CN109256096B - Display brightness compensation method, device and equipment - Google Patents
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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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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Abstract
The invention provides a display brightness compensation method, a display brightness compensation device and display brightness compensation equipment. The method comprises the following steps: acquiring the brightness of each pixel block in a target area; adjusting the initial reference brightness according to the brightness of each pixel block, and calculating target compensation data of each pixel block according to the adjusted reference brightness and the brightness of each pixel block, wherein the target compensation data are in a preset compensation range; and compensating the brightness of each pixel block according to the target compensation data of each pixel block. The invention improves the compensation effect of uneven brightness and improves the display performance of the display screen on the premise of ensuring the compensation precision.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a display brightness compensation method, device and equipment.
Background
Display devices such as Liquid Crystal Displays (LCDs) have the advantages of high resolution, high brightness, no geometric distortion, high image quality, power saving, thin body, etc., and are widely used in consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, desktop computers, etc., which are used in daily life, due to their small size, light weight, and low power consumption. The display mold is a main body component of the display device, the manufacturing process is complex, and nearly hundreds of processes are required, so various display defects are inevitably generated in the manufacturing process, wherein the mura defects are common defects of uneven brightness (mura), and the mura defects are different colors or brightness sensed by vision under the same light source and the same bottom color, so that visual discomfort is brought to people, and the quality of the display device is seriously affected.
Fig. 1A is a schematic structural diagram of a conventional luminance unevenness compensating apparatus. In order to solve the mura defect of the display device, the implementation process of the prior art is to store the mura compensation data in a flash memory (flash)11 matched with a display screen, then a time sequence control chip (TCON IC)12 reads the mura compensation data stored in the flash memory 11, gray scale data is input to the TCON IC 12, a brightness unevenness compensation (De-mura) module 13 in the TCON IC 12 performs operation according to the mura compensation data and the gray scale data to adjust a gray scale value, then the time sequence control chip 12 outputs the gray scale data after mura compensation, and the brightness of pixels is changed to achieve the repairing effect of mura. FIG. 1B is a schematic diagram of the original mura data and the mura compensation data of the display screen. The reverse gray scale compensation value of the mura position, namely De-mura compensation data, is stored in the flash 11; in the area brighter than the central position of the display screen, the mura compensation data is negative, the gray scale value is reduced, and the area becomes dark; compared with the area which is darker than the central position of the display screen, the Mura compensation data is positive, the gray-scale value is increased, the brightness is lightened, the brightness of each pixel after gray-scale compensation is close to be consistent, the Mura defect is improved, and the brightness uniformity of the display screen is realized.
In the prior art, data compression is performed according to a fixed region range (BlockSize, for example, 4 × 4, 8 × 8 pixels, etc.) based on global compensation. For a single compensation picture, only one mura compensation data is needed within each BlockSize. For example, in the display module of 3840 × 2160, when the blockasize is 8 × 8 pixels, the flash 11 only stores 481 × 271 mura compensation data, and the mura compensation data of other pixels in the blockasize are calculated by the interpolation algorithm.
However, in the prior art, the range of mura compensation data is generally between ± 32 gray-scale values at 8 bits (bit) and converted to ± 127 gray-scale values at 10 bits. However, when the brightness difference in the display screen is large, the prior art cannot meet the actual compensation requirement, and the mura compensation effect of the display screen is poor.
Disclosure of Invention
The invention provides a display brightness compensation method, a display brightness compensation device and display brightness compensation equipment, and aims to solve the problem that actual compensation requirements cannot be met due to large brightness difference in a display screen in the prior art.
In a first aspect, the present invention provides a display brightness compensation method, including:
acquiring the brightness of each pixel block in a target area;
adjusting the initial reference brightness according to the brightness of each pixel block, and calculating target compensation data of each pixel block according to the adjusted reference brightness and the brightness of each pixel block, wherein the target compensation data are in a preset compensation range;
and compensating the brightness of each pixel block according to the target compensation data of each pixel block.
Optionally, the adjusting the initial reference luminance according to the luminance of each pixel block includes:
determining the maximum value and the minimum value of the brightness in the target area according to the brightness of each pixel block;
and adjusting the initial reference brightness according to the maximum value and the minimum value.
