Display medium, processing device, processing method and program

Abstract

To provide a space-saving display medium for displaying content being easy to see for healthy people and people with oligochromatic vision.SOLUTION: A display medium 1 displays content that can be visually recognized by healthy people and people with oligochromatic vision. The display medium 1 displays first content containing RGB components, in a first direction, and displays second content with luminance that is positively correlated with one of an R value and a G value of the RGB components, in a second direction.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a display medium, a processing device, a processing method, and a program. [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 of one embodiment of the present disclosure is a display medium that displays content visible to normal persons and persons with minority color vision, and displays a first content including RGB components in a first direction, and displays a second content having a luminance that is positively correlated with either the R value or the G value of the RGB components in a second direction.

[0010] A processing device according to one embodiment of the present disclosure includes an upper layer formed of a transparent material, having a plurality of upper cells, each of the upper cells having a color region, and a lower layer formed of a transparent material, having a plurality of lower cells, each of the lower cells having a color region, wherein the upper cells of the upper layer and cells including lower cells of the lower layer overlapping the upper cells are formed such that, when viewed from each of first and second directions, portions of the color regions of the lower cells where the color regions of the upper cells overlap are different from each other, and each of the upper cells and the lower cells are formed of a transparent material that is not given a color. a color region provided at a position away from the ends of each of the upper and lower cells, in a display medium having a plurality of pixels, the processing device for assigning colors to the color region, the color region having a position away from the ends of each of the upper and lower cells, the processing device having a calculation unit that calculates each RGB value of a color to be displayed in each cell for content to be displayed in the first direction, and an assignment unit that assigns a color to each pixel of the upper and lower cells so that, for each of the cells, a color of each calculated RGB value is displayed in the first direction, and a color having a brightness that is positively correlated with either one of the R value and the G value is displayed in the second direction.

[0011] A processing method according to one embodiment of the present disclosure includes an upper surface layer formed of a transparent member, having a plurality of upper surface cells, each of the plurality of upper surface cells having a color region, and a lower surface layer formed of a transparent member, having a plurality of lower surface cells, each of the plurality of lower surface cells having a color region, wherein cells including the upper surface cells of the upper surface layer and the lower surface cells of the lower surface layer overlapping with the upper surface cells are formed such that, when viewed from each of first and second directions, in the color regions of the lower surface cells, the portions where the color regions of the upper surface cells overlap are different from each other, and each of the upper surface cells and the lower surface cells has the color region and a transparent region to which no color is given, and the color regions are provided at positions away from the ends of each of the upper surface cells and the lower surface cells. a processing method for assigning colors to color areas in a display medium having a plurality of pixels, wherein each of the upper cell and the lower cell has the color area and a transparent area to which no color is given, the color area being located at a position away from the edge of each of the upper cell and the lower cell and having a plurality of pixels; a computer calculates each RGB value of a color to be displayed in the cell for content to be displayed in the first direction, and assigns colors to each pixel of the upper cell and the lower cell so that the cell displays colors of the calculated RGB values ​​in the first direction and displays a color having a brightness that is positively correlated with either one of the R value and the G value in the second direction.

[0012] A display medium of one embodiment of the present disclosure is a display medium that displays content visible to normal persons and persons with minority color vision, and displays a first content including RGB components in a first direction, a second content having a luminance that is positively correlated with the R value of the RGB components in a second direction, and a third content having a luminance that is positively correlated with the G value of the RGB components in a third direction.

[0013] A processing device according to one aspect of the present disclosure includes an upper surface layer formed of a transparent member, having a plurality of upper surface cells, each of the plurality of upper surface cells having a color region, and a lower surface layer formed of a transparent member, having a plurality of lower surface cells, each of the plurality of lower surface cells having a color region, wherein the upper surface cells of the upper surface layer and cells including lower surface cells of the lower surface layer overlapping with the upper surface cells are formed such that, when viewed from each of first to third directions, in the color regions of the lower surface cells, the portions where the color regions of the upper surface cells overlap are different from each other, and each of the upper surface cells and the lower surface cells has the color region and a transparent region to which no color is applied, and the color regions is a processing device that assigns colors to a color area in a display medium having a plurality of pixels, the processing device being provided at a position away from the ends of each of the upper and lower cells, and the processing device having the processing unit calculates each RGB value of a color to be displayed in each cell for content to be displayed in the first direction, and an assignment unit that assigns colors to each pixel of the upper and lower cells so that, for each cell, a color of each calculated RGB value is displayed in the first direction, a color having a brightness that is positively correlated with the calculated R value is displayed in the second direction, and a color having a brightness that is positively correlated with the calculated G value is displayed in the third direction.

[0014] A processing method according to one embodiment of the present disclosure includes an upper layer formed of a transparent member, having a plurality of upper cells, each of the plurality of upper cells having a color region, and a lower layer formed of a transparent member, having a plurality of lower cells, each of the plurality of lower cells having a color region, wherein the upper cells of the upper layer and cells including lower cells of the lower layer overlapping the upper cells are formed such that, when viewed from each of first to third directions, portions of the color regions of the lower cells overlapping with the color regions of the upper cells are different from each other, and each of the upper cells and the lower cells has the color region and a transparent region to which no color is given, and the color regions are provided at positions away from the ends of the respective cells of the upper cells and the lower cells, and include a plurality of pixels. A processing method for assigning colors to color areas on a display medium, wherein each of the top cell and the bottom cell has the color area and a transparent area to which no color is given, the color area being located at a position away from the edge of each of the top cell and the bottom cell and having a plurality of pixels, a computer calculates each RGB value of a color to be displayed in the cell for content to be displayed in the first direction, and assigns colors to each pixel of the top cell and the bottom cell so that the cell displays colors of the calculated RGB values ​​in the first direction, displays a color having a brightness that is positively correlated with the calculated R value in the second direction, and displays a color having a brightness that is positively correlated with the calculated G value in the third direction.

