Display medium, processing device, program, and storage medium

Abstract

A display medium (1) is provided with a first layer (L1) having a blue region (B) in each of a plurality of cells (C), and a second layer (L2) having a red region (R) and a green region (G) in each of the plurality of cells (C). When viewed from a predetermined direction, the red region (R) and the green region (G) of the second cell (C2) are each disposed adjacent to the blue region (B) of the first cell (C1) in the predetermined direction. A display medium (1) displays first content through a red region (R), a green region (G), and a blue region (B) for a first viewpoint located in a predetermined direction, and displays second content through the red region (R) for a second viewpoint located in a direction in which the green region (G) and the blue region (B) overlap. A third content is displayed through the green region (G) for a third viewpoint located in the direction in which the red region (R) and the blue region (B) overlap.

Description

Technical Field

[0001] The present invention relates to a display medium, a processing device, a program, and a storage medium. Background Art

[0002] Humans perceive color through three types of cells that perceive color, namely red cones, green cones, and blue cones. On the other hand, minority color vision characteristics sometimes occur due to the lack or dysfunction of a cone. Generally, minority color vision characteristics have difficulty recognizing red and / or green. For example, when there is green text on a red background, or red text on a green background, minority color vision characteristics sometimes cannot recognize the text at all.

[0003] In view of such a situation, universal design is becoming popular, which uses colors that are easy to see regardless of whether or not there are minority color vision characteristics. In universal design, there are some indicators such as not using red and green that are difficult for people with minority color vision characteristics to see clearly.

[0004] In addition, display media that display different contents in a plurality of directions are known (see Patent Documents 1 to 3).

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent No. 6374625

[0008] Patent Document 2: Japanese Patent No. 6758447

[0009] Patent Document 3: Japanese Patent No. 6764990 Summary of the invention

[0010] Problems to be solved by the invention

[0011] However, in universal design, since available colors are limited, it is not possible to express content using any color.

[0012] If you want to express content using arbitrary colors, it will be difficult for people with color vision characteristics to see clearly, so it is considered to record the content expressed in arbitrary colors for healthy people and the content expressed in colors suitable for people with color vision characteristics. However, in order to change the color difference, a large space is required to record the content with the same connotation together.

[0013] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technology that can save space and display content that is easy to see for both healthy people and those with a small number of color vision characteristics.

[0014] Solutions to Solve Problems

[0015] A display medium according to one embodiment of the present invention relates to a display medium that displays content that can be visually recognized by healthy people and a minority of people who retain color vision characteristics. The display medium comprises: a first layer, which is formed of a transparent member and has a plurality of cells, each of which has a blue area; and a second layer, which is formed of a transparent member and has a plurality of cells, each of which has a red area and a green area, wherein when a first cell of the first layer and a second cell of the second layer corresponding to the first cell of the first layer overlap, the red area and the green area of ​​the second cell are respectively arranged to be adjacent to the blue area of ​​the first cell in the predetermined direction. The display device displays the first content through the red area, the green area, and the blue area for a first viewpoint located in the predetermined direction, displays the second content through the red area for a second viewpoint located in a direction in which the green area and the blue area overlap, and displays the third content through the green area for a third viewpoint located in a direction in which the red area and the blue area overlap.

[0016] A processing device according to one embodiment of the present invention relates to a processing device for assigning colors to pixels of the first cell and the second layer of the display medium. The blue area of ​​the first cell, the red area of ​​the second cell, and the green area of ​​the second cell each have a plurality of pixels, and the processing device comprises: a calculation unit that calculates the values ​​of red, green, and blue of the colors displayed by the first cell and the second cell in the first content; and an assignment unit that assigns red, green, or blue to the number of pixels corresponding to the calculated values ​​of red, green, and blue among the plurality of pixels in each area, and assigns colors other than red, green, and blue to the remaining pixels.

[0017] One aspect of the present invention is a program for causing a computer to function as the above-mentioned processing device.

[0018] Effects of the Invention

[0019] According to the present invention, it is possible to provide a technology that can save space and display content that is easy to see for both healthy people and those with a small number of color vision characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of the display medium according to the first embodiment.

[0021] Figure 2 It is a perspective view of the display medium according to the first embodiment.

[0022] Figure 3 It is a side view of the unit cell of the first embodiment.

[0023] Figure 4 1 is a first top view of a color region of a pair of cells according to the first embodiment.

[0024] Figure 5 1 is a second top view of the color region of the pair of cells of the first embodiment.

[0025] Figure 6 This is a diagram for explaining functional blocks of a processing device that generates output data for manufacturing the display medium according to the first embodiment.

[0026] Figure 7 This is a flowchart for explaining the process of determining the color to be assigned to the display medium according to the first embodiment.

[0027] Figure 8 It is a side view of the unit cell of the second embodiment.

[0028] Fig. 9 It is a top view of the color area of ​​the pair of cells according to the second embodiment.

[0029] Fig.10 This is a flowchart for explaining the process of determining the color to be assigned to the display medium according to the second embodiment.

[0030] Fig.11 It is a perspective view of a display medium according to a third embodiment.

[0031] Fig.12 It is a diagram for explaining an example of a cell of a display medium according to the third embodiment.

[0032] Fig.13 This is a diagram for explaining an example of shielded pixels and exposed pixels in the display medium according to the third embodiment.

[0033] Fig.14 This is a diagram for explaining functional blocks of a processing device that generates output data for manufacturing a display medium according to the third embodiment.

[0034] Fig.15 It is a perspective view of a display medium according to a fourth embodiment.

[0035] Fig.16 (a) is a front view of a partition plate used in a display medium according to a fourth embodiment, Fig.16 (b) is the right side view.

[0036] Fig.17 It is a cross-sectional view of a spacer used in a display medium according to a fourth embodiment.

[0037] Fig.18 It is a diagram for explaining the hardware configuration of a computer used for the processing device. DETAILED DESCRIPTION

[0038] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the description of the drawings, the same reference numerals are given to the same parts, and the description thereof will be omitted.

[0039] (Display medium)

[0040] The display medium according to the embodiment of the present invention displays content that can be visually recognized by a healthy person and a person with a color vision characteristic minority. The display medium displays content that can be visually recognized by a healthy person and a person with a color vision characteristic minority in different directions.

[0041] A minority color vision trait holder is a person who sees or perceives colors differently from the majority of normal people, and is sometimes referred to as color blindness, color weakness, or color abnormality in medicine. Most people have three types of cones for perceiving colors. A minority color vision trait holder has different color vision characteristics from the majority of other people due to the lack of a specific cone or multiple cones among the three types.

[0042] The content displayed by the display medium according to the embodiment of the present invention is expressed by the color of each of the plurality of pixels given to the display medium.

[0043] A first content that can be expressed by three primary colors (RGB) is displayed by pixels that can be seen from a first viewpoint among the plurality of pixels. A second content obtained by extracting the red component of the first content is displayed by pixels that can be seen from a second viewpoint among the plurality of pixels. A third content obtained by extracting the green component of the first content is displayed by pixels that can be seen from a third viewpoint among the plurality of pixels.

[0044] A healthy person visually confirms the first content. Furthermore, a person who has a green cone deficiency or a red cone deficiency and retains the color vision characteristic changes the viewpoint and repeatedly observes the second content and the third content, respectively. Thus, the display medium of the embodiment of the present invention allows not only a healthy person but also a person who has a color vision characteristic to visually confirm the composition of the content.

[0045] The processing device for manufacturing the display medium according to the embodiment of the present invention specifies the color to be given to each pixel of the display medium as output data to be input to a manufacturing device for manufacturing the display medium, such as a printer.

[0046] Here, the display medium according to the embodiment of the present invention includes a plurality of cells, and each cell includes a plurality of pixels.

[0047] The processing device includes a calculation unit and an allocation unit.

[0048] The calculation unit calculates respective values ​​of red, green, and blue of a color displayed by a predetermined cell in the first content that can be expressed by the three primary colors of red, green, and blue.

