CN114927091A - Heat shield effect processing method, device and system of LED display screen - Google Patents
Heat shield effect processing method, device and system of LED display screen Download PDFInfo
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- 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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Abstract
The invention discloses a method, a device and a system for processing a heat shield effect of an LED display screen, wherein the method comprises the following steps: acquiring a cross line model of a box body in the LED display screen at different preset temperature values; determining a target cross line model corresponding to the current temperature value of each box body according to the current temperature value of each box body, the first target temperature value, the second target temperature value, the first cross line model corresponding to the first target temperature value and the second cross line model corresponding to the second target temperature value; 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. Can obtain the target cross model that current temperature value corresponds through a plurality of default temperature value and the cross model that corresponds, rectify every box in the LED display screen, need not generate new correction coefficient model, the phenomenon of the black screen appears when having avoided issuing the correction model, has guaranteed correction effect and display effect.
Description
Technical Field
The invention relates to the technical field of LED display screen correction, in particular to a method, a device and a system for processing a heat shield effect of an LED display screen.
Background
In an LED display screen, the difference in screen display brightness caused by the non-uniform temperature distribution of the screen body is referred to as "cross line" in the industry.
In the prior art, the cross line phenomenon is corrected through the cross line model, however, because the temperature of the box body in the LED display screen changes in real time and corresponds to different cross line models at different temperatures, the screen can only store one set or a limited set of correction models, when the temperature of the box body in the screen changes, a new correction model needs to be generated again and issued to a receiving card in the LED display screen, and the black screen phenomenon of the LED display screen can be caused 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 the loss of the correction data is easily caused by operation errors.
Therefore, there is a need to find a new solution to solve the above problems.
Disclosure of Invention
In order to overcome the problems in the related art, the invention discloses a method, a device and a system for processing the heat shielding effect of an LED display screen.
According to a first aspect of the disclosed embodiments of the present invention, there is provided a method for processing a thermal shielding effect of an LED display screen, the method including:
acquiring a cross line model of a box body in the LED display screen at different preset temperature values;
acquiring the 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 value of the current temperature value of each box body in the plurality of preset temperature values, wherein the first target temperature value is smaller than the second target temperature value;
determining a target cross line model corresponding to the current temperature value of each box body according to the current temperature value of each box body, the first target temperature value, the second target temperature value, a first cross line model corresponding to the first target temperature value and a second cross line model corresponding to the second target temperature value;
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 cross line 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 body in the LED display screen;
acquiring original correction coefficients of the box bodies with different numbers in a cold screen state and screen correction coefficients of the box bodies with different numbers in each preset temperature value;
determining a cross line model of the box bodies with different numbers at each preset temperature value according to the original correction coefficients of the box bodies with different numbers and the screen correction coefficients of the box bodies with different numbers at each preset temperature value through a cross line model, wherein the cross line model determines that the strategy is coefdeltet 1/coef0, coef0 is the original correction coefficient in a cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coefdeltet is the cross line model corresponding to the preset temperature value.
Optionally, the obtaining a current temperature value of each box in the LED display screen includes:
acquiring current temperature values of the box bodies 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.
Optionally, the determining a first target temperature value and a second target temperature value that are closest to the value of the current temperature value of each tank in the plurality of preset temperature values includes:
dividing all preset temperature values smaller than the current temperature value into a first set and dividing all preset temperature values larger than or equal to the current temperature value into a second set according to the numerical value of the current temperature value;
selecting a preset temperature value with the largest value in the first set as a first target temperature value;
and selecting the preset temperature value with the minimum value in the second set as a second target temperature value.
Optionally, the determining, according to the current temperature value of each tank, the first target temperature value, the second target temperature value, the first cross line model corresponding to the first target temperature value, and the second cross line model corresponding to the second target temperature value, the target cross line model corresponding to the current temperature value of each tank includes:
determining a first cross line model A corresponding to a first target temperature value a of the box body with different numbers and a second cross line model B corresponding to a second target temperature value b of the box body with different numbers in a plurality of cross line models corresponding to the box bodies with different numbers;
according to the current temperature values c, the first target temperature value a, the second target temperature value b, the first cross-hair model A and the second cross-hair model B of boxes with different numbers, a target cross-hair model ModelC ═ model B [ (c-a)/(b-a) ] + model A [1- (c-a)/(b-a) ], corresponding to the current temperature values c of the boxes with different numbers is determined.