[0015] One aspect of the present disclosure is a program that causes a computer to function as the processing device. Effect of the Invention

[0016] 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]

[0017] [Figure 1] FIG. 1 is a perspective view of a display medium according to a first embodiment. [Diagram 2] FIG. 2 is a side view of the display medium according to the first embodiment. [Diagram 3] FIG. 3 is a diagram illustrating the upper and lower layers of the display medium according to the first embodiment. [Figure 4] FIG. 4 is a side view of the cell according to the first embodiment. [Diagram 5] FIG. 5 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 6] FIG. 6 is a flowchart illustrating a process for determining colors to be assigned to a display medium according to the first embodiment. [Figure 7] FIG. 7 is a perspective view of a display medium according to the second embodiment. [Figure 8] FIG. 8 is a diagram illustrating an example of a cell of a display medium according to the second embodiment. [Figure 9] FIG. 9 is a diagram illustrating an example of covered pixels and exposed pixels in a display medium according to the second embodiment. [Figure 10] FIG. 10 is a diagram illustrating functional blocks of a processing device that generates output data for manufacturing 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(a) is a front view of a partition used in a display medium according to a third embodiment, and FIG. 12(b) is a right side view. [Figure 13] FIG. 13 is a cross-sectional view of a partition used in a display medium according to the third embodiment. [Figure 14] FIG. 14 is a diagram illustrating the hardware configuration of a computer used in the processing device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] 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.

[0019] (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.

[0020] 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.

[0021] In this disclosure, a display medium displays a first content in a first direction, the first content having RGB components. The display medium displays a second content in a second direction, the second content having a luminance that is positively correlated with the R value of the RGB components. The display medium displays a third content in a third direction, the third content having a luminance that is positively correlated with the G value of the RGB components.

[0022] The display surface of the display medium is divided into a number of cells. Each cell has a number of pixels. Content displayed by the display medium according to the embodiment of the present disclosure is expressed by colors assigned to each of the pixels on the display medium.

[0023] The display medium displays a first content that can be expressed using the three primary colors RGB (Red, Green, Blue) at pixels of the plurality of pixels that are visible from a first viewpoint. The display medium displays a second content that has a luminance that is positively correlated with the value of the red component of the first content at pixels of the plurality of pixels that are visible from a second viewpoint. The display medium displays a third content that has a luminance that is positively correlated with the value of the green component of the first content at pixels of the plurality of pixels that are visible from a third viewpoint.

[0024] In the present disclosure, a normal person understands the composition of the content from each of the red, green, and blue components of the first content. A color vision deficiency sufferer has difficulty recognizing red or green, and can understand the composition of the content expressed by the blue component of red, green, and blue from the blue component of red, green, and blue of each cell of the first content. On the other hand, a color vision deficiency sufferer cannot understand the composition of the content expressed by each of the red and green components even if he or she sees the first content. Therefore, a color vision deficiency sufferer understands the composition of the content expressed by the red component from the difference in luminance of each cell of the second content by using the display medium according to the present disclosure. A color vision deficiency sufferer understands the composition of the content expressed by the green component from the difference in luminance of each cell of the third content. A color vision deficiency sufferer can view the composition expressed by each color component from the first content, the second content, and the third content by changing the viewpoint and repeating the display medium. Here, the composition of the content refers to the contours (edges) of the subject or background in the content.

[0025] 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.

[0026] The processing unit comprises a calculation unit and an allocation unit.

[0027] The calculation unit calculates the red, green, and blue values ​​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. The first content only needs to be convertible to the three primary colors of red, green, and blue, and may be formed in a red, green, and blue color model or in another color model such as CMYK. CMYK stands for Cyan, Magenta, Yellow, and blacK.

[0028] The allocation unit assigns colors to each pixel in a specified cell so that pixels viewed from a first viewpoint in the specified cell display colors of each value of red, green, and blue, pixels viewed from a second viewpoint in the specified cell display a luminance that has a positive correlation with the red value of red, green, and blue, and pixels viewed from a third viewpoint in the specified cell display a luminance that has a positive correlation with the green value of red, green, and blue.

[0029] The inventor has found that although a person with minority color vision has difficulty recognizing red or green, by viewing content in which red or green is converted into luminance, the person can grasp the composition in the content and understand the content. In addition, although there are multiple types of minority color vision, the inventor has found that many people with minority color vision can grasp the composition in the content by viewing the content in which red and green are converted into luminance.

[0030] A display medium disclosed in a patent document or the like is capable of displaying a plurality of different contents in a plurality of directions. The display medium displays a content that is easily visible to a normal person in a certain direction. Furthermore, the display medium displays a content for a color vision deficiency holder in the other two directions. The content for a color vision deficiency holder is a content in which elements that are difficult for a color vision deficiency holder to see in a content that is easily visible to a normal person are converted into elements that are easily visible to a color vision deficiency holder. The content that is easily visible to a normal person is a content in which each cell is formed of RGB. The content converted into elements that are easily visible to a color vision deficiency holder is a content in which the red shade of each cell is converted into brightness intensity, and a content in which the green shade of each cell is converted into brightness intensity.

[0031] A person with color vision deficiency views the three contents in sequence repeatedly by switching the viewing direction of the display medium or by switching the orientation of the display medium. The person with color vision deficiency is able to grasp the composition of the content, specifically the difference in the shade of each color, from the content in which the shade of red is expressed by the strength of luminance and the content in which the shade of green is expressed by the strength of luminance.

[0032] 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.

[0033] Furthermore, the second and third contents displayed by the display medium are generated by reflecting the shading of each color component of the contents formed by RGB, so the composition of the contents 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 shading of red or shading of green can be recognized as the intensity of brightness at the same position. The display medium, combined with the afterimage of the intensity of brightness, makes it possible to grasp the composition of the contents.

[0034] 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 third embodiments. Here, the display media will be described in three embodiments, but the present invention is not limited to these. In a display medium that can display different content in different directions, content formed with RGB (red, green, blue) that is easy for normal people to see, content in which red is converted into luminance, and content in which green is converted into luminance may be displayed.

[0035] (First embodiment) A display medium 1 according to a first embodiment will be described with reference to FIG. 1. The display medium 1 according to the first embodiment has the configuration of the display medium described in Patent Document 2. As shown in FIG. 1, the display medium 1 has a plurality of cells C on its surface. In the example shown in FIG. 1, the user's line of sight is located upward in the Z-axis direction. In the example shown in FIG. 1, the display medium 1 has a rectangular parallelepiped shape, but the shape is not important. The display medium 1 may be formed into a sheet shape or a three-dimensional shape.

