels of each color respectively according to the first brightness and the second brightness.
In a second aspect, an embodiment of the present application further provides a compensation gray scale determining apparatus, where the apparatus includes:
The display enabling module is used for displaying a calibration picture in a test area of the display panel, the test area comprises a first subarea and a second subarea which are alternately distributed, the calibration picture comprises a first picture and a second picture, the gray scale value of the first picture is a first gray scale value, the gray scale value of the second picture is a second gray scale value, the first subarea displays the first picture, and the second subarea displays the second picture;
The brightness acquisition module is used for acquiring the first brightness of the first subarea and the second brightness of the second subarea;
the calibration gamma determining module is used for determining a calibration gamma value corresponding to the first gray scale value according to the first brightness and the second brightness;
the compensation gray level determining module is used for determining a compensation gray level value of the sub-pixel of the display panel under the first gray level value according to the calibration gamma value.
In a third aspect, an embodiment of the present application provides a compensation gray scale determining apparatus, including: the electronic device comprises a processor, a memory and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implement the steps of the compensation gray level determination method as in the first aspect.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the compensation gray scale determination method as in the first aspect.
According to the embodiment of the application, the compensation value is not limited to be determined by using the preset known gamma value, but the calibration gamma value represented by the collected brightness data is determined according to the collected actual brightness information, and the compensation gray scale value is further determined according to the calibration gamma value. Specifically, a calibration picture is displayed in a test area, the test area is divided into a first subarea and a second subarea which are alternately distributed, the first subarea displays a first picture with a gray level value being the first gray level value, the second subarea displays a second picture with a gray level value being the second gray level value, and the brightness change of the first subarea and the second subarea can represent the change relation of brightness along with gray level due to different gray level pictures displayed by the first subarea and the second subarea, namely, the calibration gamma value represented by the collected brightness data can be determined according to the brightness of the first subarea and the second subarea. The compensation value of the sub-pixel under the first gray level value is determined based on the acquired brightness value and gamma value of the sub-pixel under the first gray level value, and the compensation gray level value is determined by utilizing the calibration gamma value reflected by the acquired brightness data instead of directly determining the compensation gray level value by using the preset known gamma value, so that the problem of poor compensation effect of the display panel can be reduced or compensated due to the instability and poor consistency of the brightness acquisition equipment.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar features, and in which the figures are not to scale.
FIG. 1 is a schematic diagram showing luminance curves of sub-pixels of each color in a pixel unit of a certain row of a display panel according to an embodiment of the present application;
FIG. 2 is a flow chart illustrating a method for determining a compensation gray level according to an embodiment of the present application;
FIG. 3 shows a schematic display of a test zone provided in accordance with one embodiment of the present application;
FIG. 4 is a schematic diagram showing a test area provided in accordance with another embodiment of the present application;
FIG. 5 is a flowchart illustrating a compensation gray scale determining method according to another embodiment of the present application;
FIG. 6 is a flowchart illustrating a compensation gray scale determining method according to another embodiment of the present application;
fig. 7 is a schematic structural diagram of a compensation gray scale determining device according to an embodiment of the present application;
fig. 8 is a schematic diagram showing a configuration of a compensation gray-scale determining apparatus according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the application and are not configured to limit the application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Before describing the technical solution provided by the embodiments of the present application, in order to facilitate understanding of the embodiments of the present application, the present application firstly specifically describes the problems existing in the prior art:
Demura the compensation requires the brightness of the display panel to be acquired by a brightness acquisition device, and then a compensation gray scale value is determined according to the acquired brightness. However, if the consistency and stability of the brightness acquisition device are not good enough, the brightness difference acquired by the brightness acquisition device and the actual brightness difference of the sub-pixels of the display panel will deviate, which may result in poor compensation effect.
Illustratively, taking the example that the display panel includes red, green, and blue sub-pixels, referring to fig. 1, the abscissa in fig. 1 represents the column position of the sub-pixels, and the abscissa represents the ratio of the collected luminance of a sub-pixel at a certain column position to the average value of the collected luminance of the sub-pixels of the row. Because of inaccuracy of the luminance data collected by the luminance collecting device, as shown in fig. 1, the luminance data of the red sub-pixel, the green sub-pixel and the blue sub-pixel at some column positions collected by the luminance collecting device have a larger difference from the average value of the collected luminance of the sub-pixel at the row, and in fact, the luminance data of the red sub-pixel, the green sub-pixel and the blue sub-pixel at the same row are relatively gentle, so that the problem of larger luminance difference at some positions shown in fig. 1 should not exist. For example, the actual maximum brightness difference of the sub-pixels is 8%, and the maximum brightness difference of the sub-pixels collected by the brightness collecting device may be 9%, 10% or more due to the instability and poor consistency of the brightness collecting device, so that the gamma value represented by the brightness data collected by the brightness collecting device may not be consistent with the preset known gamma (gamma) value.
In the process of carrying out Demura compensation on the display panel, the compensation gray scale is usually determined by utilizing the preset known gamma value and the brightness data acquired by the brightness acquisition device, however, the compensated display effect is still not ideal due to the fact that the gamma value reflected by the brightness data acquired by the brightness acquisition device is inconsistent with the preset known gamma value, and even the problem that the compensated display effect is worse occurs.
Based on the above-identified technical problems, embodiments of the present application provide a compensation gray level determining method, a compensation gray level determining device, a compensation gray level determining apparatus, and a computer-readable storage medium, and embodiments of the compensation gray level determining method, the compensation gray level determining device, the compensation gray level determining apparatus, and the computer-readable storage medium will be described below with reference to the accompanying drawings.