[0049] The allocating unit allocates a color to each pixel within a predetermined cell so that the color of each value of red, green, and blue is displayed through the pixel within the predetermined cell that can be seen from the first viewpoint, the color of the value of red is displayed through the pixel within the predetermined cell that can be seen from the second viewpoint, and the color of the value of green is displayed through the pixel within the predetermined cell that can be seen from the above-mentioned third viewpoint.

[0050] The inventors have found that although it is difficult for people with minority color vision characteristics to recognize colors, they can understand the contents by understanding the composition of the contents by viewing a plurality of contents with different color differences. In addition, the inventors have found that there are many types of minority color vision characteristics, but most people with minority color vision characteristics can understand the composition of the contents by displaying red-based contents and green-based contents.

[0051] Therefore, the display medium can display three different contents in three directions, so that the content that is easy for healthy people to visually confirm is displayed in a certain direction, and the content of the red system and the content of the green system whose composition can be grasped by a small number of people who maintain color vision characteristics are displayed in the other two directions. The content that is easy for healthy people to visually confirm is the content formed by RGB. The content of the red system is the content that extracts the red component from the content formed by RGB and expresses it with the shades of red. The content of the green system is the content that extracts the green component from the content formed by RGB and expresses it with the shades of green. In addition, the content of the red system or the content of the green system may not change the red or green of the three primary colors of color itself, but change the hue, brightness or chroma, etc.

[0052] A small number of people who maintain color vision characteristics switch the direction of visual confirmation of the display medium, or switch the direction of the display medium and repeatedly observe the content of the red system and the content of the green system in sequence. This allows them to grasp the composition of the content, specifically, the switching part of the shade, based on the shade of red or green.

[0053] Such a display medium saves space and can display content that is easy for healthy people and a small number of people who retain color vision characteristics to see clearly.

[0054] In addition, the red system content and the green system content displayed by the display medium are generated by extracting each color component from the content formed by RGB, so the composition of the content is expressed at the same position of the display medium. By switching the direction of visually checking the display medium or switching the direction of the display medium, the shades of red or green can be visually checked at the same position, so the composition of the content can be understood in combination with the residual image of the shades of red or the residual image of the shades of green.

[0055] In addition, as a specific example of a display medium that saves space and displays content that is easy for healthy people and a small number of people who retain color vision characteristics to see clearly, as described in the embodiments of the present invention, it is described in the first to fourth embodiments. Here, the display medium is described by four embodiments, but it is not limited to this. In a display medium that can display different content in different directions, content formed by RGB (red, green, and blue) that is easy for healthy people to see clearly, content of the red system generated by the R (red) component, and content of the green system generated by the G (green) component can be displayed.

[0056] (First Embodiment)

[0057] The display medium 1 according to the first embodiment will be described. The display medium 1 according to the first embodiment has the structure of the display medium described in Patent Document 2.

[0058] like Figure 1 As shown, the display medium 1 has a first layer L1 and a second layer L2. Figure 1 and Figure 2 As shown, the first layer L1 and the second layer L2 are formed along the XY plane and are arranged in parallel in the Z-axis direction. The display medium 1 displays a plurality of contents corresponding to a plurality of directions based on the portions of the light from a plurality of directions passing through the first layer L1 and the second layer L2, respectively. At each viewpoint provided at a position where the light from a plurality of directions passing through the first layer L1 and the second layer L2 is incident, the respective contents can be visually confirmed. The display medium 1 displays a plurality of contents by making the combination of the color of the portion of the light incident on the viewpoint passing through the first layer L1 and the color of the portion passing through the second layer L2 different according to the direction of the light. The display medium 1 displays contents at three different viewpoints above the first layer L1 and the second layer L2 in the X-axis direction.

[0059] In the first embodiment, the viewpoint for visually recognizing each of the plurality of contents is set above the first layer L1 and the second layer L2 in the Z-axis direction. By shifting the viewpoint in the X-axis direction, the user can sequentially visually recognize the plurality of contents.

[0060] In the first embodiment, the light of a predetermined direction used when displaying content is emitted from a direction opposite to the viewpoint at least with respect to the first layer L1 and the second layer L2. When the viewpoint is located above the first layer L1 and the second layer L2 in the Z-axis direction, the light can be emitted from below the first layer L1 and the second layer L2 in the Z-axis direction, and the position of the light source is not limited. The light directed upward from below the second layer L2 in the Z-axis direction may be, for example, light from a light source located at an arbitrary position after being reflected by the substrate M, or may be light from a light source located in the substrate M.

[0061] like Figure 1As shown, a transparent layer N is formed between the first layer L1 and the second layer L2. In addition, a substrate M is provided in a direction opposite to the second layer L2 and the transparent layer N in the Z-axis direction. In the Z-axis direction, the substrate M, the second layer L2, the transparent layer N, and the first layer L1 are stacked in this order to form the display medium 1.

[0062] The transparent layer N is preferably formed of a material that does not absorb the color component of light and allows more light to pass through. The transparent layer N is formed of a transparent material such as water or transparent plastic. The transparent layer N can also be formed of air. In other words, the first layer L1 and the second layer L2 can be separated by a predetermined distance and arranged in parallel. The substrate M is formed of a member such as a mirror or white paper that allows easy visual confirmation of the color given to the first layer L1 and the second layer L2.

[0063] like Figure 1 and Figure 2 As shown, the first layer L1 and the second layer L2 are respectively formed of transparent members and have a plurality of cells C. The position of the cell C can be specified by a printer or the like that assigns a color to the color area of ​​the cell C according to the definition of the predetermined cell position, and the position of the cell C may or may not be visually confirmed. For example, there may be no clear line, partition, depression or other separator between adjacent cells C, and the cells C may not be physically separated. In addition, at the boundary between two adjacent cells C, the ends of the two cells may be assigned the same color or the same colorless color, and the cells C may not be visually confirmed.

[0064] In the first embodiment, each cell C of the first layer L1 and each cell C of the second layer L2 are formed by dividing each layer in the same manner. Each cell C of the first layer L1 is formed at a position offset from each cell C of the second layer L2 in the Z-axis direction. More specifically, as Figure 2 As shown, in the embodiment of the present invention, the first cell C1 of the first layer L1 is formed at a position offset from the second cell C2 of the second layer L2 in the Z-axis direction. The same applies to other cells. In the first embodiment, the relationship between cells formed at positions offset in the Z-axis direction such as the first cell C1 and the second cell C2 is called "correspondence".

[0065] like Figure 1 to Figure 3 As shown, the first layer L1 is formed of a transparent member, and has a plurality of cells C, and each of the plurality of cells C has a blue region B. The second layer L2 is formed of a transparent member, and has a plurality of cells C, and each of the plurality of cells C has a red region R and a green region G. In the first embodiment, the case where the blue region B, the red region R, and the green region G have the same shape is described.

[0066] Reference Figure 3. The pair of corresponding cells C is described. In the first embodiment, a transparent area is provided at each boundary portion of the first cell C1 and the second cell C2, and a color area is provided at the inner portion than the transparent area. By providing the transparent area, it is possible to form a structure in which light passing through the color area does not pass through the color area of ​​the adjacent cell, thereby reducing the burden of calculating the color assigned to each pixel. The color area is formed by applying ink to each layer. The ink can be a dye ink or a pigment ink. In addition, Figure 3 The unhatched portion is a transparent portion to which no ink is applied.

[0067] The positions of the first cell C1 and the second cell C2 are set so that the light passing through the color area of ​​the first cell C1 passes through the second cell C2, and the light passing through the color area of ​​the second cell C2 passes through the first cell C1. In the first embodiment, the case where the pair of corresponding cells C is offset in the Z-axis direction is described, but the present invention is not limited thereto. The pair of corresponding cells C may also be offset in an oblique direction, specifically, not only in the Z-axis direction but also in the X-axis direction.

