CN109658862B - LED box brightness and chrominance correction method and system - Google Patents
LED box brightness and chrominance correction method and system Download PDFInfo
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- CN109658862B CN109658862B CN201811623694.9A CN201811623694A CN109658862B CN 109658862 B CN109658862 B CN 109658862B CN 201811623694 A CN201811623694 A CN 201811623694A CN 109658862 B CN109658862 B CN 109658862B
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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
- G09G3/22—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]
Abstract
The invention relates to the technical field of LED box brightness and chrominance correction, in particular to a method and a system for correcting the brightness and chrominance of an LED box. The LED box brightness and chrominance correction method comprises the steps of (1) extracting a reference box body, (2) correcting a single reference box body, (3) splicing an LED display screen, (4) introducing a reference box correction coefficient, and (5) carrying out photographing analysis to generate an entire screen correction coefficient. The LED box brightness and chrominance correction system comprises a reference box body, a corrected box body, a brightness and chrominance acquisition terminal and a control processing terminal, and realizes brightness and chrominance correction among the LED box bodies.
Description
Technical Field
The invention relates to the technical field of LED box brightness and chrominance correction, in particular to a method and a system for correcting the brightness and chrominance of an LED box.
Background
Due to the discreteness and attenuation of the LED, the discreteness of circuit components and the like, the brightness and the chromaticity of the LED display screen are inconsistent, and the display quality is seriously influenced. In order to overcome the problem of non-uniformity of brightness and chromaticity of the LED display screen, a point-by-point correction technology is developed at the same time, the development is rapid, the uniformity of the LED display screen can be obviously improved, and the display quality is improved. The prior art calibration techniques can be broadly divided into two types according to application: one is box-by-box correction on the production line, namely box correction; the other is large screen correction on site, which is difficult to be widely applied because the large screen correction is limited by complicated and variable site environment and remote technical support. And the box body correction does not generate difference of visual angle uniformity, and the method has remarkable advantages compared with large-screen correction. The existing box body correction aims to eliminate the brightness and chromaticity difference inside the box body and between the box bodies, and the display quality of the spliced LED display screen can be greatly improved. The box body correction technology has gradually become an indispensable important link in the manufacturing process of the LED box body, the development is extremely rapid, and the existing box body correction still has some problems:
the LED display screen industry generally has the situation of mixing a plurality of batches of bright and color difference boxes, the problem of bright and color difference inside the boxes can only be solved by currently adopted single-box correction, and the bright and color difference between the boxes cannot be solved; for example: the application number is 201410292607.1, which is a Chinese invention patent named as a method for correcting the brightness and the chrominance of an LED display screen and a method for correcting the brightness and the chrominance of an LED box body;
in the single-box correction of the prior art, no matter an industrial camera or a single-lens reflex camera is used for acquiring the brightness and chrominance information, the acquisition precision can not meet the production requirement, third-party equipment is required to calibrate the precision of camera data, or a calibration light source is adopted to calibrate the camera, however, the exposure difference still exists in each shooting when the single-box correction is carried out, and the environment error exists in the brightness and chrominance information between the LED boxes acquired each time; for example: the invention is a Chinese patent with the application number of 201610077983.8 and the name of an LED display module uniformity correction method.
Disclosure of Invention
The invention aims to provide a method for correcting the brightness and the chroma of an LED box body, which comprises the steps of selecting a reference box body as a reference, simultaneously collecting the brightness and the chroma information of an LED display screen formed by splicing the reference box body and a corrected box body, generating a whole-screen correction coefficient file corresponding to the corrected box body according to a reference box correction coefficient of the introduced reference box body, storing the whole-screen correction coefficient file into the corresponding corrected box body, and finishing the correction of the corrected box body, so that the brightness and the chroma differences among LED box bodies in different batches are eliminated, and the mixed use among the LED box bodies in any batch is realized. The invention also provides a system for correcting the brightness and the chrominance of the LED boxes, which can realize the brightness and the chrominance correction among the LED boxes and ensure the display quality of the LED display screen spliced by the LED boxes in any batch.