Optionally, the adjusting the initial reference luminance according to the luminance of each pixel block includes:
obtaining initial compensation data of each pixel block according to the brightness of each pixel block and the initial reference brightness;
and adjusting the initial reference brightness according to the maximum value and the minimum value in the initial compensation data of each pixel block.
Optionally, each pixel block includes a plurality of pixel points; the acquiring the brightness of each pixel block in the target area comprises the following steps:
acquiring the brightness of pixel points needing compensation in each pixel block;
and obtaining the brightness of each pixel block by calculating the average value of the brightness of the pixel points needing to be compensated in each pixel block.
Optionally, the compensating the brightness of each pixel block according to the target compensation data of each pixel block includes:
and compensating the brightness of the pixel points needing to be compensated in the pixel block according to the target compensation data of each pixel block.
Optionally, before the obtaining the brightness of each pixel block in the target region, the method further includes:
and selecting a partial area of the display screen as the target area.
Optionally, after compensating the brightness of each pixel block according to the target compensation data of each pixel block, the method further includes:
and carrying out interpolation compensation on the brightness of other areas in the display screen according to the brightness of the current target area.
In a second aspect, the present invention provides a display luminance compensation apparatus, comprising:
the acquisition module is used for acquiring the brightness of each pixel block in the target area;
the processing module is used for adjusting the initial reference brightness according to the brightness of each pixel block and calculating target compensation data of each pixel block according to the adjusted reference brightness and the brightness of each pixel block, wherein the target compensation data are in a preset compensation range;
and the compensation module is used for compensating the brightness of each pixel block according to the target compensation data of each pixel block.
Optionally, the processing module is specifically configured to determine a maximum value and a minimum value of the luminance in the target region according to the luminance of each pixel block; and adjusting the initial reference brightness according to the maximum value and the minimum value.
Optionally, the processing module is specifically configured to obtain initial compensation data of each pixel block according to the brightness of each pixel block and the initial reference brightness;
and adjusting the initial reference brightness according to the maximum value and the minimum value in the initial compensation data of each pixel block.
Optionally, the obtaining module is configured to obtain, when each pixel block includes a plurality of pixel points, brightness of a pixel point to be compensated in each pixel block; and obtaining the brightness of each pixel block by calculating the average value of the brightness of the pixel points needing to be compensated in each pixel block.
Optionally, the compensation module is configured to compensate the brightness of a pixel point that needs to be compensated in the pixel block according to the target compensation data of each pixel block.
Optionally, the obtaining module is configured to select a partial area of the display screen as the target area.
Optionally, the compensation module is further configured to perform interpolation compensation on the brightness of other areas in the display screen according to the brightness of the current target area after compensating the brightness of each pixel block according to the target compensation data of each pixel block.
In a third aspect, the present invention provides a display device comprising: a display main body and a display luminance compensation device as described in the second aspect.
In a fourth aspect, the present invention provides a display device comprising: a memory and a processor;
the memory is to store program instructions;
the processor is configured to call the program instructions stored in the memory to implement the display brightness compensation method according to the first aspect.
In a fifth aspect, the present invention provides a readable storage medium comprising: a readable storage medium and a computer program for implementing the display luminance compensation method according to the first aspect.
According to the display brightness compensation method, the display brightness compensation device and the display brightness compensation equipment, the brightness of each pixel block in the target area is obtained in the display screen, the initial reference brightness is adjusted according to the brightness of each pixel block, the adjusted reference brightness suitable for the current display screen can be obtained, and therefore more accurate target compensation data of each pixel block can be calculated according to the adjusted reference brightness and the brightness of each pixel block. Furthermore, when the display screen displays again, the brightness of each pixel block can be accurately compensated according to the accurate target compensation data of each pixel block, so that the brightness of the display screen is more uniform. According to the invention, on the premise of ensuring the compensation precision, the compensation effect of uneven brightness is improved, the actual compensation requirement is met, the brightness of the display screen is more uniform, the display performance and the display effect of the display screen are improved, and the quality of the display screen is improved.
