CN114360445B - Display brightness adjusting method and device, electronic equipment and storage medium - Google Patents
Display brightness adjusting method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The application discloses a display brightness adjusting method, a device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a pixel compensation table of each compensation partition of the display screen; analyzing the pixel compensation table through a preset network model to obtain gray-scale compensation values of all pixel points in the display screen; and controlling the display screen to display according to the gray level compensation value. According to the embodiment of the application, the display screen is divided into a plurality of compensation subareas to be respectively compensated, then superposition and fusion are carried out, and distortion caused by that a single device compensates an oversized display screen or a curved display screen is reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to a display brightness adjusting method, a device, electronic equipment and a storage medium.
Background
The LCD display screen has various Mura due to the reasons of manufacturing process, driving, backlight and the like, so that the Mura is eliminated by using the demux in the industry at present, the product taste is improved, conventionally, the demux system is constructed to carry out photographing compensation on the whole display screen for a single camera, and when facing to more and more high-end curved-surface-shaped displays at present, the single camera is limited by larger distortion and can generate more compensation errors.
Disclosure of Invention
The embodiment of the application provides a display brightness adjusting method, a device, electronic equipment and a storage medium, which are used for dividing a display screen into a plurality of compensation partitions to respectively compensate, then carrying out superposition fusion, and reducing distortion caused by the compensation of a single device on an oversized display screen or a curved display screen.
In a first aspect, an embodiment of the present application provides a method for adjusting brightness of a display, including:
acquiring a pixel compensation table of each compensation partition of the display screen;
analyzing the pixel compensation table through a preset network model to obtain gray-scale compensation values of all pixel points in the display screen;
and controlling the display screen to display according to the gray level compensation value.
In some embodiments, the compensation partition includes a first compensation partition and a second compensation partition, and before the acquiring the pixel compensation table of each compensation partition of the display screen, the method includes:
dividing the display screen into a plurality of first compensation subareas, wherein any two adjacent first compensation subareas are partially overlapped;
the second compensation partition is divided between two adjacent first compensation partitions, the second compensation partition comprising an overlapping region of the two adjacent first compensation partitions.
In some embodiments, the analyzing the pixel compensation table through a preset network model to obtain the gray-scale compensation value of each pixel point in the display screen includes:
determining a first fusion function according to the two adjacent first compensation partitions and a preset first initial function;
determining a second fusion function according to the second compensation partition and a preset second initial function;
determining a third fusion function according to the first fusion function and the second fusion function;
and determining gray scale compensation values of all pixel points in the display screen according to the pixel compensation table and the third fusion function.
In some embodiments, the determining a first fusion function according to the two adjacent first compensation partitions and a preset first initial function includes:
acquiring pixel point distribution information of the overlapping area;
determining a first weight of each pixel point in the overlapping area according to the pixel point distribution information;
and determining a first fusion function according to the first weight and a preset first initial function.
In some embodiments, the determining a second fusion function according to the second compensated partition and a preset second initial function includes:
determining a second weight according to the region size of the second compensation partition;
and determining a second fusion function according to the second weight and a preset second initial function.
In some embodiments, the third fusion function includes at least one sub-function, the determining the third fusion function from the first fusion function and the second fusion function includes:
acquiring a target first fusion function corresponding to any two adjacent target first compensation partitions, a target second fusion function corresponding to a target second compensation partition between the two target first compensation partitions, and a target second weight of the target second compensation partition;
and determining a sub-function corresponding to the target second compensation partition according to the target first fusion function, the target second fusion function and the target second weight.
In some embodiments, before the acquiring the pixel compensation table of each compensation partition of the display screen, the method includes:
respectively compensating each pixel in the compensation partition to obtain a target compensation value of each pixel;
and creating the pixel compensation table of each compensation partition according to the target compensation value.
In a second aspect, the present application provides a display brightness adjustment device, including:
the information acquisition module is used for acquiring pixel compensation tables of all compensation partitions of the display screen;
the compensation value analysis module is in communication connection with the information acquisition module and is used for analyzing the pixel compensation table through a preset network model to obtain gray-scale compensation values of all pixel points in the display screen;
and the pixel display module is in communication connection with the compensation value analysis module and is used for controlling the display screen to display according to the gray level compensation value.
In some embodiments, the information obtaining module is further configured to divide the display screen into a plurality of the first compensation partitions, where any two adjacent first compensation partitions partially overlap; the second compensation partition is divided between two adjacent first compensation partitions, the second compensation partition comprising an overlapping region of the two adjacent first compensation partitions.
