CN116863868B - Display control method, device and display system of large-size LED display screen for curtain wall - Google Patents
Display control method, device and display system of large-size LED display screen for curtain wall Download PDFInfo
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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
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
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Abstract
The invention relates to the technical field of screen display, in particular to a display control method, a device and a display system of a large-size LED display screen for curtain walls, wherein the method comprises the following steps: s1, acquiring crowd distribution conditions around an LED display screen; s2, determining at least a part of areas from the LED display screen as target display areas according to the crowd distribution situation around the LED display screen; s3, determining target resolution of each target display area for display according to crowd distribution conditions around the display screen; and S4, controlling each target display area of the LED display screen to display respectively with corresponding target resolution. The invention can reduce the energy consumption of the LED display screen and prolong the service life of the LED display screen.
Description
Technical Field
The invention relates to the technical field of screen display, in particular to a display control method, a display control device and a display system of a large-size LED display screen for curtain walls.
Background
At present, an LED display screen is formed by utilizing LED point light sources consisting of LED lamp beads according to a matrix arrangement mode. Each LED point light source may be a pixel of an LED display screen. The desired image is displayed by controlling the light emission of these LED point light sources as pixels of the LED display screen. Such displays are often mounted on the exterior walls of large buildings, which provide the exterior walls of the building with a display function. At present, the whole area of the LED display screen is usually used for displaying, and because the size of the LED display screen is large, if all the areas are displayed, the whole area of the LED display screen has high energy consumption and large heating value, and the service life of the LED lamp beads can be seriously influenced.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a display control method, a device and a display system of a large-size LED display screen for curtain walls, which are used for solving the technical problems of higher energy consumption and short service life of LED lamp beads of the existing LED display screen.
The technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a display control method for a large-sized LED display screen for a curtain wall, where the LED display screen includes a plurality of LED lamp beads, and the method includes the following steps:
s1, acquiring crowd distribution conditions around an LED display screen;
s2, determining at least a part of areas from the LED display screen as target display areas according to the crowd distribution situation around the LED display screen;
s3, determining target resolution of each target display area for display according to crowd distribution conditions around the display screen;
and S4, controlling each target display area of the LED display screen to display respectively with corresponding target resolution.
Preferably, the step S1 of obtaining the crowd distribution situation around the LED display screen further comprises the following steps:
s11, acquiring images of people around the LED display screen as initial images;
s12, identifying a human body target in the initial image;
s13, obtaining the distance between each human body target;
S14, dividing the human body targets into a plurality of groups of people through a clustering algorithm according to the distance between the human body targets;
s2, determining at least a part of area from the LED display screen as a target display area according to the crowd distribution situation around the LED display screen further comprises the following steps:
s21, acquiring the number of human body targets of each crowd;
s22, acquiring a threshold value of the target quantity of the human body;
s23, screening out the crowd with the number of human targets larger than the threshold value of the number of human targets from all the crowd as target crowd;
s24, obtaining the central position of each target crowd;
and S25, determining target display areas corresponding to all target crowds according to the relative position relation between the central positions of all target crowds and the LED display screen.
Preferably, the step S25 of determining the target display area corresponding to each target crowd according to the relative position relation between the central position of each target crowd and the LED display screen further comprises the following steps:
s251, determining the central position of a target display area corresponding to each target crowd as a reference central position according to the central position of each target crowd;
s252, obtaining the distance between the central position of each target crowd and the corresponding reference central position;
S253, determining the size of a target display area according to the distance between the central position of each target crowd and the corresponding reference central position;
and S254, determining the target display areas corresponding to all the target groups according to the reference center positions of the target display areas and the sizes of the corresponding target display areas.
Preferably, the step S25 of determining the target display area corresponding to each target crowd according to the relative position relation between the central position of each target crowd and the LED display screen further comprises the following steps:
s255, judging whether each target display area is overlapped or not;
s256, if not, keeping the central position and the size of each current target pixel area unchanged;
s257, if yes, obtaining the area of the overlapped area and the duty ratio k of the total area of the target display area with the overlapped area;
if the area ratio is greater than or equal to the allowable value, synthesizing the target wanted display area with the overlapped area into a target display area, wherein the size Ac=Ab/k of the synthesized target display area, ab is the size of the target pixel area with the largest size in each target display area with the overlapped area before synthesis, and the center position of the synthesized target display area is the centroid position of all the target display areas participating in synthesis;
And S259, if the area ratio is smaller than the allowable value, moving each target wanted display area with the overlapped area to a position without overlapping in a direction away from each other.
Preferably, the step S3 of determining the target resolution of each target display area for display according to the crowd distribution situation around the display screen further comprises the following steps:
s31, acquiring the center position of each target display area;
s32, obtaining the distance between the central position of each target crowd and the central position of the corresponding target display area;
and S33, determining target resolution of each target display area for display according to the distance between the central position of each target crowd and the central position of the corresponding target display area.