[0068] In the first embodiment, when a state in which a first cell C1 of the first layer L1 and a second cell C2 of the second layer L2 corresponding to the first cell C1 of the first layer L1 overlap is visually confirmed from a predetermined direction, a red area R and a green area G of the second cell C2 are respectively configured to be adjacent to a blue area B of the first cell C1 in the predetermined direction.

[0069] The first cell C1 of the first layer L1 has a blue area B in the center. The second cell C2 of the second layer L2 has a red area R and a green area G on the left and right, respectively, sandwiching an area corresponding to the blue area B. When the first cell C1 of the first layer L1 and the second cell C2 of the second layer L2 are overlapped from directly above (above in the Z-axis direction), as shown in FIG. Figure 4 As shown in (a), the red region R, the blue region B, and the green region G are arranged in a row from the left. The right end of the red region R is connected to the left end of the blue region B. The right end of the blue region B is connected to the left end of the green region G.

[0070] In the first embodiment, the red region R is provided on the left side and the green region G is provided on the right side of the blue region B, but the present invention is not limited thereto. Alternatively, the green region G may be provided on the left side and the red region R may be provided on the right side of the blue region B.

[0071] like Figure 3As shown in (a), the viewpoint located in the first direction D1 where the red area R and the green area G visually recognized as the second cell C2 are adjacent to the blue area B of the first cell C1, specifically, the position directly above the display medium 1 is set as the first viewpoint. The user can visually recognize the blue area B, the red area R, and the green area G from the first viewpoint. The display medium 1 displays the first content through the red area R, the green area G, and the blue area B at the first viewpoint. The display medium 1 can display the content represented by the three primary colors of RGB (Red: Red, Green: Green, Blue: Blue) light at the top.

[0072] like Figure 3 As shown in (b), the viewpoint in the second direction D2 where the green area G of the second cell C2 and the blue area B of the first cell C1 overlap, specifically, the position obliquely above the left side of the display medium 1 is set as the second viewpoint. The user can visually confirm the red area R from the second viewpoint. The green area G is covered by the blue area B. The overlapping area of ​​the blue area B and the green area G absorbs all the colors of red, green and blue and displays black, so the user cannot visually confirm the blue area B and the green area G. The display medium 1 displays the second content through the red area R at the second viewpoint.

[0073] like Figure 3 As shown in (c), the viewpoint in the third direction D3 where the red area R of the second cell C2 overlaps with the blue area B of the first cell C1, specifically, the position diagonally above and to the right of the display medium 1 is set as the third viewpoint. The user can visually confirm the green area G from the third viewpoint. The red area R is covered by the blue area B. The overlapping area of ​​the blue area B and the red area R absorbs all the colors of red, green and blue and displays black, so the user cannot visually confirm the blue area B and the red area R. The display medium 1 displays the third content through the green area G at the third viewpoint.

[0074] In addition, the first viewpoint, the second viewpoint, and the third viewpoint are preferably located at the same distance from the display medium 1 in the Z-axis direction and at different positions in the X-axis direction.

[0075] Next, a method for expressing the color to be expressed by the correspondence between the first cell C1 and the second cell C2 in each color area is described. The blue area B of the first cell C1, the red area R of the second cell C2, and the green area G of the second cell C2 each have a plurality of pixels. In the first embodiment, the blue area B, the red area R, and the green area G each have a plurality of pixels of the same number and shape. In the first embodiment, the concentration of the color is expressed by the number of pixels colored with the color of the area among the plurality of pixels. The blue color assigned to the blue area B of the first cell C1, the red color assigned to the red area R of the second cell C2, and the green color assigned to the green area G of the second cell C2 may be the three primary colors of blue, red, and green, or may be a color in which the hue, lightness, or chroma of these colors are changed.

[0076] The values ​​when the colors corresponding to the colors displayed by the first cell C1 and the second cell C2 are decomposed into the three primary colors of RGB light are calculated. The number of pixels corresponding to the respective values ​​of red, green, and blue of the colors displayed by the first cell C1 and the second cell C2 in the plurality of pixels in each area is colored red, green, or blue, respectively, and the other pixels are colored black.

[0077] For example, Figure 4 and Figure 5 As shown, when each color region is represented by 12 pixels, each color region is represented by 13 grayscales of 0 to 12 pixels according to the number of pixels to be colored. The color represented by the correspondence between the first cell C1 and the second cell C2 is represented by 256 grayscales of 0 to 255.

[0078] Figure 4 (a) shows the case where RGB=(255, 255, 255). Figure 4 In (a), each pixel in each color area is colored with the color of the color area. The 12 pixels in the blue area B are colored blue. The 12 pixels in the red area R are colored red. The 12 pixels in the green area G are colored green.

[0079] Figure 4 (b) shows the case where RGB=(255, 0, 255). Figure 4 In (b), the color that should be expressed by the green area G disappears, and each pixel of the blue area B and the red area R is colored with the color of the color area. The 12 pixels of the blue area B are colored blue, the 12 pixels of the red area R are colored red, and the 12 pixels of the green area G are colored black.

[0080] Figure 5(a) to (c) respectively represent the case where RGB = (127, 127, 127). In this case, half of each color region is colored with the color of the region, and the remaining half is colored black. In the first embodiment, the colored region may be determined in any manner.

[0081] Figure 5 (a) Set the black area to a checkerboard pattern. Figure 5 (b) Set the black area to half of the Y direction. Figure 5 (c) The black area is set as a row of each area in the X direction. Figure 5 In the example of FIG. 1 , the black area of ​​each color area is set in the same manner, but the present invention is not limited to this. For example, the blue area B may be set as Figure 5 (a), the red area R is Figure 5 (b) is set up like this, the green area is Figure 5 (c) The black areas are arranged in any combination, etc. In addition, the black areas are not required to have regularity and can be arranged randomly.

[0082] In addition, in the first embodiment, the case where pixels that are not colored red, green, or blue are colored black is described, but the present invention is not limited thereto. It is sufficient if pixels that are not colored red, green, or blue are colored with a color other than red, green, and blue (a color that is neither blue, red, nor green).

[0083] The display medium 1 displays the content expressed by the red area R and the content expressed by the green area G in addition to the content expressed by the blue area B, the red area R, and the green area G. A healthy person visually confirms the content expressed by the blue area B, the red area R, and the green area G. A minority of people who have green cone deficiency or red cone deficiency and retain the color vision characteristics change their viewpoints and repeatedly observe the second content expressed by the red area R and the third content expressed by the green area G, thereby being able to confirm the composition of the content.

[0084] In the first embodiment, a minority of color vision characteristic maintainers alternately changes the viewpoint of the display medium 1 between a viewpoint at which the second content can be seen and a viewpoint at which the third content can be seen. Specifically, the viewpoint is changed from the upper left direction to the upper right direction relative to the display medium 1, thereby being able to identify the composition based on the shades of the composition of the red area R and the green area G.

[0085] (Processing device)

[0086] Reference Figure 6, the processing device 10 for determining the color to be given to the display medium 1 is described. The processing device 10 includes data of input image data 11, cell color data 12, and output data 13, and functions of a calculation unit 16 and an allocation unit 17. Each data is stored in a storage device such as a memory 902 or a storage 903. Each function is installed in the CPU 901.

[0087] The input image data 11 is an image of the content displayed by the display medium 1. The input image data 11 includes a plurality of pixels, and a predetermined color is associated with each pixel.

[0088] The cell color data 12 is data on the color to be expressed by each cell included in the display medium 1 .

[0089] The output data 13 is data for establishing a correspondence between the value of the color printed on each layer and its position when the display medium 1 is formed by the manufacturing device. For each pair of cells, the output data 13 establishes a correspondence between a blue pixel and a black pixel in the first cell C1 of the pair, and establishes a correspondence between a red pixel, a green pixel, and a black pixel in the second cell C2.

[0090] The calculation unit 16 calculates the red, green, and blue (RGB) values ​​of the color displayed by the first cell C1 and the second cell C2 of a certain cell pair in the first content expressed by RGB. The calculation unit 16 calculates the RGB value corresponding to the position of the pair of processing objects in the input image data 11 as the RGB value of the color displayed by the first cell C1 and the second cell C2 of the pair. The calculation unit 16 calculates the RGB value for each cell pair and outputs it to the cell color data 12.

