CN117475885A

CN117475885A - Correction coefficient determination method, apparatus, device, storage medium, and program product

Info

Publication number: CN117475885A
Application number: CN202311551060.8A
Authority: CN
Inventors: 杨明; 曾志鹏
Original assignee: Shenzhen Zhouming Technology Co Ltd
Current assignee: Shenzhen Zhouming Technology Co Ltd
Priority date: 2023-11-17
Filing date: 2023-11-17
Publication date: 2024-01-30

Abstract

The present application relates to a correction coefficient determination method, apparatus, device, storage medium, and program product. The method comprises the following steps: acquiring images to be processed of a display screen to be corrected under different color channels; the display screen in the image to be processed is in a lighting state; the display screen is spliced by different display units; acquiring the brightness of the spliced lamp beads in each display unit in the image to be processed under different color channels; the spliced lamp beads are lamp beads positioned in the spliced area of the display unit; according to the unit brightness of different display units, determining the display screen brightness of the display screen under different color channels; and determining a correction coefficient for correcting the brightness of the display screen under the corresponding color channel according to the brightness of the spliced lamp beads in each display unit under the different color channels and the brightness of the display screen under the corresponding color channel. The method can improve the determination efficiency of the correction coefficient, the accuracy and consistency of the determination result.

Description

Correction coefficient determination method, apparatus, device, storage medium, and program product

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a correction coefficient determining method, apparatus, device, storage medium, and program product.

Background

The LED (Light Emitting Diode ) display screen is formed by splicing display units, and lamp beads (namely, light emitting diodes) in different display units are sequentially arranged. In the display process of the display screen, light interference phenomenon can be generated due to different seam widths at the seams and the distances between the lamp beads, and bright and dark lines with different brightness can be generated at the seams of the display unit and the central heat dissipation performance of the display unit, so that the display effect is affected.

In the conventional art, the bright and dark lines of the screen are generally corrected based on correction coefficients. In the process of determining the correction coefficient, the correction coefficient is determined manually for all the bright and dark lines one by one in a conventional mode, so that the workload is heavy, the efficiency is low, the coefficient precision is influenced by the artificial factors, and the data consistency is poor.

Disclosure of Invention

Based on this, it is necessary to provide a correction coefficient determination method, apparatus, device, storage medium and program product for solving the above-mentioned technical problems, so as to improve the determination efficiency of the correction coefficient while ensuring the accuracy and consistency of the determination result of the correction coefficient.

In a first aspect, the present application provides a correction factor determining method, including:

Acquiring images to be processed of a display screen to be corrected under different color channels; wherein the display screen in the image to be processed is in a lighting state; the display screen is spliced by different display units;

acquiring the brightness of the spliced lamp beads in each display unit in the image to be processed under different color channels; the spliced lamp beads are lamp beads positioned in a spliced area of the display unit;

determining the brightness of the display screen under different color channels according to the unit brightness of the different display units;

and determining a correction coefficient for correcting the brightness of the display screen under the corresponding color channel according to the brightness of the spliced lamp beads in each display unit under the different color channels and the brightness of the display screen under the corresponding color channel.

In one embodiment, the determining the display screen brightness of the display screen under different color channels according to the unit brightness of the different display units includes: for any color channel, determining the unit brightness of the corresponding display unit under the color channel according to the central bead brightness of the central bead corresponding to different display units under the color channel; and determining the brightness of the display screen under the color channel according to the unit brightness of different display units under the color channel.

In one embodiment, the determining the unit brightness of the corresponding display unit under the color channel according to the central bead brightness of the central bead corresponding to the different display units under the color channel includes: and aiming at any display unit, taking the average value of the brightness of the central lamp bead of the display unit under the color channel as the unit brightness of the corresponding display unit under the color channel.

In one embodiment, the determining the display screen brightness of the display screen under the color channel according to the unit brightness of different display units under the color channel includes: and taking the average value of the unit brightness of different display units under the color channel as the display screen brightness of the display screen under the corresponding color channel.

In one embodiment, the obtaining the brightness of the spliced beads in each display unit in the image to be processed under the channels of different colors includes: determining a display screen image in the image to be processed; according to the image size of the display screen image and the display screen size of the display screen, establishing corresponding relations between different pixel points in the display screen image and different lamp beads in the display screen; and determining the brightness of the spliced lamp beads in each display unit in the display screen image under different color channels according to the corresponding relation.

In one embodiment, the determining the display screen image in the image to be processed includes: identifying initial contours of display screens in images to be processed under different color channels; determining a target contour of a display screen according to initial contours of the display screen under different color channels; and determining the display screen image based on the target outline of the display screen.

In one embodiment, the determining the target contour of the display screen according to the initial contour of the display screen under different color channels includes: and determining the target contour of the display screen according to the contour distribution conditions of the initial contours of the display screen under different color channels.

In one embodiment, the determining the target contour of the display screen according to the contour distribution condition of the initial contour of the display screen under different color channels includes: determining contour vertexes positioned in the same vertex area according to contour distribution conditions of initial contours of the display screen in different color channels; selecting a target vertex under a corresponding vertex area from the contour vertices under the vertex areas according to the position distribution of the contour vertices under any vertex area; and determining the target outline of the display screen according to the target vertexes in the different vertex areas.

In one embodiment, the selecting a target vertex under the corresponding vertex area from the vertices of the contour under the vertex area includes: and selecting a contour vertex positioned outside the display unit from the contour vertices under the vertex areas as a target vertex under the corresponding vertex area.

In one embodiment, the determining the display screen image based on the target contour of the display screen includes: and if the contour shape of the target contour is matched with the display screen shape of the display screen, taking the image corresponding to the target contour as the display screen image.

In one embodiment, the display screen is polygonal in shape; the method further comprises the steps of: determining included angle description information of each target vertex in the target profile; and if the included angle description information of each target vertex respectively meets the preset corner constraint conditions of the corresponding screen corner of the display screen, determining that the contour shape of the target contour is matched with the display screen shape of the display screen.

In one embodiment, the acquiring the to-be-processed image of the display screen to be corrected under different color channels includes: acquiring an original image of a display screen to be corrected when the display screen is lightened to be white, and extracting images to be processed under different color channels in the original image; and/or respectively acquiring original images of the display screen to be corrected when the display screen is lightened into different optical three primary colors, and taking the original images as images to be processed under different color channels.

In a second aspect, the present application further provides a correction factor determining apparatus, including:

the first acquisition module is used for acquiring images to be processed of the display screen to be corrected under different color channels; wherein the display screen in the image to be processed is in a lighting state; the display screen is spliced by different display units;

the second acquisition module is used for acquiring the brightness of the spliced lamp beads in each display unit in the image to be processed under different color channels; the spliced lamp beads are lamp beads positioned in a spliced area of the display unit;

the first determining module is used for determining the brightness of the display screen under different color channels according to the unit brightness of the different display units;

and the second determining module is used for determining a correction coefficient for correcting the brightness of the display screen under the corresponding color channel according to the brightness of the spliced lamp beads in each display unit under the different color channels and the brightness of the display screen under the corresponding color channel.