Preferably, the display screen includes a plurality of sub display screens, at least two adjacent sub display screens are located on different planes, one of the two adjacent non-coplanar sub display screens is set as a sub first display screen, the other is a second sub display screen, and the display control method further includes the following steps:
s501, selecting a pixel from a first sub-display screen as a target pixel;
s502, selecting all light-emitting units capable of irradiating the target pixel position from the light-emitting units of the second sub-display screen as target light-emitting units;
S503, acquiring illumination intensity distribution of each target light-emitting unit along the angular position;
s504, acquiring the angular positions between the target pixel and each target light-emitting unit;
s505, according to the illumination intensity distribution of each target light-emitting unit along the angular position and the angular position between the target pixel and each target light-emitting unit, acquiring the illumination intensity of each target light-emitting unit irradiated to the target pixel;
s506 calculating an illumination intensity influence value Qr of the target pixel from the illumination intensities of the respective target light emitting units to the target pixel, wherein qr=q 1 +q 2 +…+q n-1 +q n Number of n target light emitting units, q i The illumination intensity of the ith target light emitting unit to the target pixel is set, wherein i is a positive integer less than or equal to n;
s507, determining an illumination intensity adjustment quantity Qr of the target pixel according to the illumination intensity influence value, wherein qc= -Qr;
s508, adjusting the illumination intensity of the light-emitting units of the first sub-display screen corresponding to the target pixels according to the illumination intensity adjustment quantity;
s509, repeating steps S501 to S508 until the adjustment of the full illumination intensity is performed for all pixels of the first sub-display.
Preferably, in the step S3, determining the target resolution of each target display area for display according to the crowd distribution situation around the display screen further includes the following steps:
S34, acquiring the environment real-time temperature of the area where the LED lamp beads of each target display area are located;
s35, acquiring a temperature limit value of the LED lamp bead;
s36, judging whether the ambient real-time temperature of the LED lamp beads is greater than the temperature limit value of the LED lamp beads or not;
s37, if not, keeping the target resolution of the current target area unchanged;
s38: and if so, adjusting the target resolution of each target display area according to the real-time temperature of the LED lamp beads of each target display area.
Preferably, after the step S4 of controlling each target display area of the LED display screen to be displayed with the corresponding target resolution, the method further comprises the following steps:
s5, obtaining the ambient illumination intensity of each target display area;
s6, adjusting the brightness of the LED lamp beads of each target display area according to the ambient illumination intensity of each target area;
s7, acquiring the real-time brightness of each LED lamp bead after brightness adjustment;
and S8, adjusting the light distribution curve of each LED lamp bead according to the real-time brightness of each LED lamp bead.
In a second aspect, the present invention further provides a display control device for a large-size LED display screen for a curtain wall, where the LED display screen includes a plurality of LED lamp beads, and the device includes:
the crowd distribution situation acquisition module is used for acquiring crowd distribution situations around the LED display screen;
The target display area determining module is used for determining at least one part of area from the LED display screen as a target display area according to the crowd distribution situation around the LED display screen;
the target resolution determining module is used for determining target resolution of each target display area for display according to crowd distribution conditions around the display screen;
and the display control module is used for controlling each target display area of the LED display screen to display respectively with corresponding target resolution.
The invention also provides a display system comprising a control circuit and a plurality of LED light beads, the control circuit being connected to the LED light beads, the control circuit comprising at least one processor, at least one memory and computer program instructions stored in the memory, which when executed by the processor, implement the method of the first aspect.
The beneficial effects are that: according to the display control method, the device and the display system of the large-size LED display screen for the curtain wall, the target display area corresponding to the crowd distribution situation is selected in the LED display screen for display according to the crowd distribution situation, so that people in different positions can watch display contents conveniently, the area outside the target display area on the LED display screen can not work, the energy consumption of the large-size LED display screen is reduced, the temperature of the LED display screen is reduced, and the service life of LED lamp beads is prolonged. According to the invention, the resolution ratio of the target display area in display is adjusted according to the distance between the target crowd and the target area, so that people at different positions can watch clear images, the LED lamp bead resources arranged on the display screen can be reasonably utilized, the energy consumption of the display screen can be reduced, the temperature of the display screen is reduced, and the service life of the LED lamp beads is prolonged.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described, and it is within the scope of the present invention to obtain other drawings according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a display control method of a large-size LED display screen for a curtain wall;
FIG. 2 is a schematic diagram of a target display area according to the present invention;
FIG. 3 is a flow chart of a method for obtaining crowd distribution according to the present invention;
FIG. 4 is a flow chart of a method for determining a target display area according to the present invention;
FIG. 5 is a flow chart of a method for determining a target display area according to a crowd center position according to the invention;
FIG. 6 is a flow chart of a method for adjusting resolution of a target display area according to crowd distribution in the present invention;
FIG. 7 is a flow chart of a method for adjusting resolution of a target display area according to ambient temperature according to the present invention;
FIG. 8 is a flow chart of a method for adjusting the brightness of LED beads according to the ambient light intensity according to the present invention;
FIG. 9 is a flow chart of a method for adjusting the light distribution curve of an LED lamp bead according to the brightness adjustment of the LED lamp bead;
FIG. 10 is a schematic diagram of a large-size LED display screen for a curtain wall formed by a plurality of non-coplanar sub-display screen structures;
FIG. 11 is a schematic view of an LED point light source according to the present application;
FIG. 12 is a schematic view of a structure of a lens-bearing LED point light source according to the present application;
FIG. 13 is a schematic view of a structure of the present application for installing point light sources using profiles;
FIG. 14 is a schematic view of a point light source mounting structure using a bottom card according to the present application;
FIG. 15 is a schematic view of the construction of the present application for mounting point light sources using bottom clips and wires;
FIG. 16 is a schematic view of a grid arrangement of point light sources according to the present application;
fig. 17 is a schematic diagram of the present application for controlling each point light source in an LED display using data lines.
