Display correction method and assembly for IR-Drop of LED display screen

Abstract

The invention is suitable for the technical field of display screens, and provides a display correction method and assembly for IR-Drop of an LED display screen. The display correction method comprises the following steps: respectively obtaining original brightness data of RGB and W displayed when an LED display screen is in different gray scales, and obtaining RGB correction data and W correction data based on the original brightness data and a target gamma value; obtaining image data to be on the LED display screen, calculating a pixel RGB data proportion in the image data, and processing the RGB correction data and the W correction data based on the RGB data proportion to obtain real-time correction data; and based on the real-time correction data, correcting the image data, and sending the corrected image data to the LED display screen for display. According to the embodiment of the invention, the technical problem of poor display effect caused by IR-Drop can be relieved, and the display correction effect is improved.

Description

Technical Field

[0001] This application belongs to the technical field of LED display, and particularly relates to a display correction method and component for IR-Drop of an LED display screen. Background Art

[0002] With the development of LED (Light-Emitting Diode) display screens towards small pitch and high resolution, Mini-LED display screens and Micro-LED display screens are becoming increasingly competitive. In the fields of Micro-LED and Mini-LED displays, the display technology using the current drive method inevitably has a voltage drop characteristic, that is, IR-Drop. The voltage drop distribution shows that the farther away from the feeding end, the greater the voltage drop, the higher the brightness of the display screen, the greater the current, and the greater the voltage drop, which further affects the display effect of the display screen.

[0003] To solve this technical problem, related technologies will try to pre-obtain compensation data and then burn the compensation data into the driving chip to compensate the display data at the driving end. Although this method can solve or alleviate the above technical problems to a certain extent, this method of burning compensation data at the driving chip end has a limit on the number of times, is less flexible to implement, and it is also difficult to meet the requirements for the effect of display correction. Summary of the Invention

[0004] The embodiments of this application provide a display correction method and component for IR-Drop of an LED display screen, which can alleviate the problem of poor display effect caused by IR-Drop and improve the effect of display correction.

[0005] The first aspect of the embodiments of this application provides a display correction method for IR-Drop of an LED display screen, including: respectively obtaining the original brightness data of RGB and W when the LED display screen is at different gray levels, and obtaining RGB correction data and W correction data based on the original brightness data and a target gamma value; obtaining image data to be displayed on the LED display screen, and calculating the proportion of pixel RGB data in the image data, and processing the RGB correction data and the W correction data based on the proportion of the RGB data to obtain real-time correction data; correcting the image data based on the real-time correction data, and sending the corrected image data to the LED display screen for display.

[0006] In some embodiments of the first aspect, "processing the RGB correction data and the W correction data based on the proportion of the RGB data" includes: fusing the RGB correction data and the W correction data based on the proportion of the RGB data.

[0007] In some embodiments of the first aspect, the LED display screen includes a plurality of display modules, and the image data includes sub-image data of each of the display modules; wherein, "correcting the image data based on the real-time correction data and sending the corrected image data to the LED display screen for display" includes: correcting the sub-image data of each of the display modules in the image data based on the real-time correction data to obtain corrected sub-image data; and respectively sending each of the corrected sub-image data to the corresponding display module for display. In this way, display correction can be completed module by module at the control end, improving the effect of display correction.

[0008] In some embodiments of the first aspect, the real-time correction data includes sub-correction data of each of the display modules; wherein, "correcting the sub-image data of each of the display modules in the image data based on the real-time correction data to obtain corrected sub-image data" includes: dividing the image data into sub-image data of each of the display modules according to the screen matching information of the LED display screen; and respectively correcting the corresponding sub-image data according to the sub-correction data of each of the display modules to obtain the corrected sub-image data.

[0009] In some embodiments of the first aspect, the real-time correction data includes sub-correction data of each of the display modules; wherein, "correcting the sub-image data of each of the display modules in the image data based on the real-time correction data to obtain corrected sub-image data" includes: respectively correcting the corresponding sub-image data in the image data according to the sub-correction data of each of the display modules to obtain the corrected image data; and dividing the corrected image data into the corrected sub-image data according to the screen matching information of the LED display screen.

[0010] In some embodiments of the first aspect, "blending the RGB correction data and the W correction data based on the RGB data ratio to obtain real-time correction data" includes: determining a color saturation based on the RGB data ratio, where the color saturation is positively correlated with the degree of proximity of the ratios among R, G, and B; and blending the RGB correction data and the W correction data according to the color saturation to obtain the real-time correction data. In this way, the real-time correction data can be adapted to different color saturation situations of the display screen.

[0011] In some embodiments of the first aspect, "fusing the RGB correction data and the W correction data according to the color saturation to obtain the real-time correction data" includes: determining a fusion weight according to the color saturation, where the fusion weight includes a first weight of the RGB correction data and / or a second weight of the W correction data, the first weight is negatively correlated with the color saturation, and the second weight is positively correlated with the color saturation; fusing the RGB correction data and the W correction data according to the fusion weight to obtain the real-time correction data.

[0012] In some embodiments of the first aspect, "processing the RGB correction data and the W correction data based on the RGB data ratio to obtain real-time correction data" includes: determining the current correction type of the LED display screen among multiple preset correction types according to the RGB data ratio, where at least RGBW correction is included in the multiple preset correction types; if the current correction type is RGBW correction, processing the RGB correction data and the W correction data to obtain the real-time correction data.

[0013] In some embodiments of the first aspect, RGB correction and W correction are further included in the multiple preset correction types, and the display correction method further includes: if the current correction type is RGB correction, correcting the image data according to the RGB correction data and sending the corrected image data to the LED display screen for display; and / or, if the current correction type is W correction, correcting the image data according to the W correction data and sending the corrected image data to the LED display screen for display.

[0014] In some embodiments of the first aspect, the RGB correction data includes RGB correction data corresponding to each of multiple display gray levels, and the W correction data includes W correction data corresponding to each of multiple display gray levels; where "processing the RGB correction data and the W correction data based on the RGB data ratio to obtain real-time correction data" includes: determining the current display gray level among the multiple display gray levels; processing the RGB correction data corresponding to the current display gray level and the W correction data corresponding to the current display gray level based on the RGB data ratio to obtain the real-time correction data. In this way, display correction can be performed according to the current display gray level, making the display correction more accurate.