In some embodiments, the compensation value analysis module is further configured to determine a first fusion function according to the two adjacent first compensation partitions and a preset first initial function; determining a second fusion function according to the second compensation partition and a preset second initial function; determining a third fusion function according to the first fusion function and the second fusion function; and determining gray scale compensation values of all pixel points in the display screen according to the pixel compensation table and the third fusion function.
In some embodiments, the compensation value analysis module is further configured to obtain pixel distribution information of the overlapping region; determining a first weight of each pixel point in the overlapping area according to the pixel point distribution information; and determining a first fusion function according to the first weight and a preset first initial function.
In some embodiments, the compensation value analysis module is further configured to determine a second weight based on a region size of the second compensation partition; and determining a second fusion function according to the second weight and a preset second initial function.
In some embodiments, the compensation value analysis module is further configured to obtain a target first fusion function corresponding to any two adjacent target first compensation partitions, a target second fusion function corresponding to a target second compensation partition between the two target first compensation partitions, and a target second weight of the target second compensation partition, where the third fusion function includes at least one sub-function; and determining a sub-function corresponding to the target second compensation partition according to the target first fusion function, the target second fusion function and the target second weight.
In some embodiments, the information obtaining module is further configured to compensate each pixel in the compensation partition, so as to obtain a target compensation value of each pixel; and creating the pixel compensation table of each compensation partition according to the target compensation value.
In a third aspect, the present application provides an electronic device comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, the processor executing the computer program to implement the steps in any of the display brightness adjustment methods.
In a fourth aspect, the present application provides a storage medium having stored therein instructions for execution by a controller to implement the method of any one of the claims.
According to the display brightness adjusting method, the display brightness adjusting device, the electronic equipment and the storage medium, the display screen is divided into the plurality of compensation subareas, each compensation subarea is used as a compensation object to conduct compensation to obtain each pixel compensation table, then the pixel compensation tables with the associated compensation subareas are overlapped and fused through the preset network model, so that distortion can be reduced for gray-scale compensation values of the finally obtained pixel points, errors are reduced, and the final display effect is better.
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Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a flow chart of a method for adjusting brightness of a display according to an embodiment of the present application;
FIG. 2 is a schematic illustration of two adjacent first compensated partition overlap regions in an embodiment of the present application;
FIG. 3 is a schematic diagram of three partitions of a display screen in an embodiment of the present application
FIG. 4 is a schematic diagram of a feedforward neural network model in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a display brightness adjusting device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.
Referring to fig. 1, an embodiment of the present application provides a method for adjusting brightness of a display, including steps S101 to S103, which specifically include the following steps:
s101, acquiring a pixel compensation table of each compensation partition of the display screen.
Specifically, the display screen is divided into a plurality of compensation subareas to be respectively compensated, photographing compensation of a single camera on the whole display screen is avoided, larger distortion is caused, more compensation errors are generated, and then the pixel compensation tables of the plurality of compensation subareas are overlapped and fused to finally obtain proper pixel compensation values.
The display screen can be a curved screen, and the distortion of a larger area shot by the camera is serious due to the bending of the screen, or can be a non-curved screen, such as a large-size screen, and similarly, the compensation error of a larger area shot by the camera is larger.
The pixel compensation table is a compensation value of each pixel point obtained by taking each compensation partition in the display screen as a compensation object to compensate, and the display screen is divided into a plurality of compensation partitions to compensate respectively, so that the display screen is more refined and the final display effect is better.
In one embodiment, this step is preceded by: s201, respectively compensating each pixel in the compensation partition to obtain a target compensation value of each pixel; s202, creating the pixel compensation table of each compensation partition according to the target compensation value.
Specifically, each compensation partition is taken as a compensation object, and each pixel is compensated to obtain a target compensation value of each pixel, and the specific compensation mode is not limited in this embodiment. For example, photographing compensation is performed, sampling is performed on each compensation zone through different cameras, and then compensation is performed according to preset brightness to obtain target compensation values of each pixel. The preset brightness may be preset uniform and fixed brightness, or may be brightness of a certain pixel point in each compensation partition, so that preset brightness of different compensation partitions may be the same or different, and the embodiment is not limited specifically. And finally, creating a pixel compensation table of each compensation partition according to the target compensation value, wherein each pixel point in the pixel compensation table is associated with the corresponding target compensation value, namely, the corresponding target compensation value can be determined by combining the information of the pixel point and the pixel compensation table.