[0091] The allocating unit 17 determines the allocation of pixels of each color to each of the blue area B, the red area R, and the green area G for each pair of cells, and outputs the decision to the output data 13. For the pair of cells to be processed, the allocating unit 17 allocates red to the number of pixels corresponding to the calculated red value among the plurality of pixels in the red area R, and allocates black to the other pixels. The allocating unit 17 allocates green to the number of pixels corresponding to the calculated green value among the plurality of pixels in the green area G, and allocates black to the other pixels. The allocating unit 17 allocates blue to the number of pixels corresponding to the calculated blue value among the plurality of pixels in the blue area B, and allocates black to the other pixels.

[0092] The calculation unit 16 calculates the pair of cells to be processed as BRG=(150, 50, 100). Here, each value of RGB is an integer between 0 and 255, and the red region R, the green region G, and the blue region B are each formed by 12 pixels.

[0093] The number corresponding to the blue value, specifically, the number of pixels allocated to blue in the blue area B is the value of the level corresponding to the blue value when the range of values ​​0 to 255 that the blue value can take is divided into levels according to the number of pixels in the blue area B, 12+1.

[0094] The value of B, 150, divided by the grayscale number 256, is 0.58. The value obtained by multiplying the grayscale number 13 that can be expressed by the pixels in the blue area B by the value 0.58 is 7.54. Therefore, the allocating unit 17 allocates red to eight of the 12 pixels in the blue area B and allocates black to the other four pixels. In addition, the present invention rounds off the decimal point to an integer.

[0095] The number corresponding to the value of red, specifically, the number of pixels allocated to red in the red area R is the value of the level corresponding to the value of red when the range of values ​​0 to 255 that the value of red can take is divided into levels according to the number of pixels 12+1 in the red area R.

[0096] The value of R, 50, divided by the grayscale number 256, is 0.19. The value obtained by multiplying the grayscale number 13 that can be expressed by the pixels in the red area R by the value 0.19 is 2.47. Therefore, the allocating unit 17 allocates red to two of the 12 pixels in the red area R and allocates black to the remaining ten pixels.

[0097] The number corresponding to the green value, specifically, the number of pixels allocated to green in the green area G is the value of the level corresponding to the green value when the range of values ​​0 to 255 that the green value can take is divided into levels according to the number of pixels 12+1 in the green area G.

[0098] The value of G, 100, divided by the grayscale number 256, is 0.39. The value obtained by multiplying the grayscale number 13 that can be expressed by the pixels of the green area G by the value 0.39 is 4.68. Therefore, the allocating unit 17 allocates red to five of the 12 pixels in the green area G and allocates black to the remaining seven pixels.

[0099] In addition, the blue area B is colored with eight pixels, the red area R is colored with two pixels, the green area G is colored with five pixels, and the remaining pixels are colored black, so that the ratio of blue, red and green is 8:2:5. The ratio of blue, red and green is close to the ratio of BRG calculated from the input image data 11, which is 150:50:100.

[0100] When the allocation unit 17 determines the number of pixels to be allocated to red, green or blue for a pair of cells to be processed, it determines which pixels are to be colored with the color of the region. The allocation unit 17 determines the pixels to be allocated with the color of the region randomly or according to a predetermined rule based on the shape of each region. The allocation unit 17 specifies the pixels to be colored with the color of each region for each pair of cells, and generates output data 13.

[0101] Reference Figure 7 , the following processing is described: with respect to a pair of predetermined target cells, blue, red, green, or black is assigned to each pixel in the blue region B, the red region R, and the green region G.

[0102] First, in step S101, the processing device 10 acquires pixel values ​​at positions of pairs of cells to be processed from the input image data 11. In step S102, the processing device 10 decomposes the pixel values ​​acquired in step S101 into RGB values.

[0103] In step S103, the processing device 10 determines the number of pixels to be painted blue in the blue area B based on the ratio of the B value to the maximum value of the B value. In step S104, the processing device 10 assigns blue to the number of pixels determined in step S103 among the pixels in the blue area B, and assigns black to the remaining pixels.

[0104] In step S105, the processing device 10 determines the number of pixels to be painted red in the red region R based on the ratio of the R value to the maximum value of the R value. In step S106, the processing device 10 assigns red to the number of pixels determined in step S105 among the pixels in the red region R, and assigns black to the remaining pixels.

[0105] In step S106, the processing device 10 determines the number of pixels to be painted green in the green area G based on the ratio of the G value to the maximum value of the G value. In step S107, the processing device 10 assigns green to the number of pixels determined in step S106 among the pixels in the green area G, and assigns black to the remaining pixels.

[0106] The processing device 10 repeats the process for each cell pair. Figure 7 The processing shown in the figure is performed, and the correspondence between the pixel and the color in each pair is output to the output data 13. The output data 13 is input to a manufacturing device such as a printing press, thereby outputting the first layer L1 and the second layer L2 colored with the color suitable for each pixel. The display medium 1 is formed by the substrate M, the second layer L2 and the third layer.

[0107] The display medium 1 of the first embodiment saves space and can display content that is easy for healthy people and a small number of people who retain color vision characteristics to see clearly.

[0108] (Second Embodiment)

[0109] The display medium 1 of the second embodiment has the structure of the display medium described in Patent Document 2, similarly to the display medium 1 of the first embodiment.

[0110] In the first embodiment, the case where the display medium 1 is produced using a printer or the like is described. In the first embodiment, the permeability of the ink is not limited, and both dye ink and pigment ink can be used. In the second embodiment, the display medium 1 is described in the case where an ink having no permeability such as a pigment ink is used. Since the pigment ink has no permeability, the colored portion of the first layer L1 can be arranged so as to overlap the colored portion of the second layer L2.

[0111] The first cell C1 of the first layer L1 has a blue region B in the center. The second cell C2 of the second layer L2 has a red region R and a green region G so as to overlap with the blue region B. In the second embodiment, the blue region B overlaps with the red region R on the left side of the center, and overlaps with the green region G on the right side of the center. A portion of the right side of the red region R overlaps with the blue region B. A portion of the left side of the green region overlaps with the blue region B. In the second embodiment, the red region R and the green region G of the second layer L2 are formed to be wider (wider in the X direction) than the blue region B of the first layer L1.

[0112] Fig. 9 (a) Description of the colored portions of the first layer L1 and the second layer L2. Fig. 9 In FIG. 1 , the upper layer represents the blue region of the first layer L1 , and the lower layer represents the red region R and the green region G of the second layer L2 . The dashed line connecting the upper layer and the lower layer represents the corresponding positions of the color regions when the first layer L1 and the second layer are superimposed.

[0113] like Fig. 9 As shown in (a), the blue area B has 6 pixels * 2 columns = 12 pixels, and the red area R and the green area G each have 6 pixels * 3 columns = 18 pixels. The rightmost column of the red area R overlaps with the left column of the blue area B. The leftmost column of the green area G overlaps with the right column of the green area G.

[0114] In the second embodiment, the red region R is provided on the left side and the green region G is provided on the right side of the blue region B, but the invention is not limited thereto. Alternatively, the green region G may be provided on the left side and the red region R may be provided on the right side of the blue region B.

[0115] like Figure 8As shown in (a), the viewpoint in the first direction D1, where the red area R and the green area G visually recognized as the second cell C2 are respectively adjacent to the blue area B of the first cell C1, specifically, the position directly above the display medium 1 is set as the first viewpoint. The user can visually recognize the blue area B, the red area R, and the green area G from the first viewpoint. The left end of the blue area B is located in the center of the red area R in the left-right direction. The right end of the blue area B is located in the center of the green area G in the left-right direction.

[0116] The display medium 1 displays first content at a first viewpoint through a red area R, a green area G, and a blue area B. The display medium 1 can display content represented by three primary colors of RGB (Red, Green, Blue) light.

