Display medium, processing device, processing method, and program

Abstract

The display medium (1) displays content which can be visually recognized by a normal person and a minority of color vision characteristic holders. A display medium (1) displays first content including an RGB component in a first direction, and displays second content having a brightness positively correlated with either an R value or a G value of the RGB component in a second direction.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a display medium, a processing apparatus, a processing method, and a program. BACKGROUND

[0002] Humans are able to perceive colors through red cones, green cones, and blue cones, which are three cells that perceive colors. On the other hand, a small number of people have color vision characteristics due to a defect or dysfunction of any one of the cones. In general, people with color vision characteristics have difficulty in distinguishing red and / or green. For example, in the case of a text in which green is present on a red background, or in the case of a text in which red is present on a green background, people with color vision characteristics sometimes cannot recognize the text at all.

[0003] In view of such a situation, universal design in which colors that are easy to observe are used for design is spreading regardless of the presence or absence of color vision characteristics. In universal design, there are several indexes, such as not using red and green, which are difficult to see for people with color vision characteristics.

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

[0005] PRIOR ART DOCUMENTS

[0006] PATENT DOCUMENTS

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

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

[0009] Patent Document 3: Japanese Patent No. 6764990 SUMMARY

[0010] PROBLEMS TO BE SOLVED BY THE INVENTION

[0011] However, in universal design, the colors that can be used are limited, and thus it is not possible to express contents in arbitrary colors.

[0012] If it is desired to express contents in arbitrary colors, people with color vision characteristics have difficulty in seeing, and thus it is also considered to describe, together, contents expressed in arbitrary colors for normal people and contents expressed in colors suitable for people with color vision characteristics. However, in order to change the colors of the contents described together, a large space is required.

[0013] The present disclosure was completed in view of the above circumstances, and an object of the present disclosure is to provide a technology that saves space and enables display of contents that are easy to see for both normal people and people with color vision characteristics.

[0014] MEANS FOR SOLVING THE PROBLEMS

[0015] The display medium of one embodiment of the present disclosure displays content that normal people and a small number of color vision characteristic holders can visually recognize, displays first content containing RGB components in a first direction, and displays second content having luminance having a positive correlation with any one of R values and G values of the RGB components in a second direction.

[0016] The processing device of one embodiment of the present disclosure allocates colors to a color gamut in a display medium including a top surface layer formed of a transparent member, a plurality of top surface units each having a color gamut, and a bottom surface layer formed of a transparent member, a plurality of bottom surface units each having a color gamut, and units of the top surface unit of the top surface layer and the bottom surface unit of the bottom surface layer overlapping with each other are formed so that, when visually recognized from a first direction and a second direction, a portion in which the color gamut of the top surface unit overlaps with the color gamut of the bottom surface unit is different from each other in the color gamut of the bottom surface unit, the top surface unit and the bottom surface unit each have the color gamut and a transparent region to which no color is given, the color gamut is provided at a position apart from an end portion of each of the units of the top surface unit and the bottom surface unit, and the display medium includes a plurality of pixels, in which the processing device includes a calculation portion which calculates each value of RGB of a color displayed in each unit with respect to content displayed in the first direction, and an allocation portion which allocates a color to each pixel of the top surface unit and the bottom surface unit with respect to each unit so that a color of each value of RGB calculated is displayed in the first direction and a color having luminance having a positive correlation with any one of R values and G values is displayed in the second direction.

[0017] In the processing method of one embodiment of the present disclosure, in a display medium including an upper surface layer formed of a transparent member, having a plurality of upper surface units each having a color gamut, and a lower surface layer formed of a transparent member, having a plurality of lower surface units each having a color gamut, the units of the upper surface units of the upper surface layer and the lower surface units of the lower surface layer overlapping with the upper surface units are formed so that, when visually recognized from a first direction and a second direction, portions in which the color gamut of the upper surface unit overlaps with the color gamut of the lower surface unit are different from each other in the color gamut of the lower surface unit, the upper surface unit and the lower surface unit each have the color gamut and a transparent region to which no color is imparted, the color gamut is provided at a position away from an end portion of each of the units of the upper surface unit and the lower surface unit, and each of the upper surface unit and the lower surface unit includes a plurality of pixels, wherein the upper surface unit and the lower surface unit each have the color gamut and a transparent region to which no color is imparted, the color gamut is provided at a position away from an end portion of each of the units of the upper surface unit and the lower surface unit, and each of the upper surface unit and the lower surface unit includes a plurality of pixels, a computer calculates each value of RGB of a color displayed in the unit with respect to content displayed in the first direction, and the computer imparts a color to each pixel of the upper surface unit and the lower surface unit in the unit so that a color of which each value of RGB is calculated is displayed in the first direction and a color having luminance having a positive correlation with any one of an R value and a G value of the RGB component is displayed in the second direction.

[0018] The display medium of one aspect of the present application displays content that can be visually recognized by normal people and a small number of color vision characteristic holders, displays first content including an RGB component in a first direction, displays second content having luminance having a positive correlation with an R value of the RGB component in a second direction, and displays third content having luminance having a positive correlation with a G value of the RGB component in a third direction.