Parts and numbers in the figure:
point light source 1, bottom card 2, steel wire 3, installation face 4, installation section bar 5, lens 6, data line 7, LED display screen 8, first sub-display screen 91, second sub-display screen 92, LED lamp pearl 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. If not conflicting, the embodiments of the present application and the features of the embodiments may be combined with each other, which are all within the protection scope of the present application.
Example 1
As shown in fig. 1, the present embodiment provides a display control method for a large-sized LED display screen 8 for a curtain wall, where the LED display screen 8 includes a plurality of LED lamp beads 10, and the method includes the following steps:
s1, acquiring crowd distribution conditions around an LED display screen 8;
for a large and small LED display 8 mounted on a building exterior wall, the population it views tends to be distributed in different locations. The position and angle of each crowd from the LED display screen 8 are different. In the step, images around the LED display screen 8 can be shot through the wide-angle camera, and the crowd distribution situation around the LED display screen 8 is obtained through analyzing and processing the shot images.
S2, determining at least a part of areas from the LED display screen 8 as target display areas according to the crowd distribution situation around the LED display screen 8;
the number of the target display areas may be 1 or more. The specific number may be determined based on the distribution of people around the LED display 8. Wherein the determined target display area is a partial area of the LED display screen 8. The area outside the target display area does not work, so that the LED lamp beads 10 outside the target display area cannot be lightened, the energy consumption of the large-sized LED display screen 8 can be reduced, the temperature of the LED display screen 8 is reduced, and the service life of the LED lamp beads 10 can be prolonged.
S3, determining target resolution of each target display area for display according to crowd distribution conditions around the display screen;
as shown in fig. 2, P1, P2, and P3 in fig. 2 represent 3 people distributed around the LED display 8, and D1, D2, and D3 represent target display areas corresponding to the 3 people, respectively. Because the crowd is distributed in different relative positions with each target display area, the distances of the other corresponding display areas are also different, and therefore, according to the crowd distribution situation, different resolutions are adopted for different display areas, and each target display area can display to the corresponding target crowd with the most suitable resolution. By adopting the mode, the requirements of spectators on watching can be met, energy sources can be saved, the temperature of the LED display screen 8 is reduced, and the loss of the LED lamp beads 10 is reduced.
And S4, controlling each target display area of the LED display screen 8 to display respectively with corresponding target resolution.
The step displays according to the target display area and the target resolution selected in the previous step.
As an alternative but advantageous implementation, as shown in fig. 1, the step S1 of obtaining the crowd distribution situation around the LED display 8 further includes the following steps:
S11, acquiring images of people around the LED display screen 8 as initial images;
specifically, a tele camera can be used to shoot the surrounding environment of the LED display screen 8 to obtain an initial image including surrounding people.
S12, identifying a human body target in the initial image;
the human body target in the image can be identified through a deep learning algorithm, and the identified human body target can be marked by a rectangular human body target frame.
S13, obtaining the distance between each human body target;
when the method is implemented, the center positions of the human body target frames can be acquired first, and then the distance between the human body targets is calculated through the distance between the center positions of the human body target frames.
S14, dividing the human body targets into a plurality of groups according to the distance between the human body targets through a clustering algorithm.
And taking the distance between each human body target as the distance between the data points, calculating the distance between each data point through a clustering algorithm to obtain a plurality of data clusters, wherein the human body targets corresponding to the data points of the same data cluster belong to the same crowd. Wherein the clustering algorithm may employ a density clustering algorithm.
As an alternative but advantageous implementation, as shown in fig. 2, the step S2 of determining at least a part of the area from the LED display screen 8 as the target display area according to the crowd distribution situation around the LED display screen 8 further includes the following steps:
S21, acquiring the number of human body targets of each crowd;
s22, acquiring a threshold value of the target quantity of the human body;
because of the limited area of the LED display 8, it is not desirable to have a customized display for each group of people. In this embodiment, the customized display is only performed for a large number of people. For this purpose, a quantity threshold is set for screening the population with a large number of people. Wherein the number threshold may be set empirically.
S23, screening out the crowd with the number of human targets larger than the threshold value of the number of human targets from all the crowd as target crowd;
the step screens out the crowd with more people as the target crowd through the threshold value of the target quantity of human bodies, and then performs customized display on the screened target crowd.
S24, obtaining the central position of each target crowd;
the center position of the target crowd is the average value of the target positions of all human bodies in the crowd.
And S25, determining target display areas corresponding to all target crowds according to the relative position relation between the central positions of all target crowds and the LED display screen 8.
The step selects the target display area according to the central position of each target crowd, so that the position and the size of the target display area are suitable for the audience of the target crowd to watch.
