LED display screen dynamic correction method, device and equipment

Abstract

The invention provides an LED display screen dynamic correction method, device and equipment. The method includes; obtaining the lightening time of each module in real time according to a certain time interval; the LED display screen is composed of a plurality of modules. Inputting the module lightening time obtained in real time into a pre-constructed aging evaluation model, and predicting a stimulation value of each module at a corresponding moment; and correcting the brightness of each module in real time according to the stimulus value of each module at the corresponding moment. According to the invention, the module lightening time obtained in real time is input into the pre-constructed aging evaluation model, the current stimulation value of each module is predicted through the aging evaluation model, and the color of the corresponding module is compensated based on the current stimulation value of each module. Therefore, even if the corrected and compensated module is used for a period of time, the displayed color brightness of the module can still be kept as new, so that the correction accuracy and effectiveness are improved, and the use experience of a user is finally improved.

Description

Technical Field

[0001] The present invention relates to the technical field of LED display screen processing, and in particular to a method, device and equipment for dynamic correction of an LED display screen. Background Art

[0002] As an important part of modern information display technology, LED display screens are widely used in indoor and outdoor advertising, information release, stage performances and other fields due to their high brightness, high contrast, bright colors and wide viewing angle. However, as the use time increases, LED display screens will inevitably experience aging, resulting in gradual attenuation of screen brightness and color deviation, which in turn affects the display effect and user experience.

[0003] At present, there are two main ways to deal with the aging of LED displays on the market: one is to regularly replace aging LED lamps or modules, but this is not only costly, but frequent replacement will affect the normal use of the display; the other is to adjust the screen brightness through preset compensation parameters, but this method cannot accurately reflect the dynamic changes of screen aging, so the compensation effect is limited. Summary of the invention

[0004] The present invention provides a method, a device and equipment for dynamic correction of an LED display screen, which are used to solve the defect of poor correction effect of an LED display screen in the prior art.

[0005] The present invention provides a method for dynamic correction of an LED display screen, comprising:

[0006] According to a certain time interval, the lighting time of each module is obtained in real time; the LED display screen is composed of a number of the above modules;

[0007] Input the module lighting time obtained in real time into the pre-built aging evaluation model to predict the stimulus value of each module at the corresponding moment;

[0008] According to the stimulus value of each module at the corresponding moment, the brightness of each module is corrected in real time.

[0009] According to a dynamic correction method for an LED display screen provided by the present invention, the construction of the aging evaluation model includes:

[0010] Obtain the aging degree of the module within a preset time period;

[0011] Obtaining a stimulation value of the module within the preset time period;

[0012] The aging assessment model is established according to the aging degree of the module within the preset time period and the screen stimulation value at the corresponding moment.

[0013] According to a dynamic correction method for an LED display screen provided by the present invention, the step of obtaining the aging degree of a module within a preset time period includes:

[0014] Get the average brightness of each frame of the module;

[0015] According to the average brightness of each frame of the module, the average brightness of the aging degree of the module in the preset time period is determined, and the average brightness of the module in the preset time period is used as the aging degree of the module.

[0016] According to a dynamic correction method for an LED display screen provided by the present invention, the current stimulus value of each module is predicted based on the lighting time of each module using a preset aging evaluation model, including:

[0017] According to the lighting time of each module, the aging degree of each module at the corresponding lighting time is predicted by using a preset aging evaluation model;

[0018] According to the aging degree of each module at the corresponding lighting time, the stimulation value of each module at the lighting time is determined respectively.

[0019] According to a dynamic correction method for an LED display screen provided by the present invention, the real-time correction of the brightness of each module according to the stimulus value of each module at a corresponding moment comprises:

[0020] Determine the compensation coefficient according to the stimulation value of each module at the corresponding moment and the corresponding ideal stimulation value;

[0021] The brightness of the corresponding module is compensated according to the compensation coefficient.

[0022] According to a dynamic correction method for an LED display screen provided by the present invention, the time interval is determined according to the use frequency of the LED display screen and the light decay degree of the lamp beads of each module.

[0023] The present invention also provides a LED display screen dynamic correction device, comprising:

[0024] An acquisition unit is used to acquire the lighting time of each module in real time at a certain time interval; the LED display screen is composed of a plurality of the above modules;

[0025] A prediction unit, used to predict the current stimulus value of each module according to the lighting time of each module using a preset aging evaluation model;

[0026] The correction unit is used to correct the corresponding module according to the current stimulation value of each module.

[0027] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the LED display screen dynamic correction method described in any one of the above methods is implemented.

[0028] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the dynamic correction method for an LED display screen as described in any one of the above is implemented.