[0019] A processing device of one embodiment of the present disclosure allocates colors to color gamuts in a display medium including: an upper surface layer formed of a transparent member, having a plurality of upper surface units each having a color gamut; and a lower surface layer formed of a transparent member, having a plurality of lower surface units each having a color gamut, in which units of an upper surface unit of the upper surface layer and a lower surface unit of the lower surface layer overlapping with the upper surface unit are formed so that portions in which the color gamut of the upper surface unit overlaps in the color gamut of the lower surface unit are different from each other when visually recognized from a first direction, a second direction, and a third direction, the upper surface unit and the lower surface unit each have the color gamut and a transparent region to which no color is given, the color gamut is provided at a position apart from an end portion of each of the units of the upper surface unit and the lower surface unit, and the display medium includes a plurality of pixels, in which the processing device includes: a calculation portion which calculates each value of RGB of a color displayed in each unit with respect to content displayed in the first direction; and an allocation portion which allocates a color to each pixel of the upper surface unit and the lower surface unit with respect to each unit so that a color of each value of RGB calculated is displayed in the first direction, a color having luminance having a positive correlation with a calculated R value is displayed in the second direction, and a color having luminance having a positive correlation with a calculated G value is displayed in the third direction.

[0020] The processing method of one embodiment of the present disclosure is a method in which a computer allocates colors to color gamuts in a display medium including: an upper surface layer formed of a transparent member, having a plurality of upper surface units each having a color gamut; and a lower surface layer formed of a transparent member, having a plurality of lower surface units each having a color gamut, in which the units of the upper surface units of the upper surface layer and the lower surface units of the lower surface layer overlapping with the upper surface units are formed so that, when visually recognized from a first direction, a second direction, and a third direction, portions in which the color gamut of the upper surface unit overlaps with the color gamut of the lower surface unit are different from each other in the color gamut of the lower surface unit, the upper surface unit and the lower surface unit each have the color gamut and a transparent region to which no color is given, the color gamut is provided at a position away from an end portion of each of the units of the upper surface unit and the lower surface unit, and each of the upper surface unit and the lower surface unit includes a plurality of pixels, the computer calculates each value of RGB of a color displayed in the unit with respect to content displayed in the first direction, and the computer allocates colors to each pixel of the upper surface unit and the lower surface unit in the unit so that a color of which each value of RGB is calculated is displayed in the first direction, a color having luminance having a positive correlation with a calculated R value is displayed in the second direction, and a color having luminance having a positive correlation with a calculated G value is displayed in the third direction.

[0021] One embodiment of the present disclosure is a program that causes a computer to function as the processing device described above.

[0022] Effects of Invention

[0023] According to the present disclosure, a technology that saves space and enables display of content that is easy to see for both normal people and a small number of color vision characteristic holders can be provided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a perspective view of a display medium of a first embodiment.

[0025] Figure 2 FIG. 2 is a side view of the display medium of the first embodiment.

[0026] Figure 3 FIG. 3 is a view of an upper surface layer and a lower surface layer of the display medium of the first embodiment.

[0027] Figure 4 FIG. 4 is a side view of a unit of the first embodiment.

[0028] Figure 5is a diagram for explaining functional blocks of a processing device for generating output data used for manufacturing a display medium of the first embodiment.

[0029] Figure 6 is a flowchart for explaining a process of deciding colors allocated to the display medium of the first embodiment.

[0030] Figure 7 is a perspective view of a display medium of the second embodiment.

[0031] Figure 8 is a diagram of an example of a unit of the display medium of the second embodiment.

[0032] Figure 9 is a diagram for explaining an example of a pixel that is shielded and a pixel that is exposed in the display medium of the second embodiment.

[0033] Figure 10 is a diagram for explaining functional blocks of a processing device for generating output data used for manufacturing a display medium of the second embodiment.

[0034] Figure 11 is a perspective view of a display medium of the third embodiment.

[0035] Figure 12 (a) of is a front view of a partition for the display medium of the third embodiment, Figure 12 (b) of is a right side view.

[0036] Figure 13 is a sectional view of a partition for the display medium of the third embodiment.

[0037] Figure 14 is a diagram for explaining a hardware structure of a computer used in the processing device. DETAILED DESCRIPTION

[0038] Hereinafter, an embodiment of the present disclosure will be described with reference to the accompanying drawings. In the description of the drawings, the same portions are denoted by the same reference numerals and the description will be omitted.

[0039] (Display medium)

[0040] The display medium of the embodiment of the present disclosure displays content that is visually recognized by normal people and a small number of color vision characteristic holders. The display medium displays content that is easily visually recognized by normal people and a small number of color vision characteristic holders in different directions, respectively.

[0041] A person with a minority color vision characteristic is a person who sees colors differently or feels colors differently from the other numerous people who are considered normal, and is also sometimes called a person with color blindness, color weakness, or color vision abnormality in medicine. Many people have 3 cones for perceiving colors. A person with a minority color vision characteristic has a different color vision characteristic from other people due to a deficiency in a specific one or a plurality of the 3 cones.

[0042] In the present disclosure, a display medium displays first content including RGB components in a first direction. The display medium displays second content having luminance positively correlated with R values of the RGB components in a second direction. The display medium displays third content having luminance positively correlated with G values of the RGB components in a third direction.

[0043] A display surface of the display medium is divided into a plurality of units. Each unit has a plurality of pixels. Content displayed by the display medium of the embodiment of the present disclosure is represented by colors provided to each of the plurality of pixels on the display medium.

[0044] The display medium displays first content that can be represented by three primary colors RGB (red, green, and blue) by pixels seen from a first viewpoint among the plurality of pixels. The display medium displays second content having luminance positively correlated with values of a red component of the first content by pixels seen from a second viewpoint among the plurality of pixels. The display medium displays third content having luminance positively correlated with values of a green component of the first content by pixels visible from a third viewpoint among the plurality of pixels.