As shown in fig. 3, in this embodiment, as an alternative but advantageous implementation manner, the step S25 of determining the target display area corresponding to each target crowd according to the relative positional relationship between the central position of each target crowd and the LED display screen 8 further includes the following steps:
s251, determining the central position of a target display area corresponding to each target crowd as a reference central position according to the central position of each target crowd;
when the method is implemented, a vertical line can be drawn to the display screen by taking the central position of the target crowd as a starting point, and the foot-hanging position is the reference central position of the target crowd. If the vertical line is outside the display screen, the position closest to the center position of the target crowd on the LED display screen 8 is taken as the reference center position.
S252, obtaining the distance between the central position of each target crowd and the corresponding reference central position;
s253, determining the size of a target display area according to the distance between the central position of each target crowd and the corresponding reference central position;
the size of the viewing area is adapted to give the viewer an optimal viewing experience due to the limited field of view of the eyes. Since scenes of the same size are at different distances from the human eye, the size in the human eye is also different. And determining the size of the target display area according to the distance between the central position of each target crowd and the corresponding reference central position. This allows the target display area to be presented in the appropriate size in the eyes of the target population regardless of how far or near the target population is from the target display area. As an alternative but advantageous embodiment, the length L of the diagonal of the target display area in this example is positively correlated with the distance S between the central position of the respective target crowd and the corresponding reference central position. The size of the suitable target area at each distance can be determined experimentally.
And S254, determining the target display areas corresponding to all the target groups according to the reference center positions of the target display areas and the sizes of the corresponding target display areas.
The reference center position is firstly taken as the center position of the target display area, and the range of the target display area is determined on the display screen according to the size of the target display area. And if the range of the target display area is completely positioned on the display screen, determining the target display area as a target display area corresponding to the target crowd. If a part of the range of the target display area is positioned outside the display screen, the target display area is moved towards the direction approaching to the center of the display screen, the range of the target display area is nearest to the reference center position, and the center position of the target display area in the display screen can be completely positioned as the new reference center position of the target display screen. In this way, a display area of a suitable size can be seen on the basis of the complete display content being made visible to the audience of the respective target population.
If the two divided people are located at a relatively close position, the target display areas determined according to the method may overlap, for which in this embodiment, the step S25 of determining the target display areas corresponding to the respective target people according to the relative positional relationship between the central position of the respective target people and the LED display screen 8 further includes the following steps:
S255, judging whether each target display area is overlapped or not;
s256, if not, keeping the central position and the size of each current target pixel area unchanged;
if no overlap exists between the target areas, the current division of the target display areas is reasonable, and adjustment is not needed.
S257, if yes, obtaining the area of the overlapped area and the duty ratio k of the total area of the target display area with the overlapped area;
if the target areas often overlap, the duty cycle of the overlapping areas may be calculated as previously described. For example, if z target areas have portions overlapping each other, where the area of the overlapping area is Cs and the sum of the areas of the z target areas is Zs, the ratio of the area of the overlapping area to the total area of the target display area having the overlapping area is k=cs/Zs.
If the area ratio is greater than or equal to the allowable value, synthesizing the target wanted display area with the overlapped area into a target display area, wherein the size Ac=Ab/k of the synthesized target display area, ab is the size of the target pixel area with the largest size in each target display area with the overlapped area before synthesis, and the center position of the synthesized target display area is the centroid position of all the target display areas participating in synthesis;
Wherein the allowable value, which is a critical value determined by the area ratio whether the target display area is displayed synthetically or separately, may be set empirically. When the area ratio is larger than or equal to the allowable value, the adjacent groups are relatively close to each other, and the large display area can be synthesized by a plurality of display areas for display, the size of the synthesized display area is set according to the overlapping degree before synthesis, and the smaller the overlapping area ratio is, the larger the size of the synthesized target display area is. Otherwise, the larger the overlapping area ratio is, the smaller the size of the synthesized target display area is. Therefore, the viewing requirements of more people can be met, resources can be saved, and the number of display areas is reduced. Wherein the size of the display area refers to the length of the diagonal of the rectangular display area.
The method for calculating the center position of the synthesized target display area may be as follows. There are m target display areas involved in the composition, wherein the coordinates of the centroid position of the jth target area are (x j ,y j ) Wherein j is a positive integer less than or equal to m, the center position coordinate of the synthesized target display area is ((x) 1 +x 2 +…+x m-1 +x m )/m,(y 1 +y 2 +…+y m-1 +y m )/m）。
And S259, if the area ratio is smaller than the allowable value, moving each target wanted display area with the overlapped area to a position without overlapping in a direction away from each other.
When the area ratio is smaller than the allowable value, the distance between adjacent people is larger, and the positions of the target display areas with the overlapped areas are appropriately moved, so that the target display areas can not interfere with each other.
As an alternative but advantageous implementation manner, as shown in fig. 6, the step S3 of determining the target resolution of each target display area for display according to the crowd distribution situation around the display screen further includes the following steps:
s31, acquiring the center position of each target display area;
s32, obtaining the distance between each target crowd and the center position of the corresponding target display area;
and S33, determining target resolution of each target display area for display according to the distance between each target crowd and the center position of the corresponding target display area.
