CN114927091B - Thermal screen effect processing method, device and system for LED display screen - Google Patents
Thermal screen effect processing method, device and system for LED display screen Download PDFInfo
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- CN114927091B CN114927091B CN202210602047.XA CN202210602047A CN114927091B CN 114927091 B CN114927091 B CN 114927091B CN 202210602047 A CN202210602047 A CN 202210602047A CN 114927091 B CN114927091 B CN 114927091B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
Abstract
The invention discloses a heat shield effect processing method, a device and a system of an LED display screen, wherein the method comprises the following steps: acquiring cross line models of the box body in the LED display screen at different preset temperature values; determining a target reticle model corresponding to the current temperature value of each box according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value and the twenty-first reticle model corresponding to the second target temperature value of each box; and correcting the lamp points in each box body according to the target cross line model of each box body so as to eliminate the heat shield effect of the LED display screen. The target cross line model corresponding to the current temperature value can be obtained through the preset temperature values and the corresponding cross line model, each box body in the LED display screen is corrected, a new correction coefficient model is not required to be generated, the phenomenon of black screen when the correction model is issued is avoided, and the correction effect and the display effect are ensured.
Description
Technical Field
The invention discloses the technical field of LED display screen correction, in particular to a thermal screen effect processing method, device and system of an LED display screen.
Background
In the LED display screen, the difference in brightness of the screen display may occur due to the uneven temperature distribution of the screen body, and this difference in brightness of the screen is referred to as a "cross-hair" phenomenon in the industry.
In the prior art, the 'reticle' phenomenon is corrected through a reticle model, however, as the temperature of a box body in an LED display screen is changed in real time, different reticle models are corresponding to different temperatures, a screen can only store one set or a limited set of correction models, when the temperature of the box body in the screen is changed, a new correction model needs to be regenerated and issued to a receiving card in the LED display screen, and a black screen phenomenon can be caused in the LED display screen in the process of sending the correction model, so that the display effect is influenced, the process of replacing the correction model is very troublesome, the operation speed is slow, and correction data is very easy to lose due to misoperation.
Therefore, a new solution to the above-mentioned problems is needed for those skilled in the art.
Disclosure of Invention
In order to overcome the problems in the related art, the invention discloses a heat shield effect processing method, a heat shield effect processing device and a heat shield effect processing system for an LED display screen.
According to a first aspect of the disclosed embodiment of the invention, there is provided a thermal screen effect processing method of an LED display screen, the method comprising:
acquiring cross line models of the box body in the LED display screen at different preset temperature values;
acquiring a current temperature value of each box body in the LED display screen;
determining a first target temperature value and a second target temperature value which are closest to the current temperature value of each box body in the preset temperature values, wherein the first target temperature value is smaller than the second target temperature value;
determining a target reticle model corresponding to the current temperature value of each box according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value and the twenty-first reticle model corresponding to the second target temperature value of each box;
and correcting the lamp points in the box body according to the target cross line model of each box body so as to eliminate the heat shield effect of the LED display screen.
Optionally, obtaining a reticle model of the box body in the LED display screen at different preset temperature values includes:
determining a plurality of preset temperature values and the number of each box in the LED display screen;
acquiring original correction coefficients of boxes with different numbers in a cold screen state and screen correction coefficients of boxes with different numbers in each preset temperature value;
according to the original correction coefficients of the boxes with different numbers and the screen correction coefficients of the boxes with different numbers at each preset temperature value, determining a cross line model of the boxes with different numbers at each preset temperature value through a cross line model determining strategy, wherein the cross line model determining strategy is coeffdelt=coef1/coef 0, coef0 is the original correction coefficient in a cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coeffdelt is the cross line model corresponding to the preset temperature value.
Optionally, the obtaining the current temperature value of each box in the LED display screen includes:
collecting the current temperature value of the box body through temperature collecting equipment arranged on the box bodies with different numbers;
and acquiring the current temperature value of each box body in the LED display screen transmitted by the temperature acquisition equipment on the box body.
Optionally, the determining, among the plurality of preset temperature values, a first target temperature value and a second target temperature value closest to the current temperature value of each box body includes:
dividing all preset temperature values smaller than the current temperature value into a first set according to the value of the current temperature value, and dividing all preset temperature values larger than or equal to the current temperature value into a second set;
selecting a preset temperature value with the largest numerical value in the first set as a first target temperature value;
and selecting the preset temperature value with the smallest numerical value in the second set as a second target temperature value.