[0045] In the present disclosure, a normal person understands a composition of content according to each component of red, green, and blue of the first content. Since a person with a minority color vision characteristic has difficulty in recognizing red or green, it is possible to understand a composition of content represented by a blue component among red, green, and blue according to the blue component of each unit of the first content. On the other hand, a person with a minority color vision characteristic cannot understand compositions of content represented by a red component and a green component even if visually recognizing the first content. Therefore, by the display medium of the present disclosure, a person with a minority color vision characteristic understands a composition of content represented by a red component according to a luminance difference of each unit of the second content. A person with a minority color vision characteristic understands a composition of content represented by a green component according to a difference in components of luminance of each unit of the third content. A person with a minority color vision characteristic repeats observation of the display medium by changing a viewpoint, and thus can visually recognize compositions represented by each color component from the first content, the second content, and the third content. Here, the composition of content is an outline (edge) of a subject or a background in the content.

[0046] A processing device for manufacturing the display medium of the embodiment of the present disclosure specifies colors provided to each pixel of the display medium as output data to be input to a manufacturing device for manufacturing the display medium such as a printer.

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

[0048] The calculation section calculates each value of red, green, and blue of a color displayed in a predetermined unit in a first content that can be expressed by the three primary colors of red, green, and blue. Here, the first content can be formed by a red, green, and blue color model, or can be formed by another color model such as CMYK, as long as it can be converted into the three primary colors of red, green, and blue. CMYK is Cyan, Magenta, Yellow, and black.

[0049] The allocation section allocates a color to each pixel in the predetermined unit so that a color whose each value of red, green, and blue is displayed in a pixel viewed from a first viewpoint in the predetermined unit, a luminance having a positive correlation with a value of red among red, green, and blue is displayed in a pixel viewed from a second viewpoint in the predetermined unit, and a luminance having a positive correlation with a value of green among red, green, and blue is displayed in a pixel viewed from a third viewpoint in the predetermined unit.

[0050] The inventors have found that, although a person with a few color vision characteristics has difficulty in recognizing red or green, he or she can grasp a composition in the content and understand the content by viewing the content in which red or green is converted into a luminance. In addition, the inventors have found that, although there are several types in the few color vision characteristics, many persons with few color vision characteristics can grasp a composition in the content by displaying the content in which red and green are converted into luminances, respectively.

[0051] The display medium disclosed in patent documents and the like can display different contents in different directions, respectively. The display medium displays a content that is easily visually recognized by a normal person in a certain direction. Furthermore, the display medium displays a content for a person with few color vision characteristics in two directions other than the certain direction. The content for the person with few color vision characteristics is a content in which an element that is difficult for the person with few color vision characteristics to visually recognize in the content that is easily visually recognized by the normal person is converted into an element that is easily visually recognized by the person with few color vision characteristics. The content that is easily visually recognized by the normal person is a content in which each unit is formed by RGB. The content in which the element that is easily visually recognized by the person with few color vision characteristics is converted is a content in which a gradation of red of each unit is converted into a strength of a luminance and a content in which a gradation of green of each unit is converted into a strength of a luminance.

[0052] The person with few color vision characteristics switches a direction in which the display medium is visually recognized, or switches a direction of the display medium, and sequentially and repeatedly views the three contents. The person with few color vision characteristics can grasp a composition in the content, specifically, a difference in a gradation of each color, from the content in which a gradation of red is expressed by a strength of a luminance and the content in which a gradation of green is expressed by a strength of a luminance.

[0053] Such a display medium can display content that is easily seen by both normal persons and a small number of color vision characteristic holders in a space-saving manner.

[0054] In addition, the second content and the third content displayed by the display medium are generated by reflecting the gradation of each color component of the content formed by RGB, respectively, and thus the composition in the content appears at the same position of the display medium. By switching the direction in which the display medium is visually recognized or switching the direction of the display medium, the gradation of red or the gradation of green can be recognized as the strength of the brightness at the same position. The display medium can further grasp the composition in the content in combination with the afterimage of the strength of the brightness.

[0055] Further, as a specific example of the display medium that displays content that is easily seen by both normal persons and a small number of color vision characteristic holders in a space-saving manner in the embodiments of the present disclosure, it will be described in the first to third embodiments. Here, the display medium is described in the three embodiments, but is not limited thereto. In the display medium in which different content can be displayed in different directions, content formed by RGB (red, green, and blue) that is easily seen by normal persons, content in which red is converted into brightness, and content in which green is converted into brightness can be displayed.

[0056] (First Embodiment)

[0057] Reference Figure 1 will be described. The display medium 1 of the first embodiment has the structure of the display medium described in Patent Literature 2. As shown in Figure 1 , the display medium 1 has a plurality of cells C on a surface. In the example shown in Figure 1 , the user's line of sight is located above the Z-axis direction. In the example shown in Figure 1 , the display medium 1 has a cuboid shape, but the shape is not limited. The display medium 1 can be formed in a sheet shape or a three-dimensional shape.

[0058] As shown in Figure 2 , the display medium 1 includes an upper surface layer Lu and a lower surface layer Lb. The nomenclature of the upper surface layer Lu and the lower surface layer Lb does not depend on the arrangement state of the display medium 1. In the first embodiment, the layer close to the user's viewpoint is called the upper surface layer Lu. The layer away from the user's viewpoint is called the lower surface layer Lb.