[0117] like Figure 8 As shown in (b), a viewpoint located in the second direction D2 where the green area G of the second cell C2 and the blue area B of the first cell C1 overlap, specifically, a position diagonally upper left of the display medium 1 is set as the second viewpoint. The user can visually confirm the red area R and the blue area B from the second viewpoint. The green area G is covered by the blue area B, so the user cannot visually confirm the green area G. The display medium 1 displays the second content through the red area R and the blue area B at the second viewpoint. However, a small number of people with specific color vision cannot react to the blue area B, so they visually confirm the second content displayed through the red area R.

[0118] like Figure 8 As shown in (c), a viewpoint located in the third direction D3 where the red area R of the second cell C2 and the blue area B of the first cell C1 overlap, specifically, a position diagonally upper right of the display medium 1 is set as a third viewpoint. The user can visually confirm the green area G and the blue area B from the third viewpoint. The red area R is covered by the blue area B, so the user cannot visually confirm the red area R. The display medium 1 displays the third content through the green area G and the blue area B at the third viewpoint. However, a small number of people with specific color vision cannot react to the blue area B, so they visually confirm the third content displayed through the green area G.

[0119] In the display medium 1 of the second embodiment, similarly to the display medium 1 of the first embodiment, space can be saved and content that is easy to see for both healthy people and a small number of people who retain color vision characteristics can be displayed.

[0120] In the first embodiment, from Figure 3In the second and third viewpoints shown in (b) and (c), the blue area B overlaps with the green area G, or the blue area B overlaps with the red area R. In the first embodiment, the blue area B, the red area R, and the green area G have the same shape, so the viewpoint where they overlap is a limited range in the X direction, and the position where the content of the appropriate red system or the content of the green system can be seen is narrowed.

[0121] In contrast, in the second embodiment, the red area R and the green area G are wider than the blue area B, so the range where the blue area B and the green area G, or the blue area B and the red area R overlap is a wide range in the X-axis direction, and the position where the content of the appropriate red system or the content of the green system can be seen becomes wider. For example, the viewpoint in the direction where the two columns of the blue area B overlap with the two columns on the left or the two columns on the right among the three columns of the red area R is the second viewpoint. Similarly, the viewpoint in the direction where the two columns of the blue area B overlap with the two columns on the left or the two columns on the right among the three columns of the green area G is the third viewpoint.

[0122] Therefore, the display medium 1 of the second embodiment makes it easier to adjust the positions of red-based content and green-based content than the display medium 1 of the first embodiment, and it is expected that the burden on people with a small number of color vision characteristics can be reduced.

[0123] In the second embodiment, the number of pixels colored blue, red, or green, or the number of pixels colored black in each area is calculated in the same manner as in the first embodiment. However, in the second embodiment, the red area R or the green area G overlapping the blue area B at the second viewpoint or the third viewpoint is variable. In each column in the direction (Y-axis direction) orthogonal to the direction of viewpoint movement (X-axis direction), the ratio of pixels assigned to each color of blue, red, or green to pixels assigned to black must be the same. The direction of line of sight movement is the direction connecting the second viewpoint for observing the content of the red system for a minority of color vision characteristic holders and the second viewpoint for observing the content of the green system.

[0124] Fig. 9 (b) to (c) respectively represent the case where RGB = (127, 127, 127). In this case, in each color area, half is colored with the color of the area, and the remaining half is colored black. However, in the second embodiment, in each column, the ratio of pixels assigned to each color and pixels assigned to black is the same. As long as the ratio of these pixels is the same, any setting is acceptable. For example, the blue area B may be as follows: Fig. 9 (a), the red area R and the green area G are as follows Fig. 9 (c) The black areas are arranged in any combination, etc. In addition, the black areas are not required to be regular and can be arranged randomly.

[0125] However, it is not allowed to Figure 5 As shown in (c), in each column in the Y-axis direction, there is an unevenness in the number of pixels assigned to color and the number of pixels assigned to black. This is because, when observing from the second viewpoint, the lightness and darkness of the content of the red system changes depending on the position of the viewpoint. Similarly, when observing from the third viewpoint, the lightness and darkness of the content of the green system changes depending on the position of the viewpoint.

[0126] The processing device 10 for determining the color to be given to the display medium 1 according to the second embodiment and the reference Figure 6 However, the difference is that the allocating unit 17 makes the ratio of pixels allocated to blue, red or green and pixels allocated to black equal in each column in the direction (Y-axis direction) orthogonal to the direction (X-axis direction) of viewpoint movement.

[0127] Reference Fig.10 , the following processing is described: with respect to a pair of predetermined target cells, blue, red, green, or black is assigned to each pixel in the blue region B, the red region R, and the green region G.

[0128] The processing of step S201 and step S202 is Figure 6 Step S101 is the same as step S102.

[0129] In step S203, the processing device 10 determines the number of pixels to be painted blue in the blue area B based on the ratio of the B value to the maximum value of the B value. In step S204, the processing device 10 assigns blue to the number of pixels determined in step S203 among the pixels in the blue area B, and assigns black to the remaining pixels. At this time, the processing device 10 assigns blue to the same number of pixels in each pixel group in a direction orthogonal to the direction of changing the viewpoint, and assigns black to the remaining pixels.

[0130] In step S205, the processing device 10 determines the number of pixels to be painted red in the red region R based on the ratio of the R value to the maximum value of the R value. In step S206, the processing device 10 assigns red to the number of pixels determined in step S205 among the pixels in the red region R, and assigns black to the remaining pixels. At this time, the processing device 10 assigns red to the same number of pixels in each pixel group in a direction orthogonal to the direction of changing the viewpoint, and assigns black to the remaining pixels.

[0131] In step S206, the processing device 10 determines the number of pixels to be painted green in the green region G based on the ratio of the G value to the maximum value of the G value. In step S207, the processing device 10 assigns green to the number of pixels determined in step S206 among the pixels in the green region G, and assigns black to the remaining pixels. At this time, the processing device 10 assigns green to the same number of pixels in each pixel group in a direction orthogonal to the direction of changing the viewpoint, and assigns black to the remaining pixels.

[0132] The processing device 10 repeats each cell Figure 7 The processing shown in the figure is performed, and the correspondence between the pixel and the color in each pair is output to the output data 13. The output data 13 is input to a manufacturing device such as a printing machine, thereby outputting the first layer L1 and the second layer L2 colored with colors suitable for each pixel. At this time, the printing machine prints a predetermined color on the first layer L1 and the second layer L2 using an ink with no permeability such as a pigment ink. The display medium is formed by the substrate M, the second layer L2 and the third layer.

[0133] The display medium 1 of the second embodiment saves space and can display content that is easy for healthy people and a small number of people who maintain color vision characteristics to see clearly. In addition, compared with the display medium 1 of the first embodiment, the display medium 1 of the second embodiment can display a wider range of red system content or green system content, so the burden of adjusting the user's viewpoint is reduced.

[0134] (Third Embodiment)

[0135] In the first and second embodiments, a case where a display medium is formed using the technology described in Patent Document 2 is described. In the third embodiment, a case where a display medium 100 is formed using the technology described in Patent Document 1 is described.

[0136] The display medium 100 of the third embodiment displays content that can be visually recognized by healthy people and a minority of people who retain color vision characteristics. The display medium 100 displays three contents corresponding to three azimuth angles from predetermined elevation angles and azimuth angles.

[0137] like Fig.11 As shown, the display medium 100 includes a substrate 101 and a coloring portion 102 that expresses the color of the content on the upper surface of the substrate 101. The substrate 101 has a surface that reflects light. The substrate 101 can be in the form of a thin sheet such as paper or in a three-dimensional shape. The upper surface of the substrate 101 can be a flat surface or a curved surface.

[0138] The upper surface of the substrate 101 is divided into a plurality of cells C. The plurality of cells may be arranged adjacent to each other or may be arranged separately from each other. Fig.12As shown, the plurality of cells C are divided into three sub-cells K0, K1 and K2 corresponding to the three azimuth angles. Sub-cell K0 corresponds to azimuth angle φ0. Sub-cell K1 corresponds to azimuth angle φ1. Sub-cell K2 corresponds to azimuth angle φ2.

