Image generation system and method for LED display system

Abstract

The present invention discloses an image generation system and method for an LED display system, relating to the field of LED technology. The method adopts an image generation system to work, wherein the image generation system includes a multi-touch module, an LED display module, and a damaged image reconstruction module. The multi-touch module is used to realize the multi-touch function and record the touch points. The LED display module uses LED lamp beads to display images and calculates the temperature rise effect of the LED lamp beads themselves. The damaged image reconstruction module is used to compare the predicted value of a video frame with the actual received value to determine whether there is an error, and to reconstruct the damaged area using an interpolation algorithm. The multi-touch module includes a touch sensing unit, a touch statistics module, a heat accumulation estimation module, and a coordinate system establishment module. The touch sensing unit is electrically connected to the touch statistics module. The present invention has the characteristic of accurate reconstruction effect.

Description

Technical Field

[0001] The present invention relates to the field of LED technology, and in particular to an image generation system and method for an LED display system. Background Art

[0002] When LED displays play video, error concealment and recovery algorithms exploit the redundancy and complementarity of multimodal data to detect errors in the image display unit. For example, by comparing the predicted value of a video frame with the actual received value, combined with the continuity of the audio signal, errors can be determined. Once an error is detected, the error concealment mechanism is activated. Based on the correlation between adjacent pixels, an interpolation algorithm is used to reconstruct the damaged area, and a weighted average method is used to estimate the damaged pixel values.

[0003] In highly integrated LED touch screens, the multi-touch module generates a certain amount of heat when in operation due to the flow of current and the operation of electronic components. If touches are frequent, the continuous accumulation of heat may cause the temperature of the touch module to rise. The heat generated by the touch unit may affect the nearby LED lamp beads through thermal conduction. The temperature increase may cause the RGB values ​​of the lamp beads to change, affecting the color value distribution of pixels in the image. Although the change in color value distribution has little effect on the display of the LED lamp beads themselves, the change in color value during reconstruction will weaken the accuracy of the correlation between adjacent pixels, thereby affecting the final reconstruction effect. Therefore, it is necessary to design an image generation system and method for LED display systems with accurate reconstruction effect. Summary of the Invention

[0004] The object of the present invention is to provide an image generation system and method for an LED display system to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an image generation system for an LED display system, the image generation system including a multi-touch module, an LED display module, and a damaged image reconstruction module, the multi-touch module is used to realize the multi-touch function and record the touch points, the LED display module uses LED lamp beads to display images and calculates the temperature rise effect of the LED lamp beads themselves, the damaged image reconstruction module is used to compare the predicted value of the video frame with the actual received value to determine whether there is an error, and use an interpolation algorithm to reconstruct the damaged area.

[0006] According to the above technical solution, the multi-touch module includes a touch sensing unit, a touch statistics module, a heat accumulation estimation module, and a coordinate system establishment module. The touch sensing unit is electrically connected to the touch statistics module, and the touch statistics module is electrically connected to the heat accumulation estimation module. The touch sensing unit is used to detect a touch signal when the screen is touched. The touch statistics module is used to count the number of touches on each touch sensing unit. The heat accumulation estimation module is used to estimate the amount of heat that causes the temperature of each touch sensing unit to rise. The coordinate system establishment module is used to establish a coordinate system based on the arrangement of the touch sensing units.

[0007] The LED display module includes LED lamp beads, a coordinate recording module, a heat receiving calculation module, an RGB value correction module, a working time recording module, a self-heat calculation module, and a color sensor. The coordinate system establishment module is electrically connected to the coordinate recording module, the coordinate recording module is electrically connected to the heat receiving calculation module, the heat receiving calculation module and the self-heat calculation module are both electrically connected to the RGB value correction module, and the working time recording module is electrically connected to the self-heat calculation module. The LED lamp beads are used to display images, the coordinate recording module is used to record the coordinates of each LED lamp bead, the heat receiving calculation module is used to calculate the heat received by each LED lamp bead, the RGB value correction module is used to correct the error between the theoretical value and the actual value of the RGB value, the working time recording module is used to record the working time of the LED lamp bead, the self-heat calculation module is used to calculate the heat generated by the LED lamp bead due to its own work, and the color sensor is used to detect the RGB value of each LED lamp bead;