In one embodiment, the step includes: s301, dividing the display screen into a plurality of first compensation subareas, wherein any two adjacent first compensation subareas are partially overlapped; s302, dividing the second compensation subarea between two adjacent first compensation subareas, wherein the second compensation subarea comprises an overlapping area of the two adjacent first compensation subareas.
Specifically, the compensation partition includes a first compensation partition and a second compensation partition. The display screen is divided into a plurality of first compensation partitions, wherein the plurality of first compensation partitions may be one row and a plurality of columns, or may be a plurality of rows and a plurality of columns, and may be set based on parameters such as a size of the display screen, and the embodiment is not limited specifically.
Because the compensation of different compensation subareas is respectively carried out, the final compensation results among different compensation subareas are different due to the difference of factors such as the used compensation equipment, the adopted preset brightness and the like, any two adjacent first compensation subareas are partially overlapped, the overlapped parts are respectively compensated in the two adjacent first compensation subareas, and then the pixel compensation tables of the two adjacent first compensation subareas are respectively overlapped and fused based on the pixel points of the overlapped parts so as to be unified.
It should be noted that, the area size of the first compensation partition and the size of the overlapping area of any two adjacent first compensation partitions determine the accuracy of the preset network model after the overlapping and fusing of the two pixel compensation tables, so the setting may be performed according to the accuracy requirement, and the embodiment is not limited specifically.
Furthermore, if the pixel points of the overlapping area have a larger difference between the target compensation values of the two adjacent first compensation partitions, the two pixel compensation tables are overlapped and fused only according to the pixel points of the overlapping area of the two adjacent first compensation partitions, which may result in a larger deviation, and therefore, the second compensation partition is divided between the two adjacent first compensation partitions, and the second compensation partition includes the overlapping area of the two adjacent first compensation partitions, while the second compensation partition also includes a part of the two adjacent first compensation partitions, respectively. Similarly, the pixel points of each second compensation partition are respectively compensated.
Thus, after dividing the display screen, the compensation partition comprises at least two first compensation partitions and one second compensation partition, and the number of the first compensation partitions is one more than the number of the second compensation partitions.
In this embodiment, the display screen is divided into a plurality of compensation partitions to compensate respectively, and by selecting a compensation partition with a proper size, the problem that the compensation result error is larger due to overlarge compensation range or overlarge curvature change of a single device can be avoided. Meanwhile, by setting different compensation subareas (a first compensation subarea and a second compensation subarea), each compensation subarea can be effectively overlapped and fused, so that the display screen is accurately controlled.
S102, analyzing the pixel compensation table through a preset network model to obtain gray scale compensation values of all pixel points in the display screen.
Specifically, a preset network model is obtained by analyzing the division of each compensation partition in the display screen, and the pixel compensation tables of all the compensation partitions are input as the preset network model, wherein for a certain pixel point in the display screen, a plurality of corresponding target compensation values may exist in the pixel compensation tables of all the compensation partitions, the preset network model analyzes the pixel compensation tables to obtain gray-scale compensation values of all the pixel points in the display screen, and the gray-scale compensation values of all the pixel points are uniquely determined values.
In one embodiment, the step includes: s401, determining a first fusion function according to the two adjacent first compensation partitions and a preset first initial function; s402, determining a second fusion function according to the second compensation partition and a preset second initial function; s403, determining a third fusion function according to the first fusion function and the second fusion function; s404, determining gray-scale compensation values of all pixel points in the display screen according to the pixel compensation table and the third fusion function.
Specifically, since there is an overlapping area between every two adjacent first compensation partitions, and the pixel points of the overlapping area have target pixel compensation values in both the two pixel compensation tables, the compensation values of the pixel points of the overlapping area need to be determined, the first fusion function is determined according to the two adjacent first compensation partitions and the preset first initial function, and if the display screen is divided into a plurality of first compensation partitions, one first fusion function is corresponding to each of the two adjacent first compensation partitions. For example, the display screen is divided into a plurality of first compensating partitions 1, 3, 5 and 7, which are adjacent in sequence, and then the partitions 1 and 3 correspond to a first fusion function, the partitions 3 and 5 correspond to a first fusion function, and the partitions 5 and 7 correspond to a first fusion function.