The embodiment of the application provides a compensation gray scale determining method for determining a compensation gray scale value of a display panel, wherein the display panel can be an Organic LIGHT EMITTING Diode (OLED) display panel, and in other implementations of the application, the display panel can also be a liquid crystal display panel, a Micro light emitting Diode (Micro LED) display panel, a quantum dot display panel, etc., which is not limited in this application. The display panel of the embodiments of the present application may be presented in various forms, some examples of which will be described below.
The gray scale compensation method provided by the embodiment of the application can be executed by a gray scale compensation device. As shown in fig. 2, the method for determining the compensation gray scale according to the embodiment of the present application includes steps S210 to S240.
Step S210, a calibration picture is displayed in a test area of the display panel, the test area comprises a first sub-area and a second sub-area which are alternately distributed, the calibration picture comprises a first picture and a second picture, the gray scale value of the first picture is a first gray scale value, the gray scale value of the second picture is a second gray scale value, the first sub-area displays the first picture, and the second sub-area displays the second picture.
Step S220, collecting a first luminance of the first sub-region and a second luminance of the second sub-region.
Step S230, determining a calibration gamma value corresponding to the first gray scale value according to the first brightness and the second brightness.
Step S240, determining the compensation gray scale value of the sub-pixel of the display panel under the first gray scale value according to the calibration gamma value.
The compensation gray level determining method provided by the embodiment of the application is not limited to determining the compensation value by using the preset known gamma value, but determines the calibration gamma value represented by the collected brightness data according to the collected actual brightness information, and further determines the compensation gray level value according to the calibration gamma value. Specifically, a calibration picture is displayed in a test area, the test area is divided into a first subarea and a second subarea which are alternately distributed, the first subarea displays a first picture with a gray level value being the first gray level value, the second subarea displays a second picture with a gray level value being the second gray level value, and the brightness change of the first subarea and the second subarea can represent the change relation of brightness along with gray level due to different gray level pictures displayed by the first subarea and the second subarea, namely, the calibration gamma value represented by the collected brightness data can be determined according to the brightness of the first subarea and the second subarea. The compensation value of the sub-pixel under the first gray level value is determined based on the acquired brightness value and gamma value of the sub-pixel under the first gray level value, and the compensation gray level value is determined by utilizing the calibration gamma value reflected by the acquired brightness data instead of directly determining the compensation gray level value by using the preset known gamma value, so that the problem of poor compensation effect of the display panel can be reduced or compensated due to the instability and poor consistency of the brightness acquisition equipment.
For example, the first sub-region and the second sub-region may each include a plurality of sub-pixels, the first luminance may be an average luminance value of the plurality of sub-pixels of the first sub-region at a first gray scale value, and the second luminance may be an average luminance value of the plurality of sub-pixels of the second sub-region at a second gray scale value.
For example, in the case where the luminance acquisition device can acquire the luminance of the single sub-pixel, step S220 may specifically include: collecting the respective corresponding brightness of a plurality of sub-pixels of the first sub-region under a first gray scale value, and calculating the average brightness of the plurality of sub-pixels of the first sub-region under the first gray scale value to obtain the first brightness of the first sub-region; and acquiring the respective corresponding brightness of the plurality of sub-pixels of the second sub-region under the second gray scale value, and calculating the average brightness of the plurality of sub-pixels of the second sub-region under the second gray scale value to obtain the second brightness of the second sub-region.
For example, in case the luminance acquisition device may directly acquire the luminance average value of the first sub-region and the second sub-region, the luminance acquisition device may directly acquire the first luminance of the first sub-region and the second luminance of the second sub-region.
It will be appreciated that the display panel 100 includes a display area AA as shown in fig. 3 or 4. For example, as shown in fig. 3, the test area AC may be a partial area of the display area AA, that is, in step S210, only a partial area of the display area AA may be lighted as the test area AC. As another example, as shown in fig. 4, the entire display area AA may be regarded as the test area AC, that is, in step S210, the entire area of the display area AA may be lighted up as the test area AC.
The number of the first sub-area a11 and the second sub-area a12 is not limited in the embodiment of the present application, for example, as shown in fig. 3, the number of the first sub-area a11 and the second sub-area a12 may be only one, or as shown in fig. 4, the number of the first sub-area a11 and the second sub-area a12 may be multiple.
It will be appreciated that in case the first sub-area a11 and the second sub-area a12 are only one, the first sub-area a11 and the second sub-area a12 may be adjacently distributed in only one direction.
In some alternative embodiments, in the case that the number of the first sub-area a11 and the second sub-area a12 is plural, the first sub-area a11 and the second sub-area a12 may be alternately distributed in the first direction X and the second direction Y, and the first direction X and the second direction Y intersect. For example, the first direction X may be a row direction and the second direction Y may be a column direction.
By arranging the plurality of first sub-areas a11 and the plurality of second sub-areas a12 to be alternately distributed, the first sub-areas a11 display a first picture with a first gray level value, the second sub-areas a12 display a second picture with a second gray level value, and the plurality of first sub-areas a11 and the plurality of second sub-areas a12 constitute a checkerboard format picture. It can be understood that the first gray scale value and the second gray scale value are different, so that the high gray scale and the low gray scale in the checkerboard frame formed by the plurality of first sub-areas a11 and the plurality of second sub-areas a12 are interspersed, and uniformity of the display frame can be ensured, thereby being beneficial to accuracy of the calibration gamma value obtained by utilizing the brightness of the high gray scale and the low gray scale in the checkerboard frame in the subsequent steps.