[0059] As shown in Figure 2 and Figure 3As shown, the upper surface layer Lu and the lower surface layer Lb are formed in the XY plane and are arranged parallel to the Z-axis direction. The display medium 1 displays multiple contents corresponding to multiple directions based on the parts of the upper surface layer Lu and the lower surface layer Lb that light from multiple directions passes through. Each content can be visually recognized at each viewpoint set at a position where light from multiple directions passing through the upper surface layer Lu and the lower surface layer Lb is incident. In each direction, the display medium 1 has a different combination of the color of the part passing through the upper surface layer Lu and the color of the part passing through the lower surface layer Lb, thereby displaying multiple contents. The display medium 1 displays contents at three different viewpoints above the Z-axis direction relative to the upper surface layer Lu and the lower surface layer Lb. The three different viewpoints have different values ​​at least in the X-direction and the Y-direction.

[0060] In the first embodiment, the light of a predetermined direction used when displaying content is emitted from a direction opposite to the viewpoint at least relative to the upper surface layer Lu and the lower surface layer Lb. When the viewpoint is set above the upper surface layer Lu and the lower surface layer Lb in the Z-axis direction, the light can be emitted from below the upper surface layer Lu and the lower surface layer Lb in the Z-axis direction, and the position of the light source is not limited. The light directed upward from below the lower surface layer Lb in the Z-axis direction can be, for example, light from a light source set at an arbitrary position after being reflected by the substrate M, or light from a light source set on the substrate M.

[0061] like Figure 2 As shown, a transparent layer N is formed between the upper surface layer Lu and the lower surface layer Lb. In addition, a substrate M is provided in the opposite direction of the transparent layer N and the Z-axis direction relative to the lower surface layer Lb. In the Z-axis direction, these components are stacked in the order of the substrate M, the lower surface layer Lb, the transparent layer N, and the upper surface layer Lu, thereby forming the display medium 1.

[0062] The transparent layer N is preferably formed by a material that does not absorb the color component of light and allows a large amount of light to pass through. The transparent layer N is formed by transparent materials such as water, transparent plastic, etc. The transparent layer N can also be formed by air. In other words, the upper surface layer Lu and the lower surface layer Lb can be arranged parallel to each other at a predetermined distance. The base material M is a mirror, white paper, etc., and is formed by components that are easy to visually identify the colors given to the upper surface layer Lu and the lower surface layer Lb.

[0063] like Figure 2 and Figure 3As shown, the upper surface layer Lu is formed of a transparent member, and has a plurality of upper surface units Cu. The plurality of upper surface units Cu each has a color gamut. The lower surface layer Lb is formed of a transparent member, and has a plurality of lower surface units Cb. The plurality of lower surface units Cb each has a color gamut. The color gamuts of the upper surface units Cu and the lower surface units Cb are given colors by predetermined definition of the positions of the upper surface units Cu and the lower surface units Cb. The positions of the upper surface units Cu and the lower surface units Cb can not be visually recognized as long as the positions of the respective color gamuts can be determined. For example, between two adjacent upper surface units Cu or two adjacent lower surface units Cb, there can be no clear division by lines, intervals, depressions, or the like. The two adjacent upper surface units Cu or the two adjacent lower surface units Cb can not be physically divided. Further, at the boundary between two adjacent upper surface units Cu or two adjacent lower surface units Cb, the two units can not be visually recognized because the same color or the same achromatic color is given to the end portions of the two units, respectively.

[0064] In the first embodiment, each of the upper surface units Cu of the upper surface layer Lu and each of the lower surface units Cb of the lower surface layer Lb is formed by dividing each layer in the same manner. Each of the upper surface units Cu of the upper surface layer Lu is formed at a position offset in the Z-axis direction from each of the lower surface units Cb of the lower surface layer Lb. More specifically, as shown in FIG. 1, the upper surface layer Lu is formed of a transparent member, and has a plurality of upper surface units Cu. The plurality of upper surface units Cu each has a color gamut. The lower surface layer Lb is formed of a transparent member, and has a plurality of lower surface units Cb. The plurality of lower surface units Cb each has a color gamut. The color gamuts of the upper surface units Cu and the lower surface units Cb are given colors by predetermined definition of the positions of the upper surface units Cu and the lower surface units Cb. The positions of the upper surface units Cu and the lower surface units Cb can not be visually recognized as long as the positions of the respective color gamuts can be determined. For example, between two adjacent upper surface units Cu or two adjacent lower surface units Cb, there can be no clear division by lines, intervals, depressions, or the like. The two adjacent upper surface units Cu or the two adjacent lower surface units Cb can not be physically divided. Further, at the boundary between two adjacent upper surface units Cu or two adjacent lower surface units Cb, the two units can not be visually recognized because the same color or the same achromatic color is given to the end portions of the two units, respectively. Figure 3

[0065] In the first embodiment, the unit C includes the upper surface unit Cu of the upper surface layer Lu and the lower surface unit Cb of the lower surface layer Lb that overlaps the upper surface unit Cu. The unit C is determined by the combination of the corresponding upper surface unit Cu and lower surface unit Cb among the upper surface units Cu of the upper surface layer Lu and the lower surface units Cb of the lower surface layer Lb.

