Display medium, processing device, and program

Abstract

To provide space-saving content being easy to see for both the healthy person and color vision minorities.SOLUTION: A display medium 1 includes 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 prescribed direction, each of the red region R and the green region G of the second cells C2 is disposed adjacent to the blue region B of the first cells C1 in the prescribed direction. The display medium 1 displays first content in the red region R, the green region G, and the blue region B at a first viewpoint located in the prescribed direction, displays second content in the red region R at a second viewpoint located in a direction where the green region G and the blue region B overlap, and displays third content in the green region G at a third viewpoint located in a direction where the red region R and the blue region B overlap.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a display medium, a processing device, a program, and a recording medium. [Background technology]

[0002] People can sense color through the three color-sensing cells, red cones, green cones, and blue cones. However, if any of the cones are missing or not functioning properly, minority color vision may occur. In general, people with minority color vision have difficulty recognizing red and / or green colors. For example, if there is green text on a red background, or red text on a green background, people with minority color vision may not be able to recognize the text at all.

[0003] In light of this situation, universal design, which uses colors that are easy to see regardless of whether or not a person has color vision deficiency, is becoming more widespread. Universal design has several guidelines, such as not using red and green, which are difficult for people with color vision deficiency to see.

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

[0005] [Patent Document 1] Patent No. 6374625 [Patent Document 2] Patent No. 6758447 [Patent Document 3] Patent No. 6764990 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in universal design, the available colors are limited, and content cannot be expressed in any color.

[0007] Since content expressed in arbitrary colors is difficult for color vision deficiency sufferers to see, it is possible to present both content expressed in arbitrary colors for normal people and content expressed in colors suitable for color vision deficiency sufferers. However, a large space is required to present the same content in different color variations.

[0008] The present disclosure has been made in consideration of the above circumstances, and an object of the present disclosure is to provide a technology capable of displaying content that is space-saving and easily visible to both normal people and people with minority color vision. [Means for solving the problem]

[0009] A display medium according to an embodiment of the present disclosure relates to a display medium for displaying content that is visible to normal people and people with color vision deficiency. The display medium includes a first layer formed of a transparent member and having a plurality of cells, each of which has a blue region, and a second layer formed of a transparent member and having a plurality of cells, each of which has a red region and a green region, and 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 are overlapped and viewed from a predetermined direction, the red region and the green region of the second cell are disposed adjacent to the blue region of the first cell in the predetermined direction. The display medium displays a first content in the red region, the green region, and the blue region at a first viewpoint located in the predetermined direction, displays a second content in the red region at a second viewpoint located in a direction where the green region and the blue region overlap, and displays a third content in the green region at a third viewpoint located in a direction where the red region and the blue region overlap.

[0010] A processing device according to an embodiment of the present disclosure relates to a processing device that assigns colors to each pixel of the first cell and the cells of the second layer of the display medium, wherein a blue region of the first cell, a red region of the second cell, and a green region of the second cell each include a plurality of pixels, and the processing device includes a calculation unit that calculates red, green, and blue values ​​of colors to be displayed in the first cell and the second cell in the first content, and an assignment unit that assigns red, green, or blue to a number of pixels corresponding to the calculated red, green, and blue values ​​among the plurality of pixels in each region, and assigns black to the remaining pixels.

[0011] One aspect of the present disclosure is a program that causes a computer to function as the processing device. Effect of the Invention

[0012] According to the present disclosure, it is possible to provide a technology capable of displaying content that is easy to see for both people with normal color vision and people with minority color vision, while saving space. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a side view of a display medium according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view of the display medium according to the first embodiment. [Diagram 3] FIG. 3 is a side view of the cell according to the first embodiment. [Figure 4] FIG. 4 is a top view (part 1) of the color regions of the cell pair according to the first embodiment. [Diagram 5] FIG. 5 is a top view (part 2) of the color regions of the cell pair according to the first embodiment. [Figure 6] FIG. 6 is a diagram illustrating functional blocks of a processing device that generates output data for manufacturing the display medium according to the first embodiment. [Figure 7] FIG. 7 is a flowchart illustrating a process for determining colors to be assigned to a display medium according to the first embodiment. [Figure 8]FIG. 8 is a side view of the cell according to the second embodiment. [Figure 9] FIG. 9 is a top view of the color regions of a pair of cells according to the second embodiment. [Figure 10] FIG. 10 is a flowchart illustrating a process for determining colors to be assigned to a display medium according to the second embodiment. [Figure 11] FIG. 11 is a perspective view of a display medium according to the third embodiment. [Figure 12] FIG. 12 is a diagram illustrating an example of a cell of a display medium according to the third embodiment. [Figure 13] FIG. 13 is a diagram illustrating an example of covered pixels and exposed pixels in a display medium according to the third embodiment. [Figure 14] FIG. 14 is a diagram illustrating functional blocks of a processing device that generates output data for manufacturing a display medium according to the third embodiment. [Figure 15] FIG. 15 is a perspective view of a display medium according to the fourth embodiment. [Figure 16] FIG. 16(a) is a front view of a partition used in a display medium according to a fourth embodiment, and FIG. 16(b) is a right side view. [Figure 17] FIG. 17 is a cross-sectional view of a partition used in a display medium according to the fourth embodiment. [Figure 18] FIG. 18 is a diagram illustrating the hardware configuration of a computer used in the processing device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the description of the drawings, the same parts are given the same reference numerals and the description will be omitted.

[0015] (display medium) A display medium according to an embodiment of the present disclosure displays content that is visible to normal people and color vision deficiencies. The display medium displays content that is easily visible to normal people and color vision deficiencies in different directions.

[0016] A person with color vision deficiency is someone who sees or perceives colors differently than most other normal people and is sometimes medically referred to as color blind, color weak, or color vision deficiency. Most people have three types of cones to perceive color. A person with color vision deficiency has a deficiency in one or more of the three cones, which causes them to see colors differently than most other people.

[0017] The content displayed by the display medium according to the embodiment of the present disclosure is expressed by colors assigned to each of a plurality of pixels on the display medium.

[0018] A first content that can be expressed using the three primary colors RGB (Red, Green, Blue) is displayed on pixels among the plurality of pixels that can be seen from a first viewpoint. A second content that is an extracted red component of the first content is displayed on pixels among the plurality of pixels that can be seen from a second viewpoint. A third content that is an extracted green component of the first content is displayed on pixels among the plurality of pixels that can be seen from a third viewpoint.

[0019] A normal person views the first content. Furthermore, a person with minority color vision who has green cone deficiency or red cone deficiency changes the viewpoint and repeatedly views the second content and the third content, respectively. As a result, the display medium according to the embodiment of the present disclosure enables not only normal people but also people with minority color vision to view the composition of the content.

[0020] A processing device used to manufacture a display medium according to an embodiment of the present disclosure specifies the color to be given to each pixel of the display medium as output data input to a manufacturing device for manufacturing the display medium, such as a printing machine.

[0021] Here, a display medium according to an embodiment of the present disclosure includes a plurality of cells, and each cell includes a plurality of pixels.

[0022] The processing unit comprises a calculation unit and an allocation unit.

[0023] The calculation unit calculates each value of red, green, and blue of a color to be displayed in a predetermined cell in a first content that can be expressed using the three primary colors of red, green, and blue.