In order to achieve the purpose, the invention provides a method for correcting the brightness and the chrominance of an LED box, which comprises the following steps:
(1) one or more LED boxes are extracted from the LED boxes to serve as correction reference boxes, and the rest LED boxes serve as corrected boxes;
(2) performing single-box correction on one or more reference box bodies extracted in the step (1), and correspondingly storing a reference box correction coefficient file;
(3) splicing the reference box body and the corrected box body into an LED display screen;
(4) importing a reference box correction coefficient file corresponding to the reference box body for splicing the LED display screen in the step (3);
(5) and collecting the brightness and chrominance information of the LED display screen, generating a whole screen correction coefficient file corresponding to the corrected box body according to the introduced reference box correction coefficient of the reference box body, and storing the whole screen correction coefficient file to finish the correction of the corrected box body.
Further, in the step (3), a reference box body and a corrected box body are spliced into an LED display screen.
Further, the LED box brightness and chrominance correction method further comprises the step (6) of repeating the steps (3) to (5) to finish correction of a plurality of corrected boxes.
Further, in the step (1), a plurality of LED boxes are extracted from the LED boxes to serve as correction reference boxes; no bright color difference exists among the plurality of reference box bodies; and (4) taking the plurality of reference boxes as the reference boxes spliced with the corrected boxes in the step (3) by replacing operation in turn.
Further, in the step (3), the reference box body and the corrected box body are placed on the correcting table together and connected through a network cable, and then the LED display screen is spliced.
Further, the step (2) of correcting the reference box body in a single box comprises the following steps:
(21) newly building a single-box correction project;
(22) camera framing, wherein: the viewing area must not exceed the monitoring frame;
(23) respectively measuring light of red, green and blue colors, and adjusting camera parameters;
(24) photographing the reference box body;
(25) and analyzing, generating and storing a correction coefficient file.
Further, the step (25) specifically includes:
(251) calculating a reference box correction coefficient of the reference box according to the difference between the brightness and chrominance data of the reference box acquired by the camera and the brightness and chrominance correction target value;
(252) associating the box name of the reference box with the calculated reference box correction coefficient to generate a reference box correction coefficient file;
(253) and sending the reference box correction coefficient file to the reference box body for storage.
The method for correcting the brightness and the chrominance of the LED box body has the following beneficial effects:
1. according to the LED box brightness and chrominance correction method, the reference box body is selected as the reference, the LED display screen formed by splicing the reference box body and the corrected box body is photographed to acquire the brightness and chrominance information of the whole screen, then the correction coefficient file of the whole screen corresponding to the corrected box body is generated according to the analysis of the correction coefficient file of the introduced reference box body of the reference box body and stored in the corresponding corrected box body, and the correction of the corrected box body is completed, so that the brightness and chrominance difference among the LED box bodies of any batch is eliminated, and the mixed use among the LED box bodies of any batch is realized.
2. According to the LED box brightness correction method, single-box correction is carried out on one or more extracted reference boxes, so that the uniformity of brightness inside the boxes of the reference boxes is realized; when the number of the reference box bodies is multiple, no brightness difference between lamp points among the reference box bodies is ensured; the high consistency of the brightness and the chroma among the lamp points of the reference box body further ensures the consistency of the brightness and the chroma among the lamp points after the lamp points are corrected by the correction box body.
3. According to the LED box brightness and chrominance correction method, the plurality of LED boxes are selected as the reference boxes, and all the reference boxes operate in turn, so that the problem that the correction accuracy is influenced due to the fact that the temperature of the reference box is increased because the same reference box operates when a large number of corrected boxes are corrected is avoided.
4. According to the LED box brightness and chrominance correction method, a third-party device or a calibration light source calibration camera is not needed, the reference box body is used as the reference box, and the interference of external environments such as exposure errors and the like is avoided when the brightness and chrominance information is acquired by photographing, so that the high consistency of the brightness and chrominance of the corrected box bodies in any batch is ensured, and the display quality of the LED display screen formed by the LED box bodies in any batch in a mixed mode is further improved.