[0066] As shown, the upper surface layer Lu is formed of a transparent member, and has a plurality of upper surface units Cu. The plurality of upper surface units Cu each has a color gamut. The lower surface layer Lb is formed of a transparent member, and has a plurality of lower surface units Cb. The plurality of lower surface units Cb each has a color gamut. The color gamuts of the upper surface units Cu and the lower surface units Cb are given colors by predetermined definition of the positions of the upper surface units Cu and the lower surface units Cb. The positions of the upper surface units Cu and the lower surface units Cb can not be visually recognized as long as the positions of the respective color gamuts can be determined. For example, between two adjacent upper surface units Cu or two adjacent lower surface units Cb, there can be no clear division by lines, intervals, depressions, or the like. The two adjacent upper surface units Cu or the two adjacent lower surface units Cb can not be physically divided. Further, at the boundary between two adjacent upper surface units Cu or two adjacent lower surface units Cb, the two units can not be visually recognized because the same color or the same achromatic color is given to the end portions of the two units, respectively. Figures 2 to 4 ​​

[0067] In the first embodiment, the case where each upper surface unit Cu and each lower surface unit Cb has a color domain of the same shape is described, but the shape of each upper surface unit Cu or lower surface unit Cb may be different. In addition, in the first embodiment, the case where multiple color domains are set in the X-axis direction in each of the upper surface layer Lu and the lower surface layer Lb is described, but a single color domain may be set. In addition, the case where one color domain is set in the Y-axis direction is described, but multiple color domains may also be set. Furthermore, the case where multiple color domains are set adjacent to each other is described, but multiple color domains may also be set discretely by setting transparent areas between the multiple color domains.

[0068] Reference Figure 4 , the upper surface unit Cu and the lower surface unit Cb forming one unit are described. In the first embodiment, a transparent area is set at the boundary portion of each of the upper surface unit Cu and the lower surface unit Cb. A color domain is set at the inner portion of the transparent area. By setting the transparent area, it is possible to form a color domain in which light passing through the color domain does not pass through the adjacent units, thereby reducing the burden of calculating the color assigned to each color domain. The color domain is formed by applying ink to each layer. The ink can be a dye ink or a pigment ink. In addition, in Figure 4 In the image, unshaded areas are transparent areas without ink. A color gamut is formed by one or more pixels. In the present disclosure, a single color is uniformly applied within a single color gamut G11. This also applies to the other color gamuts G12 to G26.

[0069] In a single unit, the positions of the upper surface unit Cu and the lower surface unit Cb are set so that light passing through the color gamut of the upper surface unit Cu passes through the lower surface unit Cb, and light passing through the color gamut of the lower surface unit Cb passes through the upper surface unit Cu. In the first embodiment, the upper surface unit Cu and the lower surface unit Cb included in a single unit are offset in the Z-axis direction, but the present invention is not limited to this. The corresponding upper surface unit Cu and the lower surface unit Cb may also be offset in an oblique direction. Specifically, they may be offset not only in the Z-axis direction but also in the X-axis direction or the Y-axis direction.

[0070] In the first embodiment, when visually recognized from the first to third directions, the cells are formed so that the portion of the color gamut of the lower surface cell Cb that overlaps with the color gamut of the upper surface cell Cu is different from each other. Thus, the cells can display different colors from each other in the first to third directions. Here, "different from each other" means not completely identical, and includes not only completely different colors but also at least partially identical and partially different colors.

[0071] For example, in Figure 4In the first direction of (a), the color gamut G11 and G12 of the upper surface unit Cu overlap with the color gamut G23 and G24 of the lower surface unit Cb. In Figure 4 In the second direction of (b), the color gamut G11 and G12 of the upper surface unit Cu overlap with the color gamut G25 and G26 of the lower surface unit Cb. In Figure 4 In the third direction of (c), the color gamut G11 and G12 of the upper surface unit Cu overlap with the color gamut G21 and G22 of the lower surface unit Cb.

[0072] In the example shown in (a), the color gamut G11 and G12 of the upper surface unit Cu overlap with the color gamut G23 and G24 of the lower surface unit Cb in the first direction. In Figure 4 In the example shown in (a), the color gamut G11 and G12 of the upper surface unit Cu overlap with the color gamut G23 and G24 of the lower surface unit Cb in the first direction. In

[0073] In addition, in a case where the ink used in the color gamut is an ink, such as a dye ink, that has high permeability, the user is able to visually recognize the color that is mixed from the various colors of the color gamut that overlap at each viewpoint in each direction visually recognized. In Figure 4 In (a), the user visually recognizes the color of each color mixture of G11 and G23 and the color of each color mixture of G12 and G24. Further, the user visually recognizes the color of each color mixture of G11 and G23, the color of each color mixture of G12 and G24, and the color of each color mixture of G21, G22, G25, and G26 by additive color mixing.

[0074] On the other hand, in a case where the ink used in the color gamut is an ink, such as a pigment ink, that has low permeability, the user is able to visually recognize the color close to the viewpoint in the direction visually recognized. In Figure 4 In (a), the user visually recognizes the color of G11 and the color of G12. Further, the user visually recognizes the color of each color mixture of G11 and G12 and G21, G22, G25, and G26 by additive color mixing.

[0075] Thus, the units of the display medium 1 of the first embodiment differ in the portion of the color gamut of the lower surface unit Cb that overlaps with the color gamut of the upper surface unit Cu for the first direction, the second direction, and the third direction, and thus are able to display mutually different content in the three directions.