Optionally, the correcting the lamp points in the box body according to the target cross line model of each box body to eliminate the heat shield effect of the LED display screen includes:
acquiring original image data to be displayed of box bodies with different numbers in the LED display screen at the current temperature value;
determining the 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 bodies with different numbers to obtain the target brightness value of each lamp point in the box bodies with different numbers;
and acquiring target image data of the box bodies 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 shielding effect processing apparatus for an LED display panel, the apparatus comprising:
the cross line model acquisition module is used for acquiring cross line models of a 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 is used for acquiring the current temperature value of each box body in the LED display screen;
a target temperature value obtaining module connected with the current temperature value obtaining module, and 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 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 cross line model corresponding to the current temperature value of each box body according to the current temperature value of each box body, the first target temperature value, the second target temperature value, the first cross line model corresponding to the first target temperature value and the second cross line model corresponding to the second target temperature value;
and the heat shielding effect processing module is connected with the target model acquisition module and corrects the lamp points in the box bodies according to the target cross line model of each box body so as to eliminate the heat shielding effect of the LED display screen.
Optionally, the cross line 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 is 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;
and the cross line model acquisition unit is connected with the coefficient acquisition unit, and determines a cross line model of the box bodies with different numbers at each preset temperature value according to the original correction coefficients of the box bodies with different numbers and the screen correction coefficients of the box bodies with different numbers at each preset temperature value through a cross line model determination strategy, wherein the cross line model determination strategy is coefdelt 1/coef0, coef0 is the original correction coefficient in a cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coefdeltel is the cross line model corresponding to the preset temperature value.
Optionally, the target model obtaining module includes:
the interpolation model acquisition unit is used for determining a first cross line model A corresponding to a first target temperature value a of the box body with different numbers and a second cross line model B corresponding to a second target temperature value b of the box body with different numbers in a plurality of cross line models corresponding to the box bodies with different numbers;
and the target model obtaining unit is connected with the interpolation model obtaining unit, and determines a target cross line model ModelC ═ model B [ (c-a)/(b-a) ] + model A [1- (c-a)/(b-a) ], which corresponds to the current temperature values c of the boxes with different numbers, according to the current temperature values c, the first target temperature value a, the second target temperature value b, the first cross line model ModelA and the second cross line model ModelB of the boxes with different numbers.
According to a third aspect of the disclosed embodiment of the present invention, a heat shielding effect processing system of an LED display screen is provided, which includes a heat shielding effect processing apparatus of an LED display screen according to the second aspect of the disclosed embodiment of the present invention, an LED display screen including 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 shield effect processing device of the LED display screen;
the firmware memory is positioned in the sending equipment, the main control server or the broadcast 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 shielding 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 shielding effect processing method of the LED display screen in the first aspect of the disclosed embodiment of the invention according to the current temperature value acquired by the temperature acquisition equipment, a plurality of preset temperature values stored in the firmware memory and the cross curve model of each box body at different preset temperature values.
In summary, the present disclosure relates to a method, an apparatus, and a system for processing a thermal shielding effect of an LED display, where the method includes: acquiring a cross line model of a box body in the LED display screen at different preset temperature values; determining a target cross line model corresponding to the current temperature value of each box body according to the current temperature value of each box body, the first target temperature value, the second target temperature value, a first cross line model corresponding to the first target temperature value and a second cross line model corresponding to the second target temperature value; 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. The target cross-line model corresponding to the current temperature value can be obtained through a plurality of preset temperature values and corresponding cross-line models, so that the heat shield correction of each box body in the LED display screen is adaptive to the real-time changing temperature of the box body, a new correction coefficient model does not need to be generated when the temperature changes, the phenomenon that the LED display screen is blacked when the correction model is sent to a 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 the correction data cannot be lost.