In a third aspect, the present application also provides a computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

In a fourth aspect, the present application also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

In a fifth aspect, the present application also provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of:

According to the correction coefficient determining method, device, equipment, storage medium and program product, the unit brightness of different display units is introduced to determine the display screen brightness of the display screen under different color channels, so that the correction coefficient is determined based on the display screen brightness, the unit brightness of different display units can be fully considered in the correction coefficient determining process, the influence on the whole brightness of the display screen is avoided, the situation that the determined correction coefficient is locally bright and dark when the display screen is corrected is avoided, and the accuracy of the correction coefficient determining result is improved. The correction coefficient determination process is automatically realized by adopting an image processing technology, and the correction coefficients under different color channels can be determined jointly without relying on manual processing of the correction coefficients one by the color channels, so that the correction coefficient determination efficiency is improved, and meanwhile, the influence of human factors on the correction coefficient determination result is avoided, so that the consistency and the accuracy of the correction coefficient determination result are improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person having ordinary skill in the art.

Fig. 1 is a block diagram of a screen correction system provided in an embodiment of the present application;

fig. 2 is a flowchart of a correction factor determining method according to an embodiment of the present application;

fig. 3 is a flowchart of a method for determining brightness of a display screen according to an embodiment of the present application;

fig. 4 is a flowchart of a method for determining brightness of a lamp bead according to an embodiment of the present application;

fig. 5 is a flowchart of a method for determining an image of a display screen according to an embodiment of the present application;

fig. 6 is a flowchart of a screen brightness correction method according to an embodiment of the present application;

fig. 7 is a block diagram of a correction coefficient determining apparatus according to an embodiment of the present application;

fig. 8 is an internal structural diagram of a computer device according to an embodiment of the present application.

Detailed Description

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

The correction coefficient determining method and the correction coefficient determining device provided by the embodiment of the application are suitable for application scenes for carrying out brightness correction on the display screen. For ease of understanding, the screen correction system employed in the present application will be described in detail first.

Referring to fig. 1, a screen correction system includes an image acquisition device 110, a data operation device 120, a correction device 130, and a display screen 140 to be corrected. Wherein,

the image acquisition device 110 is used for acquiring images to be processed of the display screen 140 under different color channels;

the data operation device 120 is configured to determine a correction coefficient for performing brightness correction on the display screen under the corresponding color channel according to the images to be processed under the different color channels;

and the correction device 130 is used for controlling the brightness correction of the lamp beads in the display screen 140 according to the correction coefficient.

It should be noted that the image capturing device 110, the data computing device 120, and the correction device 130 may be separately provided, or at least two devices may be integrated into the same device, which is not limited in this application.

The correction coefficient determination process will be described in detail below with the data operation device in the screen correction system shown in fig. 1 as an execution subject.

Fig. 2 is a flowchart of a correction factor determining method according to an embodiment of the present application, where the method includes:

s210, obtaining images to be processed of the display screen to be corrected under different color channels.

Wherein, the display screen in the image to be processed is in a lighting state; the display screen is spliced by different display units, and the display units can be LED display screen boxes or LED display panels; each display unit comprises a plurality of lamp beads which are sequentially arranged. The lighting state may be understood as a state in which the display screen is turned on and the lamp beads in the display unit of the display screen are lighted.

The image to be processed may be acquired by an image acquisition device, which may be a computing device itself that performs the correction coefficient determining method, or other devices communicatively connected to the computing device, which is not limited in this application. Wherein different color channels may construct a color space in which different colors are rendered by linear combinations of color components under the different color channels. By way of example, the different color channels may include an R (Red ), G (Green), and B (Blue) channel that construct an RGB (Red Green Blue) color space.

In an alternative embodiment, an original image of the display screen to be corrected when it is lit to white may be acquired, and the image to be processed under the different color channels in the original image may be extracted.

The white is formed by compounding three colors of red, green and blue, so that image information under different color channels can be carried in an original image when the display screen is lightened into white, and an image to be processed under the corresponding color channel can be obtained by extracting the image of the original image under the different color channels.

It can be understood that the image to be processed under the channels with different colors is obtained by the method, and only the image acquisition of the single Zhang Yuanshi image is needed in the earlier stage, so that the image acquisition time is shortened, and the image acquisition efficiency is improved.

In another alternative embodiment, the original images of the display screen to be corrected when they are lit up to different optical three primary colors may also be acquired as the images to be processed in the different color channels, respectively.

Wherein the optical three primary colors may include red, green and blue. Therefore, the original image acquired when the display screen to be corrected is lightened to red can be directly used as an image to be processed under the R channel; taking an original image acquired when a display screen to be corrected is lightened to be green as an image to be processed under a G channel; and taking an original image acquired when the display screen to be corrected is lighted to be blue as an image to be processed under the B channel.

It can be understood that the image to be processed under different color channels is obtained in the above manner, so that additional secondary processing on the original image is not needed, and the data operation amount in the correction coefficient determining process is reduced.

S220, obtaining the brightness of the spliced lamp beads in each display unit in the image to be processed under different color channels.

The lamp bead brightness of the lamp beads is used for representing the brightness condition of the individual lamp beads. It should be noted that the same lamp bead has respective lamp bead brightness under different color channels. Wherein, the lamp pearl in the display element can include concatenation lamp pearl and non-concatenation lamp pearl. The spliced lamp beads are positioned in the spliced area of the display unit; the non-spliced beads are other beads located in a non-spliced region of the display unit. The splicing region is understood to be the region adjacent to and parallel to the seam, the length of which is the same as the length of the seam, and the width of which can be set by the skilled person according to actual conditions or experience or can be repeatedly determined by a large number of experiments. Illustratively, the zone width may be an integer multiple of the distance between the beads.

For example, the correspondence between different pixel points in the image to be processed and the lamp beads in the display unit of the display screen can be obtained; based on the corresponding relation, determining the brightness of the spliced lamp beads in each display unit and the lamp beads under the corresponding color channels according to the pixel brightness of different pixel points in the image to be processed under different color channels. The correspondence may be constructed manually, or may be implemented by at least one mode in the related art, which is not limited in this application.

Optionally, the brightness of the lamp beads of different lamp beads under different color channels in each display unit in the image to be processed can be obtained; and selecting spliced lamp beads in the corresponding display unit according to the distribution conditions of different lamp beads in the display unit, and the brightness of the lamp beads under different color channels.

In an alternative embodiment, if the image to be processed is a display screen image, the pixel brightness of different pixel points in the image to be processed under different color channels can be directly adopted to determine the brightness of the spliced lamp beads in each display unit under the corresponding color channels.

In another alternative embodiment, if the image to be processed includes a display screen image and a non-display screen image (for example, a background image), the display screen image in the image to be processed needs to be extracted first, and then the brightness of pixels of different pixels in the display screen image under different color channels is adopted to determine the brightness of the spliced light beads in each display unit under the corresponding color channels.

S230, determining the brightness of the display screen under different color channels according to the unit brightness of different display units.