[0036] 2, the display medium 1 has an upper layer Lu and a lower layer Lb. The names of the upper layer Lu and the lower layer Lb do not depend on the arrangement of the display medium 1. In the first embodiment, the layer closer to the user's viewpoint is called the upper layer Lu. The layer farther from the user's viewpoint is called the lower layer Lb.

[0037] As shown in FIG. 2 and FIG. 3, the upper layer Lu and the lower layer Lb are formed on the XY plane and arranged in 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 the light from a plurality of directions passing through the upper layer Lu and the lower layer Lb. Each content is viewed at each viewpoint provided at the position where the light from a plurality of directions passing through the upper layer Lu and the lower layer Lb is incident. The display medium 1 displays a plurality of contents because the combination of the color of the portion passing through the upper layer Lu and the color of the portion passing through the lower layer Lb is different for each direction. The display medium 1 displays the contents at three different viewpoints above the upper layer Lu and the lower layer Lb in the Z-axis direction. The three different viewpoints differ in at least the value in the X direction and the value in the Y direction.

[0038] In the first embodiment, the light in a predetermined direction used when displaying the content is emitted from at least a direction facing the viewpoint with respect to the upper layer Lu and the lower layer Lb. When the viewpoint is provided above the upper layer Lu and the lower layer Lb in the Z-axis direction, the light may be emitted from below the upper layer Lu and the lower layer Lb in the Z-axis direction, and the position of the light source does not matter. The light directed from below the lower layer Lb in the Z-axis direction to above may be, for example, light from a light source provided at an arbitrary position reflected by the base material M, or light from a light source provided on the base material M.

[0039] 2, a transparent layer N is formed between an upper layer Lu and a lower layer Lb. A base material M is provided on the lower layer Lb in the opposite direction to the transparent layer N in the Z-axis direction. The display medium 1 is formed by stacking these members in the order of the base material M, the lower layer Lb, the transparent layer N, and the upper layer Lu in the Z-axis direction.

[0040] The transparent layer N is preferably formed of a material that transmits a large amount of light without absorbing the color components of 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 upper layer Lu and the lower layer Lb 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 upper layer Lu and the lower layer Lb to be easily visible.

[0041] As shown in FIG. 2 and FIG. 3, the upper surface layer Lu is formed of a transparent member and has a plurality of upper surface cells Cu. Each of the plurality of upper surface cells Cu has a color region. The lower surface layer Lb is formed of a transparent member and has a plurality of lower surface cells Cb. Each of the plurality of lower surface cells Cb has a color region. By a predetermined definition of the positions of the upper surface cells Cu and the lower surface cells Cb, a printer or the like that gives colors to the color regions of the upper surface cells Cu and the lower surface cells Cb may specify the positions of each color region, and the positions of the upper surface cells Cu and the lower surface cells Cb may not be visually recognized. For example, there may be no clear division such as a line, partition, or recess between two adjacent upper surface cells Cu or two lower surface cells Cb. The two adjacent upper surface cells Cu or two lower surface cells Cb may not be physically separated. Furthermore, at the boundary between two adjacent upper surface cells Cu or two lower surface cells Cb, the ends of the two cells may be given the same color or the same colorlessness, so that the adjacent cells C are not necessarily visible.

[0042] In the first embodiment, each top surface cell Cu of the top surface layer Lu and each bottom surface cell Cb of the bottom surface layer Lb are formed by dividing each layer in the same manner. Each top surface cell Cu of the top surface layer Lu is formed at a position shifted in the Z-axis direction from each bottom surface cell Cb of the bottom surface layer Lb. More specifically, as shown in FIG. 3, in the embodiment of the present invention, the top surface cell Cu of the top surface layer Lu is formed at a position shifted in the Z-axis direction from the bottom surface cell Cb of the bottom surface layer Lb. The same applies to other cells. In the first embodiment, the relationship between cells formed at positions shifted in the Z-axis direction, such as the top surface cell Cu and the bottom surface cell Cb, is called "corresponding".

[0043] In the first embodiment, cell C includes an upper surface cell Cu of an upper surface layer Lu and a lower surface cell Cb of a lower surface layer Lb overlapping the upper surface cell Cu. Cell C is specified by a combination of corresponding upper surface cells Cu and lower surface cells Cb among each upper surface cell Cu of the upper surface layer Lu and each lower surface cell Cb of the lower surface layer Lb.

[0044] As shown in Figures 2 to 4, the upper layer Lu is formed of a transparent material and has a plurality of upper cells Cu. Each of the plurality of upper cells Cu has color regions G11 and G12. The lower layer Lb is formed of a transparent material and has a plurality of lower cells Cb. Each of the plurality of lower cells Cb has color regions G21, G22, G23, G24, G25, and G26. Each of the color regions G11, G12, G21, G22, G23, G24, G25, and G26 is formed of one or more pixels. Here, a pixel is a unit to which the manufacturing device of the display medium 1 gives the same color.

[0045] In the first embodiment, a case where each upper surface cell Cu and each lower surface cell Cb has a color region of the same shape will be described, but the shape may be different for each upper surface cell Cu or lower surface cell Cb. In the first embodiment, a case where multiple color regions are provided in the X-axis direction in each of the upper surface layer Lu and the lower surface layer Lb will be described, but one color region may be provided. In addition, a case where one color region is provided in the Y-axis direction will be described, but multiple color regions may be provided. Furthermore, a case where multiple color regions are provided adjacent to each other will be described, but multiple color regions may be provided discretely, such as by providing a transparent region between the multiple color regions.

[0046] With reference to FIG. 4, an upper cell Cu and a lower cell Cb forming one cell will be described. In the first embodiment, a transparent region is provided at the boundary between the upper cell Cu and the lower cell Cb. 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 color region. The color region is formed by applying ink to each layer. The ink may be a dye ink or a pigment ink. Note that the non-hatched portion in FIG. 4 is a transparent portion where the ink is not applied. One color region is formed by one or more pixels. In the present disclosure, one color is uniformly provided within one color region G11. The same applies to the other color regions G12 to G26.

[0047] The positions of the top cell Cu and the bottom cell Cb are set so that in one cell, light passing through the color region of the top cell Cu passes through the bottom cell Cb, and light passing through the color region of the bottom cell Cb passes through the top cell Cu. In the first embodiment, a case is described in which the top cell Cu and the bottom cell Cb included in one cell are shifted in the Z-axis direction, but this is not limited to this. The corresponding top cell Cu and the bottom cell Cb may be shifted in an oblique direction, specifically, not only in the Z-axis direction but also in the X-axis direction or the Y-axis direction.

