CN114360445A - 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 and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a pixel compensation table of each compensation partition of a display screen; analyzing the pixel compensation table through a preset network model to obtain a gray scale compensation value of each pixel point in the display screen; and controlling the display screen to display according to the gray scale compensation value. According to the embodiment of the application, the display screen is divided into the plurality of compensation zones to be compensated respectively, then superposition and fusion are carried out, and distortion caused by compensation of the oversize display screen or the curved surface display screen by single equipment is reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to a display brightness adjusting method and device, electronic equipment and a storage medium.
Background
LCD display screen can have various Mura because of reasons such as processing procedure, drive, backlight, at present industry commonly uses Demura to eliminate Mura, promotes product taste, and the conventionality is that Demura system architecture is the compensation of shooing to the monoblock display screen for single camera, and when facing present more and more high-end curved surface form's display, single camera is subject to great distortion and can produce more compensation errors.
Disclosure of Invention
The embodiment of the application provides a display brightness adjusting method and device, electronic equipment and a storage medium, which are used for dividing a display screen into a plurality of compensation subareas to respectively compensate, and then performing superposition fusion to reduce distortion caused by compensation of a single device on an overlarge display screen or a curved-surface 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 a display screen;
analyzing the pixel compensation table through a preset network model to obtain a gray scale compensation value of each pixel point in the display screen;
and controlling the display screen to display according to the gray scale compensation value.
In some embodiments, the obtaining the pixel compensation table of each compensation partition of the display screen comprises:
dividing the display screen into a plurality of first compensation subareas, wherein any two adjacent first compensation subareas are partially overlapped;
dividing the second compensation partition between two adjacent first compensation partitions, the second compensation partition including an overlapping area of the two adjacent first compensation partitions.
In some embodiments, the analyzing the pixel compensation table through a preset network model to obtain a 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 the gray scale compensation value of each pixel point 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 compensation 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 a third fusion function from the first fusion function and the second fusion function comprises:
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 subfunction 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 obtaining the pixel compensation table of each compensation partition of the display screen comprises:
respectively compensating each pixel in the compensation subarea 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 adjusting apparatus, comprising:
the information acquisition module is used for acquiring a pixel compensation table of each compensation partition 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 a gray scale compensation value of each pixel point 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 scale compensation value.
In some embodiments, the information obtaining module is further configured to divide the display screen into a plurality of first compensation partitions, where any two adjacent first compensation partitions partially overlap; dividing the second compensation partition between two adjacent first compensation partitions, the second compensation partition including an overlapping area 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 the gray scale compensation value of each pixel point 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 point 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 offset analysis module is further configured to determine a second weight based on the region size of the second compensation zone; 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 subfunction 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, respectively, 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, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps in any one 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 any of the methods described herein.
According to the method and the device for adjusting the brightness of the display, the electronic equipment and the storage medium, the display screen is divided into the compensation partitions, the compensation partitions are respectively used as compensation objects to compensate the obtained pixel compensation tables, and then the pixel compensation tables with the associated compensation partitions are overlapped and fused through the preset network model, so that the finally obtained gray scale compensation values of the pixel points can reduce distortion and errors, and the final display effect is better.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic flow chart of a method for adjusting brightness of a display according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an overlapping region of two adjacent first compensation zones 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 in 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 is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or 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 are as follows:
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 zones to be compensated respectively, so that the problem that a single camera performs photographing compensation on the whole display screen to cause large distortion to generate more compensation errors is avoided, and then the pixel compensation tables of the compensation zones are overlapped and fused to finally obtain a proper pixel compensation value.
The display screen can be a curved screen, the distortion of a larger area shot by the camera is serious due to the bending of the screen, or the display screen can be a non-curved screen, such as a large-size screen, and similarly, the compensation error of the larger area shot by the camera is larger.
The pixel compensation table is a compensation value of each pixel point obtained by compensating each compensation partition in the display screen as a compensation object, and the display screen is divided into a plurality of compensation partitions to be compensated respectively, so that the compensation 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, the pixel compensation table of each compensation partition is created according to the target compensation value.