[0139] Protruding parts T0, T1 and T2 are formed on each of the sub-cells K0, K1 and K2 corresponding to a predetermined azimuth angle. The protruding part T0 is formed on the sub-cell K0. The protruding part T1 is formed on the sub-cell K1. The protruding part T2 is formed on the sub-cell K2.

[0140] The protruding members T0, T1, and T2 are formed of a member that shields light. The protruding members T0, T1, and T2 have planes in a predetermined azimuth direction, more specifically, planes parallel to the azimuth corresponding to the sub-cells forming the protruding members.

[0141] From a predetermined elevation angle and an azimuth angle, the colored portion of the sub-cell corresponding to the predetermined azimuth angle is observed.

[0142] For example, when the user observes the coordinate x on the display medium 100 at a predetermined elevation angle ω0 and an azimuth angle φ0, the user can confirm the color value of the coordinate of the first content corresponding to the coordinate x on the display medium 100. Similarly, when the user observes the coordinate x on the display medium 100 at a predetermined elevation angle ω1 and an azimuth angle φ1, the user can confirm the color value of the coordinate of the second content corresponding to the coordinate x on the display medium 100. Furthermore, when the user observes the coordinate x on the display medium 100 at a predetermined elevation angle ω2 and an azimuth angle φ2, the user can confirm the color value of the coordinate of the third content corresponding to the coordinate x on the display medium 100.

[0143] In the third embodiment, the first content is displayed at azimuth angle φ0, the second content is displayed at azimuth angle φ1, and the third content is displayed at azimuth angle φ2, but the present invention is not limited thereto. The correspondence between the azimuth angle and the displayed content is determined as appropriate.

[0144] Reference Fig.12 , describing the cell C of coordinate x. The cell C includes a sub-cell K0, a sub-cell K1, and a sub-cell K2. The sub-cell K0 is provided with three protruding parts T0 parallel to the direction of the azimuth angle φ0. The sub-cell K1 is provided with two protruding parts T1 parallel to the direction of the azimuth angle φ1. The sub-cell K2 is provided with three protruding parts T2 parallel to the direction of the azimuth angle φ2.

[0145] The protruding member T has a predetermined height, so when the display medium 1 is observed from a certain elevation angle, a portion shielded by the protruding member T and a portion not shielded are generated. When the user observes from the azimuth angle φ0, the user can visually confirm the colored portion 102 of the subcell K0 formed with the protruding member T0 parallel to the azimuth angle φ0, and it is difficult to visually confirm the colored portion 102 of the other subcells K1 or K2. When the user observes from the azimuth angle φ1, the user can visually confirm the colored portion 102 of the subcell K1 formed with the protruding member T1 parallel to the azimuth angle φ1, and it is difficult to visually confirm the colored portion 102 of the other subcells K0 or K2. When the user observes from the azimuth angle φ2, the user can visually confirm the colored portion 102 of the subcell K2 formed with the protruding member T2 parallel to the azimuth angle φ2, and it is difficult to visually confirm the colored portion 102 of the other subcells K0 or K1.

[0146] The display medium 100 of the third embodiment can display three contents in three directions. The display medium 100 can display a first content that can be expressed by the three primary colors of red, green and blue at a first viewpoint at an azimuth angle φ0. The display medium 100 can display a second content obtained by extracting the red component of the first content at a second viewpoint at an azimuth angle φ1. The display medium 100 can display a third content obtained by extracting the green component of the first content at a third viewpoint at an azimuth angle φ2.

[0147] Furthermore, in the third embodiment, ideally, when the user observes from a predetermined azimuth angle, he or she can confirm each pixel of the colored portion 102 of the sub-cell corresponding to the azimuth angle, and cannot confirm each pixel of the colored portion 102 of the sub-cell that does not correspond to the azimuth angle, but this is not always the case.

[0148] like Fig.13 As shown, consider the case where a protruding part T1 is formed in the sub-cell K1. When the user observes from the ω1 direction parallel to the protruding part T1, almost all the pixels in the sub-cell K1 can be confirmed. However, a shielded portion K1a is formed in the sub-cell K1 as a pixel that cannot be observed. In addition, an exposed portion K2b as a pixel that is observed is sometimes formed in the sub-cell K2 that does not correspond to the azimuth angle φ1. Therefore, in the processing of the allocation unit 117 described later, a pixel group that can be seen is specified for each viewpoint, and a color is allocated in a manner that is displayed at the viewpoint by the specified pixel group.

[0149] Next, the processing device 110 for assigning colors to each pixel of the display medium 100 will be described.

[0150] like Fig.14As shown, the processing device 110 includes input image data 111, condition data 112, shape data 113, cell color data 114, and output data 115, and functions of a calculation unit 116 and an allocation unit 117. Each data is stored in a storage device such as a memory 902 or a storage 903. Each function is installed in the CPU 901.

[0151] Input image data 111, cell color data 114 and output data 115 are Figure 6 The input image data 11, cell color data 12 and output data 13 are the same as those of the calculation unit 116. Figure 6 The processing of the calculation unit 16 is the same.

[0152] The condition data 112 is data for specifying the azimuth and elevation of the content displayed on the display medium 100. The shape data 113 is data for specifying the position and height of the protruding member arranged in each sub-cell of the display medium 100.

[0153] The allocating unit 117 allocates colors to each pixel in the processing target cell so that the pixels in the processing target cell that can be seen from the first viewpoint display colors of red, green, and blue, the pixels in the processing target cell that can be seen from the second viewpoint display colors of red, and the pixels in the processing target cell that can be seen from the third viewpoint display colors of green. The pixels to be allocated colors here are pixels in the processing target cell that do not form a protruding component.

[0154] The assigning unit 117 specifies the pixel group that can be seen from the first viewpoint, the pixel group that can be seen from the second viewpoint, and the pixel group that can be seen from the third viewpoint, among the pixels in the cell to be processed. Fig.13 In the example of φ1, the pixel visible when observed from the azimuth angle φ1 includes the exposed portion K2b in the sub-cell K2 and does not include the shielded portion K1a in the sub-cell K1.

[0155] The allocating unit 117 allocates colors to each pixel so that the RGB value to be expressed by the processing target cell and the red and green values ​​of the RGB value can be expressed by each pixel group. At this time, the color of each pixel can also be optimized so that the grayscale of each sub-cell is the same.

[0156] The processing device 110 repeats the process of assigning colors to each pixel for each cell, and outputs the correspondence between the pixels and the colors in each cell to the output data 115. The output data 115 is input to a manufacturing device such as a printer, thereby outputting the display medium 100 colored with a color suitable for each pixel. The printer may also be a 3D printer capable of forming a protruding member.

[0157] The display medium 100 of the third embodiment saves space similarly to the display medium 1 of the first embodiment or the second embodiment, and can display content that is easy to see for both healthy people and a small number of people who retain color vision characteristics.

[0158] (Technology A)

[0159] A display medium capable of displaying three contents corresponding to the three azimuth angles for three viewpoints corresponding to the predetermined elevation angles and the three azimuth angles, respectively, wherein:

[0160] The content displayed by the display medium is represented by the color assigned to each of the plurality of pixels.

[0161] The first content that can be represented by the three primary colors of red, green and blue is displayed by using the pixels that can be seen from the first viewpoint among the plurality of pixels.

[0162] displaying second content obtained by extracting a red component of the first content through pixels visible from a second viewpoint among the plurality of pixels,

[0163] The third content obtained by extracting the green component of the first content is displayed by using pixels that can be seen from a third viewpoint among the plurality of pixels,

[0164] A minority of people who have green cone deficiency or red cone deficiency and retain the color vision characteristic can visually confirm the composition of the content by repeatedly observing the second content and the third content from a different viewpoint.