The unit brightness of the display unit is used for representing the overall brightness condition of the display unit. It is noted that the cell brightness of the display cells under different color channels may be the same or different. The display screen brightness of the display screen is used for representing the overall brightness condition of the display screen.

The brightness of the display unit may be set by a technician according to the real brightness requirement of the display screen, detected by the brightness detection device, or at least one mode of the related technology, which is not limited in this application.

For example, the brightness of the display screen under different color channels can be comprehensively determined according to the position distribution of different display units in the display screen and the unit brightness of each display unit.

In an alternative embodiment, the brightness weights of different display units may be determined according to the position distribution of the display units; and for each color channel, carrying out weighted average on the unit brightness of each display unit under the corresponding color channel according to the brightness weight to obtain the display screen brightness of the display screen under the corresponding color channel. The brightness weights of the different display units may be the same or different, which is not limited in this application. For example, the luminance weight of a display unit near the center of the display screen may be less than the luminance weight of a display unit near the edge of the display screen.

In another alternative embodiment, a preset number of display units, which are located near the center, may be selected from the display screen as target display units; and determining the brightness of the display screen under different color channels according to the unit brightness of the target display unit. The preset number may be determined according to at least one of a total number of display units included in the display screen and a position distribution of different display units. For example, if the rectangular display screen is obtained by splicing 5*6 rectangular display units with the same size, 3×4 display units located in the center may be selected as the target display units.

S240, determining a correction coefficient for correcting the brightness of the display screen under the corresponding color channel according to the brightness of the spliced lamp beads in each display unit under the different color channels and the brightness of the display screen under the corresponding color channel.

For any color channel, the correction coefficient of the color channel is determined according to the difference between the brightness of the spliced lamp beads in each display unit in the color channel and the brightness of the display screen in the color channel.

In an alternative embodiment, for any color channel, the difference or ratio between the brightness of the display screen under the color channel and the brightness of the spliced beads under the color channel can be used as a correction coefficient for correcting the brightness of the spliced beads under the corresponding color channel.

Because the difference of the brightness of the spliced beads corresponding to the same joint under the same display unit is smaller, optionally, in order to improve the brightness acquisition efficiency of the spliced beads, the brightness of only one spliced bead can be acquired, and the brightness of the beads is shared by other spliced beads corresponding to the same joint under the display unit for use in the determination of the correction coefficient; or alternatively, in order to ensure the brightness uniformity of the same seam under the same display unit, the brightness of each spliced bead corresponding to the same seam under the display unit may be obtained, and the statistical value (such as the median, the maximum value or the average value) of the obtained brightness of the beads may be used as the brightness of the beads shared by each spliced bead corresponding to the same seam in the same display unit, so as to perform subsequent correction coefficient determination.

Optionally, at least one lamp bead in the display screen to be corrected can be obtained, and correction coefficients under different color channels can be obtained; and correcting the brightness of the corresponding lamp beads in the display screen under the corresponding color channels according to the correction coefficients of the different color channels of the lamp beads.

For any color channel, the correction coefficients of the lamp beads in the corresponding color channels can be updated according to the preset initial correction coefficients of the lamp beads in the display screen; and correcting the brightness of the corresponding lamp beads under the corresponding color channels according to the updated correction coefficients. The initial correction coefficient may be a correction coefficient determined by whole screen correction in factory shipment. The whole screen correction may be implemented by at least one of the related technologies, which is not limited in this application.

It should be noted that the computing device performing the brightness correction and the computing device performing the correction coefficient determining method may be the same or different, which is not limited in this application.

According to the method and the device for determining the brightness of the display screen, the brightness of the display screen under different color channels is determined by introducing the unit brightness of different display units, so that the determination of the correction coefficient is performed based on the brightness of the display screen, the unit brightness of different display units can be fully considered in the determination process of the correction coefficient, the influence on the whole brightness of the display screen is avoided, the situation that the determined correction coefficient is locally bright and dark when the display screen is corrected is avoided, and the accuracy of the determination result of the correction coefficient is improved. The correction coefficient determination process is automatically realized by adopting an image processing technology, and the correction coefficients under different color channels can be determined jointly without relying on manual processing of the correction coefficients one by the color channels, so that the correction coefficient determination efficiency is improved, and meanwhile, the influence of human factors on the correction coefficient determination result is avoided, so that the consistency and the accuracy of the correction coefficient determination result are improved. In addition, the correction coefficient determining process can be adapted to different application scenes of the display screen when leaving a factory and being disassembled and assembled, and has application scene universality.

Fig. 3 is a flowchart of a method for determining brightness of a display screen according to an embodiment of the present application. Based on the technical solutions of the foregoing embodiments, this embodiment relates to an alternative implementation manner of determining, in S230, the brightness of the display screen under different color channels according to the unit brightness of different display units. It should be noted that, in the embodiments of the present application, parts not described in detail may be referred to the related expressions of other embodiments, which are not described herein. As shown in fig. 3, the step S230 may include the following steps:

s310, for any color channel, determining the unit brightness of the corresponding display unit under the color channel according to the central bead brightness of the central bead corresponding to different display units under the color channel.

The central lamp bead is a lamp bead positioned in the central area of the display unit. Wherein the central region may be a region including a center point located at the display unit; correspondingly, the brightness of the central lamp bead is the brightness of the lamp bead of the central lamp bead.

In a specific implementation manner, the central area may be an area formed by uniformly extending a preset width to the outside of the display unit according to the shape of the display unit with the central point of the display unit as the center; correspondingly, the central lamp bead is the lamp bead arranged in the central area. The preset width can be set or adjusted by a technician according to needs or experience, or can be repeatedly determined through a large number of experiments, and specific numerical values of the preset width are not limited in any way. For example, the predetermined width may be 3 times the distance between the beads.

In another specific implementation, the central light bead may be a preset number of light beads located at the center of the display unit; correspondingly, the central area is the area where the central lamp bead is located in the display unit. The preset number can be set or adjusted by a technician according to needs or experience, or can be repeatedly determined through a large number of experiments, and the specific numerical value of the preset number is not limited in any way. For example, the preset number may be 9.

The method for determining the brightness of the central bead is similar to the method for determining the brightness of the beads of the spliced beads, namely, the corresponding relation between different pixel points in the image to be processed and the beads in the display unit of the display screen can be obtained; based on the corresponding relation, determining the brightness of the central lamp bead in each display unit and the lamp bead under the corresponding color channel according to the brightness of the pixels of different pixels in the image to be processed under different color channels; and taking the brightness of the central lamp bead as the brightness of the central lamp bead. The correspondence may be constructed manually, or may be implemented by at least one mode in the related art, which is not limited in this application.

Optionally, the brightness of the lamp beads of different lamp beads in different color channels in each display unit in the image to be processed can be obtained; according to the distribution condition of different lamp beads in the display unit, selecting the brightness of the lamp beads in the corresponding display unit under different color channels as the brightness of the lamp beads in the corresponding color channels.