Drawings
FIG. 1A is a schematic diagram of a luminance nonuniformity compensation apparatus;
FIG. 1B is a diagram illustrating original mura data and mura compensation data of a display screen;
FIG. 2 is a schematic flow chart illustrating a display luminance compensation method according to the present invention;
FIG. 3 is a schematic structural diagram of a display luminance compensation apparatus according to the present invention;
fig. 4 is a schematic diagram of a hardware structure of the display device provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Those skilled in the art will appreciate that mura compensation is achieved by varying the gray scale values of the individual pixels, applying lower gray scale values to pixels with higher display brightness, and applying higher gray scale values to pixels with lower display brightness to achieve uniformity of the screen brightness. However, when the brightness difference in the picture is large, the prior art cannot meet the actual compensation requirement, and the compensation effect of the mura of the display screen is poor. In order to solve the above problem, the present embodiment provides a method, an apparatus, a device and a storage medium for compensating display brightness, which are applied to the liquid crystal display technology. The display brightness compensation method of the present embodiment may be executed by the conventional brightness unevenness compensation apparatus in fig. 1A, or may be executed by other compensation apparatuses, which is not limited in the present embodiment.
For convenience of explanation, a specific implementation procedure of the display luminance compensation method according to the present embodiment will be described in detail below, with the conventional luminance unevenness compensation apparatus (simply referred to as a compensation apparatus) in fig. 1A as an implementation subject.
Fig. 2 is a schematic flow chart of a display luminance compensation method according to the present invention. As shown in fig. 2, the display brightness compensation method of the present embodiment may include:
s101, acquiring the brightness of each pixel block in the target area.
Specifically, the compensation device may photograph the display screen using a photographing module such as a camera. The compensation device may select all or part of the display screen as the target area, or may select a part of the display screen that needs mura compensation as the target area.
Further, the target region includes a plurality of pixel blocks, and each pixel block may be formed by one or more pixel points. In this embodiment, the number of pixel blocks and the number of pixels of each pixel block are not limited.
On one hand, when each pixel block only comprises one pixel point, the gray scale value can indicate the brightness degree, so that the brightness of any pixel block can be represented by the gray scale value of the pixel point, namely, the compensation device can obtain the gray scale value corresponding to each pixel point in the target area. In this embodiment, a specific implementation process of the average grayscale value of any pixel block is not limited. For any pixel block, in this embodiment, the sum operation may be performed on the gray scale values corresponding to each pixel point in the pixel block, so as to obtain a sum value, and then an average value of the sum value is taken as an average gray scale value of the pixel block. In this embodiment, the gray-scale value corresponding to the pixel point at the geometric center of the pixel block may also be used as the average gray-scale value of the pixel block. In this embodiment, the gray-scale values corresponding to the pixels to be supplemented in the pixel block may also be summed to obtain a sum, and then an average value of the sum is taken as an average gray-scale value of the pixel block.
On the other hand, when each pixel block includes a plurality of pixel points, the brightness of any pixel block can be represented by an average gray scale value because the gray scale value can indicate the brightness degree, that is, the compensation device can obtain the average gray scale value corresponding to each pixel block in the target region.
In this embodiment, when the compensation device determines the target region, the compensation device may introduce pixels that do not need to be compensated into the target region, so that when each pixel block includes pixels that need to be compensated and pixels that do not need to be compensated, the compensation device may obtain the brightness of the pixels that need to be compensated in each pixel block; and obtaining the brightness of each pixel block by calculating the average value of the brightness of the pixel points needing to be compensated in each pixel block.
Furthermore, in the practical application process, the compensation device can directly determine the region needing brightness compensation, so that when the compensation device determines the target region, the target region can only include pixel points needing compensation, and therefore when each pixel block only includes the pixel points needing compensation, the compensation device can acquire the brightness of all the pixel points in each pixel block; and obtaining the brightness of each pixel block by calculating the average value of the brightness of all pixel points in each pixel block.
S102, adjusting the initial reference brightness according to the brightness of each pixel block, and calculating target compensation data of each pixel block according to the adjusted reference brightness and the brightness of each pixel block, wherein the target compensation data are in a preset compensation range.
Specifically, the compensation device may adjust the initial reference luminance by the luminance of each pixel block in various ways. The initial reference brightness may be determined by a bit rate of a display screen in the display device, and may be determined according to an empirical value. Typically, the display screen is 10 bits, and the initial reference luminance may be represented by a gray scale value of 900. In the following, two possible embodiments are used to describe the specific process of adjusting the initial reference brightness by the compensation device in detail.