In addition, since the pixel points of the second compensation partition have target pixel compensation values in the pixel compensation tables of two adjacent first compensation partitions partially overlapped with the second compensation partition, the pixel compensation tables of the second compensation partition need to be fused with the pixel compensation tables of the two adjacent first compensation partitions, and the second fusion function is determined according to the second compensation partition and a preset second initial function, and similarly, if the display screen is divided into a plurality of second compensation partitions, each second compensation partition corresponds to one second fusion function. For example, the display screen is divided into a plurality of first compensating subareas 1, 3, 5 and 7 which are adjacent in sequence, and correspondingly, a subarea 2 is divided between the subareas 1 and 3, a subarea 4 is divided between the subareas 3 and 5, and a subarea 6 is divided between the subareas 5 and 7, so that the subarea 2 corresponds to a second fusion function, the subarea 4 corresponds to a second fusion function, and the subarea 6 corresponds to a second fusion function.
And then determining a third fusion function by combining the first fusion function and the second fusion function, and determining gray-scale compensation values of all pixel points in the display screen according to the pixel compensation table and the third fusion function.
In one embodiment, step S401, determining a first fusion function according to the two adjacent first compensation partitions and a preset first initial function includes: s501, acquiring pixel point distribution information of the overlapped area; s502, determining a first weight of each pixel point in the overlapping area according to the pixel point distribution information; s503, determining a first fusion function according to the first weight and a preset first initial function.
Specifically, even if the display screen is divided into a plurality of first compensation partitions, the plurality of adjacent first compensation partitions correspond to a plurality of first fusion functions, and the analysis processes of the first fusion functions are the same, so that the analysis processes of the first fusion functions are described by taking any two adjacent first compensation partitions as an example.
Based on the existence of an overlapping region between two adjacent first compensation partitions, a preset first initial function is divided into two parts, one part is the overlapping region between the first compensation partitions, and the other part is a non-overlapping region, wherein in the preset first initial function, the compensation value of a pixel point of the non-overlapping region is uniquely determined, so that the compensation value in a pixel compensation table of the corresponding first compensation partition is still the compensation value, and in a final first fusion function, a corresponding weight can be set based on the precision requirement of a model.
The pixel points in the overlapping area have corresponding compensation values in the pixel compensation tables of the two adjacent first compensation partitions, so that the first weight of the pixel points needs to be acquired, and the effective compensation values of the pixel points are determined according to the compensation values in the pixel compensation tables of the two adjacent first compensation partitions. The first weight of a pixel point of the overlapping area is related to its position in the overlapping area, e.g. the closer a certain pixel point is to a certain first compensation partition, the corresponding first weight is biased towards the certain first compensation partition. Therefore, the pixel distribution information of the overlapping area is obtained, and the pixel distribution information is the position information of the pixel in the overlapping area, including but not limited to the number of rows and columns, the distance between the adjacent overlapping areas on two sides, and the like. Determining a first weight of each pixel point in the overlapping area according to the pixel point distribution information, as shown in fig. 2, wherein two adjacent first compensation partitions are partition 1 and partition 3, the overlapping area of the partition 1 and the partition 3 comprises 10 columns of pixel points, the 10 columns of pixel points in the overlapping area are sequentially set as 10 th column, 9 th column, 8 th column, 2 nd column and 1 st column along the extending direction of the partition 1 to the partition 3, and the first weights of the 10 th column to the 1 st column in the overlapping area are sequentially as follows: (10-1)/10=0.9, (9-1)/10=0.8, (1-1)/10=0. It should be noted that, the foregoing is illustrative for easy understanding, and should not be construed as limiting the present embodiment, and the determination manner of the first weight based on the pixel distribution information is not particularly limited.
In addition, since the respective first compensation partitions are compensated separately, the compensation modes for the same first compensation partition are the same, so that the compensation modes along the splicing direction of the compensation partitions, that is, the extending direction from one compensation partition to the other compensation partition in two adjacent first compensation partitions may not be the same, and the first weights of the pixel points in the same column or row in the direction perpendicular to the splicing direction are the same, and the first weights of the pixel points in each of the 1 st column to the 10 th column in the above distance are the same.
