CN105632349B - L ED spherical display screen playing management method, device and system - Google Patents
L ED spherical display screen playing management method, device and system Download PDFInfo
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Abstract
The invention provides a method for playing management of an L ED spherical display screen, which comprises the steps of S1, obtaining a display picture of a rectangular L ED program page, S2, dividing the display picture into four equal quadrants, S3, reserving all pixels on an equal division line, and S4, taking any quadrant of the display picture to perform drawing of latitude pixels and longitude pixels.
Description
Technical Field
The invention relates to the field of LED spherical display screen playing application, in particular to a method, a device and a system for LED spherical display screen playing management.
Background
At present, an LED (LaDge electric Display) Display screen is a screen body formed by a plurality of unit Display panels or unit Display boxes which can be combined and spliced, and a set of appropriate controller (main control panel or control system) is added. Therefore, the display panels (or unit boxes) with various specifications can be matched with controllers with different control technologies to form a plurality of LED display screens so as to meet the requirements of different environments and different display requirements.
The LED display screen can display variable numbers, characters and graphic images; the LED lamp can be used in indoor environment and outdoor environment, and has the advantages that a projector, a television wall and a liquid crystal display screen cannot be compared with the projector, the television wall and the liquid crystal display screen.
However, the LED display playing method and apparatus in the prior art are both suitable for flat display, generally rectangular picture, and if the whole rectangular picture is directly changed into whole curved display, the image will be deformed and distorted, and how to effectively perform curved display is often performed, so as to meet the needs of people, and become a subject of continuous exploration of people.
Disclosure of Invention
In order to solve the above problems, the invention provides a method, a device and a system for managing playing of an LED spherical display screen, which solve the problem that curved surface display cannot be effectively performed in the prior art.
The invention discloses a method for managing playing of an LED spherical display screen, which comprises the following steps:
s1, acquiring a display picture of a rectangular LED program page;
s2, dividing the display picture into four equal quadrants;
s3, reserving all pixels on the equal dividing line;
s4, taking any quadrant of the drawing points to perform drawing points of weft pixels and warp pixels, wherein the weft pixels left after the drawing points meet the following formula:
K=1/2×DcosA,
the meridian pixels left after the snapshot satisfy the following formula:
or M2=1/2 × DcosA 0 ≦ a < u;
where D is the pixel value over the length of the rectangle,
a is an included angle which takes the horizontal line as the bottom line and rotates along the longitudinal axis,
k is a reserved pixel value on the weft;
m1 or M2 is a pixel value left on the meridian; u is a value range: u is more than or equal to 1 pi/4 and less than or equal to 3.5 pi/8.
Further, u is 3 pi/8.
Furthermore, the special effect of going out of the previous program page and the special effect of going in the next program page are the same and are performed simultaneously.
Further, step S0 is provided before step S1, and LED display screen information is set, where the LED display screen information specifically includes: the number, column starting point, row starting point, width and height of the LED screens;
the program page comprises a plurality of program windows, and the program windows specifically comprise: a document window, a multi-line text window, a single-line text window, a clock window, a timing window, an external video window, a weather forecast window.
The invention discloses a device for managing the playing of an LED spherical display screen, which comprises:
the program page acquisition unit is used for acquiring a display picture of a rectangular LED program page;
a program page dividing unit for dividing the display picture into four equal quadrants;
the pixel indwelling unit is used for indwelling all pixels on the equal division line;
the pixel snapshot unit is used for taking any quadrant of the pixel to perform snapshot of weft pixels and warp pixels, and the weft pixels left after snapshot satisfy the following formula:
K=1/2×DcosA,
the meridian pixels left after the snapshot satisfy the following formula:
or M2=1/2 × DcosA 0 ≦ A < u;
where D is the pixel value over the length of the rectangle,
a is an included angle which takes the horizontal line as the bottom line and rotates along the longitudinal axis,
k is a reserved pixel value on the weft;
m1 or M2 is a pixel value left on the meridian; u is a value range: u is more than or equal to 1 pi/4 and less than or equal to 3.5 pi/8.
Further, u is 3 pi/8.
Furthermore, the program page playing unit is provided with a special effect setting unit, and the special effect of leaving the spot of the previous program page and the special effect of entering the spot of the next program page are the same and are performed simultaneously.
Furthermore, the program page acquisition unit also comprises a screen information setting unit used for setting LED display screen information,
the LED display screen information specifically comprises: the number, the column starting point, the row starting point, the width and the height of the LED screens;
the program page comprises a plurality of program windows, and the program windows specifically comprise: a document window, a multi-line text window, a single-line text window, a clock window, a timing window, an external video window, a weather forecast window.