For example, the shapes of the first sub-area a11 and the second sub-area a12 may not be limited in the embodiments of the present application, for example, the shapes of the first sub-area a11 and the second sub-area a12 may be rectangular, regular pentagonal, regular hexagonal, etc.
For example, the plurality of first sub-areas a11 may have the same rectangular shape, and the plurality of second sub-areas a12 may have the same rectangular shape. In some alternative embodiments, the first sub-area a11 and the second sub-area a12 may each be rectangular in shape, and the lengths of the first sub-area a11 and the second sub-area a12 in the first direction are equal, and the widths of the first sub-area a11 and the second sub-area a12 in the first direction are equal. By dividing the display area of the display panel into a plurality of rectangular first sub-areas A11 and a plurality of rectangular second sub-areas A12 which are arranged in an array mode and are alternately distributed, on one hand, the uniformity of a display picture can be further ensured, and the accuracy of a calibration gamma value obtained by utilizing the brightness of high and low gray-scale pictures in a chessboard-format picture in the subsequent steps is further facilitated; on the other hand, the acquisition of the luminance of the first sub-area a11 and the second sub-area a12 may be facilitated.
By way of example, the area of the first sub-area a11 and the second sub-area a12 may not be limited in the embodiment of the present application. For example, in order to facilitate the subsequent acquisition of the brightness of the plurality of first sub-areas a11 and the plurality of second sub-areas a12, the first sub-areas a11 and the second sub-areas a12 may include a plurality of rows and columns of pixel units, and the pixel units may include sub-pixels of a plurality of colors.
It is understood that the first gray scale value and the second gray scale value are different. The first gray scale value and the second gray scale value may be any gray scale value that can be displayed by the display panel. For example, the gray scale range that the display panel can display is 0 to 255, and the first gray scale value and the second gray scale value may be any one of 0 to 255. For example, in determining the compensation gray scale of the display panel, the compensation gray scales under some designated gray scale binding points may be determined first, and then the compensation gray scales corresponding to the gray scales outside the gray scale binding points may be determined by using a linear interpolation method. Specifically, the first gray scale value may be any one of 32 gray scales, 64 gray scales, 96 gray scales, 128 gray scales, 160 gray scales, 192 gray scales, 224 gray scales, and 255 gray scales. After the first gray scale value is determined, the second gray scale value may be empirically set. For example, the absolute value of the difference between the first gray level value and the second gray level value may be greater than or equal to a first threshold value and less than or equal to a second threshold value, e.g., the first threshold value is 10 and the second threshold value is 20. For example, in the case where the first gray scale value is equal to 224 gray scale, the second gray scale value may be equal to 240 gray scale.
In some alternative embodiments, as shown in fig. 5, before step S210, the method for determining a compensation gray level according to the embodiment of the present application may further include steps S510 to S530.
In step S510, luminance data of sub-pixels in at least part of the display area of the display panel under the first frame is collected.
Step S520, determining the brightness difference range according to the brightness data of the sub-pixels in at least part of the display area under the first picture.
In step S530, a second gray-scale value is determined according to the brightness difference range, such that the first ratio is greater than or equal to the maximum value of the brightness difference range, the first ratio is the ratio of the first difference value to the brightness average value of at least part of the display area, and the first difference value is the difference between the brightness value corresponding to the second gray-scale value on the preset gamma curve and the brightness average value of at least part of the display area.
In step S510, at least a portion of the display area of the display panel may be caused to display a first screen. For example, a certain row or a certain adjacent plurality of rows of display areas of the display panel can be made to display a first picture, or the display panel is an under-screen camera display panel, including a main screen area and an auxiliary screen area, and the auxiliary screen area is correspondingly provided with a camera, so that the auxiliary screen area of the display panel can display the first picture.
For example, the display panel may include sub-pixels of a plurality of colors. For example, the display panel may include red, green, and blue sub-pixels. Taking the red sub-pixel as an example, in step S510, luminance data of each red sub-pixel in at least part of the display area under the first frame may be collected. In step S520, the collected luminance average value of the red sub-pixels in at least part of the display area may be calculated, and then the ratio of the luminance of each red sub-pixel to the luminance average value of the red sub-pixel is calculated, where the maximum ratio and the minimum ratio in the ratios corresponding to each red sub-pixel form the luminance difference range corresponding to the red sub-pixel.
The gray scale value of the first picture is a first gray scale value, and the average brightness value of the red sub-pixels can be used as the brightness value corresponding to the first gray scale value. In step S530, the second gray level value may be determined by using a preset known gamma value, where the gamma curve is known, and the gamma curve is considered to be the corresponding relationship between the gray level and the brightness. Therefore, in step S530, the luminance value corresponding to the first gray-scale value may be multiplied by the maximum value in the luminance difference range to obtain a maximum luminance value, and then the maximum gray-scale value corresponding to the maximum luminance value may be found on the preset known gamma curve, and the second gray-scale value may be set to be greater than or equal to the maximum gray-scale value. Since the second gray scale value is greater than or equal to the maximum brightness value, it can be understood that the brightness difference between the second gray scale value and the first gray scale value can cover the brightness error caused by the instability of the brightness acquisition device, so that the accuracy of the subsequent calibration gamma value can be ensured.
The determination method of the second gray level value is described above by taking the red sub-pixel as an example, and the determination method of the second gray level value corresponding to the sub-pixel of other colors can refer to the red sub-pixel, which is not described in detail herein.