Determining a first fusion function according to the first weight and a preset first initial function, for example, dividing a display screen into two first compensation subareas 1 and 3, wherein a pixel compensation table of the subarea 1 is LUT1, a pixel compensation table of the subarea 3 is LUT3, and the first fusion function Z 1 The method comprises the following steps:
wherein the compensation value of the pixel points of the non-overlapping areas of the partition 1 and the partition 3 is the compensation value omega in the corresponding pixel compensation table of the first compensation partition i The first weight of the pixel point of the ith column (or ith row) of the overlapping area for the partition 1 and the partition 3.
In one embodiment, step S402, determining a second fusion function according to the second compensation partition and a preset second initial function includes: s601, determining a second weight according to the area size of the second compensation partition; s602, determining a second fusion function according to the second weight and a preset second initial function.
Specifically, since the area of the second compensation partition actually belongs to two adjacent first compensation partitions, the second compensation partition affects the recognition accuracy and speed of the preset network model, and the user may set the area of the second compensation partition differently according to different requirements, where if a plurality of second compensation partitions are divided in the display screen, the area sizes of the different second compensation partitions may be the same or different, and the area sizes of the second compensation partitions are not limited in this embodiment.
Determining a second weight based on the region size of the second compensated partition, e.g. two adjacent first compensated partitions being partition 1 and partition 3, with a second compensated partition 2 between partition 1 and partition 3, a second weight ω of partition 2 0 The method comprises the following steps: omega 0 ＝1/(1+e k*x ) Where e is a natural constant, x is an extension dimension of the second compensation partition along the extension direction of the partition 1 to the partition 3, and k is an adjustment parameter, which may be set according to a requirement of a model, or obtained through a data test, which is not specifically limited in this embodiment. Determining a second fusion function Z according to the second weight and a preset second initial function 2 ，Z 2 ＝ω 0 * LUT2, wherein the pixel compensation table of partition 2 is LUT2.
In one embodiment, step S403, determining a third fusion function according to the first fusion function and the second fusion function, where the third fusion function includes at least one sub-function, includes: s701, acquiring target first fusion functions corresponding to any two adjacent target first compensation partitions, target second fusion functions corresponding to a target second compensation partition between the two target first compensation partitions, and target second weights of the target second compensation partitions; s702, determining a sub-function corresponding to the target second compensation partition according to the target first fusion function, the target second fusion function and the target second weight.
Specifically, an overlapping area exists between any two adjacent first compensation partitions, and a second compensation partition including the overlapping area is divided between any two adjacent first compensation partitions, so that the compensation value of the pixel point of the overlapping area is related to all the three compensation partitions, and the compensation value of the pixel point of the overlapping area needs to be determined according to the pixel compensation tables of the three compensation partitions. Taking any two adjacent first compensation partitions and second compensation partitions in the middle as a function research object, wherein a third fusion function comprises at least one sub-function, each function research object corresponds to one function research object, namely, each second compensation partition corresponds to one sub-function, the number of the sub-functions contained in the third fusion function depends on the number of the compensation partitions divided by a display screen, the analysis processes of the sub-functions are the same, and the analysis process of one sub-function is described as an example.
The method for acquiring the target first fusion function corresponding to any two adjacent target first compensation partitions includes the same acquisition mode as that described in the above embodiment, and simultaneously acquiring the target second fusion function corresponding to the target second compensation partition between the two target first compensation partitions and the target second weight of the target second compensation partition, and similarly, the method for acquiring the target second fusion function and the target second weight is the same as that described in the above embodiment. Determining a sub-function Y, Y= (1-omega) corresponding to the target second compensation partition according to the target first fusion function, the target second fusion function and the target second weight 0 )*Z 1 +Z 2 ，
And S103, controlling the display screen to display according to the gray level compensation value.
Specifically, the pixel compensation tables are analyzed through a preset network model, namely, the pixel compensation tables of all compensation partitions are input into a third fusion function, so that gray-scale compensation values uniquely corresponding to all pixel points in the display screen are obtained, and finally, the display screen is controlled to display through the gray-scale compensation values, so that a uniform compensation effect is achieved, and errors and distortions are reduced.
In this embodiment, the display screen is divided into a plurality of compensation partitions, each compensation partition is used as a compensation object to compensate each pixel compensation table obtained, and then the pixel compensation tables with the associated compensation partitions are overlapped and fused, so that the gray-scale compensation value of each pixel point obtained finally can reduce distortion, reduce errors, and achieve a better final display effect.