The invention also provides an LED box brightness and chroma correction system applying the LED box brightness and chroma correction method, which comprises a reference box, a corrected box, a brightness and chroma acquisition terminal and a control processing terminal, wherein: the reference box body is electrically connected with the corrected box body to be spliced into an LED display screen; the brightness and chrominance acquisition terminal is electrically connected with the control processing terminal and is used for acquiring the brightness and chrominance information of the whole screen of the LED display screen and transmitting the brightness and chrominance information to the control processing terminal for storage and/or analysis; the control processing terminal is electrically connected with the corrected box body and used for leading in a reference box correction coefficient file of the reference box body, generating a whole-screen correction coefficient file of the corrected box body according to the reference box correction coefficient and the whole-screen brightness and chrominance data of the LED display screen, and transmitting the whole-screen correction coefficient file to the corrected box body for storage and application.
Further, the reference box body is provided with a first receiving device for receiving and storing the reference box correction coefficient file; the corrected box body is provided with a second receiving device for receiving and storing the whole screen correction coefficient file; the control processing terminal is provided with a sending device used for sending the whole screen correction coefficient file to the corrected box body.
Further, the bright and chroma acquisition terminal is a camera; the control processing terminal is a PC.
The LED box body brightness and chrominance correction system realizes brightness and chrominance correction among LED box bodies in any batch, ensures the display quality of an LED display screen formed by splicing the LED box bodies in any batch, and further realizes mixed use among the LED box bodies in any batch.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the steps of the method for correcting the brightness and chromaticity of an LED box according to the present invention;
FIG. 2 is a flowchart of the steps for single bin calibration of the reference bin of the present invention;
FIG. 3 is a flowchart of the reference box correction factor file generation for the reference box of the present invention;
FIG. 4 is a schematic layout of the system for correcting the brightness and chromaticity of an LED box according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a method for correcting luminance and chrominance of an LED box according to an embodiment of the present invention includes the following steps:
step S1: in the LED box bodies, one or more LED box bodies are extracted to serve as correction reference box bodies, and the rest LED box bodies are corrected box bodies. Specifically, one or more LED boxes are selected from the LED boxes in the same batch as a correction reference box, and the rest LED boxes in different batches are corrected boxes; preferably, in the same batch of LED boxes, a plurality of LED boxes are extracted as correction reference boxes, and there is no bright color difference among the reference boxes, that is, there is no bright color difference among the whole reference boxes; and replacing the plurality of reference boxes by turns to be the reference boxes spliced with the corrected boxes in the step S3, so that the problem that the correction accuracy is influenced due to the fact that the temperature of the reference boxes is increased by adopting the same reference box operation when a large number of corrected boxes are corrected is avoided.
Step S2: and (4) performing single-box correction on one or more reference boxes extracted in the step (S1), and correspondingly storing the reference box correction coefficient files to the corresponding reference box receiving cards. Specifically, since the lighting chromaticity of each lamp in the reference box is not uniform although there is no difference in the lighting chromaticity among the entire reference boxes, the reference box single box correction of step S2 is required, and after the single box correction, the plurality of reference boxes have different correction coefficient files corresponding to each other, and there is no difference in the lighting chromaticity among the lamps among the boxes.
Step S3: and splicing the reference box body and the corrected box body into the LED display screen. Specifically, a reference box body and a corrected box body are placed on a correction platform together and connected through a network cable to be spliced into an LED display screen, the corrected box body is corrected by taking the reference box body as a reference, the brightness and the chroma of the residual corrected box bodies are ensured to be consistent with the brightness and the chroma of the reference box body, and then the brightness and the chroma of the LED box bodies in any batch are consistent; the placing sequence of the reference box body and the corrected box body has no requirement, and the reference box body and the corrected box body can be arranged on the left and right, the right and left, the upper and lower parts and the upper and lower parts. Of course, on the basis of the invention, a plurality of reference box bodies and a plurality of corrected box bodies can be spliced into an LED display screen, so that simultaneous correction of the plurality of corrected box bodies is realized, and the invention also belongs to the protection scope of the invention.