Illustratively, in step S510, luminance data of sub-pixels within at least a portion of a display area of a display panel under a first screen may be acquired using a luminance acquisition device. Of course, in step S220, the luminance of the first sub-area and the second sub-area may also be acquired by the luminance acquisition device, and for convenience of distinction, the luminance of the first sub-area is referred to herein as a first luminance, and the luminance of the second sub-area is referred to as a second luminance. Illustratively, the brightness acquisition device may be a color analyzer, or a high resolution and high precision camera such as a charge coupled device (Charge Coupled Device, CCD) camera, or the like.
In some alternative embodiments, the display panel may include multiple color sub-pixels, as described above. For example, the display panel may include red, green, and blue sub-pixels. The calibration gamma value corresponding to each color sub-pixel and the compensation gray scale value of each color sub-pixel at the first gray scale value can be determined separately. It will be understood that, for any one color of sub-pixel, the test area needs to display the test frame corresponding to the color, so the first frame may include a first frame corresponding to each color of sub-pixel, and the second gray-scale frame may include a second frame corresponding to each color of sub-pixel. For example, the first frame may include a red frame, a green frame, and a blue frame having a gray scale value of a first gray scale value, and the second frame may include a red frame, a green frame, and a blue frame having a gray scale value of a second gray scale value. The calibration gamma value and the compensation gray scale value corresponding to the sub-pixels of each color can be respectively determined, so in step S210, the calibration picture corresponding to the sub-pixels of each color can be respectively displayed in the test area of the display panel, and in step S220, the brightness of the first sub-area and the second sub-area under the calibration picture corresponding to the sub-pixels of each color is respectively collected. Correspondingly, the step S230 may specifically include: and determining the calibration gamma values corresponding to the sub-pixels of each color respectively according to the first brightness and the second brightness. Therefore, the corresponding calibration gamma value of the sub-pixels of each color under the first gray scale value can be determined respectively, and the same calibration gamma value is avoided from being used by a plurality of colors, so that the accuracy of the compensation gray scale value of the sub-pixels of each color under the first gray scale value is improved. In some alternative embodiments, still taking the number of the first sub-area and the second sub-area as a plurality of examples, as shown in fig. 6, before step S230, the method for determining the compensation gray level according to the embodiment of the present application may further include step S610.
In step S610, a first luminance average value of the plurality of first sub-regions and a second luminance average value of the plurality of second sub-regions are calculated.
Correspondingly, the step S230 may specifically include: and determining a calibration gamma value corresponding to the first gray scale value according to the first brightness average value and the second brightness average value.
For example, the number of the first sub-area and the second sub-area is 10, taking red sub-pixels as an example, and the number of the red sub-pixels in the first sub-area and the second sub-area is 100, where in the case that the brightness collecting device can collect the brightness of a single sub-pixel, the first brightness average value may be a ratio of a sum of the brightness of the red sub-pixels in the 1000 first sub-areas to 1000, and the second brightness average value may be a ratio of a sum of the brightness of the red sub-pixels in the 1000 second sub-areas to 1000. In the case that the luminance collecting device can directly collect the luminance average value of the first sub-region and the second sub-region, the first luminance average value may be a ratio of a sum of 10 luminance average values of the first sub-region to 10, and the second luminance average value may be a ratio of a sum of 10 luminance average values of the second sub-region to 10.
In the embodiment of the application, the calibration gamma value is determined by the brightness average value, so that the obtained calibration gamma value is more accurate.
In some alternative embodiments, taking the number of the first sub-area and the second sub-area as a plurality of examples, step S230 may specifically include: determining a calibration gamma value according to the following expression (1):
Wherein Gamma ratio represents a calibration Gamma value, N1 represents a first gray-scale value, N2 represents a second gray-scale value, L n1 represents a first luminance average value of the plurality of first sub-regions, and L n2 represents a second luminance average value of the plurality of second sub-regions.
For example, the different first gray-scale values may correspond to different calibration gamma values. In addition, as described above, the different first gray scale values may correspond to the different second gray scale values. For example, the first gray scale value may be 224 gray scales and the corresponding second gray scale value may be 240 gray scales; for another example, the first gray scale value may be 96 gray scales and the corresponding second gray scale value may be 112 gray scales.
The gamma curve can be understood as a relation of brightness along with gray scale, taking an 8bit panel as an example, the maximum gray scale value of the display panel is 255, the first gray scale value N1 and the first brightness average value L n1 conform to the relation (1.1), and the second gray scale value N2 and the second brightness average value 2 conform to the relation (1.2):
wherein L max represents a luminance value at a gray-scale value of 255.
Dividing formula (1.1) by formula (1.2) gives formula (1.3):
The above expression (1) can be obtained further according to the expression (1.3).
In the embodiment of the application, the calibration gamma value is directly calculated according to the formula (1), so that the accuracy and the calculation efficiency can be improved.
In some optional embodiments, before step S240, the method for determining a compensation gray scale provided in the embodiment of the present application may further include: determining an acquisition luminance value of the sub-pixels in the second sub-region at the first gray scale value according to the following expression (2):
Wherein L 21 represents the collected luminance value of the sub-pixel in the second sub-region at the first gray level, L 2 represents the collected luminance value of the sub-pixel in the second sub-region at the second gray level, N1 represents the first gray level, N2 represents the second gray level, and Gamma ratio represents the calibration Gamma.