[0048] In the first embodiment, the cells are formed such that when viewed from each of the first to third directions, the color region of the bottom cell Cb overlaps with the color region of the top cell Cu in different portions. This allows the cells to display different colors in the first to third directions. Here, different from each other means not completely identical, and includes not only completely different colors, but also colors that are at least partially the same and partially different.

[0049] For example, in the first direction of Fig. 4(a), the color regions G11 and G12 of the top cell Cu overlap with the color regions G23 and G24 of the bottom cell Cb. In the second direction of Fig. 4(b), the color regions G11 and G12 of the top cell Cu overlap with the color regions G25 and G26 of the bottom cell Cb. In the third direction of Fig. 4(c), the color regions G11 and G12 of the top cell Cu overlap with the color regions G21 and G22 of the bottom cell Cb.

[0050] In the example shown in Fig. 4, the color region of the bottom cell Cb does not completely overlap with the color region of the top cell Cu in the first to third directions, but they may overlap partially. For example, in another embodiment, the color regions G23 and G24 may overlap the color region of the top cell Cu in the first direction. The color regions G24 and G25 may overlap the color region of the top cell Cu in the second direction, and the color regions G22 and G23 may overlap the color region of the top cell Cu in the third direction.

[0051] In addition, when the ink used in the color region is a highly transparent ink such as a dye ink, the user can visually recognize a color obtained by mixing the colors of the overlapping color regions at each viewpoint in each viewing direction. In FIG. 4(a), the user visually recognizes a color obtained by mixing the colors of G11 and G23, and a color obtained by mixing the colors of G12 and G24. Furthermore, the user visually recognizes a color obtained by mixing the colors of G11 and G23, a color obtained by mixing the colors of G12 and G24, and a color obtained by mixing the colors of G21, G22, G25, and G26 due to juxtaposition additive color mixing.

[0052] On the other hand, if the ink used in the color region is a low-transparency ink such as a pigment ink, the user can see the color close to the viewpoint in the viewing direction. In Fig. 4(a), the user sees the color G11 and the color G12. Furthermore, the user sees a mixture of G11 and G12 and the colors G21, G22, G25, and G26 due to juxtaposition additive color mixing.

[0053] In this way, in each cell of the display medium 1 according to the first embodiment, the portions of the color region of the bottom cell Cb that overlap with the color region of the top cell Cu differ in the first, second and third directions, and therefore different contents can be displayed in the three directions.

[0054] Specifically, the display medium 1 displays a first content including RGB components in a first direction. The display medium 1 displays a second content having a luminance positively correlated with the R value of the RGB components in a second direction. The display medium 1 displays a third content having a luminance positively correlated with the G value of the RGB components in a third direction. Note that the display medium 1 is only required to display three contents in three different directions, and the three directions are not limited to those shown in FIG. 4.

[0055] Here, the ratio of the R value to the R range of the RGB components of the first content may correspond to the ratio of the luminance value to the luminance range of the second content. Similarly, the ratio of the G value to the G range of the RGB components of the first content may correspond to the ratio of the luminance value to the luminance range of the third content. For example, when each value of the RGB components is expressed in 256 steps in the first content and the luminance in the second content and the third content is expressed in 256 steps, it is preferable that the R value of the RGB components of the first content is the same as the luminance value of the second content. It is preferable that the G value of the RGB components of the first content is the same as the luminance value of the third content. Note that, from the viewpoint of viewability, the luminance in the second content may be a predetermined multiple or an offset may be given to the R value in the first content. Similarly, the luminance in the third content may be a predetermined multiple or an offset may be given to the G value in the first content.

[0056] The display medium 1 displays a first content that can be converted into each of the RGB components, as well as a second content in which the shade of the R component is converted into the intensity of luminance, and a third content in which the shade of the G component is converted into the intensity of luminance. A normal person sees the first content. A person with minority color vision due to green cone deficiency or red cone deficiency sees the composition of the content formed by the B component of the first content, and further changes the viewpoint and repeatedly views the second content and the third content, thereby being able to see the composition of the content formed by the R component and the G component, respectively.

[0057] In the first embodiment, a person with color vision deficiency can recognize a composition expressed in the respective shades of RGB by alternating between a viewpoint on display medium 1 where the first content is seen, a viewpoint where the second content is seen, and a viewpoint where the third content is seen, specifically by changing the viewpoint from directly above, diagonally upward to the left, and diagonally upward to the right with respect to display medium 1.

[0058] (Processing device) With reference to Fig. 5, 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.

[0059] The input image data 11 is an image of the content to be displayed by the display medium 1. The input image data 11 has a plurality of pixels, and each pixel is associated with a predetermined color. The input image data 11 is content that can be seen by a healthy person. The input image data 11 can be converted into each component of RGB.

[0060] The cell color data 12 is data on the color to be expressed in each cell of the display medium 1 .

[0061] The output data 13 is data that associates the value of the color printed on each layer with its position when the manufacturing device forms the display medium 1. The output data 13 specifies the color to be applied to each color area of ​​each cell. In the example shown in Fig. 4, the output data 13 associates the color to be applied to each of the color areas G11, G12, G21, G22, G23, G24, G25, and G26 with each cell.

[0062] The calculation unit 16 calculates each RGB value of the color to be displayed in each cell for the content to be displayed in the first direction. The calculation unit 16 calculates each red, green, and blue (RGB) value of the color to be displayed in an upper cell Cu and a lower cell Cb of a certain cell in the first content expressed in RGB. The calculation unit 16 calculates the RGB value corresponding to the position of the cell to be processed in the input image data 11 as the RGB value of the color to be displayed in the upper cell Cu and lower cell Cb of this pair. The calculation unit 16 calculates the RGB value for each cell and outputs it to the cell color data 12.

[0063] The allocation unit 17 determines a color to be allocated to each color region for each cell, and outputs the determined color to the output data 13. The allocation unit 17 allocates colors to each pixel of the upper surface cell Cu and the lower surface cell Cb so as to display, for each cell, the color of each calculated RGB value in the first direction, the color having a luminance positively correlated with the calculated R value in the second direction, and the color having a luminance positively correlated with the calculated G value in the third direction.