In a possible embodiment, optionally, the maximum value and the minimum value of the brightness in the target area are determined according to the brightness of each pixel block; and adjusting the initial reference brightness according to the maximum value and the minimum value.
Specifically, the compensation means may take the maximum value and the minimum value from the luminance of each pixel block as the maximum value and the minimum value of the luminance in the target region. For example, the target region includes three pixel blocks, namely a pixel block 1, a pixel block 2 and a pixel block 3, the luminance of the pixel block 1 can be represented by a gray-scale value 800, the luminance of the pixel block 2 can be represented by a gray-scale value 1000, and the luminance of the pixel block 3 can be represented by a gray-scale value 700, and since the gray-scale value 1000> the gray-scale value 800> the gray-scale value 700, the gray-scale value 1000 can be selected as the maximum value, and the gray-scale value 700 can be selected as the minimum value.
Further, the compensation means may adjust the initial reference luminance based on an average of the sum of the maximum value and the minimum value. For example, when the maximum value is a grayscale value of 1000, the minimum value is a grayscale value of 700, and the initial reference luminance can be represented by a grayscale value of 900, and the average value of the sum of the grayscale values of 1000 and 700 is 850, the initial reference luminance is adjusted by using the average value 850 as the adjusted reference luminance.
In another possible specific embodiment, the initial compensation data of each pixel block is obtained according to the brightness of each pixel block and the initial reference brightness; the initial reference luminance is adjusted based on the maximum value and the minimum value in the initial compensation data for each pixel block.
Specifically, the compensation means may obtain initial compensation data for each pixel block by using the difference between the luminance of each pixel block and the initial reference luminance. For example, the target region includes three pixel blocks, which are a pixel block 1, a pixel block 2, and a pixel block 3, respectively, the luminance of the pixel block 1 may be represented by a gray-scale value 800, the luminance of the pixel block 2 may be represented by a gray-scale value 1000, the luminance of the pixel block 3 may be represented by a gray-scale value 700, and the initial reference luminance may be represented by a gray-scale value 900, so that the initial compensation data of the pixel block 1 is the gray-scale value 800-the gray-scale value 900-the gray-scale value 100, the initial compensation data of the pixel block 2 is the gray-scale value 1000-the gray-scale value 900-the gray-scale value 100, and the initial compensation data of the pixel block 3 is the gray-scale value 700-the gray-scale value 900-the gray-.
Further, the compensation device may select a maximum value and a minimum value in the initial compensation data of each pixel block, calculate an average value of the sum of the maximum value and the minimum value, and adjust the initial reference luminance according to the average value. For example, the initial compensation data of the pixel block 1 is a gray-scale value of-100, the initial compensation data of the pixel block 2 is a gray-scale value of 100, the initial compensation data of the pixel block 3 is a gray-scale value of-200, and the initial reference luminance can be represented by a gray-scale value of 900. since the gray-scale value of 100> the gray-scale value of-200, the gray-scale value of 100 can be selected as the maximum value, the gray-scale value of-200 can be selected as the minimum value, the average value of the sum of the gray-scale values of 100 and 200 is-50, the sum of the average value of-50 and the gray-scale value of 900 is obtained as the gray-scale value 850, that is, the gray-scale value 850 will be used as the adjusted.
Further, the compensation means may adjust the initial reference luminance based on an average of the sum of the maximum value and the minimum value. For example, when the maximum value is a grayscale value of 1000, the minimum value is a grayscale value of 700, and the initial reference luminance is a grayscale value of 900, and the average value of the sum of the grayscale values of 1000 and 700 is 850, the initial reference luminance is adjusted by using the average value 850 as the adjusted reference luminance.
In a specific embodiment, when the luminance at 8bit is converted into the luminance at 10bit, taking the luminance of a plurality of pixel blocks at 8bit acquired by the compensation device, each pixel block being a BlockSize of 8 × 8 pixels, the luminance of each pixel block being represented by an average gray scale value, and the initial reference luminance at 10bit being a gray scale value 900 as an example, a specific implementation process of the methods of the prior art and the embodiment is described respectively.
In the prior art, the gray scale value 900 is subtracted from the average gray scale value of each pixel block to obtain the difference value of each pixel block, and then the compensation data of each pixel block can be obtained according to the difference value of each pixel block. For illustrative purposes, table 1 includes four columns, the first column being the average gray scale value for each pixel block. The second column is the initial reference luminance, i.e., the gray scale value 900. The third column is the difference values for the respective pixel blocks, where the difference values for each pixel block are represented by grayscale values. The fourth column is compensation data for each pixel block, wherein the compensation data for each pixel block is represented by gray scale values.