When determining the compensation gray scale value of the sub-pixel under the first gray scale value, the compensation gray scale values corresponding to the sub-pixels in the first sub-region and the second sub-region need to be determined. Since the first frame with the first gray-scale value is displayed in the first sub-area in step S210, in the case that the brightness of the single sub-pixel can be acquired by the brightness acquisition device, the acquired brightness value of each sub-pixel in the first sub-area under the first gray-scale value can be directly acquired in step S220. In the step S210, the second sub-area displays the second frame with the second gray level, and in the embodiment of the application, the collected luminance value of the sub-pixels in the second sub-area under the first gray level can be determined directly by the expression (2), so that the second sub-area does not need to display the first frame with the first gray level, and the luminance data of the second sub-area under the first frame does not need to be collected any more, thereby improving the efficiency. In addition, in the embodiment of the application, the collected brightness value of the sub-pixel in the second sub-region under the first gray scale value is determined through the calibration Gamma ratio embodied by the collected brightness data, so that the accuracy of the determined collected brightness value of the sub-pixel in the second sub-region under the first gray scale value is further ensured.
In some alternative embodiments, step S240 may specifically include: determining a compensation gray-scale value according to the following expression (3):
Wherein N x represents a compensation gray-scale value, N1 represents a first gray-scale value, L aver represents a target brightness value corresponding to the first gray-scale value, L 1 represents an acquisition brightness value of a sub-pixel of the display panel under the first gray-scale value, and Gamma ratio represents a calibration Gamma value.
The sub-pixels may include a sub-pixel located in the first sub-region and a sub-pixel located in the second sub-region, and if the sub-pixel is a sub-pixel located in the first sub-region, L 1 may directly obtain the collected luminance value of the sub-pixel in the first sub-region under the first gray-scale value in step S220; if the subpixel is a subpixel located in the second sub-region, L 1 may be equal to L 21 determined by expression (2) above.
For example, the target luminance value L aver corresponding to the first gray-scale value may be set directly according to experience, the average luminance value of the first sub-areas under the first gray-scale value may be used as the target luminance value L aver corresponding to the first gray-scale value, and the average luminance value of the first sub-areas and the second sub-areas under the first gray-scale value may be used as the target luminance value L aver corresponding to the first gray-scale value.
According to the above equation (3), a desired compensation gray-scale value can be accurately obtained.
In some optional embodiments, after step S240, the method for determining a compensation gray scale provided in the embodiment of the present application may further include: and storing the compensation gray scale value into a storage module of the display panel. Therefore, the display panel can directly call the pre-stored compensation gray scale value in the actual display process, and the compensation efficiency can be improved.
Fig. 7 is a schematic structural diagram of a compensation gray scale determining device according to an embodiment of the present application. As shown in fig. 7, the compensation gray-scale determining apparatus 700 provided by the embodiment of the application includes a display enabling module 701, a brightness collecting module 702, a calibration gamma determining module 703, and a compensation gray-scale determining module 704.
The display enabling module 701 is configured to display a calibration picture in a test area of the display panel, where the test area includes a first sub-area and a second sub-area that are alternately distributed, the calibration picture includes a first picture and a second picture, a gray scale value of the first picture is a first gray scale value, a gray scale value of the second picture is a second gray scale value, the first sub-area displays the first picture, and the second sub-area displays the second picture;
a brightness acquisition module 702, configured to acquire a first brightness of the first sub-region and a second brightness of the second sub-region;
a calibration gamma determining module 703, configured to determine a calibration gamma value corresponding to the first gray scale value according to the first brightness and the second brightness;
The compensation gray level determining module 704 is configured to determine a compensation gray level value of the sub-pixel of the display panel at the first gray level value according to the calibration gamma value.
According to the compensation gray level determining device provided by the embodiment of the application, the compensation value is not limited to be determined by using the preset known gamma value, but the calibration gamma value represented by the collected brightness data is determined according to the collected actual brightness information, and the compensation gray level value is further determined according to the calibration gamma value. Specifically, a calibration picture is displayed in a test area, the test area is divided into a first subarea and a second subarea which are alternately distributed, the first subarea displays a first picture with a gray level value being the first gray level value, the second subarea displays a second picture with a gray level value being the second gray level value, and the brightness change of the first subarea and the second subarea can represent the change relation of brightness along with gray level due to different gray level pictures displayed by the first subarea and the second subarea, namely, the calibration gamma value represented by the collected brightness data can be determined according to the brightness of the first subarea and the second subarea. The compensation value of the sub-pixel under the first gray level value is determined based on the acquired brightness value and gamma value of the sub-pixel under the first gray level value, and the compensation gray level value is determined by utilizing the calibration gamma value reflected by the acquired brightness data instead of directly determining the compensation gray level value by using the preset known gamma value, so that the problem of poor compensation effect of the display panel can be reduced or compensated due to the instability and poor consistency of the brightness acquisition equipment.
In some alternative embodiments, the number of first sub-regions and second sub-regions is a plurality, the plurality of first sub-regions and the plurality of second sub-regions being alternately distributed in the intersecting first and second directions.
In some alternative embodiments, the first sub-region and the second sub-region are rectangular regions, and the first sub-region and the second sub-region are equal in length in the first direction and the first sub-region and the second sub-region are equal in width in the second direction.
In some alternative embodiments, the number of the first sub-area and the second sub-area is plural, and the calibration gamma determining module 703 is specifically configured to:
calculating a first luminance average value of the plurality of first subareas and a second luminance average value of the plurality of second subareas;
And determining a calibration gamma value corresponding to the first gray scale value according to the first brightness average value and the second brightness average value.