[0015] In some embodiments of the first aspect, "obtaining RGB correction data and W correction data based on the original luminance data and the target gamma value" includes: obtaining the bit depth of the screen position of the LED display screen; determining the target luminance data according to the bit depth of the screen position and the target gamma value; determining the RGB correction data according to the original luminance data of the RGB displayed by the LED display screen at different gray levels and the target luminance data; and determining the W correction data according to the original luminance data of the RGB and W displayed by the LED display screen at different gray levels and the target luminance data.

[0016] A display correction method for IR-Drop of an LED display screen provided in the second aspect of the embodiments of the present application is applied to a control device. The display correction method includes: obtaining RGB correction data and W correction data, where the RGB correction data and the W correction data are obtained based on the original luminance data of the RGB and W displayed by the LED display screen at different gray levels and the target gamma value; obtaining image data to be displayed on the LED display screen, and calculating the proportion of pixel RGB data in the image data, and processing the RGB correction data and the W correction data based on the proportion of the RGB data to obtain real-time correction data; and correcting the image data based on the real-time correction data, and sending the corrected image data to the LED display screen for display.

[0017] A display correction method for IR-Drop of an LED display screen provided in the third aspect of the embodiments of the present application is applied to a host computer. The display correction method includes: respectively obtaining the original luminance data of the RGB and W displayed by the LED display screen at different gray levels, and obtaining RGB correction data and W correction data based on the original luminance data and the target gamma value; and sending the RGB correction data and the W correction data to a control device, so that the control device executes the steps of the display correction method described in the second aspect.

[0018] A display correction device for IR-Drop of an LED display screen provided in the fourth aspect of the embodiments of the present application includes: a correction data acquisition unit, configured to respectively obtain the original luminance data of the RGB and W displayed by the LED display screen at different gray levels, and obtain RGB correction data and W correction data based on the original luminance data and the target gamma value; a data fusion unit, configured to obtain image data to be displayed on the LED display screen, and calculate the proportion of pixel RGB data in the image data, and process the RGB correction data and the W correction data based on the proportion of the RGB data to obtain real-time correction data; and a correction unit, configured to correct the image data based on the real-time correction data, and send the corrected image data to the LED display screen for display.

[0019] The fifth aspect of the embodiments of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the display correction method described in the second aspect or the third aspect above are implemented.

[0020] The sixth aspect of the embodiments of the present application provides an LED display system, which is characterized by including a host computer, a control device connected to the host computer, and an LED display screen connected to the control device; wherein, the host computer is used to obtain the original brightness data of RGB and W displayed when the LED display screen is at different gray levels, and obtain RGB correction data and W correction data based on the original brightness data and the target gamma value; the control device is used to execute the steps of the display correction method described in the second aspect; the LED display screen is used to display the corrected image data.

[0021] The seventh aspect of the embodiments of the present application provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the steps of the display correction method described in the second aspect or the third aspect above are implemented.

[0022] The eighth aspect of the embodiments of the present application provides a computer program product, which, when running on an electronic device, causes the electronic device to execute the steps of the display correction method described in the second aspect or the third aspect above.

[0023] In the embodiments of the present application, by obtaining the original brightness data of RGB and W displayed when the LED display screen is at different gray levels, obtaining RGB correction data and W correction data based on the original brightness data and the target gamma value, then obtaining the image data to be displayed on the LED display screen, calculating the proportion of pixel RGB data in the image data, processing the RGB correction data and W correction data based on the RGB data proportion to obtain real-time correction data, correcting the image data based on the real-time correction data, and sending the corrected image data to the LED display screen for display, it is possible to correct the image data at the control end of the LED display screen. This solution can largely solve the problem of poor white display effect of Micro-LED and Mini-LED display screens caused by IR-Drop, and can also help reduce the display unevenness problem caused by IR-Drop. In addition, the correction solution provided by the embodiments of the present application is implemented at the control end, is not limited by the number of chip burn-in times, and is more flexible. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic flowchart of the implementation of a display correction method for IR-Drop of an LED display screen provided by an embodiment of the present application;

[0026] Figure 2 It is a schematic structural diagram of an LED display system provided by an embodiment of the present application;

[0027] Figure 3 It is a schematic flowchart of the specific implementation for obtaining RGB correction data and W correction data provided by an embodiment of the present application;

[0028] Figure 4 It is a schematic structural diagram of a receiving card provided by an embodiment of the present application;

[0029] Figure 5 It is a schematic flowchart of the implementation of a display correction method applied to a control device provided by an embodiment of the present application;

[0030] Figure 6 It is a schematic flowchart of the implementation of a display correction method applied to a host computer provided by an embodiment of the present application;

[0031] Figure 7 It is a schematic structural diagram of a display correction device for IR-Drop of an LED display screen provided by an embodiment of the present application;

[0032] Figure 8 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Specific Embodiments

[0033] In order to make the purpose, technical solutions and advantages of the present application clearer, the following further details the present application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

[0034] In the field of Micro-LED and Mini-LED displays, display technologies using the current drive method inevitably have a voltage drop characteristic, namely IR-Drop. The voltage drop distribution shows that the farther away from the power feeding end, the greater the voltage drop, and the higher the current, the greater the voltage drop. This means that the RGB diodes closer to the power feeding end have a higher driving voltage, while the RGB diodes farther away from the power feeding end have a relatively lower driving voltage. That is to say, even if the same driving signal is provided, the RGB diodes closer to and farther away from the power feeding end will have different brightnesses due to the voltage drop, which will cause uneven brightness on the entire screen. In addition, white in Micro-LED and Mini-LED display screens is usually formed by mixing red, green, and blue lights emitted by RGB diodes respectively. There are differences in the operating voltages and IV (current-voltage) characteristics of RGB diodes. For example, the operating voltage of the R diode is slightly lower, and the operating voltages of the G and B diodes are relatively higher. Therefore, even if high-quality white can be mixed by RGB diodes under the standard voltage, due to the existence of the IR-Drop phenomenon, at least the RGB diodes will not be able to work under the standard voltage as expected, resulting in the inability of these RGB diodes to mix high-quality white.