[0076] Specifically, the display medium 1 displays a first content including RGB components in the first direction. The display medium 1 displays a second content having luminance positively correlated with the R value of the RGB components in the second direction. The display medium 1 displays a third content having luminance positively correlated with the G value of the RGB components in the third direction. Furthermore, the display medium 1 can display three contents in three different directions, and the three directions are not limited to the directions shown in the drawing. Figure 4

[0077] Here, the ratio of the R value of the RGB components of the first content with respect to the value range of R can also correspond to the ratio of the value of the luminance of the second content with respect to the value range of luminance. Similarly, the ratio of the G value of the RGB components of the first content with respect to the value range of G can also correspond to the ratio of the value of the luminance of the third content with respect to the value range of luminance. For example, in a case where each value of the RGB components in the first content is expressed in 256 levels, and the luminance in the second content and the third content is expressed in 256 levels, the R value of the RGB components of the first content is preferably the same as the value of the luminance of the second content. Preferably, the G value of the RGB components of the first content is the same as the value of the luminance of the third content. Furthermore, from the viewpoint of visibility, the luminance in the second content can be a predetermined multiple with respect to the R value in the first content, or can be given an offset. Similarly, the luminance in the third content can be a predetermined multiple with respect to the G value in the first content, or can be given an offset.

[0078] The display medium 1 displays, in addition to the first content which is converted into each component of RGB, a second content in which the gradation of the R component is converted into the strength of the luminance, and a third content in which the gradation of the G component is converted into the strength of the luminance. A normal person visually recognizes the first content. A minority color vision characteristic holder visually recognizes the composition of the content formed by the B component of the first content, and is able to visually recognize the composition of the content formed by each of the R component and the G component by repeatedly observing the second content and the third content by changing the viewpoint.

[0079] In the first embodiment, the minority color vision characteristic holder is able to recognize the composition expressed by each of the RGB components by alternately changing the viewpoint with respect to the display medium 1 between the viewpoint at which the first content can be seen, the viewpoint at which the second content can be seen, and the viewpoint at which the third content can be seen, specifically, by changing the viewpoint with respect to the display medium 1 to the directly upward direction, the left obliquely upward direction, and the right obliquely upward direction.

[0080] (Processing device)

[0081] Reference Figure 5 ​The processing device 10 that determines the colors to be given to the display medium 1 will be described. The processing device 10 has each function of input image data 11, cell color data 12, and output data 13, a calculation section 16, and an allocation section 17. Each data is stored in a storage device such as a storage 902 or a storage device 903. Each function is installed in a CPU 901.

[0082] 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 a predetermined color is associated with each pixel. The input image data 11 is content that can be visually recognized by a normal person. The input image data 11 can be converted into each component of RGB.

[0083] The cell color data 12 is data of the color to be represented by each cell of the display medium 1.

[0084] The output data 13 is data in which the value of the color to be printed on each layer is associated with the position thereof when the display medium 1 is formed by a manufacturing device. The output data 13 determines the color to be colored in each gamut of the cell for each cell. In Figure 4 In the example shown, the output data 13 associates the color to be provided to each of the gamuts G11, G12, G21, G22, G23, G24, G25, and G26 for each cell.

[0085] The calculation section 16 calculates each value of RGB of the color to be displayed in each cell for the content to be displayed in the first direction. In the first content represented by RGB, the calculation section 16 calculates each value of red green blue (RGB) of the color to be displayed by the upper surface cell Cu and the lower surface cell Cb of a certain cell. The calculation section 16 calculates the value of RGB of the input image data 11 corresponding to the position of the cell to be processed, as the value of RGB of the color to be displayed by the pair of the upper surface cell Cu and the lower surface cell Cb. The calculation section 16 calculates the value of RGB for each cell and outputs to the cell color data 12.

[0086] The allocation section 17 determines the color to be allocated to each gamut for each cell and outputs to the output data 13. The allocation section 17 allocates the color to each pixel of the upper surface cell Cu and the lower surface cell Cb for each cell so that the color displaying each value of RGB calculated 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 are displayed.

[0087] The assigning section 17 assigns a color to each pixel in a manner that the ratio of the R value of the RGB component of the first content with respect to the value range of R corresponds to the ratio of the value of the luminance of the second content with respect to the value range of luminance, and the ratio of the G value of the RGB component of the first content with respect to the value range of G corresponds to the ratio of the value of the luminance of the third content with respect to the value range of luminance, for the unit of the processing target.

[0088] The assigning section 17, for example, searches for a color of each pixel that realizes the RGB calculated by the calculating section 16 by a combination of each pixel viewed from the first direction, realizes the luminance corresponding to the gradation of R calculated by the calculating section 16 by a combination of each pixel viewed from the second direction, and realizes the luminance corresponding to the gradation of G calculated by the calculating section 16 by a combination of each pixel viewed from the third direction. The assigning section 17 can search by an exhaustive method, or can search by optimization. The assigning section 17, for example, sets the value of RGB displayed for the first direction, the luminance displayed for the second direction, and the luminance displayed for the third direction as a target. As an evaluation function, the assigning section 17 sets the difference between the value of RGB displayed for the first direction, the luminance displayed for the second direction, and the luminance displayed for the third direction realized by the color of each pixel searched for, and the target. The assigning section 17 decides the color of each pixel assigned to each unit so as to minimize the evaluation function.

[0089] The assigning section 17 decides the color of each pixel assigned to each unit, and outputs to the output data 13.

[0090] Reference Figure 6 to the processing of assigning a color to each pixel of the unit of the predetermined object.

[0091] First, in step S101, the processing device 10 acquires the pixel value of the position of the unit of the processing target from the input image data 11. In step S102, the processing device 10 decomposes the pixel value acquired in step S101 into the value of RGB.

[0092] In step S103, the processing device 10 calculates a combination of the color of each pixel that displays the acquired pixel value in the first direction, displays the luminance corresponding to the R value decomposed in step S102 in the second direction, and displays the luminance corresponding to the G value decomposed in step S102 in the third direction.

[0093] In step S104, the processing device 10 assigns the calculated color to each pixel of the unit of the processing target.