[0008] The damaged image reconstruction module includes a frame comparison module, an error detection module, an image reconstruction module, and an RGB value entry module. The RGB value correction module is electrically connected to the RGB value entry module. The frame comparison module is electrically connected to the error detection module and the image reconstruction module in sequence. The frame comparison module is used to compare the predicted value of each frame with the actual received value to determine whether there is an error in the current video frame. The error detection module integrates the results of video frame comparison and audio signal analysis to determine whether there is an error in the RGB value of the current LED lamp bead. The image reconstruction module calculates and estimates the value of the damaged pixel based on the values ​​of the adjacent pixels, and reconstructs the damaged area based on the correlation of the adjacent pixels. The RGB value entry module is used to enter the RGB value of the LED lamp bead corresponding to each pixel.

[0009] An image generation method for an LED display system comprises the following steps:

[0010] S1. When the touch screen display is put into use, a coordinate system is established for the arrangement of the touch sensor unit and LED lamp beads above, and the position coordinates are marked;

[0011] S2. Attach a detection device with a color sensor to the LED display screen to monitor the color of a specific location on the LED display screen in real time, and use a temperature sensor to correct the effect of temperature on the RGB value of the LED lamp beads under a linear regression model;

[0012] S3. Real-time recording of the working time of the LED display screen, statistics of the temperature increase of each LED lamp bead due to continuous operation, and incorporate it into the prerequisite for RGB value correction;

[0013] S4. Record in real time the number of times each touch sensor unit is touched within a period of time, estimate the degree of heat accumulation, estimate the heat transferred to each surrounding LED lamp bead, and calculate the change in RGB value of each LED lamp bead caused by temperature rise;

[0014] S5. When a damaged area with an error is detected by comparing the predicted value of the video frame with the actual received value, the actual RGB values ​​of each LED lamp bead around the damaged area are substituted into the interpolation algorithm of the image reconstruction module to estimate the damaged pixel value based on the correlation between adjacent pixels.

[0015] According to the above technical solution, in S2, the specific method of correcting the influence of temperature on the RGB value of LED lamp beads by using the temperature sensor under the linear regression model is:

[0016] S2-1. The playback control terminal will generate a random color sequence and display it at a specific position through the LED. The detection device will be attached to the LED display screen for detection. If the RGB value actually displayed by the LED lamp bead is inconsistent with the theoretical value, it will be detected. As the LED lamp bead continues to work, the deviation between the RGB theoretical value and the RGB actual value will become larger and larger due to the temperature rise. According to actual experiments, the continuous working time t of the LED lamp bead is obtained. i With temperature rise T i0 Functional relationship T i0 =f(t i );

[0017] S2-2, based on the RGB theoretical value of the established color sequence [R i0 , G i0 、B i0 ]、Temperature T i , RGB detection value detected by the color sensor [R ia , G ia 、B ia ] is input, and the linear regression model parameters are selected, so f(T i )=(R i0 -R ia )+(G i0-G ia )+(B i0 -B ia ), the linear regression model is y=wT i +b, the optimization goal is |f(T i )-y| approaches 0, and the optimal w is obtained by optimizing multiple sets of data collection. k and b k , where k is the number of acquisitions, and the actual RGB value [R i , G i 、B i ]=[R i0 , G i0 、B i0 ]+w k T i +b k , since this process does not consider the temperature rise caused by touch, T i =T i0 , that is, at temperature rise T i0 The relationship between the actual RGB value and the theoretical RGB value is shown below.

[0018] According to the above technical solution, the prerequisite for incorporating RGB value correction in S3 is specifically:

[0019] S3-1, as the LED display screen continues to work, record the continuous working time. Since the temperature rise effect of each LED lamp bead is considered to be equal to each other, according to the continuous working time t of the LED lamp bead in S2-1 i With temperature T i Functional relationship T i0 =f(t i ), and randomly touch multiple touch sensor units of the LED display screen multiple times, and record the touch frequency of each touch sensor unit within a period of time;

[0020] S3-2, use the color sensor to detect the actual RGB values ​​of the LED lamp beads located around the multiple touch sensor units at the same time, combine the RGB theoretical values ​​of these LED lamp beads, and calculate the temperature T in S2-2. i The relationship between the actual RGB value and the theoretical RGB value is related to the temperature T of each LED lamp bead. i Derivation is performed, subtracting the temperature rise T caused by the continuous operation of the LED lamp bead i0 , the cumulative temperature T caused by touch ic =T i -T i0 By performing statistics and combining the positional relationship between each LED lamp bead and each touch sensor unit, a specific computational relationship of the temperature rise effect of the LED lamp bead caused by touch is obtained.

