Holographic video display method, holographic video display device, and video data creation method

Abstract

To provide a holographic video display device in which the visibility of displayed text and images is improved and are made to look three-dimensional.SOLUTION: A holographic video display method includes: a step for reading, from a storage medium, video data composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular or a spherical region, with the plurality of images moving along the surface of the annular or the spherical region; and a step for changing the luminance of a plurality of light sources on the basis of the video data so as to display a holographic video based on the video data in a holographic video display device. In the plurality of image data, the color of a first image among a plurality of images and the color of a second image at a position point symmetrical to the first image with respect to the center of the annular or the spherical region are different from each other.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a holographic video display method, a holographic video display device, video data, and a video data creation method.

Background Art

[0002] Conventionally, a device for displaying a holographic video has been known. Patent Documents 1 and 2 disclose a holographic display fan having a blade provided with an LED light strip and a base provided with a motor 200 to which the blade is rotatably connected.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] When a video in which a character string or an image rotates in an annular or spherical shape is displayed on a holographic video display device, the character string or the image appears to move three-dimensionally in an annular or spherical shape. Therefore, it is suitable for displaying a character string or an image that is intended to attract people's attention like an advertisement. However, if the characters or images displayed in front of the ring or sphere and the characters or images displayed behind the ring or sphere have the same color, it is impossible to distinguish between the front characters and the back characters, and the problem that they do not appear three-dimensional has occurred.

[0005] Therefore, the present invention has been made in view of these points, and an object thereof is to improve the visibility of characters or images displayed on a holographic video display device and make them appear three-dimensional.

Means for Solving the Problems

[0006] The holographic video display method according to the first aspect of the present invention is a method of displaying a holographic video using a holographic video display device having a rotatable blade on which a plurality of light sources of three or more colors are arranged. The method is composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region, and reads, from a storage medium, video data in which the plurality of images move along the surface of the annular region or the spherical region. In the holographic video display device, a step of displaying a holographic video based on the video data by changing the luminance of the plurality of light sources based on the video data. In the plurality of image data, the color of a first image among the plurality of images and the color of a second image located at a point-symmetric position with respect to the center of the annular region or the spherical region and the first image are different from each other.

[0007] The color of the first image and the color of the second image may be in a complementary color relationship with each other. The first image may include a plurality of colors, and the second image may include a plurality of colors different from the plurality of colors included in the first image.

[0008] In the step of displaying the holographic video, the first image and the second image may be displayed in a state where the first image and the second image overlap.

[0009] In the step of displaying the holographic video, among the first image and the second image, the image on the front side of the annular region or the spherical region may be displayed larger than the image on the back side.

[0010] The holographic video display device according to the second aspect of the present invention includes a rotatable blade on which a plurality of light sources of three or more colors are arranged, and a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region. Based on video data in which the plurality of images move along the surface of the annular region or the spherical region, a processor that changes the brightness of the plurality of light sources, and a motor that rotates the blade while the processor changes the brightness of the plurality of light sources. Among the plurality of image data, the color of a first image among the plurality of images and the color of a second image that is point-symmetric to the first image with respect to the center of the annular region or the spherical region are different from each other.

[0011] The video data according to the third aspect of the present invention is video data used to display a holographic video using a holographic video display device having a rotatable blade on which a plurality of light sources of three or more colors are arranged. The video data is composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region. Among the plurality of image data, the color of a first image among the plurality of images and the color of a second image that is point-symmetric to the first image with respect to the center of the annular region or the spherical region are different from each other.

[0012] The method for creating video data according to the fourth aspect of the present invention is a method for creating video data used to display a holographic video using a holographic video display device having a rotatable blade on which a plurality of light sources of three or more colors are arranged, which is executed by a computer. The video data is composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region. The plurality of image data is created such that the color of a first image among the plurality of images and the color of a second image that is point-symmetric to the first image with respect to the center of the annular region or the spherical region are different from each other.