Optionally, the determining, according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value, and the second reticle model corresponding to the second target temperature value, the target reticle model corresponding to the current temperature value of each box includes:
determining a first reticle model A corresponding to a first target temperature value a of the box with different numbers and a second reticle model B corresponding to a second target temperature value b of the box with different numbers in a plurality of reticle models corresponding to the box with different numbers;
the target reticle model ModelC=ModelB [ (c-a)/(b-a) ] +ModelA [1- (c-a)/(b-a) ] corresponding to the current temperature value c of the different numbered boxes is determined based on the current temperature value c, the first target temperature value a, the second target temperature value b, the first reticle model ModelA and the second reticle model ModelB of the different numbered boxes.
Optionally, the correcting the lamp points in the box according to the target reticle model of each box to eliminate the heat shield effect of the LED display screen includes:
acquiring original image data to be displayed of boxes with different numbers in the LED display screen under the current temperature value;
determining an original brightness value of each lamp point in the box body according to the original image data of the box bodies with different numbers;
correcting the original brightness value of each lamp point in the box body through the target cross line model corresponding to the box body with different numbers to obtain the target brightness value of each lamp point in the box body with different numbers;
and acquiring target image data of boxes with different numbers according to the target brightness value of each lamp point so as to eliminate the heat shield effect of the LED display screen.
According to a second aspect of the disclosed embodiments of the present invention, there is provided a thermal screen effect processing apparatus of an LED display screen, the apparatus comprising:
the cross line model acquisition module is used for acquiring cross line models of the box body in the LED display screen at different preset temperature values;
the current temperature value acquisition module is connected with the cross line model acquisition module and used for acquiring the current temperature value of each box body in the LED display screen;
the target temperature value acquisition module is connected with the current temperature value acquisition module, and a first target temperature value and a second target temperature value which are closest to the value of the current temperature value of each box body are determined in the preset temperature values, wherein the first target temperature value is smaller than the second target temperature value;
the target model acquisition module is connected with the target temperature value acquisition module, and determines a target reticle model corresponding to the current temperature value of each box according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value and the second reticle model corresponding to the second target temperature value of each box;
and the heat shield effect processing module is connected with the target model acquisition module, and corrects the lamp points in the box body according to the target cross line model of each box body so as to eliminate the heat shield effect of the LED display screen.
Optionally, the reticle model obtaining module includes:
the temperature value acquisition unit is used for determining a plurality of preset temperature values and the number of each box body in the LED display screen;
the coefficient acquisition unit is connected with the temperature value acquisition unit and used for acquiring original correction coefficients of the boxes with different numbers in a cold screen state and screen correction coefficients of the boxes with different numbers in each preset temperature value;
the cross line model obtaining unit is connected with the coefficient obtaining unit, and determines cross line models of the boxes with different numbers at each preset temperature value according to original correction coefficients of the boxes with different numbers and screen correction coefficients of the boxes with different numbers at each preset temperature value through a cross line model determining strategy, wherein the cross line model determining strategy is coeffdelt=coef1/coef0, coef0 is the original correction coefficient in a cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coeffdelt is the cross line model corresponding to the preset temperature value.
Optionally, the target model obtaining module includes:
an interpolation model obtaining unit for determining a first reticle model A corresponding to a first target temperature value a of the box with different numbers and a second reticle model B corresponding to a second target temperature value b of the box with different numbers in a plurality of reticle models corresponding to the box with different numbers;
the target model acquisition unit is connected with the interpolation model acquisition unit, and determines a target reticle model ModelC=ModelB [ (c-a)/(b-a) ]+ModelA [1- (c-a)/(b-a) ] corresponding to the current temperature value c of the box with different numbers according to the current temperature value c, the first target temperature value a, the second target temperature value b, the first reticle model ModelA and the second reticle model ModelB of the box with different numbers.
According to a third aspect of the disclosed embodiments of the present invention, there is provided a thermal screen effect processing system of an LED display screen, including a thermal screen effect processing device of an LED display screen according to the second aspect of the disclosed embodiments of the present invention, an LED display screen including a plurality of cases, a firmware memory, and a temperature acquisition device;
each box body of the LED display screen is provided with a temperature acquisition device, and each temperature acquisition device is used for acquiring the current temperature value of the box body and sending the current temperature value to a heat screen effect processing device of the LED display screen;
the firmware memory is positioned in the transmitting equipment, the main control server or the broadcasting control server and is used for receiving and storing the plurality of preset temperature values and the cross line model of each box body under different preset temperature values;
the heat shield effect processing device of the LED display screen is respectively connected with the temperature acquisition equipment and the firmware memory and is used for realizing the heat shield effect processing method of the LED display screen according to the current temperature value acquired by the temperature acquisition equipment, a plurality of preset temperature values stored in the firmware memory and cross line models of each box body under different preset temperature values.