[0024] The assignment unit assigns colors to each pixel in a specified cell so that pixels seen from a first viewpoint in the specified cell display colors of each value of red, green, and blue, pixels seen from a second viewpoint in the specified cell display a color of red value, and pixels seen from the third viewpoint in the specified cell display a color of green value.

[0025] The inventors have found that although color vision deficiency sufferers have difficulty recognizing colors, they can grasp the composition of the content and understand the content by viewing multiple contents with different color variations. In addition, although there are multiple types of color vision deficiency, the inventors have found that many color vision deficiency sufferers can grasp the composition of the content by viewing red content and green content.

[0026] Therefore, since the display medium is capable of displaying three different contents in three directions, it displays content that is easily visible to a normal person in one direction, and displays reddish content and greenish content whose composition can be understood by a person with tritanopia in the other two directions. The content that is easily visible to normal people is content formed with RGB. The reddish content is content formed with RGB in which the red component is extracted and expressed in shades of red. The greenish content is content formed with RGB in which the green component is extracted and expressed in shades of green. Note that the reddish content or greenish content does not necessarily have to be the three primary colors red or green themselves, and the hue, brightness, saturation, etc. may be changed.

[0027] A person with minority color vision deficiency can switch the viewing direction of the display medium or switch the orientation of the display medium and repeatedly view red-based content and green-based content in sequence, and thereby be able to grasp the composition of the content, specifically the parts where the shading changes, from the shades of red or the shades of green.

[0028] Such a display medium is space-saving and can display content that is easily visible to both normal people and people with minority color vision.

[0029] In addition, the red and green content displayed by the display medium are generated by extracting each color component from the RGB content, so the composition of the content appears at the same position on the display medium. By switching the viewing direction of the display medium or by switching the orientation of the display medium, the shades of red or shades of green can be seen at the same position, so that, combined with the afterimage of the shades of red or shades of green, the composition of the content can be grasped.

[0030] In addition, specific examples of space-saving display media that display content that is easy to see for both normal people and people with minority color vision will be described in the first to fourth embodiments. Here, the display media will be described in four embodiments, but the present invention is not limited to these. In a display medium that can display different content in different directions, content formed of RGB (red, green, blue) that is easy for normal people to see, red content generated from the R (red) component, and green content generated from the G (green) component may be displayed.

[0031] (First embodiment) A display medium 1 according to a first embodiment will be described. The display medium 1 according to the first embodiment has the configuration of a display medium described in Non-Patent Document 2.

[0032] As shown in FIG. 1, the display medium 1 has a first layer L1 and a second layer L2. As shown in FIG. 1 and FIG. 2, the first layer L1 and the second layer L2 are formed on an XY plane and arranged parallel to the Z-axis direction. The display medium 1 displays a plurality of contents corresponding to a plurality of directions based on the portion of light from a plurality of directions passing through the first layer L1 and the second layer L2. Each content is viewed 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 display medium 1 displays a plurality of contents by a combination of the color of the portion of the light incident on the viewpoint that has passed through the first layer L1 and the color of the portion that has passed through the second layer L2, which differs depending on the direction of the light. The display medium 1 displays the contents at three different viewpoints above the first layer L1 and the second layer L2 in the X-axis direction.

[0033] In the first embodiment, a viewpoint for viewing each of the multiple contents is provided 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 view the multiple contents.

[0034] In the first embodiment, the light in a predetermined direction used when displaying the content is emitted from at least the first layer L1 and the second layer L2 in a direction opposite to the viewpoint. When the viewpoint is provided above the first layer L1 and the second layer L2 in the Z-axis direction, the light is emitted from below the first layer L1 and the second layer L2 in the Z-axis direction, and the position of the light source does not matter. The light directed from below the second layer L2 in the Z-axis direction to above may be, for example, light from a light source provided at an arbitrary position and reflected by the base material M, or light from a light source provided on the base material M.

[0035] 1, a transparent layer N is formed between a first layer L1 and a second layer L2. A base material M is provided on the second layer L2 in the opposite direction to the transparent layer N in the Z-axis direction. The display medium 1 is formed by stacking the base material M, the second layer L2, the transparent layer N, and the first layer L1 in this order in the Z-axis direction.

[0036] The transparent layer N is preferably formed of a material that transmits a large amount of light without absorbing color components of the light. The transparent layer N is formed of a transparent material such as water or transparent plastic. The transparent layer N may be formed of air. In other words, the first layer L1 and the second layer L2 may be arranged in parallel at a predetermined distance apart. The base material M is formed of a material such as a mirror or white paper that allows the colors given to the first layer L1 and the second layer L2 to be easily visible.

[0037] As shown in FIG. 1 and FIG. 2, the first layer L1 and the second layer L2 are each formed of a transparent material and have a plurality of cells C. The positions of the cells C need not be visible as long as a printer or the like that gives color to the color region of the cells C can be specified by defining the position of a given cell. For example, the cells C do not need to be physically separated, such as there being no clear line, partition, recess, or other separator between adjacent Cs. In addition, the cells C do not need to be visible, such as by giving the same color or the same colorlessness to the ends of the two cells at the boundary between two adjacent cells C.

[0038] 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 shifted in the Z-axis direction from each cell C of the second layer L2. More specifically, as shown in FIG. 2, in the embodiment of the present invention, the first cell C1 of the first layer L1 is formed at a position shifted in the Z-axis direction from the second cell C2 of the second layer L2. The same is true for the other cells. In the first embodiment, the relationship between cells formed at positions shifted in the Z-axis direction, such as the first cell C1 and the second cell C2, is called "corresponding".

[0039] 1 to 3, the first layer L1 is formed of a transparent material and has a plurality of cells C, each of which has a blue region B. The second layer L2 is formed of a transparent material and has a plurality of cells C, each of which has a red region R and a green region G. In the first embodiment, a case will be described in which the blue region B, the red region R, and the green region G have the same shape.

[0040] A pair of corresponding cells C will be described with reference to FIG. 3. In the first embodiment, a transparent region is provided at the boundary between the first cell C1 and the second cell C2, and a color region is provided inside the transparent region. By providing the transparent region, it is possible to form the color region so that light passing through the color region does not pass through the color region of the adjacent cell, thereby reducing the burden of calculating the color to be assigned to each pixel. The color region is formed by applying ink to each layer. The ink may be dye ink or pigment ink. Note that the non-hatched parts in FIG. 3 are transparent parts on which ink is not applied.

[0041] The positions of the first cell C1 and the second cell C2 are set so that light passing through the color region of the first cell C1 passes through the second cell C2, and light passing through the color region of the second cell C2 passes through the first cell C1. In the first embodiment, a case where the pair of corresponding cells C is shifted in the Z-axis direction will be described, but this is not limited to this. The pair of corresponding cells C may be shifted in an oblique direction, specifically, not only in the Z-axis direction but also in the X-axis direction.

[0042] In the first embodiment, when a first cell C1 of a first layer L1 and a second cell C2 of a second layer L2 corresponding to the first cell C1 of the first layer L1 are overlapped and viewed from a predetermined direction, each of the red region R and green region G of the second cell C2 is positioned adjacent to the blue region B of the first cell C1 in the predetermined direction.