[0021] According to the above technical solution, in said S4, when estimating the degree of heat accumulation, the heat accumulation temperature T of the LED lamp bead caused by touch is ic The specific calculation method is:

[0022] S4-1. When the LED is located directly below the touch sensor unit, for the sake of convenience, only the touch times are considered to be within the normal range. As the touch times accumulate, the touch sensor unit continues to heat up due to repeated power-on and conducts heat to the LED, and the accumulated temperature T ic It is proportional to the number of times g the current touch sensor unit is touched within the detection period t0, that is, Where μ is the touch temperature rise conversion coefficient;

[0023] S4-2, when the LED lamp is located at other positions, since the degree of heat attenuation is proportional to the square of the distance, according to the current position coordinates of the LED lamp (x p ,y p ), and the position coordinates of the touch sensor unit closest to the current LED lamp bead (x q ,y q ), calculate the distance between the current LED lamp bead and the nearest touch sensor unit in the coordinate system get Where δ is the attenuation coefficient of heat with distance.

[0024] According to the above technical solution, in S4, the specific method for calculating the change in RGB value of each LED lamp bead caused by temperature rise is:

[0025] S4-3, according to the temperature T in S2-2 i The current T is obtained by calculating the operational relationship between the actual RGB value and the theoretical RGB value. i , and calculate T according to the continuous working time of the LED lamp beads i0 , the accumulated temperature T caused by touch is obtained ic , then based on the positional relationship between multiple LED lamp beads and adjacent touch sensor units, combined with the number of touches g of each touch sensor unit, substitute into the formulas of S4-1 and S4-2 and calculate the corresponding values ​​of μ and δ, and then average them to obtain the reference values ​​of μ and δ;

[0026] S4-4. When the LED touch screen is normally used for video playback and touch operations, record the continuous working time of the LED touch screen and the touch points, and estimate the difference between the actual RGB value and the theoretical RGB value of each LED lamp bead.

[0027] According to the above technical solution, in S5, the specific method for estimating the damaged pixel value based on the correlation of adjacent pixels is: when no erroneous damaged area is determined, the influence of the deviation on the display of the LED lamp beads themselves is negligible and no intervention is made. When an erroneous damaged area appears, the actual RGB values ​​of the LED lamp beads around the position of the damaged area in the coordinate system are called, and the original RGB theoretical values ​​are overwritten and substituted into the interpolation algorithm of the image reconstruction module for calculation.

[0028] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention records the number of touches on the multi-touch module of the LED touch display screen at regular intervals, estimates the amount of heat accumulation according to the touch frequency of each touch sensing unit, thereby calculating the heat received by the LED lamp beads around the touch sensing unit through heat conduction, correcting the color value distribution of pixels in the image, and thus improving the image reconstruction accuracy of the damaged area of ​​the difference algorithm. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a schematic diagram of the overall module structure of the present invention. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1 The present invention provides a technical solution: an image generation system for an LED display system, the image generation system including a multi-touch module, an LED display module, and a damaged image reconstruction module. The multi-touch module is used to implement a multi-touch function and record touch points. The LED display module uses LED lamp beads to display images and calculates the temperature rise effect of the LED lamp beads themselves. The damaged image reconstruction module is used to compare the predicted value of a video frame with the actual received value to determine whether there is an error, and to reconstruct the damaged area using an interpolation algorithm.

[0033] The multi-touch module includes a touch sensing unit, a touch statistics module, a heat accumulation estimation module, and a coordinate system establishment module. The touch sensing unit is electrically connected to the touch statistics module, which is electrically connected to the heat accumulation estimation module. The touch sensing unit is used to detect touch signals when the screen is touched. The touch statistics module is used to count the number of touches on each touch sensing unit. The heat accumulation estimation module is used to estimate the amount of heat that causes the temperature of each touch sensing unit to rise. The coordinate system establishment module is used to establish a coordinate system based on the arrangement of the touch sensing units.