Specifically, each compensation partition is taken as a compensation object, and each pixel in the compensation partition is compensated to obtain a target compensation value of each pixel, and a specific compensation mode of the compensation partition is not specifically limited in this embodiment. For example, photographing compensation is performed, each compensation partition is sampled by different cameras, and then compensation is performed according to preset brightness to obtain a target compensation value of each pixel. The preset brightness may be a preset uniform fixed brightness, or a brightness of a certain pixel point in each compensation partition, and therefore, the preset brightness of different compensation partitions may be the same or different, and this embodiment is not specifically limited. And finally, establishing 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, this step includes: s301, the compensation subareas comprise a first compensation subarea and a second compensation subarea, the display screen is divided into a plurality of first compensation subareas, and any two adjacent first compensation subareas are partially overlapped; and S302, dividing the second compensation partition between two adjacent first compensation partitions, wherein the second compensation partition comprises an overlapping area of the two adjacent first compensation partitions.
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 in rows and columns or in rows and columns, and may be set based on parameters such as the size of the display screen, and the embodiment is not particularly limited.
Because different compensation subareas are respectively compensated, and the difference of the compensation equipment used by the compensation equipment, the adopted preset brightness and other factors causes the difference of the final compensation results between different compensation subareas, any two adjacent first compensation subareas are partially overlapped, the overlapped part is respectively compensated in the two adjacent first compensation subareas, and then the pixel compensation tables of the two adjacent first compensation subareas are overlapped and fused based on the pixel points of the overlapped part respectively in the pixel compensation tables of the two adjacent first compensation subareas, so that the pixel compensation tables are unified.
It should be noted that the size of the area 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 two pixel compensation tables are superimposed and fused, and therefore, the accuracy may be set according to the accuracy requirement, which is not specifically limited in this embodiment.
In addition, if the difference between the target compensation values of the pixel points in the overlapping area is large in the two adjacent first compensation partitions, the two pixel compensation tables are overlapped and fused only according to the pixel points in the overlapping area of the two adjacent first compensation partitions, which may cause a large deviation, so that the second compensation partition is divided between the two adjacent first compensation partitions, the second compensation partition contains the overlapping area of the two adjacent first compensation partitions, and the second compensation partition also contains part of the two adjacent first compensation partitions. Similarly, the pixel points of each second compensation partition are compensated respectively.
Therefore, after the display screen is divided, the compensation partitions at least comprise two first compensation partitions and one second compensation partition, and the number of the first compensation partitions is one more than that of the second compensation partitions.
In this embodiment, the display screen is divided into a plurality of compensation partitions for compensation, and the compensation result error caused by an excessively large compensation range or an excessively large curvature change of a single device can be avoided by selecting a compensation partition with an appropriate size. Simultaneously through setting up different compensation subregion (first compensation subregion and second compensation subregion), can effectively overlap each compensation subregion and fuse to display screen accurate control.
S102, analyzing the pixel compensation table through a preset network model to obtain a gray scale compensation value of each pixel point in the display screen.
Specifically, a preset network model is obtained by analyzing based on the division of each compensation partition in the display screen, pixel compensation tables of all 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 compensation partitions, the preset network model analyzes the pixel compensation tables to obtain a gray scale compensation value of each pixel point in the display screen, and the gray scale compensation value of each pixel point is a uniquely determined value.
In one embodiment, this 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 a gray scale compensation value of each pixel point in the display screen according to the pixel compensation table and the third fusion function.
Specifically, because an overlap region exists between every two adjacent first compensation partitions, and a target pixel compensation value exists in the two pixel compensation tables corresponding to the pixel points in the overlap region, the compensation value of the pixel point in the overlap region needs to be determined, a first fusion function is determined according to two adjacent first compensation partitions and a preset first initial function, and if the display screen is divided into a plurality of first compensation partitions, every two adjacent first compensation partitions correspond to one first fusion function. For example, the display screen is divided into a plurality of first compensation partition areas 1, 3, 5 and 7 which are adjacent in sequence, then the partition area 1 and the partition area 3 correspond to a first fusion function, the partition area 3 and the partition area 5 correspond to a first fusion function, and the partition area 5 and the partition area 7 correspond to a first fusion function.
