CN114327339A - LED display screen simulation correction display method and device and electronic equipment - Google Patents
LED display screen simulation correction display method and device and electronic equipment Download PDFInfo
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Abstract
The invention discloses a method and a device for simulating, correcting and displaying an LED display screen and electronic equipment, wherein the method comprises the following steps: determining a target gamma function and a target inverse gamma function according to screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table; determining a second gamma value according to the gray value to be corrected, the target gamma function and the correction times; determining a target gray scale value according to the second gamma value and a target inverse gamma function; and adjusting each lamp point to be a corresponding target gray scale value in a preset display interface so as to display the simulation correction effect of the LED display screen. The correction coefficient can be modified, the corresponding simulation display effect is displayed on the display interface, the correction coefficient does not need to be directly issued to the receiving card of the LED display screen, and the correction coefficient corresponding to the pixel result is issued to the receiving card of the LED display screen only when the simulation display effect in the display interface reaches an ideal state, so that the working efficiency of the correction process can be greatly improved, and the experience effect of a user can be improved.
Description
Technical Field
The invention relates to the technical field of correction of LED display screens, in particular to a method and a device for simulating, correcting and displaying an LED display screen and electronic equipment.
Background
The brightness and chromaticity correction of the LED display screen is to ensure that the display screen has good display effect, in the prior art, when no correction coefficient exists in the LED display screen or the correction effect is poor, the correction coefficient needs to be manually modified through correction software, and after the manual modification is completed, the correction software and the sending card are used for issuing the correction coefficient to a corresponding receiving card in the display screen. However, one problem with this process is: after a correction coefficient is manually modified, the correction coefficient needs to be issued once, which affects the correction efficiency to a certain extent, for a large-screen LED display screen, all receiving cards of the LED display screen need to be issued, the data volume is large, the manual modification times are more, namely, the modification time is more, and the correction efficiency is obviously affected. In view of the above problems, those skilled in the art need to find a solution to solve the above problems.
Disclosure of Invention
In order to overcome the problems in the related art, the invention discloses and provides a method and a device for simulating, correcting and displaying an LED display screen and electronic equipment.
According to a first aspect of the disclosed embodiments of the present invention, there is provided a method for displaying simulation correction on an LED display screen, the method comprising:
determining a target gamma function and a target inverse gamma function according to screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table;
taking a gray scale value to be corrected input by a user as an independent variable of a target gamma function, and acquiring a first gamma value;
multiplying the first gamma value by the correction coefficient of each lamp point in the LED display screen to obtain a second gamma value corresponding to each lamp point;
acquiring a target gray-scale value corresponding to each lamp point according to each second gamma value and a target inverse gamma function;
and adjusting the gray scale value of each lamp point to be a target gray scale value corresponding to the lamp point in a preset display interface so as to display the simulation correction effect of the LED display screen on the display interface.
Optionally, the determining the target gamma function and the target inverse gamma function according to the screen parameter of the LED display screen, the preset gamma table, and the preset inverse gamma table includes:
according toDetermining a first function expression by using screen parameters of the LED display screen and a preset gamma table, wherein the first function expression is as follows: y is xγWherein, gamma is a screen parameter, x is a gray scale value, and y is a gamma value;
determining a second function expression according to the screen parameters of the LED display screen and a preset inverse gamma table, wherein the second function expression is as follows: x ═ y1/γ；
According to a preset normalization processing strategy, performing normalization processing on the first function expression and the second function expression to obtain a target gamma function and a target inverse gamma function, wherein the target gamma function is
y ∈ (0,1), x ∈ (0, 255), the target inverse gamma function being
Wherein y ∈ (0,65536), and x ∈ (0, 1).
Optionally, the normalizing the first function expression and the second function expression according to a preset normalization processing policy to obtain a target gamma function and a target inverse gamma function includes:
selecting 256 gray-scale values from a preset gamma table, and carrying out normalization processing on the 256 gray-scale values according to the maximum gray-scale value to obtain each normalized gray-scale value;
acquiring 256 gamma values corresponding to the 256 gray-scale values, and performing normalization processing on the 256 gamma values according to the maximum gamma value to obtain each normalized gamma value;
carrying out normalization processing on the first function expression according to each normalized gray-scale value to obtain a target gamma function;
and carrying out normalization processing on the second function expression according to each normalized gamma value to obtain a target inverse gamma function.