[0165] (Technique B)

[0166] A display medium capable of displaying three contents corresponding to the three azimuth angles for a predetermined elevation angle and three azimuth angles, wherein:

[0167] A substrate having a light-reflecting property,

[0168] The substrate is divided into a plurality of cells.

[0169] Each of the plurality of cells is divided into three sub-cells corresponding to the three azimuth angles,

[0170] A protruding member having a surface oriented in the predetermined azimuth angle and shielding light is formed in each sub-cell corresponding to the predetermined azimuth angle.

[0171] The sub-cell corresponding to the predetermined azimuth angle is observed from the predetermined elevation angle and azimuth angle, and a first content that can be expressed by the three primary colors of red, green and blue is displayed by a pixel that can be seen from a first viewpoint among the plurality of pixels, a second content obtained by extracting a red component of the first content is displayed by a pixel that can be seen from a second viewpoint among the plurality of pixels, and a third content obtained by extracting a green component of the first content is displayed by a pixel that can be seen from a third viewpoint among the plurality of pixels,

[0172] A minority of people who maintain color vision characteristics change their viewpoints and repeatedly observe the second content and the third content, thereby visually confirming the composition of the content.

[0173] (Technology C)

[0174] A processing device that assigns a color to each pixel of a display medium described in technology B, wherein:

[0175] The display medium has a plurality of cells.

[0176] The processing device includes a calculation unit and an allocation unit.

[0177] The calculation unit calculates the red, green and blue values ​​of the color displayed by the predetermined cell in the first content.

[0178] The allocating unit allocates a color to each pixel in the predetermined cell so that:

[0179] The color of each value of red, green and blue is displayed by the pixels in the predetermined cell that can be seen from the first viewpoint.

[0180] The color of the red value is displayed by the pixels in the predetermined cell that can be seen from the second viewpoint, and

[0181] The color of the green value is displayed by the pixels in the predetermined cell that can be seen from the third viewpoint.

[0182] (Fourth Embodiment)

[0183] In the first and second embodiments, a case where a display medium is formed using the technique described in Patent Document 2 is described. In the fourth embodiment, a case where a display medium 200 is formed using the technique described in Patent Document 3 is described.

[0184] The display medium 200 of the fourth embodiment displays content that can be visually recognized by healthy people and a minority of people who retain color vision characteristics. The display medium 200 displays three contents corresponding to three azimuth angles from predetermined elevation angles and azimuth angles.

[0185] like Fig.15As shown, the display medium 200 includes a substrate 201. The substrate 201 may be in the form of a thin sheet such as paper, or may be in a three-dimensional shape. The upper surface of the substrate 201 may be a flat surface or a curved surface.

[0186] The upper surface of the substrate 101 is divided into a plurality of cells C. The plurality of cells may be disposed adjacent to each other or may be disposed separately from each other.

[0187] One cell C includes one partition P. The partition P is formed on a surface intersecting with the substrate 201 and has a portion exposed when the display medium 200 is viewed from three directions. The partition P has a plurality of pixels on its surface.

[0188] like Fig.16 As shown, the partition P is formed to divide the space on the cell C in three directions radially from a point on the cell C. In the fourth embodiment, the partition P divides the first viewpoint, the second viewpoint, and the third viewpoint on the X-axis above the display medium 200. The partition P can be arranged to be connected to the outer edge of the cell C and not connected to the partition of the adjacent cell. Alternatively, the partition P can also be arranged to be connected to the partition of the adjacent cell C.

[0189] The skeleton of the partition plate P is a part of the Voronoi surface in the Voronoi diagram having points virtually set in each of the three directions as generating points.

[0190] The surface of the partition plate P has a plurality of pixels. A first content that can be expressed by the three primary colors of red, green and blue is displayed by a pixel visible from a first viewpoint among the plurality of pixels. A second content obtained by extracting the red component of the first content is displayed by a pixel visible from a second viewpoint among the plurality of pixels. A third content obtained by extracting the green component of the first content is displayed by a pixel visible from a third viewpoint among the plurality of pixels.

[0191] Furthermore, the combination of viewpoints and contents displayed for the viewpoints is appropriately set. For example, contents obtained by extracting green components may be displayed by pixels visible from the second viewpoint, and contents obtained by extracting color components may be displayed by pixels visible from the third viewpoint.

[0192] A minority of people who maintain color vision characteristics can visually confirm the composition of the contents by changing the viewpoint and repeatedly viewing the second content and the third content.

[0193] Reference Fig.17 , the shape of the partition P is described. In the fourth embodiment, a Voronoi diagram is virtually formed relative to a parent point virtually set in the direction of the display content. The partition P includes the Voronoi surface in the Voronoi diagram in the skeleton. The partition P is a component formed by thickening the Voronoi surface as the skeleton. The surface of the partition P includes a surface parallel to the Voronoi surface.

[0194] exist Fig.17 In the example shown, three viewpoints E1, E2, and E3 are provided. In the line of sight when visually confirming the center Cs of the cell C from each viewpoint E1, E2, and E3, there are mother points H1, H2, and H3. The mother points H1, H2, and H3 are provided on an imaginary sphere of a predetermined radius with the center Cs of the cell C as the center.

[0195] The partition plate P has two shielding members W1 and W2. The shielding members W1 and W2 divide the space above the cell C where the partition plate P is provided into three areas.

[0196] The shielding member W1 is formed by increasing the thickness I using the Voronoi surface Q1 as a framework. The shielding member W2 is formed by increasing the thickness I using the Voronoi surface Q2 as a framework. The front end of the shielding member W1 is formed into a circular shape with a radius I.

[0197] The shielding part W1 divides the space on the cell C into a space A1 corresponding to the viewpoint E1 and a space A2 corresponding to the viewpoint E2. The shielding part W2 divides the space on the cell C into a space A2 corresponding to the viewpoint E2 and a space A3 corresponding to the viewpoint E3.

[0198] The portion of the surface of the partition plate P that is exposed when the display medium 1 is observed from a predetermined designated direction among the three directions has a portion that is shielded when the display medium 1 is observed from a direction other than the predetermined designated direction among the three designated directions. Sometimes, even if a certain pixel F on the surface of the partition plate P is exposed in one or more directions among the three directions, it cannot be seen from other designated directions. The surface of the partition plate P expresses the color of the content corresponding to the exposed direction. Thus, the display medium 1 can express a part of different content for multiple designated directions, and thus can display multiple contents with a wide color gamut and high brightness.

[0199] For example, in Fig.17 In the example shown, the surface on the space A1 side of the shielding component W1 has a portion that can be visually confirmed from the viewpoint E1 but cannot be visually confirmed from the viewpoint E2 or the viewpoint E3. The surface on the space A2 side of the shielding component W1 has a portion that can be visually confirmed from the viewpoint E2 but cannot be visually confirmed from the viewpoint E1 or the viewpoint E3. The surface on the space A2 side of the shielding component W2 has a portion that can be visually confirmed from the viewpoint E2 but cannot be visually confirmed from the viewpoint E1 or the viewpoint E3. The surface on the space A3 side of the shielding component W2 has a portion that can be visually confirmed from the viewpoint E3 but cannot be visually confirmed from the viewpoint E1 or the viewpoint E2.

[0200] Each surface of the partition plate P is formed so that it is easy to visually confirm from one of the three directions and difficult to visually confirm from the other two directions. Each surface of the partition plate P takes into account the effect of emitting a color that forms the content in one direction and the effect of shielding light in directions other than the direction. As a result, the display medium 200 can display different content in three directions. In addition, the display medium 200 can display content with a wide color gamut and high brightness in three directions. Each surface of the partition plate P suppresses the influence of sight lines from directions other than the specified direction, so that a suitable color can be given to the surface observed from the specified direction.

[0201] Next, a processing device for assigning colors to each pixel of the display medium 200 will be described. The processing device has Fig.14 The processing device 110 of the third embodiment shown has the same structure.

[0202] The condition data 112 is data specifying the direction in which the display medium 200 displays the content. The shape data 113 is data related to parameters of the partitions P of the display medium 200, specifically, the thickness I, the size of the virtual hemisphere when the Voronoi surface is cut, and the like.