[0064] The allocation unit 17 assigns a color to each pixel for the cell being processed so that the ratio of the R value to the R value range of the RGB components of the first content corresponds to the ratio of the luminance value to the luminance range of the second content, and the ratio of the G value to the G value range of the RGB components of the first content corresponds to the ratio of the luminance value to the luminance range of the third content.

[0065] The allocation unit 17 searches for a color of each pixel that achieves the RGB calculated by the calculation unit 16 with a combination of each pixel seen from a first direction, achieves the luminance corresponding to the shade of R calculated by the calculation unit 16 with a combination of each pixel seen from a second direction, and achieves the luminance corresponding to the shade of G calculated by the calculation unit 16 with a combination of each pixel seen from a third direction. The allocation unit 17 may search by brute force or may search by optimization. For example, the allocation unit 17 sets, as a target, the RGB value to be displayed in the first direction, the luminance to be displayed in the second direction, and the luminance to be displayed in the third direction. The allocation unit 17 sets, as an evaluation function, the difference between the RGB value to be displayed in the first direction, the luminance to be displayed in the second direction, and the luminance to be displayed in the third direction, which are realized by the color of each pixel searched for, and the target. The allocation unit 17 determines a color to be assigned to each pixel so that the evaluation function is minimized.

[0066] After determining the color to be assigned to each pixel in each cell, the assignment unit 17 outputs it to the output data 13.

[0067] With reference to FIG. 6, the process of assigning a color to each pixel of a given target cell will now be described.

[0068] First, in step S101, the processing device 10 obtains a pixel value at the position of a cell to be processed from the input image data 11. In step S102, the processing device 10 breaks down the pixel value obtained in step S101 into RGB values.

[0069] In step S103, the processing device 10 calculates a color combination for each pixel, displaying the acquired pixel value in the first direction, displaying the luminance corresponding to the R value decomposed in step S102 in the second direction, and displaying the luminance corresponding to the G value decomposed in step S102 in the third direction.

[0070] In step S104, the processor 10 assigns the calculated color to each pixel of the cell being processed.

[0071] The processing device 10 repeats the process shown in Fig. 6 for each cell. The processing device 10 outputs the correspondence between pixels and colors in each cell as output data 13. The output data 13 is input to a manufacturing device such as a printer, whereby an upper surface layer Lu and a lower surface layer Lb in which each pixel is colored with an appropriate color are output. The display medium 1 is formed from the substrate M, the lower surface layer Lb, and the third layer.

[0072] The display medium 1 according to the first embodiment is space-saving and can display content that is easily visible to both normal people and people with color vision deficiency. The display medium 1 according to the first embodiment displays, in addition to content expressed in RGB, a second content in which the shades of R are converted into luminance strength and a third content in which the shades of G are converted into luminance strength. The display medium 1 displays content that is easily visible not only to normal people but also to people with color vision deficiency who have difficulty recognizing at least one of red and green. The display medium 1 allows more users to view the content.

[0073] (Modification of the first embodiment) In the first embodiment, a case where three contents are displayed in three directions will be described, but in a modified example, a case where two contents are displayed in two directions will be described.

[0074] The display medium 1 in the modified example displays a first content including RGB components in a first direction, and displays a second content having a luminance that is positively correlated with either the R value or the G value of the RGB components in a second direction.

[0075] When the luminance of the second content has a positive correlation with the value of R, the ratio of the R value to the range of the R value of the RGB components of the first content corresponds to the ratio of the luminance value to the range of the luminance of the second content. The display medium 1 displays a first content including RGB components in a first direction in each cell viewed from a first viewpoint in a first direction, and displays a second content in a second direction in which the luminance of each cell viewed from a second viewpoint in a second direction has a positive correlation with the R value of the RGB components corresponding to each cell. The allocation unit 17 of the processing device 10 according to the modified example allocates colors to each pixel of the upper surface cell and the lower surface cell so as to display, for each cell, the color of each RGB value calculated by the calculation unit 16 in the first direction, and to display a color having a luminance positively correlated with the R value in the second direction.

[0076] The display medium 1 according to the modified example displays, as the first content, a content expressed in RGB, and, as the second content, a content in which the shade of R is converted into the intensity of luminance. The display medium 1 displays content that is easy to view for normal people as well as for people with color vision who have difficulty perceiving red. People with color vision who have difficulty perceiving red can understand the composition of the content represented by the green and blue components of red, green, and blue from the green and blue components of red, green, and blue of each cell of the first content. People with color vision who have difficulty perceiving red can understand the composition of the content represented by the red component from the difference in luminance of each cell of the second content.

[0077] When the luminance of the second content has a positive correlation with the G value, the ratio of the G value to the range of the G value of the RGB components of the first content corresponds to the ratio of the luminance value to the range of the luminance of the second content. The display medium 1 displays a first content including RGB components in a first direction in each cell viewed from a first viewpoint in a first direction, and displays a second content in a second direction in which the luminance of each cell viewed from a second viewpoint in a second direction has a positive correlation with the G value of the RGB components corresponding to each cell. The allocation unit 17 of the processing device 10 according to the modified example allocates colors to each pixel of the upper surface cell and the lower surface cell so as to display, for each cell, the color of each RGB value calculated by the calculation unit 16 in the first direction, and to display a color having a luminance positively correlated with the G value in the second direction.

[0078] The display medium 1 according to the modified example displays, as the first content, a content expressed in RGB, and, as the second content, a content in which the shade of G is converted into the intensity of luminance. The display medium 1 displays content that is easy to view for normal people as well as for people with color vision deficiency who have difficulty perceiving green. People with color vision deficiency who have difficulty perceiving green can understand the composition of the content expressed by the red and blue components of red, green, and blue from the red and blue components of red, green, and blue of each cell of the first content. People with color vision deficiency who have difficulty perceiving green can understand the composition of the content expressed by the green component from the difference in luminance of each cell of the second content.

[0079] The display medium 1 according to the modified example of the first embodiment can display content that is easily visible to both normal people and people with minority color vision, while saving space.

[0080] (Second embodiment) In the first embodiment, a case has been described in which a display medium is formed using the technique described in Patent Document 2. In the second embodiment, a case has been described in which a display medium 100 is formed using the technique described in Patent Document 1.