[0029] The present invention also provides a computer program product, including a computer program, wherein when the computer program is executed by a processor, the LED display screen dynamic correction method as described above is implemented.

[0030] The LED display screen dynamic correction method, device and equipment provided by the present invention input the module lighting time obtained in real time into a pre-built aging evaluation model, predict the current aging degree of the module through the aging evaluation model, and determine the current stimulation value of each module based on the predicted aging degree, and then compensate the color of the corresponding module based on the current stimulation value of each module, so that even after a period of use, the color brightness displayed by the corrected and compensated module may still remain as good as new, thereby improving the accuracy and effectiveness of the correction, and ultimately improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the process flow of the dynamic correction method for an LED display screen provided by the present invention;

[0032] Figure 2 A structural block diagram of a dynamic correction device for an LED display screen provided by an embodiment of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Figure 1 The following is a flow chart of the dynamic correction method for LED display screen provided by the present invention, as shown in FIG. Figure 1 As shown, the method comprises the following steps:

[0036] Step 101: acquiring the lighting time of each module in real time at a certain time interval; the LED display screen is composed of a plurality of the modules.

[0037] Specifically, the lighting time of a module refers to the time period from when the LED module is powered on to when its luminous brightness reaches the normal value. The lighting time can be recorded in real time by built-in sensors or external monitoring equipment during the operation of each module. By setting a reasonable time interval (for example, every hour or every day), regularly summarizing and analyzing the lighting time data of the module, the accuracy and completeness of the data can be ensured.

[0038] As the LED display screen is used for a longer time, the degree of aging of the LED display screen will continue to change. Real-time acquisition of the lighting time of each module can ensure that the correction strategy always matches the current aging state, thereby improving the accuracy and effectiveness of the LED display screen correction.

[0039] The embodiment of the present invention divides the LED display screen into several modules, uses the statistical module installed in the field module to count the lighting time of each module respectively, and based on the lighting time of each module, calibrates the corresponding modules respectively, thereby obtaining a calibrated LED display screen.

[0040] Step 102: According to the lighting time of each module, the stimulus value of each module at the corresponding moment is predicted using a preset aging evaluation model.

[0041] Specifically, the so-called aging evaluation model has the lighting time of the module as input and the stimulus value of the module as output. For example, suppose an LED display screen is composed of 8 modules. For module 1 of the LED display screen, its lighting time is T0 = 1S, T1 = 2S, T3 = 3S, ... TN, then the stimulus value corresponding to module 1 at time T0 is X 10 Y 10 Z 1O , the stimulus value corresponding to T1 is X 11 Y 11 Z 11 , ... the stimulus value corresponding to TN is X 1N Y 1N Z 1N For the module 2 of the LED display, its lighting time is T0 = 1S, T1 = 2S, T3 = 3S, ... TN, then the stimulus value corresponding to the module 2 at time T0 is X 20 Y 20 Z 2O , the stimulus value corresponding to T1 is X 21 Y 21 Z 21 , ... the stimulus value corresponding to TN is X 2N Y2N Z 2N ..., for the LED display module 10, its lighting time is T0 = 1S, T1 = 2S, T3 = 3S, ... TN, then the stimulus value corresponding to the module 8 at time T0 is X 80 Y 80 Z 8O , ... the stimulus value corresponding to TN is X 8N Y 8N Z 8N ….

[0042] The embodiment of the present invention can predict the stimulation value corresponding to each module of the LED display screen at the corresponding lighting time through a preset aging evaluation model, so that the predicted stimulation value can be compared with the ideal stimulation value of the module, and the corresponding module can be calibrated according to the comparison result.

[0043] Step 103: calibrate the corresponding module according to the current stimulation value of each module.

[0044] The LED display screen dynamic correction method provided by the present invention inputs the module lighting time obtained in real time into a pre-built aging evaluation model, predicts the current aging degree of the module through the aging evaluation model, and determines the current stimulation value of each module based on the predicted aging degree, and then compensates the color of the corresponding module based on the current stimulation value of each module, so that even after a period of use, the color brightness displayed by the corrected and compensated module may still remain as good as new, thereby improving the accuracy and effectiveness of the correction, and ultimately improving the user experience.

[0045] The following is an introduction to how to build an aging assessment model:

[0046] First, the aging degree of the module within a preset time period is obtained; secondly, the stimulation value of the module within the preset time period is obtained; finally, the aging assessment model is established according to the aging degree of the module within the preset time period and the screen stimulation value at the corresponding moment.

