CN117975876A

CN117975876A - Display screen correction method, device, computer equipment and storage medium

Info

Publication number: CN117975876A
Application number: CN202410044027.4A
Authority: CN
Inventors: 许嘉坤; 黄斌; 李永杰; 林洺锋
Original assignee: Shenzhen Zhouming Technology Co Ltd
Current assignee: Shenzhen Zhouming Technology Co Ltd
Priority date: 2024-01-10
Filing date: 2024-01-10
Publication date: 2024-05-03

Abstract

The application relates to a display screen correction method, a display screen correction device, a display screen correction computer device, a display screen correction storage medium and a display screen correction computer program product. The method comprises the following steps: acquiring initial color gamut data, initial brightness data and initial correction data of a display screen in different gray scale ranges; obtaining correction data adjustment parameters in different gray scale ranges according to the initial color gamut data, the initial brightness data, the preset target color gamut data and the preset target brightness data in different gray scale ranges, wherein the correction data adjustment parameters comprise color gamut adjustment parameters, white balance adjustment parameters and brightness adjustment parameters; aiming at the initial correction data in each gray scale range, adopting correction data adjustment parameters corresponding to the current gray scale range to adjust so as to obtain target correction data in different gray scale ranges; for the initial color gamut data and the initial luminance data, correction is performed using target correction data corresponding to the current gradation range. By adopting the method, the accuracy and the correction efficiency of the target correction data can be improved.

Description

Display screen correction method, device, computer equipment and storage medium

Technical Field

The present application relates to the field of screen display technology, and in particular, to a display screen correction method, apparatus, computer device, storage medium, and computer program product.

Background

Along with the development of screen display technology, an LED (LIGHT EMITTING Diode light-emitting Diode) display screen is widely applied to production and life by people due to the advantages of energy conservation, environmental protection, excellent brightness display performance and the like. The LED display screen is formed by a plurality of lamp beads, when the LED display screen is actually used, the LED display screen is influenced by a plurality of objective factors, and the difference of brightness, chromaticity and the like is easy to exist among the lamp beads of the LED display screen, so that the display screen cannot achieve the expected display effect, and therefore the display screen needs to be corrected.

In the conventional technology, basic optical information such as brightness, chromaticity and the like of each pixel area on an LED display screen is generally collected, so that correction data of each pixel are further provided, and therefore, the LED display screen is corrected point by point, and the final display effect of the display screen is kept uniform.

However, in the current correction method, the accuracy of the obtained correction data is low, the LED display screen cannot be corrected accurately, and finally the display effect of the corrected display screen is poor. If the LED display screen can achieve the expected display effect when different video contents are expected to be played, the display screen needs to be corrected for multiple times, time and labor are wasted, and correction efficiency is low.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a display screen correction method, apparatus, computer device, computer-readable storage medium, and computer program product that can accurately and efficiently correct the above-described technical problems.

In a first aspect, the present application provides a display screen correction method. The method comprises the following steps:

Acquiring initial color gamut data, initial brightness data and initial correction data of a display screen in different gray scale ranges, wherein the initial correction data are obtained through consistency correction equipment;

Obtaining correction data adjustment parameters in different gray scale ranges according to the initial color gamut data, the initial brightness data, the preset target color gamut data and the preset target brightness data in different gray scale ranges, wherein the correction data adjustment parameters comprise color gamut adjustment parameters, white balance adjustment parameters and brightness adjustment parameters;

aiming at the initial correction data in each gray scale range, adjusting by adopting a color gamut adjustment parameter, a white balance adjustment parameter and a brightness adjustment parameter which correspond to the current gray scale range to obtain target correction data in different gray scale ranges;

and correcting the initial color gamut data and the initial brightness data in each gray scale range by adopting target correction data corresponding to the current gray scale range so that the corrected initial color gamut data is equal to the target color gamut data and the corrected initial brightness data is equal to the target brightness data.

In one embodiment, obtaining initial correction data for a display screen in different gray scale ranges includes:

Acquiring first correction data of a display screen under a first gray level, and correcting initial color gamut data and initial brightness data under the first gray level according to the first correction data, wherein the first gray level is the highest gray level;

Sequentially reducing the gray value of the display screen according to a preset step length;

Under the condition that the display screen is inconsistent, determining the current gray value as a second gray value, and acquiring second correction data under the second gray value;

Returning to the step of sequentially reducing the gray value of the display screen according to the preset step length until the gray value of the display screen is reduced to zero;

And obtaining initial correction data under different gray scale ranges based on the correction data under different gray scale values, wherein the initial correction data comprises the first correction data and the second correction data.

In one embodiment, the obtaining the correction data adjustment parameters in different gray scale ranges according to the initial color gamut data, the initial brightness data, the preset target color gamut data, and the preset target brightness data in different gray scale ranges includes:

Correcting the initial color gamut data and the initial brightness data according to the initial correction data for each gray scale range to obtain corrected first color gamut data and first brightness data;

Obtaining a color gamut conversion matrix according to the first color gamut data and the target color gamut data;

obtaining second brightness data after color gamut conversion according to the color gamut conversion matrix and the first brightness data;

obtaining a white balance conversion matrix according to the second brightness data and the target color gamut data;

Determining a brightness conversion matrix according to the white balance conversion matrix, the second brightness data and the target brightness data;

Obtaining correction data adjustment parameters in different gray scale ranges according to the color gamut conversion matrix, the white balance conversion matrix, the brightness conversion matrix and a preset limiting function;

the color gamut adjustment parameters include the color gamut conversion matrix, the white balance adjustment parameters include the white balance conversion matrix, and the luminance adjustment parameters include the luminance conversion matrix.

In one embodiment, the target color gamut data includes white point color coordinate data and trichromatic color coordinate data under the target color gamut;

the obtaining a white balance conversion matrix according to the second brightness data and the target color gamut data includes:

Determining trichromatic brightness proportion data according to the white point color coordinate data and the trichromatic color coordinate data;

determining a trichromatic brightness adjustment coefficient according to the second brightness data and the trichromatic brightness proportion data;

And constructing the white balance conversion matrix according to the three-color brightness adjustment coefficient.