[0043] 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 on either side of the region corresponding to the blue region B. When the overlapping state of the first cell C1 of the first layer L1 and the second cell C2 of the second layer L2 is viewed from directly above (above in the Z-axis direction), the red region R, blue region B, and green region G are arranged side by side from left to right, as shown in Figure 4(a). The right edge of the red region R and the left edge of the blue region B are in contact. The right edge of the blue region B and the left edge of the green region G are in contact.

[0044] In the first embodiment, a case will be described in which a red region R is provided on the left side of a blue region B and a green region G is provided on the right side, but this is not limiting. A green region G may be provided on the left side of a blue region B and a red region R may be provided on the right side.

[0045] As shown in FIG. 3(a), a viewpoint located in a first direction D1 where the red region R and green region G of the second cell C2 are each viewed as adjacent to the blue region B of the first cell C1, specifically, a position directly above the display medium 1, is defined as a first viewpoint. From the first viewpoint, a user can view the blue region B, the red region R, and the green region G, respectively. The display medium 1 displays a first content in the red region R, the green region G, and the blue region B at the first viewpoint. The display medium 1 can display content expressed in the three primary colors of light, RGB (Red, Green, Blue), upward.

[0046] As shown in FIG. 3(b), a viewpoint located in the second direction D2 where the green region G of the second cell C2 and the blue region B of the first cell C1 overlap, specifically, a position diagonally above and to the left of the display medium 1, is defined as the second viewpoint. From the second viewpoint, the user can see the red region R. The green region G is masked by the blue region B. The overlapping region of the blue region B and the green region G absorbs all the colors of red, green, and blue and displays black, so the user cannot see either the blue region B or the green region G. The display medium 1 displays the second content in the red region R at the second viewpoint.

[0047] As shown in FIG. 3(c), a viewpoint located in a third direction D3 where the red region R of the second cell C2 and the blue region B of the first cell C1 overlap, specifically, a position diagonally upward to the right of the display medium 1, is defined as the third viewpoint. From the third viewpoint, the user can see the green region G. The red region R is masked by the blue region B. The overlapping region of the blue region B and the red region R absorbs all the colors red, green, and blue and displays black, so the user cannot see either the blue region B or the red region R. The display medium 1 displays the third content in the green region G at the third viewpoint.

[0048] It is preferable that the first, second and third viewpoints are at the same distance from the display medium 1 in the Z-axis direction and at different positions in the X-axis direction.

[0049] Next, a method of expressing a color to be expressed by a pair of a first cell C1 and a second cell C2 in each color region will be described. The blue region B of the first cell C1, the red region R of the second cell C2, and the green region G of the second cell C2 each include a plurality of pixels. In the first embodiment, the blue region B, the red region R, and the green region G each include a plurality of pixels of the same number and shape. In the first embodiment, the number of colors that are colored with the color of the region among the plurality of pixels expresses the color intensity. The blue given to the blue region B of the first cell C1, the red given to the red region R of the second cell C2, and the green given to the green region G of the second cell C2 may be blue, red, or green, which are the three primary colors of color, or may be colors whose hue, brightness, saturation, etc. are changed from these colors.

[0050] The color to be expressed by the pair of the first cell C1 and the second cell C2 is decomposed into the three primary colors of light, RGB, and their values ​​are calculated. Of the multiple pixels in each region, the number of pixels corresponding to the red, green, and blue values ​​of the color displayed by the first cell C1 and the second cell C2 are colored red, green, or blue, respectively, and the remaining pixels are colored black.

[0051] For example, as shown in Figures 4 and 5, when each color area is expressed by 12 pixels, each color area is expressed in 13 gradations, from 0 to 12 pixels, depending on the number of pixels to be colored. The color to be expressed by the pair of the first cell C1 and the second cell C2 is expressed in 256 gradations, from 0 to 255.

[0052] FIG. 4(a) shows the case where RGB=(255,255,255). In FIG. 4(a), each pixel in each color region is colored with the color of that color region. Each of the 12 pixels in the blue region B is colored blue. Each of the 12 pixels in the red region R is colored red. Each of the 12 pixels in the green region G is colored green.

[0053] Figure 4(b) shows the case where RGB = (255, 0, 255). In Figure 4(b), there is no color to be represented in the green area G, and each pixel in the blue area B and red area R is colored with a pixel in that color area. The 12 pixels in the blue area B are colored blue, the 12 pixels in the red area R are colored red, and the 12 pixels in the green area G are colored black.

[0054] 5(a) to (c) respectively show the case where RGB=(127,127,127). In this case, in each color area, half is colored with the color of that area, and the other half is colored black. In the first embodiment, the area to be colored may be determined in any manner.

[0055] In FIG. 5(a), the black regions are arranged in a checkerboard pattern. In FIG. 5(b), the black regions are arranged in half of the Y direction. In FIG. 5(c), the black regions are arranged in a line in the X direction of each region. In the example of FIG. 5, the black regions of each color region are arranged in the same manner, but this is not limited to this. For example, the black regions may be arranged in any combination, such as the blue region B as in FIG. 5(a), the red region R as in FIG. 5(b), and the green region as in FIG. 5(c). There is no need for regularity in the black regions, and they may be arranged randomly.

[0056] In the first embodiment, a case will be described in which pixels that are not colored red, green, or blue are colored black, but this is not limiting. It is sufficient if pixels that are not colored red, green, or blue are colored a color other than red, green, and blue (a color that is neither blue, red, nor green).

[0057] The display medium 1 displays content expressed in the blue region B, red region R, and green region G, as well as content expressed in the red region R and content expressed in the green region G. A person with normal color vision sees the content expressed in the blue region B, red region R, and green region G. A person with minority color vision due to green cone deficiency or red cone deficiency can see the composition of the content by changing the viewpoint and repeatedly viewing the second content expressed in the red region R and the third content in the green region G.

[0058] In the first embodiment, a person with minority color vision deficiency can recognize the composition from the shading that appears in the composition in each of the red area R and the green area G by alternating between a viewpoint on the display medium 1 where the second content is visible and a viewpoint where the third content is visible, specifically, by changing the viewpoint from an upper left direction to an upper right direction on the display medium 1.

[0059] (Processing device) With reference to Fig. 6, a processing device 10 that determines the color to be applied to the display medium 1 will be described. The processing device 10 includes input image data 11, cell color data 12, and output data 13, as well as the functions of a calculation unit 16 and an allocation unit 17. Each piece of data is stored in a storage device such as a memory 902 or a storage 903. Each function is implemented in a CPU 901.

[0060] The input image data 11 is an image of the content to be displayed by the display medium 1. The input image data 11 includes a plurality of pixels, and each pixel is associated with a predetermined color.

[0061] The cell color data 12 is data on the color to be expressed by each cell pair of the display medium 1 .

[0062] The output data 13 is data that associates the values ​​of the colors printed on each layer with their positions when the manufacturing equipment forms the display medium 1. For each pair of cells, the output data 13 associates a pixel to be colored blue and a pixel to be colored black in the first cell C1 of the pair, and a pixel to be colored red, a pixel to be colored green, and a pixel to be colored black in the second cell C2.

[0063] The calculation unit 16 calculates each value of red, green, and blue (RGB) of a color displayed in a first cell C1 and a second cell C2 of a certain cell pair in a first content expressed in RGB. The calculation unit 16 calculates the RGB value corresponding to the position of the pair to be processed in the input image data 11 as the RGB value of the color displayed in the first cell C1 and the second cell C2 of this pair. The calculation unit 16 calculates the RGB value for each cell pair and outputs it to the cell color data 12.