[0047] Specifically, the average brightness of each frame of the module is obtained; based on the average brightness of each frame of the module, the average brightness of the aging degree of the module in the preset time period is determined, and the average brightness of the module in the preset time period is used as the aging degree of the module. For example, assuming that the size of a module is M*N, the average brightness of each frame of the module is calculated according to the following formula (1):

[0048]

[0049] Among them, Plumi(i,j) represents the brightness of the light point with index i, j;

[0050] The average brightness of the M*N modules in the time period T is integrated according to the picture frames to obtain the aging degree E of the modules in the time period T. For details, see formula (2):

[0051]

[0052] Secondly, use the light gun to measure the stimulus value XYZ corresponding to each moment in the time period T of the module.

[0053] Finally, according to the characteristic relationship between the aging degree E of the module in the time period T and the stimulus value XYZ measured by the light gun at the corresponding moment, a suitable curve is selected to fit the model of the module three stimulus values ​​XYZ changing with the aging degree E, thereby obtaining the aging assessment model.

[0054] The following describes how to use the preset aging assessment model to predict the current stimulus value of each module:

[0055] First, according to the lighting time of each module, the preset aging evaluation model is used to predict the aging degree of each module at the corresponding lighting time; secondly, according to the aging degree of each module at the corresponding lighting time, the stimulation value of each module at the lighting time is determined.

[0056] Specifically, the real-time lighting time data is first input into the aging assessment model, and the aging degree of each module is calculated by the model. Then, according to the aging degree of each module, the three stimulus values ​​XYZ of each module at the corresponding moment are calculated respectively. The three stimulus values ​​XYZ at the corresponding moment are the actual stimulus values ​​predicted by the model when the lighting time reaches a certain value. Due to the aging of the screen, the stimulus value is different from the ideal stimulus value designed by the module at the factory. Therefore, the embodiment of the present invention determines the real-time stimulus value by the real-time lighting time of the module, and compares the real-time stimulus value with the ideal stimulus value to obtain a compensation coefficient, and uses the compensation coefficient to correct the corresponding module, so that the color brightness of the calibrated module can show the best state.

[0057] The following introduces how to perform real-time correction on the brightness of each module according to the stimulation value of each module at the corresponding moment, specifically including: determining a compensation coefficient according to the stimulation value of each module at the corresponding moment and the corresponding ideal stimulation value; and compensating the brightness of the corresponding module according to the compensation coefficient.

[0058] Specifically, the compensation coefficient is determined according to the following formula:

[0059] M=XYZ Dest / XYZ T (3)

[0060]

[0061] Among them, XYZ Dest The ideal stimulation value of the module, which can be set when it is launched; XYZ T is the stimulus value corresponding to the module at time T, and M is the compensation coefficient, which is used to adjust the brightness of the LED display to compensate for the light decay caused by module aging. T When aging occurs over time, by updating M, the module's XYZ Dest Remain unchanged. Due to XYZ T It is the stimulus value corresponding to the moment T. Therefore, the stimulus values ​​at different moments have corresponding compensation coefficients that are different. Thus, the present application can correct and compensate the brightness of the module according to different compensation coefficients corresponding to different moments, thereby effectively improving the accuracy and effectiveness of the correction.

[0062] Furthermore, the time interval is determined according to the usage frequency of the LED display screen and the light decay degree of the lamp beads of each module.

[0063] Specifically, due to the relatively slow light decay of the lamp beads when the display screen is used less frequently, the color brightness of the module is not much different from the ideal state. At this time, frequently collecting the lighting time of the module and adjusting the brightness may only bring a small correction effect, and may even introduce new problems due to errors in the adjustment process. And frequent collection and adjustment of module brightness requires additional power consumption, which not only increases the operating cost of the system, but may also have an adverse impact on the environment. In addition, the LED display screen is composed of multiple modules, each of which contains a certain number of LED lamp beads, which will only emit light after receiving a signal. Therefore, the present application can formulate an intelligent adjustment strategy based on the frequency of use of the display screen. For example, when the display screen is used less frequently, the frequency of collection and brightness adjustment can be reduced; when the frequency of use is high, the number of collection and adjustment is appropriately increased to ensure the display effect and extend the service life.

[0064] The LED display screen dynamic correction method provided by the present invention determines the time interval for obtaining the module lighting time through the use frequency of the display screen, which can effectively reduce the energy consumption of the system.

[0065] The LED display screen dynamic correction device provided by the present invention is described below. The LED display screen dynamic correction device described below and the LED display screen dynamic correction method described above can be referenced to each other.