In one embodiment, the correcting, for the initial color gamut data and the initial luminance data in each gray scale range, with the target correction data corresponding to the current gray scale range further includes:

Acquiring color gamut data and brightness data of a display screen in different gray scale ranges;

comparing the color gamut data in different gray scale ranges with the target color gamut data to obtain color gamut error data in different gray scale ranges;

under the condition that the color gamut error data in the current gray scale range is larger than a preset color gamut error threshold value, correcting the target correction data in the current gray scale range according to the color gamut data, the brightness data and the target color gamut data in the current gray scale range to obtain corrected target correction data in the current gray scale range;

And correcting the color gamut data and the brightness data in the current gray scale range according to the corrected target correction data in the current gray scale range so that the corrected color gamut data is equal to the target color gamut data and the corrected brightness data is equal to the target brightness data.

In one embodiment, the correcting the target correction data in the current gray scale range to obtain corrected target correction data in the current gray scale range includes:

Determining a white balance conversion matrix in the current gray scale range according to the color gamut data, the brightness data and the target color gamut data in the current gray scale range;

and correcting the target correction data in the current gray scale range according to the white balance conversion matrix in the current gray scale range to obtain corrected target correction data in the current gray scale range.

In one embodiment, the gamut adjustment parameters include a gamut conversion matrix, and the method further comprises:

Performing color gamut conversion on the initial correction data according to the color gamut conversion matrix to obtain a color gamut converted initial correction matrix;

judging that the lamp bead corresponding to the initial correction matrix is an abnormal lamp bead under the condition that at least one matrix element exists in the initial correction matrix and is smaller than a first target value or at least one matrix element exists in the initial correction matrix and is larger than a second target value;

obtaining the number of abnormal lamp beads of the abnormal lamp beads and the total number of lamp beads of the display screen;

And determining the color gamut coverage rate of the display screen according to the abnormal number of the lamp beads and the total number of the lamp beads.

In a second aspect, the application further provides a display screen correction device. The device comprises:

the data acquisition module is used for acquiring initial color gamut data, initial brightness data and initial correction data of the display screen in different gray scale ranges, wherein the initial correction data are obtained through consistency correction equipment;

The adjustment parameter determining module is used for obtaining correction data adjustment parameters in different gray scale ranges according to the initial color gamut data, the initial brightness data, the preset target color gamut data and the preset target brightness data in different gray scale ranges, wherein the correction data adjustment parameters comprise color gamut adjustment parameters, white balance adjustment parameters and brightness adjustment parameters;

The correction data adjustment module is used for adjusting the initial correction data in each gray scale range by adopting the color gamut adjustment parameter, the white balance adjustment parameter and the brightness adjustment parameter which correspond to the current gray scale range to obtain target correction data in different gray scale ranges;

And the correction module is used for correcting the initial color gamut data and the initial brightness data in each gray scale range by adopting target correction data corresponding to the current gray scale range so that the corrected initial color gamut data is equal to the target color gamut data and the corrected initial brightness data is equal to the target brightness data.

In a third aspect, the present application also provides a computer device. The computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to realize the steps in the display screen correction method embodiments.

In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the display screen correction method embodiments described above.

In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of the display screen correction method embodiments described above.

The display screen correction method, the display screen correction device, the computer equipment, the storage medium and the computer program product obtain the initial color gamut data, the initial brightness data and the initial correction data of the display screen in different gray scale ranges, and obtain the correction data adjustment parameters in different gray scale ranges according to the initial color gamut data, the initial brightness data, the preset target color gamut data and the preset target brightness data in different gray scale ranges, wherein the correction data adjustment parameters comprise color gamut adjustment parameters, white balance adjustment parameters and brightness adjustment parameters. Further, for the initial correction data of each gray scale range, the color gamut adjustment parameter, the white balance adjustment parameter and the brightness adjustment parameter corresponding to the current gray scale range are adopted for adjustment, so as to obtain target correction data under different gray scale ranges. And finally, correcting the initial color gamut data and the initial brightness data in each gray scale range by adopting target correction data corresponding to the current gray scale range so that the corrected initial color gamut data is equal to the target color gamut data and the corrected initial brightness data is equal to the target brightness data. According to the scheme, under each gray scale range, the initial correction data of the display screen are subjected to adjustment of three dimensions, namely color gamut adjustment, white balance adjustment and brightness adjustment, so that more accurate target correction data is finally obtained under different gray scale ranges after multi-dimensional parameter adjustment, the initial color gamut data and the initial brightness data are further corrected through the target correction data, the color gamut accuracy of the display screen in each gray scale range can be improved, the brightness balance and white balance performance of the display screen in each gray scale range are improved, the display screen is better corrected to the target color gamut and the target brightness, and the display effect of the display screen is improved. That is, the accuracy of the target correction data determined by the above-described scheme is high.

Drawings

FIG. 1 is a diagram of an application environment for a display screen correction method in one embodiment;

FIG. 2 is a flow chart of a display screen correction method according to an embodiment;

FIG. 3 is a flow diagram of determining initial correction data in one embodiment;

FIG. 4 is a flow chart of determining correction data adjustment parameters according to one embodiment;

FIG. 5 is a flowchart illustrating a method for determining correction data adjustment parameters according to another embodiment;

FIG. 6 is a flow diagram of correcting target correction data in one embodiment;

FIG. 7 is a flow chart of a method for correcting target correction data according to another embodiment;

FIG. 8 is a flow chart of color gamut self-test in one embodiment;

FIG. 9 is a flowchart of a display screen correction method according to a detailed embodiment;

FIG. 10 is a block diagram of a display screen correction device in one embodiment;

FIG. 11 is a block diagram showing a display screen correction device according to another embodiment;

FIG. 12 is a block diagram showing a display screen correction device according to still another embodiment;

Fig. 13 is an internal structural view of a computer device in one embodiment.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

The display screen correction method provided by the embodiment of the application can be applied to an application environment shown in fig. 1. The data acquisition end 102 is in communication connection with the control end 104, and the control end 104 may be a control end of a display screen control system. The data storage system may store data that the control terminal 104 needs to process and processed data. The data storage system may be integrated on the server 104 or may be located on a cloud or other network server. The data acquisition side 102 may include a consistency correction device, a color analyzer, and the like.