In addition, only the cross line models corresponding to a plurality of preset temperature values are stored, and the 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, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a flow chart illustrating a method for managing thermal shielding effects of an LED display in accordance with one exemplary embodiment;
FIG. 2 is a graph showing the luminance of a red light spot as a function of temperature;
FIG. 3 is a flow chart of a reticle model determination method according to the one shown in FIG. 1;
FIG. 4 is a flow chart of a method of determining a target cross hair model according to the method shown in FIG. 1;
FIG. 5 is a block diagram of a thermal shield effect processing apparatus for an LED display panel according to an exemplary embodiment;
FIG. 6 is a block diagram of a reticle model acquisition module according to the embodiment shown in FIG. 5;
fig. 7 is a block diagram of a structure of an object obtaining module according to fig. 5.
Detailed Description
The following detailed description of the disclosed embodiments will be made in conjunction with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
FIG. 1 is a flowchart illustrating a thermal shielding effect processing method for an LED display screen according to an exemplary embodiment, the method comprising:
in step 101, a cross line 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 different, that is, the temperatures of different boxes are different. As the temperature increases, the brightness of the lamp points in the LED display screen gradually decreases in an approximately linear manner (commonly referred to as a heat shield effect), and the red lamp point (R lamp point) is the most serious of the R, G, B lamp points. Fig. 2 is a graph showing the luminance of a red lamp point as a function of temperature, and as can be seen from fig. 2, the luminance of the R lamp point decreases with increasing temperature and shows a nearly linear law. Therefore, the heat shielding effect affects the display of the picture to be played by the LED display screen, the processing of the heat shielding effect of the LED display screen caused by temperature change is very important, and different boxes can correspond to different processing modes due to different temperatures (namely, different correction coefficients in processing models corresponding to different boxes are different).
In the embodiment of the invention, the heat shield effect caused by the temperature change is processed through the cross line model, and aiming at the problems that the temperatures of different boxes in the LED display screen are different and the temperature on the box can change at any time along with the use process of the LED display screen, the cross line model corresponding to a plurality of preset temperature values is obtained in advance, and the cross line model obtained in advance is adjusted according to the current temperature value of each box, so that a target cross line model of the box at the current temperature value is obtained, and the brightness value of a lamp point on the box is corrected to eliminate the influence of the heat shield effect.
When cross-line models at 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 at different preset temperature values are obtained for each box body in the LED display screen.
Specifically, fig. 3 is a flowchart of a reticle model determining 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 a general case, specifications and models (i.e., box structures) of boxes in the same LED display screen are the same, so after the cross wire model of the box in the LED display screen at each preset temperature value is obtained in step 101, the cross wire model at each preset temperature value can be directly used for subsequent target cross wire model determination and thermal shielding effect processing of other boxes in the LED display screen (i.e., in the same LED display screen, it is not necessary to distinguish whether the box subjected to thermal shielding effect processing and the box obtained the cross wire model at the preset temperature value are the same box).
However, in an actual application process, the same LED display screen may also include boxes of different specifications and types, and at this time, it is necessary to distinguish whether the box subjected to the heat shielding effect processing and the box of the cross line model obtained at the preset temperature value are boxes of the same specification and type. It can be understood that, after the cross line models corresponding to each box body at different preset temperature values are obtained in steps 1011 to 1013 in the disclosed embodiment of the present invention, the specification and model (i.e., the box body structure) of each box body need to be determined, the cross line models at the different preset temperature values are classified according to the box body structure, and only the preset temperature values and the cross line models corresponding to several different box body structures are stored. Therefore, in the process of subsequently processing the heat shield effect, for the current temperature value of a certain box body, cross-line models of box bodies with the same specification and the same model at different temperature values are required to be obtained according to the box body structure of the box body, and a target cross-line model of the box body at the current temperature value is called. Therefore, in order to distinguish the boxes with different specifications and models in the LED display screen, the boxes are distinguished by acquiring the serial number of each box in the embodiment of the invention. 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 reticle models under different preset temperature values corresponding to the two box structures need to be saved. In the subsequent step, if the box body with the number 009 needs to be subjected to heat shielding effect processing, only different preset temperature values and reticle models under the corresponding box body structure need to be found according to the number of the box body, in the embodiment disclosed in the invention, the reticle models corresponding to the different preset temperature values corresponding to the first box body structure need to be obtained for the box body with the number 009, and the target reticle model is obtained by referring to the current temperature value of the box body with the number 009. Therefore, different reticle models corresponding to each box body structure in the LED display screen are always kept to process the heat shielding effect of each box body by using the reticle models of the same box body structure, and the problem that correction results are deviated due to difference between correction models caused by different models and specifications (different structures) 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 may be selected according to practical application scenarios, and are not limited by the embodiment disclosed in 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, a cross model of the box with the different number at each preset temperature value is determined by a cross model determination strategy according to the original correction coefficient of the box with the different number and the screen correction coefficient of the box with the different number at each preset temperature value.