The resolution at the time of the display of the target area is higher if the distance between the center position of the target crowd and the center position of the target display area is closer, and the resolution at the time of the display of the target area is lower if the distance between the center position of the target crowd and the center position of the target display area is closer, and the target resolution of the target display area and the distance between the center position of the target crowd and the center position of the target display area are in a inversely related relationship. The specific correspondence between the target resolution of the target display area and the distance between the center position of the target crowd and the center position of the target display area can be determined through experiments. According to the embodiment, the resolution ratio of the target display area in display is adjusted according to the distance between the target crowd and the target area, so that people in different positions can see clear images, the LED lamp bead 10 resources arranged on the display screen can be reasonably utilized, the energy consumption of the display screen can be reduced, the temperature of the display screen is reduced, and the service life of the LED lamp bead 10 is prolonged.
Because the large-scale LED display screen 8 generates a large amount of heat, the LED lamp beads 10 work in a high-temperature environment, and therefore the service life of the LED lamp beads 10 can be reduced. As an alternative but advantageous embodiment, as illustrated in fig. 7, this is in the present example: and S3, determining target resolution of each target display area for display according to the crowd distribution situation around the display screen, wherein the method further comprises the following steps of:
s34, acquiring the environment real-time temperature of the area where the LED lamp beads 10 of each target display area are located;
in specific implementation, temperature sensors can be arranged in each area of the LED display screen 8 to detect the temperature of each position of the LED display screen 8 in real time.
S35, acquiring a temperature limit value of the LED lamp beads 10;
since the service life of the LED lamp bead 10 is reduced when the ambient temperature of the LED lamp bead 10 is too high, this step will not cause the maximum temperature allowed when the service life of the LED lamp bead 10 is significantly reduced to be used as the temperature limit value of the LED lamp bead 10.
S36, judging whether the real-time environment temperature of the LED lamp beads 10 is greater than the temperature limit value of the LED lamp beads 10;
s37, if not, keeping the target resolution of the current target area unchanged;
if the temperature of the environment where the LED lamp beads 10 are located is lower than or equal to the temperature limit value of the LED lamp beads 10, the current environment temperature is indicated not to cause the obvious reduction of the ground service life of the LED lamp beads 10, and then the display can be continued along with the previous target resolution
And S38, if not, adjusting the target resolution of each target display area according to the real-time temperature of the LED lamp beads 10 of each target display area.
If the temperature of the environment where the LED lamp beads 10 are located is greater than the temperature limit value of the LED lamp beads 10, the current environment temperature is indicated to cause the service life of the ground of the LED lamp beads 10 to be obviously shortened, at this time, the resolution can be reduced, and part of the LED lamp beads 10 are turned off, so that the environment temperature is prevented from continuously rising.
When the ambient light is strong, the ambient light irradiated onto the LED screen will also affect the display effect of the LED display screen 8, and in this embodiment, as shown in fig. 8, after controlling each target display area of the LED display screen 8 to display with the corresponding target resolution, the method further includes the following steps:
s5, obtaining the ambient illumination intensity of each target display area;
in specific implementation, the illumination intensity sensors arranged at different positions of the LED display screen 8 can be used for detecting the illumination intensities at different positions of the LED display screen 8.
S6, adjusting the brightness of the LED lamp beads 10 of each target display area according to the ambient illumination intensity of each target area.
If the ambient light intensity of a certain target area is higher, the brightness of the LED lamp beads 10 in the area is increased, and if the ambient light intensity of a certain target area is reduced, the brightness of the LED lamp beads 10 in the area is correspondingly reduced, so that the brightness of the LED lamp beads 10 is positively related to the ambient light intensity of the target area.
As an alternative but advantageous embodiment, as shown in fig. 9, in this embodiment, after the step S6 of adjusting the brightness of the LED lamp beads 10 of each target display area according to the ambient light intensity of each target area, the following steps are further included:
s7, acquiring the real-time brightness of each LED lamp bead 10 after brightness adjustment;
when the brightness of the LED lamp beads 10 is adjusted according to the ambient illumination intensity, the light distribution curve of the LED lamp beads 10 is changed, so that the consistency of the viewing effect is affected.
S8, adjusting the light distribution curve of each LED lamp bead 10 according to the real-time brightness of each LED lamp bead 10.
In this embodiment, after the brightness of the LED lamp bead 10 is adjusted, the light distribution curve of the LED lamp bead 10 is adjusted accordingly, so that the light distribution curve of the LED lamp bead 10 is kept substantially consistent before and after the brightness adjustment, and the consistency of the viewing effect can be ensured.
As an alternative but advantageous embodiment, as shown in fig. 10, the display screen comprises several sub-display screens in this example, at least two adjacent sub-display screens being located in different planes. The spliced structure of the adjacent non-coplanar sub-display screens is easy to cause interference of illumination generated by the sub-display screens when displaying images on other adjacent sub-display screens. In this embodiment, one of the two adjacent sub-display screens is set as a sub-first display screen, and the other is set as a second sub-display screen 92, and the display control method further includes the following steps:
S501, selecting a pixel from a first display screen as a target pixel;
the embodiment reduces the influence of illumination of adjacent sub-display screens by adjusting and compensating the intensity of illumination of pixels in the display screen. And calculating the illumination intensity adjustment quantity of the pixels of the first display screen one by one during adjustment. For convenience of description, a pixel currently subjected to calculation of the illumination intensity adjustment amount is referred to herein as a target pixel. In this step, one pixel from among pixels in the first display screen, for which the illumination intensity adjustment amount is not calculated, may be selected as the target pixel for calculating the illumination intensity adjustment amount.