Specifically, the data acquisition end 102 may automatically acquire initial color gamut data, initial brightness data, and initial correction data of the display screen in different gray scale ranges, and send the above data to the control end 102 in real time. The control end 102 obtains correction data adjustment parameters in different gray scale ranges according to the initial color gamut data, the initial brightness data, the preset target color gamut data and the preset target brightness data in different gray scale ranges, wherein the correction data adjustment parameters comprise color gamut adjustment parameters, white balance adjustment parameters and brightness adjustment parameters. The control end 102 may adjust the initial correction data in each gray scale range by using the color gamut adjustment parameter, the white balance adjustment parameter, and the brightness adjustment parameter corresponding to the current gray scale range, so as to obtain the target correction data in different gray scale ranges. Then, the control end 102 corrects the display screen with the target correction data corresponding to the current gray scale range for the initial color gamut data and the initial luminance data in each gray scale range so that the corrected initial color gamut data is equal to the target color gamut data and the corrected initial luminance data is equal to the target luminance data.

The control end 104 may be implemented by an independent server or a server cluster formed by a plurality of servers.

In one embodiment, as shown in fig. 2, a display screen correction method is provided, and the method is applied to the control end 104 in fig. 1 for illustration, and includes the following steps:

S200, acquiring initial color gamut data, initial brightness data and initial correction data of the display screen in different gray scale ranges, wherein the initial correction data is obtained through consistency correction equipment.

Where a color gamut is a color space that includes a range of all possible colors that a device or system is capable of displaying or processing. The initial color gamut data refer to the color range which can be presented by the display screen before correction, the initial brightness data refer to the brightness level of the display screen in different gray scale ranges, and the initial correction data are directly acquired by the consistency correction equipment and comprise related parameter information for preliminary adjustment of the display screen.

For example, devices such as a colorimeter or a color analyzer can be adopted to measure the colors of the LED display screen in different gray scale ranges, so as to obtain initial color gamut data and initial brightness data; initial correction data of the LED display screen in different gray scale ranges can be acquired through the consistency correction device.

S400, obtaining correction data adjustment parameters in different gray scale ranges according to the initial color gamut data, the initial brightness data, the preset target color gamut data and the preset target brightness data in different gray scale ranges, wherein the correction data adjustment parameters comprise color gamut adjustment parameters, white balance adjustment parameters and brightness adjustment parameters.

The correction data adjustment parameter refers to a parameter for adjusting the initial correction data, so that the adjusted initial correction data can correct the initial color gamut data and the initial brightness data of the display screen to a level equal to the target color gamut data and the target brightness data respectively. In addition, the correction data adjustment parameters include at least three dimensional adjustments, namely a color gamut adjustment parameter, a white balance adjustment parameter and a brightness adjustment parameter. The color gamut adjusting parameters can adjust the color range which can be displayed by the LED display screen; the white balance adjustment parameters can adjust the color output of the LED display screen so that the white color can be neutral white under different light sources without receiving the influence of color cast; the brightness adjustment parameter can adjust the brightness level of the LED display screen to change the brightness level of the screen as a whole.

In general, the initial correction data of the LED display screen collected by the consistency correction device in different gray scale ranges is not accurate enough, and the initial color gamut data and the initial brightness data of the display screen cannot be corrected to the levels equal to the target color gamut data and the target brightness data respectively, so that the initial correction data also needs to be adjusted.

Specifically, the above adjustment parameters in different gray scale ranges may be calculated according to the initial color gamut data, the initial luminance data, the preset target color gamut data, and the preset target luminance data in different gray scale ranges using a preset algorithm or model.

S600, aiming at the initial correction data in each gray scale range, adjusting by adopting a color gamut adjusting parameter, a white balance adjusting parameter and a brightness adjusting parameter corresponding to the current gray scale range to obtain target correction data in different gray scale ranges.

After the correction data adjustment parameters are determined, the initial correction data can be adjusted by using the correction data adjustment parameters, so that target correction data in different gray scale ranges can be obtained.

It should be noted that, the initial correction data is adjusted by using the color gamut adjustment parameter, the white balance adjustment parameter, and the brightness adjustment parameter corresponding to the current gray scale range in each gray scale range, so as to ensure that the initial correction data is properly adjusted in each gray scale range.

S700, for the initial color gamut data and the initial luminance data in each gray scale range, correcting with the target correction data corresponding to the current gray scale range so that the corrected initial color gamut data is equal to the target color gamut data and the corrected initial luminance data is equal to the target luminance data.

By adopting the steps, the initial color gamut data and the initial brightness data of the display screen can be well corrected to the target color gamut data and the target brightness data respectively under each gray scale range through the target correction data adjusted by the correction data adjustment parameters.

The LED display screen may be controlled by a control terminal of the LED control system, for example. The control system consists of control software, a sending card and a receiving card. After the initial correction data is adjusted by the correction data adjustment parameters, the obtained target correction data can be stored in a memory or a correction data folder suggested under control software, and can be called and used at any time. For example, control software in the LED control system reads target correction data, the target correction data is distributed to corresponding receiving cards through the sending cards, the receiving cards correct the LED display screen according to the target correction data, and the consistency and uniformity of the LED display screen are improved.

According to the display screen correction method, the initial color gamut data, the initial brightness data and the initial correction data of the display screen in different gray scale ranges are obtained, and the correction data adjustment parameters in different gray scale ranges are obtained according to the initial color gamut data, the initial brightness data, the preset target color gamut data and the preset target brightness data in different gray scale ranges, wherein the correction data adjustment parameters comprise color gamut adjustment parameters, white balance adjustment parameters and brightness adjustment parameters. Further, for the initial correction data of each gray scale range, the color gamut adjustment parameter, the white balance adjustment parameter and the brightness adjustment parameter corresponding to the current gray scale range are adopted for adjustment, so as to obtain target correction data under different gray scale ranges. And finally, correcting the initial color gamut data and the initial brightness data in each gray scale range by adopting target correction data corresponding to the current gray scale range so that the corrected initial color gamut data is equal to the target color gamut data and the corrected initial brightness data is equal to the target brightness data. According to the scheme, under each gray scale range, the initial correction data of the display screen are subjected to adjustment of three dimensions, namely color gamut adjustment, white balance adjustment and brightness adjustment, so that more accurate target correction data is finally obtained under different gray scale ranges after multi-dimensional parameter adjustment, the initial color gamut data and the initial brightness data are further corrected through the target correction data, the color gamut accuracy of the display screen in each gray scale range can be improved, the brightness balance and white balance performance of the display screen in each gray scale range are improved, the display screen is better corrected to the target color gamut and the target brightness, and the display effect of the display screen is improved. That is, the accuracy of the target correction data determined by the above-described scheme is high.