[0064] The allocation unit 17 determines pixels to which each color is assigned in each of the blue region B, red region R, and green region G for each cell pair, and outputs the determined pixels to the output data 13. For the cell pair to be processed, the allocation unit 17 assigns red to a number of pixels in the red region R that correspond to the calculated red value, and assigns black to the remaining pixels. The allocation unit 17 assigns green to a number of pixels in the green region G that correspond to the calculated green value, and assigns black to the remaining pixels. The allocation unit 17 assigns blue to a number of pixels in the blue region B that correspond to the calculated blue value, and assigns black to the remaining pixels.

[0065] It is assumed that the calculation unit 16 calculates BRG=(150, 50, 100) for the pair of cells to be processed. Here, it is assumed that each value of RGB is an integer between 0 and 255, and that the red area R, green area G, and blue area B are each formed by 12 pixels.

[0066] The number corresponding to the blue value, specifically the number of pixels assigned to blue in blue area B, is the value of the step corresponding to the blue value when the possible range of blue values, 0-255, is divided into steps based on the number of pixels in blue area B, 12 + 1.

[0067] The value obtained by dividing the value of B, 150, by the number of gradations, 256, is 0.58. The value obtained by multiplying this value, 0.58, by the number of gradations, 13, that can be expressed by the pixels in blue area B is 7.54. Therefore, of the 12 pixels in blue area B, allocation unit 17 allocates red to 8 pixels and black to the remaining 4 pixels. Note that in the present disclosure, values ​​are rounded off to the nearest integer.

[0068] The number corresponding to the value of red, specifically the number of pixels assigned to red in the red region R, is the value of the step corresponding to the red value when the possible range of red values, 0-255, is divided into steps based on the number of pixels in the red region R, 12+1.

[0069] The value obtained by dividing the R value of 50 by the number of gradations, 256, is 0.19. The value obtained by multiplying this value 0.19 by the number of gradations, 13, that can be expressed by the pixels in the red area R is 2.47. Therefore, the allocation unit 17 assigns red to two pixels of the 12 pixels in the red area R, and assigns black to the other 10 pixels.

[0070] The number corresponding to the green value, specifically the number of pixels assigned to green in the green region G, is the value of the step corresponding to the green value when the range of possible green values, 0-255, is divided into steps based on the number of pixels in the green region G, 12+1.

[0071] The value obtained by dividing the G value of 100 by the number of gradations, 256, is 0.39. The value obtained by multiplying this value 0.39 by the number of gradations, 13, that can be expressed by the pixels in the green region G is 4.68. Therefore, the allocation unit 17 allocates red to five of the 12 pixels in the green region G, and allocates black to the remaining seven pixels.

[0072] The blue region B is colored with 8 pixels, the red region R with 2 pixels, the green region G with 5 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 approximated to the BRG ratio of 150:50:100 calculated from the input image data 11.

[0073] After determining the number of pixels to be assigned red, green, or blue for the cell pair to be processed, the allocation unit 17 determines which pixels to color with the color of the region. The allocation unit 17 determines the pixels to be assigned the color of the region randomly or according to a predetermined rule based on the shape of each region. The allocation unit 17 identifies the pixels to be colored with the color of each region for each cell pair and generates output data 13.

[0074] With reference to FIG. 7, a process of allocating blue, red, green or black to pixels in the blue region B, red region R and green region G for a given target cell pair will be described.

[0075] First, in step S101, the processing device 10 obtains pixel values ​​at the positions of the pair of cells to be processed from the input image data 11. In step S102, the processing device 10 breaks down the pixel values ​​obtained in step S101 into RGB values.

[0076] In step S103, the processing device 10 determines the number of pixels to be painted blue in the blue region B from the ratio of the B value to the maximum 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 region B, and assigns black to the remaining pixels.

[0077] In step S105, the processing device 10 determines the number of pixels to be painted red in the red region R from the ratio of the R value to the maximum 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.

[0078] In step S106, the processing device 10 determines the number of pixels to be painted green in the green region G from the ratio of the G value to the maximum G value. In step S107, the processing device 10 assigns red to the number of pixels determined in step S106 among the pixels in the green region G, and assigns black to the remaining pixels.

[0079] 7 for each pair of cells, and outputs the pixel-color correspondence for each pair as output data 13. The output data 13 is input to a manufacturing device such as a printer, which outputs a first layer L1 and a second layer L2 in which each pixel is colored with an appropriate color. The display medium 1 is formed from the substrate M, the second layer L2, and the third layer.

[0080] The display medium 1 according to the first embodiment is space-saving and capable of displaying content that is easily visible to both normal people and people with minority color vision.

[0081] (Second embodiment) The display medium 1 according to the second embodiment has the configuration of the display medium described in Non-Patent Document 2, similar to the display medium 1 according to the first embodiment.

[0082] In the first embodiment, a case where the display medium 1 is generated using a printer or the like has been described, but in the first embodiment, the transparency of the ink does not matter, and either dye ink or pigment ink can be used. In the second embodiment, a display medium 1 in which a non-transparent ink such as pigment ink is used will be described. Since pigment ink is not transparent, it is possible to arrange the colored portion of the first layer L1 so as to overlap the colored portion of the second layer L2.

[0083] The first cell C1 of the first layer L1 has a blue region B in its central portion. The second cell C2 of the second layer L2 has a red region R and a green region G that overlap with the blue region B. In the second embodiment, the left side of the center of the blue region B overlaps with the red region R, and the right side overlaps with the green region G. A part of the right side of the red region R overlaps with the blue region B. A part of the left side of the green region overlaps with the blue region B. In the second embodiment, the red region R and green region G of the second layer L2 are formed wider (wider in the X direction) than the blue region B of the first layer L1.

[0084] Fig. 9(a) explains the colored portions of the first layer L1 and the second layer L2. In Fig. 9, the upper part shows the blue area of ​​the first layer L1, and the lower part shows the red area R and green area G of the second layer L2. The dashed line connecting the upper and lower parts shows the corresponding positions of each color area when the first layer L1 and the second layer are superimposed.

[0085] 9(a), the blue region B has 6 pixels*2 columns=12 pixels, and the red region R and the green region G each have 6 pixels*3 columns=18 pixels. The rightmost column of the red region R overlaps with the leftmost column of the blue region B. The leftmost column of the green region G overlaps with the rightmost column of the green region G.

[0086] In the second embodiment, a case will be described in which a red region R is provided on the left side of a blue region B and a green region G is provided on the right side, but this is not limiting. A green region G may be provided on the left side of a blue region B and a red region R may be provided on the right side.

[0087] As shown in Fig. 8(a), a viewpoint located in a first direction D1 where the red region R and green region G of the second cell C2 are each viewed as adjacent to the blue region B of the first cell C1, specifically, a position directly above the display medium 1, is defined as the first viewpoint. From the first viewpoint, a user can view the blue region B, the red region R, and the green region G. The left edge of the blue region B is located in the center of the red region R in the horizontal direction. The right edge of the blue region B is located in the center of the green region G in the horizontal direction.