Optionally, the 256 gray-scale values are 0,1,2,3,4, … …, 253,254,255, respectively.
Optionally, the obtaining a first gamma value by using the gray scale value to be corrected input by the user as an argument of the target gamma function includes:
acquiring a gray scale value to be corrected input by a user;
and substituting the gray-scale value to be corrected as an independent variable into the target gamma function, and acquiring a dependent variable of the target gamma function as the first gamma value.
Optionally, the adjusting, in a preset display interface, the gray scale value of each light point to the target gray scale value corresponding to the light point to display the simulation correction effect of the LED display screen on the display interface includes:
adjusting the gray scale value of each lamp point to a target gray scale value corresponding to the lamp point in a preset display interface to form a brightness simulation picture;
and displaying the brightness simulation picture in a preset display interface.
According to a second aspect of the disclosed embodiments of the present invention, there is provided a display device for simulating correction of an LED display screen, the device comprising:
the function acquisition module is used for determining a target gamma function and a target inverse gamma function according to the screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table;
the first gamma value acquisition module is connected with the function acquisition module, and acquires a first gamma value by taking a gray value to be corrected input by a user as an independent variable of a target gamma function;
the second gamma value acquisition module is connected with the first gamma value acquisition module, multiplies the first gamma value by the correction coefficient of each lamp point in the LED display screen, and acquires a second gamma value corresponding to each lamp point;
the target gray scale value acquisition module is connected with the second gamma value acquisition module and acquires a target gray scale value corresponding to each lamp point according to each second gamma value and a target inverse gamma function;
and the simulation correction display module is connected with the target gray scale value acquisition module, and adjusts the gray scale value of each lamp point to be the target gray scale value corresponding to the lamp point in a preset display interface so as to display the simulation correction effect of the LED display screen on the display interface.
Optionally, the function obtaining module includes:
the first function obtaining unit determines a first function expression according to screen parameters of the LED display screen and a preset gamma table, wherein the first function expression is as follows: y is xγWherein, gamma is a screen parameter, x is a gray scale value, and y is a gamma value;
the second function obtaining unit is connected with the first function obtaining unit and determines a second function expression according to the screen parameters of the LED display screen and a preset inverse gamma table, wherein the second function expression is as follows: x ═ y1/γ；
A target function obtaining unit connected with the second function obtaining unit, and performing normalization processing on the first function expression and the second function expression according to a preset normalization processing strategy to obtain a target gamma function and a target inverse gamma function, wherein the target gamma function is
y ∈ (0,1), x ∈ (0, 255), the target inverse gamma function being
Wherein y ∈ (0,65536), and x ∈ (0, 1).
Optionally, the first gamma value obtaining module includes:
the device comprises a to-be-corrected gray scale value acquisition unit, a to-be-corrected gray scale value acquisition unit and a correction unit, wherein the to-be-corrected gray scale value acquisition unit is used for acquiring a to-be-corrected gray scale value input by a user;
and the first gamma value acquisition unit is connected with the gray scale value to be corrected, substitutes the gray scale value to be corrected as an independent variable into the target gamma function, and acquires a dependent variable of the target gamma function as the first gamma value.
According to a third aspect of the disclosed embodiments of the present invention, there is provided an electronic device, comprising a processor, a communication interface, a memory, a communication bus, and a display unit, wherein the processor, the communication interface, the memory, and the display unit complete communication with each other through the communication bus;
a memory for storing processor-executable instructions;
a processor, configured to implement the steps of the method according to the first aspect of the embodiments of the disclosure when executing instructions stored in a memory;
and the display unit is used for displaying the simulation correction effect of the LED display screen through the display interface of the display unit.