In one embodiment, as shown in fig. 3, acquiring initial correction data of a display screen in different gray scale ranges includes:

s220, first correction data of the display screen under a first gray level value is obtained, and initial color gamut data and initial brightness data under the first gray level value are corrected according to the first correction data, wherein the first gray level value is the highest gray level value.

S240, sequentially reducing the gray value of the display screen according to the preset step length.

And S260, under the condition that the display screen is inconsistent, determining the current gray value as a second gray value, and acquiring second correction data under the second gray value.

S270, returning to the step of sequentially reducing the gray value of the display screen according to the preset step length until the gray value of the display screen is reduced to zero.

S280, obtaining initial correction data in different gray scale ranges based on the correction data in different gray scale values.

The first gray value is the highest gray value, and the initial correction data comprises first correction data and second correction data. The non-uniformity phenomenon includes differences in color, brightness or other visual characteristics exhibited by the LED display screen, which may be caused by uneven brightness of the lamp beads or color deviation.

For each gray value, the consistency correction device can collect initial correction data corresponding to the current gray value, however, in a small gray range, the same initial correction data can be used for correcting the color gamut and the brightness of the display screen, and the correction result can approximately meet the requirement of human eyes, namely, the LED display screen does not have obvious inconsistent phenomenon. Therefore, the purpose of this embodiment is to divide the complete gray scale into several gray scale ranges, each of which includes several gray scale values. In the same gray scale range, each gray scale value corresponds to the same initial correction data, and the initial correction data corresponding to different gray scale ranges are different.

For example, the control end may control the LED display screen to not turn on the correction function, output a first gray value, where the first gray value is 65535, and acquire first correction data by using the consistency correction device, where the first correction data may better correct the LED display screen under the first gray value. And then, correcting the LED display screen by using the first correction data, and observing the screen of the LED display screen through specific equipment to judge whether the screen is inconsistent at the moment. In addition, the screen of the LED display screen can be directly observed by human eyes so as to judge whether the screen is inconsistent or not.

And then, the control end controls the LED display screen to sequentially reduce the gray values from the first gray value according to a preset step length until the inconsistent phenomenon of the screen is detected, and under the condition that the current gray value is not 0, the gray value output at the moment is determined to be a second gray value, and second correction data are acquired. It can be understood that the first correction data is only suitable for consistency correction of the LED display screen in a gray scale range formed by the first gray scale value and the second gray scale value, when the gray scale value output by the LED display screen is smaller than or equal to the second gray scale value, the first correction data is used to correct the LED display screen, and inconsistency still occurs on the corrected screen, so that the LED display screen should be corrected by the second correction data.

Further, the LED display screen is continuously controlled to sequentially reduce the gray value according to the preset step length, and the steps are repeated, so that a plurality of correction data can be obtained until the gray value of the LED display screen is reduced to 0. By the above steps, initial correction data in different gray scale ranges can be obtained, wherein the initial correction data generally at least comprises first correction data and second correction data, for example, when the initial correction data only comprises the first correction data and the second correction data, the first correction data can be used for correcting the LED display screen in a state that the LED display screen is in a high gray scale, and the second correction data can be used for correcting the LED display screen in a state that the LED display screen is in a low gray scale.

In this embodiment, the gray output value of the LED display screen is controlled to be reduced from the highest gray value to 0 according to a preset step length, so that initial correction data in different gray ranges are collected, and adjustment is conveniently performed on the initial correction data in different gray ranges, so that the LED display screen can be accurately corrected in the whole gray range.

In one embodiment, as shown in fig. 4, S400 includes:

S410, correcting the initial color gamut data and the initial brightness data according to the initial correction data for each gray scale range to obtain corrected first color gamut data and first brightness data.

S420, obtaining a color gamut conversion matrix according to the first color gamut data and the target color gamut data.

S430, obtaining second brightness data after the color gamut conversion according to the color gamut conversion matrix and the first brightness data.

S440, obtaining a white balance conversion matrix according to the second brightness data and the target color gamut data.

S450, determining a brightness conversion matrix according to the white balance conversion matrix, the second brightness data and the target brightness data.

S460, obtaining correction data adjustment parameters in different gray scale ranges according to the color gamut conversion matrix, the white balance conversion matrix, the brightness conversion matrix and a preset limiting function.

Wherein the color gamut adjustment parameters include a color gamut conversion matrix, the white balance adjustment parameters include a white balance conversion matrix, and the luminance adjustment parameters include a luminance conversion matrix. The first color gamut data and the first brightness data are color gamut data and brightness data of the LED display screen after the LED display screen is corrected by initial correction data, and can be acquired through a color analyzer and other devices. The second brightness data is corresponding brightness data after the initial correction data of the LED display screen after the color gamut conversion is corrected.

The initial color gamut data and the initial luminance data may be corrected by the control system of the LED display screen, for example. Then, three colors of red, green and blue can be respectively displayed by the LED display screen through the control end of the control system of the LED display screen, and first color gamut data and first brightness data are respectively collected by a color analyzer, wherein the first color gamut data comprise color coordinates under the three colors, and the first brightness data comprise brightness corresponding to the three colors.

Wherein the first gamut data may be represented by a first gamut matrix, as follows:

in the method, in the process of the invention, As a first color gamut matrix, the color gamut matrix,、AndCorrecting the initial correction data for the LED display screen, and then integrating the color coordinates of the screen red under the first color gamut; in the same way, the processing method comprises the steps of,、AndAfter the LED display screen is corrected by the initial correction data, the color coordinates of the whole screen green under the first color gamut;、 And After the LED display screen is corrected by the initial correction data, the color coordinates of the whole screen blue color are corrected under the first color gamut.

