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

Abstract

The present invention improves the visibility of characters or images displayed by a holographic video display device according to the present invention to cause the characters or images to look stereoscopic. A holographic video display method according to the present invention comprises: a step for reading, from a storage medium, video data configured from multiple image data in which multiple images are disposed on the surface of an annular region or a spherical region, the multiple images moving along the surface of the annular region or the spherical region; and a step for displaying a holographic video based on the video data by changing the brightness of a plurality of light sources on the basis of the video data in a holographic video display device. In the multiple image data, the color of a first image among the multiple images and the color of a second image located 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.

Description

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

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

[0002] Conventionally, devices for displaying holographic images have been known. Patent Documents 1 and 2 disclose a holographic display fan having blades on which LED light strips are provided and a base on which a motor 200 to which the blades are rotatably connected is provided.

[0003] Utility Model Registration No. 3220306 Patent No. 6866528

[0004] When a holographic image display device displays an image of a character string or image rotating in a circular or spherical shape, the character string or image appears to move three-dimensionally in a circular or spherical shape, making it suitable for displaying character strings or images that you want to attract people's attention, such as in advertisements. However, if the character or image displayed in front of the ring or sphere and the character or image displayed behind the ring or sphere are the same color, it becomes difficult to distinguish between the character in front and the character in the back, and the three-dimensional appearance is lost.

[0005] The present invention has been made in consideration of these points, and aims to improve the visibility of characters or images displayed on a holographic image display device, making them appear three-dimensional.

[0006] A first aspect of the holographic image display method of the present invention is 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, the method comprising the steps of: reading from a storage medium image data in which a plurality of images are arranged on the surface of a circular or spherical region, the plurality of images moving along the surface of the circular or spherical region; and displaying a holographic image based on the image data in the holographic image display device by changing the brightness of the plurality of light sources based on the image data, wherein 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 point-symmetrically to the first image with respect to the center of the circular or spherical region are different from each other.

[0007] The colors of the first image and the second image may be complementary to 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 are superimposed on each other.

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

[0010] A second aspect of the holographic image display device of the present invention is composed of 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 a circular or spherical region, and includes a processor that changes the brightness of the plurality of light sources based on the image data in which the plurality of images move along the surface of the circular or spherical region, and a motor that rotates the blade while the processor is changing the brightness of the plurality of light sources, and in 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 located point-symmetrically to the first image with respect to the center of the circular or spherical region are different from each other.

[0011] The video data of a third aspect of the present invention is video 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, and the video data is composed of a plurality of image data in which a plurality of images are arranged on the surface of a circular or spherical region, and in the plurality of image data, the color of a first image among the plurality of images is different from the color of a second image that is positioned point-symmetrically to the first image with respect to the center of the circular or spherical region.

[0012] A fourth aspect of the present invention provides a method for creating video data, which is executed by a computer and is used to display holographic images using a holographic image display device having a rotatable blade on which are arranged a plurality of light sources of more than one color, wherein the video data is composed of a plurality of image data in which a plurality of images are arranged on the surface of a circular or spherical region, and the method creates the plurality of image data so that the color of a first image among the plurality of images is different from the color of a second image that is positioned point-symmetrically to the first image with respect to the center of the circular or spherical region.

[0013] According to the present invention, the visibility of characters or images displayed on a holographic image display device is improved, and the characters or images appear three-dimensional.

[0014] 1 is a diagram showing the configuration of the holographic image display device S. FIG. 2 is a diagram showing the configuration of a fixed unit 2. FIG. 3 is a diagram showing the functional configuration of the holographic image display device S. FIG. 4 is a diagram showing an example of a plurality of image data used by a processor 320 to display a holographic image.

[0015] [Configuration of Holographic Image Display Device S] Fig. 1 is a diagram showing the configuration of the holographic image display device S. Fig. 2 is a diagram showing the configuration of the fixed unit 2. Fig. 2(a) is a front view of the fixed unit 2. Fig. 2(b) is a side view of the fixed unit 2. Fig. 2(c) is a top view of the fixed unit 2. Fig. 3 is a functional configuration diagram of the holographic image display device S.

[0016] The holographic image display device S has a holographic display fan 1 and a fixed part 2. The fixed part 2 functions as a container that houses the holographic display fan 1. The fixed part 2 has a black rear surface 21, which is the surface that faces the holographic display fan 1. By having the fixed part 2 with a black rear surface 21, the holographic image display device S can make the image displayed by the light source unit 100 arranged on the blade 11 easier to see.

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

[0018] The blade 11 rotates around the base 12 as a rotation axis. A light source unit 100 is arranged linearly on the blade 11. The light source unit 100 includes a plurality of LEDs (Light Emitting Diodes) that are a plurality of light sources, for example, three or more different colors (e.g., red, green, and blue) arranged in order. Specifically, in the light source unit 100, sets of LEDs 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. The blade 11 also has an insertion slot (not shown) into which an SD card storing video data to be displayed is inserted.

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

[0020] The base 12 has a motor 200 and a control board 300 shown in Fig. 3. 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 the multiple light sources.

[0021] The memory 310 has a ROM (Read Only Memory) that stores programs executed by the processor 320, and a RAM (Random Access Memory) that is used as a work memory by the processor 320. The processor 320 is, for example, a CPU (Central Processing Unit), and executes the programs stored in the memory 310 to rotate the motor 200 and display a holographic image by switching the on and off states of the multiple LEDs of the light source unit 100 based on the image data.

[0022] [Method for Displaying Holographic Images] The following describes in detail a method for displaying holographic images using a holographic image display device S having rotatable blades on which multiple light sources of three or more colors are arranged, which is executed by the processor 320.