[0034] The LED display module includes LED lamp beads, a coordinate recording module, a heat receiving calculation module, an RGB value correction module, a working time recording module, a self-heat calculation module, and a color sensor. The coordinate system establishment module is electrically connected to the coordinate recording module, the coordinate recording module is electrically connected to the heat receiving calculation module, the heat receiving calculation module and the self-heat calculation module are both electrically connected to the RGB value correction module, and the working time recording module is electrically connected to the self-heat calculation module. The LED lamp beads are used to display images, the coordinate recording module is used to record the coordinates of each LED lamp bead, the heat receiving calculation module is used to calculate the heat received by each LED lamp bead, the RGB value correction module is used to correct the error between the theoretical value and the actual value of the RGB value, the working time recording module is used to record the working time of the LED lamp bead, the self-heat calculation module is used to calculate the heat generated by the LED lamp bead due to its own work, and the color sensor is used to detect the RGB value of each LED lamp bead;

[0035] The damaged image reconstruction module includes a frame comparison module, an error detection module, an image reconstruction module, and an RGB value entry module. The RGB value correction module is electrically connected to the RGB value entry module. The frame comparison module is electrically connected to the error detection module and the image reconstruction module in sequence. The frame comparison module is used to compare the predicted value of each frame with the actual received value to determine whether there is an error in the current video frame. The error detection module integrates the results of video frame comparison and audio signal analysis to determine whether the RGB value of the current LED lamp bead is wrong. The image reconstruction module calculates and estimates the value of the damaged pixel based on the values ​​of the adjacent pixels, and reconstructs the damaged area based on the correlation of the adjacent pixels. The RGB value entry module is used to enter the RGB value of the LED lamp bead corresponding to each pixel;

[0036] An image generation method for an LED display system comprises the following steps:

[0037] S1. When the touch screen display is put into use, a coordinate system is established for the arrangement of the touch sensor unit and LED lamp beads above, and the position coordinates are marked;

[0038] S2. Attach a detection device with a color sensor to the LED display screen to monitor the color of a specific location on the LED display screen in real time, and use a temperature sensor to correct the effect of temperature on the RGB value of the LED lamp beads under a linear regression model;

[0039] S3. Real-time recording of the working time of the LED display screen, statistics of the temperature increase of each LED lamp bead due to continuous operation, and incorporate it into the prerequisite for RGB value correction;

[0040] S4. Record in real time the number of times each touch sensor unit is touched within a period of time, estimate the degree of heat accumulation, estimate the heat transferred to each surrounding LED lamp bead, and calculate the change in RGB value of each LED lamp bead caused by temperature rise;

[0041] S5. When a damaged area with an error is detected by comparing the predicted value of the video frame with the actual received value, the actual RGB values ​​of each LED lamp bead around the damaged area are substituted into the interpolation algorithm of the image reconstruction module to estimate the damaged pixel value based on the correlation between adjacent pixels;

[0042] In S2, the specific method of using the temperature sensor to correct the effect of temperature on the RGB value of the LED lamp beads under the linear regression model is as follows:

[0043] S2-1. The playback control terminal will generate a random color sequence and display it at a specific position through the LED. The detection device will be attached to the LED display screen for detection. If the RGB value actually displayed by the LED lamp bead is inconsistent with the theoretical value, it will be detected. As the LED lamp bead continues to work, the deviation between the RGB theoretical value and the RGB actual value will become larger and larger due to the temperature rise. According to actual experiments, the continuous working time t of the LED lamp bead is obtained. i With temperature rise T i0 Functional relationship T i0 =f(t i );

[0044] S2-2, based on the RGB theoretical value of the established color sequence [R i0 , G i0 、B i0 ]、Temperature T i , RGB detection value detected by the color sensor [R ia , G ia 、B ia ] is input, and the linear regression model parameters are selected, so f(T i )=(R i0 -R ia )+(G i0 -G ia )+(Bi0 -B ia ), the linear regression model is y=wT i +b, the optimization goal is |f(T i )-y| approaches 0, and the optimal w is obtained by optimizing multiple sets of data collection. k and b k , where k is the number of acquisitions, and the actual RGB value [R i , G i 、B i ]=[R i0 , G i0 、B i0 ]+w k T i +b k , since this process does not consider the temperature rise caused by touch, T i =T i0 , that is, at temperature rise T i0 The relationship between the actual RGB value and the theoretical RGB value;

[0045] In S3, the prerequisites for incorporating RGB value correction are as follows:

[0046] S3-1, as the LED display screen continues to work, record the continuous working time. Since the temperature rise effect of each LED lamp bead is considered to be equal to each other, according to the continuous working time t of the LED lamp bead in S2-1 i With temperature T i Functional relationship T i0 =f(t i ), and randomly touch multiple touch sensor units of the LED display screen multiple times, and record the touch frequency of each touch sensor unit within a period of time;

[0047] S3-2, use the color sensor to detect the actual RGB values ​​of the LED lamp beads located around the multiple touch sensor units at the same time, combine the RGB theoretical values ​​of these LED lamp beads, and calculate the temperature T in S2-2. i The relationship between the actual RGB value and the theoretical RGB value is related to the temperature T of each LED lamp bead. i Derivation is performed, subtracting the temperature rise T caused by the continuous operation of the LED lamp bead i0 , the cumulative temperature T caused by touch ic =T i -T i0 By performing statistics and combining the positional relationship between each LED lamp bead and each touch sensor unit, we can derive the specific calculation relationship of the temperature rise effect of the LED lamp bead caused by touch.

[0048] In S4, when estimating the degree of heat accumulation, the accumulated temperature T of the LED lamp bead caused by touchic The specific calculation method is:

[0049] S4-1. When the LED is located directly below the touch sensor unit, for the sake of convenience, only the touch times are considered to be within the normal range. As the touch times accumulate, the touch sensor unit continues to heat up due to repeated power-on and conducts heat to the LED, and the accumulated temperature T ic It is proportional to the number of times g the current touch sensor unit is touched within the detection period t0, that is, Where μ is the touch temperature rise conversion coefficient;

[0050] S4-2, when the LED lamp is located at other positions, since the degree of heat attenuation is proportional to the square of the distance, according to the current position coordinates of the LED lamp (x p ,y p ), and the position coordinates of the touch sensor unit closest to the current LED lamp bead (x q ,y q ), calculate the distance between the current LED lamp bead and the nearest touch sensor unit in the coordinate system get Where δ is the attenuation coefficient of heat with distance;

[0051] The detection device will only be attached to the LED display screen for detection when the parameters are determined. After the correct parameter calculation relationship is obtained, the detection device can be removed. There is no need to integrate an image sensor on each LED touch screen. Since the parameters of each LED screen are slightly different, one detection device can detect multiple LED touch screens, which can reduce the detection cost and adapt to the properties of different LED screens.

[0052] In S4, the specific method for calculating the change in RGB value of each LED lamp bead due to temperature rise is as follows:

[0053] S4-3, according to the temperature T in S2-2 i The current T is obtained by calculating the operational relationship between the actual RGB value and the theoretical RGB value. i , and calculate T according to the continuous working time of the LED lamp beads i0 , the accumulated temperature T caused by touch is obtained ic , then based on the positional relationship between multiple LED lamp beads and adjacent touch sensor units, combined with the number of touches g of each touch sensor unit, substitute into the formulas of S4-1 and S4-2 and calculate the corresponding values ​​of μ and δ, and then average them to obtain the reference values ​​of μ and δ;

[0054] S4-4. When the LED touch screen is normally used for video playback and touch operation, record the continuous working time of the LED touch screen and the touch points, and estimate the difference between the actual RGB value and the theoretical RGB value of each LED lamp bead;

[0055] In S5, the specific method for estimating the damaged pixel value based on the correlation of adjacent pixels is as follows: when no erroneous damaged area is determined, no intervention is performed because the influence of the deviation on the display of the LED lamp beads themselves is negligible. Due to the hysteresis of the adjustment and the time delay of the calculation, no intervention is performed to reduce the amount of calculation and make the image display smoother without interfering with the image display. When an erroneous damaged area appears, the actual RGB values ​​of the LED lamp beads around the position of the damaged area in the coordinate system are called, and the original RGB theoretical values ​​are overwritten and substituted into the interpolation algorithm of the image reconstruction module for calculation. This process does not involve modifying the original RGB values ​​of the normal LED lamp beads, but only serves as the basis for correcting the RGB values ​​of the damaged area image to prevent weight errors during damage repair.

[0056] By recording the number of touches on the multi-touch module of the LED touch display at regular intervals, the amount of heat accumulation is estimated based on the touch frequency of each touch sensor unit. The heat received by the LED lamp beads around the touch sensor unit through thermal conduction is calculated, and the color value distribution of the pixels in the image is corrected, thereby improving the image reconstruction accuracy of the damaged area of ​​the difference algorithm.