Further, according to actual engineering requirements, the target color gamut data can be determined, and can be represented in a matrix form, namely the target color gamut matrixThe following is shown:

in the method, in the process of the invention, 、AndThe color coordinates of the whole screen red are expressed under the target color gamut of the LED display screen, and the three are added to be 1; same reason、AndRepresenting the color coordinates of the whole screen green under the target color gamut of the LED display screen;、 And And (5) representing the color coordinates of the whole blue color of the LED display screen under the target color gamut.

If only color gamut conversion is considered, aiming at any lamp bead in the LED display screenThe initial correction data corrected to the first color gamut is recorded asThe correction data corrected to the target color gamut is noted asThe association of the two can be expressed by the following formula:

The left and right sides of the equal sign in the formula (1) represent the initial color gamut data of the LED display screen, and may also be represented by an initial color gamut matrix. Knowing the first gamut matrix, the initial correction matrix, and the target gamut matrix, correction data for correcting the initial gamut matrix to the target gamut matrix can be derived, and a gamut conversion matrix can be further derived, as expressed in the following formula:

in the method, in the process of the invention, Represents the gamut conversion matrix.

In addition to the color gamut conversion, white balance conversion needs to be performed on each lamp bead of the LED display screen, which can be achieved through a white balance conversion matrix.

Specifically, from the color gamut conversion matrix and the first luminance data, second luminance data after color gamut conversion can be obtained. The first brightness data can be acquired through a color analyzer after the LED display screen is corrected by the initial correction data. The relational expression between the first luminance data, the second luminance data, and the color gamut conversion matrix is as follows:

wherein the first brightness data comprises 、And，、AndAnd respectively obtaining brightness values corresponding to the three colors of red, green and blue of the LED display screen after the LED display screen is corrected by the initial correction data. The second brightness data includes、And，、AndAnd respectively obtaining brightness values corresponding to three colors of red, green and blue of the LED display screen under the condition of color gamut conversion.Is a color gamut conversion matrix.

According to the second brightness data and the target color gamut data, brightness adjustment coefficients corresponding to the three colors of red, green and blue can be determined, and then a white balance conversion matrix is determined, and the white balance conversion matrix is recorded asThe expression is as follows:

Wherein, 、AndRespectively represent the brightness adjustment coefficients corresponding to red, green and blue.

Then, the brightness conversion needs to be performed on each lamp bead of the LED display screen, and the brightness conversion can be realized through a brightness conversion matrix.

Specifically, according to the white balance matrixAnd the second brightness data can be determined, wherein the relation expression is as follows, of the second brightness data of the LED display screen after the white balance adjustment:

Wherein, And the white point brightness of the LED display screen after the white balance adjustment is shown. The second brightness data includes、And，、AndAnd respectively obtaining brightness values corresponding to three colors of red, green and blue of the LED display screen under the condition of color gamut conversion. The white balance matrix comprises、And，、AndRespectively represent the brightness adjustment coefficients corresponding to red, green and blue.

The target luminance data includes white point luminance at the target luminanceFrom the second luminance data and the target luminance data, a luminance conversion matrix may be determined, denoted asThe acquisition mode is as follows:

in the method, in the process of the invention, Representing the luminance adjustment value, the luminance conversion matrix can be further represented as:

finally, according to the color gamut conversion matrix, the white balance conversion matrix and the brightness conversion matrix which are obtained through calculation and a preset limiting function, correction data adjustment parameters in different gray scale ranges can be determined. Illustratively, for each bead i of the LED display screen, a calibration initial data adjustment parameter for each bead is determined and formulated as follows:

in the method, in the process of the invention, For initial correction data, the initial correction data is first adjusted by multiplying the color gamut conversion matrix, the white balance conversion matrix and the brightness conversion matrix. Obtained at this timeNot the final target correction data, it is also necessary to further limit the acquisition of the target correction data according to a limiting function.

In particular, the method comprises the steps of,A matrix, which may be denoted 3*3, in the correction of LEDs, requires a limitation of nine matrix parameters of the matrix, a matrix parameter of less than 0 of the nine matrix parameters being determined as 0, a matrix parameter of greater than 1 being determined as 1, expressed by the formula:

Limiting function Expressed as:

The final target correction data is expressed as:

It should be noted that, under each gray scale range, the initial correction data of the LED display screen needs to be adjusted in the above manner to obtain the adjustment parameters of the correction data under different gray scale ranges, so as to obtain the target correction data under different gray scale ranges.

In this embodiment, the color gamut conversion matrix, the white balance conversion matrix, and the luminance conversion matrix in different gray scale ranges are obtained according to the initial color gamut data, the initial luminance data, the preset target color gamut data, and the preset target luminance data in different gray scale ranges, and the correction data adjustment parameters in different gray scale ranges are determined according to the color gamut conversion matrix, the white balance conversion matrix, the luminance conversion matrix, and the preset restriction function. Through the scheme, the three dimensions of color gamut conversion, white balance conversion and brightness conversion can be adjusted on the initial correction data under different gray scale ranges, so that the final target correction data can accurately carry out consistency correction on the LED display screen.

In one embodiment, as shown in fig. 5, S440 includes:

s442, determining trichromatic brightness proportion data according to the white point color coordinate data and the trichromatic color coordinate data;

s444, determining a trichromatic brightness adjustment coefficient according to the second brightness data and the trichromatic brightness proportion data;

s446, a white balance conversion matrix is constructed according to the trichromatic brightness adjustment coefficient.

With the above embodiments, the white balance conversion matrix may be determined from the second luminance data and the target color gamut data. The target color gamut data includes white point color coordinate data and trichromatic color coordinate data under the target color gamut, the white point color coordinate data may be represented as a white point color coordinate matrix, and the trichromatic color coordinate data may represent a trichromatic color coordinate matrix.

Specifically, white is mixed by three colors of red, green and blue, so that the color coordinate matrix of the white point under the target color gamut can satisfy the following relationship according to the three-color coordinate matrix:

in the method, in the process of the invention, A color coordinate matrix representing a white point,Representing a three-color coordinate matrix,The three-color brightness proportion data can be expressed as a three-color brightness proportion data matrix by using a matrix, and the brightness proportion relation corresponding to red, green and blue is expressed when the lamp beads in the LED display screen reach the appointed white point color coordinates. The three-color brightness proportion matrix can be determined through the steps.