In summary, the present disclosure relates to a method, a device and a system for processing a heat shield effect of an LED display screen, where the method includes: acquiring cross line models of the box body in the LED display screen at different preset temperature values; determining a target reticle model corresponding to the current temperature value of each box according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value and the twenty-first reticle model corresponding to the second target temperature value of each box; and correcting the lamp points in each box body according to the target cross line model of each box body so as to eliminate the heat shield effect of the LED display screen. The target cross line model corresponding to the current temperature value can be obtained through the preset temperature values and the corresponding cross line model, so that the heat shield correction of each box body in the LED display screen is adapted to the temperature of the real-time change of the box body, a new correction coefficient model is not required to be generated when the temperature changes, the phenomenon that the LED display screen is black when the correction model is issued to the receiving card is avoided, the correction effect and the display effect are ensured, the operation speed is high, the operation is simple and convenient, and correction data loss cannot be caused.
In addition, only a plurality of cross line models corresponding to preset temperature values are stored, so that occupation of hardware memory resources can be reduced.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a flow chart illustrating a method of thermal screen effect processing for an LED display screen according to an exemplary embodiment;
FIG. 2 is a schematic diagram showing the brightness of a red light point according to the temperature;
FIG. 3 is a flow chart of a method of reticle model determination according to the one illustrated in FIG. 1;
FIG. 4 is a flow chart of a target reticle model determination method according to the one illustrated in FIG. 1;
FIG. 5 is a block diagram illustrating a thermal screen effect processing apparatus for an LED display screen according to an exemplary embodiment;
FIG. 6 is a block diagram of a cross-hair model acquisition module according to the one shown in FIG. 5;
fig. 7 is a block diagram of a target acquisition module according to the one shown in fig. 5.
Detailed Description
The following describes in detail the embodiments of the present disclosure with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
FIG. 1 is a flow chart illustrating a method of thermal screen effect processing for an LED display screen, according to an exemplary embodiment, as shown in FIG. 1, the method comprising:
in step 101, a reticle model of a box body in the LED display screen at different preset temperature values is obtained.
For example, due to the structural characteristics of the LED display screen, the temperatures at different positions on the display screen are not the same, i.e. a phenomenon of inconsistent temperature can occur between different boxes. However, as the temperature increases, the brightness of the light points in the LED display screen gradually decreases in an approximately linear manner (generally referred to as a heat shield effect), and among the three types of light points R, G, B, particularly, the red light point (R light point) is most serious. Fig. 2 is a schematic diagram showing the change of the brightness of the red light point with the temperature, and as can be seen from fig. 2, the brightness value of the R light point decreases with the increase of the temperature, and the rule of being approximately linear is presented. Therefore, the thermal screen effect can influence the display of the picture to be played by the LED display screen, is very important to the processing of the thermal screen effect of the LED display screen caused by temperature change, and can correspond to different processing modes (namely, different correction coefficients in the processing models corresponding to different boxes) due to different temperatures.
In the embodiment of the invention, the heat shield effect caused by temperature change is processed through the cross line model, and the method aims at the problems that the temperatures of different boxes in the LED display screen are different and the temperatures on the boxes change at any time in the using process of the LED display screen, adopts a method for acquiring the cross line model corresponding to a plurality of preset temperature values in advance, and adjusts the cross line model acquired in advance according to the current temperature value of each box so as to acquire a target cross line model of the box under the current temperature value and correct the brightness value of a lamp point on the box to eliminate the influence of the heat shield effect.
When the cross line models under the different preset temperature values are obtained, the LED display screen to be processed is taken as an obtained object, and the cross line models of each box body under the different preset temperature values are respectively obtained for each box body in the LED display screen.
Specifically, fig. 3 is a flowchart of a method for determining a reticle model according to the method shown in fig. 1, and as shown in fig. 3, the step 101 includes:
in step 1011, a number of preset temperature values and the number of each box in the LED display screen are determined.
For example, in general, the specifications and types of the boxes in the same LED display screen (i.e., the box structures) are the same, so after the reticle model of the box in the LED display screen at each preset temperature value is obtained in step 101, the reticle model at each preset temperature value can be directly used in the subsequent determination of the target reticle model of other boxes in the LED display screen and the heat shield effect processing (i.e., in the same LED display screen, it is not necessary to distinguish whether the box performing the heat shield effect processing is the same box as the box obtaining the reticle model at the preset temperature value).