Advantages of the Invention

[0013] According to the present invention, the visibility of characters or images displayed on the holographic video display device is improved, and the effect that they appear three-dimensional is achieved.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0015] [Configuration of the holographic video display device S] FIG. 1 is a diagram showing the configuration of the holographic video display device S. FIG. 2 is a diagram showing the configuration of the fixing part 2. FIG. 2(a) is a front view of the fixing part 2. FIG. 2(b) is a side view of the fixing part 2. FIG. 2(c) is a top view of the fixing part 2. FIG. 3 is a functional configuration diagram of the holographic video display device S.

[0016] The holographic video display device S includes a holographic display fan 1 and a fixing part 2. The fixing part 2 functions as a container for housing the holographic display fan 1. The rear surface 21, which is the side surface of the holographic display fan 1, of the fixing part 2 is black. By having the fixing part 2 with the black rear surface 21, the holographic video display device S can make the video displayed by the light source unit 100 arranged on the blade 11 easier to view.

[0017] The holographic display fan 1 has a blade 11 and a base 12. The side of the base 12 opposite to the side where the blade 11 is provided is fixed to the rear surface 21. A transparent plate may be provided in front of (the front side) the holographic display fan 1.

[0018] The blade 11 rotates about the base 12 as the rotation axis. A light source unit 100 is linearly arranged on the blade 11. The light source unit 100 includes a plurality of LEDs (Light Emitting Diodes) which are a plurality of light sources with, for example, three or more different colors (for example, red, green, blue) arranged in order. Specifically, in the light source unit 100, sets of LEDs of a plurality of different colors, such as red, green, blue, red, green, blue, red, ···, are arranged at different positions in the longitudinal direction of the blade 11. Also, an insertion port (not shown) into which an SD card storing video data to be displayed is inserted is provided on the blade 11.

[0019] The blade 11 has a first blade 112 and a second blade 113. The first blade 112 and the second blade 113 are coupled to the rotation axis of a motor 200 provided in the base 12.

[0020] The base 12 has a motor 200 shown in FIG. 3 and a control board 300. The control board 300 has a memory 310 and a processor 320. The motor 200 rotates the blade 11 while the processor 320 changes the brightness of a plurality of light sources.

[0021] The memory 310 has a ROM (Read Only Memory) that stores the programs executed by the processor 320, and a RAM (Random Access Memory) that the processor 320 uses as a work memory. The processor 320 is, for example, a CPU (Central Processing Unit), and by executing the programs stored in the memory 310, while rotating the motor 200, it switches the lighting state and the extinguishing state of the plurality of LEDs included in the light source unit 100 based on the video data to display a holographic video.

[0022] [Method for Displaying a Holographic Video] Hereinafter, the details of a method for displaying a holographic video using a holographic video display device S having a rotatable blade on which a plurality of light sources of three or more colors are arranged, which is executed by the processor 320, will be described.

[0023] The processor 320 executes a step of reading video data in which a plurality of images move along the surface of an annular region or a spherical region from a storage medium. The video data is composed of a plurality of image data in which a plurality of images are arranged on the surface of the annular region or the spherical region, and in the plurality of image data, the color of the first image among the plurality of images and the color of the second image at a position point-symmetric to the first image with respect to the center of the annular region or the spherical region are different from each other. The processor 320 reads, for example, the video data stored in the SD card attached to the blade 11. The processor 320 may read the video data stored in an external device.

[0024] Subsequently, the processor 320 executes a step of displaying a holographic image based on the video data by changing the luminance of a plurality of light sources based on the video data. In the step of displaying the holographic image, the processor 320 sequentially switches and displays a plurality of image data so that the positions of the plurality of images change. Then, the processor 320 displays the first image and the second image among the plurality of images in a state where the first image and the second image that is point-symmetric to the first image with respect to the center of the annular region or the spherical region overlap, so that for a person viewing the holographic image display device S, the plurality of images arranged on the surface of the ring or the sphere appear to rotate about the center of the ring or the sphere as the center of rotation.