Further, based on the above-described trichromatic luminance proportion matrix and the second luminance data, trichromatic luminance adjustment coefficients may be determined. Specifically, the formula is:

Wherein the second brightness data comprises 、And，、AndAnd respectively obtaining brightness values corresponding to three colors of red, green and blue of the LED display screen under the condition of color gamut conversion. The three-color brightness adjustment coefficient comprises、And，、AndRespectively representing a red brightness adjustment coefficient, a green brightness adjustment coefficient and a blue brightness adjustment coefficient, which can be specifically determined by the following formula:

Setting the maximum duty ratio value of the red brightness adjustment coefficient, the green brightness adjustment coefficient and the blue brightness adjustment coefficient as 1, obtaining the other two values and constructing a white balance conversion matrix:

in this embodiment, the three-color brightness ratio data under the target color gamut can be determined according to the white point color coordinates and the three-color coordinate data under the target color gamut, and then the ratio of the three colors of brightness of red, green and blue to be adjusted is determined according to the second brightness data, so as to finally construct and obtain the white balance conversion matrix. The white balance matrix obtained by the method can correct the LED display screen to the target color temperature, and compared with initial correction data, the corrected LED display screen can be better kept consistent and uniform.

In one embodiment, as shown in fig. 6, the method further comprises:

s820, obtaining color gamut data and brightness data of the display screen in different gray scale ranges.

S840, comparing the color gamut data in different gray scale ranges with the target color gamut data to obtain color gamut error data in different gray scale ranges.

S860, when the color gamut error data in the current gray scale is larger than the preset color gamut error threshold, the target correction data in the current gray scale is corrected according to the color gamut data, the brightness data and the target color gamut data in the current gray scale, and the corrected target correction data in the current gray scale is obtained.

S880, correcting the color gamut data and the brightness data in the current gray scale according to the corrected target correction data in the current gray scale so that the corrected color gamut data is equal to the target color gamut data and the corrected brightness data is equal to the target brightness data.

In practical application, after the target correction data is determined by the method in the embodiment, the target correction data is verified and the correction effect is observed when the LED display screen is in different gray scale ranges, so as to determine whether the target correction data can meet the correction requirement, i.e. the LED display screen is corrected to the target color gamut and the target brightness. And when the correction effect cannot meet the correction requirement, the target correction data is corrected, and the corrected target correction data can be used for final correction.

Specifically, the target correction data in different gray scale ranges are all sent to the receiving card, and the LED display screen is turned on to correct and output the first gray scale value. And controlling the LED display screen to reduce the gray value according to a preset step length until the gray value is reduced to a second gray value. In this process, if the error between the color gamut data of the LED display screen and the target color gamut data acquired by the corresponding device is greater than a preset color gamut error threshold, for example, the error between the white point color coordinates of the LED display screen and the target white point color coordinates is greater, or the color cast phenomenon of the LED display screen can be directly observed with naked eyes, at this time, the current gray value is determined as the third gray value.

That is, the third gradation value divides the gradation range constituted by the first gradation value and the second gradation value into two parts, and for the gradation range from the first gradation value to the third gradation value, correction can be continued using the target correction data corresponding to the gradation range constituted by the first gradation value and the second gradation value; for the gray scale range from the third gray scale value to the second gray scale value, the target correction data corresponding to the gray scale range formed by the first gray scale value and the second gray scale value needs to be corrected, and the target correction data corresponding to the gray scale range from the third gray scale value to the second gray scale value is obtained. Specifically, the target correction data in the current gray scale range may be corrected according to the color gamut data, the brightness data and the target color gamut data in the gray scale range from the third gray scale value to the second gray scale value, so as to obtain corrected target correction data in the current gray scale range.

The corrected target correction data may then be applied to the correction of the LED display screen. Further, the LED display screen is controlled to reduce the gray value from the third gray value according to a preset step length until the gray value is reduced to the second gray value. In this process, if the error between the color gamut data of the LED display screen and the target color gamut data acquired by the device is greater than a preset color gamut error threshold, for example, the error between the white point color coordinates of the LED display screen and the target white point color coordinates is greater, or when the color cast phenomenon of the LED display screen can be directly observed with naked eyes, the above correction steps are repeated. If the initial correction data of the LED display screen is not only the first correction data and the second correction data, that is, the number of gray scale ranges corresponding to the LED display screen is not only two, the same correction operation is performed for other gray scale ranges until the target correction data in each gray scale range passes the inspection.

In this embodiment, after the target correction data is determined, the target correction data is also checked in each gray scale range to check whether the target correction data can accurately correct the LED display screen to the target color gamut and the target luminance. And the target correction data which cannot be accurately corrected in each gray scale range is further corrected, so that the corrected target correction data has higher accuracy and can better complete the correction task.

In one embodiment, as shown in fig. 7, S860 includes:

s862, determining a white balance conversion matrix in the current gray scale range according to the color gamut data, the brightness data and the target color gamut data in the current gray scale range.

S864, correcting the target correction data in the current gray scale according to the white balance conversion matrix in the current gray scale, and obtaining corrected target correction data in the current gray scale.

By adopting the embodiment, the target correction data in the current gray scale range can be corrected according to the color gamut data, the brightness data and the target color gamut data in the gray scale range from the third gray scale value to the second gray scale value, so as to obtain corrected target correction data in the current gray scale range.

Specifically, color gamut data and luminance data in the current gray scale range, for example, color coordinates of three colors of red, green, and blue, and corresponding luminances, may be collected by a color analyzer or the like. Then, according to the color gamut data, the luminance data, and the target color gamut data, a white balance conversion matrix in the current gray scale range may be determined, where the white balance conversion matrix is the same as the white balance conversion matrix in the above embodiment, but the white balance conversion matrix in the present embodiment is used to correct the target correction data.

And correcting the target correction data in the current gray scale according to the white balance conversion matrix in the current gray scale, wherein the target correction data can be also expressed as a target correction matrix. Specifically, the target correction matrix may be multiplied by the white balance conversion matrix to complete the correction of the target correction matrix, so as to obtain corrected target correction data in the current gray scale range.