However, in the practical application process, the same LED display screen also includes boxes with different specifications and models, and at this time, it is required to distinguish whether the box for performing the heat shielding effect processing is the same specification and model as the box for obtaining the reticle model at the preset temperature value. It can be understood that after obtaining the corresponding reticle model of each box at different preset temperature values through steps 1011-1013 in the disclosed embodiment of the present invention, it is also necessary to determine the specification and model (i.e. the box structure) of each box, classify the reticle models at the different preset temperature values according to the box structure, and store only the preset temperature values and the reticle models corresponding to several different box structures. In this way, in the process of subsequently processing the heat shield effect, aiming at the current temperature value of a certain box body, the cross line model of the box body with the same specification and model under different temperature values needs to be obtained according to the box body structure of the box body, and the target cross line model under the current temperature value of the box body needs to be called. Therefore, in order to facilitate distinguishing between different specifications and types of boxes in the LED display screen, in the embodiment of the present disclosure, the boxes are distinguished by obtaining the number of each box. For example, the number of the box may be: 001. 002, 003, … …, 060, etc., wherein the numbers 001, 002, 003, … …, 030 are boxes under the same box structure, and the numbers 031, 032, 033, … …, 060 are boxes under another box structure, so that only the reticle models corresponding to the two box structures under different preset temperature values need to be stored. In the following step, if the box with the number 009 needs to be subjected to heat shielding effect processing, only different preset temperature values and cross line models under the corresponding box structure need to be found according to the number of the box, and in the disclosed embodiment of the invention, the cross line models corresponding to the different preset temperature values corresponding to the first box structure need to be obtained for the box with the number 009, and the current temperature value of the box with the number 009 is referred to, so that the target cross line model is obtained. Therefore, different cross line models corresponding to each box body structure in the LED display screen are always kept to process the heat shield effect of each box body by using the cross line model of the same box body structure, and the problem that correction results are deviated due to the fact that correction models are different in model and specification (different in structure) of the box bodies can be solved.
It should be noted that in the practical application process, multiple methods for distinguishing different boxes in the LED display screen can be selected according to the practical application scene, which is not limited by the disclosed embodiments of the present invention.
In step 1012, the original correction coefficients of the boxes with different numbers in the cold screen state and the screen correction coefficients of the boxes with different numbers in each preset temperature value are obtained.
In step 1013, the reticle model of the different numbered boxes at each preset temperature value is determined according to the original correction coefficients of the different numbered boxes and the screen correction coefficients of the different numbered boxes at each preset temperature value by the reticle model determination strategy.
The cross-hair model determining strategy is coeffdelt=coef1/coef0, coef0 is an original correction coefficient in the cold screen state, coef1 is a screen correction coefficient in the preset temperature value, and coeffdelt is a cross-hair model corresponding to the preset temperature value.
For example, for different numbered boxes, the reticle models of the boxes at different preset temperature values are respectively obtained, wherein the reticle models are obtained according to an original correction coefficient in a cold screen state and a screen correction coefficient in a hot screen state, and it can be understood that the temperature value in the cold screen state is that of the room temperature.
In addition, after the cross line models of the boxes with different numbers under each preset temperature value are obtained, and after the box structure is determined, the cross line models under each preset temperature value corresponding to the different box structures are stored in firmware memories such as a transmitting device, a main control server or a broadcast control server, so that the stored preset temperature values and the cross line models are called for processing in the subsequent thermal shielding effect processing process of the boxes with the same box structure.
For example, the reticle models of the boxes of different box structures at each preset temperature value may be stored as a data set, and the data set may be named by the specification and model of the box. In this way, in the subsequent heat shield effect processing process, if the current temperature value of a certain box is obtained, the corresponding box structure is determined according to the number of the box, the data set corresponding to the box structure is called from the sending device, the main control server or the broadcasting control server, and the target cross line model under the current temperature value of the box is obtained according to the preset temperature value and the cross line model in the data packet.
In step 102, a current temperature value for each bin in the LED display is obtained.
Specifically, the current temperature value of the box body is acquired through temperature acquisition equipment arranged on the box bodies with different numbers; and acquiring the current temperature value of each box body in the LED display screen transmitted by the temperature acquisition equipment on the box body.