The cross line model determines that the strategy is coefdeltt 1/coef0, coef0 is an original correction coefficient in a cold screen state, coef1 is a screen correction coefficient at the preset temperature value, and coefdelt is the cross line model corresponding to the preset temperature value.
For example, for the boxes with different numbers, cross line models of the boxes at different preset temperature values are respectively obtained, where the cross line models are obtained according to the original correction coefficients in the cold-shielding state and the screen correction coefficients in the hot-shielding state, and it can be understood that the temperature value in the cold-shielding state is the temperature value at room temperature.
In addition, after cross line models of boxes with different numbers at each preset temperature value are obtained and the box structures are determined, the cross line models at each preset temperature value corresponding to different box structures are stored in firmware memories such as sending equipment, a main control server or a broadcast control server, and therefore the stored preset temperature values and the cross line models are called for processing in the subsequent process of carrying out heat shielding effect processing on the boxes with the same box structure.
For example, the reticle models of the boxes with different box structures at each preset temperature value can be stored as a data set, and the data set is named according to the specification and model of the box. Therefore, in the subsequent heat shield effect processing process, if the current temperature value of a certain box body is obtained, the corresponding box body structure is determined according to the serial number of the box body, the data set corresponding to the box body structure is called from the sending equipment, the main control server or the broadcasting control server, and the target cross line model under the current temperature value of the box body is obtained according to the preset temperature value and the cross line model in the data packet.
In step 102, a current temperature value of each box in the LED display screen is obtained.
Specifically, the current temperature values of the box bodies with different numbers are collected 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.
In an exemplary embodiment of the present disclosure, the current temperature value obtained by the temperature acquisition device is obtained, so as to determine the target cross-line model of the tank according to the current temperature value.
In step 103, 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 the plurality of preset temperature values.
Wherein the first target temperature value is less than the second target temperature value.
Specifically, all preset temperature values smaller than the current temperature value are divided into a first set according to the value of the current temperature value, 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 value in the first set as a first target temperature value; and selecting the preset temperature value with the minimum 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 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, such as 20 ℃, 30 ℃, 40 ℃, 50 ℃, 60 ℃, 70 ℃, and so on, so that when the value of the current temperature value of the box body is between the values of 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 with a smaller value is the first target temperature value. For example, if the current temperature value is 57 ℃, then the first target temperature value may be determined to be 50 ℃ and the second target temperature value may be 60 ℃.
It can be understood that, when the upper computer software determines that the value of the current temperature value is between the values of the two preset temperature values, the current temperature value may be compared with each preset temperature value, and all the preset temperature values having values smaller than the current temperature value are classified into a first set, for example, 20 ℃, 30 ℃, 40 ℃ and 50 ℃ in the above example are all smaller than the current temperature value 57 ℃, and therefore are in the first set, and all the preset temperature values having values larger than the current temperature value are classified into a second set, for example, the values of 60 ℃ and 70 ℃ in the above example are both larger than the current temperature value 57 ℃, and therefore are in the second set. Thus, the maximum value of 50 ℃ is selected from the first set as the first target temperature value, and the minimum value of 60 ℃ is selected from the second set as the second target temperature value.
In step 104, a target cross-hair model corresponding to the current temperature value of each box body is determined according to the current temperature value of each box body, the first target temperature value, the second target temperature value, the first cross-hair model corresponding to the first target temperature value and the second cross-hair model corresponding to the second target temperature value.
Illustratively, specifically as shown in fig. 4, fig. 4 is a flowchart of a method for determining a target cross line model shown in fig. 1, where step 104 includes:
in step 1041, among a plurality of cross-hair models corresponding to boxes of different numbers, a first cross-hair model modelA corresponding to a first target temperature value a of the boxes of different numbers and a second cross-hair model modelB corresponding to a second target temperature value b of the boxes of different numbers are determined.