In summary, the present disclosure relates to a method, an apparatus and an electronic device for displaying simulation correction of an LED display screen, wherein the method comprises: determining a target gamma function and a target inverse gamma function according to screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table; taking a gray scale value to be corrected input by a user as an independent variable of a target gamma function, and acquiring a first gamma value; multiplying the first gamma value by the correction coefficient of each lamp point in the LED display screen to obtain a second gamma value corresponding to each lamp point; acquiring a target gray-scale value corresponding to each lamp point according to each second gamma value and the target inverse gamma function; and adjusting the gray scale value of each lamp point to be a target gray scale value corresponding to the lamp point in a preset display interface so as to display the simulation correction effect of the LED display screen on the display interface. The correction coefficient can be modified, the corresponding simulation display effect is displayed on the display interface, the correction coefficient does not need to be directly issued to the receiving card of the LED display screen, and the correction coefficient corresponding to the pixel result is issued to the receiving card of the LED display screen only when the simulation display effect displayed on the display interface reaches an ideal state, so that the working efficiency of the correction process can be greatly improved, and the experience effect of a user can be improved.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a flow chart illustrating a method of simulating a corrected display for an LED display screen in accordance with an exemplary embodiment;
FIG. 2 is a flow chart of a function acquisition method according to the one shown in FIG. 1;
FIG. 3 is a flow chart of a gamma value acquisition method according to the method shown in FIG. 1;
FIG. 4 is a block diagram of an LED display screen analog correction display device according to an exemplary embodiment;
FIG. 5 is a block diagram of a function acquisition module according to the embodiment shown in FIG. 4;
FIG. 6 is a block diagram of a first gamma value obtaining module according to FIG. 4;
fig. 7 is a schematic structural diagram of an electronic device according to an exemplary embodiment.
Detailed Description
The following detailed description of the disclosed embodiments will be made in conjunction with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a flowchart illustrating a method for displaying a simulation correction of an LED display screen according to an exemplary embodiment, as shown in fig. 1, the method comprising:
in step 101, a target gamma function and a target inverse gamma function are determined according to screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table.
Illustratively, the screen parameter is a gamma value of the LED display screen, which is stored in the flash of the receiving card, and is adjustable in the LED display screen correction software, and reflects the different variation trends of the corresponding relationship between the gray scale value and the gamma value according to the different values of the screen parameter. It is to be understood that, since the screen parameter reflects the characteristic of the correspondence relationship between the gray-scale value and the gamma value, the screen parameter may be used as one of the following target gamma function and target inverse gamma function (the first functional expression and the second functional expression are the same) for defining the relationship between the independent variable and the dependent variable in the function. The values of the screen parameters are usually 2.2, 2.4, 2.6, 2.8, etc., and the specific steps of the correspondence between the gray-scale value and the gamma value and the simulation, correction and display of the LED display screen by using the correspondence are explained in the embodiment of the present disclosure by taking the screen parameter equal to 2.8 as an example.
In the embodiment of the disclosure, before correcting the LED display screen and simulating the correction effect, a target gamma function and a target inverse gamma function for obtaining the correction effect of the LED display screen need to be constructed first. The target gamma function and the target inverse gamma function are constructed through screen parameters, a gamma table and an inverse gamma table, wherein the gamma table, the inverse gamma table and the screen parameters are stored in a flash of a receiving card of the LED display screen.
Fig. 2 is a flowchart of a function obtaining method shown in fig. 1, and as shown in fig. 2, the step 101 includes:
in step 1011, a first function expression is determined according to the screen parameters of the LED display screen and a preset gamma table.
Wherein the first functional expression is: y is xγWherein, gamma is a screen parameter, x is a gray scale value, and y is a gamma value.
Illustratively, the gamma table is preset by a technician according to the screen specification and the display requirement and is stored in a receiving card of the LED display screen, each gray scale in the gamma table can have a certain gamma value correspondingly for adjusting the display effect of the display screen, and the inverse gamma table is similar. According to the corresponding relation between the gray scale value and the gamma value in the preset gamma table and the screen parameter, a first function expression which takes the gray scale value as an independent variable and the gamma value as a dependent variable and is related to the screen parameter can be obtained.
In step 1012, a second function expression is determined according to the screen parameters of the LED display screen and the preset inverse gamma table.
Wherein the second functional expression is: x ═ y1/γ。
For example, according to the corresponding relationship between the gray scale value and the gamma in the preset inverse gamma table and the screen parameter, a second function expression which takes the gray scale value as a dependent variable and the gamma value as an independent variable and is related to the screen parameter can be obtained.
In step 1013, the first function expression and the second function expression are normalized according to a preset normalization processing strategy to obtain a target gamma function and a target inverse gamma function.
Wherein the target gamma function is
y ∈ (0,1), x ∈ (0, 255), the target inverse gamma function being
Wherein y ∈ (0,65536), and x ∈ (0, 1).
Exemplarily, after the first function expression and the second function expression for representing the corresponding relationship between the gray-scale value and the gamma value are obtained, normalization processing needs to be performed on the first function expression and the second function expression to obtain a target gamma function and a target inverse gamma function, so as to display the correction effect of the LED display screen according to the target gamma function and the target inverse gamma function after the normalization processing in the following steps 102-105.