Step S4: and importing a reference box correction coefficient file corresponding to the reference box body used for splicing the LED display screen in the step S3. The generation of the reference box correction coefficient file can be realized by those skilled in the art according to the prior art, and of course, various analysis algorithms can be designed by themselves or realized based on software, and the invention is not limited in particular.
Step S5: and photographing and collecting brightness and chrominance information of the LED display screen, generating a whole screen correction coefficient file corresponding to the corrected box body according to the introduced reference box correction coefficient of the reference box body, storing the whole screen correction coefficient file into a corresponding corrected box body receiving card for storage and application, and finishing correction of the corrected box body. Specifically, the computer terminal/PC imports a corresponding reference box correction coefficient file (the reference box correction coefficient file includes information such as a reference box correction coefficient, a name of a corresponding reference box, a receiving card number, etc.), controls the camera to photograph the LED display screen, analyzes luminance and chrominance information of the reference box and the corrected box collected by the photographed photograph based on an image analysis method, generates a whole-screen correction coefficient file based on the imported reference box correction coefficient of the reference box, so that the whole screen of the spliced LED display screen has no luminance and chrominance difference, and stores the generated whole-screen correction coefficient file to a corresponding receiving card of the corrected box (the whole-screen correction coefficient file may include information such as the whole-screen correction coefficient, the name of the corresponding corrected box, the receiving card number, etc.); therefore, when the same corrected box body adopts different reference box bodies as the reference, the generated whole-screen correction coefficients are different due to the difference of the reference box correction coefficients of the reference box bodies; in the scheme, a plurality of reference box bodies are preferably selected and are subjected to correction operation in turn, so that each corrected box body has a corresponding whole-screen correction coefficient.
Step S6: repeating steps S3 through S5 completes the correction of the plurality of corrected boxes.
According to the LED box brightness and chrominance correction method, the reference box body is selected as the reference, the LED display screen formed by splicing the reference box body and the corrected box body is photographed to acquire the brightness and chrominance information of the whole screen, then the correction coefficient file of the whole screen corresponding to the corrected box body is generated according to the analysis of the correction coefficient file of the introduced reference box body of the reference box body and stored in the corresponding corrected box body, and the correction of the corrected box body is completed, so that the brightness and chrominance difference among the LED box bodies of any batch is eliminated, and the mixed use among the LED box bodies of any batch is realized. In addition, according to the LED box brightness and chrominance correction method, a third-party device or a calibration light source calibration camera is not needed, the reference box is used as the reference box, and the interference of external environments such as exposure errors and the like is avoided when the brightness and chrominance information is acquired by photographing, so that the high consistency of the brightness and chrominance of the corrected boxes in any batch is ensured, and the display quality of the LED display screen formed by the LED boxes in any batch in a mixed mode is further improved.
Further, as shown in fig. 2, the step S2 of calibrating the reference box with one box comprises the following steps:
step S21: newly building a single-box correction project;
step S22: camera framing, wherein: the viewing area must not exceed the monitoring frame;
step S23: respectively measuring light of red, green and blue colors, and adjusting camera parameters;
step S24: photographing the reference box body;
step S25: and analyzing and generating a reference box correction coefficient file, and storing the reference box correction coefficient file into the reference box.
Specifically, firstly, hardware connection is carried out, the reference box body is connected with sending equipment through a network cable, the sending equipment is connected with a PC through a USB, and the camera is connected with the PC through the USB; installing single-box correction software on the PC, opening the software, newly building a single-box correction project, setting the size of a single box body, and completing a creation guide of the single box body; then, connecting a camera, starting to view, wherein a view area does not exceed a monitoring frame, and then respectively performing photometry on red, green and blue colors and adjusting camera parameters; and finally, controlling the camera by the PC to shoot the picture and acquire the brightness and chrominance data of the reference box body, starting analysis, generating a reference box correction coefficient file and storing the reference box correction coefficient file in a corresponding reference box body receiving card.