[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0058] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An image generation system for an LED display system, characterized in that: The image generation system includes a multi-touch module, an LED display module, and a damaged image reconstruction module. The multi-touch module is used to implement multi-touch functions and record touch points. The LED display module uses LED lamp beads to display images and calculates the temperature rise effect of the LED lamp beads themselves. The damaged image reconstruction module is used to compare the predicted value of the video frame with the actual received value to determine whether there is an error, and to reconstruct the damaged area using an interpolation algorithm. When estimating the degree of heat accumulation, the accumulated temperature T of the LED lamp beads due to touch ic The specific calculation method is: When the LED lamp bead is located directly below the touch sensor unit, only the touch times are considered to be within the normal range. As the touch times accumulate, the touch sensor unit continues to heat up due to repeated power-on and conducts heat to the LED lamp bead, and the accumulated temperature T ic It is proportional to the number of times g the current touch sensor unit is touched within the detection period t0, that is, Where μ is the touch temperature rise conversion coefficient; When the LED lamp is located at other positions, according to the current position coordinates of the LED lamp (x p ,y p ), and the position coordinates of the touch sensor unit closest to the current LED lamp bead (x q ,y q ), calculate the distance between the current LED lamp bead and the nearest touch sensor unit in the coordinate system get Where δ is the attenuation coefficient of heat with distance; The specific method for calculating the change in RGB value of each LED lamp bead due to temperature rise is as follows: According to the temperature T i The current T is obtained by calculating the operational relationship between the actual RGB value and the theoretical RGB value. i , and calculate T according to the continuous working time of the LED lamp beads i0 , the accumulated temperature T caused by touch is obtained ic , then according to the positional relationship between multiple LED lamp beads and adjacent touch sensor units, combined with the number of touches g of each touch sensor unit, the corresponding μ and δ values ​​are obtained, and the reference values ​​of μ and δ are obtained after averaging; When the LED touch screen is normally used for video playback and touch operations, the continuous working time of the LED touch screen and the touch points are recorded, and the difference between the actual RGB value and the theoretical RGB value of each LED lamp bead is estimated.

2. The image generation system for an LED display system according to claim 1, characterized in that: The multi-touch module includes a touch sensing unit, a touch statistics module, a heat accumulation estimation module, and a coordinate system establishment module. The touch sensing unit is electrically connected to the touch statistics module, and the touch statistics module is electrically connected to the heat accumulation estimation module. The touch sensing unit is used to detect a touch signal when the screen is touched. The touch statistics module is used to count the number of touches on each touch sensing unit. The heat accumulation estimation module is used to estimate the amount of heat that causes the temperature of each touch sensing unit to rise. The coordinate system establishment module is used to establish a coordinate system based on the arrangement of the touch sensing units. The LED display module includes LED lamp beads, a coordinate recording module, a heat receiving calculation module, an RGB value correction module, a working time recording module, a self-heat calculation module, and a color sensor. The coordinate system establishment module is electrically connected to the coordinate recording module, the coordinate recording module is electrically connected to the heat receiving calculation module, the heat receiving calculation module and the self-heat calculation module are both electrically connected to the RGB value correction module, and the working time recording module is electrically connected to the self-heat calculation module. The LED lamp beads are used to display images, the coordinate recording module is used to record the coordinates of each LED lamp bead, the heat receiving calculation module is used to calculate the heat received by each LED lamp bead, the RGB value correction module is used to correct the error between the theoretical value and the actual value of the RGB value, the working time recording module is used to record the working time of the LED lamp bead, the self-heat calculation module is used to calculate the heat generated by the LED lamp bead due to its own work, and the color sensor is used to detect the RGB value of each LED lamp bead; The damaged image reconstruction module includes a frame comparison module, an error detection module, an image reconstruction module, and an RGB value entry module. The RGB value correction module is electrically connected to the RGB value entry module. The frame comparison module is electrically connected to the error detection module and the image reconstruction module in sequence. The frame comparison module is used to compare the predicted value of each frame with the actual received value to determine whether there is an error in the current video frame. The error detection module integrates the results of video frame comparison and audio signal analysis to determine whether there is an error in the RGB value of the current LED lamp bead. The image reconstruction module calculates and estimates the value of the damaged pixel based on the values ​​of the adjacent pixels, and reconstructs the damaged area based on the correlation of the adjacent pixels. The RGB value entry module is used to enter the RGB value of the LED lamp bead corresponding to each pixel.