In step 1042, a target cross model ModelC corresponding to the current temperature values c of the boxes with different numbers is determined according to the current temperature values c of the boxes with different numbers, the first target temperature value a, the second target temperature value b, the first cross model a and the second cross model b.
Wherein the target cross line model ModelC ═ modelB [ (c-a)/(b-a) ] + modelA [1- (c-a)/(b-a) ].
In an example, after a first target temperature value and a second target temperature value corresponding to a current temperature value of the box body are determined, a first cross line model corresponding to the first target temperature value and a second cross line model corresponding to the second temperature value are obtained, so that the target cross line model corresponding to the current temperature value can be determined through an interpolation method according to the first target temperature value, the second target temperature value, the current temperature value, the first cross line model and the second cross line model.
Therefore, only a plurality of cross models under preset temperature values need to be stored in the sending equipment, the master control server or the broadcast control server, and the target cross model under each current temperature value can be determined through an interpolation method without occupying more hardware memory resources. In addition, the correction model does not need to be regenerated when the temperature value of the box body changes, only interpolation calculation needs to be carried out on the stored cross line model, and after the target cross line model is generated in the embodiment of the invention, the box body is directly corrected in sending equipment (hot screen effect processing), the correction model does not need to be issued to the receiving card, so that the problem that when the correction model is regenerated and issued to the receiving card corresponding to the box body, a screen is possibly blacked, and the display effect is influenced is solved.
In step 105, the lamp points in each box are corrected according to the target cross-line model of the box so as to eliminate the heat shield effect of the LED display screen.
Specifically, under the current temperature value, original image data to be displayed of boxes with different numbers in the LED display screen are obtained; determining the 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 bodies with different numbers to obtain the target brightness value of each lamp point in the box bodies with different numbers; and acquiring target image data of the box bodies 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 cross-hair model of each box is obtained, the original image data to be displayed for the box (the original image data corresponding to each box is obtained by dividing the screen content corresponding to the large screen) may be corrected in a manner of using the original image data and the target cross-hair model as the target image data. It can be understood that, in the above-mentioned modification process, the original brightness value of each lamp point in the box is determined according to the original image data, and the brightness value of each lamp point is corrected through the target cross line 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 heat shielding effect of the box and completing the heat shielding effect processing process of the box. And after each box body is subjected to heat shielding effect treatment, the whole heat shielding effect treatment process of the LED display screen is completed.
Fig. 5 is a block diagram illustrating a thermal shielding effect processing apparatus for an LED display panel according to an exemplary embodiment, where, as shown in fig. 5, the apparatus 500 includes:
a cross model obtaining module 510, obtaining cross models of the box body in the LED display screen at different preset temperature values;
a current temperature value obtaining module 520, connected to the reticle model obtaining module 510, for obtaining a current temperature value of each box in the LED display screen;
a target temperature value obtaining module 530 connected to the current temperature value obtaining module 520, and determining a first target temperature value and a second target temperature value which are closest to the current temperature value of each tank among the plurality of preset temperature values, wherein the first target temperature value is smaller than the second target temperature value;
a target model obtaining module 540, connected to the target temperature value obtaining module 530, for determining a target cross-hair model corresponding to the current temperature value of each box according to the current temperature value of each box, the first target temperature value, the second target temperature value, the first cross-hair model corresponding to the first target temperature value, and the second cross-hair model corresponding to the second target temperature value;
and the heat shielding effect processing module 550 is connected to the target model obtaining module 540, 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 shielding effect of the LED display screen.
Fig. 6 is a block diagram illustrating a structure of a reticle model obtaining module shown in fig. 5, and as shown in fig. 6, the reticle model obtaining module 510 includes:
the temperature value acquisition unit 511 is used for determining a plurality of preset temperature values and the number of each box body 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 a cold screen state and screen correction coefficients of the boxes with different numbers in each preset temperature value;
and a cross line model obtaining unit 513, connected to the coefficient obtaining unit 512, determining a cross line model of the box with different numbers at each preset temperature value according to the original correction coefficient of the box with different numbers and the screen correction coefficient of the box with different numbers at each preset temperature value by using a cross line model determination strategy, where the cross line model determination strategy is coefdelt 1/coef0, coef0 is the original correction coefficient in a cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coefdeltelteltelteltelteltelteltel is the cross line model corresponding to the preset temperature value.