S502, selecting all light-emitting units which can irradiate the target pixel position from the light-emitting units of the second sub-display screen 92 as target light-emitting units;
wherein the light emitting unit may make the LED lamp beads 10. In this embodiment, a part of the light emitting units in the second sub-display may not be irradiated into the first sub-display 91 at all, so that the part of the light emitting units may be omitted. This step therefore selects only those light emitting units, referred to herein as target light emitting units, that can be illuminated at the target pixel location for calculation.
S503, acquiring illumination intensity distribution of each target light-emitting unit along the angular position;
Typically, the illumination intensity of the LED light beads 10 at different angular positions is not the same. The distribution of the illumination intensity of the target light-emitting unit along the angular position reflects the distribution of the illumination intensities of the LED lamp beads 10 at different angular positions. The distribution of the illumination intensity at different angular positions can also be represented by a light distribution curve.
S504, acquiring the angular positions between the target pixel and each target light-emitting unit;
when the display screen is mounted, the positions of the sub-display screens are relatively fixed, so that the angular positions between the target pixels and the target light-emitting units are fixed. The angular position between the target pixel and each target light emitting unit can be obtained through the fixed position relation between the target pixel and each target light emitting unit.
S505, according to the illumination intensity distribution of each target light-emitting unit along the angular position and the angular position between the target pixel and each target light-emitting unit, acquiring the illumination intensity of each target light-emitting unit irradiated to the target pixel;
when the angular position between the target pixel and each target light-emitting unit is known, the illumination intensity of the target light-emitting unit at the angular position where the target light-emitting unit irradiates the target pixel can be known by combining the illumination intensity distribution of each target light-emitting unit along the angular position, and the illumination intensity of the angular position is the illumination intensity of the target light-emitting unit irradiating the target pixel.
S506 rootCalculating an illumination intensity influence value Qr of the target pixel from illumination intensities of the respective target light emitting units irradiated to the target pixel, wherein qr=q 1 +q 2 …q n-1 +q n Number of n target light emitting units, q i The illumination intensity of the ith target light emitting unit to the target pixel is set, wherein i is a positive integer less than or equal to n;
because the target pixel is affected by the illumination superposition effect of each target light emitting unit, the illumination intensity of each target light emitting unit irradiated to the target pixel is superposed in this step to obtain the illumination intensity influence value of the adjacent second sub-display screen 92 on the target pixel.
S507, determining an illumination intensity adjustment quantity Qr of the target pixel according to the illumination intensity influence value, wherein qc= -Qr;
this step calculates an adjustment amount that reduces the illumination effect of the adjacent sub-display screen, the adjustment amount being inversely proportional to the illumination intensity effect value.
S508, adjusting the illumination intensity of the light emitting units of the first sub-display screen 91 corresponding to the target pixels according to the illumination intensity adjustment amount;
in this step, the illumination intensity of the target pixel is adjusted according to the adjustment amount calculated in the previous step, and since the target pixel is composed of light emitting units, the illumination intensity of the light emitting units constituting the pixel is actually adjusted, and the total adjustment amount of the illumination intensities of all the light emitting units constituting the pixel is equal to the adjustment amount Qr calculated in the previous step.
S509, repeating steps S501 to S508 until the adjustment of the full illumination intensity is performed for all the pixels of the first sub-display 91.
In a specific implementation, the illumination intensity of each pixel in the first sub-display 91 may be adjusted according to the foregoing method, and the influence of illumination on the adjacent sub-display is detected through the adjustment of the illumination intensity.
Example 2
The embodiment provides a display control device of jumbo size LED display screen 8 for curtain, LED display screen 8 includes a plurality of LED lamp pearl 10, the device includes:
the crowd distribution situation acquisition module is used for acquiring crowd distribution situations around the LED display screen 8;
the target display area determining module is used for determining at least a part of areas from the LED display screen 8 as target display areas according to the crowd distribution situation around the LED display screen 8;
the target resolution determining module is used for determining target resolution of each target display area for display according to crowd distribution conditions around the display screen;
and the display control module is used for controlling each target display area of the LED display screen 8 to display respectively with corresponding target resolution.
Example 3
The embodiment provides a display system, including control circuit and a plurality of LED lamp pearl 10, control circuit with LED lamp pearl 10 is connected, can let a plurality of LED lamp pearls 10 constitute a pointolite 1 during the concrete implementation, in order to improve the homogeneity of the illumination intensity distribution of LED lamp pearl 10, can set up lens 6 in LED lamp pearl 10 top. The point light source 1 is connected with the control circuit, wherein the point light source 1 is shown as 11 and fig. 12. The power supply may be mounted on the mounting surface 4 of the building in a matrix arrangement, specifically, the power supply may be mounted by means of the mounting profile 5 in fig. 13, the bottom card 2 in fig. 14, or the bottom card 2 and the steel wire 3 in fig. 15. Each point light source 1 is provided with a corresponding sub-control circuit, and the sub-control circuit is electrically connected with the control circuit.
The control circuit includes at least one processor, at least one memory, and computer program instructions stored in the memory that when executed by the processor implement the method of any of embodiment 1. In particular, the processor may be a Central Processing Unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured as one or more integrated circuits that implement embodiments of the present invention.