In this embodiment, through the white balance conversion matrix, when the color gamut error data in the current gray scale range is greater than the preset color gamut error threshold, the target correction data in the corresponding gray scale range is corrected, so that the corrected target correction data has better performance in the color gamut correction dimension, that is, the correction accuracy of the LED display screen is improved.

In one embodiment, as shown in fig. 8, the method further comprises:

S920, performing color gamut conversion on the initial correction data according to the color gamut conversion matrix to obtain a color gamut converted initial correction matrix.

S940, when at least one matrix element of the initial correction matrix is smaller than the first target value or at least one matrix element is larger than the second target value, the lamp bead corresponding to the initial correction matrix is judged to be an abnormal lamp bead.

S960, obtaining the number of abnormal lamp beads of the abnormal lamp beads and the total number of lamp beads of the display screen.

S980, determining the color gamut coverage rate of the display screen according to the abnormal number of the lamp beads and the total number of the lamp beads.

With the above embodiment, after the color gamut conversion matrix is determined, whether the corresponding lamp beads can be corrected to the target color gamut can be determined according to the color gamut conversion matrix. Specifically, for each lamp beadBy multiplying the color gamut conversion matrix, each lamp bead can be obtainedThe corresponding initial correction matrix after the color gamut conversion is expressed as follows:

in the method, in the process of the invention, Indicating lamp beadA corresponding color gamut conversion matrix is provided,Indicating lamp beadThe corresponding correction data is used to determine the correction data,Indicating lamp beadThe corresponding initial correction matrix is subjected to color gamut conversion and then the corresponding initial correction matrix is obtained. The initial correction matrix is a 3*3 matrix comprising 9 matrix parameters, ifOne of the 9 matrix parameters of (a) is less than the first target value, or one matrix parameter is greater than the second target value, then the lamp bead is consideredThe target color gamut which is required to be corrected cannot be achieved, namely the lamp bead cannot completely display the video content of the target color gamut, and the lamp bead is judged to be an abnormal lamp bead; otherwise, consider the lamp beadThe target color gamut video content can be fully displayed. For example, the first target value may be set to 0 and the second target value may be set to 1.

Further, the number of abnormal beads and the total number of the beads of the display screen can be counted, so that the color gamut coverage rate of the display screen is determined according to the number of the abnormal beads and the total number of the beads. Specifically, the determination formula of the color gamut coverage may be expressed as follows:

in the method, in the process of the invention, The color gamut coverage is represented as,Representing the number of normal beads, which can be obtained by subtracting the number of abnormal beads from the total number of the beads,Indicating the total number of beads.

When the color gamut coverage of the LED display screen is high, for example, the color gamut coverage reaches 99%, it can be considered that the LED display screen can display video content of the target color gamut. When the gamut coverage is low, for example, the gamut coverage is 50%, it can be considered that the LED display screen cannot display the video content of the target gamut. Besides calculating the color gamut coverage rate of the whole LED screen, the color gamut coverage rate in a single module can be calculated, the calculation formulas are the same, and when the color gamut coverage rate of some modules is lower, the modules can be replaced, so that the whole LED screen can display the video content of the target color gamut.

In this embodiment, according to the color gamut conversion matrix and the initial correction data, it may be determined whether the lamp beads in the LED display screen can be corrected to the target color gamut, and further, the color gamut coverage of the LED display screen may be calculated. The color gamut coverage rate obtained through the scheme can provide a judging basis for whether to replace the lamp beads or the modules of the LED display screen, so that the LED display screen can be corrected to the target color gamut, and the video content of the target color gamut can be displayed better.

In order to make a clearer description of the display screen correction method provided by the application, a specific embodiment and fig. 9 are described below, where the specific embodiment includes the following steps:

S801, acquiring initial color gamut data, initial brightness data and initial correction data of a display screen in different gray scale ranges, wherein the initial correction data is obtained through consistency correction equipment.

S802, obtaining a color gamut conversion matrix, a white balance conversion matrix and a brightness conversion matrix in different gray scale ranges according to initial color gamut data, initial brightness data, preset target color gamut data and preset target brightness data in different gray scale ranges, and obtaining correction data adjustment parameters in different gray scale ranges according to the color gamut conversion matrix, the white balance conversion matrix, the brightness conversion matrix and a preset limiting function.

S803, aiming at the initial correction data in each gray scale range, a color gamut conversion matrix, a white balance conversion matrix and a brightness conversion matrix corresponding to the current gray scale range are adopted for adjustment, so that target correction data in different gray scale ranges are obtained.

S804, for the initial color gamut data and the initial luminance data in each gray scale range, correction is performed using target correction data corresponding to the current gray scale range.

S805, when the color gamut correction error exists after correction, correcting the target correction data in the current gray scale according to the white balance conversion matrix in the current gray scale. And correcting the color gamut data and the brightness data in the current gray scale range according to the corrected target correction data.

S806, performing color gamut conversion on the initial correction data according to the color gamut conversion matrix to obtain an initial correction matrix after the color gamut conversion. And under the condition that at least one matrix element exists in the initial correction matrix and is smaller than the first target value or at least one matrix element exists in the initial correction matrix and is larger than the second target value, judging that the lamp bead corresponding to the initial correction matrix is an abnormal lamp bead.

S807, obtaining the abnormal number of the abnormal beads and the total number of the beads of the display screen, and determining the color gamut coverage rate of the display screen according to the abnormal number of the beads and the total number of the beads.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a display screen correction device for realizing the display screen correction method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation of one or more embodiments of the display screen correction device provided below may be referred to the limitation of the display screen correction method hereinabove, and will not be repeated herein.