In some alternative embodiments, the calibration gamma determination module 703 is specifically configured to:
Determining a calibration gamma value according to the following expression:
Wherein Gamma ratio represents a calibration Gamma value, N1 represents a first gray level value, N2 represents a second gray level value, L n1 represents a first luminance average value, and L n2 represents a second luminance average value.
In some alternative embodiments, the compensation gray level determination module 704 is specifically configured to:
Determining a compensation gray scale value according to the following expression:
Wherein N x represents a compensation gray-scale value, N1 represents a first gray-scale value, L aver represents a target brightness value corresponding to the first gray-scale value, L 1 represents an acquisition brightness value of a sub-pixel of the display panel under the first gray-scale value, and Gamma ratio represents a calibration Gamma value.
In some alternative embodiments, the compensation gray level determination module 704 may also be configured to:
Determining an acquisition brightness value of the sub-pixels in the second sub-region at the first gray scale value according to the following expression:
Wherein L 21 represents the collected luminance value of the sub-pixel in the second sub-region at the first gray level, L 2 represents the collected luminance value of the sub-pixel in the second sub-region at the second gray level, N1 represents the first gray level, N2 represents the first gray level, and Gamma ratio represents the calibration Gamma.
In some alternative embodiments, the brightness acquisition module 702 may also be configured to:
Collecting brightness data of sub-pixels in at least part of a display area of a display panel under a first picture;
Determining a brightness difference range according to brightness data of the sub-pixels in at least part of the display area under the first picture;
And determining a second gray scale value according to the brightness difference range, so that the first ratio is greater than or equal to the maximum value of the brightness difference range, wherein the first ratio is the ratio of the first difference value to the brightness average value of at least part of the display area, and the first difference value is the difference between the brightness value corresponding to the second gray scale value on a preset gamma curve and the brightness average value of at least part of the display area.
In some alternative embodiments, the compensation gray level determining apparatus 700 provided in the embodiments of the present application may further include a pre-storing module. The pre-storing module is used for storing the compensation gray scale value into the storage module of the display panel.
The compensation gray scale determining device in the embodiment of the application can be a device, and can also be a component, an integrated circuit or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), etc., and the non-mobile electronic device may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a Television (TV), a teller machine, a self-service machine, etc., and the embodiments of the present application are not limited in particular.
The compensation gray scale determining device in the embodiment of the application can be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, and the embodiment of the present application is not limited specifically.
Fig. 8 is a schematic diagram showing a hardware configuration of a compensation voltage determining apparatus according to an embodiment of the present invention.
The compensation gray level determination device may include a processor 801 and a memory 802 storing computer program instructions.
In particular, the processor 801 may include a Central Processing Unit (CPU), or Application SPECIFIC INTEGRATED Circuit (ASIC), or may be configured as one or more integrated circuits that implement embodiments of the present invention.
Memory 802 may include mass storage for data or instructions. By way of example, and not limitation, memory 802 may include a hard disk drive (HARD DISK DRIVE, HDD), a floppy disk drive, flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (Universal Serial Bus, USB) drive, or a combination of two or more of these. Memory 802 may include removable or non-removable (or fixed) media, where appropriate. Memory 802 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In a particular embodiment, the memory 802 is a non-volatile solid-state memory. In a particular embodiment, the memory 802 includes Read Only Memory (ROM). The ROM may be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these, where appropriate.
The processor 801 implements any of the compensation gray level determination methods of the above embodiments by reading and executing computer program instructions stored in the memory 802.
In one example, the compensation gray scale determination device may further include a communication interface 803 and a bus 810. As shown in fig. 8, the processor 801, the memory 802, and the communication interface 803 are connected to each other via a bus 810 and perform communication with each other.
Communication interface 803 is primarily used to implement communication between modules, devices, units, and/or apparatuses in an embodiment of the present invention.
Bus 810 includes hardware, software, or both, coupling components of the compensation voltage determination device to each other. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel architecture (MCa) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of the above. Bus 810 may include one or more buses, where appropriate. Although embodiments of the invention have been described and illustrated with respect to a particular bus, the invention contemplates any suitable bus or interconnect.
The compensation gray-scale determining apparatus may perform the compensation gray-scale determining method in the embodiment of the present application, thereby implementing the compensation gray-scale determining method and the compensation gray-scale determining device described in connection with fig. 2 and 7.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, can implement the method for determining the compensation gray level in the above embodiment, and achieve the same technical effects, and in order to avoid repetition, the description is omitted here.
The processor is a processor in the electronic device in the above embodiment. Examples of computer readable storage media include non-transitory machine readable media such as electronic circuits, semiconductor Memory devices, read-Only Memory (ROM), flash Memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, and the like.
It should be understood that the application is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. The method processes of the present application are not limited to the specific steps described and shown, but various changes, modifications and additions, or the order between steps may be made by those skilled in the art after appreciating the spirit of the present application.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. "computer-readable medium" may include any medium capable of storing or transmitting information. Examples of a computer readable medium include an electronic circuit, a semiconductor memory device, a ROM, a flash memory, an Erasable ROM (EROM), a floppy disk, a CD-ROM, an optical disk, a hard disk, a fiber optic medium, a radio frequency link, and so forth. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. The present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to being, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware which performs the specified functions or acts, or combinations of special purpose hardware and computer instructions.