The memory may include mass storage for data or instructions. By way of example, and not limitation, the memory may comprise a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (Universal Serial Bus, USB) Drive, or a combination of two or more of the foregoing. The memory may include removable or non-removable (or fixed) media, where appropriate. The memory may be internal or external to the data processing apparatus, where appropriate. In a particular embodiment, the memory 402 is a non-volatile solid state memory. In a particular embodiment, the memory includes Read Only Memory (ROM). The ROM may be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these, where appropriate.
The processor implements any of the data addressing methods of the above embodiments by reading and executing computer program instructions stored in memory.
The display screen of the present embodiment may also include a communication interface and bus in one example. The control circuit, the memory and the communication interface are connected through a bus and complete communication with each other.
The communication interface is mainly used for realizing communication among the modules, the devices, the units and/or the equipment in the embodiment of the invention.
The bus includes hardware, software, or both that couple the various components for the display screen to one another. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel architecture (MCa) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of the above. Bus 410 may include one or more buses, where appropriate. Although embodiments of the invention have been described and illustrated with respect to a particular bus, the invention contemplates any suitable bus or interconnect.
As shown in fig. 16 and 17, the data line 7 transmitted by an optical fiber may be adopted in the implementation, and the optical fiber may pass through each LED point light source 1 according to the arrangement manner in fig. 16, so as to send the data for controlling the LED lamp beads 10 to each point light source 1. In order to distinguish the data of different point light sources 1, the identity information representing the ID of the point light source 1 can be added before the data of each point light source 1, and the sub-control circuit of the point light source 1 only processes the data conforming to the identity information of the point light source 1.
The above is a detailed description of the display control method of the large-size LED display screen 8 for curtain wall and the LED display screen 8 provided by the embodiments of the present invention.
It should be understood that the invention is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
In the foregoing, only the specific embodiments of the present invention are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and they should be included in the scope of the present invention.
Claims (9)
1. The display control method of the large-size LED display screen for the curtain wall is characterized in that the LED display screen comprises a plurality of LED lamp beads, and the method comprises the following steps:
s1, acquiring crowd distribution conditions around an LED display screen;
S2, determining at least a part of areas from the LED display screen as target display areas according to the crowd distribution situation around the LED display screen;
s3, determining target resolution of each target display area for display according to crowd distribution conditions around the display screen;
s4, controlling each target display area of the LED display screen to display respectively with corresponding target resolution;
the S1 is that the method for acquiring the crowd distribution situation around the LED display screen further comprises the following steps:
s11, acquiring images of people around the LED display screen as initial images;
s12, identifying a human body target in the initial image;
s13, obtaining the distance between each human body target;
s14, dividing the human body targets into a plurality of groups of people through a clustering algorithm according to the distance between the human body targets;
s2, determining at least a part of the area from the LED display screen as a target display area according to the crowd distribution situation around the LED display screen further comprises the following steps:
s21, acquiring the number of human body targets of each crowd;
s22, acquiring a threshold value of the target quantity of the human body;
s23, screening out the crowd with the number of human targets larger than the threshold value of the number of human targets from all the crowd as target crowd;
s24, obtaining the central position of each target crowd;
And S25, determining target display areas corresponding to all target crowds according to the relative position relation between the central positions of all target crowds and the LED display screen.
2. The method for controlling the display of a large-sized LED display screen for a curtain wall according to claim 1, wherein the step S25 of determining the target display area corresponding to each target crowd according to the relative positional relationship between the center position of each target crowd and the LED display screen further comprises the steps of:
s251, determining the central position of a target display area corresponding to each target crowd as a reference central position according to the central position of each target crowd;
s252, obtaining the distance between the central position of each target crowd and the corresponding reference central position;
s253, determining the size of a target display area according to the distance between the central position of each target crowd and the corresponding reference central position;
and S254, determining the target display areas corresponding to all the target groups according to the reference center positions of the target display areas and the sizes of the corresponding target display areas.
3. The method for controlling the display of a large-sized LED display for a curtain wall according to claim 2, wherein the step S25 of determining the target display area corresponding to each target crowd according to the relative positional relationship between the center position of each target crowd and the LED display comprises the steps of:
S255, judging whether each target display area is overlapped or not;
s256, if not, keeping the central position and the size of each current target pixel area unchanged;
s257, if yes, obtaining the area of the overlapped area and the duty ratio k of the total area of the target display area with the overlapped area;
s258, if the area ratio is larger than or equal to an allowable value, synthesizing the target display areas with the overlapped areas into one target display area, wherein the size Ac=Ab/k of the synthesized target display area, ab is the size of the target display area with the largest size in the target display areas with the overlapped areas before synthesis, and the center position of the synthesized target display area is the centroid position of all the target display areas participating in synthesis;
and S259, if the area ratio is smaller than the allowable value, moving each target display area with the overlapped area to a position without overlapping in a direction away from each other.
4. The method for controlling the display of the large-sized LED display screen for curtain wall according to claim 2, wherein the step S3 of determining the target resolution of each target display area for display according to the distribution of people around the display screen further comprises the steps of:
S31, acquiring the center position of each target display area;
s32, obtaining the distance between the central position of each target crowd and the central position of the corresponding target display area;
and S33, determining target resolution of each target display area for display according to the distance between the central position of each target crowd and the central position of the corresponding target display area.