[0081] The display medium 100 according to the second 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.

[0082] In the second embodiment, a display medium 100 has a plurality of cells on its surface. The cell C has a protruding member having a light-shielding property and a color region on its surface. The cell C is formed so that the color regions viewed are different when viewed from each of the first to third directions. Here, different color regions means that they are not completely the same, and includes not only the case where they are completely different, but also the case where they are at least partially the same and partially different. The display medium 100 displays a first content including RGB components in each cell viewed from a first viewpoint in a first direction. The first content is formed in each pixel of each cell viewed from the first viewpoint. The display medium 100 displays a second content in a second direction, in which the luminance of each cell viewed from a second viewpoint in a second direction is positively correlated with the R value of the RGB component corresponding to each cell. The second content is formed in each pixel of each cell viewed from the second viewpoint. The display medium 100 displays a third content in a third direction, in which the luminance of each cell seen from a third viewpoint in the third direction is positively correlated with the value of G of the RGB component corresponding to each cell. The third content is formed by each pixel of each cell seen from the third viewpoint.

[0083] The display medium 100 according to the second embodiment, like the first embodiment, is space-saving and can display content that is easily visible to both normal people and people with minority color vision.

[0084] As shown in Fig. 7, 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 be in a three-dimensional shape. The upper surface of the substrate 101 may be flat or curved.

[0085] 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. 8, 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.

[0086] 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.

[0087] 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.

[0088] From a given elevation and azimuth angle, the colored portion of the subcell corresponding to the given azimuth angle is observed.

[0089] 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.

[0090] In the second 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 this is not limiting. The correspondence between the azimuth angles and the contents to be displayed is determined appropriately.

[0091] With reference to Fig. 8, 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.

[0092] 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 on the surface of the display medium 100. 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.

[0093] Such a display medium 100 according to the second embodiment can display three contents in three directions. The display medium 100 can display a first content including RGB components at a first viewpoint on an azimuth angle φ0, at pixels seen from the first viewpoint. The display medium 100 can display a second content at a second viewpoint on an azimuth angle φ1, at pixels seen from the second viewpoint, where the luminance of each cell is positively correlated with the R value of the RGB component corresponding to each cell. The display medium 100 can display a third content at a third viewpoint on an azimuth angle φ2, at pixels seen from the third viewpoint, where the luminance of each cell is positively correlated with the G value of the RGB component corresponding to each cell.

[0094] In the second 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.

[0095] Consider the case where a protruding member T1 is formed in sub-cell K1, as shown in FIG. 9. When a user observes from a direction φ1 parallel to the protruding member T1, almost all pixels in sub-cell K1 can be confirmed. However, a shielded portion K1a, which is a pixel that is not observed, is formed in sub-cell K1. Also, an exposed portion K2b, which is a pixel that is observed in sub-cell 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.

[0096] Next, processing unit 110, which assigns a color to each pixel of display medium 100, will be described.

[0097] 10, the processing device 110 includes input image data 111, condition data 112, shape data 113, cell color data 114, and output data 115, and includes 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.

[0098] 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.

[0099] 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.

[0100] 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 a color including RGB components, pixels seen from a second viewpoint in the cell to be processed display a color having a luminance positively correlated with the R value of the RGB components, and pixels seen from a third viewpoint in the cell to be processed display a color having a luminance positively correlated with the G value of the RGB components. The pixels to be allocated colors here are those in the cell to be processed where no protruding members are formed.

[0101] 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. 9, 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.

[0102] The allocation unit 117 allocates a color to each pixel in each pixel group so that the RGB values ​​to be expressed in the cell to be processed, the luminance corresponding to the red value of the RGB, and the luminance corresponding to the green value can be expressed.

[0103] 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.

[0104] The display medium 100 of the second embodiment, like the display medium 1 of the first embodiment, is space-saving and can display content that is easily visible to both healthy people and people with minority color vision deficiency.

[0105] (Technology A) 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; From the predetermined elevation and azimuth angles, a subcell corresponding to the predetermined azimuth angle is observed; displaying a first content including RGB components at pixels among the plurality of pixels that are visible from a first viewpoint, displaying a second content at pixels among the plurality of pixels that are visible from a second viewpoint, the luminance of each cell being positively correlated with an R value of the RGB component corresponding to each cell, and displaying a third content at pixels among the plurality of pixels that are visible from a third viewpoint, the luminance of each cell being positively correlated with a G value of the RGB component corresponding to each cell; A person with color vision deficiency can visually recognize the composition of the content by changing the viewpoint and repeatedly viewing the first content, the second content, and the third content. Display medium.

[0106] (Technology B) A processing device for assigning a color to each pixel of a display medium according to the technology A, 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 a color including RGB components in a pixel that is visible from the first viewpoint in the predetermined cell; displaying a color having a luminance positively correlated with an R value of the RGB component in a pixel in the predetermined cell that is visible from the second viewpoint; In order to display a color having a luminance positively correlated with the G value of the RGB component in the pixel in the predetermined cell that is seen from the third viewpoint, an assigner for assigning a color to each pixel in the predetermined cell; A processing device comprising:

[0107] (Modification of the second embodiment) In the second embodiment, a case where three contents are displayed in three directions will be described, but in the modified example, a case where two contents are displayed in two directions will be described. A display medium 100 according to the modified example of the second embodiment displays a first content including RGB components in a first direction, and displays a second content having a luminance positively correlated with either one of the R value and the G value of the RGB components in a second direction, similar to the display medium 1 according to the modified example of the first embodiment.

[0108] When the luminance of the second content has a positive correlation with the value of R, the display medium 100 displays the first content including RGB components at pixels among the plurality of pixels that are seen from a first viewpoint, and displays the second content at pixels among the plurality of pixels that are seen from a second viewpoint, in which the luminance of each cell is positively correlated with the R value of the RGB component corresponding to each cell. The allocation unit 117 of the processing device 110 allocates colors to each pixel in a predetermined cell so that the pixels in the predetermined cell that are seen from the first viewpoint display a color including RGB components, and the pixels in the predetermined cell that are seen from the second viewpoint display a color having a luminance positively correlated with the R value of the RGB component. The display medium 100 displays content that is easy to view not only for healthy people, but also for people with minority color vision who have difficulty perceiving red.