The embodiment of the application provides a display brightness adjusting method, which comprises the following steps:
1. the curved display is divided into 1-N regions (N is greater than or equal to 3), as shown in fig. 3, which is a schematic diagram of 3 partitions, wherein the partitions 1 and 3 have one overlay region (overlapping region, dashed box region in fig. 3), the partitions 1 and 3 are first compensation partitions, the partition 2 is a second compensation partition, and the CCD1 (Charge coupled Device, charge coupled device, which may be referred to as a CCD image sensor), the CCD2 and the CCD3 respectively take a photo to compensate the partitions 1 and 2 and 3 of the display.
2. Each compensation partition is compensated to generate corresponding pixel compensation tables LUT1, LUT2 and LUT3.
3. LUT1, LUT2 and LUT3 are overlapped and fused by using a feedforward neural network model (FNN), model parameters are shown in figure 4, and the model parameters are divided into 3 layers altogether, wherein T1 is an input layer, T2 is an intermediate layer, T3 is an output layer, and omega is a weight function corresponding to an input matrix.
a. For input layers X1 (LUT 1), X3 (LUT 3), middle layer Z1 has a fusion function of:
the overlay region weight function omega takes a linear function, the slope is determined by the overlay region Width and the compensation value intensity, for example, the overlay region Width is Width, the starting point and ending point compensation values are y1 and y2, and omega= (y 1-y 2)/Width;
b. for the input layer, X2 (LUT 2), middle layer Z2, its fusion function is: z is Z 2 ＝ω 0 *LUT2，ω 0 ＝1/(1+e k *x )；
c. For intermediate layers Z1, Z2 and output layer Y (LUT), the fusion function is: y= (1- ω) 0 )*Z 1 +Z 2 。
The embodiment utilizes a Feedforward Neural Network (FNN) model to improve, forms a partition fusion Demura method applied to a curved surface MiniLED display, divides the curved surface MiniLED display into a plurality of areas, individually compensates each area, takes compensation data of each area as an input layer of the FNN, utilizes a network model of the FNN to output a group of compensation data finally through layer-by-layer data superposition and fusion.
In order to better implement the display brightness adjustment method in the embodiments of the present application, on the basis of the display brightness adjustment method, a display brightness adjustment device is further provided in the embodiments of the present application, as shown in fig. 5, a display brightness adjustment device 100 includes:
an information obtaining module 110, configured to obtain a pixel compensation table of each compensation partition of the display screen;
the compensation value analysis module 120 is in communication connection with the information acquisition module 110, and is configured to analyze the pixel compensation table through a preset network model, so as to obtain gray-scale compensation values of each pixel point in the display screen;
the pixel display module 130 is in communication connection with the compensation value analysis module 120, and is configured to control the display screen to display according to the gray-scale compensation value.
In some embodiments of the present application, the information obtaining module 110 is further configured to divide the display screen into a plurality of the first compensation partitions, where any two adjacent first compensation partitions partially overlap; the second compensation partition is divided between two adjacent first compensation partitions, the second compensation partition comprising an overlapping region of the two adjacent first compensation partitions.
In some embodiments of the present application, the compensation value analysis module 120 is further configured to determine a first fusion function according to the two adjacent first compensation partitions and a preset first initial function; determining a second fusion function according to the second compensation partition and a preset second initial function; determining a third fusion function according to the first fusion function and the second fusion function; and determining gray scale compensation values of all pixel points in the display screen according to the pixel compensation table and the third fusion function.
In some embodiments of the present application, the compensation value analysis module 120 is further configured to obtain pixel distribution information of the overlapping area; determining a first weight of each pixel point in the overlapping area according to the pixel point distribution information; and determining a first fusion function according to the first weight and a preset first initial function.
In some embodiments of the present application, the compensation value analysis module 120 is further configured to determine a second weight according to a region size of the second compensation partition; and determining a second fusion function according to the second weight and a preset second initial function.
In some embodiments of the present application, the compensation value analysis module 120 is further configured to obtain a target first fusion function corresponding to any two adjacent target first compensation partitions, a target second fusion function corresponding to a target second compensation partition between the two target first compensation partitions, and a target second weight of the target second compensation partition, where the third fusion function includes at least one sub-function; and determining a sub-function corresponding to the target second compensation partition according to the target first fusion function, the target second fusion function and the target second weight.