Specifically, 256 gray-scale values are selected from a preset gamma table, and the 256 gray-scale values are normalized according to the maximum gray-scale value to obtain each normalized gray-scale value; acquiring 256 gamma values corresponding to the 256 gray-scale values, and performing normalization processing on the 256 gamma values according to the maximum gamma value to obtain each normalized gamma value; carrying out normalization processing on the first function expression according to each gray-scale value after normalization processing to obtain a target gamma function; and carrying out normalization processing on the second function expression according to each normalized gamma value to obtain a target inverse gamma function.
Illustratively, 256 gray-scale values of 0,1,2,3,4, … …, 253,254 and 255 are selected from a preset gamma table, and the 256 gray-scale values are normalized according to the maximum gray-scale value 255Processing to obtain each gray scale value 0 after normalization processing,
1. substituting each gray-scale value after normalization processing into a first function expression to obtain a target gamma function
y ∈ (0,1), and x ∈ (0, 255). It can be understood that x in the above objective function is still 256 gray-scale values selected from the gamma table, and each gray-scale value after normalization passes through
And (4) showing. Similarly, gamma values 0-65536 corresponding to the 256 gray-scale values are obtained from a preset gamma table, and the 256 gamma values are normalized according to the maximum gamma value 65536 to obtain the normalized gamma values. Substituting each normalized gamma value into a second function expression to obtain a target inverse gamma function
Wherein y ∈ (0,65536), and x ∈ (0, 1).
In step 102, a gray scale value to be corrected input by a user is used as an argument of a target gamma function, and a first gamma value is obtained.
Illustratively, the gray-scale value to be corrected is a gray-scale value determined by observing that the display effect of the current LED display screen is not ideal after the user observes the display effect of the current LED display screen, and it can be understood that the gray-scale value to be corrected has any value in the range of 0,1,2,3,4, … …, 253,254, 255. In addition, for the LED display screen to be corrected, the gray scale value to be corrected input by the user may be one numerical value, which indicates that the gray scale values displayed by the R lamp point, the G lamp point, and the B lamp point in the LED display screen are equal, or three numerical values which indicate the gray scale values displayed by the R lamp point, the G lamp point, and the B lamp point, respectively.
Fig. 3 is a flowchart of a gamma value obtaining method shown in fig. 1, and as shown in fig. 3, the step 102 includes:
in step 1021, the gray scale value to be corrected input by the user is obtained.
For example, in the LED display screen simulation correction display method in the embodiments disclosed in the present invention, each step may be performed in correction software preset by a worker, a user may input a gray scale value to be corrected in the correction software, the correction software obtains the gray scale value to be corrected, and a target gray scale value corresponding to the gray scale value to be corrected is determined through the following steps.
In step 1022, the gray-scale value to be corrected is substituted into the target gamma function as an independent variable, and a dependent variable of the target gamma function is obtained as the first gamma value.
Exemplarily, substituting the gray-scale value to be corrected as the independent variable x into the target gamma function
The dependent variable y of the gamma function, i.e. the first gamma value, is obtained. It is understood that the gray scale values to be corrected have a value range of 0,1,2,3,4, … …, 253,254,255, and since the target gamma function is normalized, the dependent variable y is found to have a value between 0 and 1, i.e., the first gamma is also a value between 0 and 1.
In step 103, the first gamma value is multiplied by the correction coefficient of each lamp point in the LED display screen to obtain a second gamma value corresponding to each lamp point.
Illustratively, when brightness correction is required on the LED display screen, the correction coefficient of the lamp in the LED display screen is a brightness correction coefficient (i.e. a brightness correction coefficient matrix composed of 9 numerical values), and when brightness correction is required on the LED display screen, the correction coefficient of the lamp in the LED display screen is a brightness correction coefficient. And multiplying the correction coefficient of each lamp point by the first gamma value obtained in the step 102 to obtain a second gamma value. It will be appreciated that since the first gamma value is a value between 0 and 1 and the correction factor for the lamp is a value between 0 and 1, the second gamma value resulting from the multiplication of the first gamma value and the correction factor is a value between 0 and 1.
In step 104, a target gray level value corresponding to each lamp point is obtained according to each second gamma value and the target inverse gamma function.