[0035] To solve this technical problem, related technologies will try to pre-obtain compensation data and then burn the compensation data into the driving chip to achieve compensation for display data at the driving end. Although this method can solve or alleviate the above technical problems to a certain extent, this method of burning compensation data at the driving chip end has a limit on the number of times, is less flexible to implement, and it is also difficult to meet the requirements for the effect of display correction.

[0036] In view of this, the present application proposes a display correction method for IR-Drop of LED display screens, which can achieve compensation for display data at the control end, and the data used for compensation can be adjusted specifically according to the display content, thereby improving the effect of display correction.

[0037] To illustrate the technical solution of the present application, the following will be described through specific embodiments.

[0038] Figure 1 The figure shows a schematic flow chart of the implementation of a display correction method for IR-Drop of LED display screens provided by an embodiment of the present application. This method can be applied to an LED display system and is applicable to situations where it is necessary to improve the poor display effect caused by the IR-Drop problem.

[0039] Please refer to Figure 2 , in the implementation manner of the present application, the LED display system may include a host computer, a control device connected to the host computer, and an LED display screen connected to the control device.

[0040] Among them, the host computer can refer to a computer, a mobile phone, or other intelligent devices capable of configuring control devices. The control device can be a control device for controlling the display screen. Specifically, the control device can refer to a receiving card or other devices with the same or similar functions. The LED display screen can refer to a Mini-LED display screen, a Micro-LED display screen, or other types of LED display screens. This application does not make any restrictions on this.

[0041] Specifically, the above-mentioned display correction method for LED display screen IR-Drop may include the following steps S101 to step S103.

[0042] Step S101, respectively obtain the original brightness data of RGB and W displayed when the LED display screen is at different gray levels, and based on the original brightness data and the target gamma value, obtain RGB correction data and W correction data.

[0043] Among them, the original brightness data of RGB and W displayed when the LED display screen is at different gray levels refers to the brightness data obtained when the LED display screen displays red, green, blue, and white at different gray levels before the display correction of the LED display screen is completed. The original brightness data can characterize the display brightness when the LED display screen displays red, green, blue, and white gray level by gray level before the display correction.

[0044] The gamma value can reflect the display effect of the LED display screen. The target gamma value is related to the display brightness expected to be achieved after correction and can be set according to actual needs. For example, it can be Gamma2.2.

[0045] In the implementation manner of this application, based on the original brightness data and the target gamma value, RGB correction data and W correction data can be obtained. Specifically, the RGB correction data is data for single-color correction (RGB correction) and can be obtained based on the original brightness data of RGB displayed when the LED display screen is at different gray levels. Since the RGB correction data mainly refers to the original brightness data of single colors (i.e., R, G, B), it has a good correction effect on LED display screens with a current display color that is reddish, bluish, or greenish. The W correction data is data for color mixing correction (RGBW correction) and can be obtained based on the original brightness data of RGB and W displayed when the LED display screen is at different gray levels. Since the W correction data refers to the original brightness data of W, it has a good correction effect on LED display screens where R, G, and B are relatively close in the current display color. Exemplarily, the original brightness data can be obtained by measuring with a colorimeter, or by image analysis technology, or even by reusing the existing brightness data of the display screen obtained by other means. This application embodiment does not make specific limitations on this.

[0046] Step S102: Obtain the image data to be displayed on the LED display screen, calculate the proportion of pixel RGB data in the image data, and process the RGB correction data and W correction data based on the RGB data proportion to obtain real-time correction data.

[0047] Among them, the image data to be displayed on the LED display screen refers to the image data that needs to be displayed on the LED display screen. This image data can be parsed from the video stream transmitted by the video source or read from the memory of the control device. This application does not limit this.

[0048] In an embodiment of the present application, after obtaining the image data, the proportion of pixel RGB data in the image data can be calculated. The RGB data proportion represents the ratio of the R value, G value, and B value of each pixel point in the image data, and further reflects the color situation that the LED display screen currently needs to display.

[0049] The real-time correction data is the data used to perform display correction on the LED display screen, and can specifically refer to gamma calibration parameters. Based on the RGB data proportion, the RGB correction data and W correction data can be processed to obtain real-time correction data, so that the real-time correction data can adapt to the color situation that the LED display screen currently needs to display. Exemplarily, according to the RGB data proportion of each image pixel, the corresponding physical pixel light points can be found, and then the RGB correction data and W correction data of these light points can be processed respectively.

[0050] Step S103: Based on the real-time correction data, correct the image data, and send the corrected image data to the LED display screen for display.

[0051] After obtaining the real-time correction data, the image data can be corrected based on the real-time correction data to obtain the corrected image data. The corrected image data is the image data that has completed display correction. Sending the corrected image data to the LED display screen for display can improve the display effect of the LED display screen.

[0052] In an embodiment of the present application, by obtaining the original brightness data of RGB and W displayed at different gray levels of the LED display screen, based on the original brightness data and the target gamma value, RGB correction data and W correction data are obtained. Then, the image data to be displayed on the LED display screen is obtained, and the proportion of pixel RGB data in the image data is calculated. Based on the proportion of RGB data, the RGB correction data and W correction data are processed to obtain real-time correction data, and based on the real-time correction data, the image data is corrected, and the corrected image data is sent to the LED display screen for display, so that the correction of the image data can be performed at the control end of the LED display screen. This solution can largely solve the problem of poor white display effect of Micro-LED and Mini-LED display screens caused by IR-Drop, and can also help to reduce the display unevenness problem caused by IR-Drop. In addition, the correction solution provided by the embodiments of the present application is implemented at the control end, is not limited by the number of chip burn-ins, and is more flexible.

[0053] In some embodiments of the present application, in step S101, the LED display screen can be first calibrated for each gray level to ensure that the LED display screen displays normally at different gray levels. Specifically, the LED display screen can be controlled to be lit at each display gray level, and the brightness of each light point of the LED display screen can be detected. If the brightness of each light point is normal, it can be confirmed that the LED display screen displays normally for each gray level. The LED display screen that displays normally for each gray level can ensure the reliability of the obtained original brightness data, and avoid affecting the accuracy of the correction data and the display correction effect due to abnormal display of the light points.