[0066] Figure 2 The structural block diagram of the LED display screen dynamic correction device provided by the embodiment of the present invention is as follows: Figure 2 As shown, the device comprises:

[0067] The acquisition unit 201 is used to acquire the lighting time of each module in real time according to a certain time interval; the LED display screen is composed of a plurality of the modules;

[0068] The prediction unit 202 inputs the module lighting time acquired in real time into a pre-built aging evaluation model to predict the stimulus value of each module at the corresponding moment;

[0069] The correction unit 203 is used to correct the brightness of each module in real time according to the stimulation value of each module at a corresponding moment.

[0070] Figure 3 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 3 As shown, the electronic device may include: a processor 310, a communication interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communication interface 320 and the memory 330 communicate with each other through the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the LED display screen dynamic correction method, which includes:

[0071] According to a certain time interval, the lighting time of each module is obtained in real time; the LED display screen is composed of a number of the above modules;

[0072] Input the module lighting time acquired in real time into the pre-built aging evaluation model to predict the current stimulus value of each module;

[0073] According to the current stimulus value of each module, the brightness of the corresponding module is corrected.

[0074] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0075] On the other hand, the present invention further provides a computer program product, the computer program product includes a computer program, the computer program can be stored in a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the LED display screen dynamic correction method provided by the above methods, the method includes:

[0076] According to a certain time interval, the lighting time of each module is obtained in real time; the LED display screen is composed of a number of the above modules;

[0077] Input the module lighting time obtained in real time into the pre-built aging evaluation model to predict the stimulus value of each module at the corresponding moment;

[0078] According to the stimulus value of each module at the corresponding moment, the brightness of each module is corrected in real time.

[0079] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the LED display screen dynamic correction method provided by the above methods is implemented, and the method includes:

[0080] According to a certain time interval, the lighting time of each module is obtained in real time; the LED display screen is composed of a number of the above modules;

[0081] Input the module lighting time obtained in real time into the pre-built aging evaluation model to predict the stimulus value of each module at the corresponding moment;

[0082] According to the stimulus value of each module at the corresponding moment, the brightness of each module is corrected in real time.

[0083] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0084] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for dynamic correction of LED display screen, characterized in that: include: According to a certain time interval, the lighting time of each module is obtained in real time; the LED display screen is composed of a number of the above modules; Input the module lighting time obtained in real time into the pre-built aging evaluation model to predict the stimulus value of each module at the corresponding moment; According to the stimulus value of each module at the corresponding moment, the brightness of each module is corrected in real time.

2. The LED display screen dynamic correction method according to claim 1, characterized in that: The construction of the aging assessment model includes: Obtain the aging degree of the module within a preset time period; Obtaining a stimulation value of the module within the preset time period; The aging assessment model is established according to the aging degree of the module within the preset time period and the screen stimulation value at the corresponding moment.

3. The LED display screen dynamic correction method according to claim 2, characterized in that: The acquisition of the aging degree of the module within a preset time period includes: Get the average brightness of each frame of the module; According to the average brightness of each frame of the module, the average brightness of the aging degree of the module in the preset time period is determined, and the average brightness of the module in the preset time period is used as the aging degree of the module.

4. The LED display screen dynamic correction method according to claim 2 or 3, characterized in that: The step of predicting the current stimulus value of each module according to the lighting time of each module and using a preset aging evaluation model includes: According to the lighting time of each module, the aging degree of each module at the corresponding lighting time is predicted by using a preset aging evaluation model; According to the aging degree of each module at the corresponding lighting time, the stimulation value of each module at the lighting time is determined respectively.

5. The LED display screen dynamic correction method according to claim 1, characterized in that: The real-time correction of the brightness of each module according to the stimulus value of each module at the corresponding moment comprises: Determine the compensation coefficient according to the stimulation value of each module at the corresponding moment and the corresponding ideal stimulation value; The brightness of the corresponding module is compensated according to the compensation coefficient.

6. The LED display screen dynamic correction method according to claim 4, characterized in that: The time interval is determined according to the usage frequency of the LED display screen and the light decay degree of the lamp beads of each module.

7. A dynamic correction device for an LED display screen, characterized in that: include: An acquisition unit, used to acquire the lighting time of each module in real time at a certain time interval; The LED display screen is composed of several modules mentioned above; The prediction unit inputs the module lighting time obtained in real time into the pre-built aging evaluation model to predict the stimulus value of each module at the corresponding moment; The correction unit is used to perform real-time correction on the brightness of each module according to the stimulation value of each module at the corresponding moment.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the LED display screen dynamic correction method as claimed in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the LED display screen dynamic correction method as claimed in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the LED display screen dynamic correction method as claimed in any one of claims 1 to 6 is implemented.

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