In one embodiment, as shown in fig. 10, there is provided a display screen correction apparatus 900, comprising: a data acquisition module 910, an adjustment parameter determination module 920, a correction data adjustment module 930, and a correction module 940, wherein:

the data acquisition module 910 is configured to acquire initial color gamut data, initial brightness data, and initial correction data of the display screen in different gray scale ranges, where the initial correction data is obtained by the consistency correction device;

The adjustment parameter determining module 920 is configured to obtain correction data adjustment parameters in different gray scale ranges according to the initial color gamut data, the initial brightness data, the preset target color gamut data, and the preset target brightness data in different gray scale ranges, where the correction data adjustment parameters include a color gamut adjustment parameter, a white balance adjustment parameter, and a brightness adjustment parameter;

The correction data adjustment module 930 is configured to adjust, for the initial correction data in each gray scale range, the color gamut adjustment parameter, the white balance adjustment parameter, and the brightness adjustment parameter corresponding to the current gray scale range, to obtain target correction data in different gray scale ranges;

the correction module 940 is configured to correct, for the initial color gamut data and the initial luminance data in each gray scale range, the target correction data corresponding to the current gray scale range, so that the corrected initial color gamut data is equal to the target color gamut data, and the corrected initial luminance data is equal to the target luminance data.

In one embodiment, the data obtaining module 910 is further configured to obtain first correction data of the display screen at a first gray level, and correct, according to the first correction data, the initial color gamut data and the initial luminance data at the first gray level, where the first gray level is the highest gray level. And sequentially reducing the gray value of the display screen according to a preset step length. And under the condition that the display screen is inconsistent, determining the current gray value as a second gray value, and acquiring second correction data under the second gray value. And returning to the step of sequentially reducing the gray value of the display screen according to the preset step length until the gray value of the display screen is reduced to zero. Based on the correction data under different gray values, initial correction data under different gray ranges is obtained, wherein the initial correction data comprises first correction data and second correction data.

In one embodiment, the correction data adjustment module 930 is further configured to correct, for each gray scale range, the initial color gamut data and the initial luminance data according to the initial correction data, to obtain corrected first color gamut data and first luminance data. And obtaining a color gamut conversion matrix according to the first color gamut data and the target color gamut data. And obtaining second brightness data after the color gamut conversion according to the color gamut conversion matrix and the first brightness data. And obtaining a white balance conversion matrix according to the second brightness data and the target color gamut data. And determining a brightness conversion matrix according to the white balance conversion matrix, the second brightness data and the target brightness data. And obtaining correction data adjustment parameters in different gray scale ranges according to the color gamut conversion matrix, the white balance conversion matrix, the brightness conversion matrix and a preset limiting function. The color gamut adjustment parameters include a color gamut conversion matrix, the white balance adjustment parameters include a white balance conversion matrix, and the luminance adjustment parameters include a luminance conversion matrix.

In one embodiment, the target color gamut data includes white point color coordinate data and trichromatic color coordinate data under the target color gamut, the correction data adjustment module 930 is further configured to determine trichromatic luminance proportion data based on the white point color coordinate data and trichromatic color coordinate data, determine trichromatic luminance adjustment coefficients based on the second luminance data and trichromatic luminance proportion data, and construct a white balance conversion matrix based on the trichromatic luminance adjustment coefficients.

In one embodiment, as shown in fig. 11, the display screen correction device 900 further includes a correction module 950, where the correction module 950 is configured to obtain color gamut data and luminance data of the display screen in different gray scale ranges, compare the color gamut data and target color gamut data in different gray scale ranges, obtain color gamut error data in different gray scale ranges, and correct the target correction data in the current gray scale range according to the color gamut data, the luminance data and the target color gamut data in the current gray scale range when the color gamut error data in the current gray scale range is greater than a preset color gamut error threshold value, so as to obtain corrected target correction data in the current gray scale range. And correcting the color gamut data and the brightness data in the current gray scale range according to the corrected target correction data in the current gray scale range so that the corrected color gamut data is equal to the target color gamut data and the corrected brightness data is equal to the target brightness data.

In one embodiment, the correction module 950 is further configured to determine a white balance conversion matrix in the current gray scale range based on the color gamut data, the luminance data, and the target color gamut data in the current gray scale range. And correcting the target correction data in the current gray scale range according to the white balance conversion matrix in the current gray scale range to obtain corrected target correction data in the current gray scale range.

In one embodiment, as shown in fig. 12, the display screen correction device 900 further includes a color gamut self-checking module 960, configured to perform color gamut conversion on the initial correction data according to the color gamut conversion matrix, to obtain a color gamut converted initial correction matrix, and determine that a lamp bead corresponding to the initial correction matrix is an abnormal lamp bead when at least one matrix element exists in the initial correction matrix and is smaller than a first target value or at least one matrix element exists in the initial correction matrix and is larger than a second target value. Obtaining the number of abnormal lamp beads and the total number of lamp beads of the display screen, and determining the color gamut coverage rate of the display screen according to the number of abnormal lamp beads and the total number of lamp beads.

The various modules in the display screen correction device described above may be implemented in whole or in part by software, hardware, or a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, a computer device is provided, which may be a server, and the internal structure of which may be as shown in fig. 13. The computer device includes a processor, a memory, an Input/Output interface (I/O) and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing initial correction data and the like. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a display screen correction method.

It will be appreciated by those skilled in the art that the structure shown in FIG. 13 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the display screen correction method embodiments described above when the computer program is executed.

In one embodiment, a computer readable storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of the display screen correction method embodiments described above.

In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, implements the steps of the display screen correction method embodiments described above.

It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magneto-resistive random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (PHASE CHANGE Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. A method for correcting a display screen, the method comprising:

2. The method of claim 1, wherein obtaining initial correction data for the display screen at different gray scale ranges comprises:

3. The method according to claim 1, wherein the obtaining the correction data adjustment parameters in different gray scale ranges according to the initial color gamut data, the initial luminance data, the preset target color gamut data, and the preset target luminance data in different gray scale ranges includes:

4. The method of claim 3, wherein the target color gamut data comprises white point color coordinate data and trichromatic color coordinate data at a target color gamut;

5. The method according to any one of claims 1 to 4, wherein the correcting is performed with target correction data corresponding to a current gray scale range for the initial color gamut data and the initial luminance data for each gray scale range, and further comprising:

6. The method of claim 5, wherein the correcting the target correction data in the current gray scale range to obtain corrected target correction data in the current gray scale range comprises:

7. The method of any of claims 1 to 6, wherein the gamut adjustment parameters comprise a gamut conversion matrix, the method further comprising:

8. A display screen correction device, the device comprising:

9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 7 when the computer program is executed.

10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.