[0025] FIG. 4 is a diagram showing an example of a plurality of image data used by the processor 320 to display a holographic image. In FIG. 4, an example of a plurality of image data in which a plurality of images are arranged on the surface of an annular region is shown. The plurality of image data shown in FIG. 4 includes the eight characters "High-precision checker" arranged in an annular shape. FIG. 4 shows three image data that change in the order of FIG. 4(a) → FIG. 4(b) → FIG. 4(c), but between FIG. 4(a) and FIG. 4(b) and between FIG. 4(b) and FIG. 4(c), there are also included a plurality of image data in which the positions of a plurality of images (characters) are slightly different. As the image data changes in the order of FIG. 4(a) → FIG. 4(b) → FIG. 4(c) over time, to a person viewing the holographic image display device S, the character string appears to rotate in a circular shape.

[0026] However, if the colors of the characters displayed in the foreground (for example, "Jing" in FIG. 4(a)) and the characters displayed in the background (for example, the horizontally reversed characters of "Ka" in FIG. 4(a)) are the same, the foreground characters and the background characters will appear to be integrated, making it difficult to distinguish the characters and also making it difficult to see the character string as if it is rotating in a circular shape.

[0027] Therefore, in the multiple image data displayed by the processor 320, the color of the first image among the multiple images is different from the color of the second image located at a point symmetrical position to the first image with respect to the center of the annular or spherical region. In the example of FIG. 4(a), the color of the character "精" is different from the color of the character "か". In the example of FIG. 4(b), the color of the character "度" is different from the color of the character "ー". In the example of FIG. 4(c), the color of the character "ェ" is different from the color of the character "高". In this way, since the colors of the multiple images located at a point symmetrical position with respect to the center of the annular or spherical region are different, the multiple images are not integrated, so that a person who views the holographic image display device S can distinguish the multiple images (e.g., characters) and the multiple images appear to rotate in a circular ring shape.

[0028] In order to improve the discrimination of the multiple images located at point symmetric positions with respect to the center of the toric or spherical region, the colors of the first image and the second image may be complementary to each other. The complementary relationship is a relationship in which the colors are located on opposite sides of the color wheel, and may be a physical complementary relationship or a psychological complementary relationship.

[0029] As an example, in the example of FIG. 4(a), the character "精" is red and the character "か" is cyan. In the example of FIG. 4(b), the character "度" is magenta and the character "ー" is green. In this way, it is desirable that the colors of adjacent images among the multiple images are not complementary colors but similar to each other. By configuring the image data in this way, even if there is an area where the foreground image partially overlaps with an image adjacent to another image that is point-symmetrical with respect to the center of the circular or spherical area, the discernibility of the area is not reduced.

[0030] Each of the multiple images included in the image data may contain multiple colors. Specifically, the first image may contain multiple colors, and the second image may contain multiple colors different from the multiple colors included in the first image. As an example, the character "精" in FIG. 4 is colored so that it changes from red to magenta from left to right, and the character "か" is colored so that it changes from cyan to green from left to right. By configuring the image data in this way, the multiple images appear to rotate in a circular or spherical shape while gradually changing color, improving the visual effect.

[0031] In order to make the multiple images arranged in a circular or spherical shape appear more three-dimensional, the processor 320 may display the image on the front side of the circular or spherical area of ​​the first and second images larger than the image on the back side in the step of displaying the holographic video. In the example shown in Fig. 4(a), the character "精" is larger than the character "か", and in the example shown in Fig. 4(b), the character "度" is larger than the character "ー".

[0032] [How to create video data] The image data described above can be created using a computer. As an example, by executing a program for creating image data, the computer executes a method for creating image data used to display a holographic image using a holographic image display device having a rotatable blade on which a plurality of light sources of three or more colors are arranged.

[0033] As described above, the video data is composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region. The computer creates the video data by creating a plurality of image data such that the color of the first image among the plurality of images is different from the color of the second image located at a point-symmetric position to the first image with respect to the center of the annular region or the spherical region. The computer inputs the video data to the holographic video display device S via a communication medium or a storage medium, enabling the holographic video display device S to display a hologram video.