TABLE 1
In this embodiment, based on the data in table 1, the compensation apparatus may obtain the maximum value as the gray-scale value 101 and the minimum value as the gray-scale value-150 according to the difference value of each pixel block, and find the average value of the sum of the maximum value and the minimum value as the gray-scale value-24.5, and get the gray-scale value-25 as a whole. And summing the gray-scale value-25 with the gray-scale value 900 to obtain the adjusted standard brightness which is the gray-scale value 875. For illustrative purposes, four columns are included in Table 2, the first column being the average gray scale value for each pixel block. The second column is the adjusted reference brightness, i.e., the gray scale value 875. The third column represents the compensation data for each pixel block, wherein the compensation data for each pixel block is represented by gray scale values.
TABLE 2
Since the range of mura compensation data is within the range of ± 127 gray levels at 10 bits, the De-mura module 13 in the compensation apparatus reads the same compensation data as the difference when the difference is within the range of-127 gray levels and +127 gray levels. When the difference is smaller than the gray level value of-127, the compensation data read by the De-mura module 13 in the compensation device is the gray level value of-127; when the difference is greater than the gray level value +127, the value read by the De-mura module 13 in the compensation device is the gray level value + 127. Therefore, when the compensation data is not within the range of ± 127 gray-scale values, the compensation device cannot compensate the correct gray-scale value, resulting in poor compensation effect.
Further, in the prior art, the compensation data compensated by the gray scale value 750 in table 1 is obviously out of the compensation range. In the present embodiment, the compensation data compensated by each pixel block in table 2 is obviously within the compensation range.
And S103, compensating the brightness of each pixel block according to the target compensation data of each pixel block.
Specifically, the compensation means may calculate target compensation data for each pixel block within a predetermined compensation range from the adjusted reference luminance and the luminance of each pixel block. Since the initial reference luminance is empirically determined by those skilled in the art, the prior art cannot consider the problem that the display screen may have a large luminance difference, and is easy to reduce the compensation effect. In the method adopted by this embodiment, the initial reference brightness is adjusted by the original data displayed on the display screen to obtain the adjusted reference brightness suitable for the current display screen, and the target compensation data of each pixel block can be calculated according to the adjusted reference brightness and the brightness of each pixel block. Therefore, when the display screen displays again, the compensation module can accurately compensate the brightness of each pixel block according to the accurate target compensation data of each pixel block, so that the brightness of the display screen is more uniform.
In addition, when the target area is a partial area of the display screen, the compensation device may perform interpolation compensation on the brightness of other areas in the display screen by an interpolation method according to the brightness of the target area, that is, the gray-scale value of each pixel block in the target area. The specific process of interpolation may refer to a specific process in the prior art, which is not described herein.
In the display brightness compensation method provided in this embodiment, the brightness of each pixel block in the target area is obtained in the display screen, and the initial reference brightness is adjusted according to the brightness of each pixel block, so that the adjusted reference brightness suitable for the current display screen can be obtained, and then, according to the adjusted reference brightness and the brightness of each pixel block, more accurate target compensation data of each pixel block can be calculated. Furthermore, when the display screen displays again, the brightness of each pixel block can be accurately compensated according to the accurate target compensation data of each pixel block, so that the brightness of the display screen is more uniform. In the embodiment, on the premise of ensuring the compensation precision, the compensation effect of uneven brightness is improved, the actual compensation requirement is met, the brightness of the display screen is more uniform, the display performance and the display effect of the display screen are improved, and the quality of the display screen is improved.
Fig. 3 is a schematic structural diagram of the display luminance compensation apparatus provided in the present invention, and as shown in fig. 3, the display luminance compensation apparatus 30 of the present embodiment may include:
an obtaining module 31, configured to obtain the brightness of each pixel block in the target region;
a processing module 32, configured to adjust an initial reference brightness according to the brightness of each pixel block, and calculate target compensation data of each pixel block according to the adjusted reference brightness and the brightness of each pixel block, where the target compensation data is within a predetermined compensation range;
and a compensation module 33, configured to compensate the brightness of each pixel block according to the target compensation data of each pixel block.