[0054] After completing the calibration for each gray level, the LED display screen can be controlled to be lit at different gray levels. For example, the LED display screen can be controlled to be lit for each gray level to obtain the original brightness data of RGB and W displayed at different gray levels. Then, based on the original brightness data, RGB correction data and W correction data are obtained.

[0055] Specifically, as Figure 3 shown, the obtaining of the RGB correction data and the W correction data based on the original brightness data may include steps S301 to S304.

[0056] Step S301, obtain the screen bit depth of the LED display screen.

[0057] The screen bit depth (Bit Depth) characterizes the color expression ability of the display screen. Assuming that the screen bit depth is n, the RGB of the LED display screen can respectively display 2^n - 1 brightness levels. The screen bit depth can be obtained according to the model of the LED display screen or user configuration, and the present application does not limit this.

[0058] Step S302: Determine the brightness target data according to the screen position depth and the target gamma value.

[0059] Among them, according to the screen position depth and the preset target gamma value, the brightness target data can be determined, and this brightness target data represents the target value that the LED display screen needs to reach after display correction in terms of brightness.

[0060] Step S303: Determine the RGB correction data according to the original brightness data of RGB displayed by the LED display screen at different gray levels and the brightness target data.

[0061] According to the original brightness data of RGB displayed by the LED display screen at different gray levels and the brightness target data, the RGB correction data can be determined, so that the RGB correction data can correct the original brightness data of R, G, and B to the brightness target data. Furthermore, after using the RGB correction data to perform display correction on the LED display screen, when the LED display screen displays the corrected image data, the brightness can approach the brightness target data.

[0062] Step S304: Determine the W correction data according to the original brightness data of RGB and W displayed by the LED display screen at different gray levels and the brightness target data.

[0063] Similarly, according to the original brightness data of R, G, B, and W displayed by the LED display screen at different gray levels and the brightness target data, the W correction data can be determined, so that the W correction data can correct the original brightness data of R, G, B, and W to the brightness target data. Furthermore, after using the RGB correction data to perform display correction on the LED display screen, when the LED display screen displays the corrected image data, the brightness can approach the brightness target data. Compared with step S303, step S304 adds the original brightness data of W displayed by the LED display screen at different gray levels. Therefore, the obtained W correction data is more suitable for the situation where the colors that the LED display screen needs to display tend to be white or gray.

[0064] In the embodiments of the present application, the above-mentioned per-gray-level verification, and the determination of the RGB correction data and the W correction data can be implemented by a host computer and professional acquisition devices (such as a luminance meter, an industrial camera, etc.). After the host computer obtains the RGB correction data and the W correction data, it can be written to the specified position (such as a receiving card) of the control device in a manner supported by the LED display system, such as through a serial port, an Inter-Integrated Circuit (I2C) interface, etc.

[0065] By way of example and not limitation, the control device may refer to a receiving card. Figure 4The internal block diagram of the receiving card is shown. The host computer can send RGB correction data and W correction data to the protocol parsing module of the receiving card. After being parsed by the protocol parsing module, they are written into the memory of the receiving card.

[0066] It should be noted that the host computer itself can be used to configure the controlled device. Therefore, it usually has the write permission for the controlled device. Different from the driving chip, the write times of the controlled device, that is, storing the correction data, are generally not restricted.

[0067] In some embodiments of the present application, in step S102, the controlled device can receive the image data and perform protocol parsing and image parsing processing. In some possible embodiments, the step of image parsing or segmentation can also be completed on the sending card or other professional video processing devices, and then the processed image data supported by the receiving card is sent to the receiving card. Or, the module with the relevant processing function can also be integrated on the receiving card.

[0068] Take Figure 4 as an example for illustration. The protocol parsing module can be a Field Programmable Gate Array (FPGA) processor. The protocol parsing module can complete the parsing of the instructions and image data sent by the host computer and the sending card, give the parsed commands to the command processing module, and give the parsed image data to the image processing and parsing module. The command processing module can be an FPGA processor or a microprocessor, and can complete the execution and feedback of the commands sent by the host computer. The commands sent by the host computer include but are not limited to: commands for adjusting brightness, setting curing parameters, and changing the display effect. The image parsing and processing module can be an FPGA processor, which can receive the image data, store it, and perform image processing. The image processing can include but is not limited to performing forward and inverse Gamma transforms on the image data, and conventional display corrections (such as thermal correction, grayscale correction).

[0069] The image data after completing the image processing can be stored in the memory, waiting for monochromatic correction or mixed-color correction.

[0070] In some embodiments of the present application, in step S102, the processing of the RGB correction data and the W correction data based on the RGB data ratio may include: blending the RGB correction data and the W correction data based on the RGB data ratio.

[0071] Among them, blending means mixing (Blending), which can mix the two types of data, namely the RGB correction data and the W correction data, into one piece of data, so that this piece of data refers to the data content of both the RGB correction data and the W correction data at the same time.

[0072] Specifically, the step of fusing RGB correction data and W correction data based on the RGB data ratio to obtain real-time correction data may include: determining the color saturation based on the RGB data ratio, and fusing the RGB correction data and the W correction data according to the color saturation to obtain the real-time correction data.

[0073] Among them, the color saturation may be positively correlated with the proximity of the ratios among R, G, and B. That is to say, the closer the ratios among R, G, and B are, the higher the color saturation.

[0074] In some embodiments of the present application, the step of fusing the RGB correction data and the W correction data according to the color saturation to obtain the real-time correction data may include: determining the fusion weight according to the color saturation, and fusing the RGB correction data and the W correction data according to the fusion weight to obtain the real-time correction data.

[0075] Among them, the fusion weight may include a first weight of the RGB correction data and / or a second weight of the W correction data. The first weight is negatively correlated with the color saturation, and the second weight is positively correlated with the color saturation. In other words, the closer the ratios among R, G, and B are, the higher the color saturation. At this time, the second weight of the W correction data is higher, and the first weight of the RGB correction data is lower. When fusing, the real-time correction data is closer to the W correction data. On the contrary, the more different the ratios among R, G, and B are, the lower the color saturation. At this time, the second weight of the W correction data is lower, and the first weight of the RGB correction data is higher. When fusing, the real-time correction data is closer to the RGB correction data.