It is noted that the brightness of the central bead and the brightness of the spliced beads can be determined simultaneously, sequentially or alternatively, and the determining sequence of the two is not limited in this application.

In an alternative embodiment, for any display unit, the average value of the brightness of the central bead of the display unit under any color channel can be used as the unit brightness of the corresponding display unit under the corresponding color channel. This has the advantage that the brightness of the unit can be approximated to the brightness of the central bead rather than the bead brightness of the spliced beads, so that the brightness of the unit is more representative and rational.

When the brightness requirements for the lamp beads of different centers in the same display unit are different, in another alternative embodiment, the weights of the lamp beads of different centers can be determined in a differentiated mode according to the position distribution of the lamp beads of the centers in the display unit and the brightness requirements for the lamp beads of different centers; based on the weight, carrying out weighted average on the brightness of the central lamp beads of different central lamp beads in the display unit; and taking the weighted average result as the unit brightness of the display unit.

It can be understood that the method for determining the unit brightness by introducing weights to different center lamp beads has the center lamp bead pertinence, and improves the flexibility and the application scene universality of the unit brightness determination process of the display unit.

S320, determining the brightness of the display screen under the color channel according to the unit brightness of different display units under the color channel.

In an alternative embodiment, for any color channel, the average value of the unit brightness of different display units under the color channel may be used as the display screen brightness of the display screen under the color channel. The brightness correction method has the advantages that the brightness conditions of the units of different display units can be referred in the brightness determination process of the display screen, the brightness rationality of the display screen is improved, and the situation that the brightness of the different display units of the display screen is different when the brightness correction is carried out by adopting the correction coefficient determined based on the brightness of the display screen later is avoided.

When the brightness requirements of different display units of the display screen are different, in another optional embodiment, the weights of the different display units can be determined in a differentiated manner according to the position distribution of the display units and the brightness requirements of the different display units; carrying out weighted product courser on the unit brightness of different display units in the display screen based on the weight; and taking the weighted average result as the display screen brightness of the display screen.

It can be understood that the method for determining the brightness of the display screen by introducing the weights to different display units has the pertinence of the display units, and improves the flexibility and the application scene universality of the display screen brightness determination process of the display screen.

According to the embodiment of the application, the central lamp bead brightness of the central lamp bead is introduced to any color channel, and the unit brightness of the display unit is determined, so that the central lamp bead brightness corresponding to the central lamp bead with brightness representativeness can be fully considered in the unit brightness determining process of the display unit, and the rationality and accuracy of the unit brightness determining result are improved. Correspondingly, the brightness of the display screen under the corresponding color channel is determined based on the unit brightness of different display units, so that the brightness determination process of the display screen can comprehensively consider the unit brightness conditions of different display units, the rationality and the accuracy of the brightness determination result of the display screen are improved, and the accuracy of the correction coefficient determined subsequently is improved.

Fig. 4 is a flowchart of a method for determining brightness of a lamp bead according to an embodiment of the present application. Based on the technical solutions of the foregoing embodiments, this embodiment relates to an optional implementation manner for obtaining, in S220, the brightness of the spliced beads in each display unit in the image to be processed under different color channels. It should be noted that, in the embodiments of the present application, parts not described in detail may be referred to the related expressions of other embodiments, which are not described herein. As shown in fig. 4, the step S220 may include the steps of:

S410, determining a display screen image in the image to be processed.

In an alternative embodiment, the determining of the display screen image in the image to be processed may be identifying, by a preset contour identifying manner, a display screen contour in the image to be processed in the corresponding color channel, and taking the corresponding image of the display screen contour in the image to be processed as the display screen image. The preset contour recognition mode may be implemented by at least one of related technologies, which is not limited in this application.

Optionally, in order to further improve accuracy of the contour recognition result, denoising the image to be processed before contour recognition may be performed, and specifically, at least one denoising manner in the related art may be adopted, which is not limited in this application.

Optionally, in order to further improve accuracy of the contour recognition result, after the contour recognition of the display screen is performed, a smoothing process may be performed on the contour recognition result, so as to eliminate contour noise in the contour recognition result, and reduce occurrence of contour burrs or contour folds.

Due to the influences of factors such as image precision of the to-be-processed image, image acquisition errors of the to-be-processed images of different color channels and the like, certain differences may exist in display screen positioning of the to-be-processed images of different color channels corresponding to the same display screen, and in order to avoid the influence of the differences on the subsequent lamp bead brightness determining process, display screen positioning conditions in the to-be-processed images of different color channels can be synthesized to determine the display screen images.

S420, according to the image size of the display screen image and the display screen size of the display screen, establishing corresponding relations between different pixel points in the display screen image and different lamp beads in the display screen.

For example, the scaling ratio between the display screen image and the display screen may be determined according to the image size of the display screen image and the display screen size of the display screen; according to the scaling ratio, the corresponding relation between different pixel points in the display screen image and different lamp beads in the display screen can be established by combining the pixel point distribution in the display screen image and the lamp bead distribution of the display screen.

It is noted that if the image size of the display screen image is the same as the display screen size of the display screen, and the image resolution of the display screen image is the same as the screen resolution of the display screen, the pixel points and the lamp beads are in one-to-one correspondence; otherwise, the pixel point and the lamp bead are in one-to-many or many-to-one relation.

S430, determining the brightness of the spliced lamp beads in each display unit in the display screen image under different color channels according to the corresponding relation.

And aiming at any lamp bead, determining a corresponding pixel point of the lamp bead in the display screen image according to the corresponding relation, and determining the brightness of the lamp bead under the corresponding color channel according to the brightness value of the corresponding pixel point under the different color channels.

For example, for any color channel, a statistical value (such as a mean value, a median value, or a maximum value) of brightness values of at least one pixel point corresponding to the same lamp bead under the corresponding color channel may be used as the brightness of the lamp bead under the corresponding color channel.

It should be noted that when the beads and the pixel point are in a many-to-one relationship, each bead corresponding to one pixel point can be used as a composite bead, and then the composite bead is treated as a whole.

It can be appreciated that the above-mentioned beads may include spliced beads and/or non-spliced beads, that is, the bead brightness of different beads in the display unit may be determined by the above-mentioned method according to the need, which is not limited in this application.

According to the embodiment of the application, before the brightness of the spliced lamp beads is obtained, the display screen image in the image to be processed is determined, and then the corresponding relation between the lamp beads and the pixel points is established according to the image size of the display screen image and the display screen size of the display screen to serve as a basis for determining the brightness of the lamp beads of the spliced lamp beads. According to the technical scheme, the display screen image can be segmented under the condition that the image to be processed comprises the display screen image and the non-display screen image, so that the subsequent lamp bead brightness determining process can be suitable for the condition that the quota of the image to be processed comprises the non-display screen image, and the universality of the lamp bead brightness determining process is improved.

Fig. 5 is a flowchart of a method for determining an image of a display screen according to an embodiment of the present application. Based on the technical solutions of the foregoing embodiments, the present application relates to an alternative implementation manner of determining a display screen image in an image to be processed in S410. It should be noted that, in the embodiments of the present application, parts not described in detail may be referred to the related expressions of other embodiments, which are not described herein. As shown in fig. 5, the step S410 may include the following steps:

s510, identifying initial outlines of the display screens in the images to be processed under different color channels.

