Screen segmentation method and spherical screen

Abstract

The invention discloses a screen segmentation method and a spherical screen, and relates to the field of special-shaped LED screens. In the prior art, a current mainstream LED dome screen splicing scheme is limited by pixel point distribution of small-spacing LEDs, zigzag arrangement is formed at the edge, obvious splicing gaps are generated after splicing, and especially at the top of a spherical surface, due to sharp contraction of a circular arc and denser pixel point distribution, an image is seriously deformed, and the splicing effect is poor. According to the technical scheme, the screen segmentation method is applied to the spherical screen and comprises the steps that a spherical surface where the spherical screen is located is segmented into six identical cambered surfaces; on each cambered surface, the cambered surface is cut along the longitude and the latitude according to the longitude and the latitude of the sphere where the cambered surface is located, and n * m small units are formed; the graphs where the edges of the small units are located comprise trapezoids with the edges being arc lines and triangles with the edges being arc lines. The method is suitable for being applied to design work of the small-spacing LED spherical screen.

Description

Technical Field

[0001] The invention relates to the field of special-shaped LED screens, and specifically to a small-pitch LED spherical screen. Background Art

[0002] The spherical screen display technology is a special-shaped display technology with unique characteristics and advantages. By transmitting the picture to the spherical surface for display, it creates a rich and vivid visual effect and brings a strong visual impact to the audience. This technology has been widely used in many fields such as science and technology exhibitions, advertising, and creative displays.

[0003] Compared with traditional flat display, dome display has the following advantages:

[0004] Panoramic display: The ball screen display can play videos, pictures, images and other contents on the ball surface at will, realizing real-time, synchronous and clear information dissemination. The audience can watch in all directions and get an immersive viewing experience.

[0005] Attraction and attention: The dome screen uses a panoramic display method, which can attract the audience's attention and enhance the attractiveness of the information. The audience often has a strong interest in the content in the dome screen, which improves the effect of information transmission.

[0006] Multi-scenario application: The dome display technology is applicable to a variety of scenarios, including science and technology exhibitions, entertainment venues, commercial advertisements, etc. In different scenarios, the dome display can provide specific visual effects and enhance the audience's experience.

[0007] The common dome display solutions on the market usually use multiple projection devices for projection, and complete the large-screen display effect by splicing. However, traditional projection devices have problems such as high brightness requirements, strict placement requirements, and projection optical paths affecting user experience. At the same time, the existing technology also has some challenges in dome display, such as low brightness, large space occupied by projection equipment, high cost, unstable brightness, and susceptibility to environmental interference.

[0008] With the continuous advancement of LED display technology, small-pitch LED displays have become a popular choice in the high-end field. Compared with traditional LCD and DLP displays, small-pitch LED displays have the advantages of high brightness, high definition, high color saturation, wide viewing angle, and seamless splicing. The application of flip-chip integrated packaging technology has further improved the manufacturing process of LED displays and enhanced the stability and consistency of display effects.

[0009] Using small-pitch LED display screens to achieve ball screen display can bring more shocking visual effects. The miniaturization of LED pixel units makes the display effect more delicate, which can better meet people's needs for immersive visual experience. High-quality ball screen displays will become the first choice in science and technology exhibitions, entertainment venues, commercial advertisements and other fields.

[0010] With the development of society and the improvement of people's material living standards, the requirements for the quality of display products are getting higher and higher. People's pursuit of display effects is driving the continuous innovation and development of dome display technology. The use of small-pitch LEDs to achieve high-quality dome displays will enable viewers to obtain a more realistic and immersive viewing experience, further satisfying people's demand for high-quality visual effects.

[0011] In summary, as a special-shaped display technology, the ball screen display technology transmits the picture to the spherical surface for display, which brings rich and vivid visual effects. Although there are some technical and application limitations in the ball screen display solutions on the market, with the continuous improvement of LED display technology and the widespread application of small-pitch LED display screens, the future ball screen display will achieve more shocking visual effects and meet people's needs for high-quality and immersive visual experience.

[0012] However, the current mainstream LED ball screen splicing solutions are mainly divided into trapezoidal splicing and triangular splicing solutions. The advantages of these two solutions are simple structure, high sphericity, and easy assembly. However, due to the pixel distribution of small-pitch LEDs, the edge pixels of trapezoidal or triangular display units are unevenly distributed, forming a jagged arrangement at the edge, and after splicing, there are obvious splicing gaps, especially at the top of the sphere. Due to the sharp contraction of the arc, the pixel distribution is more dense, which will cause serious deformation of the image and affect the display effect. Summary of the invention