[0076] It should be understood that the closer the ratios among R, G, and B are, the closer the real-time correction data is to the W correction data. The W correction data refers to the original brightness data when the LED display screen displays W, and has a better correction effect for the case where the ratios among R, G, and B are relatively close. The more different the ratios among R, G, and B are, the closer the color that the LED display screen needs to display is to a single color (red, green, or blue). Correspondingly, the real-time correction data is closer to the RGB correction data. The RGB correction data mainly refers to the original brightness data when the LED display screen displays R, G, and B, and has a better correction effect for the case where the color is close to a single color.

[0077] In some other embodiments of the present application, the control device may also pre-store multiple preset correction types, and the multiple preset correction types may include RGBW correction, RGB correction, and W correction.

[0078] According to the RGB data ratio, the control device may determine the current correction type of the LED display screen among the multiple preset correction types.

[0079] If the current calibration type is RGBW calibration, the RGB calibration data and the W calibration data can be processed to obtain real-time calibration data. Furthermore, the image data can be corrected according to the real-time calibration data, and the corrected image data can be sent to the LED display for display. Among them, the processing of the RGB calibration data and the W calibration data can refer to the method of fusing the RGB calibration data and the W calibration data in the previous text, which will not be elaborated in this application.

[0080] If the current calibration type is RGB calibration, the image data can be corrected according to the RGB calibration data, and the corrected image data can be sent to the LED display for display.

[0081] If the current calibration type is W calibration, the image data can be corrected according to the W calibration data, and the corrected image data can be sent to the LED display for display.

[0082] Specifically, in some embodiments, based on the RGB data ratio, if the proximity degree among R, G, and B is greater than the first degree threshold, it can be confirmed that the current calibration type is W calibration. At this time, the control device can correct the image data according to the W calibration data. If the proximity degree among R, G, and B is lower than the second degree threshold, it can be confirmed that the current calibration type is RGB calibration. At this time, the control device can correct the image data according to the RGB calibration data. When the proximity degree among R, G, and B is between the first degree threshold and the second degree threshold, it can be confirmed that the current calibration type is RGBW calibration. At this time, the control device can process the RGB calibration data and the W calibration data to correct the image data according to the real-time calibration data. Among them, the first degree threshold is greater than the second degree threshold.

[0083] In some other embodiments, the aforementioned color saturation can also be determined according to the RGB data ratio. When the color saturation is higher than the first saturation threshold, it can be confirmed that the current calibration type is W calibration. When the color saturation is lower than the second saturation threshold, it can be confirmed that the current calibration type is RGB calibration. When the color saturation is between the first saturation threshold and the second saturation threshold, it can be confirmed that the current calibration type is RGBW calibration. Among them, the first saturation threshold is greater than the second saturation threshold.

[0084] For different calibration types, the control device can perform display calibration according to the RGB calibration data, the W calibration data, or the real-time calibration data obtained by processing the RGB calibration data and the W calibration data respectively to adapt to different display requirements of the LED display.

[0085] In practical applications, an LED display screen may include multiple display modules, and the image data may include sub-image data of each display module. Correspondingly, in some embodiments, based on real-time correction data, correcting the image data and sending the corrected image data to the LED display screen for display may include: based on the real-time correction data, correcting the sub-image data of each display module in the image data to obtain the corrected sub-image data, and separately sending each corrected sub-image data to the corresponding display module for display.

[0086] That is to say, the correction and transmission of image data can be performed in units of display modules.

[0087] Specifically, in some embodiments, the above real-time correction data may include sub-correction data of each display module. The step of, based on the real-time correction data, correcting the sub-image data of each display module in the image data to obtain the corrected sub-image data may include: according to the screen matching information of the LED display screen, splitting the image data into sub-image data of each display module, and respectively correcting the corresponding sub-image data according to the sub-correction data of each display module to obtain the corrected sub-image data.

[0088] Among them, the screen matching information is used to indicate the position and resolution size of each display module in the LED display screen. According to the screen matching information of the LED display screen, the part of the image data that needs to be displayed by each display module can be determined, and through image segmentation, the image data can be split into sub-image data required for display by each display module. Correspondingly, during display correction, the corresponding sub-image data can be respectively corrected according to the sub-correction data of each display module to obtain the corrected sub-image data.

[0089] Exemplarily, please refer to Figure 4, the image segmentation module can be an FPGA processor. This module can acquire image data, segment it according to the display module, and output sub-image data in units of the display module. The Gamma calibration module can include a proportion calculation sub-module and a Gamma calibration sub-module. The proportion calculation sub-module can perform real-time calculation of the pixel RGB proportion data of the sub-image data output by the image segmentation module and output the result to the Gamma calibration sub-module in real time. The Gamma calibration sub-module can use the corresponding real-time correction data to correct the Gamma calibration according to the result of the proportion calculation sub-module to obtain the corrected sub-image data, ensuring that the gray-scale brightness displayed on the final LED display module conforms to the standard Gamma curve. Gamma calibration is also performed in units of the display module, which can avoid the problem of excessive brightness difference between display modules affecting the calibration effect. Then, the timing control output can output the corrected sub-image data after Gamma calibration to the display module according to the interface timing of the display module.

[0090] In some other embodiments, the correcting the sub-image data of each display module in the image data based on the real-time correction data to obtain the corrected sub-image data may include: correcting the corresponding sub-image data in the image data respectively according to the sub-correction data of each display module to obtain the corrected image data; and segmenting the corrected image data into the corrected sub-image data according to the screen matching information of the LED display screen.

[0091] This method, compared with Figure 4 the method of first performing image segmentation and then correction as shown, first completes the correction and then performs image segmentation.

[0092] It can be understood that performing display calibration and transmission in units of the display module can avoid the display differences between different display modules from affecting the calibration effect, help to make the display effects of each display module tend to be consistent, and further improve the overall display effect of the LED display screen.