[0088] Display medium 1 displays a first content in a red region R, a green region G, and a blue region B at a first viewpoint. Display medium 1 can display content expressed in the three primary colors of light, RGB (Red, Green, Blue), above.

[0089] As shown in FIG. 8(b), a viewpoint located in the second direction D2 where the green region G of the second cell C2 and the blue region B of the first cell C1 overlap, specifically, a position diagonally above and to the left of the display medium 1, is defined as the second viewpoint. From the second viewpoint, the user can see the red region R and the blue region B. Since the green region G is masked by the blue region B, the user cannot see the green region G. The display medium 1 displays the second content in the red region R and the blue region B at the second viewpoint. However, a person with specific color vision deficiency cannot react to the blue region B, and therefore sees the second content displayed in the red region R.

[0090] As shown in FIG. 8(c), a viewpoint located in a third direction D3 where the red region R of the second cell C2 and the blue region B of the first cell C1 overlap, specifically, a position diagonally upwards to the right of the display medium 1, is defined as the third viewpoint. From the third viewpoint, a user can see the green region G and the blue region B. Since the red region R is masked by the blue region B, the user cannot see the red region R. The display medium 1 displays the third content in the green region G and the blue region B at the third viewpoint. However, a person with specific color vision deficiency cannot react to the blue region B, and therefore sees the third content displayed in the green region B.

[0091] The display medium 1 of the second embodiment, like the display medium 1 of the first embodiment, can display content that is easy to see for both healthy people and people with minority color vision deficiency, in a space-saving manner.

[0092] 3(b) and 3(c), blue region B and green region G, or blue region B and red region R, overlap. In the first embodiment, blue region B, red region R, and green region G have the same shape, so the viewpoint where they overlap is limited in the X direction, and the position where appropriate red content or green content can be seen is narrow.

[0093] In contrast, in the second embodiment, the red region R and the green region G are wider than the blue region B, so the range where the blue region B and the green region G, or the blue region B and the red region R, overlap is wider in the X-axis direction, and the position where the appropriate red content or green content can be seen is wider. For example, the viewpoint in the direction where the two columns of the blue region B overlap with the left two columns or the right two columns of the three columns of the red region R becomes the second viewpoint. Similarly, the viewpoint in the direction where the two columns of the blue region B overlap with the left two columns or the right two columns of the three columns of the green region G becomes the third viewpoint.

[0094] Therefore, compared with the display medium 1 according to the first embodiment, the display medium 1 according to the second embodiment makes it easier to adjust the viewing position of reddish content and greenish content, and is expected to reduce the burden on people with minority color vision deficiency.

[0095] In the second embodiment, the number of pixels colored blue, red, or green in each region, or the number of pixels colored black, is calculated in the same way as in the first embodiment. However, in the second embodiment, the red region R or green region G overlapping with the blue region B is variable in the second or third viewpoint. In each row in the direction (Y axis direction) perpendicular to the direction (X axis direction) in which the viewpoint moves, the ratio of pixels assigned with each color of blue, red, or green and pixels assigned with black must be the same. The direction of movement of the line of sight is the direction connecting the second viewpoint for viewing red content for people with minority color vision and the second viewpoint for viewing green content.

[0096] 9(b) and (c) show the case where RGB=(127,127,127), respectively. In this case, half of each color region is colored with the color of that region, and the remaining half is colored black. However, in the second embodiment, the ratio of pixels assigned to each color and pixels assigned to black is the same in each column. As long as the ratio of these pixels is the same, they may be arranged in any manner. For example, the blue region B may be arranged as shown in FIG. 9(a), and the red region R and green region G may be arranged as shown in FIG. 9(c), and black regions may be arranged in any combination. Furthermore, the black regions do not require any regularity, and may be arranged randomly.

[0097] However, as shown in Figure 5(c), there should be no variation in the number of pixels given color and the number of pixels given black in each column in the Y-axis direction. This is because when viewed from a second viewpoint, the shade of the red content changes depending on the position of the viewpoint, and similarly, when viewed from a third viewpoint, the shade of the green content changes depending on the position of the viewpoint.

[0098] The processing device 10 that determines the colors to be displayed on the display medium 1 according to the second embodiment is as described with reference to Fig. 6. However, the difference is that the allocation unit 17 has the same ratio of pixels to be assigned each of the colors blue, red, or green and pixels to be assigned black in each column in the direction (Y-axis direction) perpendicular to the direction in which the viewpoint moves (X-axis direction).

[0099] With reference to FIG. 10, a process of allocating blue, red, green or black among the pixels in the blue region B, red region R and green region G for a given target cell pair will be described.

[0100] The processes in steps S201 and S202 are similar to those in steps S101 and S102 in FIG.

[0101] In step S203, the processing device 10 determines the number of pixels to be painted blue in the blue region B from the ratio of the B value to the maximum 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 region 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 perpendicular to the direction in which the viewpoint is changed, and assigns black to the remaining pixels.

[0102] In step S205, the processing device 10 determines the number of pixels to be painted red in the red region R from the ratio of the R value to the maximum R value. In step S206, 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. At this time, the processing device 10 assigns red to the same number of pixels in each pixel group in a direction perpendicular to the direction in which the viewpoint is changed, and assigns black to the remaining pixels.

[0103] In step S206, the processing device 10 determines the number of pixels to be painted green in the green region G from the ratio of the G value to the maximum G value. In step S207, the processing device 10 assigns red 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 perpendicular to the direction in which the viewpoint is changed, and assigns black to the remaining pixels.

[0104] The processing device 10 repeats the process shown in FIG. 7 for each pair of cells, and outputs the pixel-color correspondence for each pair to the output data 13. The output data 13 is input to a manufacturing device such as a printer, which outputs a first layer L1 and a second layer L2 in which each pixel is colored with an appropriate color. At this time, the printer prints a predetermined color on the first layer L1 and the second layer L2 with an opaque ink such as a pigment ink. The display medium 1 is formed from the substrate M, the second layer L2, and the third layer.

[0105] The display medium 1 according to the second embodiment can display content that is easy to see for both normal people and people with minority color vision in a small space. Furthermore, the display medium 1 according to the second embodiment has a wider range in which reddish content or greenish content can be seen than the display medium 1 according to the first embodiment, so that the burden of adjusting the viewpoint on the user is reduced.

[0106] (Third embodiment) In the first and second embodiments, a case has been described in which a display medium is formed using the technique described in Non-Patent Document 2. In the third embodiment, a case in which a display medium 100 is formed using the technique described in Non-Patent Document 1 will be described.

[0107] The display medium 100 according to the third embodiment displays content that is visible to normal people and people with minority color vision. The display medium 100 displays three pieces of content corresponding to three azimuth angles from a given elevation angle and azimuth angle.

[0108] As shown in Fig. 11, 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 may be in the form of a thin sheet such as paper, or may have a three-dimensional shape. The upper surface of the substrate 101 may be flat or curved.

[0109] 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 apart from each other. As shown in FIG. 12, each of the plurality of cells C is divided into three subcells K0, K1, and K2 corresponding to three azimuth angles. Subcell K0 corresponds to azimuth angle φ0. Subcell K1 corresponds to azimuth angle φ1. Subcell K2 corresponds to azimuth angle φ2.