Illustratively, expressions based on a target inverse gamma function
Since the second gamma value is a value between 0 and 1, and
is a value between 0 and 1, and therefore the second gamma value is taken as
And substituting the obtained value of x into the target inverse gamma function, and multiplying the obtained value of x by 255 to obtain a target gray-scale value. The target gray scale value is a gray scale value obtained after the LED display screen is corrected.
In step 105, the gray-scale value of each light point is adjusted to a target gray-scale value corresponding to the light point in a preset display interface, so as to display the simulation correction effect of the LED display screen on the display interface.
Exemplarily, the gray-scale value of each light point is adjusted to a target gray-scale value corresponding to the light point in a preset display interface to form a brightness simulation picture; and displaying the brightness simulation picture in a preset display interface. The display interface is an interface used for previewing a simulation correction effect in LED display screen correction software, the display interface comprises a piece of tablecloth (canvas), a function of color (R, G and B) exists in the tablecloth, and the value ranges of R, G and B are (0, 255). After the target gray-scale value corresponding to each light point is determined and the light points are adjusted, a picture (brightness simulation picture) displayed by the LED display screen can be drawn after each light point is adjusted to the target gray-scale value in the tablecloth, and the brightness simulation picture is displayed in the display interface. It can be understood that, if the user observes that the luminance and chrominance simulation picture displayed in the display interface meets the requirement, the target gray scale value corresponding to each light point in the luminance and chrominance simulation picture can be directly issued to the receiving card of the LED display screen, and the LED display screen receiving card receives the target gray scale value and adjusts the gray scale value of each light point in the LED display screen to the target gray scale value. Therefore, the correction coefficient is not required to be issued to the receiving card, the correction process of the LED display screen is simulated in the existing tablecloth, the simulated correction picture is displayed, and when a user observes that the simulated correction picture in the display interface meets the requirement (reaches an ideal state), the corresponding correction coefficient is issued to the receiving card of the LED display screen, so that the simulation correction effect is displayed on the display interface while the correction coefficient is modified, and the working efficiency in the correction process is greatly improved.
Fig. 4 is a block diagram illustrating a structure of an LED display screen analog correction display apparatus according to an exemplary embodiment, and as shown in fig. 4, the apparatus 400 includes:
the function obtaining module 410 is used for determining a target gamma function and a target inverse gamma function according to the screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table;
a first gamma value obtaining module 420, connected to the function obtaining module 410, for obtaining a first gamma value by using the gray scale value to be corrected input by the user as an independent variable of the target gamma function;
a second gamma value obtaining module 430, connected to the first gamma value obtaining module 420, for multiplying the first gamma value by the correction coefficient of each lamp point in the LED display screen to obtain a second gamma value corresponding to each lamp point;
a target gray-scale value obtaining module 440, connected to the second gamma value obtaining module 430, for obtaining a target gray-scale value corresponding to each lamp point according to each second gamma value and a target inverse gamma function;
the analog correction display module 450 is connected to the target gray scale value obtaining module 440, and adjusts the gray scale value of each light point to the target gray scale value corresponding to the light point in a preset display interface, so as to display the analog correction effect of the LED display screen on the display interface.
Fig. 5 is a block diagram illustrating a structure of a function obtaining module according to fig. 4, and as shown in fig. 5, the function obtaining module 410 includes:
the first function obtaining unit 411 determines a first function expression according to the screen parameter of the LED display screen and a preset gamma table, where the first function expression is: y is xγWherein, gamma is a screen parameter, x is a gray scale value, and y is a gamma value;
a second function obtaining unit 412, connected to the first function obtaining unit 411, for determining a second function expression according to the screen parameter of the LED display screen and a preset inverse gamma table, where the second function expression is: x ═ y1/γ；
A target function obtaining unit 413, connected to the second function obtaining unit 412, for performing normalization processing on the first function expression and the second function expression according to a preset normalization processing strategy to obtain a target gamma function and a target inverse gamma function, where the target gamma function is
y ∈ (0,1), x ∈ (0, 255), the target inverse gamma function being
Wherein y ∈ (0,65536), and x ∈ (0, 1).
Fig. 6 is a block diagram illustrating a first gamma value obtaining module according to fig. 4, where, as shown in fig. 6, the first gamma value obtaining module 420 includes:
a to-be-corrected gray scale value obtaining unit 421, which obtains a to-be-corrected gray scale value input by a user;
a first gamma value obtaining unit 422, connected to the to-be-corrected gray value obtaining unit 421, for substituting the to-be-corrected gray value as an independent variable into the target gamma function, and obtaining a dependent variable of the target gamma function as the first gamma value.