[0094] The processing device 10 repeats the processing of steps S101 to S104 for each unit. Figure 6The processing device 10 outputs the correspondence between pixels and colors in each unit to output data 13. By inputting output data 13 into a manufacturing device such as a printer, the upper surface layer Lu and lower surface layer Lb are output, each pixel being colored with the appropriate color. The display medium 1 is formed by the substrate M, lower surface layer Lb, and third layer.

[0095] The display medium 1 of the first embodiment can display space-saving content that is easily visible to both normal users and those with limited color vision. Furthermore, in addition to displaying content represented by RGB, the display medium 1 of the first embodiment also displays secondary content that converts the intensity of R into intensity, and third content that converts the intensity of G into intensity. The display medium 1 not only displays content that is easily visible to normal users, but also to those with limited color vision who have difficulty distinguishing at least one of red and green. This enables a wider range of users to visually recognize content.

[0096] (Modification of the first embodiment)

[0097] In the first embodiment, a case where three contents are displayed in three directions is described. However, in a modified example, a case where two contents are displayed in two directions is described.

[0098] The display medium 1 of the modified example displays first content including RGB components in a first direction, and displays second content having brightness positively correlated with either the R value or the G value of the RGB components in a second direction.

[0099] When the brightness of the second content has a positive correlation with the R value, the ratio of the R value of the first content to the range of the R value of the RGB components corresponds to the ratio of the brightness value to the range of the brightness of the second content. Display medium 1 displays the first content including RGB components in the first direction for each cell viewed from a first viewpoint in the first direction, and displays the second content in the second direction, where the brightness of each cell viewed from a second viewpoint in the second direction has a positive correlation with the R value corresponding to the RGB component of each cell. Allocation unit 17 of processing device 10 of the modified example allocates colors to each pixel of the upper and lower surface cells so that the colors corresponding to the RGB values ​​calculated by calculation unit 16 are displayed in the first direction, and the colors corresponding to the brightness that have a positive correlation with the R value are displayed in the second direction.

[0100] The display medium 1 of the modification example displays, as the second content, content in which the gradation of R is converted into the strength of the luminance in addition to the content represented by RGB as the first content. The display medium 1 displays, as the content easy to see, to the few color vision characteristic holders who have difficulty in recognizing red in addition to the normal person. The few color vision characteristic holders who have difficulty in recognizing red can understand the composition of the content represented by the green component and the blue component in the red green blue from the components of green and blue in each cell of the first content, respectively. The few color vision characteristic holders who have difficulty in recognizing red can understand the composition of the content represented by the red component from the difference in the luminance of each cell of the second content.

[0101] In a case where the luminance of the second content has a positive correlation with the G value, the ratio of the G value of the first content with respect to the value range of the G value of the RGB component corresponds to the ratio of the value of the luminance of the second content with respect to the value range of the luminance. The display medium 1 displays, in each cell viewed from the first viewpoint in the first direction, the first content including the RGB component in the first direction, and the second content having a positive correlation with the G value of the RGB component of each cell in the luminance viewed from the second viewpoint in the second direction. The distribution section 17 of the processing device 10 of the modification example distributes, for each cell, a color in which the color of each value of RGB calculated by the calculation section 16 is displayed in the first direction and a color having a luminance having a positive correlation with the G value is displayed in the second direction.

[0102] The display medium 1 of the modification example displays, as the second content, content in which the gradation of R is converted into the strength of the luminance in addition to the content represented by RGB as the first content. The display medium 1 displays, as the content easy to see, to the few color vision characteristic holders who have difficulty in recognizing red in addition to the normal person. The few color vision characteristic holders who have difficulty in recognizing red can understand the composition of the content represented by the green component and the blue component in the red green blue from the components of green and blue in each cell of the first content, respectively. The few color vision characteristic holders who have difficulty in recognizing red can understand the composition of the content represented by the red component from the difference in the luminance of each cell of the second content.

[0103] The display medium 1 of the modification example of the first embodiment can save space and display content that is easy to see for both the normal person and the few color vision characteristic holders.

[0104] (Second Embodiment)

[0105] In the first embodiment, a case where the display medium is formed using the technology described in Patent Literature 2 is described. In the second embodiment, a case where the display medium 100 is formed using the technology described in Patent Literature 1 is described.

[0106] The display medium 100 of the second embodiment displays content that can be visually recognized by normal people and people with a limited number of color vision characteristics. The display medium 100 displays three contents corresponding to three azimuth angles based on predetermined elevation and azimuth angles.

[0107] In a second embodiment, the display medium 100 has a plurality of cells on its surface. Cell C includes a light-blocking protruding member and has a color gamut on its surface. Cell C is formed so that the color gamuts observed from each of the first to third directions are different. Here, "different color gamuts" means not completely identical, including not only completely different but also at least partially identical and partially different. The display medium 100 displays first content comprising RGB components in each cell viewed from a first viewpoint in the first direction. The first content is formed by each pixel in each cell as viewed from the first viewpoint. In the second direction, the display medium 100 displays second content, wherein the brightness of each cell viewed from a second viewpoint in the second direction positively correlates with the R value corresponding to the RGB component of each cell. The second content is formed by each pixel in each cell as viewed from the second viewpoint. In the third direction, the display medium 100 displays third content, wherein the brightness of each cell viewed from a third viewpoint in the third direction positively correlates with the G value corresponding to the RGB component of each cell. The third content is formed by each pixel in each cell as viewed from the third viewpoint.

[0108] As in the first embodiment, the display medium 100 of the second embodiment can save space and display content that is easy for both normal people and people with a few color vision characteristics to see.