The invention discloses a system for playing and managing an LED spherical display screen, which comprises a plurality of display panels, wherein each display panel comprises an LED lamp panel, an LED lamp arranged on the LED lamp panel, a power supply connected with the LED lamp panel and a unit control panel, and the unit control panel controls the display of the LED lamp on the LED lamp panel.
The method, the device and the system for playing the management music on the LED spherical display screen have the following beneficial technical effects that:
the method, the device and the system for playing and managing the LED spherical display screen are characterized in that warp and weft pixels are adopted to play the program pages, the played program pages are not deformed or distorted, and the display effect is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1a is a schematic flow chart of a method for playing management music on an LED spherical display screen according to the present invention;
FIG. 1b is a quadrant view of a rectangular LED;
FIG. 1c is a drawing of a spherical surface;
FIG. 2 is a functional block diagram of an apparatus for playing management music on an LED spherical display screen according to the present invention;
fig. 3 is a system configuration diagram of the LED spherical display screen playing management music according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1a, an embodiment of the present invention provides a method for playing a management song on an LED spherical display screen, including:
s1, acquiring a display picture of a rectangular LED program page;
a plurality of plane display units are spliced, for example, a trapezoid module or a fan-shaped module is spliced through a rabbet to form a spherical display unit.
A program page refers to a set of program windows and program content that is set by a user. The program pages are in parallel and in turn played relation. The program page comprises a plurality of program windows, and the program windows specifically comprise: a document window, a multi-line text window, a single-line text window, a clock window, a timing window, an external video window, a weather forecast window.
In the attribute window of the program page, the following attributes of the page may be set:
name: modifying the name of the program page;
background picture: a picture can be set as a background picture of the program page;
background color: clicking the color bar can select any color as the background color of the program page;
background music: an audio file can be set as background music of the program page;
volume: setting the volume of the background music;
s2, dividing the display picture into four equal quadrants;
specifically, the rectangular screen is equally divided into four equal rectangles along the middle point of the length or width, as shown in fig. 1b, and the bisector is shown by the dotted line in the figure.
S3, reserving all pixels on the equal dividing line;
i.e. the pixels on the dashed lines in fig. 1b are left.
S4, taking any quadrant of the image to perform the snapshot of the latitude line pixel and the longitude line pixel, as shown in figure 1c,
the reason why the snapshot is needed is that the rectangular picture is placed on the spherical surface, some pixels must be discarded to be placed on the spherical surface, and the planar rectangular pixels cannot be all left on the spherical surface LED.
The drawing points are respectively taken on the weft and the warp.
The weft pixels left after the snapshot satisfy the following formula:
K=1/2×DcosA,
if only the pixel of the latitude line is tapped, after the horizontal line is tapped, each line on the spherical screen has the corresponding points with the correct number, but the phenomenon of distortion can be seen when the video is played at this time, such as: when the input video image is the previous circular image, an approximate circle of the upper vertex and the lower vertex is output. This is caused by the fact that there are few lower snapshots and many upper snapshots, which may cause serious image distortion and affect the viewing effect. To alleviate this, it is necessary to perform a snapshot on the lines so that the decimated image has the same scaling ratio columns in the row and column directions.
The meridian pixels left after the snapshot satisfy the following formula:
or M2=1/2 × DcosA,0 ≦ a < u;
where D is the pixel value over the length of the rectangle,
a is an included angle which takes the horizontal line as the bottom line and rotates along the longitudinal axis,
k is a reserved pixel value on the weft;
m1 or M2 is a pixel value reserved on the longitude line; u is a value range: u is more than or equal to 1 pi/4 and less than or equal to 3.5 pi/8.
Namely: the position on the sphere closer to the top is not integrated, and a constant is taken, M2= D/cosAdA; practice proves that u is 3 pi/8, and the effect is better.
Considering that the two-level image has a high snapshot ratio and the image is severely distorted, the snapshot is high here, and the row and column snapshot ratios are not necessarily equal.
In the actual operation process, the height ratio of the input and output images can be adjusted by adjusting the position of the dividing point u (such as 3 pi/8), the smaller the position of the dividing point u is, the smaller the ratio is, and conversely, the larger the ratio is.
Wherein, the playing rule of the program page is as follows: playing the program page according to a preset playing mode; the program page is a newly acquired program page which is not played, and the played program page is shifted or discarded or skipped over.