Fig. 7 is a schematic structural diagram of an electronic device according to an exemplary embodiment, as shown in fig. 7, including a processor 001, a communication interface 002, a memory 003, a communication bus 004 and a display unit 005, wherein the processor 001, the communication interface 002, the memory 003 and the display unit 005 are communicated with each other via the communication bus 004,
a memory 003 for storing a computer program;
a display unit 005 for displaying the correction effect of the LED display screen through a display interface of the display unit 005;
the processor 001 is configured to implement the above-described LED display screen simulation correction display method when executing the program stored in the memory 003, and the method includes:
determining a target gamma function and a target inverse gamma function according to screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table;
taking a gray scale value to be corrected input by a user as an independent variable of a target gamma function, and acquiring a first gamma value;
multiplying the first gamma value by the correction coefficient of each lamp point in the LED display screen to obtain a second gamma value corresponding to each lamp point;
acquiring a target gray-scale value corresponding to each lamp point according to each second gamma value and the target inverse gamma function;
and adjusting the gray scale value of each lamp point to be a target gray scale value corresponding to the lamp point in a preset display interface so as to display the simulation correction effect of the LED display screen on the display interface.
In summary, the present disclosure relates to a method, an apparatus and an electronic device for displaying simulation correction of an LED display screen, wherein the method comprises: determining a target gamma function and a target inverse gamma function according to screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table; taking a gray scale value to be corrected input by a user as an independent variable of a target gamma function, and acquiring a first gamma value; multiplying the first gamma value by the correction coefficient of each lamp point in the LED display screen to obtain a second gamma value corresponding to each lamp point; acquiring a target gray-scale value corresponding to each lamp point according to each second gamma value and the target inverse gamma function; and adjusting the gray scale value of each lamp point to be a target gray scale value corresponding to the lamp point in a preset display interface so as to display the correction effect of the LED display screen on the display interface. The correction coefficient can be modified, the corresponding simulation display effect is displayed on the display interface, the correction coefficient does not need to be directly issued to the receiving card of the LED display screen, and the correction coefficient corresponding to the pixel result is issued to the receiving card of the LED display screen only when the simulation display effect displayed on the display interface reaches an ideal state, so that the working efficiency of the correction process can be greatly improved, and the experience effect of a user can be improved.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A simulation correction display method for an LED display screen is characterized by comprising the following steps:
determining a target gamma function and a target inverse gamma function according to screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table;
taking a gray scale value to be corrected input by a user as an independent variable of a target gamma function, and acquiring a first gamma value;
multiplying the first gamma value by the correction coefficient of each lamp point in the LED display screen to obtain a second gamma value corresponding to each lamp point;
acquiring a target gray-scale value corresponding to each lamp point according to each second gamma value and a target inverse gamma function;
and adjusting the gray scale value of each lamp point to be a target gray scale value corresponding to the lamp point in a preset display interface so as to display the simulation correction effect of the LED display screen on the display interface.
2. The method for simulating, correcting and displaying the LED display screen according to claim 1, wherein the determining the target gamma function and the target inverse gamma function according to the screen parameters of the LED display screen, the preset gamma table and the preset inverse gamma table comprises:
determining a first function expression according to screen parameters of the LED display screen and a preset gamma table, wherein the first function expression is as follows: y is xγWherein, gamma is a screen parameter, x is a gray scale value, and y is a gamma value;
determining a second function expression according to the screen parameters of the LED display screen and a preset inverse gamma table, wherein the second function expression is as follows: x ═ y1/γ；
According to a preset normalization processing strategy, performing normalization processing on the first function expression and the second function expression to obtain a target gamma function and a target inverse gamma function, wherein the target gamma function is
y ∈ (0,1), x ∈ (0, 255), the target inverse gamma function being
Wherein y ∈ (0,65536), and x ∈ (0, 1).