[0203] The assigning unit 117 assigns colors to the pixels in the processing target cell so that the pixels in the processing target cell that can be seen from the first viewpoint display colors of red, green, and blue, the pixels in the processing target cell that can be seen from the second viewpoint display colors of red, and the pixels in the processing target cell that can be seen from the third viewpoint display colors of green. The pixels to be assigned colors here are pixels in the processing target cell that do not form a protruding member and can be seen from a certain viewpoint.

[0204] The assigning unit 117 specifies, among the pixels of the partition P in the processing target cell, a pixel group that can be seen from the first viewpoint, a pixel group that can be seen from the second viewpoint, and a pixel group that can be seen from the third viewpoint.

[0205] The assigning unit 117 assigns colors to the pixels so that the RGB values ​​to be expressed by the processing target cell and the red and green values ​​of the RGB values ​​can be expressed by each pixel group.

[0206] The processing device 110 repeats the process of assigning colors to each pixel for each cell, and outputs the correspondence between the pixels and the colors in each cell to the output data 115. By inputting the output data 115 to a manufacturing device such as a printer, the display medium 200 colored with a color suitable for each pixel is output. The printer may be a 3D printer capable of forming the partition P.

[0207] The display medium 200 of the fourth embodiment saves space similarly to the display medium 1 of the first or second embodiment, and can display content that is easy to see for both healthy people and a small number of people who retain color vision characteristics.

[0208] (Technology D)

[0209] A display medium displays three different contents in three directions respectively, wherein:

[0210] a substrate having a plurality of imaginary cells; and

[0211] a partition plate formed on a surface of the cell on a plane intersecting the substrate and having a portion exposed when the display medium is observed from three directions,

[0212] The framework of the partition includes a portion of a Voronoi surface in a Voronoi diagram having points that are virtually set in each of the plurality of directions as generatrix points,

[0213] displaying first content that can be expressed by the three primary colors of red, green and blue through pixels visible from a first viewpoint among the plurality of pixels, displaying second content obtained by extracting a red component of the first content through pixels visible from a second viewpoint among the plurality of pixels, and displaying third content obtained by extracting a green component of the first content through pixels visible from a third viewpoint among the plurality of pixels,

[0214] A minority of people who maintain color vision characteristics change their viewpoints and repeatedly observe the second content and the third content, thereby visually confirming the composition of the content.

[0215] (Technology E)

[0216] A display medium displays three different contents in three directions respectively, wherein:

[0217] a substrate having a plurality of imaginary cells; and

[0218] a partition plate formed on a surface of the cell on a plane intersecting the substrate and having a portion exposed when the display medium is observed from three directions,

[0219] The partition is arranged to be in contact with the outer edge of the cell, and the space on the cell is divided radially from the cell in the three directions.

[0220] displaying first content that can be expressed by the three primary colors of red, green and blue through pixels visible from a first viewpoint among the plurality of pixels, displaying second content obtained by extracting a red component of the first content through pixels visible from a second viewpoint among the plurality of pixels, and displaying third content obtained by extracting a green component of the first content through pixels visible from a third viewpoint among the plurality of pixels,

[0221] A minority of people who maintain color vision characteristics change their viewpoints and repeatedly observe the second content and the third content, thereby visually confirming the composition of the content.

[0222] The processing device 10 of the present embodiment described above uses, for example, a general-purpose computer system, which includes a CPU (Central Processing Unit, processor) 901, a memory 902, a storage 903 (HDD: Hard Disk Drive, SSD: Solid State Drive), a communication device 904, an input device 905, and an output device 906. In this computer system, the CPU 901 executes the program loaded on the memory 902, thereby realizing each function of the processing device 10. In addition, the processing device 110 also uses a general-purpose computer system like the processing device 10.

[0223] Furthermore, the processing device 10 may be installed in one computer or in a plurality of computers. In addition, the processing device 10 may be a virtual machine installed in a computer.

[0224] The program of the processing device 10 can be stored in a computer-readable storage medium such as an HDD, SSD, USB (Universal Serial Bus) memory, CD (Compact Disc), DVD (Digital Versatile Disc), or can be transferred via a network. The computer-readable storage medium is, for example, a non-transitory storage medium.

[0225] In addition, the present invention is not limited to the above-mentioned embodiment, and various modifications can be made within the scope of the gist of the invention.

[0226] Explanation of symbols

[0227] 1. 100. 200—display medium, 10. 110—processing device, 11. 111—input image data, 12. 114—cell color data, 13. 115—output data, 16. 116—calculation unit, 17. 117—allocation unit, 112—condition data, 113—shape data, 901—CPU, 902—memory, 903—storage, 904—communication device, 905—input device, 906—output device, A—space, B—blue area, C—cell, G—green area, H—mother point, K—sub-cell, L—layer, M—substrate, N—transparent layer, P—partition, R—red area, T—protruding part, W—shielding part, φ—azimuth angle.

Claims

1. A display medium that displays content that can be visually recognized by healthy people and a small number of people who retain color vision characteristics, characterized in that: The above-mentioned display medium has: A first layer, which is formed of a transparent member and has a plurality of cells, and each of the plurality of cells has a blue region; and The second layer is formed of a transparent member and has a plurality of cells, and each of the plurality of cells has a red area and a green area. When a state in which a first cell of the first layer and a second cell of the second layer corresponding to the first cell of the first layer overlap is visually confirmed from a predetermined direction, a red area and a green area of ​​the second cell are respectively arranged to be adjacent to a blue area of ​​the first cell in the predetermined direction. For a first viewpoint located in the predetermined direction, the first content is displayed through a red area, a green area, and a blue area. For a second viewpoint located in a direction where the green area and the blue area overlap, the second content is displayed through the red area. The third content is displayed through the green area for a third viewpoint located in a direction where the red area and the blue area overlap.

2. The display medium according to claim 1, characterized in that: The blue area of ​​the first cell, the red area of ​​the second cell, and the green area of ​​the second cell each have a plurality of pixels. Among the multiple pixels in each area, the number of pixels corresponding to the respective values ​​of red, green and blue displayed by the above-mentioned first cell and the above-mentioned second cell are colored in red, green or blue, respectively, and the other pixels are colored in colors other than red, green and blue.

3. The display medium according to claim 1, characterized in that: A minority of people who have green cone deficiency or red cone deficiency and retain the color vision characteristic can visually confirm the composition of the content by changing the viewpoint and repeatedly observing the second content and the third content.

4. A processing device that assigns colors to pixels of the first cell and the second layer cell of the display medium according to claim 1, characterized in that: The blue area of ​​the first cell, the red area of ​​the second cell, and the green area of ​​the second cell each have a plurality of pixels. The processing device has: a calculation unit that calculates each value of red, green, and blue of the color displayed by the first cell and the second cell in the first content; and The allocating unit allocates red, green or blue to pixels of a number corresponding to the calculated red, green and blue values ​​among the plurality of pixels in each area, and allocates a color other than red, green and blue to the remaining pixels.

5. The processing device according to claim 4, characterized in that The allocating unit allocates blue to a number of pixels corresponding to the calculated blue value among the plurality of pixels in the blue area, and allocates a color other than blue, red, and green to the remaining pixels. The allocating unit allocates red to a number of pixels corresponding to the calculated red value among the plurality of pixels in the red area, and allocates a color other than blue, red, and green to the remaining pixels. The allocating unit allocates green to pixels whose number corresponds to the calculated green value among the plurality of pixels in the green area, and allocates colors other than blue, red, and green to the remaining pixels.

6. The processing device according to claim 5, characterized in that The number corresponding to the red value is a value of a level corresponding to the red value when the range of values ​​that the red value can take is divided into levels equal to the number of pixels included in the red area+1. 7 . A program for causing a computer to function as the processing device according to claim 4 . 8 . A computer-readable storage medium storing a program for causing a computer to function as the processing device according to claim 4 .

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