The playing according to the predetermined playing mode may be: firstly, presetting playing time; and secondly, playing the program page according to the playing time length. Namely: the play time length is specified. After the program page is played for a set time, skipping to the next program page for playing.
Or, in another embodiment, the playing according to the predetermined playing mode may be: the first step is: presetting playing content; the second step is: and playing the program page according to the playing content. Namely: and playing the program page, and skipping to the next program page for playing after all the contents in the program page are played.
The leaving special effect of the previous program page and the entering special effect of the next program page are the same and are performed simultaneously, so that a playing picture cannot be free after setting, namely, a black screen phenomenon occurs, a window can be divided into 16 small parts at most, and special effects are used respectively, so that the effect is more exquisite; the dwell time is set after the picture enters and before the picture leaves, and the unit of the dwell time is 0.1 second. The flashing function can be selected when the picture stays, so that the picture can attract more attention; the smaller the total time value for the completion of the current special effect action, the faster the special effect action is represented.
Further, step S0 is provided before step S1, and LED display screen information is set, where the LED display screen information specifically includes: number of LED screens, column start, row start, width, height.
The program tree of the technical scheme consists of four levels, which are sequentially as follows: LED screen, program page, program window and playing content bar. The user uses a large LED screen, and the display content on the large screen is determined by the large LED screen. There is a side-by-side relationship between each "LED screen" where multiple program pages can be added.
The size of the LED screen must be set correctly, otherwise, only a part of the program may be displayed or the program cannot be normally displayed after the program is produced and played.
The setting method comprises the following steps: a selection menu "main menu → control screen → screen management", pops up a screen management window where the number, starting position, size, and the like of LED screens are set.
Referring to fig. 2, a device 1 for playing management of an LED spherical display screen, where the device 1 is a functional device for implementing the above method, and where the device 1 is not described in detail, please refer to the description of the above method, the device 1 includes:
a program page acquisition unit 10, configured to acquire a display screen of a rectangular LED program page;
a program page dividing unit 20 for dividing the display screen into four equal quadrants;
a pixel-holding unit 30 for holding all the pixels on the bisector;
a pixel snapshot unit 40, configured to take any quadrant of the pixel to perform snapshot of weft pixels and warp pixels, where the weft pixels left after snapshot satisfy the following formula:
K=1/2×DcosA,
the meridian pixels left after the snapshot satisfy the following formula:
or M2=1/2 × DcosA 0 ≦ a < u;
where D is the pixel value over the length of the rectangle,
a is an included angle which takes the horizontal line as the bottom line and rotates along the longitudinal axis,
k is a reserved pixel value on the weft;
m1 or M2 is a pixel value left on the meridian; u is a value range: u is more than or equal to 1 pi/4 and less than or equal to 3.5 pi/8.
Further, u is 3 pi/8.
Furthermore, the special effect of going out of the previous program page and the special effect of going in the next program page are the same and are performed simultaneously.
Further, the program page acquiring unit 10 also includes a screen information setting unit 5 for setting LED display screen information,
the LED display screen information specifically comprises: the number, column starting point, row starting point, width and height of the LED screens;
the program page comprises a plurality of program windows, and the program windows specifically comprise: a document window, a multi-line text window, a single-line text window, a clock window, a timing window, an external video window, a weather forecast window.
Referring to fig. 3, a system 100 for playing management of an LED spherical display screen includes a plurality of display panels 200, each display panel includes an LED lamp panel (not shown), an LED lamp (not shown) disposed on the LED lamp panel, a power supply (not shown) connected to the LED lamp panel, and a unit control panel 300, the unit control panel controls display of the LED lamp on the LED lamp panel, and the unit control panel 300 has the apparatus 1 for playing management of an LED spherical display screen.
Wherein, adopt a plurality of flat display element to splice, for example trapezoidal module or fan-shaped module pass through the rabbet concatenation to form spherical display element 100.
The system supports the playing of media files in the forms of video, audio, images, characters, flash, gif and the like; supports the display of WoDd, excel and PPT; the display of a clock, timing and weather forecast is supported; supporting the playing of external Video signals (TV, AV, S-Video). The software supports multi-page and multi-partition program editing, and provides rich and flexible video switching function, partition special effect and three-dimensional special effect animation. The software builds a platform which can enable a user to fully exert originality, and the display effect of the display screen is perfectly displayed.