Further, as shown in fig. 3, step S25 specifically includes:
step S251: calculating a reference box correction coefficient of the reference box according to the difference between the brightness and chrominance data of the reference box acquired by the camera and the brightness and chrominance correction target value;
step S252: associating the box name of the reference box with the calculated reference box correction coefficient to generate a correction coefficient file;
step S253: and sending the reference box correction coefficient file to a reference box receiving card for storage and application.
Specifically, the target value of the brightness and the chromaticity of the LED boxes can be calculated according to the common brightness and the chromaticity values of the LED boxes, and the specific calculation method can be designed by itself with reference to the prior art; in addition, the target value of the brightness of the LED box body can also be an empirical summary value of a manufacturer or a default value in the correction software. The correction coefficient file is a relational file or a database of the box name and the receiving card name of the reference box and the correction coefficient of the reference box, can be directly stored in a PC (personal computer), and can also be imported into correction software or stored in the receiving card of the reference box for storage and application at any time according to needs.
As shown in fig. 4, the LED box luminance and chrominance correction system of the present invention includes a reference box, a corrected box, a luminance and chrominance acquisition terminal, and a control processing terminal, wherein: the reference box body is electrically connected with the corrected box body to be spliced into an LED display screen; the brightness and chrominance acquisition terminal is electrically connected with the control processing terminal and is used for acquiring the brightness and chrominance data of the whole screen of the LED display screen and transmitting the brightness and chrominance data to the control processing terminal for storage or analysis; the control processing terminal is electrically connected with the corrected box body and used for importing the reference box correction coefficient file, generating the whole-screen correction coefficient file of the corrected box body according to the reference box correction coefficient file and the whole-screen brightness and chrominance data of the LED display screen and transmitting the whole-screen correction coefficient file to the corrected box body for storage.
Further, the reference box body is provided with a first receiving device for receiving and storing the reference box correction coefficient file; the corrected box body is provided with a second receiving device for receiving and storing the whole screen correction coefficient file; the control processing terminal is provided with a sending device used for sending the whole screen correction coefficient file to the corrected box body. Wherein: the first receiving device and the second receiving device can be receiving cards carried by the reference box body and the corrected box body, and the LED box bodies and the receiving cards are named respectively, so that matching association with the correction files is facilitated subsequently.
Further, the bright and chroma acquisition terminal is a camera; the control processing terminal is a PC, and single-box correction software for correcting a reference box body in a single box mode and whole-screen correction software for correcting a corrected box body can be installed on the control processing terminal according to actual conditions, so that single-box correction is achieved, a reference box correction coefficient file is correspondingly generated, whole-screen correction is achieved, and a whole-screen correction coefficient file is correspondingly generated.
Specifically, the reference box body is connected with the corrected box body through a network cable to be spliced into an LED display screen; the brightness and chrominance acquisition terminal is connected with the control processing terminal through a USB and is used for acquiring the whole screen brightness and chrominance information (namely photographing) of the LED display screen and transmitting the whole screen brightness and chrominance information to the control processing terminal for storage and/or generating whole screen brightness and chrominance data by adopting an image analysis method for analysis; the control processing terminal is connected with the sending device through a USB, and the sending device is connected with the corrected box body through a network cable, so that the control processing terminal imports the reference box correction coefficient file of the corresponding reference box body, generates the whole screen correction coefficient file of the corrected box body according to the imported reference box correction coefficient file and the whole screen brightness and chrominance data of the LED display screen, and automatically transmits the whole screen correction coefficient file to the corrected box body for storage and application.