[0110] In each of the subcells K0, K1, and K2 corresponding to a given azimuth angle, protruding members T0, T1, and T2 are formed, respectively. The protruding member T0 is formed in the subcell K0. The protruding member T1 is formed in the subcell K1. The protruding member T2 is formed in the subcell K2.

[0111] The protruding members T0, T1, and T2 are formed of a material that blocks light. The protruding members T0, T1, and T2 have a surface in a predetermined azimuth direction, more specifically, a surface parallel to the azimuth angle corresponding to the subcell in which the protruding member is formed.

[0112] From a given elevation and azimuth angle, the colored portion of the subcell corresponding to the given azimuth angle is observed.

[0113] For example, when a user observes coordinate x on display medium 100 at a predetermined elevation angle ω0 and azimuth angle φ0, the user can confirm the color value of the coordinate of a first content corresponding to coordinate x on display medium 100. Similarly, when a user observes coordinate x on display medium 100 at a predetermined elevation angle ω1 and azimuth angle φ1, the user can confirm the color value of the coordinate of a second content corresponding to coordinate x on display medium 100. Furthermore, when a user observes coordinate x on display medium 100 at a predetermined elevation angle ω2 and azimuth angle φ2, the user can confirm the color value of the coordinate of a third content corresponding to coordinate x on display medium 100.

[0114] In the third embodiment, a case will be described in which a first content is displayed at an azimuth angle φ0, a second content is displayed at an azimuth angle φ2, and a third content is displayed at an azimuth angle φ3, but the present invention is not limited to this. The correspondence between the azimuth angles and the contents to be displayed is determined appropriately.

[0115] With reference to Fig. 12, cell C at coordinate x will be described. Cell C includes subcells K0, K1, and K2. Three protruding members T0 parallel to the direction of azimuth angle φ0 are arranged in subcell K0. Two protruding members T1 parallel to the direction of azimuth angle φ1 are arranged in subcell K1. Three protruding members T2 parallel to the direction of azimuth angle φ2 are arranged in subcell K2.

[0116] Since the protruding member T has a predetermined height, when the display medium 1 is observed from a certain elevation angle, some parts are shielded by the protruding member T and some parts are not shielded by the protruding member T. When observed from an azimuth angle φ0, the user can see the colored portion 102 of the subcell K0 where the protruding member T0 parallel to the azimuth angle φ0 is formed, but it is difficult to see the colored portion 102 of the other subcells K1 or K2. When observed from an azimuth angle φ1, the user can see the colored portion 102 of the subcell K1 where the protruding member T1 parallel to the azimuth angle φ1 is formed, but it is difficult to see the colored portion 102 of the other subcells K0 or K2. When observed from an azimuth angle φ2, the user can see the colored portion 102 of the subcell K2 where the protruding member T2 parallel to the azimuth angle φ2 is formed, but it is difficult to see the colored portion 102 of the other subcells K0 or K1.

[0117] Such a display medium 100 according to the third embodiment can display three contents in three directions. The display medium 100 can display a first content that can be expressed using the three primary colors of red, green, and blue at a first viewpoint on the azimuth angle φ. The display medium 100 can display a second content that is an extracted red component of the first content at a second viewpoint on the azimuth angle φ1. The display medium 100 can display a third content that is an extracted green component of the first content at a third viewpoint on the azimuth angle φ2.

[0118] In the third embodiment, when viewed from a specific azimuth angle, it is ideal for a user to be able to see each pixel of the colored portion 102 of the sub-cell that corresponds to that azimuth angle, but not be able to see each pixel of the colored portion 102 of the sub-cell that does not correspond to that azimuth angle; however, this may not always be the case.

[0119] Consider the case where a protruding member T1 is formed in subcell K1 as shown in FIG. 13. When a user observes from the ω1 direction parallel to the protruding member T1, almost all pixels in subcell K1 can be confirmed. However, a shielded portion K1a, which is a pixel that is not observed, is formed in subcell K1. Also, an exposed portion K2b, which is a pixel that is observed in subcell K2 that does not correspond to the azimuth angle φ1, may be formed. Therefore, in the processing of the allocation unit 117 described later, a group of pixels that are visible for each viewpoint is identified, and a color is assigned to the identified group of pixels so that it is displayed at that viewpoint.

[0120] Next, processing unit 110, which assigns a color to each pixel of display medium 100, will be described.

[0121] 14, 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 piece of data is stored in a storage device such as a memory 902 or a storage 903. Each function is implemented in a CPU 901.

[0122] 6. Input image data 111, cell color data 114, and output data 115 are similar to the input image data 11, cell color data 12, and output data 13 in Fig. 6. The process of calculation unit 116 is similar to the process of calculation unit 16 in Fig. 6.

[0123] The condition data 112 is data that specifies the azimuth angle and elevation angle at which content is displayed on the display medium 100. The shape data 113 is data that specifies the position and height of a protruding member disposed in each sub-cell of the display medium 100.

[0124] The allocation unit 117 allocates colors to each pixel in the cell to be processed so that pixels seen from a first viewpoint in the cell to be processed display colors of each value of red, green, and blue, pixels seen from a second viewpoint in the cell to be processed display colors of red value, and pixels seen from a third viewpoint in the cell to be processed display colors of green value. The pixels to be allocated colors here are pixels in the cell to be processed where no protruding members are formed.

[0125] The allocation unit 117 identifies, among the pixels in the cell to be processed, a group of pixels that are visible from a first viewpoint, a group of pixels that are visible from a second viewpoint, and a group of pixels that are visible from a third viewpoint. For example, in the example of Fig. 13, the pixels that are visible when viewed from the azimuth angle φ1 include the exposed portion K2b in the subcell K2, but do not include the occluded portion K1a in the subcell K1.

[0126] The allocation unit 117 allocates a color to each pixel in each pixel group so that the RGB value to be expressed in the cell to be processed and the red and green values ​​of the RGB value can be expressed. At this time, the color of each pixel may be optimized so that the luminance in each sub-cell is the same.

[0127] The processing device 110 repeats the process of assigning a color to each pixel for each cell, and outputs the correspondence between the pixel and the color in each cell as output data 115. By inputting the output data 115 to a manufacturing device such as a printer, the display medium 100 is output in which each pixel is colored with an appropriate color. The printer may be a 3D printer that can also form protruding members.

[0128] The display medium 100 of the third embodiment, like the display medium 1 of the first or second embodiment, is space-saving and can display content that is easily visible to both healthy people and people with minority color vision deficiency.

[0129] (Technology A) A display medium capable of displaying three contents corresponding to three azimuth angles for three viewpoints corresponding to a predetermined elevation angle and three azimuth angles, the display medium comprising: the content displayed by the display medium is represented by colors assigned to each of a plurality of pixels; displaying a first content that can be expressed using three primary colors of red, green, and blue at pixels among the plurality of pixels that are visible from a first viewpoint; displaying a second content obtained by extracting a red color component of the first content at pixels among the plurality of pixels that are visible from a second viewpoint; displaying a third content obtained by extracting a green color component of the first content at pixels among the plurality of pixels that are visible from a third viewpoint; A person with minority color vision who has green cone deficiency or red cone deficiency can visually recognize the composition of the content by changing the viewpoint and repeatedly viewing the second content and the third content. Display medium.