[0093] In the embodiments of the present application, when adopting the method of first completing correction and then performing image segmentation, it is necessary to distinguish which display module each piece of data in the image data belongs to. When adopting the method of first performing image segmentation and then performing correction, during the correction, the sub-image data corresponds to the sub-calibration data one by one. The control device does not need to distinguish which display module each piece of data in the image data belongs to, and can directly apply the corresponding sub-calibration data to the entire sub-image data. Therefore, the processing speed of the correction process is faster. Of course, when adopting the method of first performing image segmentation and then performing correction, there are relatively high requirements for the speed of transmitting the corrected image data subsequently. Therefore, in practical applications, a selection can be made between the two methods according to the processing capabilities of the chip for correcting image data and the chip for transmitting image data, and the present application does not limit this.

[0094] It should be noted that the RGB calibration data can include the RGB calibration data corresponding to each of multiple display gray levels, and the W calibration data can also include the W calibration data corresponding to each of multiple display gray levels. During the process of processing the RGB calibration data and the W calibration data based on the RGB data ratio to obtain real-time calibration data, the current display gray level can be first determined among multiple display gray levels, and then based on the RGB data ratio, the RGB calibration data corresponding to the current display gray level and the W calibration data corresponding to the current display gray level are processed to obtain real-time calibration data. In this way, the obtained real-time calibration data can be adapted to the current display gray level.

[0095] Similarly, the method of processing the RGB calibration data corresponding to the current display gray level and the W calibration data corresponding to the current display gray level can refer to the method of fusing the RGB calibration data and the W calibration data described above, and the present application will not elaborate on this.

[0096] Performing physical tests on the method adopted in the present application, it is found that when the display calibration method of the present application is not enabled, the LED display screen displays the original brightness data of R, G, B, and W for each gray level, and there is a phenomenon that R + G + B ≠ W in the brightness data under the same gray level due to IR-Drop, and the result of the R + G + B brightness data under the same gray level is quite different from W. After enabling the display calibration method of the present application, a colorimeter is used to collect the brightness data of R, G, B, and W displayed for each gray level. The result of the equal amount of R + G + B brightness data under the same gray level is close to W, which indicates that the white display effect is also better after implementing the solution of the embodiment of the present application.

[0097] At the same time, after enabling the display calibration method of the present application, a fitting analysis tool is used to verify and analyze the linearity of the LED display screen. Compared with not enabling the display calibration method of the present application, the linearity fitting result is significantly improved, and the display effect is improved.

[0098] Correspondingly, please refer to Figure 5 ,Figure 5 The figure shows a schematic diagram of the implementation process of a display correction method for IR-Drop of an LED display provided by an embodiment of the present application, and this method can be applied to a control device.

[0099] Specifically, Figure 5 The shown display correction method may include steps S501 to S503.

[0100] Step S501: Obtain RGB correction data and W correction data.

[0101] Among them, the RGB correction data and the W correction data are obtained based on the original brightness data of RGB and W displayed by the LED display at different gray levels and the target gamma value.

[0102] Step S502: Obtain the image data to be displayed on the LED display, calculate the proportion of pixel RGB data in the image data, and process the RGB correction data and the W correction data based on the proportion of RGB data to obtain real-time correction data.

[0103] Step S503: Correct the image data based on the real-time correction data, and send the corrected image data to the LED display for display.

[0104] Among them, Figure 5 The shown process can refer to Figures 1 to 4 the description, and the present application will not elaborate on this.

[0105] Correspondingly, please refer to Figure 6 , Figure 6 The figure shows a schematic diagram of the implementation process of a display correction method for IR-Drop of an LED display provided by an embodiment of the present application, and this method can be applied to a host computer.

[0106] Specifically, Figure 6 The shown display correction method may include steps S601 to S602.

[0107] Step S601: Respectively obtain the original brightness data of RGB and W displayed by the LED display at different gray levels, and obtain RGB correction data and W correction data based on the original brightness data and the target gamma value.

[0108] Step S602: Send the RGB correction data and the W correction data to the control device.

[0109] Furthermore, the control device can execute the steps of the display correction method as Figure 5 shown.

[0110] Similarly, Figure 6 The shown process can refer to Figures 1 to 4For the description of this, this application will not elaborate.

[0111] It can be understood that in the Figure 2 LED display system shown, the host computer can be used to execute the steps of the display correction method as shown in Figure 6 to obtain the original brightness data of RGB and W displayed when the LED display screen is at different gray levels. Based on the original brightness data and the target gamma value, RGB correction data and W correction data are obtained. The control device can be used to execute the steps of the display correction method as shown in Figure 5 to process the RGB correction data and the W correction data, correct the image data according to the real-time correction data, and send the corrected image data to the LED display screen. Furthermore, the LED display screen can be used to display the corrected image data under the control of the control device.

[0112] In this way, display correction can be achieved at the control end of the LED display screen, and the problem of poor display effect caused by IR-Drop can be improved. Moreover, by fusing the RGB correction data and the W correction data, the real-time correction data can be made more in line with the display situation of the LED display screen, achieving a better display effect.

[0113] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be carried out in other sequences.

[0114] As Figure 7 shown is a schematic structural diagram of a display correction device 700 for IR-Drop of an LED display screen provided by an embodiment of this application. The display correction device 700 for IR-Drop of the LED display screen is configured on the LED display system.

[0115] Among them, the display correction device 700 for IR-Drop of the LED display screen may include:

[0116] A correction data acquisition unit 701, configured to respectively acquire the original brightness data of RGB and W displayed when the LED display screen is at different gray levels, and based on the original brightness data and the target gamma value, obtain RGB correction data and W correction data;

[0117] A data fusion unit 702, configured to acquire the image data to be displayed on the LED display screen, calculate the proportion of pixel RGB data in the image data, and based on the RGB data proportion, process the RGB correction data and the W correction data to obtain real-time correction data;

[0118] A correction unit 703, configured to correct the image data based on the real-time correction data, and send the corrected image data to the LED display screen for display.

[0119] In some embodiments of the present application, the data fusion unit 702 may be specifically configured to: fuse the RGB correction data and the W correction data based on the RGB data ratio.