Typically, a temperature acquisition device (temperature sensor) is disposed in each box body, and is used for acquiring a current temperature value of the box body in real time, and the current temperature value acquired by the temperature acquisition device is acquired in the embodiment disclosed in the invention, so that a target cross line model of the box body is determined according to the current temperature value.
In step 103, a first target temperature value and a second target temperature value closest to the value of the current temperature value of each box are determined from the plurality of preset temperature values.
Wherein the first target temperature value is less than the second target temperature value.
Specifically, according to the numerical value of the current temperature value, all preset temperature values smaller than the current temperature value are divided into a first set, and all preset temperature values larger than or equal to the current temperature value are divided into a second set; selecting a preset temperature value with the largest numerical value in the first set as a first target temperature value; and selecting the preset temperature value with the smallest value in the second set as a second target temperature value.
For example, after the current temperature value of the box is obtained, two values closest to the current temperature value are determined from a plurality of preset temperature values corresponding to the box, and the two values are used as a first target temperature value and a second target temperature value. For example, the plurality of preset temperature values may be set to be temperature values distributed in an arithmetic progression, 20 ℃, 30 ℃, 40 ℃, 50 ℃, 60 ℃, 70 ℃, etc., such that when the magnitude of the current temperature value of the case is between the magnitude of some two preset temperature values, the two preset temperature values are taken as the first target temperature value and the second target temperature value, and the preset temperature value having the smaller magnitude is the first target temperature value. For example, if the current temperature value is 57 ℃, it may be determined that the first target temperature value is 50 ℃ and the second target temperature value is 60 ℃.
It will be appreciated that when the upper computer software determines between which two preset temperature values the magnitude of the current temperature value is, the current temperature value may be compared with each preset temperature value, all preset temperature values having a value less than the current temperature value are divided into the first set, e.g. 20 ℃, 30 ℃, 40 ℃ and 50 ℃ in the above example are all less than 57 ℃ of the current temperature value, and thus in the first set, all preset temperature values having a value greater than the current temperature value are divided into the second set, e.g. 60 ℃ and 70 ℃ in the above example are all greater than 57 ℃ of the current temperature value, and thus in the second set. Thus, a maximum value of 50 ℃ is selected from the first set as the first target temperature value, and a minimum value of 60 ℃ is selected from the second set as the second target temperature value.
In step 104, a target reticle model corresponding to the current temperature value of each tank is determined according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value, and the second reticle model corresponding to the second target temperature value of each tank.
Illustratively, and as specifically shown in FIG. 4, FIG. 4 is a flow chart of a target reticle model determination method according to the one shown in FIG. 1, the step 104 comprising:
in step 1041, among the several reticle models corresponding to the different numbered bins, a first reticle model a corresponding to the first target temperature value a of the different numbered bins and a second reticle model b corresponding to the second target temperature value b of the different numbered bins are determined.
In step 1042, a target reticle model c corresponding to the current temperature value c of the different numbered bins is determined according to the current temperature value c, the first target temperature value a, the second target temperature value b, the first reticle model a and the second reticle model b of the different numbered bins.
Wherein the target reticle model modelc=modelb [ (c-a)/(b-a) ]+modela [1- (c-a)/(b-a) ].
For example, after determining the first target temperature value and the second target temperature value corresponding to the current temperature value of the box, the first reticle model and the second reticle model corresponding to the first target temperature value and the second reticle model corresponding to the second temperature value are obtained, so that the target reticle model corresponding to the current temperature value can be determined by interpolation according to the first target temperature value, the second target temperature value, the current temperature value, the first reticle model and the second reticle model.
Therefore, only a plurality of cross line models under preset temperature values are stored in the sending equipment, the main control server or the broadcasting control server, more hardware memory resources are not occupied, and the target cross line model under each current temperature value can be determined through an interpolation method. In addition, the correction model is not required to be regenerated when the temperature value of the box body changes, only the stored cross line model is required to be subjected to interpolation calculation, and after the target cross line model is generated in the embodiment of the invention, the box body is directly corrected (heat shield effect processing) in the sending equipment, the correction model is not required to be issued to the receiving card, and the problem that the display effect is affected due to the fact that a screen may be black when the correction model is regenerated and issued to the receiving card corresponding to the box body is avoided.
In step 105, the lamp points in each box are corrected according to the target reticle model of the box, so as to eliminate the heat shield effect of the LED display screen.
Specifically, under the current temperature value, acquiring original image data to be displayed of boxes with different numbers in the LED display screen; determining an original brightness value of each lamp point in the box body according to the original image data of the box bodies with different numbers; correcting the original brightness value of each lamp point in the box body through the target cross line model corresponding to the box body with different numbers to obtain the target brightness value of each lamp point in the box body with different numbers; and acquiring target image data of boxes with different numbers according to the target brightness value of each lamp point so as to eliminate the heat shield effect of the LED display screen.