[0109] When the luminance of the second content has a positive correlation with the value of G, the display medium 100 displays the first content including RGB components at pixels among the plurality of pixels that are seen from a first viewpoint, and displays the second content at pixels among the plurality of pixels that are seen from a second viewpoint, in which the luminance of each cell is positively correlated with the G value of the RGB component corresponding to each cell. The allocation unit 117 of the processing device 110 allocates colors to each pixel in a predetermined cell so that the pixels in the predetermined cell that are seen from the first viewpoint display a color including RGB components, and the pixels in the predetermined cell that are seen from the second viewpoint display a color having a luminance positively correlated with the G value of the RGB component. The display medium 100 displays content that is easy to view not only for normal people, but also for people with minority color vision who have difficulty perceiving green.

[0110] The display medium 100 according to the modified example of the second embodiment can display content that is easily visible to both normal people and people with minority color vision, while saving space.

[0111] (Third embodiment) In the first embodiment, a case has been described in which a display medium is formed using the technique described in Patent Document 2. In the second embodiment, a case has been described in which a display medium 200 is formed using the technique described in Patent Document 3.

[0112] The display medium 200 according to the third 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.

[0113] In the third embodiment, a display medium 200 has a plurality of cells on its surface. The cells are provided with partitions having color regions, which radially divide a space on the cell C into three directions. The cell C is formed so that the color regions viewed are different when viewed from each of the first to third directions. Here, different color regions means that the color regions are not completely the same, and includes not only cases where the color regions are completely different, but also cases where the color regions are at least partially the same and partially different. The display medium 200 displays a first content including RGB components in each cell viewed from a first viewpoint in a first direction. The first content is formed in each pixel of each cell viewed from the first viewpoint. The display medium 200 displays a second content in a second direction, in which the luminance of each cell viewed from a second viewpoint in a second direction is positively correlated with the R value of the RGB component corresponding to each cell. The second content is formed in each pixel of each cell viewed from the second viewpoint. The display medium 200 displays a third content in a third direction, in which the luminance of each cell seen from a third viewpoint in the third direction is positively correlated with the value of G of the RGB component corresponding to each cell. The third content is formed by each pixel of each cell seen from the third viewpoint.

[0114] The display medium 200 according to the third embodiment, like the first embodiment, is space-saving and can display content that is easily visible to both normal people and people with minority color vision.

[0115] 11, 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.

[0116] 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.

[0117] 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.

[0118] 12, the partition P is formed so as to radially divide the space on the cell C in three directions from a point on the cell C. In the third 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.

[0119] 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.

[0120] Partition P has a surface having a plurality of pixels. Display medium 200 displays a first content including RGB components at pixels among the plurality of pixels that are visible from a first viewpoint. Display medium 200 displays a second content at pixels among the plurality of pixels that are visible from a second viewpoint, in which the luminance of each cell is positively correlated with the R value of the RGB component corresponding to each cell. Display medium 200 displays a third content at pixels among the plurality of pixels that are visible from a third viewpoint, in which the luminance of each cell is positively correlated with the G value of the RGB component corresponding to each cell.

[0121] The combination of the viewpoint and the content to be displayed for that viewpoint is appropriately set. For example, a content in which the brightness of each cell is positively correlated with the G value of the RGB component corresponding to each cell may be displayed in the pixels seen from the second viewpoint, and a content in which the brightness of each cell is positively correlated with the R value of the RGB component corresponding to each cell may be displayed in the pixels seen from the third viewpoint.

[0122] A person with color vision deficiency can visually recognize the composition of the content by changing the viewpoint and repeatedly viewing the first content, the second content, and the third content.

[0123] The shape of partition P will be described with reference to Fig. 13. In the third 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.

[0124] In the example shown in Fig. 13, 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] A portion of the surface of the partition P that is exposed when the display medium 200 is observed from a predetermined specified direction among the three directions has a portion that is blocked when the display medium 200 is observed from a direction other than the predetermined specified direction among 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 200 to express parts of different contents in multiple specified directions, making it possible to display multiple contents with a wide color gamut and high brightness.

[0129] 13, 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.

[0130] 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.

[0131] 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 second embodiment shown in FIG.

[0132] 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.

[0133] 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 a color including RGB components, pixels seen from a second viewpoint in the cell to be processed display a color having a luminance positively correlated with the R value of the RGB components, and pixels seen from a third viewpoint in the cell to be processed display a color having a luminance positively correlated with the G value of the RGB components. The pixels to be allocated colors here are pixels seen from any of the viewpoints among the pixels in the cell to be processed.

[0134] 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.

[0135] The allocation unit 117 assigns a color to each pixel so that, for each pixel group, the RGB values ​​to be represented in the cell being processed, the luminance corresponding to the red value of the RGB, and the luminance corresponding to the green value can be represented.

[0136] 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 partitions.

[0137] The display medium 200 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.

[0138] (Technology C) 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 including RGB components at pixels seen from a first viewpoint among a plurality of pixels provided in the partition; displaying a second content at pixels seen from a second viewpoint among the plurality of pixels, the luminance of each cell being positively correlated with an R value of the RGB component corresponding to each cell; and displaying a third content at pixels seen from a third viewpoint among the plurality of pixels, the luminance of each cell being positively correlated with a G value of the RGB component corresponding to each cell; A person with color vision deficiency can visually recognize the composition of the content by changing the viewpoint and repeatedly viewing the first content, the second content, and the third content. Display medium.

[0139] (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 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 including RGB components at pixels seen from a first viewpoint among a plurality of pixels provided in the partition; displaying a second content at pixels seen from a second viewpoint among the plurality of pixels, the luminance of each cell being positively correlated with an R value of the RGB component corresponding to each cell; and displaying a third content at pixels seen from a third viewpoint among the plurality of pixels, the luminance of each cell being positively correlated with a G value of the RGB component corresponding to each cell; A person with color vision deficiency can visually recognize the composition of the content by changing the viewpoint and repeatedly viewing the first content, the second content, and the third content. Display medium.

[0140] (Modification of the third embodiment) In the third embodiment, a case where three contents are displayed in three directions will be described, but in the modified example, a case where two contents are displayed in two directions will be described. A display medium 200 according to the modified example of the third embodiment displays a first content including RGB components in a first direction, and displays a second content having a luminance positively correlated with either one of the R value and the G value of the RGB components in a second direction, similar to the display medium 1 according to the modified example of the first embodiment.