The system supports a 5A/5AF/5AS receiving card and a T7 sending card, supports a computer to control a plurality of LED display screens, and supports intelligent parameter setting of the LED display screens. The manual and camera point-by-point correction of the large LED screen is supported, and the correction data collected by other professional correction equipment is compatible.
The working process of the system is as follows: the unit control board 300 captures media files in the form of video, audio, image, text, flash, gif, etc., and inputs the media files to the plurality of display surfaces 200 for playing through the device 1 for managing the playing of the LED spherical display screen.
The method, the device and the system for playing the management music on the LED spherical display screen have the following beneficial technical effects that:
the method, the device and the system for playing and managing the LED spherical display screen are characterized in that warp and weft pixels are adopted to play the program pages, the played program pages are not deformed or distorted, and the display effect is good.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A method for managing playing of an LED spherical display screen is characterized by comprising the following steps:
s1, acquiring a display picture of a rectangular LED program page;
s2, dividing the display picture into four equal quadrants;
s3, reserving all pixels on the equal dividing line;
s4, taking any quadrant of the drawing points to perform drawing points of weft pixels and warp pixels, wherein the weft pixels left after the drawing points meet the following formula:
K=1/2×DcosA,
the meridian pixels left after the snapshot satisfy the following formula:
or M2=1/2 × DcosA 0 ≦ a < u;
where D is the pixel value over the length of the rectangle,
a is an included angle which takes the horizontal line as the bottom line and rotates along the longitudinal axis,
k is a reserved pixel value on the weft;
m1 or M2 is a pixel value reserved on the longitude line; u is a value range: u is more than or equal to 1 pi/4 and less than or equal to 3.5 pi/8.
2. The method of claim 1, wherein u is 3 pi/8.
3. The method of claim 2, wherein the presentation effect of the previous program page and the presentation effect of the subsequent program page are the same and occur simultaneously.
4. The method according to claim 1, wherein step S0 is further provided before step S1, and LED display screen information is set, where the LED display screen information specifically includes: the number, the column starting point, the row starting point, the width and the height of the LED screens;
the program page comprises a plurality of program windows, and the program windows specifically comprise: a document window, a multi-line text window, a single-line text window, a clock window, a timing window, an external video window, a weather forecast window.
5. The utility model provides a device of spherical display screen broadcast management of LED which characterized in that includes:
the program page acquisition unit is used for acquiring a display picture of a rectangular LED program page;
the program page equally dividing unit is used for dividing the display picture into four equal quadrants;
the pixel indwelling unit is used for indwelling all pixels on the equal division line;
the pixel snapshot unit is used for taking any quadrant of the pixel to perform snapshot of latitude pixels and longitude pixels, and the latitude pixels remained after snapshot meet the following formula:
K=1/2×DcosA,
the meridian pixels left after the snapshot satisfy the following formula:
or M2=1/2 × DcosA 0 ≦ a < u;
where D is the pixel value over the length of the rectangle,
a is an included angle which takes the horizontal line as the bottom line and rotates along the longitudinal axis,
k is a reserved pixel value on the weft;
m1 or M2 is a pixel value left on the meridian; u is a value range: u is more than or equal to 1 pi/4 and less than or equal to 3.5 pi/8.
6. The apparatus of claim 5, wherein u is 3 pi/8.
7. The apparatus of claim 5, wherein said program page playing unit has a special effect setting unit for setting the special effect of the departure of the previous program page and the special effect of the entry of the next program page to be the same and simultaneous.
8. The apparatus of claim 5, wherein said program page acquiring unit further comprises a screen information setting unit for setting LED display screen information,
the LED display screen information specifically comprises: the number, the column starting point, the row starting point, the width and the height of the LED screens;
the program page comprises a plurality of program windows, and the program windows specifically comprise: a document window, a multi-line text window, a single-line text window, a clock window, a timing window, an external video window, a weather forecast window.
9. The utility model provides a system for spherical display screen of LED broadcast management, includes a plurality of display panel, display panel include the LED lamp plate, set up and be in the LED lamp plate on the LED lamp plate with the LED lamp plate link to each other the power and with the unit control panel, the demonstration of the LED lamp on the unit control panel control LED lamp plate, its characterized in that, the unit control panel have claim 5 to 8 any spherical display screen of LED broadcast management's device.
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CN106910456B (en) * | 2017-04-19 | 2019-07-16 | 西安诺瓦电子科技有限公司 | Display screen bearing calibration and device |
CN110505470B (en) * | 2018-05-18 | 2021-04-09 | 深圳裸眼威阿科技有限公司 | Image playing system and method based on spherical display screen |
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