Fig. 7 is a block diagram illustrating a structure of an object obtaining module according to fig. 5, and as shown in fig. 7, the object model obtaining module 540 includes:
an interpolation model obtaining unit 541, which determines a first cross line model a corresponding to a first target temperature value a of a box with different numbers and a second cross line model b corresponding to a second target temperature value b of the box with different numbers in a plurality of cross line models corresponding to the box with different numbers;
and a target model obtaining unit 542 connected to the interpolation model obtaining unit 541, and configured to determine, according to the current temperature values c, the first target temperature values a, the second target temperature values b, the first cross line model modelA, and the second cross line model modelB of boxes with different numbers, a target cross line model (ModelC) ═ modelB [ (c-a)/(b-a) ] + modelA [1- (c-a)/(b-a) ], which corresponds to the current temperature values c of the boxes with different numbers.
The invention also provides a heat shielding effect processing system of the LED display screen, which comprises a heat shielding effect processing device of the LED display screen, the LED display screen comprising a plurality of box bodies, a firmware memory and temperature acquisition equipment;
each box body of the LED display screen is respectively 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 the heat shield effect processing device of the LED display screen;
the firmware memory is positioned in the sending 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 shielding 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 shielding 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 the cross line model of each box body under different preset temperature values.
In summary, the present disclosure relates to a method, an apparatus, and a system for processing a thermal shielding effect of an LED display, where the method includes: acquiring a cross line model of a box body in the LED display screen at different preset temperature values; determining a target cross line model corresponding to the current temperature value of each box body according to the current temperature value of each box body, the first target temperature value, the second target temperature value, a first cross line model corresponding to the first target temperature value and a second cross line model corresponding to the second target temperature value; 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. The target cross line model corresponding to the current temperature value can be obtained through a plurality of preset temperature values and corresponding cross line models, so that the heat shield correction of each box body in the LED display screen is adaptive to the real-time changing temperature of the box body, a new correction coefficient model does not need to be generated when the temperature changes, the phenomenon that the LED display screen is blacked when the correction model is issued to a 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 the correction data cannot be lost.
In addition, only the cross line models corresponding to a plurality of preset temperature values are stored, and the occupation of hardware memory resources can be reduced.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A method for processing heat shield effect of an LED display screen is characterized by comprising the following steps:
acquiring a cross line model of a box body in the LED display screen at different preset temperature values;
acquiring the 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 plurality of preset temperature values, wherein the first target temperature value is smaller than the second target temperature value;
determining a target cross line model corresponding to the current temperature value of each box body according to the current temperature value of each box body, the first target temperature value, the second target temperature value, the first cross line model corresponding to the first target temperature value and the second cross line model corresponding to the second target temperature value;
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.
2. The method for processing the heat shielding effect of the LED display screen according to claim 1, wherein the obtaining of the cross curve 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 serial number of each box body in the LED display screen;
acquiring original correction coefficients of the box bodies with different numbers in a cold screen state and screen correction coefficients of the box bodies with different numbers in each preset temperature value;
determining a cross line model of the box bodies with different numbers at each preset temperature value according to the original correction coefficients of the box bodies with different numbers and the screen correction coefficients of the box bodies with different numbers at each preset temperature value through a cross line model, wherein the cross line model determines that the strategy is coefdeltet 1/coef0, coef0 is the original correction coefficient in a cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coefdeltet is the cross line model corresponding to the preset temperature value.
3. The method for processing the heat shielding effect of the LED display screen according to claim 2, wherein the obtaining of the current temperature value of each box body in the LED display screen comprises:
acquiring current temperature values of the box bodies 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.
4. The method for processing the thermal shielding effect of the LED display screen according to claim 2, wherein the 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 plurality of preset temperature values comprises:
dividing all preset temperature values smaller than the current temperature value into a first set and dividing all preset temperature values larger than or equal to the current temperature value into a second set according to the numerical value of the current temperature value;
selecting a preset temperature value with the largest value in the first set as a first target temperature value;
and selecting the preset temperature value with the minimum value in the second set as a second target temperature value.