In addition, since the pixel points of the second compensation partition have the 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 and the pixel compensation tables of the two adjacent first compensation partitions need to be fused, a 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 compensation partition areas 1, 3, 5 and 7 which are adjacent in sequence, correspondingly, a partition area 2 is divided between the partition area 1 and the partition area 3, a partition area 4 is divided between the partition area 3 and the partition area 5, and a partition area 6 is divided between the partition area 5 and the partition area 7, then the partition area 2 corresponds to a second fusion function, the partition area 4 corresponds to a second fusion function, and the partition area 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 a gray scale compensation value of each pixel point in the display screen according to the pixel compensation table and the third fusion function.
In one embodiment, in 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 overlapping 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, a 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 any two adjacent first compensation partitions are taken as an example to explain the analysis process of the first fusion function.
Based on the existence of an overlapping region between two adjacent first compensation partitions, the 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 values of the pixels in the non-overlapping region are uniquely determined, so that the compensation values are still the compensation values in the pixel compensation table of the corresponding first compensation partition, and the corresponding weights can be set in the final first fusion function based on the accuracy requirement of the model.
The pixel points in the overlapping area need to acquire the first weight of the pixel point because the pixel compensation tables of the two adjacent first compensation partitions have corresponding compensation values, so that the effective compensation value of the pixel point is determined according to the compensation values in the pixel compensation tables of the two adjacent first compensation partitions. The first weight of the pixel points in the overlapping region is related to the position of the pixel points in the overlapping region, for example, the closer a certain pixel point is to a certain first compensation partition, the more the first weight is biased to the certain first compensation partition accordingly. Therefore, the pixel point distribution information of the overlapping area is obtained, and the pixel point distribution information is the position information of the pixel point in the overlapping area, including but not limited to the number of rows and columns, the distance from 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, two adjacent first compensation partitions are partition 1 and partition 3, the overlapping area of partition 1 and partition 3 includes 10 columns of pixel points, and along the extending direction from partition 1 to partition 3, 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, and then the first weights of the 10 th column to the 1 st column in the overlapping area are sequentially: (10-1)/10 ═ 0.9, (9-1)/10 ═ 0.8, and (1-1)/10 ═ 0. It should be noted that the first weight of each pixel in the overlapping area is determined according to the pixel distribution information, which is an example for facilitating understanding and should not be construed as a limitation to this embodiment, and the determination method of the first weight based on the pixel distribution information is not specifically limited in this embodiment.
In addition, since each first compensation partition compensates respectively, the compensation modes for the same first compensation partition are the same, so that the compensation modes may be different along the splicing direction of the compensation partitions, that is, the extension direction from one compensation partition to another compensation partition in two adjacent first compensation partitions, and the first weights of the pixels in one column or one row which are the same as the vertical direction of the splicing direction are the same, such that the first weights of the pixels in each column from the 1 st column to the 10 th column in the distance are the same.
Determining a first fusion function according to the first weight and a preset first initial function, for example, dividing the display screen into two first compensation partition partitions 1 and 3, the pixel compensation table for partition 1 being LUT1, the pixel compensation table for partition 3 being LUT3, and then the first fusion function Z1Comprises the following steps:
wherein, the compensation value of the pixel point of the non-overlapping region of the subarea 1 and the subarea 3 is the compensation value in the pixel compensation table of the corresponding first compensation subarea, omegaiThe first weight of the pixel point of the ith column (or ith row) in the overlapped area of the partition 1 and the partition 3.