[0130] (Technology B) A display medium capable of displaying three contents corresponding to three azimuth angles at a predetermined elevation angle and three azimuth angles, A substrate that reflects light is provided, Dividing the substrate into a plurality of cells; Dividing each of the plurality of cells into three subcells corresponding to the three azimuth angles; A protruding member having a surface in a direction of the predetermined azimuth angle that blocks light is formed in each subcell corresponding to the predetermined azimuth angle; A sub-cell corresponding to the predetermined azimuth angle is observed from the predetermined elevation angle and azimuth angle, a first content that can be expressed using the three primary colors of red, green, and blue is displayed at pixels among the plurality of pixels that are seen from a first viewpoint, a second content that is an extracted red component of the first content is displayed at pixels among the plurality of pixels that are seen from a second viewpoint, and a third content that is an extracted green component of the first content is displayed at pixels among the plurality of pixels that are seen from a third viewpoint; A person with color vision deficiency is allowed to view the composition of the content by changing the viewpoint and repeatedly viewing the second content and the third content. Display medium.

[0131] (Technology C) A processing device for assigning a color to each pixel of a display medium according to the technology B, the display medium comprises a plurality of cells; a calculation unit that calculates each value of red, green, and blue of a color to be displayed in a predetermined cell in the first content; displaying the colors of each of the red, green, and blue values ​​in pixels seen from the first viewpoint in the specified cell; displaying the color of the red value in pixels seen from the second viewpoint in the specified cell; To display a color of the green value at a pixel in the given cell that is visible from the third viewpoint, an assigner for assigning a color to each pixel in the predetermined cell; A processing device comprising:

[0132] (Fourth embodiment) In the first and second embodiments, a case has been described in which a display medium is formed using the technique described in Non-Patent Document 2. In the third embodiment, a case will be described in which a display medium 200 is formed using the technique described in Non-Patent Document 3.

[0133] The display medium 200 according to the fourth embodiment displays content that is visible to normal people and people with minority color vision. The display medium 200 displays three pieces of content corresponding to three azimuth angles from a given elevation angle and azimuth angle.

[0134] 15, 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 flat or curved.

[0135] The upper surface of the base material 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.

[0136] One partition P is provided for one cell C. The partition P is a surface formed on a plane intersecting with the base material 201, and has a portion that is exposed when the display medium 200 is observed from each of three directions. The partition P has a plurality of pixels on its surface.

[0137] As shown in Fig. 16, the partition P is formed so as to radially divide the space on the cell C into three directions from a point on the cell C. In the fourth embodiment, the partition P divides the space on the cell C into a first viewpoint, a second viewpoint, and a third viewpoint on the X-axis above the display medium 200. The partition P may be provided so as to be in contact with the outer edge of the cell C and not to be connected to the partition of an adjacent cell. Alternatively, the partition P may be provided so as to be connected to the partition of an adjacent cell C.

[0138] The skeleton of the partition P is a part of a Voronoi surface in a Voronoi diagram having points virtually set in each of the three directions as generating points.

[0139] A surface of partition P has a plurality of pixels. A first content that can be expressed using the three primary colors of red, green, and blue is displayed at pixels among the plurality of pixels that are visible from a first viewpoint. A second content that is an extracted red component of the first content is displayed at pixels among the plurality of pixels that are visible from a second viewpoint. A third content that is an extracted green component of the first content is displayed at pixels among the plurality of pixels that are visible from a third viewpoint.

[0140] The combination of the viewpoint and the content to be displayed for that viewpoint is set appropriately. For example, a content with a green component extracted may be displayed in the pixel seen from the second viewpoint, and a content with a red component extracted may be displayed in the pixel seen from the third viewpoint.

[0141] A person with color vision deficiency can visually recognize the composition of the content by changing the viewpoint and repeatedly viewing the second content and the third content.

[0142] The shape of partition P will be described with reference to Fig. 17. In the fourth embodiment, a Voronoi diagram for a mother point virtually provided in the direction in which the content is displayed is virtually formed. Partition P includes a Voronoi surface in the Voronoi diagram in its skeleton. Partition P is obtained by adding flesh to the skeleton Voronoi surface. The surface of partition P includes a surface parallel to the Voronoi surface.

[0143] In the example shown in Fig. 17, three viewpoints E1, E2, and E3 are provided. Generator points H1, H2, and H3 are provided on the line of sight when viewing the center Cs of cell C from each of the viewpoints E1, E2, and E3. The generator points H1, H2, and H3 are provided on a virtual sphere of a predetermined radius centered on the center Cs of cell C.

[0144] The partition P has two shielding members W1 and W2. The shielding members W1 and W2 divide the space above the cell C in which the partition P is installed into three regions.

[0145] The shielding member W1 has a Voronoi surface Q1 as a skeleton and is fleshed out to a thickness of 1. The shielding member W2 has a Voronoi surface Q2 as a skeleton and is fleshed out to a thickness of 1. The tip of the shielding member W1 is formed into a circle with a radius of 1.

[0146] The shielding member W1 divides the space above the cell C into a space A1 corresponding to the viewpoint E1 and a space A2 corresponding to the viewpoint E2. The shielding member W2 divides the space above the cell C into a space A2 corresponding to the viewpoint E2 and a space A3 corresponding to the viewpoint E2.

[0147] The surface of the partition P has a portion that is exposed when the display medium 1 is observed from a predetermined specified direction out of three directions, and a portion that is blocked when the display medium 1 is observed from a direction other than the predetermined specified direction out of the three specified directions. Even if a pixel F on the surface of the partition P is exposed in one or more of the three directions, it may not be visible from the other specified directions. The surface of the partition P expresses the color of the content corresponding to the direction in which it is exposed. This enables the display medium 1 to express parts of different content in multiple specified directions, making it possible to display multiple contents with a wide color gamut and high brightness.

[0148] 17, the surface of shielding member W1 on the space A1 side is visible from viewpoint E1, but has a portion that cannot be seen from viewpoint E2 or viewpoint E3. The surface of shielding member W1 on the space A2 side is visible from viewpoint E2, but has a portion that cannot be seen from viewpoint E1 or viewpoint E3. The surface of shielding member W2 on the space A2 side is visible from viewpoint E2, but has a portion that cannot be seen from viewpoint E1 or viewpoint E3. The surface of shielding member W2 on the space A3 side is visible from viewpoint E3, but has a portion that cannot be seen from viewpoint E1 or viewpoint E2.

[0149] Each surface of the partition P is formed to be easily visible from one of three directions, and difficult to see from the other two directions. Each surface of the partition P has both the effect of emitting a color that forms content in one direction and the effect of blocking light from other directions. This allows the display medium 200 to display different content in three directions. The display medium 200 can also display content with a wide color gamut and high brightness in three directions. Since the influence of the line of sight from directions other than the specified direction is suppressed for each surface of the partition P, a suitable color can be given to the surface observed from the specified direction.

[0150] Next, a description will be given of a processing device that assigns colors to each pixel of the display medium 200. The processing device has a configuration similar to that of the processing device 110 according to the third embodiment shown in FIG.

[0151] The condition data 112 is data that specifies the direction in which the content is displayed on the display medium 200. The shape data 113 is parameters related to the partition P of the display medium 200, specifically, data such as the thickness l and the size of the virtual hemisphere when cutting the Voronoi surface.