[0013] In view of the existing technical problems, the current mainstream LED ball screen splicing solutions are mainly divided into trapezoidal splicing and triangular splicing solutions. Due to the pixel point distribution of small-pitch LEDs, the edge pixels of the trapezoidal or triangular display units are unevenly distributed, thus forming a zigzag arrangement at the edge, and even more obvious splicing gaps are generated after splicing, especially at the top of the spherical surface. Due to the sharp contraction of the arc, the pixel points are more densely distributed, which will cause serious deformation of the image and affect the display effect. The technical solution provided by the present invention is:

[0014] A screen segmentation method is applied to a spherical screen, and the method comprises:

[0015] The step of dividing the spherical surface where the spherical screen is located into six identical arc surfaces;

[0016] The step of cutting each of the arc surfaces along the longitude and latitude lines of the sphere where the arc surface is located to form n*m small units;

[0017] The figures where the edges of the small unit are located include a trapezoid with arc edges and a triangle with arc edges.

[0018] Furthermore, a preferred embodiment is provided, wherein n=m.

[0019] Furthermore, a preferred embodiment is provided, wherein n>m.

[0020] Further, a preferred embodiment is provided, wherein the n <m。

[0021] Furthermore, a preferred embodiment is provided, wherein each of the small units meets a preset size.

[0022] Furthermore, a preferred embodiment is provided, in which on each of the arc surfaces, all the small units are distributed in a centrally symmetrical manner.

[0023] Furthermore, a preferred embodiment is provided, in which, among the six identical curved surfaces, on the figure where one of the curved surfaces is located, the straight line where the non-diagonal symmetry axis is located is parallel to the meridian.

[0024] Furthermore, a preferred embodiment is provided, wherein the spherical screen is a small-pitch LED spherical screen.

[0025] Based on the same inventive concept, the present invention also provides a spherical screen, which is formed by splicing n*m small units divided by the screen division method.

[0026] Furthermore, a preferred embodiment is provided, wherein the spherical screen is a small-pitch LED spherical screen.

[0027] Compared with the prior art, the technical solution provided by the present invention is beneficial in that:

[0028] The spherical screen provided by the present invention has the advantage of simplifying the production process.

[0029] The spherical screen provided by the present invention is divided into 6 identical curved regular quadrilaterals, each of which is seamlessly spliced ​​by multiple quadrilateral modules. At the top of the spherical screen, there is a complete curved quadrilateral to support uniform arrangement of pixels and achieve complete and uniform display of images. This design solves the problem of uneven pixel distribution at the top of the spherical screen in traditional solutions, as well as the problem of dome image distortion caused by the splicing process.

[0030] This design is particularly suitable for the application of small-pitch LED spherical screens. Small-pitch LED screens have the advantages of high brightness, high definition, high color saturation and wide viewing angle, and can provide better display effects. Through the spherical screen design provided by the present invention, a uniform arrangement of small-pitch LEDs can be achieved, thereby further improving the display effect of the spherical screen.

[0031] The spherical screen provided by the present invention provides a spherical screen design with a simplified production process, and solves some technical problems in traditional solutions by evenly arranging pixels and ensuring image integrity. It is particularly suitable for the design of small-pitch LED spherical screens. This design is expected to improve the display effect of the spherical screen and meet people's demand for high-quality, uniform and immersive visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional schematic diagram of the curved surface of the spherical screen mentioned in the first embodiment being cut into small units;

[0033] Figure 2 This is a schematic diagram of the position of the arc surface mentioned in the first embodiment in a three-dimensional coordinate system; DETAILED DESCRIPTION

[0034] In order to make the advantages and benefits of the technical solution provided by the present invention more clearly reflected, the technical solution provided by the present invention is now further described in detail with reference to the accompanying drawings, specifically:

[0035] Embodiment 1: This embodiment provides a screen segmentation method, which is applied to a spherical screen. The method includes:

[0036] The step of dividing the spherical surface where the spherical screen is located into six identical arc surfaces;

[0037] The step of cutting each of the arc surfaces along the longitude and latitude lines of the sphere where the arc surface is located to form n*m small units;

[0038] The figures where the edges of the small unit are located include a trapezoid with arc edges and a triangle with arc edges.

[0039] Specific:

[0040] Each unit is divided by longitude and latitude: Figure 1 , a single surface is evenly divided by longitude and latitude. The latitude direction ensures that the module size is a processable size, and the longitude direction ensures that the modules in each latitude band are congruent trapezoids, with slight differences in different longitude bands. Then, the irregular edge parts are designed separately.

[0041] For each face of the hexahedron, make parallel cuts with equal arc center angles along the latitude direction, and make uniform divisions of 90° along the meridian direction. When the arc surface is divided into m*n according to the module size requirements, each module occupies 90 / m° along the latitude direction and 90 / n° along the meridian direction. Two adjacent meridians and latitudes are divided into the required modules. The four vertices formed by the intersection of the four lines are the four vertices of the module. The detailed size of the module can be obtained by calculating the length of the four sides.