For example, after the target reticle model of each box is obtained, for the original image data to be displayed in the box (the original image data corresponding to each box is obtained by dividing the picture content corresponding to the large screen), the original image data may be corrected by the way that the original image data is the target reticle model=the target image data. It can be understood that the above correction process is to determine the original brightness value of each lamp point in the box according to the original image data, correct the brightness value of each lamp point by using the target reticle model, so that when the lamp point displays the target brightness value, the target image data corresponding to the box can be obtained, thereby eliminating the influence caused by the thermal screen effect of the box, and completing the thermal screen effect processing process of the box. After the heat shield effect treatment is carried out on each box body, the whole heat shield effect treatment process of the LED display screen is completed.
Fig. 5 is a block diagram illustrating a thermal screen effect processing apparatus of an LED display screen according to an exemplary embodiment, and as shown in fig. 5, the apparatus 500 includes:
the cross line model obtaining module 510 is used for obtaining cross line models of the box body in the LED display screen under different preset temperature values;
the current temperature value acquisition module 520 is connected with the cross line model acquisition module 510 and acquires the current temperature value of each box body in the LED display screen;
the target temperature value obtaining module 530 is connected to the current temperature value obtaining module 520, and determines a first target temperature value and a second target temperature value closest to the current temperature value of each box in the plurality of preset temperature values, wherein the first target temperature value is smaller than the second target temperature value;
the target model obtaining module 540 is connected to the target temperature value obtaining module 530, and determines a target reticle model corresponding to the current temperature value of each box according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value, and the second reticle model corresponding to the second target temperature value of each box;
the heat shield effect processing module 550 is connected to the target model obtaining module 540, and corrects the lamp points in the box according to the target reticle model of each box, so as to eliminate the heat shield effect of the LED display screen.
Fig. 6 is a block diagram of a cross-hair model acquisition module according to the one shown in fig. 5, and as shown in fig. 6, the cross-hair model acquisition module 510 includes:
a temperature value obtaining unit 511 for determining a plurality of preset temperature values and the number of each box in the LED display screen;
a coefficient obtaining unit 512, connected to the temperature value obtaining unit 511, for obtaining original correction coefficients of the boxes with different numbers in the cold screen state, and screen correction coefficients of the boxes with different numbers in each preset temperature value;
the cross line model obtaining unit 513 is connected to the coefficient obtaining unit 512, and determines a cross line model of the different numbered boxes at each preset temperature value according to a cross line model determining policy according to the original correction coefficient of the different numbered boxes and the screen correction coefficient of the different numbered boxes at each preset temperature value, where the cross line model determining policy is coeffdelt=coef1/coef0, coef0 is the original correction coefficient in the cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coeffdelt is the cross line model corresponding to the preset temperature value.
Fig. 7 is a block diagram of a target acquisition module according to the one shown in fig. 5, and as shown in fig. 7, the target model acquisition module 540 includes:
an interpolation model obtaining unit 541 that determines, among a plurality of reticle models corresponding to different-numbered boxes, a first reticle model a corresponding to a first target temperature value a of the different-numbered boxes, and a second reticle model b corresponding to a second target temperature value b of the different-numbered boxes;
the target model acquisition unit 542 is connected to the interpolation model acquisition unit 541, and determines a target reticle model c=model b [ (c-a)/(b-a) ]+model a [1- (c-a)/(b-a) ] corresponding to the current temperature value c of the different numbered boxes, based on the current temperature value c, the first target temperature value a, the second target temperature value b, the first reticle model a, and the second reticle model b of the different numbered boxes.
The embodiment of the invention also provides a heat shield effect processing system of the LED display screen, which comprises a heat shield effect processing device of the LED display screen, the LED display screen comprising a plurality of boxes, a firmware memory and temperature acquisition equipment;
each box body of the LED display screen is provided with a temperature acquisition device, and each temperature acquisition device is used for acquiring the current temperature value of the box body and transmitting the current temperature value to a heat screen effect processing device of the LED display screen;
the firmware memory is positioned in the transmitting equipment, the main control server or the broadcasting control server and is used for receiving and storing the plurality of preset temperature values and the cross line model of each box body under different preset temperature values;
the heat shield effect processing device of the LED display screen is respectively connected with the temperature acquisition equipment and the firmware memory and is used for realizing the heat shield effect processing method of the LED display screen according to the current temperature value acquired by the temperature acquisition equipment, a plurality of preset temperature values stored in the firmware memory and cross line models of each box body under different preset temperature values.