3. The method for simulating, correcting and displaying the LED display screen according to claim 2, wherein the step of normalizing the first function expression and the second function expression according to a preset normalization processing strategy to obtain a target gamma function and a target inverse gamma function comprises the steps of:
selecting 256 gray-scale values from a preset gamma table, and carrying out normalization processing on the 256 gray-scale values according to the maximum gray-scale value to obtain each normalized gray-scale value;
acquiring 256 gamma values corresponding to the 256 gray-scale values, and performing normalization processing on the 256 gamma values according to the maximum gamma value to obtain each normalized gamma value;
carrying out normalization processing on the first function expression according to each normalized gray-scale value to obtain a target gamma function;
and carrying out normalization processing on the second function expression according to each normalized gamma value to obtain a target inverse gamma function.
4. The LED display screen simulation correction display method of claim 3, wherein the 256 gray-scale values are 0,1,2,3,4, … …, 253,254,255, respectively.
5. The method for simulating, correcting and displaying the LED display screen according to claim 1, wherein the step of obtaining the first gamma value by using the gray-scale value to be corrected input by the user as the argument of the target gamma function comprises:
acquiring a gray scale value to be corrected input by a user;
and substituting the gray-scale value to be corrected as an independent variable into the target gamma function, and acquiring a dependent variable of the target gamma function as the first gamma value.
6. The method for displaying the simulation correction of the LED display screen according to claim 1, wherein the adjusting the gray-scale value of each light point to the target gray-scale value corresponding to the light point in the preset display interface to display the simulation correction effect of the LED display screen on the display interface comprises:
adjusting the gray scale value of each lamp point to a target gray scale value corresponding to the lamp point in a preset display interface to form a brightness simulation picture;
and displaying the brightness simulation picture in a preset display interface.
7. An LED display screen simulation correction display device, characterized in that the device comprises:
the function acquisition module is used for determining a target gamma function and a target inverse gamma function according to the screen parameters of the LED display screen, a preset gamma table and a preset inverse gamma table;
the first gamma value acquisition module is connected with the function acquisition module, and acquires a first gamma value by taking a gray value to be corrected input by a user as an independent variable of a target gamma function;
the second gamma value acquisition module is connected with the first gamma value acquisition module, multiplies the first gamma value by the correction coefficient of each lamp point in the LED display screen, and acquires a second gamma value corresponding to each lamp point;
the target gray scale value acquisition module is connected with the second gamma value acquisition module and acquires a target gray scale value corresponding to each lamp point according to each second gamma value and a target inverse gamma function;
and the simulation correction display module is connected with the target gray scale value acquisition module, and adjusts the gray scale value of each lamp point to be the target gray scale value corresponding to the lamp point in a preset display interface so as to display the simulation correction effect of the LED display screen on the display interface.
8. The LED display screen simulation correction display device of claim 7, wherein the function obtaining module comprises:
the first function obtaining unit determines a first function expression according to screen parameters of the LED display screen and a preset gamma table, wherein the first function expression is as follows: y is xγWherein, gamma is a screen parameter, x is a gray scale value, and y is a gamma value;
the second function obtaining unit is connected with the first function obtaining unit and determines a second function expression according to the screen parameters of the LED display screen and a preset inverse gamma table, wherein the second function expression is as follows: x ═ y1/γ；
A target function obtaining unit connected with the second function obtaining unit according to presetThe normalization processing strategy is to perform normalization processing on the first function expression and the second function expression to obtain a target gamma function and a target inverse gamma function, wherein the target gamma function is
y ∈ (0,1), x ∈ (0, 255), the target inverse gamma function being
Wherein y ∈ (0,65536), and x ∈ (0, 1).
9. The LED display screen simulation correction display device of claim 7, wherein the first gamma value obtaining module comprises:
the device comprises a to-be-corrected gray scale value acquisition unit, a to-be-corrected gray scale value acquisition unit and a correction unit, wherein the to-be-corrected gray scale value acquisition unit is used for acquiring a to-be-corrected gray scale value input by a user;
and the first gamma value acquisition unit is connected with the gray scale value to be corrected, substitutes the gray scale value to be corrected as an independent variable into the target gamma function, and acquires a dependent variable of the target gamma function as the first gamma value.
10. The electronic equipment is characterized by comprising a processor, a communication interface, a memory, a communication bus and a display unit, wherein the processor, the communication interface and the memory are used for completing communication among the processor, the communication interface and the memory;
a memory for storing processor-executable instructions;
a processor for implementing the steps of the method of any one of claims 1 to 6 when executing instructions stored on a memory;
and the display unit is used for displaying the simulation correction effect of the LED display screen through the display interface of the display unit.
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