The LED box body brightness and chrominance correction system realizes brightness and chrominance correction among the LED box bodies, ensures that the LED box bodies of any batch are spliced into the display quality of an LED display screen, and further realizes the mixed use among the LED box bodies of any batch.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (6)
1. A method for correcting the brightness and the chrominance of an LED box body is characterized by comprising the following steps:
(1) extracting one or more LED boxes as correction reference boxes from the LED boxes, wherein the rest LED boxes are corrected boxes, in the step (1), extracting a plurality of LED boxes as correction reference boxes from the LED boxes, replacing the plurality of reference boxes in turn as reference boxes spliced with the corrected boxes, and the plurality of reference boxes are LED boxes in the same batch without brightness and color difference;
(2) performing single-box correction on one or more reference box bodies extracted in the step (1), and correspondingly storing a reference box correction coefficient file;
(3) splicing the reference box body and the corrected box body into an LED display screen, wherein in the step (3), one reference box body and one corrected box body are spliced into one LED display screen;
(4) importing a reference box correction coefficient file corresponding to the reference box body for splicing the LED display screen in the step (3);
(5) collecting brightness and chrominance information of the LED display screen, generating and storing an entire-screen correction coefficient file corresponding to the corrected box body according to the introduced reference box correction coefficient of the reference box body, and finishing the correction of the corrected box body, wherein each corrected box body corresponds to different entire-screen correction coefficients;
wherein, the step (2) of correcting the single box of the reference box body comprises the following steps: (21) newly building a single-box correction project; (22) camera framing, wherein: the viewing area must not exceed the monitoring frame; (23) respectively measuring light of red, green and blue colors, and adjusting camera parameters; (24) photographing the reference box body; (25) analyzing and generating a reference box correction coefficient file, and storing the reference box correction coefficient file;
the step (25) specifically includes: (251) calculating a reference box correction coefficient of the reference box according to the difference between the brightness and chrominance data of the reference box acquired by the camera and the brightness and chrominance correction target value; (252) associating the box name of the reference box with the calculated reference box correction coefficient to generate a reference box correction coefficient file; (253) sending a reference box correction coefficient file to a reference box body for storage; the target brightness correction value is a preset manufacturer experience summary value or a default value in correction software.
2. The LED box luminance and chrominance correction method according to claim 1, further comprising the step (6) of repeating the steps (3) to (5) to complete the correction of a plurality of corrected boxes.
3. The LED box brightness and chroma correction method according to claim 1, wherein in the step (3), the reference box and the corrected box are placed on a correction table together and connected through a network cable, and then the LED display screens are spliced.
4. An LED box brightness and chrominance correction system applying the LED box brightness and chrominance correction method of any one of claims 1-3, comprising a reference box, a corrected box, a brightness and chrominance acquisition terminal and a control processing terminal, wherein:
the reference box body is electrically connected with the corrected box body to be spliced into an LED display screen;
the brightness and chrominance acquisition terminal is electrically connected with the control processing terminal and is used for acquiring the whole screen brightness and chrominance information of the LED display screen and transmitting the whole screen brightness and chrominance information to the control processing terminal for storage and/or analysis;
the control processing terminal is electrically connected with the corrected box body and used for importing a reference box correction coefficient file of the reference box body, generating a whole screen correction coefficient file of the corrected box body according to the reference box correction coefficient and the whole screen brightness and chroma data of the LED display screen and transmitting the whole screen correction coefficient file to the corrected box body for storage and application.
5. The LED box body brightness and chrominance correction system of claim 4, wherein:
the reference box body is provided with a first receiving device for receiving and storing a reference box correction coefficient file;
the corrected box body is provided with a second receiving device for receiving and storing the whole screen correction coefficient file;
and the control processing terminal is provided with a sending device used for sending the whole screen correction coefficient file to the corrected box body.
6. The LED box luminance and chrominance correction system of claim 4,
the brightness and chrominance acquisition terminal is a camera;
the control processing terminal is a PC.
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| CN112542132A (en) * | 2020-11-17 | 2021-03-23 | 长春希达电子技术有限公司 | LED display screen single-box correction optical parameter consistency correction method |
| CN112669769A (en) * | 2020-12-29 | 2021-04-16 | 深圳Tcl数字技术有限公司 | Display screen box body parameter correction method and device, equipment and storage medium |
| CN112951143B (en) * | 2021-03-31 | 2024-03-15 | 西安诺瓦星云科技股份有限公司 | Display screen correction method and device |
| CN114170941B (en) * | 2021-12-09 | 2023-10-31 | 惠州华星光电显示有限公司 | Display brightness matching method and display |
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