[0152] The allocation unit 117 allocates colors to each pixel in the cell to be processed so that pixels seen from a first viewpoint in the cell to be processed display colors of each value of red, green, and blue, pixels seen from a second viewpoint in the cell to be processed display colors of red value, and pixels seen from a third viewpoint in the cell to be processed display colors of green value. The pixels to be allocated colors here are pixels in the cell to be processed that do not have protruding members and that are visible from any of the viewpoints.

[0153] The allocation unit 117 identifies, from among the pixels of the partition P in the cell to be processed, a group of pixels that are visible from a first viewpoint, a group of pixels that are visible from a second viewpoint, and a group of pixels that are visible from a third viewpoint.

[0154] The allocation unit 117 allocates a color to each pixel in each pixel group so that the RGB value to be expressed in the cell to be processed and the red and green values ​​of the RGB value can be expressed.

[0155] The processing device 110 repeats the process of assigning a color to each pixel for each cell, and outputs the correspondence between the pixel and the color in each cell as output data 115. By inputting the output data 115 to a manufacturing device such as a printer, a display medium 200 in which each pixel is colored with an appropriate color is output. The printer may be a 3D printer that is also capable of forming the partition P.

[0156] The display medium 200 of the fourth embodiment, like the display medium 1 of the first or second embodiment, is space-saving and can display content that is easily visible to both healthy people and people with minority color vision deficiency.

[0157] (Technology D) A display medium that displays three different contents in three directions, a substrate having a plurality of virtual cells; The cell is provided with a partition having a surface formed on a plane intersecting the base material, the partition having a portion exposed when the display medium is observed from each of three directions; the partition skeleton includes a part of a Voronoi surface in a Voronoi diagram having points virtually provided in each of the plurality of directions as generating points, displaying a first content that can be expressed using the three primary colors of red, green, and blue on pixels among the plurality of pixels that can be seen from a first viewpoint, displaying a second content obtained by extracting a red component from the first content on pixels among the plurality of pixels that can be seen from a second viewpoint, and displaying a third content obtained by extracting a green component from the first content on pixels among the plurality of pixels that can be seen from a third viewpoint; A person with color vision deficiency is allowed to view the composition of the content by changing the viewpoint and repeatedly viewing the second content and the third content. Display medium.

[0158] (Technology E) A display medium that displays three different contents in three directions, a substrate having a plurality of virtual cells; The cell is provided with a partition having a surface formed on a plane intersecting the base material, the partition having a portion exposed when the display medium is observed from each of three directions; The partition is provided so as to be in contact with an outer edge of the cell, and radially divides the space above the cell into the three directions from the cell, displaying a first content that can be expressed using the three primary colors of red, green, and blue on pixels among the plurality of pixels that can be seen from a first viewpoint, displaying a second content obtained by extracting a red component from the first content on pixels among the plurality of pixels that can be seen from a second viewpoint, and displaying a third content obtained by extracting a green component from the first content on pixels among the plurality of pixels that can be seen from a third viewpoint; A person with color vision deficiency is allowed to view the composition of the content by changing the viewpoint and repeatedly viewing the second content and the third content. Display medium.

[0159] The processing device 10 of the present embodiment described above is, for example, a general-purpose computer system including 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 a program loaded on the memory 902, thereby realizing each function of the processing device 10. Note that, like the processing device 10, the processing device 110 is also a general-purpose computer system.

[0160] The processing device 10 may be implemented in one computer or in multiple computers, and may also be a virtual machine implemented in a computer.

[0161] The program of the processing device 10 can be stored in a computer-readable recording medium such as a HDD, an SSD, a Universal Serial Bus (USB) memory, a Compact Disc (CD), a Digital Versatile Disc (DVD), or distributed via a network. The computer-readable recording medium is, for example, a non-transitory recording medium.

[0162] The present disclosure is not limited to the above-described embodiment, and various modifications are possible within the scope of the present disclosure. [Explanation of symbols]

[0163] 1,100,200 Display media 10,110 Processing equipment 11,111 Input image data 12,114 Cell color data 13,115 Output data 16,116 Calculation section 17,117 Allocated Part 112 Condition Data 113 Shape Data 901 CPU 902 Memory 903 Storage 904 Communication equipment 905 Input Device 906 Output Device A Space B Blue area C Cell G Green area H generating point K subcell L Layer M Base material N transparent layer P partition R red area T-shaped protruding member W Shielding material φ Azimuth

Claims

1. A display medium capable of displaying three contents for each of three viewpoints, the content displayed by the display medium is expressed by colors assigned to each of a plurality of pixels of the display medium; displaying a first content that can be expressed using three primary colors of red, green, and blue at pixels visible from a first viewpoint among the plurality of pixels; displaying a second content obtained by extracting a red component of the first content at pixels visible from a second viewpoint among the plurality of pixels; and displaying a third content obtained by extracting a green color component of the first content at pixels visible from a third viewpoint among the plurality of pixels. Display medium.

2. A display medium capable of displaying three contents corresponding to three azimuth angles at a predetermined elevation angle and three azimuth angles, A substrate that reflects light is provided, Dividing the substrate into a plurality of cells; Dividing each of the plurality of cells into three subcells corresponding to the three azimuth angles, a protruding member having a surface in the direction of the predetermined azimuth angle that blocks light is formed in each subcell corresponding to the predetermined azimuth angle; a subcell corresponding to the predetermined azimuth angle is observed from the predetermined elevation angle and azimuth angle; displaying a first content that can be expressed using three primary colors of red, green, and blue at pixels that are visible from a first viewpoint among the plurality of pixels of each of the sub-cells; displaying a second content obtained by extracting a red component of the first content at pixels visible from a second viewpoint among the plurality of pixels; and displaying a third content obtained by extracting a green color component of the first content at pixels visible from a third viewpoint among the plurality of pixels. Display medium.

3. A display medium that displays three different contents in three directions, a substrate having a plurality of virtual cells; a partition provided in each cell, the partition having a surface formed on a plane intersecting with the substrate and a portion exposed when the display medium is observed from each of the three directions; the partition radially divides a space above the cell in each of the three directions from the cell; displaying a first content that can be expressed using three primary colors of red, green, and blue on pixels that are visible from a first viewpoint among the plurality of pixels of the partition; displaying a second content obtained by extracting a red component of the first content at pixels visible from a second viewpoint among the plurality of pixels; and displaying a third content obtained by extracting a green color component of the first content at pixels visible from a third viewpoint among the plurality of pixels. Display medium.

4. A person with color vision deficiency can change his / her viewpoint and repeatedly view the second content and the third content, thereby allowing the person with color vision deficiency to visually recognize the composition of the content. The display medium according to any one of claims 1 to 3.

5. A processing device for assigning a color to each pixel of a display medium according to any one of claims 1 to 3, comprising: the display medium comprises a plurality of cells; a calculation unit that calculates red, green, and blue values ​​of a color to be displayed in a predetermined cell in the first content; displaying the colors of each of the red, green, and blue values ​​at pixels in the predetermined cell that are visible from the first viewpoint; displaying a color of said red value at pixels in said predetermined cell that are visible from said second viewpoint; To display the color of the green value in the pixel in the predetermined cell that is visible from the third viewpoint, an assigning unit that assigns a color to each pixel in the predetermined cell; A processing device comprising:

6. A program for causing a computer to function as the processing device according to claim 5.

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