Optionally, the processing module 32 is specifically configured to determine a maximum value and a minimum value of the luminance in the target region according to the luminance of each pixel block; and adjusting the initial reference brightness according to the maximum value and the minimum value.
Optionally, the processing module 32 is specifically configured to obtain initial compensation data of each pixel block according to the brightness of each pixel block and the initial reference brightness; the initial reference luminance is adjusted based on the maximum value and the minimum value in the initial compensation data for each pixel block.
Optionally, the obtaining module 31 is configured to obtain, when each pixel block includes a plurality of pixel points, brightness of a pixel point to be compensated in each pixel block; and obtaining the brightness of each pixel block by calculating the average value of the brightness of the pixel points needing to be compensated in each pixel block.
Optionally, the compensation module 33 is configured to compensate the brightness of a pixel point that needs to be compensated in each pixel block according to the target compensation data of the pixel block.
Optionally, the obtaining module 31 is configured to select a partial area of the display screen as the target area.
Optionally, the compensation module 33 is further configured to perform interpolation compensation on the brightness of other areas in the display screen according to the brightness of the current target area after compensating the brightness of each pixel block according to the target compensation data of each pixel block.
The display brightness compensation device provided in this embodiment may implement the above display brightness compensation method embodiment, and specific implementation principles and technical effects thereof may refer to the above method embodiment, which is not described herein again.
In the present invention, the display luminance compensation apparatus may be divided into functional blocks according to the above method, for example, each functional block may be divided according to each function, or two or more functions may be integrated into one processing block. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that the division of the modules in the embodiments of the present invention is schematic, and is only a logical function division, and there may be another division manner in actual implementation.
Fig. 4 is a schematic diagram of a hardware structure of the display device provided by the present invention. As shown in fig. 4, the display device 40 is configured to implement the operation of any one of the above method embodiments corresponding to the display brightness compensation device or the display device including the display brightness compensation device, and the display device 40 of this embodiment may include: a memory 41 and a processor 42;
a memory 41 for storing a computer program;
and a processor 42 for executing the computer program stored in the memory to implement the display brightness compensation method in the above-described embodiments. Reference may be made in particular to the description relating to the method embodiments described above.
Alternatively, the memory 41 may be separate or integrated with the processor 42.
When the memory 41 is a device independent of the processor 42, the display device 40 may further include:
a bus 43 for connecting the memory 41 and the processor 42.
Optionally, this embodiment further includes: a communication interface 44, the communication interface 44 being connectable to the processor 42 via a bus 43. The processor 42 may control the communication interface 43 to implement the above-described receiving and transmitting functions of the display device 40.
The display device provided in this embodiment can be used to execute the above display brightness compensation method, and its implementation manner and technical effect are similar, which are not described herein again.
The present invention also provides a computer-readable storage medium including a computer program for implementing the display luminance compensation method as in the above embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present invention are not limited to only one bus or one type of bus.
The computer-readable storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for compensating display brightness, comprising:
acquiring the brightness of pixel points needing compensation in each pixel block in a target region, wherein each pixel block comprises a plurality of pixel points;
calculating the average value of the pixel point brightness needing to be compensated in each pixel block to obtain the brightness of each pixel block;
adjusting the initial reference brightness according to the brightness of each pixel block, and calculating target compensation data of each pixel block according to the adjusted reference brightness and the brightness of each pixel block, wherein the target compensation data are in a preset compensation range;
and compensating the brightness of the pixel points needing to be compensated in each pixel block according to the target compensation data of each pixel block.
2. The method of claim 1, wherein said adjusting an initial reference luminance based on the luminance of said each pixel block comprises:
determining the maximum value and the minimum value of the brightness in the target area according to the brightness of each pixel block;
and adjusting the initial reference brightness according to the maximum value and the minimum value.
3. The method of claim 1, wherein said adjusting an initial reference luminance based on the luminance of said each pixel block comprises:
obtaining initial compensation data of each pixel block according to the brightness of each pixel block and the initial reference brightness;
and adjusting the initial reference brightness according to the maximum value and the minimum value in the initial compensation data of each pixel block.
4. The method according to any one of claims 1-3, wherein before obtaining the brightness of each pixel block in the target region, further comprising:
and selecting a partial area of the display screen as the target area.