These embodiments are not exhaustive of all details, nor are they intended to limit the application to the precise embodiments disclosed, in accordance with the application. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, to thereby enable others skilled in the art to best utilize the application and various modifications as are suited to the particular use contemplated. The application is limited only by the claims and the full scope and equivalents thereof.
Claims (9)
1. A method of compensating gray scale determination, the method comprising:
Collecting brightness data of sub-pixels in at least part of a display area of a display panel under a first picture;
Determining a brightness difference range according to brightness data of the sub-pixels in the at least partial display area under the first picture;
determining a second gray scale value according to the brightness difference range, and enabling a first ratio value to be larger than or equal to the maximum value of the brightness difference range, wherein the first ratio value is a ratio of a first difference value to a brightness average value of the at least part of display areas, and the first difference value is a difference between the brightness value corresponding to the second gray scale value on a preset gamma curve and the brightness average value of the at least part of display areas;
Displaying a calibration picture in a test area of a display panel, wherein the test area comprises a first subarea and a second subarea, the calibration picture comprises a first picture and a second picture, the gray scale value of the first picture is a first gray scale value, the gray scale value of the second picture is a second gray scale value, the first subarea displays the first picture, and the second subarea displays the second picture;
Acquiring a first brightness of the first sub-zone and a second brightness of the second sub-zone;
Determining a calibration gamma value corresponding to the first gray scale value according to the first brightness and the second brightness;
determining a compensation gray scale value of a sub-pixel of the display panel under the first gray scale value according to the calibration gamma value;
the first subarea and the second subarea are distributed alternately in a first direction and a second direction which are intersected.
2. The compensation gray scale determination method according to claim 1, wherein the first sub-region and the second sub-region are rectangular regions, and the lengths of the first sub-region and the second sub-region in the first direction are equal, and the widths of the first sub-region and the second sub-region in the second direction are equal.
3. The compensation gray scale determination method according to claim 1, wherein the number of the first sub-region and the second sub-region is plural, and wherein before the determining the calibration gamma value based on the first luminance and the second luminance, the method further comprises:
Calculating a first luminance average value of a plurality of the first subareas and a second luminance average value of a plurality of the second subareas;
The determining, according to the first brightness and the second brightness, a calibration gamma value corresponding to the first gray scale value includes:
And determining a calibration gamma value corresponding to the first gray scale value according to the first brightness average value and the second brightness average value.
4. The method of claim 3, wherein determining the calibration gamma value corresponding to the first gray level value according to the first luminance average value and the second luminance average value comprises:
determining the calibration gamma value according to the following expression:
wherein, Representing the calibration gamma value, N1 representing the first gray level value, N2 representing the second gray level value,/>Representing the first luminance average value,/>Representing the second luminance average.
5. The method of claim 1, wherein determining the compensated gray scale value of the sub-pixel of the display panel at the first gray scale value according to the calibration gamma value comprises:
determining the compensation gray scale value according to the following expression:
wherein, Representing the compensation gray scale value, N1 representing the first gray scale value,/>Representing a target brightness value corresponding to the first gray level value,/>Representing the acquired luminance values of the sub-pixels of the display panel at the first gray scale value,Representing the calibration gamma value.
6. The method of claim 1, further comprising, prior to said determining the compensation gray scale value at the first gray scale value for the sub-pixel of the display panel based on the calibration gamma value:
Determining an acquisition brightness value of the sub-pixels in the second sub-region at the first gray scale value according to the following expression:
wherein, Representing the acquired brightness value of the sub-pixels in the second sub-region at the first gray scale value,/>Representing the collected brightness value of the sub-pixels in the second sub-region under the second gray scale value, N1 represents the first gray scale value, N2 represents the second gray scale value,/>Representing the calibration gamma value.
7. The method of claim 1, wherein the display panel includes sub-pixels of a plurality of colors, the first frame includes a first frame corresponding to the sub-pixels of each color, the second gray frame includes a second frame corresponding to the sub-pixels of each color, and the determining the calibration gamma value according to the first brightness and the second brightness includes:
and determining the calibration gamma values corresponding to the sub-pixels of each color respectively according to the first brightness and the second brightness.
8. A compensation gray scale determining apparatus, the apparatus comprising:
The brightness acquisition module is used for acquiring brightness data of sub-pixels in at least part of the display area of the display panel under a first picture;
a brightness difference range determining module, configured to determine a brightness difference range according to brightness data of the sub-pixels in the at least part of the display areas under the first picture;
The second gray scale value determining module is further configured to determine the second gray scale value according to the brightness difference range, so that a first ratio is greater than or equal to a maximum value of the brightness difference range, where the first ratio is a ratio of a first difference value to a brightness average value of the at least part of the display area, and the first difference value is a difference between a brightness value corresponding to the second gray scale value on a preset gamma curve and the brightness average value of the at least part of the display area;
The display enabling module is used for displaying a calibration picture in a test area of the display panel, the test area comprises a first sub-area and a second sub-area which are alternately distributed, the calibration picture comprises a first picture and a second picture, the gray scale value of the first picture is a first gray scale value, the gray scale value of the second picture is a second gray scale value, the first sub-area displays the first picture, and the second sub-area displays the second picture;
The brightness acquisition module is used for acquiring the first brightness of the first subarea and the second brightness of the second subarea;
The calibration gamma determining module is used for determining a calibration gamma value corresponding to the first gray scale value according to the first brightness and the second brightness;
the compensation gray scale determining module is used for determining a compensation gray scale value of the first gray scale value of the sub-pixel of the display panel according to the calibration gamma value;
the first subarea and the second subarea are distributed alternately in a first direction and a second direction which are intersected.