In summary, the present disclosure relates to a method, a device and a system for processing a heat shield effect of an LED display screen, where the method includes: acquiring cross line models of the box body in the LED display screen at different preset temperature values; determining a target reticle model corresponding to the current temperature value of each box according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value and the twenty-first reticle model corresponding to the second target temperature value of each box; and correcting the lamp points in each box body according to the target cross line model of each box body so as to eliminate the heat shield effect of the LED display screen. The target cross line model corresponding to the current temperature value can be obtained through the preset temperature values and the corresponding cross line model, so that the heat shield correction of each box body in the LED display screen is adapted to the temperature of the real-time change of the box body, a new correction coefficient model is not required to be generated when the temperature changes, the phenomenon that the LED display screen is black when the correction model is issued to the receiving card is avoided, the correction effect and the display effect are ensured, the operation speed is high, the operation is simple and convenient, and correction data loss cannot be caused.
In addition, only a plurality of cross line models corresponding to preset temperature values are stored, so that occupation of hardware memory resources can be reduced.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (9)
1. A method for processing a thermal screen effect of an LED display screen, the method comprising:
acquiring cross line models of the box body in the LED display screen at different preset temperature values;
acquiring a current temperature value of each box body in the LED display screen;
determining a first target temperature value and a second target temperature value which are closest to the current temperature value of each box body in a plurality of preset temperature values, wherein the first target temperature value is smaller than the second target temperature value;
determining a target reticle model corresponding to the current temperature value of each box according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value and the twenty-first reticle model corresponding to the second target temperature value of each box;
correcting the lamp points in each box body according to the target cross line model of each box body so as to eliminate the heat screen effect of the LED display screen;
the determining, among the plurality of preset temperature values, a first target temperature value and a second target temperature value closest to the value of the current temperature value of each box body includes: dividing all preset temperature values smaller than the current temperature value into a first set according to the value of the current temperature value, and dividing all preset temperature values larger than or equal to the current temperature value into a second set; selecting a preset temperature value with the largest numerical value in the first set as a first target temperature value; and selecting the preset temperature value with the smallest numerical value in the second set as a second target temperature value.
2. The method for processing the thermal screen effect of the LED display screen according to claim 1, wherein the obtaining the reticle model of the box body in the LED display screen at different preset temperature values comprises:
determining a plurality of preset temperature values and the number of each box in the LED display screen;
acquiring original correction coefficients of boxes with different numbers in a cold screen state and screen correction coefficients of boxes with different numbers in each preset temperature value;
according to the original correction coefficients of the boxes with different numbers and the screen correction coefficients of the boxes with different numbers at each preset temperature value, determining a cross line model of the boxes with different numbers at each preset temperature value through a cross line model determining strategy, wherein the cross line model determining strategy is coeffdelt=coef1/coef 0, coef0 is the original correction coefficient in a cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coeffdelt is the cross line model corresponding to the preset temperature value.
3. The method for processing the thermal screen effect of the LED display screen according to claim 2, wherein the obtaining the current temperature value of each box in the LED display screen comprises:
collecting the current temperature value of the box body through temperature collecting equipment arranged on the box bodies with different numbers;
and acquiring the current temperature value of each box body in the LED display screen transmitted by the temperature acquisition equipment on the box body.
4. The method for processing the thermal screen effect of the LED display screen according to claim 2, wherein determining the target reticle model corresponding to the current temperature value of each case according to the current temperature value of each case, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value, and the second reticle model corresponding to the second target temperature value, comprises:
determining a first reticle model A corresponding to a first target temperature value a of the box with different numbers and a second reticle model B corresponding to a second target temperature value b of the box with different numbers in a plurality of reticle models corresponding to the box with different numbers;
the target reticle model ModelC=ModelB [ (c-a)/(b-a) ] +ModelA [1- (c-a)/(b-a) ] corresponding to the current temperature value c of the different numbered boxes is determined based on the current temperature value c, the first target temperature value a, the second target temperature value b, the first reticle model ModelA and the second reticle model ModelB of the different numbered boxes.