[0141] When the luminance of the second content has a positive correlation with the value of R, the display medium 200 displays the first content including RGB components at pixels of the plurality of pixels provided in the partition P that are visible from a first viewpoint, and displays the second content, in which the luminance of each cell is positively correlated with the R value of the RGB component corresponding to each cell, at pixels of the plurality of pixels that are visible from a second viewpoint. The allocation unit 117 of the processing device 110 allocates colors to each pixel in a predetermined cell so that the first content including RGB components is displayed at pixels of the plurality of pixels provided in the partition P that are visible from the first viewpoint, and the second content, in which the luminance of each cell is positively correlated with the R value of the RGB component corresponding to each cell, is displayed at pixels of the plurality of pixels that are visible from the second viewpoint. The display medium 200 displays content that is easy to view for people with minority color vision who have difficulty perceiving red, as well as for people with normal color vision.

[0142] When the luminance of the second content has a positive correlation with the value of G, the display medium 200 displays the first content including RGB components at pixels that are visible from a first viewpoint among the plurality of pixels provided in the partition P, and displays the second content at pixels that are visible from a second viewpoint among the plurality of pixels, in which the luminance of each cell is positively correlated with the G value of the RGB component corresponding to each cell. The allocation unit 117 of the processing device 110 allocates colors to each pixel in a predetermined cell so that the first content including RGB components is displayed at pixels that are visible from the first viewpoint among the plurality of pixels provided in the partition P, and the second content is displayed at pixels that are visible from the second viewpoint among the plurality of pixels, in which the luminance of each cell is positively correlated with the G value of the RGB component corresponding to each cell. The display medium 200 displays content that is easy to view not only for healthy people but also for people with minority color vision who have difficulty perceiving green.

[0143] The display medium 200 according to the modified example of the third embodiment can display content that is easily visible to both normal people and people with minority color vision, while saving space.

[0144] 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.

[0145] 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.

[0146] The program of the processing device 10 can be stored in a computer-readable recording medium such as an HDD, an SSD, a Universal Serial Bus (USB) memory, a Compact Disc (CD), a Digital Versatile Disc (DVD), etc., or can be distributed via a network. The computer-readable recording medium is, for example, a non-transitory recording medium.

[0147] It should be noted that the present disclosure is not limited to the above-described embodiment, and various modifications are possible within the scope of the present disclosure.

[0148] Any part or all of the functional units described in this disclosure may be realized by a program. The program mentioned in this disclosure may be distributed in a non-temporary manner recorded on a computer-readable recording medium, or may be distributed via a communication line (including wireless communication) such as the Internet, or may be distributed in a state in which it is installed on any terminal.

[0149] Based on the above description, a person skilled in the art may be able to conceive additional effects and various modifications of the present disclosure, but the aspects of the present disclosure are not limited to the individual embodiments described above. Various additions, modifications, or partial deletions are possible within the scope of the conceptual idea and intent of the present disclosure derived from the contents defined in the claims and their equivalents.

[0150] For example, what is described in this disclosure as one device (or component, the same applies below) (including what is depicted in the drawings as one device) may be realized by multiple devices. Conversely, what is described in this disclosure as multiple devices (including what is depicted in the drawings as multiple devices) may be realized by one device. Alternatively, some or all of the means or functions included in one device may be included in another device. Furthermore, a "system" may be composed of one device, or two or more devices.

[0151] Furthermore, not all of the matters described in this disclosure are essential requirements. In particular, matters described in this disclosure but not described in the claims can be considered as optional additional matters.

[0152] It should be noted that the applicant is merely aware of the inventions disclosed in the documents in the "Prior Art Documents" column of this disclosure, and that this disclosure does not necessarily aim to solve the problems in the disclosed inventions. The problems that this disclosure aims to solve should be identified taking into consideration the entire disclosure. For example, if this disclosure describes that a specific configuration produces a specific effect, it can also be said that the problem that is the reverse of the specific effect is solved. However, it is not necessarily intended that such a specific configuration be a required requirement. [Explanation of symbols]

[0153] 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 C Cell G color area H generating point K subcell L Layer M Base material N transparent layer P partition T-shaped protruding member W Shielding material φ Azimuth

Claims

1. Having a display surface with a plurality of cells, In the first direction, a first content is displayed that shows the composition using the respective colors of the plurality of cells. In the second direction, a second content is displayed that shows the composition of the first content based on the differences in brightness of each of the plurality of cells. Display medium.

2. The first content is formed by the respective colors of a plurality of cells visible from a viewpoint in the first direction, The second content is formed by the respective colors of multiple cells visible from the viewpoint in the second direction. The display medium according to claim 1.

3. The first content is such that each of the plurality of cells has a color that can be converted to each component of RGB, The second content has a luminance in which each of the plurality of cells has a luminance that is positively correlated with either the R value or the G value of each RGB component of each cell of the first content. The display medium according to claim 1.

4. Having a display surface with a plurality of cells, In the first direction, a first content is displayed that shows the composition using the respective colors of the plurality of cells. In a display medium that displays a second content in which the composition of the first content is shown by the difference in brightness of each of the plurality of cells in a second direction, a processing device that assigns a color to each pixel of each cell, A calculation unit that calculates the RGB values ​​of the color to be displayed in each cell for the content to be displayed in the first direction, For each of the aforementioned cells, the allocation unit displays the calculated RGB values ​​in the first direction and assigns a color to each pixel of each cell in the second direction, such that the composition of the first content is shown by the difference in brightness of the plurality of cells. A processing device.

5. Having a display surface with a plurality of cells, In the first direction, a first content is displayed that shows the composition using the respective colors of the plurality of cells. In the second direction, a second content is displayed that shows the composition of the first content based on the difference in brightness of each of the plurality of cells. The cell is a display medium having multiple pixels, and the method for assigning a color to the pixels is as follows: Computers For the content to be displayed in the first direction, calculate the RGB values ​​of the color to be displayed in each cell. For each of the aforementioned cells, the calculated RGB values ​​are displayed in the first direction, and a color is assigned to each pixel of each cell in the second direction, such that the composition of the first content is shown by the difference in brightness of each of the plurality of cells. Processing method.

6. A program for causing a computer to function as the processing unit described in claim 4.

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