Illustratively, identifying the initial contour of the display screen in the image to be processed under the different color channels may be: aiming at the image to be processed under any color channel, the initial outline of the display screen in the image to be processed under the corresponding color channel is identified by a preset outline identification mode. The preset contour recognition mode may be implemented by at least one of related technologies, which is not limited in this application. For example, the display screen initial contour detection may be implemented based on an edge detection technique, such as based on a canny operator, and contour search using a findContours () function.

It is noted that the outline of the display screen may be polygonal or circular, etc., and may be rectangular, for example. Accordingly, the identified initial contour of the display screen is generally the same as or similar to the contour of the display screen.

Optionally, in order to further improve accuracy of the contour recognition result, after the contour recognition of the display screen is performed, a smoothing process may be performed on the contour recognition result, so as to eliminate contour noise in the contour recognition result, and reduce occurrence of contour burrs or contour folds. For example, an appropolydp () function may be employed for denoising processing.

S520, determining the target outline of the display screen according to the initial outlines of the display screen under the channels with different colors.

Illustratively, determining the target contour of the display screen according to the initial contour of the display screen under the different color channels may be: and selecting one of the display screen contours as a target contour of the display screen according to a preset selection mechanism from the display screen initial contours under different color channels.

The preset selection mechanism may include at least one of random selection, selection according to position distribution, selection according to area size, and the like. For example, the selection according to the position distribution may be to preferentially select the initial contour of the display screen near the middle position of the image to be processed as the target contour according to the relative position of the initial contour of the display screen in the image to be processed. For another example, the initial contour of the display screen with the largest contour area is selected as the target contour according to the contour area of the initial contour of the display screen; alternatively, the initial contour of the display screen with the largest intersection area with the initial contours of other display screens can be selected as the target contour according to the intersection area with the initial contours of other display screens.

Or alternatively, determining the target outline of the display screen according to the initial outline of the display screen under different color channels may be: and determining the target contour of the display screen according to the contour distribution conditions of the initial contours of the display screen under the channels with different colors.

In an alternative embodiment, the initial contour of the display screen with a larger contour distribution area can be determined as the target contour of the display screen according to the contour distribution conditions of the initial contours of the display screen under different color channels.

In another optional embodiment, the target contour of the display screen can be generated according to the contour distribution condition of the initial contour of the display screen under different color channels; the target outline of the display screen is the same as the shape of the display screen, and is the minimum external outline of the initial outline of each display screen.

In yet another alternative embodiment, if the display screen is a polygonal contour, the contour vertices located in the same vertex area may be determined according to the contour distribution of the initial contours of the display screen under different color channels; selecting a target vertex under a corresponding vertex area from the contour vertices under the vertex areas according to the position distribution of the contour vertices under any vertex area; and determining the target outline of the display screen according to the target vertexes in the different vertex areas. Wherein the polygonal profile may include at least one of a rectangular profile, a regular polygonal profile (e.g., regular hexagon), and the like.

The vertex area can be understood as an aggregation area of contour vertices of different initial contours of the display screen. For example, if the display screen is rectangular, the total number of vertex areas is 4, and each vertex area corresponds to the vertex of the outline under the different color channels.

For example, according to the position distribution of the contour vertex under any vertex area, the target vertex under the corresponding vertex area can be selected from the contour vertices under the vertex area according to a preset vertex selection mode. The preset vertex selection mode may be at least one selection mode in the related art, for example, at least one of random selection, selection according to convergence condition among vertices, and vertex regeneration according to vertex position average value, which is not limited in this application.

In order to ensure that the target contour of the display screen can cover the initial contour of the display screen under different color channels, extra noise is avoided from being introduced in the process of determining the target contour, in an alternative embodiment, according to the position distribution of contour positioning under any vertex area, the contour vertex positioned outside the belonging display unit can be selected from the contour vertices under the vertex area to be used as the target vertex under the corresponding vertex area.

It can be understood that by selecting the contour vertex close to the outer side of the display unit, the target vertex is determined, so that the subsequent target contour determined based on the target vertex can cover the initial contour of the display screen under different color channels, and meanwhile, the introduction of images of non-display screen areas is avoided as much as possible, thereby reducing the introduction of extra noise, improving the accuracy and rationality of the target vertex determination result, further improving the accuracy and rationality of the subsequent determined target contour, and being beneficial to improving the accuracy of the display screen image determination result.

For example, according to the target vertices under different vertex areas, the target contours of the display screen are determined, which may be obtained by sequentially connecting the target vertices according to the distribution condition of the vertex areas. It will be appreciated that the vertex of the target contour is the target vertex.

According to the technical scheme, the target vertexes under the corresponding vertex areas are determined by introducing the contour vertexes under the different vertex areas, and the target contour determination of the display screen is performed according to the target vertexes under the different vertex areas, so that the determination of the area or the coverage condition of the initial contour of the display screen is not needed, and only the selection of the target vertexes from the different contour vertexes is needed, the target contour determination process is more convenient and rapid, the target contour determination efficiency is improved, and the data operation amount of the target contour determination process is reduced.

It can be understood that by introducing the profile distribution condition of the initial profile of the display screen under the channels with different colors and carrying out the scheme for determining the target profile of the display screen, the determination process of the target profile can be fused with the determination results of the initial profile of the display screen under the channels with different colors, so that the rationality and the accuracy of the determination results of the target profile of the display screen are improved.

S530, determining a display screen image based on the target outline of the display screen.

For example, the image corresponding to the target contour can be taken as the display screen image under the corresponding color channel in the images to be processed under the different color channels.

In order to ensure that the determined display screen image is matched with the actual display screen, the matching condition can be judged when the display screen image is determined. And if the contour shape of the target contour is matched with the display screen shape of the display screen, taking the image corresponding to the target contour as the display screen image. Further, if the contour shape of the target contour is not matched with the display screen shape of the display screen, the determination of the display screen image is not performed according to the target contour.

It can be understood that the image corresponding to the target contour is used as the display screen image only when the contour shape of the target contour is matched with the display screen shape of the display screen, so that contour shape bottom judgment is carried out in the process of determining the display screen image, the situation that the display screen image is determined in a trade way under the condition that the determined target contour is inconsistent with the display screen shape is avoided, and the situation that the display screen image is determined to be wrong is avoided, so that the accuracy of the lamp bead brightness determination result of the subsequent spliced lamp beads is improved.

In an alternative embodiment, the contour class identification can be performed on the target contour, and if the identified contour class is the same as the shape class corresponding to the shape of the display screen, the contour shape of the target contour is determined to be matched with the shape of the display screen; otherwise, determining that the contour shape of the target contour is not matched with the display screen shape of the display screen.

For example, a trained contour class decision model may be employed to identify contours of the object. The contour class judging model can be obtained by adopting a large number of contour samples marked with contour classes and carrying out model training on a pre-constructed contour class judging model. The contour class judging model can be constructed by adopting at least one neural network model in the related technology, and the specific network structure of the contour class judging model is not limited in the application.

In another alternative embodiment, the number of target vertices of the target contour may be determined, and if the number of target vertices is the same as the number of corner points of the display screen, determining that the contour shape of the target contour matches the display screen shape of the display screen; otherwise, determining that the contour shape of the target contour is not matched with the display screen shape of the display screen. The target vertex is the contour vertex of the target contour.

In yet another alternative embodiment, if the display screen is polygonal, the included angle description information of each target vertex in the target contour may also be determined; the included angle description information comprises an included angle and/or an included angle cosine; and if the included angle description information of each target vertex respectively meets the preset corner constraint condition of the corresponding screen corner of the display screen, determining that the contour shape of the target contour is matched with the display screen shape of the display screen. Further, if included angle description information of the target vertex exists and preset corner constraint conditions of corresponding screen corners of the display screen are not met, determining that the contour shape of the target contour is not matched with the display screen shape of the display screen.

The preset corner constraint conditions are used for describing the corner constraint conditions currently met by the display screen from the angle of the corner and/or the angle cosine dimension of the corner. The preset corner constraint conditions can be set by a technician according to needs or experience, or can be repeatedly determined through a large number of experiments, and the preset corner constraint conditions are not limited in any way.

The matching process described above will be described below taking a display screen as an example of a rectangle. The angle between adjacent contour lines of each target vertex in the target contour can be determined through an angle detection mode and used as the included angle of the corresponding target vertex; if the included angle of each target vertex meets the preset angle condition (such as the included angle is larger than 73 degrees) of the corresponding screen corner point of the display screen, determining that the contour shape of the target contour is matched with the display screen shape of the display screen. Or, the angle cosine between adjacent contour lines of each target vertex in the target contour can be determined in an angle cosine determining mode and used as the angle cosine of the corresponding target vertex; if the included angle cosine of each target vertex meets the preset cosine condition (if the included angle cosine is smaller than 0.3) of the corresponding screen corner point of the display screen, determining that the contour shape of the target contour is matched with the display screen shape of the display screen.

It can be understood that whether the outline shape of the target outline is matched with the display screen shape of the display screen or not is judged by describing the included angle of each target vertex in the target outline and whether the included angle meets the preset corner preset condition of the corresponding display screen corner of the display screen, so that the situation that the number of the target vertices is consistent, but the outline identification result is distorted is avoided, the situation that the target outline is erroneously identified is avoided, the accuracy of the display screen image determination result is improved, and further the accuracy of the lamp bead brightness determination results of different lamp beads is improved.

According to the method and the device for determining the target outline of the display screen, the initial outline of the display screen in the to-be-processed image under different color channels is introduced, the target outline of the display screen is determined, the display screen image is determined based on the target outline, the display screens under different color channels can share the uniform outline, the position identity of the different to-be-processed images corresponding to the display screen image is guaranteed, the occurrence of the condition that the lamp beads are misplaced under the different color channels is avoided, and therefore the accuracy of the subsequent lamp bead brightness determination result is improved.

Fig. 6 is a flowchart of a screen brightness correction method according to an embodiment of the present application. On the basis of the above embodiments, the present embodiment relates to a specific procedure of correcting a screen. Referring to fig. 6, the method includes:

S601, the image acquisition equipment acquires images to be processed of the display screen to be corrected under different color channels.

The images to be processed under the different color channels may include the images to be processed under the R channel acquired when the display screen is lit to red, the images to be processed under the G channel acquired when the display screen is lit to green, and the images to be processed under the B channel acquired when the display screen is lit to blue.

S602, sending the images to be processed under different color channels to the data operation equipment.

The image acquisition device can adopt a local importing or wireless transmission mode to send the image to be processed to the data operation device.

S603, the data operation equipment respectively denoises the images to be processed under the channels with different colors so as to update each image to be processed.

For example, a median filtering algorithm may be used to denoise each image to be processed.

S604, performing contour detection on each image to be processed to obtain a corresponding initial contour of the display screen.

S605, respectively performing smoothing treatment on the initial contours of the display screens to update the initial contours of the display screens.

S606, determining the outline vertexes positioned under the same vertex area according to the outline distribution condition of the initial outline of each display screen.

S607, selecting the outline vertex outside the belonging display unit from the outline vertices under each vertex area as the target vertex under the corresponding vertex area.

S608, determining the target outline of the display screen according to the target vertexes in the different vertex areas.

S609, determining the cosine of the included angle of each target vertex in the target contour, and taking the image corresponding to the target contour as the display screen image under the condition that the cosine of the included angle of each target vertex is smaller than a preset cosine value.

The preset cosine value can be set by a technician according to the requirement or an experience value or can be determined through a plurality of experiments. For example, the preset cosine value may be 0.3.

S610, according to the image size of the display screen image and the display screen size of the display screen, establishing corresponding relations between different pixel points in the display screen image and different lamp beads in the display screen.

S611, determining the brightness of the spliced lamp beads in each display unit in the display screen image under different color channels and the brightness of the central lamp bead under different color channels according to the corresponding relation.

The spliced lamp beads are positioned in the spliced area of the display unit; the central lamp bead is a lamp bead positioned in the central area of the display unit.

S612, regarding any color channel, taking the average value of the brightness of the central lamp bead of each display unit under the color channel as the unit brightness of the corresponding display unit under the color channel.

S613, taking the average value of the unit brightness of different display units under the color channel as the display screen brightness of the display screen under the corresponding color channel.

S614, aiming at any spliced lamp bead, the ratio of the brightness of the display screen under each color channel to the brightness of the spliced lamp bead under the corresponding color channel is used as a correction coefficient of the spliced lamp bead under the corresponding color channel.

S615, transmitting the correction coefficient to the correction device.

S616, the correction device updates the correction coefficient according to the preset initial correction coefficient, and performs brightness correction on the display screen according to the corrected correction coefficient.

The initial correction coefficient is a correction coefficient determined by whole screen correction, and the whole screen correction can be determined by at least one mode in the related technology, which is not limited in any way in the application.

The specific implementation principle and technical effects of the screen brightness correction method provided in the embodiment of the present application may refer to the description of the foregoing embodiment, and are not repeated herein.

It should be understood that, although the steps in the flowcharts related to the above embodiments 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 referred to 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 execution of the steps or stages is not necessarily sequential, but may be performed in outline or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiments of the present application also provide a correction coefficient determining apparatus for implementing the above-mentioned correction coefficient determining method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the correction factor determining device or devices provided below may refer to the limitation of the correction factor determining method hereinabove, and will not be described herein.

In an exemplary embodiment, as shown in fig. 7, there is provided a correction coefficient determining apparatus including: a first acquisition module 710, a second acquisition module 720, a first determination module 730, and a second determination module 740. Wherein,

a first obtaining module 710, configured to obtain images to be processed of the display screen to be corrected under different color channels; wherein, the display screen in the image to be processed is in a lighting state; the display screen is spliced by different display units;

the second obtaining module 720 is configured to obtain the brightness of the spliced beads in each display unit in the image to be processed under different color channels; the spliced lamp beads are positioned in the spliced area of the display unit;

A first determining module 730, configured to determine display screen brightness of the display screen under different color channels according to unit brightness of different display units;

the second determining module 740 is configured to determine a correction coefficient for performing brightness correction on the display screen under the corresponding color channel according to the brightness of the spliced beads in each display unit under the different color channels and the brightness of the display screen under the corresponding color channel.

In an alternative embodiment, the first determining module 730 includes: the unit brightness determining unit is used for determining the unit brightness of the corresponding display unit under the color channel according to the central bead brightness of the central bead corresponding to the different display units under the color channel for any color channel; and the display screen brightness determining unit is used for determining the display screen brightness of the display screen under the color channel according to the unit brightness of different display units under the color channel.

In an alternative embodiment, the unit brightness determining unit is specifically configured to: and aiming at any display unit, taking the average value of the brightness of the central lamp bead of the display unit under the color channel as the unit brightness of the corresponding display unit under the color channel.

In an alternative embodiment, the display screen brightness determining unit is specifically configured to: and taking the average value of the unit brightness of different display units under the color channel as the display screen brightness of the display screen under the corresponding color channel.

In an alternative embodiment, the second obtaining module 720 includes: the display screen image determining unit is used for determining a display screen image in the image to be processed; the corresponding relation establishing unit is used for establishing corresponding relations between different pixel points in the display screen image and different lamp beads in the display screen according to the image size of the display screen image and the display screen size of the display screen; and the lamp bead brightness determining unit is used for determining the lamp bead brightness of the spliced lamp beads in each display unit in the display screen image under different color channels according to the corresponding relation.

In an alternative embodiment, the display screen image determining unit includes: the contour recognition subunit is used for recognizing initial contours of the display screen in the images to be processed under different color channels; the target contour determination subunit is used for determining the target contour of the display screen according to the initial contours of the display screen under the channels with different colors; and the display screen image determining subunit is used for determining the display screen image based on the target outline of the display screen.

In an alternative embodiment, the target contour determination subunit is specifically configured to: and determining the target contour of the display screen according to the contour distribution conditions of the initial contours of the display screen under the channels with different colors.

In an alternative embodiment, the target contour determining subunit is specifically configured to, when performing the step of determining the target contour of the display screen according to the contour distribution of the initial contour of the display screen under the different color channels: determining contour vertexes positioned in the same vertex area according to contour distribution conditions of initial contours of the display screen in different color channels; selecting a target vertex under a corresponding vertex area from the contour vertices under the vertex areas according to the position distribution of the contour vertices under any vertex area; and determining the target outline of the display screen according to the target vertexes in the different vertex areas.

In an alternative embodiment, the target contour determination subunit, when executing the step of selecting the target vertex under the corresponding vertex area from among the vertices of the contour under the vertex area, is specifically configured to: and selecting a contour vertex positioned outside the belonging display unit from contour vertices under the vertex area as a target vertex under the corresponding vertex area.

In an alternative embodiment, the display screen image determination subunit is specifically configured to: and if the contour shape of the target contour is matched with the display screen shape of the display screen, taking the image corresponding to the target contour as the display screen image.

In an alternative embodiment, the display screen is polygonal in shape; the display screen image determining unit further comprises a shape matching subunit, and the shape matching subunit is specifically configured to: determining included angle description information of each target vertex in the target profile; and if the included angle description information of each target vertex respectively meets the preset corner constraint condition of the corresponding screen corner of the display screen, determining that the contour shape of the target contour is matched with the display screen shape of the display screen.

In an alternative embodiment, the first acquisition module 810 includes: the first acquisition unit is used for acquiring an original image when the display screen to be corrected is lightened to be white, and extracting images to be processed under different color channels in the original image; and/or a second acquisition unit, configured to acquire original images when the display screen to be corrected is lit to different optical three primary colors, as images to be processed in different color channels, respectively.

The respective modules in the correction coefficient determination 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 an exemplary embodiment, a computer device, which may be a terminal, is provided, and an internal structure thereof may be as shown in fig. 8. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are 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 and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. 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 carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a correction factor determination method. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the structure shown in fig. 8 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.

In one exemplary embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:

acquiring images to be processed of a display screen to be corrected under different color channels; wherein, the display screen in the image to be processed is in a lighting state; the display screen is spliced by different display units;

acquiring the brightness of the spliced lamp beads in each display unit in the image to be processed under different color channels; the spliced lamp beads are positioned in the spliced area of the display unit;

according to the unit brightness of different display units, determining the display screen brightness of the display screen under different color channels;

In one embodiment, the processor when executing the computer program further performs the steps of: for any color channel, determining the unit brightness of the corresponding display unit under the color channel according to the central bead brightness of the central bead corresponding to different display units under the color channel; and determining the brightness of the display screen under the color channel according to the unit brightness of different display units under the color channel.

In one embodiment, the processor when executing the computer program further performs the steps of: and aiming at any display unit, taking the average value of the brightness of the central lamp bead of the display unit under the color channel as the unit brightness of the corresponding display unit under the color channel.

In one embodiment, the processor when executing the computer program further performs the steps of: and taking the average value of the unit brightness of different display units under the color channel as the display screen brightness of the display screen under the corresponding color channel.

In one embodiment, the processor when executing the computer program further performs the steps of: determining a display screen image in the image to be processed; according to the image size of the display screen image and the display screen size of the display screen, establishing corresponding relations between different pixel points in the display screen image and different lamp beads in the display screen; and determining the brightness of the spliced lamp beads in each display unit in the display screen image under different color channels according to the corresponding relation.

In one embodiment, the processor when executing the computer program further performs the steps of: identifying initial contours of display screens in images to be processed under different color channels; determining a target contour of the display screen according to the initial contours of the display screen under the channels with different colors; based on the target contour of the display screen, a display screen image is determined.

In one embodiment, the processor when executing the computer program further performs the steps of: and determining the target contour of the display screen according to the contour distribution conditions of the initial contours of the display screen under the channels with different colors.

In one embodiment, the processor when executing the computer program further performs the steps of: determining contour vertexes positioned in the same vertex area according to contour distribution conditions of initial contours of the display screen in different color channels; selecting a target vertex under a corresponding vertex area from the contour vertices under the vertex areas according to the position distribution of the contour vertices under any vertex area; and determining the target outline of the display screen according to the target vertexes in the different vertex areas.

In one embodiment, the processor when executing the computer program further performs the steps of: and selecting a contour vertex positioned outside the belonging display unit from contour vertices under the vertex area as a target vertex under the corresponding vertex area.

In one embodiment, the processor when executing the computer program further performs the steps of: and if the contour shape of the target contour is matched with the display screen shape of the display screen, taking the image corresponding to the target contour as the display screen image.

In one embodiment, the processor when executing the computer program further performs the steps of: determining included angle description information of each target vertex in the target profile; and if the included angle description information of each target vertex respectively meets the preset corner constraint condition of the corresponding screen corner of the display screen, determining that the contour shape of the target contour is matched with the display screen shape of the display screen.

In one embodiment, the processor, when executing the computer program, further performs the steps of: acquiring an original image of a display screen to be corrected when the display screen is lightened to be white, and extracting images to be processed under different color channels in the original image; and/or respectively acquiring original images of the display screen to be corrected when the display screen is lightened into different optical three primary colors, and taking the original images as images to be processed under different color channels.

In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:

In one embodiment, the computer program when executed by the processor further performs the steps of: for any color channel, determining the unit brightness of the corresponding display unit under the color channel according to the central bead brightness of the central bead corresponding to different display units under the color channel; and determining the brightness of the display screen under the color channel according to the unit brightness of different display units under the color channel.

In one embodiment, the computer program when executed by the processor further performs the steps of: and aiming at any display unit, taking the average value of the brightness of the central lamp bead of the display unit under the color channel as the unit brightness of the corresponding display unit under the color channel.

In one embodiment, the computer program when executed by the processor further performs the steps of: and taking the average value of the unit brightness of different display units under the color channel as the display screen brightness of the display screen under the corresponding color channel.

In one embodiment, the computer program when executed by the processor further performs the steps of: determining a display screen image in the image to be processed; according to the image size of the display screen image and the display screen size of the display screen, establishing corresponding relations between different pixel points in the display screen image and different lamp beads in the display screen; and determining the brightness of the spliced lamp beads in each display unit in the display screen image under different color channels according to the corresponding relation.

In one embodiment, the computer program when executed by the processor further performs the steps of: identifying initial contours of display screens in images to be processed under different color channels; determining a target contour of the display screen according to the initial contours of the display screen under the channels with different colors; based on the target contour of the display screen, a display screen image is determined.

In one embodiment, the computer program when executed by the processor further performs the steps of: and determining the target contour of the display screen according to the contour distribution conditions of the initial contours of the display screen under the channels with different colors.

In one embodiment, the computer program when executed by the processor further performs the steps of: determining contour vertexes positioned in the same vertex area according to contour distribution conditions of initial contours of the display screen in different color channels; selecting a target vertex under a corresponding vertex area from the contour vertices under the vertex areas according to the position distribution of the contour vertices under any vertex area; and determining the target outline of the display screen according to the target vertexes in the different vertex areas.

In one embodiment, the computer program when executed by the processor further performs the steps of: and selecting a contour vertex positioned outside the belonging display unit from contour vertices under the vertex area as a target vertex under the corresponding vertex area.

In one embodiment, the computer program when executed by the processor further performs the steps of: and if the contour shape of the target contour is matched with the display screen shape of the display screen, taking the image corresponding to the target contour as the display screen image.

In one embodiment, the computer program when executed by the processor further performs the steps of: determining included angle description information of each target vertex in the target profile; and if the included angle description information of each target vertex respectively meets the preset corner constraint condition of the corresponding screen corner of the display screen, determining that the contour shape of the target contour is matched with the display screen shape of the display screen.

In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring an original image of a display screen to be corrected when the display screen is lightened to be white, and extracting images to be processed under different color channels in the original image; and/or respectively acquiring original images of the display screen to be corrected when the display screen is lightened into different optical three primary colors, and taking the original images as images to be processed under different color channels.

In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:

It should be noted that, the data (including, but not limited to, data for analysis, stored data, presented data, etc.) referred to in the present application are all information and data authorized by the user or sufficiently authorized by each party, and the collection, use, and processing of the relevant data are required to meet the relevant regulations.

Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments 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 the various 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), magnetic 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 the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being 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 above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims

1. A correction coefficient determining method, characterized by comprising:

2. The method according to claim 1, wherein determining the display screen brightness of the display screen under different color channels according to the unit brightness of the different display units comprises:

for any color channel, determining the unit brightness of the corresponding display unit under the color channel according to the central bead brightness of the central bead corresponding to different display units under the color channel;

and determining the brightness of the display screen under the color channel according to the unit brightness of different display units under the color channel.

3. The method according to claim 2, wherein determining the cell brightness of the corresponding display cell under the color channel according to the center bead brightness of the center bead corresponding to the different display cell under the color channel comprises:

And aiming at any display unit, taking the average value of the brightness of the central lamp bead of the display unit under the color channel as the unit brightness of the corresponding display unit under the color channel.

4. The method according to claim 2, wherein determining the display screen brightness of the display screen under the color channel according to the unit brightness of different display units under the color channel comprises:

and taking the average value of the unit brightness of different display units under the color channel as the display screen brightness of the display screen under the corresponding color channel.

5. The method according to any one of claims 1 to 4, wherein the obtaining the brightness of the spliced beads in each display unit in the image to be processed under different color channels includes:

determining a display screen image in the image to be processed;

according to the image size of the display screen image and the display screen size of the display screen, establishing corresponding relations between different pixel points in the display screen image and different lamp beads in the display screen;

and determining the brightness of the spliced lamp beads in each display unit in the display screen image under different color channels according to the corresponding relation.

6. The method of claim 5, wherein the determining a display screen image of the images to be processed comprises:

identifying initial contours of display screens in images to be processed under different color channels;

determining a target contour of a display screen according to initial contours of the display screen under different color channels;

and determining the display screen image based on the target outline of the display screen.

7. The method of claim 6, wherein determining the target profile of the display screen based on the initial profile of the display screen for the different color channels comprises:

and determining the target contour of the display screen according to the contour distribution conditions of the initial contours of the display screen under different color channels.

8. The method of claim 7, wherein determining the target contour of the display screen based on the contour distribution of the initial contour of the display screen in the different color channels comprises:

determining contour vertexes positioned in the same vertex area according to contour distribution conditions of initial contours of the display screen in different color channels;

selecting a target vertex under a corresponding vertex area from the contour vertices under the vertex areas according to the position distribution of the contour vertices under any vertex area;

And determining the target outline of the display screen according to the target vertexes in the different vertex areas.

9. The method of claim 8, wherein selecting the target vertex from among the vertices of the contour under the vertex region, comprises:

and selecting a contour vertex positioned outside the display unit from the contour vertices under the vertex areas as a target vertex under the corresponding vertex area.

10. The method of any of claims 6-9, wherein the determining the display screen image based on the target contour of the display screen comprises:

and if the contour shape of the target contour is matched with the display screen shape of the display screen, taking the image corresponding to the target contour as the display screen image.

11. The method of claim 10, wherein the display screen is polygonal in shape; the method further comprises the steps of:

determining included angle description information of each target vertex in the target profile;

and if the included angle description information of each target vertex respectively meets the preset corner constraint conditions of the corresponding screen corner of the display screen, determining that the contour shape of the target contour is matched with the display screen shape of the display screen.

12. A correction coefficient determining apparatus, characterized by comprising:

13. 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 1-11 when the computer program is executed.

14. 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 1-11.

15. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method according to any one of claims 1-11.