In one embodiment, in 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, and the second compensation partition affects the recognition accuracy and speed of the preset network model, the user may set the area of the second compensation partition differently according to different requirements, wherein if a plurality of second compensation partitions are divided in the display screen, the sizes of the areas of the different second compensation partitions may be the same or different, and the size of the area of the second compensation partition is not specifically limited in this embodiment.
The second weight is determined according to the area size of the second compensation partition, e.g. two adjacent first compensation partitions are partition 1 and partition 3, between partition 1 and partition 3 is the second compensation partition 2, the second weight ω of partition 2 is0Comprises the following steps: omega0＝1/(1+ek*x) Wherein e is a natural constant, x is an extension size of the second compensation partition in the extension direction from the partition 1 to the partition 3, and k is an adjustment parameter, which may be set according to the requirement of the model or obtained through a data test, and this embodiment is not particularly limited. Determining a second fusion function Z according to the second weight and a preset second initial function2，Z2＝ω0LUT2, wherein the pixel compensation table for 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 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; s702, determining a subfunction 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 compensation values of pixel points of the overlapping area are all related to the three compensation partitions, and the compensation values of the pixel points of the overlapping area need to be determined according to pixel compensation tables of the three compensation partitions. Taking any two adjacent first compensation partitions and the second compensation partition between the two first compensation partitions as a function research object, wherein the third fusion function comprises at least one subfunction, each function research object corresponds to one function research object, that is, each second compensation partition corresponds to one subfunction, the number of subfunctions contained in the third fusion function depends on the number of compensation partitions divided by the display screen, the analysis processes of the subfunctions are the same, and the analysis process of one subfunction is described as an example below.
A target first fusion function corresponding to any two adjacent target first compensation partitions is obtained in the same manner as described in the above embodiment, and a target second fusion function corresponding to a target second compensation partition between two target first compensation partitions and a target second weight of the target second compensation partition are obtained at the same time. Determining a subfunction Y corresponding to the target second compensation partition according to the target first fusion function, the target second fusion function and the target second weight, wherein Y is (1-omega)0)*Z1+Z2，
And S103, controlling the display screen to display according to the gray scale 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, a gray scale compensation value uniquely corresponding to each pixel point in the display screen is obtained, and finally the display screen is controlled to display through the gray scale compensation value, so that a uniform compensation effect is achieved, and errors and distortion 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 perform compensation to obtain each pixel compensation table, and then the pixel compensation tables of each associated compensation partition are overlapped and fused, so that the finally obtained gray scale compensation value of each pixel point can reduce distortion and error, and the final display effect is better.
The embodiment of the application provides a method for adjusting the brightness of a display, 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, a 3-division schematic diagram is shown, where the division 1 and the division 3 have an Overlap region (overlapping region, dashed-line frame region in fig. 3), the division 1 and the division 3 are first compensation division, the division 2 is second compensation division, and the CCD1(Charge coupled Device, which may be referred to as a CCD image sensor), the CCD2, and the CCD3 respectively perform photographing compensation on the division 1 and the division 2 of the display.
2. Compensation is performed for each compensation partition, and corresponding pixel compensation tables LUT1, LUT2, and LUT3 are generated.
3. The LUT1, LUT2 and LUT3 are overlapped and fused by using a feed forward neural network model (FNN), the model parameters are divided into 3 layers as shown in fig. 4, wherein T1 is an input layer, T2 is an intermediate layer, T3 is an output layer, and ω is a weight function of a corresponding input matrix.
a. For input layers X1(LUT1), X3(LUT3), middle layer Z1, the fusion function is:
wherein, the Overlap region weight function ω is a linear function, the slope is determined by the Overlap region Width and the compensation value intensity, for example, if the Overlap region Width is Width, the compensation values of the starting point and the ending point are y1, and y2, then ω is (y 1-y 2)/Width;
b. for the input layer, X2(LUT2), the intermediate layer Z2, whose fusion function is: z2＝ω0*LUT2，ω0＝1/(1+ek *x)；
c. For intermediate layers Z1, Z2, and output layer y (lut), the fusion function is: y ═ 1- ω0)*Z1+Z2。
In the embodiment, a Feedforward Neural Network (FNN) model is used for improvement to form a partition fusion Demura method applied to a curved MiniLED display, the curved MiniLED display is divided into a plurality of regions, each region is independently compensated, compensation data of each region are used as an input layer of the FNN, and a group of compensation data is finally output by means of layer-by-layer data superposition and fusion by using the FNN network model.