3. An image generation method for an LED display system, characterized in that: The method operates according to the image generation system of claim 2, comprising the following steps: S1. When the touch screen display is put into use, a coordinate system is established for the arrangement of the touch sensor unit and LED lamp beads above, and the position coordinates are marked; S2. Attach a detection device with a color sensor to the LED display screen to monitor the color of the LED display screen in real time, and use a temperature sensor to correct the effect of temperature on the RGB value of the LED lamp beads under a linear regression model; S3. Real-time recording of the working time of the LED display screen, statistics of the temperature increase of each LED lamp bead due to continuous operation, and incorporate it into the prerequisite for RGB value correction; S4. Record in real time the number of times each touch sensor unit is touched within a period of time, estimate the degree of heat accumulation, estimate the heat transferred to each surrounding LED lamp bead, and calculate the change in RGB value of each LED lamp bead caused by temperature rise; S5. When a damaged area with an error is detected by comparing the predicted value of the video frame with the actual received value, the actual RGB values ​​of each LED lamp bead around the damaged area are substituted into the interpolation algorithm of the image reconstruction module to estimate the damaged pixel value based on the correlation between adjacent pixels.

4. The image generation method for an LED display system according to claim 3, wherein: In S2, the specific method of correcting the influence of temperature on the RGB value of the LED lamp bead by using the temperature sensor under the linear regression model is: S2-1. The playback control terminal will generate a random color sequence and display it through the LED. The detection device will be attached to the LED display screen for detection. If the RGB value actually displayed by the LED lamp bead is inconsistent with the theoretical value, it will be detected. According to the actual experiment, the continuous working time t of the LED lamp bead is obtained. i With temperature rise T i0 Functional relationship T i0 =f(t i ); S2-2, based on the RGB theoretical value of the established color sequence [R i0 , G i0 、B i0 ]、Temperature T i , RGB detection value detected by the color sensor [R ia , G ia 、B ia ] is input, and the linear regression model parameters are selected, so f(T i )=(R i0 -R ia )+(G i0 -G ia )+(B i0 -B ia ), the linear regression model is y=wT i +b, the optimization goal is |f(T i )-y| approaches 0, and the optimal w is obtained by optimizing multiple sets of data collection. k and b k , where k is the number of acquisitions, and the actual RGB value [R i , G i 、B i ]=[R i0 , G i0 、B i0 ]+w k T i +b k , so T i =T i0 , that is, at temperature rise T i0 The relationship between the actual RGB value and the theoretical RGB value is shown below.

5. The image generation method for an LED display system according to claim 4, characterized in that: In S3, the prerequisites for incorporating RGB value correction are specifically: S3-1, as the LED display screen continues to work, record the continuous working time, according to the continuous working time t of the LED lamp beads in S2-1 i With temperature T i Functional relationship T i0 =f(t i ), and randomly touch multiple touch sensor units of the LED display screen multiple times, and record the touch frequency of each touch sensor unit within a period of time; S3-2, use the color sensor to detect the actual RGB values ​​of the LED lamp beads located around the multiple touch sensor units at the same time, combine the RGB theoretical values ​​of these LED lamp beads, and calculate the temperature T in S2-2. i The relationship between the actual RGB value and the theoretical RGB value is related to the temperature T of each LED lamp bead. i Derivation is performed, subtracting the temperature rise T caused by the continuous operation of the LED lamp bead i0 , the cumulative temperature T caused by touch ic =T i -T i0 By performing statistics and combining the positional relationship between each LED lamp bead and each touch sensor unit, a specific computational relationship of the temperature rise effect of the LED lamp bead caused by touch is obtained.

6. The image generation method for an LED display system according to claim 5, characterized in that: In the above S5, the specific method for estimating the damaged pixel value based on the correlation of adjacent pixels is: when an erroneous damaged area appears, the actual RGB values ​​of the LED lamp beads around the position where the damaged area is located in the coordinate system are called, the original RGB theoretical values ​​are overwritten and substituted into the interpolation algorithm of the image reconstruction module for calculation.

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