[0120] In some embodiments of the present application, the LED display screen includes a plurality of display modules, and the image data includes sub-image data of each display module; the correction unit 703 may be specifically configured to: correct the sub-image data of each display module in the image data based on the real-time correction data to obtain the corrected sub-image data; send each of the corrected sub-image data to the corresponding display module for display.

[0121] In some embodiments of the present application, the real-time correction data includes sub-correction data of each display module; the correction unit 703 may be specifically configured to: divide the image data into sub-image data of each display module according to the screen matching information of the LED display screen; correct the corresponding sub-image data respectively according to the sub-correction data of each display module to obtain the corrected sub-image data.

[0122] In some embodiments of the present application, the real-time correction data includes sub-correction data of each display module; the correction unit 703 may be specifically configured to: correct the corresponding sub-image data in the image data respectively according to the sub-correction data of each display module to obtain the corrected image data; divide the corrected image data into the corrected sub-image data according to the screen matching information of the LED display screen.

[0123] In some embodiments of the present application, the data fusion unit 702 may be specifically configured to: determine a color saturation based on the RGB data ratio, where the color saturation is positively correlated with the degree of proximity of the ratios among R, G, and B; fuse the RGB correction data and the W correction data according to the color saturation to obtain the real-time correction data.

[0124] In some embodiments of the present application, the data fusion unit 702 may be specifically configured to: determine a fusion weight according to the color saturation, where the fusion weight includes a first weight of the RGB correction data and / or a second weight of the W correction data, the first weight is negatively correlated with the color saturation, and the second weight is positively correlated with the color saturation; fuse the RGB correction data and the W correction data according to the fusion weight to obtain the real-time correction data.

[0125] In some embodiments of the present application, the data fusion unit 702 may be specifically configured to: determine the current correction type of the LED display screen from multiple preset correction types according to the RGB data ratio, where at least RGBW correction is included in the multiple preset correction types; if the current correction type is the RGBW correction, process the RGB correction data and the W correction data to obtain the real-time correction data.

[0126] In some embodiments of the present application, the data fusion unit 702 may be specifically configured to: if the current correction type is the RGB correction, correct the image data according to the RGB correction data and send the corrected image data to the LED display screen for display; and / or, if the current correction type is the W correction, correct the image data according to the W correction data and send the corrected image data to the LED display screen for display.

[0127] In some embodiments of the present application, the RGB correction data includes the RGB correction data corresponding to each of multiple display gray levels, and the W correction data includes the W correction data corresponding to each of multiple display gray levels; the data fusion unit 702 may be specifically configured to: determine the current display gray level among the multiple display gray levels; process the RGB correction data corresponding to the current display gray level and the W correction data corresponding to the current display gray level based on the RGB data ratio to obtain the real-time correction data.

[0128] In some embodiments of the present application, the correction data acquisition unit 701 may be specifically configured to: acquire the screen bit depth of the LED display screen; determine the brightness target data according to the screen bit depth and the target gamma value; determine the RGB correction data according to the original brightness data of RGB displayed by the LED display screen at different gray levels and the brightness target data; determine the W correction data according to the original brightness data of RGB and W displayed by the LED display screen at different gray levels and the brightness target data.

[0129] It should be noted that for the convenience and conciseness of description, the specific working process of the above-described display correction device 700 for LED display IR-Drop can be referred to Figures 1 to 6 the corresponding process of the method described above, which will not be elaborated here.

[0130] As Figure 8 shown, it is a schematic diagram of an electronic device provided by an embodiment of the present application. The electronic device 8 may specifically refer to the aforementioned host computer or control device.

[0131] Specifically, the electronic device 8 may include: a processor 80, a memory 81, and a computer program 82 stored in the memory 81 and executable on the processor 80, such as a display correction program for LED display IR-Drop. When the processor 80 executes the computer program 82, the steps in the above-described various embodiments of the display correction method for LED display IR-Drop are implemented, such as Figure 1 any one or more of the steps S101 to S103 shown. Alternatively, when the processor 80 executes the computer program 82, the functions of each module / unit in the above-described various device embodiments are implemented, such as Figure 7 the functions of any one or more of the correction data acquisition unit 701, data fusion unit 702, and correction unit 703 shown.

[0132] The computer program may be divided into one or more modules / units, and the one or more modules / units are stored in the memory 81 and executed by the processor 80 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the electronic device.

[0133] The electronic device may include, but is not limited to, a processor 80 and a memory 81. Those skilled in the art can understand that Figure 8 this is merely an example of an electronic device and does not constitute a limitation on the electronic device. It may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, the electronic device may further include input / output devices, network access devices, a bus, etc.

[0134] The so-called processor 80 may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), off-the-shelf programmable gate arrays, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, or the processor may also be any conventional processor, etc.

[0135] The memory 81 may be an internal storage unit of the electronic device, such as the hard disk or memory of the electronic device. The memory 81 may also be an external storage device of the electronic device, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, Flash Card, etc. equipped on the electronic device. Further, the memory 81 may also include both the internal storage unit and the external storage device of the electronic device. The memory 81 is used to store the computer program and other programs and data required by the electronic device. The memory 81 may also be used to temporarily store the data that has been output or is to be output.

[0136] It should be noted that for the convenience and brevity of description, the structure of the above-mentioned electronic device may also refer to the specific description of the structure in the method embodiment, which will not be elaborated here.

[0137] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules as needed, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiment, which will not be elaborated here.

[0138] In the above embodiments, the descriptions of the various embodiments each have their own emphasis. For parts not described or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0139] Those of ordinary skill in the art will realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0140] In the embodiments provided in this application, it should be understood that the disclosed apparatus / electronic device and method can be implemented in other ways. For example, the apparatus / electronic device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical or other forms.

[0141] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0142] In addition, the functional units in the various embodiments of this application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0143] When the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above-described embodiment methods of this application, it can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-described various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice within the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0144] The above-described embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this application, and should all be included in the protection scope of this application.