9. A compensation gray level determination device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, implements the compensation gray level determination method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111576271.8A CN114267279B (en) | 2021-12-21 | 2021-12-21 | Compensation gray level determining method, device and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111576271.8A CN114267279B (en) | 2021-12-21 | 2021-12-21 | Compensation gray level determining method, device and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114267279A CN114267279A (en) | 2022-04-01 |
| CN114267279B true CN114267279B (en) | 2024-04-19 |
Family
ID=80828537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111576271.8A Active CN114267279B (en) | 2021-12-21 | 2021-12-21 | Compensation gray level determining method, device and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114267279B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007279417A (en) * | 2006-04-07 | 2007-10-25 | Hitachi Displays Ltd | Image correction system |
| CN101937660A (en) * | 2010-08-17 | 2011-01-05 | 深圳市华星光电技术有限公司 | Liquid crystal display and pixel display structure thereof |
| CN111397856A (en) * | 2020-03-30 | 2020-07-10 | 昆山国显光电有限公司 | Residual image testing method and residual image testing device for display panel |
| CN111899689A (en) * | 2020-08-17 | 2020-11-06 | 云谷（固安）科技有限公司 | Brightness compensation method and compensation device of display panel |
| CN112216243A (en) * | 2020-10-30 | 2021-01-12 | 京东方科技集团股份有限公司 | Brightness compensation method, driving method and device for display device |
| CN112530347A (en) * | 2020-12-11 | 2021-03-19 | 昆山工研院新型平板显示技术中心有限公司 | Method, device and equipment for determining compensation gray scale |
| CN113345363A (en) * | 2021-06-17 | 2021-09-03 | 合肥维信诺科技有限公司 | Display panel adjusting method and device and computer readable storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175613B (en) * | 2011-01-26 | 2012-11-14 | 南京大学 | Image-brightness-characteristic-based pan/tilt/zoom (PTZ) video visibility detection method |
| KR20160065316A (en) * | 2014-11-28 | 2016-06-09 | 삼성디스플레이 주식회사 | Liquid crystal device |
| CN104992683B (en) * | 2015-07-02 | 2017-11-17 | 武汉华星光电技术有限公司 | The Gamma methods of adjustment and device of liquid crystal display panel |
-
2021
- 2021-12-21 CN CN202111576271.8A patent/CN114267279B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007279417A (en) * | 2006-04-07 | 2007-10-25 | Hitachi Displays Ltd | Image correction system |
| CN101937660A (en) * | 2010-08-17 | 2011-01-05 | 深圳市华星光电技术有限公司 | Liquid crystal display and pixel display structure thereof |
| CN111397856A (en) * | 2020-03-30 | 2020-07-10 | 昆山国显光电有限公司 | Residual image testing method and residual image testing device for display panel |
| CN111899689A (en) * | 2020-08-17 | 2020-11-06 | 云谷（固安）科技有限公司 | Brightness compensation method and compensation device of display panel |
| CN112216243A (en) * | 2020-10-30 | 2021-01-12 | 京东方科技集团股份有限公司 | Brightness compensation method, driving method and device for display device |
| CN112530347A (en) * | 2020-12-11 | 2021-03-19 | 昆山工研院新型平板显示技术中心有限公司 | Method, device and equipment for determining compensation gray scale |
| CN113345363A (en) * | 2021-06-17 | 2021-09-03 | 合肥维信诺科技有限公司 | Display panel adjusting method and device and computer readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114267279A (en) | 2022-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021043143A1 (en) | Display screen aging compensation method, circuit system and electronic device | |
| US11823609B2 (en) | Method and apparatus for gamma debugging | |
| CN111816113A (en) | Brightness compensation method, device and equipment of display panel | |
| CN111816112B (en) | Method and device for determining compensation parameters of display panel | |
| CN112530347B (en) | Method, device and equipment for determining compensation gray scale | |
| CN109036244B (en) | Mura compensation method and device for curved surface display screen and computer equipment | |
| US20170103690A1 (en) | Display driving method and device and display device | |
| CN111833791A (en) | Gamma debugging method and gamma debugging device | |
| US20170148396A1 (en) | Liquid crystal panel and driving method thereof | |
| CN112133239A (en) | Compensation voltage determination method and device and display device | |
| US10048061B2 (en) | Measuring method and measuring system thereof | |
| CN113920917B (en) | Display panel compensation method and compensation device | |
| KR102261520B1 (en) | Display Control Device And Display Controlling Method | |
| CN113539165B (en) | Gamma debugging method, device and equipment for display panel and storage medium | |
| US20240177688A1 (en) | Method, apparatus, device, and medium for compensating brightness | |
| CN113380170B (en) | Display compensation method and device of display panel, display device and medium | |
| US20240127733A1 (en) | Method, apparatus, and device for driving display screen to display | |
| CN114267316A (en) | Gamma debugging method, electronic device and computer readable storage medium | |
| CN114267279B (en) | Compensation gray level determining method, device and equipment | |
| CN114882843B (en) | Method and device for compensating brightness of display panel and computer readable storage medium | |
| CN114882842B (en) | Display driving method, device, equipment and storage medium | |
| CN114613326A (en) | Driving method and device of display panel and computer readable storage medium | |
| CN113889036A (en) | Method for determining compensation gray scale value, compensation method, compensation device, compensation equipment and compensation medium | |
| CN113487993A (en) | Display panel driving method and device and storage medium | |
| CN116129795A (en) | Display screen compensation method, device, equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |