CN116434688A - Multi-batch correction method, device, terminal equipment, system and storage medium - Google Patents

Multi-batch correction method, device, terminal equipment, system and storage medium Download PDF

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Publication number
CN116434688A
CN116434688A CN202310342417.5A CN202310342417A CN116434688A CN 116434688 A CN116434688 A CN 116434688A CN 202310342417 A CN202310342417 A CN 202310342417A CN 116434688 A CN116434688 A CN 116434688A
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China
Prior art keywords
corrected
sub
area
display
correction
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CN202310342417.5A
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Chinese (zh)
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王硕
韦桂锋
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Xian Novastar Electronic Technology Co Ltd
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Xian Novastar Electronic Technology Co Ltd
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Priority to CN202310342417.5A priority Critical patent/CN116434688A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The application is suitable for the technical field of display screens and provides a multi-batch correction method, a device, terminal equipment, a system and a storage medium. The multi-batch correction method specifically comprises the following steps: acquiring a display image of a target display area, wherein the target display area comprises a plurality of sub-areas to be corrected, each sub-area to be corrected comprises a plurality of light points, and batches to which at least two sub-areas to be corrected belong are different; determining optical data of each sub-area to be corrected according to the display image; determining a correction coefficient of each sub-region to be corrected according to the optical data of each sub-region to be corrected, wherein the correction coefficient is used for correcting the optical data of the corresponding sub-region to be corrected to a preset data range; and correcting the corresponding sub-areas to be corrected according to the correction coefficients of each sub-area to be corrected. The embodiment of the application can improve the efficiency of multi-batch correction of the display screen.

Description

Multi-batch correction method, device, terminal equipment, system and storage medium
Technical Field
The application belongs to the technical field of display screens, and particularly relates to a multi-batch correction method, a device, terminal equipment, a system and a storage medium.
Background
In general, the boxes or display modules forming the display screen are all from the same production batch, so that the display effect of the screen is relatively high in consistency. The problem of luminance and chrominance decay usually occurs along with the increase of the use duration of the box or the display module, if the use duration of the box or the display module forming the display screen is very different, the problem of uneven luminance and chrominance of the screen can occur. In other cases, the number of the boxes or the display modules in one production lot is insufficient, so that the boxes or the display modules in another production lot need to be used for supplementing, and the problem of uneven brightness of the screen can also occur. In order to solve the above-mentioned problems, the related art often needs to perform brightness correction on a lamp-by-lamp-point basis, which is inefficient.
Disclosure of Invention
The embodiment of the application provides a multi-batch correction method, a multi-batch correction device, a multi-batch correction terminal, a multi-batch correction system and a multi-batch correction storage medium, which can solve the problem that in the related art, correction efficiency is low when display differences among different batches of boxes or display modules are corrected.
An embodiment of the present invention provides a multi-batch correction method, applied to a terminal device, including: acquiring a display image of a target display area, wherein the target display area comprises a plurality of sub-areas to be corrected, each sub-area to be corrected comprises a plurality of light points, and batches to which at least two sub-areas to be corrected belong are different; determining optical data of each sub-area to be corrected according to the display image; determining a correction coefficient of each sub-region to be corrected according to the optical data of each sub-region to be corrected, wherein the correction coefficient is used for correcting the optical data of the corresponding sub-region to be corrected to a preset data range; and correcting the corresponding sub-areas to be corrected according to the correction coefficients of each sub-area to be corrected.
The second aspect of the embodiment of the present application provides a multi-batch calibration device configured in a terminal device, where the multi-batch calibration device includes: the image acquisition unit is used for acquiring a display image of a target display area, wherein the target display area comprises a plurality of sub-areas to be corrected, each sub-area to be corrected comprises a plurality of light points, and batches to which at least two sub-areas to be corrected belong are different; an optical data determining unit, configured to determine optical data of each sub-area to be corrected according to the display image; the correction coefficient determining unit is used for determining a correction coefficient of each sub-area to be corrected according to the optical data of each sub-area to be corrected, and the correction coefficients are used for calibrating the optical data of the corresponding sub-areas to be corrected to the same data range; and the multi-batch correction unit is used for correcting the corresponding sub-areas to be corrected according to the correction coefficients of each sub-area to be corrected.
A third aspect of the embodiments of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the steps of the above-mentioned multi-batch correction method are implemented when the processor executes the computer program.
A fourth aspect of the embodiments of the present application provides a display system, including a terminal device and a display screen; the terminal device is configured to correct a target display area of the display screen according to the multi-batch correction method described in the first aspect, where the target display area is a part or all of the display area of the display screen.
A fifth aspect of the embodiments of the present application provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the multi-batch correction method described above.
A sixth aspect of the embodiments of the present application provides a computer program product for, when run on a terminal device, causing the terminal device to perform the multi-batch correction method described in the first aspect above.
In the embodiment of the application, the display image of the target display area is obtained, the optical data of each sub-area to be corrected in the target display area is determined according to the display image, the correction coefficient of each sub-area to be corrected is determined according to the optical data of each sub-area to be corrected, and the corresponding sub-areas to be corrected are corrected according to the correction coefficient of each sub-area to be corrected, so that the optical data of the sub-areas to be corrected of different batches to which the correction coefficients belong can be calibrated to a preset data range, and the terminal equipment does not need to determine the correction coefficient for correcting the brightness degree one by one lamp point, but corrects the correction coefficients by taking the sub-areas to be corrected formed by a plurality of lamp points as units, so that the efficiency of multi-batch correction can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of an implementation of a multi-batch correction method according to an embodiment of the present application;
FIG. 2 is a schematic diagram I of a display image according to an embodiment of the present application;
FIG. 3 is a second schematic diagram of a display image according to an embodiment of the present disclosure;
FIG. 4 is a flowchart of a specific implementation of determining optical data according to an embodiment of the present application;
FIG. 5 is a schematic flow chart of a specific implementation of determining correction coefficients according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a display system according to an embodiment of the present application;
fig. 7 is a schematic diagram of an implementation flow of correction of a sub-area to be corrected by the control device according to the embodiment of the present application;
fig. 8 is a schematic diagram of a specific structure of a display system according to an embodiment of the present application;
FIG. 9 is a schematic diagram of a multi-lot calibration apparatus according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of a terminal device provided in 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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be protected herein.
In general, the boxes or display modules forming the display screen are all from the same production batch, so that the display effect of the screen is relatively high in consistency. The problem of luminance and chrominance decay usually occurs along with the increase of the use duration of the box or the display module, if the use duration of the box or the display module forming the display screen is very different, the problem of uneven luminance and chrominance of the screen can occur. In other cases, the number of the boxes or the display modules in one production lot is insufficient, so that the boxes or the display modules in another production lot need to be used for supplementing, and the problem of uneven brightness of the screen can also occur. In order to solve the above problems, the related art often needs to correct the brightness from lamp point to lamp point, which is a long time and low correction efficiency.
Based on this, the present application proposes a method of multi-batch correction. On one hand, the display effect of the screen is more uniform by correcting the boxes or the display modules of different batches, and multi-batch correction is realized, and on the other hand, the efficiency of multi-batch correction is realized by correcting the sub-areas to be corrected, which are formed by a plurality of lamp points, as a unit.
In order to illustrate the technical solution of the present application, the following description is made by specific examples.
Fig. 1 shows a schematic implementation flow chart of a multi-batch correction method provided in the embodiment of the present application, where the method may be applied to a terminal device, and may be suitable for a situation that correction efficiency needs to be improved when correction of display differences between different batches of boxes or display modules is required. The terminal device may be an intelligent device for correcting the display screen, for example, may be a mobile phone, a computer, a tablet computer, etc.
Specifically, the multi-batch correction method may include the following steps S101 to S104.
Step S101, a display image of a target display area is acquired.
In the embodiment of the present application, the target display area refers to a display area to be subjected to multi-batch correction, and may refer to a partial display area of the display screen or may refer to an entire display area of the display screen.
It will be appreciated that the target display area is generally rectangular, however, embodiments of the present application do not exclude the use of non-rectangular areas as target display areas. And, the above-mentioned display screen may refer to a LCD (Liquid Crystal Display) display screen, an LED (Light-Emitting Diode) display screen, or an OLED (Organic Light-Emitting Diode) display screen. Taking an LED display screen as an example, the LED display screen may be a common LED display screen, or may be microLED, miniLED and future new types of LEDs. And the display screen can be packaged by SMD, COB, COG or a future novel packaging mode. This application is not limited thereto.
In an embodiment of the present application, the target display area may include a plurality of sub-areas to be corrected, each sub-area to be corrected being one unit for performing multi-batch correction in the target display area. Specifically, each sub-area to be corrected may include a plurality of light points. For example, the sub-area to be corrected may refer to a box or a display module. The box body is a display area which is obtained by packaging a plurality of display modules; the display module is also called a lamp panel, and generally comprises three lamp points of red, green and blue, and the three lamp points can be controlled to be lighted by a driving chip to realize the display of different colors. Of course, the sub-area to be corrected may be a plurality of display modules which are not packaged into a box. This application is not limited thereto.
In the target display area, the batches to which at least two subregions to be corrected belong are different. Wherein the batch may refer to one or more of a production batch, a use batch, a calibration batch.
Specifically, the production lot refers to a lot when a manufacturer performs batch production on the box or the display module. The display characteristics of the boxes or the display modules in the same production batch are similar, the boxes or the display modules are usually used together, the use time is similar, and further the attenuation degree of each lamp point is similar, so that the display effect is similar. The display characteristics of the different boxes or display modules of the production batch may have a certain degree of difference, and if the use time is different, the attenuation degree of each lamp point is different, so that the display effect is different. By the multi-batch correction method, the display effects of the to-be-corrected sub-areas of different production batches can be approached, and the problem of uneven brightness caused by production differences or use differences when different box bodies or display module combinations of the production batches are used is solved.
The use batch refers to a batch when a user performs batch use on the box or the display module. The same usage batch may indicate that the usage time length is within the same preset range. The box bodies or the display modules of the same use batch have similar use time length, and further, the attenuation degree of each lamp point is similar, so that the display effect is similar. The display characteristics of the box bodies or the display modules of different use batches are different in use time length, so that the attenuation degree of each lamp point is different, and the display effect is different. By the multi-batch correction method, the display effects of the to-be-corrected subareas with different use batches can be approached, and the problem of uneven brightness caused by different use time lengths when the box bodies or the display module assemblies with different use time lengths are combined is solved.
The calibration batch refers to a batch when a user or manufacturer performs batch calibration on the box or the display module. The same calibration batch may be expressed as the same way of calibration used or the same calibration equipment used. It should be understood that the correction described herein may be thermal correction, gray scale correction, or the like correction techniques for adjusting the display effect of the sub-region to be corrected. The thermal correction is used for correcting the difference of display effects of the display screen in the cold screen state and the hot screen state, and the gray scale correction is used for correcting the difference of display effects of the display screen in different display gray scales. The display effects of the boxes or the display modules in the same correction batch after correction are similar. The display effect may have a certain difference after correction for the different boxes or display modules of the correction batch. By the multi-batch correction method, display effects of the to-be-corrected sub-areas of different correction batches can be enabled to approach, and the problem of uneven brightness caused by differences of correction processes when different boxes or display module combinations of the correction processes are used is solved.
In order to perform the multi-batch correction, in the embodiment of the present application, it is first necessary to acquire a display image of the target display area. The display image is an image obtained by collecting the target display area when the target display area is lighted.
It should be understood that the manner in which the display image is obtained may be selected according to actual needs. For example, the terminal device may take a picture of the target display area through a built-in image capturing device (such as a camera) to obtain a display image. For another example, the terminal device may establish a communication connection (including but not limited to a wired connection and a wireless connection) between the acquisition device (such as a camera) and itself, and acquire a display image obtained by the acquisition device capturing a target display area through the communication connection.
Step S102, determining the optical data of each sub-area to be corrected according to the display image.
It should be understood that, since the display image is an image acquired by collecting the target display area when the target display area is lighted, the image content may represent the display effect of each to-be-corrected sub-area in the target display area when the target display area is lighted, and the display effect may be represented by optical data, so that the optical data of each to-be-corrected sub-area may be determined according to the display image. That is, the optical data may be used to characterize the display effect of the corresponding sub-region to be corrected.
Specifically, the optical data may include one or more of the following information: luminous flux information, luminance information, chromaticity information. The luminous flux information can be used to characterize the luminous flux per unit area within the region to be corrected. The brightness information may be used to characterize the brightness level of the subregion to be corrected. The chromaticity information may be used to characterize the hue and/or saturation of the color of the subregion to be corrected.
Step S103, determining the correction coefficient of each sub-area to be corrected according to the optical data of each sub-area to be corrected.
The correction coefficients can be used for calibrating the optical data of the corresponding sub-areas to be corrected to a preset data range.
In the embodiment of the application, according to the optical data of each sub-area to be corrected, the difference between the optical data of each sub-area to be corrected and the preset data range can be determined, the correction coefficient of each sub-area to be corrected can be determined based on the difference, and the partial difference is compensated, so that the optical data of each sub-area to be corrected is calibrated to be within the preset data range, and further, the display effects of the corrected different sub-areas to be corrected are similar.
It should be noted that the preset data range may be adjusted according to actual situations, for example, may be set according to an empirical value or a preference of a user, or may be determined based on optical data (i.e., display effects) of each sub-area to be corrected.
Step S104, correcting the corresponding sub-areas to be corrected according to the correction coefficients of the sub-areas to be corrected.
In the embodiment of the application, according to the correction coefficient of each sub-area to be corrected, the sub-area to be corrected corresponding to each correction coefficient can be corrected, and then, the optical data of each sub-area to be corrected after correction are all located in a preset data range.
In the embodiment of the application, the display image of the target display area is obtained, the optical data of each sub-area to be corrected in the target display area is determined according to the display image, the correction coefficient of each sub-area to be corrected is determined according to the optical data of each sub-area to be corrected, and the corresponding sub-areas to be corrected are corrected according to the correction coefficient of each sub-area to be corrected, so that the optical data of the sub-areas to be corrected of different batches to which the correction coefficients belong can be calibrated to a preset data range, and the terminal equipment does not need to determine the correction coefficient for correcting the brightness degree one by one lamp point, but corrects the correction coefficients by taking the sub-areas to be corrected formed by a plurality of lamp points as units, so that the efficiency of multi-batch correction can be improved.
The multi-batch calibration method is described in detail below.
Firstly, before carrying out multi-batch correction, a user or a worker can assemble each sub-region to be corrected to form a target display region.
Then, parameter adjustment may be performed on an image pickup device or an image pickup apparatus for picking up a display image to pick up a display image of the target display area.
Specifically, in some embodiments, the terminal device may be configured with an image capturing device, where the image capturing device may refer to a sensor such as a camera. The user can adjust the acquisition parameters of the image acquisition device through the application software built in the terminal equipment. When the acquisition parameters of the image acquisition device meet preset imaging conditions, the image acquisition device is controlled to shoot the target display area, and a display image is obtained.
The adjusted acquisition parameters are parameters related to imaging definition, and may specifically refer to focal length, micro focus, aperture size, exposure time, photosensitivity (ISO), and the like. The preset imaging condition may refer to that the imaging of the subregion to be corrected in the display image is clear, in particular, may refer to that the imaging of the adjacent subregion to be corrected is not overlapped in the display image, i.e. the boundary between the adjacent subregions to be corrected is visible in the display image.
In other embodiments, the terminal device may be connected to an image capturing device, where the image capturing device may be a device with imaging capabilities, such as a high-definition video camera, an optical camera, or an industrial camera. The terminal equipment controls the image acquisition equipment to shoot the target display area, and can acquire the display image shot by the image acquisition equipment.
In order to obtain a display image capable of determining the optical data of each sub-area to be corrected, in some embodiments, the terminal device may obtain a display image when the target display area displays the preset display content.
Specifically, after the assembly of the target display area is completed, the user can establish a connection relationship between the terminal device and the control system. The control system can comprise a display screen and a control device for performing display control on the display screen. The terminal equipment can perform screen matching operation on the target display area of the display screen to acquire configuration information. Specifically, after the assembly of the target display area is completed, configuration information such as the position, the size and the like of each box or display module needs to be informed to control equipment in the control system, so that the control equipment can control each box or display module to display the content required to be displayed. Furthermore, the terminal device may send a screen-printing instruction to the control system, and instruct the control device to control the target display area to display the preset display content.
The preset display content can comprise display patterns corresponding to each sub-region to be corrected respectively, and each display pattern can be used for positioning the image region where the corresponding sub-region to be corrected is located in the display image.
As an example, the center point of each display pattern may be located at the center point of the corresponding sub-region to be corrected, and the size of each display pattern is smaller than the size of the display screen of the corresponding sub-region to be corrected. For example, as shown in fig. 2, each display pattern is a color patch centered on a module or box, and no content is displayed around each color patch. As another example, as shown in fig. 3, each display pattern is a line connecting a center point of a corresponding sub-region to be corrected and each corner point of the sub-region to be corrected. It should be understood that, in order to facilitate distinguishing between the different sub-regions to be corrected, the dashed lines in fig. 2 and 3 are edges of the sub-regions to be corrected, and are merely illustrative, and not actual display contents in the display image. And, the specific style of the display pattern is not limited thereto, and may be adjusted according to actual conditions.
In addition, the number of the preset display contents may be multiple, and each preset display content corresponds to one color, and specific colors may be red, blue, green, white, and/or other types of colors. Further, the terminal device may determine optical data of each sub-area to be corrected in the corresponding color according to the display image when the target display area displays the preset display content of each color.
Taking a terminal device as a mobile phone as an example, a user can install a plurality of batches of correction software on the mobile phone and connect the mobile phone and a control system where a target display area is located to the same local area network. The multi-batch correction software is communicated with the control system, a screen-printing instruction can be issued to the control system, and the control target display area sequentially displays red color blocks, green color blocks, blue color blocks and white color blocks which are taken as a module or a box body as a unit, and the periphery of each color block does not display any content. The user uses the camera of the mobile phone to aim at the target display area, calls the camera of the mobile phone through a plurality of batches of correction software, adjusts acquisition parameters such as exposure time, light sensitivity (ISO), focal length and the like of the camera, and shoots display images when the imaging of adjacent sub-areas to be corrected is not overlapped in the display images, wherein the red images, the green images, the blue images and the white images are displayed in the target display area.
It should be noted that, in order to enable each sub-area to be corrected, there should be at least one image of a light point for each sub-area to be corrected in the display image. Preferably, the display image includes an image of all the light points of the target display area.
That is, the image capturing device or the image capturing apparatus should be ensured to capture all the images of the target display area completely during the shooting process, that is, the target display area is not blocked, and no edge image is lost. In the worst case, it should also be ensured that at least one lamp point is captured in each sub-region to be corrected, so that the optical data of each sub-region to be corrected can be determined.
Specifically, referring to fig. 4, after the display image is acquired, the terminal device may determine the optical data according to steps S401 to S402.
Step S401, determining color information of each sub-area to be corrected according to the display image.
Specifically, the terminal device may determine an image area where each sub-area to be corrected is located from the display image, that is, determine a pixel point of each sub-area to be corrected, so as to obtain color information of each sub-area to be corrected. The color information may represent the color currently displayed by the sub-region to be corrected, and may be represented as RGB values of the sub-region to be corrected, for example, an RGB average value of pixels where the sub-region to be corrected displays a display pattern.
It should be understood that the manner of determining the image area where each sub-area to be corrected is located may be selected according to practical situations, for example, an image recognition algorithm, a threshold segmentation algorithm, or the like may be adopted. Taking the example that the target display area displays the display pattern shown in fig. 2, the terminal device may identify boundaries between color blocks in the display image, and further determine an image area where each sub-area to be corrected is located according to the boundaries.
Step S402, determining the optical data of the corresponding sub-area to be corrected according to the color information of each sub-area to be corrected.
Specifically, in some embodiments, based on the color information of each sub-region to be corrected, conversion of the color space may be performed, and the optical data of the corresponding sub-region to be corrected may be determined. For example, the RGB values of the sub-region to be corrected may be converted from the RGB color space to the HSV color space, resulting in a Hue (Hue, H) Value, a Saturation (S) Value, and a brightness (Value, V) Value of the sub-region to be corrected. Further, chromaticity information of the subregion to be corrected may be determined based on the hue value and the saturation value, and luminance information of the subregion to be corrected may be determined based on the brightness value.
When the number of preset display contents is plural, the terminal device may specifically determine optical data of each sub-area to be corrected in the corresponding color according to the display image when the target display area displays the preset display contents of each color.
Specifically, assuming that the display image includes a display image R corresponding to the target display area when displaying the red screen, a display image B corresponding to the target display area when displaying the blue screen, a display image G corresponding to the target display area when displaying the green screen, and a display image W corresponding to the target display area when displaying the white screen, the terminal device may determine the optical data of each sub-area to be corrected under R, G, B, W in the manner shown in fig. 4, so as to analyze the difference of the display effects between the sub-areas to be corrected.
Correspondingly, based on the optical data of each sub-area to be corrected, the terminal device can determine the correction coefficient of each sub-area to be corrected in combination with a preset data range.
In some embodiments, the data range may be a data range derived based on a target value. Specifically, the target value may be set according to an empirical value or a user's need, and the correction coefficient of each sub-area to be corrected may be determined according to the optical data and the target value of the optical data, so that the correction coefficient can calibrate the optical data of each sub-area to be corrected to the target value or within a certain error range of the target value (i.e., to a preset data range).
In other embodiments, the data range may be a data range obtained based on the reference data.
As shown in fig. 5, the foregoing step S103 may specifically include the following steps S501 to S502.
Step S501, determining reference data according to the optical data of the plurality of sub-areas to be corrected.
In some embodiments, any one of the optical data of the plurality of subregions to be corrected may be used as the reference data, for example, the lowest value of the optical data of the plurality of subregions to be corrected may be used as the reference data.
In other embodiments, an intersection value of intersections between the optical data of the plurality of sub-regions to be corrected may be calculated, and the obtained intersection value may be used as the reference data.
Step S502, determining the correction coefficient of each sub-area to be corrected according to the reference data and the optical data of each sub-area to be corrected.
In some embodiments of the present application, since the data range is a data range obtained based on the reference data, a correction coefficient of each sub-region to be corrected may be determined according to the reference data and the optical data of each sub-region to be corrected, and the correction coefficient may calibrate the optical data of the corresponding sub-region to be corrected to be the same as the reference data or to be within a certain error range with the reference data.
More specifically, the correction coefficient described above may be expressed as a coefficient compensation matrix. The coefficient compensation matrix can be used for adjusting the brightness of the subregion to be corrected under each color channel, so that the effect of adjusting the subregions to be corrected with different brightness to the same or similar brightness is achieved.
The coefficient compensation matrix may be expressed as
Figure BDA0004158753290000121
Wherein C is 11 For compensating for red in the red channel, C 21 For compensating green in the red channel, C 31 For compensating blue in the red channel, C 21 For compensating for red, C in the green channel 22 For compensating green in the green channel, C 32 For compensating blue in the green channel, C 13 For compensating red, C in the blue channel 23 For compensating green in blue channel, C 33 For compensating blue in the blue channel.
After the correction coefficient is obtained, the terminal equipment can communicate with the control system to realize the correction of the target display area.
Specifically, the control system may include a plurality of control devices, each to-be-corrected sub-area is connected to one control device, and the control devices connected to different to-be-corrected sub-areas may be the same or different. The control device may refer to a scan card, a receive card, or a device configured with a scan card or a receive card, and in some embodiments, the control device may also refer to a chip, for example, a T-con chip, etc.
After determining the correction coefficient of each sub-region to be corrected, the terminal device may acquire configuration information of the target display region. The configuration information may be obtained through the foregoing screen matching operation, and may include a connection relationship between each sub-area to be corrected and each control device. According to the connection relation, the terminal device can bind the correction coefficient of each sub-area to be corrected with the identification number of the control device connected with the corresponding sub-area to be corrected. The identification number may be used to uniquely identify the control device. It should be understood that the identification number may be formed by one or more of letters, numbers, and Chinese characters, and is not limited in this application.
Accordingly, in the foregoing step S104, the terminal device may send each correction coefficient to the control device corresponding to the bound identification number according to the identification number bound by each correction coefficient, so that the control device corrects the connected sub-area to be corrected.
For example, the multi-batch correction software may identify a correction factor, e.g., the correction factor identified by the identification number R1C1 represents the sub-area to be corrected that belongs to the first row and first column in the upper left corner of the target display area. Further, by the multi-batch correction software, the correction coefficient with the identification number R1C1 can be issued to the receiving card of the sub-area to be corrected of the first row and the first column of the control target display area. Similarly, the correction coefficient with the identification number R2C1 can be issued to the receiving card of the sub-area to be corrected in the first column of the second row of the control target display area, and so on.
After receiving the correction coefficient, the control device can correct the image data of the corresponding sub-area to be corrected through the image processing module of the control device so as to change the display effect presented by the corresponding sub-area to be corrected. Taking the correction coefficient as the coefficient compensation matrix, the image processing module can perform matrix multiplication operation to compensate the coefficient C 11 To C 33 And the image data is overlapped to all the lamp points of the subarea to be corrected. For example, when the sub-region to be corrected is bright in the red channel, the brightness of the red channel may be reduced based on the coefficient compensation matrix so as to be consistent with the brightness of other sub-regions to be corrected when displaying red.
In the embodiment of the application, through a multi-batch correction mode, when the boxes or display modules with different brightness performances are mixed, each box or display module can be efficiently corrected to the same or similar brightness performances.
It should be noted that the sub-area to be corrected by the multi-batch correction may be a display area where other corrections are completed or a display area where other corrections are not completed. Among other corrections, the thermal correction, gray-scale correction, and the like mentioned above may be referred to. Whether other correction is performed or not, the multi-batch correction method provided by the embodiment of the application can improve the consistency of the display effect of each sub-area to be corrected.
Referring to fig. 6, the embodiment of the application further provides a display system, which includes a terminal device and a display screen. The terminal equipment can be used for correcting the target display area of the display screen by the multi-batch correction method. The target display area is part or all of the display area of the display screen.
More specifically, the display system may further include a control device, where the control device may be configured to receive the correction coefficient sent by the terminal device and correct the connected sub-area to be corrected. It should be understood that the number of control devices described above may be plural and that the control devices to which the different sub-areas to be corrected are connected may be different.
Referring to fig. 7, the control device may be specifically configured to acquire the original image data of the connected sub-region to be corrected, and convert the original image data into gray data, where the conversion process may be specifically implemented by gamma (gamma) transformation. Then, the gradation data can be corrected by using the correction coefficient, and corrected gradation data can be obtained. And the control device can send the corrected gray data to a driving chip of the display module to control the connected sub-region to be corrected to display the corrected gray data.
More specifically, the control device may first correct the gray-scale data by using a correction coefficient used for other corrections such as thermal correction and gray-scale correction, to obtain the processed gray-scale data. Then, the correction coefficients of the multi-batch correction are applied to the processed gray-scale data to obtain corrected gray-scale data. And finally, controlling the connected sub-region to be corrected to display the corrected gray data. Therefore, on one hand, the display effect of the subregion to be corrected can be improved through other corrections, and on the other hand, the display effect between the subregion to be corrected and other subregions to be corrected used in combination can be more uniform through multi-batch correction.
In some embodiments, the display system described above may further include a controller operable to acquire or generate image data and transmit the image data to the control device. The controller and the terminal device are different devices, and may specifically refer to a transmitting card or a device configured with the transmitting card.
Exemplary, a specific structural schematic of a display system is shown in fig. 8. The controller may include an off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) chip, a ARM (Advanced RISC Machines) processor, and a memory module; the ARM processor can process the received command through the command processing module and instruct the FPGA chip of the controller to acquire the image data. The FPGA chip of the controller can acquire the image data stored by the storage module or input by an external video source through the image processing module, processes the image data through the image processing module and then outputs the processed image data to the control equipment through the image output module. The control device may include an FPGA chip and a memory module, where the FPGA chip of the control device receives image data through the image generating module, stores the image data in the memory module, and processes the image data according to a command received by the command processing module to implement correction. And then, the FPGA chip of the control equipment can send the corrected gray data to each display module in the display area to be corrected through the image output module. The controller can be connected with one or more control devices, and a single control device can be connected with one or more display modules.
It should be noted that, for the sake of simplicity of description, the foregoing method embodiments are all expressed as a series of combinations of actions, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order according to the present application.
Fig. 9 is a schematic structural diagram of a multi-batch calibration apparatus 900 according to an embodiment of the present application, where the multi-batch calibration apparatus 900 is configured on a terminal device.
Specifically, the multi-lot calibration apparatus 900 may include:
an image obtaining unit 901, configured to obtain a display image of a target display area, where the target display area includes a plurality of sub-areas to be corrected, each sub-area to be corrected includes a plurality of light points, and at least two batches to which the sub-areas to be corrected belong are different;
an optical data determining unit 902, configured to determine optical data of each of the sub-areas to be corrected according to the display image;
a correction coefficient determining unit 903, configured to determine a correction coefficient of each sub-region to be corrected according to optical data of each sub-region to be corrected, where the correction coefficient is used to calibrate the optical data of the corresponding sub-region to be corrected to the same data range;
And the multi-batch correction unit 904 is configured to correct the corresponding sub-regions to be corrected according to the correction coefficients of each sub-region to be corrected.
In some embodiments of the present application, the optical data determining unit 902 may specifically be configured to: determining color information of each sub-area to be corrected according to the display image; and determining the optical data of the corresponding sub-areas to be corrected according to the color information of each sub-area to be corrected.
In some embodiments of the present application, the above data range is a data range obtained based on reference data; the correction coefficient determination unit 903 described above may be specifically configured to: determining the reference data according to the optical data of the plurality of sub-areas to be corrected; and determining the correction coefficient of each sub-area to be corrected according to the reference data and the optical data of each sub-area to be corrected.
In some embodiments of the present application, the image acquisition unit 901 may be specifically configured to: when the target display area displays preset display content, acquiring a display image when the target display area displays the preset display content, wherein the preset display content comprises display patterns respectively corresponding to each to-be-corrected sub-area.
In some embodiments of the present application, the number of the preset display contents is a plurality of, and each preset display content corresponds to one color; the optical data determining unit 902 may specifically be configured to: and determining the optical data of each sub-area to be corrected under the corresponding color according to the display image when the target display area displays the preset display content of each color.
In some embodiments of the present application, each of the sub-areas to be corrected is connected to a control device; the multi-batch correction apparatus 900 further includes a binding unit configured to: acquiring configuration information of the target display area, wherein the configuration information comprises a connection relation between each sub-area to be corrected and each control device; binding correction coefficients of each sub-region to be corrected with the identification numbers of the control equipment connected with the corresponding sub-region to be corrected according to the connection relation; the multi-lot calibration unit 904 may be specifically configured to: and according to the identification numbers bound by each correction coefficient, transmitting each correction coefficient to the control equipment corresponding to the bound identification number, so that the control equipment corrects the connected sub-area to be corrected.
In some embodiments of the present application, the terminal device is configured with an image acquisition device; the image acquisition unit 901 described above may be specifically configured to: when the acquisition parameters of the image acquisition device meet preset imaging conditions, the image acquisition device is controlled to shoot the target display area, and the display image is obtained.
It should be noted that, for convenience and brevity, the specific working process of the multi-batch calibration apparatus 900 may refer to the corresponding process of the method described in fig. 1 to 8, and will not be described herein again.
Fig. 10 is a schematic diagram of a terminal device according to an embodiment of the present application. Specifically, the terminal device 10 may include: a processor 100, a memory 101, and a computer program 102, such as a multi-batch correction program, stored in the memory 101 and executable on the processor 100. The processor 100, when executing the computer program 102, implements the steps of the various multi-batch correction method embodiments described above, such as steps S101 through S104 shown in fig. 1. Alternatively, the processor 100 implements the functions of the modules/units in the above-described embodiments of the apparatus, such as the functions of the image acquisition unit 901, the optical data determination unit 902, the correction coefficient determination unit 903, and the multi-batch correction unit 904 shown in fig. 9, when executing the computer program 102.
The computer program may be divided into one or more modules/units, which are stored in the memory 101 and executed by the processor 100 to complete the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which instruction segments are used for describing the execution of the computer program in the terminal device.
For example, the computer program may be split into: an image acquisition unit, an optical data determination unit, a correction coefficient determination unit, and a multi-batch correction unit.
The specific functions of each unit are as follows: the image acquisition unit is used for acquiring a display image of a target display area, wherein the target display area comprises a plurality of sub-areas to be corrected, each sub-area to be corrected comprises a plurality of light points, and batches to which at least two sub-areas to be corrected belong are different; an optical data determining unit, configured to determine optical data of each sub-area to be corrected according to the display image; the correction coefficient determining unit is used for determining a correction coefficient of each sub-area to be corrected according to the optical data of each sub-area to be corrected, and the correction coefficients are used for calibrating the optical data of the corresponding sub-areas to be corrected to the same data range; and the multi-batch correction unit is used for correcting the corresponding sub-areas to be corrected according to the correction coefficients of each sub-area to be corrected.
The terminal device may include, but is not limited to, a processor 100, a memory 101. It will be appreciated by those skilled in the art that fig. 10 is merely an example of a terminal device and is not limiting of the terminal device, and may include more or fewer components than shown, or may combine some components, or different components, e.g., the terminal device may also include input and output devices, network access devices, buses, etc.
The processor 100 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 101 may be an internal storage unit of the terminal device, such as a hard disk or a memory of the terminal device. The memory 101 may also be an external storage device of the terminal device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the terminal device. Further, the memory 101 may also include both an internal storage unit and an external storage device of the terminal device. The memory 101 is used for storing the computer program and other programs and data required by the terminal device. The memory 101 may also be used to temporarily store data that has been output or is to be output.