Claims

1. A display correction method for IR-Drop of an LED display, characterized in that, Including: Obtain the original luminance data of RGB and W displayed when the LED display screen is at different gray levels respectively, and obtain RGB correction data and W correction data based on the original luminance data and a target gamma value; Obtain image data to be displayed on the LED display screen, calculate the proportion of pixel RGB data in the image data, and process the RGB correction data and the W correction data based on the proportion of RGB data to obtain real-time correction data; Based on the real-time correction data, correct the image data and send the corrected image data to the LED display screen for display.

2. The display correction method according to claim 1, characterized in that, "Processing the RGB correction data and the W correction data based on the proportion of RGB data" includes: Fusing the RGB correction data and the W correction data based on the proportion of RGB data.

3. The display correction method according to claim 1, characterized in that, The LED display screen includes a plurality of display modules, and the image data includes sub-image data of each display module; Among them, "correcting the image data based on the real-time correction data and sending the corrected image data to the LED display screen for display" includes: Based on the real-time correction data, correct the sub-image data of each display module in the image data to obtain corrected sub-image data; Send each of the corrected sub-image data to the corresponding display module for display.

4. The display correction method according to claim 3, characterized in that, The real-time correction data includes sub-correction data of each display module; Among them, "correcting the sub-image data of each display module in the image data based on the real-time correction data to obtain corrected sub-image data" includes: According to the screen matching information of the LED display screen, divide the image data into sub-image data of each display module; According to the sub-correction data of each display module, correct the corresponding sub-image data respectively to obtain the corrected sub-image data.

5. The display correction method according to claim 3, characterized in that, The real-time correction data includes sub-correction data of each display module; Among them, "correcting the sub-image data of each display module in the image data based on the real-time correction data to obtain corrected sub-image data" includes: According to the sub-correction data of each display module, correct the corresponding sub-image data in the image data respectively to obtain the corrected image data; According to the screen matching information of the LED display screen, divide the corrected image data into the corrected sub-image data.

6. The display correction method according to claim 2, characterized in that, "Fusing the RGB correction data and the W correction data based on the proportion of RGB data to obtain real-time correction data" includes: Based on the proportion of RGB data, determine the color saturation, and the color saturation is positively correlated with the degree of proximity of the proportions among R, G, and B; According to the color saturation, fuse the RGB correction data and the W correction data to obtain the real-time correction data.

7. The display correction method according to claim 6, characterized in that, "According to the color saturation, fuse the RGB correction data and the W correction data to obtain the real-time correction data" includes: Determine a blending weight according to the color saturation, where the blending weight includes a first weight of the RGB correction data and / or a second weight of the W correction data, the first weight is negatively correlated with the color saturation, and the second weight is positively correlated with the color saturation; Blend the RGB correction data and the W correction data according to the blending weight to obtain the real-time correction data.

8. The display correction method according to claim 1, characterized in that, "Process the RGB correction data and the W correction data based on the RGB data ratio to obtain real-time correction data" includes: Determine the current correction type of the LED display screen among multiple preset correction types according to the RGB data ratio, and at least RGBW correction is included in the multiple preset correction types; If the current correction type is RGBW correction, process the RGB correction data and the W correction data to obtain the real-time correction data.

9. The display correction method according to claim 8, characterized in that, RGB correction and W correction are also included in the multiple preset correction types, and the display correction method further includes: If the current correction type is RGB correction, correct the image data according to the RGB correction data, and send the corrected image data to the LED display screen for display; and / or, If the current correction type is W correction, correct the image data according to the W correction data, and send the corrected image data to the LED display screen for display.

10. The display correction method according to claim 1, wherein The RGB correction data includes RGB correction data corresponding to each of multiple display gray levels, and the W correction data includes W correction data corresponding to each of multiple display gray levels; Wherein, "process the RGB correction data and the W correction data based on the RGB data ratio to obtain real-time correction data" includes: Determine the current display gray level among the multiple display gray levels; Process the RGB correction data corresponding to the current display gray level and the W correction data corresponding to the current display gray level based on the RGB data ratio to obtain the real-time correction data.

11. The display correction method according to claim 1, wherein "Obtain RGB correction data and W correction data based on the original brightness data and the target gamma value" includes: Obtain the screen bit depth of the LED display screen; Determine the brightness target data according to the screen bit depth and the target gamma value; Determine the RGB correction data according to the original brightness data of the LED display screen when displaying RGB at different gray levels and the brightness target data; Determine the W correction data according to the original brightness data of the LED display screen when displaying RGB and W at different gray levels and the brightness target data.

12. A display correction method for IR-Drop of an LED display screen, wherein Applied to a control device, the display correction method includes: Obtain RGB correction data and W correction data, where the RGB correction data and the W correction data are obtained based on the original brightness data of the LED display screen when displaying RGB and W at different gray levels and the target gamma value; Obtain the image data to be displayed on the LED display screen, calculate the proportion of pixel RGB data in the image data, and process the RGB correction data and the W correction data based on the RGB data proportion to obtain real-time correction data; Based on the real-time correction data, correct the image data and send the corrected image data to the LED display screen for display.

13. A display correction device for IR-Drop of an LED display screen, wherein Comprising: A correction data acquisition unit, configured to respectively obtain the original brightness data of RGB and W displayed by the LED display screen at different gray levels, and obtain RGB correction data and W correction data based on the original brightness data and a target gamma value; A data fusion unit, configured to obtain the image data to be displayed on the LED display screen, calculate the proportion of pixel RGB data in the image data, and process the RGB correction data and the W correction data based on the RGB data proportion to obtain real-time correction data; A correction unit, configured to correct the image data based on the real-time correction data and send the corrected image data to the LED display screen for display.

14. 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 computer program, the steps of the display correction method according to claim 12 are implemented.

15. An LED display system, wherein Comprising a host computer, a control device connected to the host computer, and an LED display screen connected to the control device; Wherein, the host computer is configured to obtain the original brightness data of RGB and W displayed by the LED display screen at different gray levels, and obtain RGB correction data and W correction data based on the original brightness data and a target gamma value; The control device is configured to execute the steps of the display correction method according to claim 12; The LED display screen is configured to display the corrected image data.

16. A computer-readable storage medium storing a computer program, wherein When the computer program is executed by a processor, the steps of the display correction method according to claim 12 are implemented.

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