[0042] The detailed calculation method is as follows:

[0043] Establish the coordinate axis for the arc surface. The position of the arc surface in the three-dimensional coordinate system is as follows: Figure 2 ;

[0044] Calculate the equation of the cutting surface parallel to the latitude direction

[0045] The angle of any meridian dividing line is θ1, θ1=(n i -n / 2)*90 / n, any latitude cutting surface is connected with the center of the sphere, and the angle between the formed cone and the equatorial plane is θ2, θ2=(m i -m / 2)*90 / m, then the height of the cutting plane can be expressed as h=r*sinθ2, and the radius of the cutting circle is: r'=r*sinθ2, where the subscripts i and j are constants and r is the radius of the sphere.

[0046] Then the coordinate equation of any intersection point on the arc surface is:

[0047] Among them, k1 = tanθ1, r' = r*sinθ2;

[0048] Solve x, y, z to get (m+1)*(n+1) vertex coordinates, calculate the distance between the four adjacent coordinates, and you can get the module size.

[0049] Implementation method 2: This implementation method further limits the screen segmentation method provided in implementation method 1, wherein n=m.

[0050] Implementation method three: This implementation method further limits the screen segmentation method provided in implementation method one, wherein n>m.

[0051] Implementation 4: This implementation further limits the screen segmentation method provided in Implementation 1. <m。

[0052] Implementation mode 5: This implementation mode further limits the screen segmentation method provided in implementation mode 1, and each of the small units meets a preset size.

[0053] Implementation method 6: This implementation method further limits the screen segmentation method provided in implementation method 1. On each of the arc surfaces, all the small units are distributed in a centrally symmetrical manner.

[0054] Embodiment 7: This embodiment further limits the screen segmentation method provided in embodiment 1. Among the six identical curved surfaces, on the figure where one of the curved surfaces is located, the straight line where the non-diagonal symmetry axis is located is parallel to the meridian.

[0055] Embodiment 8: This embodiment further limits the screen segmentation method provided in embodiment 1, and the spherical screen is a small-pitch LED spherical screen.

[0056] Embodiment 9: This embodiment provides a spherical screen, which is formed by splicing n*m small units divided by the screen division method provided in embodiment 1.

[0057] Specific:

[0058] First, each arc is evenly divided using longitude and latitude. This means cutting on each arc along the longitude and latitude of the sphere. The direction of the latitude ensures that the module size is a processable size, while the direction of the longitude ensures that the modules in each latitude band are congruent trapezoids. There may be slight differences in different longitude bands. This step will divide each arc into multiple small units.

[0059] For each arc surface, parallel cutting with equal arc center angle is performed along the latitude direction, and uniform division of 90° is performed along the meridian direction. Assuming that the arc surface needs to be divided into m*n small units according to the module size requirements, then each module occupies 90 / m° along the latitude direction and 90 / n° along the meridian direction.

[0060] The two adjacent longitudes and latitudes are used together to divide the required modules. The four lines intersect to form the four vertices of the module, and the detailed size of the module is obtained by solving the lengths of the four sides.

[0061] Through the above steps, you can divide the sphere into six identical arcs, and get n*m small units on each arc, where the graphics corresponding to the edges of the small units can include trapezoids with arc edges and triangles with arc edges. This division method can realize the design of spherical screens and provide specific size and shape details for production.

[0062] Embodiment 10: This embodiment further limits the spherical screen provided in embodiment 9, and the spherical screen is a small-pitch LED spherical screen.

Claims

1. A screen segmentation method, applied to a spherical screen, characterized in that: The method comprises: The step of dividing the spherical surface where the spherical screen is located into six identical arc surfaces; The step of cutting each of the arc surfaces along the longitude and latitude lines of the sphere where the arc surface is located to form n*m small units; The figures where the edges of the small unit are located include a trapezoid with arc edges and a triangle with arc edges.

2. The screen segmentation method according to claim 1, characterized in that: Said n=m.

3. The screen segmentation method according to claim 1, characterized in that: Said n>m.

4. The screen segmentation method according to claim 1, characterized in that: The <m。 5. The screen segmentation method according to claim 1, characterized in that: Each of the small units meets a preset size.

6. The screen segmentation method according to claim 1, characterized in that: On each of the arc surfaces, all the small units are distributed in a centrally symmetrical manner.

7. The screen segmentation method according to claim 1, characterized in that: Among the six identical curved surfaces, on the figure where one of the curved surfaces is located, the straight line where the non-diagonal symmetry axis is located is parallel to the meridian.

8. The screen segmentation method according to claim 1, characterized in that: The spherical screen is a small-pitch LED spherical screen.

9. Spherical screen, characterized in that: The spherical screen is formed by splicing n*m small units divided by the screen division method of claim 1.

10. The spherical screen according to claim 9, characterized in that: The spherical screen is a small-pitch LED spherical screen.

Images