5. The display control method of a large-sized LED display for a curtain wall according to claim 1, wherein the display includes a plurality of sub-displays, at least two adjacent sub-displays are located on different planes, one of the two adjacent and non-coplanar sub-displays is set as a first sub-display, and the other is a second sub-display, the display control method further comprising the steps of:
s501, selecting a pixel from a first sub-display screen as a target pixel;
s502, selecting all light-emitting units capable of irradiating the target pixel position from the light-emitting units of the second sub-display screen as target light-emitting units;
s503, acquiring illumination intensity distribution of each target light-emitting unit along the angular position;
s504, acquiring the angular positions between the target pixel and each target light-emitting unit;
S505, according to the illumination intensity distribution of each target light-emitting unit along the angular position and the angular position between the target pixel and each target light-emitting unit, acquiring the illumination intensity of each target light-emitting unit irradiated to the target pixel;
s506 calculating an illumination intensity influence value Qr of the target pixel from the illumination intensities of the respective target light emitting units to the target pixel, wherein qr=q 1 +q 2 …q n-1 +q n Number of n target light emitting units, q i The illumination intensity of the ith target light emitting unit to the target pixel is set, wherein i is a positive integer less than or equal to n;
s507, determining an illumination intensity adjustment quantity Qr of the target pixel according to the illumination intensity influence value, wherein qc= -Qr;
s508, adjusting the illumination intensity of the light-emitting units of the first sub-display screen corresponding to the target pixels according to the illumination intensity adjustment quantity;
s509, repeating steps S501 to S508 until the adjustment of the illumination intensity is completed for all pixels of the first sub-display.
6. The method for controlling the display of a large-sized LED display for a curtain wall according to claim 1, wherein in S3, the step of determining the target resolution of each target display area for display according to the distribution of people around the display comprises the steps of:
S34, acquiring the environment real-time temperature of the area where the LED lamp beads of each target display area are located;
s35, acquiring a temperature limit value of the LED lamp bead;
s36, judging whether the ambient real-time temperature of the LED lamp beads is greater than the temperature limit value of the LED lamp beads or not;
s37, if not, keeping the target resolution of the current target area unchanged;
s38: and if so, adjusting the target resolution of each target display area according to the real-time temperature of the LED lamp beads of each target display area.
7. The method for controlling the display of a large-sized LED display for a curtain wall according to claim 1, further comprising, after said S4, controlling each target display area of the LED display to be displayed with a corresponding target resolution, the steps of:
s5, obtaining the ambient illumination intensity of each target display area;
s6, adjusting the brightness of the LED lamp beads of each target display area according to the ambient illumination intensity of each target area;
s7, acquiring the real-time brightness of each LED lamp bead after brightness adjustment;
and S8, adjusting the light distribution curve of each LED lamp bead according to the real-time brightness of each LED lamp bead.
8. Display control device of jumbo size LED display screen for curtain, its characterized in that, the LED display screen includes a plurality of LED lamp pearl, the device includes:
The crowd distribution situation acquisition module is used for acquiring crowd distribution situations around the LED display screen;
the target display area determining module is used for determining at least one part of area from the LED display screen as a target display area according to the crowd distribution situation around the LED display screen;
the target resolution determining module is used for determining target resolution of each target display area for display according to crowd distribution conditions around the display screen;
the display control module is used for controlling each target display area of the LED display screen to display respectively with corresponding target resolution;
the step of obtaining the crowd distribution situation around the LED display screen further comprises the following steps:
s11, acquiring images of people around the LED display screen as initial images;
s12, identifying a human body target in the initial image;
s13, obtaining the distance between each human body target;
s14, dividing the human body targets into a plurality of groups of people through a clustering algorithm according to the distance between the human body targets;
wherein determining at least a part of the area from the LED display screen as the target display area according to the crowd distribution situation around the LED display screen further comprises the steps of:
S21, acquiring the number of human body targets of each crowd;
s22, acquiring a threshold value of the target quantity of the human body;
s23, screening out the crowd with the number of human targets larger than the threshold value of the number of human targets from all the crowd as target crowd;
s24, obtaining the central position of each target crowd;
and S25, determining target display areas corresponding to all target crowds according to the relative position relation between the central positions of all target crowds and the LED display screen.
9. A display system comprising a control circuit and a number of LED light beads, the control circuit being connected to the LED light beads, the control circuit comprising at least one processor, at least one memory and computer program instructions stored in the memory, which when executed by the processor, implement the method of any of claims 1-7.
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| CN115223514A (en) * | 2022-07-18 | 2022-10-21 | 深圳市安信泰科技有限公司 | Liquid crystal display driving system and method for intelligently adjusting parameters |
| CN115909958A (en) * | 2022-12-29 | 2023-04-04 | 深圳市联诚发科技股份有限公司 | Display control method and device of spherical dynamic display screen and display screen |
| CN116129798A (en) * | 2023-01-13 | 2023-05-16 | 深圳市陆百亿光电有限公司 | LED lamp bead brightness control method and device based on artificial intelligence algorithm |
| CN116437538A (en) * | 2023-01-19 | 2023-07-14 | 旭宇光电（深圳）股份有限公司 | Dimming method and system for crowd gathering monitoring based on multifunctional intelligent lamp post |
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