5. The method for processing the thermal shielding effect of the LED display screen according to claim 4, wherein the determining a target cross-hair model corresponding to the current temperature value of each box according to the current temperature value of each box, the first target temperature value, the second target temperature value, the first cross-hair model corresponding to the first target temperature value and the second cross-hair model corresponding to the second target temperature value comprises:
determining a first cross line model A corresponding to a first target temperature value a of the box body with different numbers and a second cross line model B corresponding to a second target temperature value b of the box body with different numbers in a plurality of cross line models corresponding to the box bodies with different numbers;
according to the current temperature values c, the first target temperature value a, the second target temperature value b, the first cross-hair model A and the second cross-hair model B of boxes with different numbers, a target cross-hair model ModelC ═ model B [ (c-a)/(b-a) ] + model A [1- (c-a)/(b-a) ], corresponding to the current temperature values c of the boxes with different numbers is determined.
6. The method for processing the heat shielding effect of the LED display screen according to claim 2, wherein the correcting the lamp points in the boxes according to the target cross-line model of each box to eliminate the heat shielding effect of the LED display screen comprises:
acquiring original image data to be displayed of box bodies with different numbers in the LED display screen at the current temperature value;
determining the 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 bodies with different numbers to obtain the target brightness value of each lamp point in the box bodies with different numbers;
and acquiring target image data of the box bodies 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.
7. A heat shield effect processing device of an LED display screen is characterized by 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 is used for acquiring the current temperature value of each box body in the LED display screen;
a target temperature value obtaining module connected with the current temperature value obtaining module, and 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 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 cross line model corresponding to the current temperature value of each box body according to the current temperature value of each box body, the first target temperature value, the second target temperature value, the first cross line model corresponding to the first target temperature value and the second cross line model corresponding to the second target temperature value;
and the heat shielding effect processing module is connected with the target model acquisition module and corrects the lamp points in the box bodies according to the target cross line model of each box body so as to eliminate the heat shielding effect of the LED display screen.
8. The device for processing the heat shielding effect of the LED display screen according to claim 7, wherein the cross-shaped line model obtaining 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 is 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;
and the cross line model acquisition unit is connected with the coefficient acquisition unit, and determines a cross line model of the box bodies with different numbers at each preset temperature value according to the original correction coefficient of the box bodies with different numbers and the screen correction coefficient of the box bodies with different numbers at each preset temperature value through a cross line model determination strategy, wherein the cross line model determination strategy is coefdelt 1/coef0, coef0 is the original correction coefficient in a cold screen state, coef1 is the screen correction coefficient at the preset temperature value, and coefdelteltel is the cross line model corresponding to the preset temperature value.
9. The apparatus for processing thermal shielding effect of LED display screen according to claim 7, wherein said target model obtaining module comprises:
the interpolation model acquisition unit is used for determining a first cross line model A corresponding to a first target temperature value a of the box body with different numbers and a second cross line model B corresponding to a second target temperature value b of the box body with different numbers in a plurality of cross line models corresponding to the box bodies with different numbers;
and the target model obtaining unit is connected with the interpolation model obtaining unit and determines a target cross line model ModelC ═ modelB [ (c-a)/(b-a) ] + modelA [1- (c-a)/(b-a) ], which corresponds to the current temperature values c of the boxes with different numbers according to the current temperature values c, the first target temperature values a, the second target temperature values b, the first cross line model ModelA and the second cross line model ModelB of the boxes with different numbers.
10. A heat shielding effect processing system of an LED display screen is characterized by comprising the heat shielding effect processing device of the LED display screen, the LED display screen comprising a plurality of boxes, a firmware memory and a temperature acquisition device, wherein the boxes are arranged in the boxes;
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 shield effect processing device of the LED display screen;
the firmware memory is positioned in the sending equipment, the main control server or the broadcast 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 shielding 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 shielding effect processing method of the LED display screen in any one of claims 1 to 6 according to the current temperature value acquired by the temperature acquisition equipment, a plurality of preset temperature values stored in the firmware memory and a cross line model of each box body at different preset temperature values.
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