It should be noted that, for convenience and brevity of description, the structure of the above terminal device may also refer to a specific description of the structure in the method embodiment, which is not repeated herein.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each method embodiment described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (13)

1. A multi-lot correction method, characterized by being applied to a terminal device, comprising:
acquiring a display image of a target display area, wherein the target display area comprises a plurality of sub-areas to be corrected, each sub-area to be corrected comprises a plurality of light points, and batches to which at least two sub-areas to be corrected belong are different;
determining optical data of each sub-area to be corrected according to the display image;
determining a correction coefficient of each sub-region to be corrected according to the optical data of each sub-region to be corrected, wherein the correction coefficient is used for correcting the optical data of the corresponding sub-region to be corrected to a preset data range;
And correcting the corresponding sub-areas to be corrected according to the correction coefficients of each sub-area to be corrected.
2. The multi-batch correction method of claim 1, wherein said determining optical data for each of said sub-regions to be corrected from said display image comprises:
determining color information of each sub-area to be corrected according to the display image;
and determining the optical data of the corresponding sub-areas to be corrected according to the color information of each sub-area to be corrected.
3. The multi-lot correction method of claim 1, wherein the data range is a data range obtained based on reference data;
the determining the correction coefficient of each sub-area to be corrected according to the optical data of each sub-area to be corrected comprises the following steps:
determining the reference data according to the optical data of the plurality of sub-areas to be corrected;
and determining the correction coefficient of each sub-area to be corrected according to the reference data and the optical data of each sub-area to be corrected.
4. A multi-batch correction method as claimed in any one of claims 1 to 3, wherein the acquiring the display image of the target display area includes:
When the target display area displays preset display content, acquiring a display image when the target display area displays the preset display content, wherein the preset display content comprises display patterns respectively corresponding to each to-be-corrected sub-area.
5. The multi-batch correction method as claimed in claim 4, wherein the number of the preset display contents is plural, and each preset display content corresponds to a color;
the determining optical data of each sub-area to be corrected according to the display image comprises the following steps:
and determining the optical data of each sub-area to be corrected under the corresponding color according to the display image when the target display area displays the preset display content of each color.
6. A multi-batch correction method as claimed in any one of claims 1 to 3, wherein each of said sub-areas to be corrected is connected to a control device, respectively;
after determining the correction coefficient of each sub-area to be corrected according to the optical data of each sub-area to be corrected, the method comprises the following steps:
acquiring configuration information of the target display area, wherein the configuration information comprises a connection relation between each sub-area to be corrected and each control device;
Binding correction coefficients of each sub-region to be corrected with the identification numbers of the control equipment connected with the corresponding sub-region to be corrected according to the connection relation;
the correcting the corresponding sub-areas to be corrected according to the correction coefficients of each sub-area to be corrected respectively includes:
and according to the identification numbers bound by each correction coefficient, transmitting each correction coefficient to the control equipment corresponding to the bound identification number, so that the control equipment corrects the connected sub-area to be corrected.
7. A multi-batch correction method as claimed in any one of claims 1 to 3, wherein the terminal device is provided with image acquisition means;
the acquiring the display image of the target display area includes:
when the acquisition parameters of the image acquisition device meet preset imaging conditions, the image acquisition device is controlled to shoot the target display area, and the display image is obtained.
8. A multi-lot calibration apparatus, configured to a terminal device, the multi-lot calibration apparatus comprising:
the image acquisition unit is used for acquiring a display image of a target display area, wherein the target display area comprises a plurality of sub-areas to be corrected, each sub-area to be corrected comprises a plurality of light points, and batches to which at least two sub-areas to be corrected belong are different;
An optical data determining unit, configured to determine optical data of each sub-area to be corrected according to the display image;
the correction coefficient determining unit is used for determining a correction coefficient of each sub-area to be corrected according to the optical data of each sub-area to be corrected, and the correction coefficients are used for calibrating the optical data of the corresponding sub-areas to be corrected to the same data range;
and the multi-batch correction unit is used for correcting the corresponding sub-areas to be corrected according to the correction coefficients of each sub-area to be corrected.
9. Terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the multi-batch correction method according to any of claims 1 to 7 when the computer program is executed.
10. A display system, comprising a terminal device and a display screen;
the terminal device is configured to correct a target display area of the display screen according to the multi-batch correction method of any one of claims 1 to 7, where the target display area is a part or all of the display area of the display screen.
11. The display system of claim 10, wherein the display system further comprises a control device;
the control device is used for receiving the correction coefficient sent by the terminal device and correcting the connected sub-area to be corrected.
12. The display system of claim 11, wherein the display system,
the control equipment is used for acquiring the original image data of the connected sub-area to be corrected; converting the original image data into gray data; correcting the gray data by using the correction coefficient to obtain corrected gray data; and controlling the connected sub-region to be corrected to display the corrected gray data.
13. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the multi-batch correction method of any one of claims 1 to 7.
CN202310342417.5A 2023-03-31 2023-03-31 Multi-batch correction method, device, terminal equipment, system and storage medium Pending CN116434688A (en)

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