5. The method according to claim 4, wherein after compensating the brightness of each pixel block according to the target compensation data of each pixel block, the method further comprises:
and carrying out interpolation compensation on the brightness of other areas in the display screen according to the brightness of the current target area.
6. A display luminance compensation apparatus, comprising:
the device comprises an acquisition module, a compensation module and a compensation module, wherein the acquisition module is used for acquiring the brightness of pixel points needing to be compensated in each pixel block in a target region, and each pixel block comprises a plurality of pixel points; calculating the average value of the pixel point brightness needing to be compensated in each pixel block to obtain the brightness of each pixel block;
the processing module is used for adjusting the initial reference brightness according to the brightness of each pixel block and calculating target compensation data of each pixel block according to the adjusted reference brightness and the brightness of each pixel block, wherein the target compensation data are in a preset compensation range;
and the compensation module is used for compensating the brightness of the pixel points needing to be compensated in each pixel block according to the target compensation data of each pixel block.
7. A display device, comprising: a memory and a processor;
the memory is to store program instructions;
the processor is configured to call program instructions stored in the memory to implement the display brightness compensation method of any one of claims 1-5.
8. A readable storage medium, comprising: a readable storage medium and a computer program for implementing the display luminance compensation method according to any one of claims 1 to 5.
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| CN110189721B (en) * | 2019-06-20 | 2020-11-24 | 深圳市华星光电技术有限公司 | Mura compensation method and device of display panel |
| CN110599943B (en) * | 2019-10-25 | 2023-05-30 | 京东方科技集团股份有限公司 | Display panel pixel compensation method and compensation device and display panel |
| CN111009207B (en) * | 2019-12-25 | 2022-07-01 | 武汉天马微电子有限公司 | Method and device for improving display unevenness of display screen |
| CN113470571B (en) * | 2020-03-30 | 2022-08-05 | 北京小米移动软件有限公司 | Brightness compensation method and device, electronic equipment and computer readable storage medium |
| CN111445882B (en) * | 2020-05-08 | 2021-07-27 | 中航华东光电有限公司 | Image display ghost filtering method and system based on FPGA |
| CN111554224B (en) * | 2020-05-15 | 2022-09-16 | 昆山国显光电有限公司 | Display panel mura compensation method and device and display device |
| TWI780443B (en) * | 2020-06-09 | 2022-10-11 | 大陸商北京集創北方科技股份有限公司 | Pixel compensation method of OLED display panel and information processing device using the same |
| CN111899692B (en) * | 2020-08-24 | 2021-09-24 | 武汉天马微电子有限公司 | OLED display device, compensation data power-on transmission method and image display method |
| CN112102794B (en) * | 2020-09-08 | 2021-10-08 | Tcl华星光电技术有限公司 | Method and device for eliminating touch trace of touch screen and computer readable storage medium |
| CN112102775B (en) * | 2020-09-11 | 2022-01-11 | Oppo广东移动通信有限公司 | Display device and brightness compensation method thereof |
| CN113298739B (en) * | 2021-07-27 | 2021-11-02 | 华兴源创(成都)科技有限公司 | Display repair method, computer device, and computer-readable storage medium |
| CN113990267B (en) * | 2021-11-02 | 2023-01-24 | Tcl华星光电技术有限公司 | Pixel brightness compensation method and device, storage medium and display panel |
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| US20060092183A1 (en) * | 2004-10-22 | 2006-05-04 | Amedeo Corporation | System and method for setting brightness uniformity in an active-matrix organic light-emitting diode (OLED) flat-panel display |
| CN101937653A (en) * | 2010-09-27 | 2011-01-05 | 彩虹集团公司 | Method for adjusting subregion brightness consistency |
| CN103021335B (en) * | 2012-12-14 | 2015-01-07 | 京东方科技集团股份有限公司 | OLED (organic light emitting diode) driving circuit, OLED display device and brightness adjusting method for OLED display device |
| CN103500566B (en) * | 2013-09-29 | 2016-10-05 | 京东方科技集团股份有限公司 | Display device, display brightness inequality improve device and ameliorative way |
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| CN104485073B (en) * | 2014-12-25 | 2017-02-22 | 广东威创视讯科技股份有限公司 | Brightness adjustment method and system for LED display screens |
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