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

[0024] Next, processor 320 executes a step of displaying a holographic image based on the image data by changing the brightness of the plurality of light sources based on the image data. In the step of displaying the holographic image, processor 320 sequentially switches and displays the plurality of image data so that the positions of the plurality of images change. Processor 320 then displays the first and second images in a state in which a first image of the plurality of images is superimposed on a second image that is positioned point-symmetric to the first image with respect to the center of the annular or spherical region. This makes it appear to a viewer of holographic image display device S that the plurality of images arranged on the surface of the annular or spherical surface are rotating around the center of the annular or spherical surface.

[0025] FIG. 4 is a diagram showing an example of a plurality of image data used by the processor 320 to display a holographic video. 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). However, 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 time passes, as the image data changes in the order of FIG. 4(a) → FIG. 4(b) → FIG. 4(c), to a person viewing the holographic video display device S, the character string appears to rotate in an annular shape.

[0026] However, if the colors of the characters displayed in the front (for example, "精" in FIG. 4(a)) and the characters displayed in the back (for example, the horizontally reversed character of "カ" in FIG. 4(a)) are the same, the front and back characters will appear to be integrated, making it difficult to distinguish the characters and also making it difficult to see the character string as rotating in an annular shape.

[0027] Therefore, in the plurality of image data displayed by the processor 320, the color of the first image among the plurality of images and the color of the 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. In the example of FIG. 4(a), the color of the character "精" and the color of the character "カ" are different. In the example of FIG. 4(b), the color of the character "度" and the color of the character "ー" are different. In the example of FIG. 4(c), the color of the character "ェ" and the color of the character "高" are different. Thus, since the colors of the plurality of images at positions point-symmetrical to the center of the annular region or the spherical region are different, the plurality of images do not integrate, so that a person viewing the holographic video display device S can distinguish the plurality of images (for example, characters), and the plurality of images appear to rotate in an annular shape.

[0028] In order to improve the discriminability of a plurality of images located at positions point-symmetric with respect to the center of an annular region or a spherical region, the color of the first image and the color of the second image may be complementary to each other. The complementary relationship is a relationship located on the opposite side of the hue circle, 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 "カ" is cyan. In the example of FIG. 4(b), the character "度" is magenta and the character "ー" is green. Thus, among the plurality of images, it is desirable that the colors of adjacent images are not in a complementary relationship but are similar to each other. Since the image data is configured in this way, even if there is a region where the front image partially overlaps with an image adjacent to another image located at a position point-symmetric with respect to the center of the annular region or the spherical region, the discriminability of the region does not decrease.

[0030] Each of the plurality of images included in the image data may include a plurality of colors. Specifically, 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. As an example, in FIG. 4, the character "精" is colored so as to change from red to magenta from left to right, and the character "カ" is colored so as to change from cyan to green from left to right. Since the image data is configured in this way, it seems that a plurality of images arranged in an annular or spherical shape rotate while gradually changing their colors, so the visual effect is improved.

[0031] In order for a plurality of images arranged in an annular or spherical shape to appear more three-dimensional, in the step of displaying a holographic video, the processor 320 may display the image on the front side of the annular region or the spherical region among the first image and the second image larger than the image on the back side. In the example shown in FIG. 4(a), the character "精" is larger than the character "カ", and in the example shown in FIG. 4(b), the character "度" is larger than the character "ー".

[0032] [Method for Creating Image Data] The above-described image data 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 rotatable blades on which multiple light sources of three or more colors are arranged.

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

[0034] [Effects of Holographic Image Display Device S] As described above, holographic image display device S is composed of a plurality of image data sets in which a plurality of images are arranged on the surface of a circular or spherical region, and includes processor 320 that changes the luminance of a plurality of light sources based on the image data in which the plurality of images move along the surface of the circular or spherical region, and motor 200 that rotates blade 11 while processor 320 is changing the luminance of the plurality of light sources. In the plurality of image data sets, a first image among the plurality of images has a different color from a second image that is positioned point-symmetric to the first image with respect to the center of the circular or spherical region.

[0035] By displaying such image data on the holographic image display device S, viewers of the holographic image display device S can distinguish between images in the foreground and background while viewing a three-dimensional image in which multiple images arranged in a circular or spherical shape rotate around the center of the circle or sphere, thereby enhancing the visual effect. In particular, if the multiple images are text images, viewers of the holographic image display device S can easily grasp the content of the text because they can distinguish between the text in the foreground and the text in the background, thereby enhancing the advertising effect when the holographic image display device S is installed at an exhibition or in a store to display advertising text.

[0036] The present invention has been described above using embodiments, but 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 of the present invention. For example, all or part of the device can be configured by functionally or physically distributing or integrating in any unit. Furthermore, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effects of the new embodiments resulting from the combination also have the effects of the original embodiments.

[0037] REFERENCE SIGNS LIST 1 holographic display fan 2 fixing portion 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, the method 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, the plurality of images moving along the surface of the annular region or the spherical region; and in the holographic image display device, displaying a holographic image 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 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. 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.

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.

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.

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, the image on the front side of the annular region or the spherical region is displayed larger than the image on the back side.

6. A rotatable blade having a plurality of light sources of three or more colors, a processor configured from 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 changing the luminance of the 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 that rotates the blade while the processor changes the luminance of the plurality of light sources. 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 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. A holographic video display device.

7. A method for creating video data used for displaying a holographic video using a holographic video display device having a rotatable blade with a plurality of light sources of three or more colors, 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, and 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 located 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. A video data creation method.

Images