In order to better implement the display brightness adjusting method in the embodiment of the present application, on the basis of the display brightness adjusting method, the embodiment of the present application further provides a display brightness adjusting apparatus, as shown in fig. 5, the display brightness adjusting apparatus 100 includes:
an information obtaining module 110, configured to obtain a pixel compensation table of each compensation partition of the display screen;
a compensation value analysis module 120, communicatively connected to the information acquisition module 110, configured to analyze the pixel compensation table through a preset network model to obtain a gray scale compensation value of each pixel point in the display screen;
and the pixel display module 130 is in communication connection with the compensation value analysis module 120 and is used for controlling 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 first compensation partitions, where any two adjacent first compensation partitions are partially overlapped; dividing the second compensation partition between two adjacent first compensation partitions, the second compensation partition including an overlapping area 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 the gray scale compensation value of each pixel point 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 distribution information of pixel points in 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 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 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 subfunction 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 respectively compensate 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 the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In some embodiments of the present application, there is provided an electronic device comprising one or more processors; a memory; and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to perform the steps of the display brightness adjustment method. The steps of the display brightness adjusting method herein may be steps in the display brightness adjusting methods of the various embodiments described above.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The foregoing describes in detail a method, an apparatus, an electronic device, and a computer-readable storage medium for adjusting brightness of a display provided in an embodiment of the present application, and a specific embodiment is applied in the present application to explain the principle and the implementation of the present invention, and the description of the foregoing embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for adjusting the brightness of a display is characterized by comprising the following steps:
acquiring a pixel compensation table of each compensation partition of a display screen;
analyzing the pixel compensation table through a preset network model to obtain a gray scale compensation value of each pixel point in the display screen;
and controlling the display screen to display according to the gray scale compensation value.
2. The method of adjusting brightness of a display according to claim 1, wherein the compensation partition comprises a first compensation partition and a second compensation partition, and the obtaining of the pixel compensation table of each compensation partition of the display screen comprises:
dividing the display screen into a plurality of first compensation subareas, wherein any two adjacent first compensation subareas are partially overlapped;
dividing the second compensation partition between two adjacent first compensation partitions, the second compensation partition including an overlapping area of the two adjacent first compensation partitions.
3. The method of claim 2, wherein the analyzing the pixel compensation table through a predetermined network model to obtain the gray-scale compensation value of each pixel in the display screen comprises:
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 the gray scale compensation value of each pixel point in the display screen according to the pixel compensation table and the third fusion function.
4. The method for adjusting brightness of a display according to claim 3, wherein the determining a first fusion function according to the two adjacent first compensation sections and a preset first initial function comprises:
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.
5. The method for adjusting brightness of a display according to claim 3, wherein the determining a second fusion function according to the second compensation partition and a second predetermined 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.
6. The method of claim 5, wherein the third fusion function comprises at least one sub-function, and wherein determining the third fusion function based on the first fusion function and the second fusion function comprises:
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 subfunction corresponding to the target second compensation partition according to the target first fusion function, the target second fusion function and the target second weight.
7. The method of adjusting brightness of a display according to claim 1, wherein the obtaining a pixel compensation table for each compensation partition of the display screen comprises:
respectively compensating each pixel in the compensation subarea 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.
8. A display brightness adjustment apparatus, comprising:
the information acquisition module is used for acquiring a pixel compensation table of each compensation partition 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 a gray scale compensation value of each pixel point 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 scale compensation value.
9. An electronic device, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the display brightness adjustment method according to any one of claims 1 to 7.
10. A storage medium having stored therein instructions for execution by a controller to implement the method of any one of claims 1 to 7.
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