In some embodiments of the present application, the information obtaining module 110 is further configured to compensate each pixel in the compensation partition, so as to obtain a target compensation value of each pixel; and creating the pixel compensation table of each compensation partition according to the target compensation value.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In some embodiments of the present application, an electronic device is provided that includes one or more processors; a memory; and one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to perform the steps of the display brightness adjustment method described above. The steps of the display luminance adjustment method herein may be the steps of the display luminance adjustment method of each of the above embodiments.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing has described in detail the methods, apparatuses, electronic devices and computer readable storage medium for adjusting brightness of a display according to the embodiments of the present application, and specific examples have been applied to illustrate the principles and embodiments of the present invention, where the above description of the embodiments is only for helping to understand the methods and core ideas of the present invention; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present invention, the present description should not be construed as limiting the present invention in summary.
Claims (8)
1. A method for adjusting brightness of a display, comprising:
dividing the display screen into a plurality of first compensation subareas, wherein any two adjacent first compensation subareas are partially overlapped;
dividing a second compensation partition between two adjacent first compensation partitions, the second compensation partition comprising an overlapping region of the two adjacent first compensation partitions;
acquiring a pixel compensation table of each compensation partition of the display screen; the compensation partition includes a first compensation partition and a second compensation partition;
analyzing the pixel compensation table through a preset network model to obtain gray-scale compensation values of all pixel points in the display screen; the method specifically comprises the following steps: determining a first fusion function according to the two adjacent first compensation partitions and a preset first initial function; determining a second fusion function according to the second compensation partition and a preset second initial function; determining a third fusion function according to the first fusion function and the second fusion function; determining gray scale compensation values of all pixel points in the display screen according to the pixel compensation table and the third fusion function;
and controlling the display screen to display according to the gray level compensation value.
2. The display brightness adjustment method according to claim 1, wherein the determining a first fusion function according to the adjacent two first compensation partitions and a preset first initial function includes:
acquiring pixel point distribution information of the overlapping area;
determining a first weight of each pixel point in the overlapping area according to the pixel point distribution information;
and determining a first fusion function according to the first weight and a preset first initial function.
3. The display brightness adjustment method of claim 1, wherein the determining a second fusion function according to the second compensation partition and a preset second initial function comprises:
determining a second weight according to the region size of the second compensation partition;
and determining a second fusion function according to the second weight and a preset second initial function.
4. A method of adjusting brightness of a display according to claim 3 wherein the third fusion function comprises at least one sub-function, the determining the third fusion function from the first fusion function and the second fusion function comprising:
acquiring a target first fusion function corresponding to any two adjacent target first compensation partitions, a target second fusion function corresponding to a target second compensation partition between the two target first compensation partitions, and a target second weight of the target second compensation partition;
and determining a sub-function corresponding to the target second compensation partition according to the target first fusion function, the target second fusion function and the target second weight.
5. The method for adjusting brightness of a display according to claim 1, wherein before obtaining the pixel compensation table of each compensation section of the display screen, the method comprises:
respectively compensating each pixel in the compensation partition to obtain a target compensation value of each pixel;
and creating the pixel compensation table of each compensation partition according to the target compensation value.
6. A display brightness adjustment device, comprising:
the information acquisition module is used for acquiring pixel compensation tables of all compensation partitions of the display screen; dividing the display screen into a plurality of first compensation subareas, wherein any two adjacent first compensation subareas are partially overlapped; dividing a second compensation partition between two adjacent first compensation partitions, the second compensation partition comprising an overlapping region of the two adjacent first compensation partitions;
the compensation value analysis module is in communication connection with the information acquisition module and is used for analyzing the pixel compensation table through a preset network model to obtain gray-scale compensation values of all pixel points in the display screen; the method specifically comprises the following steps: determining a first fusion function according to the two adjacent first compensation partitions and a preset first initial function; determining a second fusion function according to the second compensation partition and a preset second initial function; determining a third fusion function according to the first fusion function and the second fusion function; determining gray scale compensation values of all pixel points in the display screen according to the pixel compensation table and the third fusion function;
and the pixel display module is in communication connection with the compensation value analysis module and is used for controlling the display screen to display according to the gray level compensation value.
7. An electronic device comprising a processor, a memory and a computer program stored in the memory and executable on the processor, the processor executing the computer program to perform the steps in the display brightness adjustment method of any one of claims 1 to 5.
8. A storage medium having stored therein a number of instructions for execution by a controller to implement the method of any one of claims 1 to 5.
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| KR20150048967A (en) * | 2013-10-28 | 2015-05-11 | 삼성디스플레이 주식회사 | Display device and compensation method for the same |
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