5. The method for processing the thermal screen effect of the LED display screen according to claim 2, wherein the correcting the lamp points in the box according to the target reticle model of each box to eliminate the thermal screen effect of the LED display screen comprises:
acquiring original image data to be displayed of boxes with different numbers in the LED display screen under the current temperature value;
determining an original brightness value of each lamp point in the box body according to the original image data of the box bodies with different numbers;
correcting the original brightness value of each lamp point in the box body through the target cross line model corresponding to the box body with different numbers to obtain the target brightness value of each lamp point in the box body with different numbers;
and acquiring target image data of boxes with different numbers according to the target brightness value of each lamp point so as to eliminate the heat shield effect of the LED display screen.
6. A thermal screen effect processing apparatus for an LED display screen, the apparatus comprising:
the cross line model acquisition module is used for acquiring cross line models of the box body in the LED display screen at different preset temperature values;
the current temperature value acquisition module is connected with the cross line model acquisition module and used for acquiring the current temperature value of each box body in the LED display screen;
the target temperature value acquisition module is connected with the current temperature value acquisition module, and a first target temperature value and a second target temperature value which are closest to the current temperature value of each box body are determined in a plurality of preset temperature values, wherein the first target temperature value is smaller than the second target temperature value;
the target model acquisition module is connected with the target temperature value acquisition module, and determines a target reticle model corresponding to the current temperature value of each box according to the current temperature value, the first target temperature value, the second target temperature value, the first reticle model corresponding to the first target temperature value and the second reticle model corresponding to the second target temperature value of each box;
the heat shield effect processing module is connected with the target model acquisition module, and corrects the lamp points in the box body according to the target cross line model of each box body so as to eliminate the heat shield effect of the LED display screen;
the determining, among the plurality of preset temperature values, a first target temperature value and a second target temperature value closest to the value of the current temperature value of each box body includes: dividing all preset temperature values smaller than the current temperature value into a first set according to the value of the current temperature value, and dividing all preset temperature values larger than or equal to the current temperature value into a second set; selecting a preset temperature value with the largest numerical value in the first set as a first target temperature value; and selecting the preset temperature value with the smallest numerical value in the second set as a second target temperature value.
7. The LED display screen heat shield effect processing apparatus of claim 6, wherein the reticle model acquisition module comprises:
the temperature value acquisition unit is used for determining a plurality of preset temperature values and the number of each box body in the LED display screen;
the coefficient acquisition unit is connected with the temperature value acquisition unit and used for acquiring original correction coefficients of the boxes with different numbers in a cold screen state and screen correction coefficients of the boxes with different numbers in each preset temperature value;
the cross line model obtaining unit is connected with the coefficient obtaining unit, and determines cross line models of the boxes with different numbers at each preset temperature value according to original correction coefficients of the boxes with different numbers and screen correction coefficients of the boxes with different numbers at each preset temperature value through a cross line model determining strategy, wherein the cross line model determining strategy is coeffdelt=coef1/coef0, coef0 is the original correction coefficient in a cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coeffdelt is the cross line model corresponding to the preset temperature value.
8. The device for processing the thermal screen effect of the LED display screen according to claim 6, wherein the object model acquisition module comprises:
an interpolation model obtaining unit for determining a first reticle model A corresponding to a first target temperature value a of the box with different numbers and a second reticle model B corresponding to a second target temperature value b of the box with different numbers in a plurality of reticle models corresponding to the box with different numbers;
the target model acquisition unit is connected with the interpolation model acquisition unit, and determines a target reticle model ModelC=ModelB [ (c-a)/(b-a) ]+ModelA [1- (c-a)/(b-a) ] corresponding to the current temperature value c of the box with different numbers according to the current temperature value c, the first target temperature value a, the second target temperature value b, the first reticle model ModelA and the second reticle model ModelB of the box with different numbers.
9. A thermal screen effect processing system of an LED display screen, comprising the thermal screen effect processing device of the LED display screen of any one of claims 6-8, an LED display screen comprising a plurality of boxes, a firmware memory, and a temperature acquisition device;
each box body of the LED display screen is provided with a temperature acquisition device, and each temperature acquisition device is used for acquiring the current temperature value of the box body and sending the current temperature value to a heat screen effect processing device of the LED display screen;
the firmware memory is positioned in the transmitting equipment, the main control server or the broadcasting control server and is used for receiving and storing the plurality of preset temperature values and the cross line model of each box body under different preset temperature values;
the heat shield effect processing device of the LED display screen is respectively connected with the temperature acquisition equipment and the firmware memory, and is used for realizing the heat shield effect processing method of the LED display screen according to the current temperature value acquired by the temperature acquisition equipment, a plurality of preset temperature values stored in the firmware memory and cross line models of each box body under different preset temperature values.
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