[0034] [Effect by Holographic Video Display Device S] As described above, the holographic video display device S is composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region. It has a processor 320 that changes the brightness of a plurality of light sources based on video data in which the plurality of images move along the surface of the annular region or the spherical region, and a motor 200 that rotates the blade 11 while the processor 320 changes the brightness of the plurality of light sources. In the plurality of image data, the color of the first image among the plurality of images is different from the color of the second image located at a point-symmetric position to the first image with respect to the center of the annular region or the spherical region.

[0035] When the holographic video display device S displays such video data, a person viewing the holographic video display device S can distinguish between the front image and the rear image while seeing a stereoscopic video in which a plurality of images arranged in an annular or spherical shape rotate around the center of the circle or the sphere, thus enhancing the visual effect. In particular, when the plurality of images are character images, the front and rear characters can be distinguished, making it easier for a person viewing the holographic video display device S to grasp the content of the character string. Therefore, when the holographic video display device S is installed at an exhibition or a store to display advertising characters, the advertising effect is enhanced.

[0036] As described above, the present invention has been explained using embodiments. However, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist. For example, all or part of the device can be functionally or physically distributed and integrated in any unit. Also, new embodiments resulting from any combination of a plurality of embodiments are included in the embodiments of the present invention. The effects of the new embodiments resulting from the combination have the effects of the original embodiments combined.

Explanation of Reference Numerals

[0037] 1 Holographic display fan 2 Fixing part 11 Blade 12 Base 21 Rear surface 100 Light source unit 112 First blade 113 Second blade 200 Motor 300 Control board 310 Memory 320 Processor

Claims

1. A method for displaying a holographic image using a holographic image display device having a rotatable blade on which a plurality of light sources of three or more colors are arranged, comprising: reading, from a storage medium, video data composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region, and the plurality of images move along the surface of the annular region or the spherical region; displaying, in the holographic image display device, a holographic image based on the video data by changing the brightness of the plurality of light sources based on the video data; and in the plurality of image data, a color of a first image among the plurality of images and a color of a second image at a position point-symmetrical to the first image with respect to the center of the annular region or the spherical region are different from each other. A holographic image display method.

2. The holographic image display method according to claim 1, wherein the color of the first image and the color of the second image are in a complementary color relationship with each other. The holographic image display method according to claim 1.

3. The holographic image display method according to claim 1 or 2, wherein the first image includes a plurality of colors, and the second image includes a plurality of colors different from the plurality of colors included in the first image. The holographic image display method according to claim 1 or 2.

4. The holographic image display method according to claim 1 or 2, wherein, in the step of displaying the holographic image, the first image and the second image are displayed in a state where they overlap. The holographic image display method according to claim 1 or 2.

5. The holographic image display method according to claim 1 or 2, wherein, in the step of displaying the holographic image, among the first image and the second image, an image on the front side of the annular region or the spherical region is displayed larger than an image on the back side. The holographic image display method according to claim 1 or 2.

6. A rotatable blade on which a plurality of light sources of three or more colors are arranged; a processor that changes the brightness of the plurality of light sources based on video data composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region, and the plurality of images move along the surface of the annular region or the spherical region; a motor that rotates the blade while the processor changes the brightness of the plurality of light sources; and Among the plurality of image data, the color of the first image among the plurality of images is different from the color of the second image that is in a position point-symmetrical to the first image with respect to the center of the annular region or the spherical region. Holographic video display device.

7. Video data used for displaying a holographic video using a holographic video display device having a rotatable blade on which a plurality of light sources of three or more colors are arranged. The video data is composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region. Among the plurality of image data, the color of the first image among the plurality of images is different from the color of the second image that is in a position point-symmetrical to the first image with respect to the center of the annular region or the spherical region.

8. A method for creating video data used for displaying a holographic video using a holographic video display device having a rotatable blade on which a plurality of light sources of three or more colors are arranged, which is executed by a computer. The video data is composed of a plurality of image data in which a plurality of images are arranged on the surface of an annular region or a spherical region. The plurality of image data is created such that the color of the first image among the plurality of images is different from the color of the second image that is in a position point-symmetrical to the first image with respect to the center of the annular region or the spherical region. Video data creation method.

Images