[0109] like Figure 7 As shown, display medium 100 includes a substrate 101 and a colored portion 102 that displays the color of the content on the upper surface of substrate 101. Substrate 101 has a light-reflecting surface. Substrate 101 can be in the form of a thin sheet such as paper or a three-dimensional shape. The upper surface of substrate 101 can be flat or curved.

[0110] The upper surface of the substrate 101 is divided into a plurality of cells C. The plurality of cells can be arranged adjacent to each other or separated from each other. Figure 8 As shown, the plurality of cells C are divided into three sub-cells K0, K1, and K2 corresponding to three azimuth angles. Sub-cell K0 corresponds to azimuth angle φ0. Sub-cell K1 corresponds to azimuth angle φ1. Sub-cell K2 corresponds to azimuth angle φ2.

[0111] Protruding parts T0, T1 and T2 are formed on the subunits K0, K1 and K2 respectively corresponding to the predetermined azimuth angles. Protruding part T0 is formed on the subunit K0. Protruding part T1 is formed on the subunit K1. Protruding part T2 is formed on the subunit K2.

[0112] The protruding members T0, T1, and T2 are formed of a light-shielding member and have surfaces with predetermined azimuth directions, more specifically, surfaces parallel to the azimuths of the subunits forming the protruding members.

[0113] The colored portion of the sub-unit corresponding to the predetermined azimuth angle is observed from predetermined elevation angles and azimuth angles.

[0114] For example, when a user observes a coordinate x on the display medium 100 at a predetermined elevation angle ω0 and an azimuth angle φ0, the user can confirm the color value of the coordinate of the first content corresponding to the coordinate x on the display medium 100. Similarly, when the user observes the coordinate x on the display medium 100 at a predetermined elevation angle ω1 and an azimuth angle φ1, the user can confirm the color value of the coordinate of the second content corresponding to the coordinate x on the display medium 100. Furthermore, when the user observes the coordinate x on the display medium 100 at a predetermined elevation angle ω2 and an azimuth angle φ2, the user can confirm the color value of the coordinate of the third content corresponding to the coordinate x on the display medium 100.

[0115] In the second embodiment, the first content is displayed at an azimuth angle φ0, the second content is displayed at an azimuth angle φ2, and the third content is displayed at an azimuth angle φ3, but the present invention is not limited thereto. The correspondence between the azimuth angle and the displayed content is determined appropriately.

[0116] Reference Figure 8 , describing unit C at coordinate x. Unit C includes subunit K0, subunit K1, and subunit K2. Subunit K0 has three protruding components T0 arranged parallel to the direction of azimuth angle φ0. Subunit K1 has two protruding components T1 arranged parallel to the direction of azimuth angle φ1. Subunit K2 has three protruding components T2 arranged parallel to the direction of azimuth angle φ2.

[0117] The protruding member T has a predetermined height. Therefore, when the display medium 1 is viewed from a certain elevation angle, portions of the surface of the display medium 100 are obscured by the protruding member T and portions are not obscured. When viewing from an azimuth angle φ0, the user can visually recognize the colored portion 102 of the subunit K0 having the protruding member T0 formed parallel to the azimuth angle φ0, but cannot visually recognize the colored portions 102 of the other subunits K1 or K2. When viewing from an azimuth angle φ1, the user can visually recognize the colored portion 102 of the subunit K1 having the protruding member T1 formed parallel to the azimuth angle φ1, but cannot visually recognize the colored portions 102 of the other subunits K0 or K2. When viewing from an azimuth angle φ2, the user can visually recognize the colored portion 102 of the subunit K2 having the protruding member T2 formed parallel to the azimuth angle φ2, but cannot visually recognize the colored portions 102 of the other subunits K0 or K1.

[0118] The display medium 100 of such a second embodiment can display three contents in three directions. The display medium 100 can display, at a first viewpoint in an azimuth angle φ0, a first content including RGB components with pixels seen from the first viewpoint. The display medium 100 can display, at a second viewpoint in an azimuth angle φ1, a second content with luminance of each cell having a positive correlation with an R value of the RGB components corresponding to each cell, with pixels seen from the second viewpoint. The display medium 100 can display, at a third viewpoint in an azimuth angle φ2, a third content with luminance of each cell having a positive correlation with a G value of the RGB components corresponding to each cell, with pixels seen from the third viewpoint.

[0119] In addition, in the second embodiment, it is ideal that a user can confirm each pixel of the coloring portion 102 of a sub-cell corresponding to a predetermined azimuth angle and cannot confirm each pixel of the coloring portion 102 of a sub-cell not corresponding to the azimuth angle when the user observes from the azimuth angle, but this is not always the case.

[0120] As Figure 9 shown, a case where a protruding member T1 is formed in a sub-cell K1 is considered. A user can confirm substantially all of the pixels within the sub-cell K1 when the user observes from a direction φ1 parallel to the protruding member T1. However, an unobserved pixel, i.e., a shield portion K1a, is formed within the sub-cell K1. In addition, an observed pixel, i.e., an exposed portion K2b, is sometimes formed within a sub-cell K2 not corresponding to the azimuth angle φ1. Therefore, in the processing of the allocation portion 117 described later, a pixel group seen from each viewpoint is determined, and a color is allocated to the determined pixel group to be displayed at the viewpoint.

[0121] Next, a processing device 110 that allocates a color to each pixel of the display medium 100 will be described.

[0122] As Figure 10 shown, the processing device 110 has each function of input image data 111, condition data 112, shape data 113, cell color data 114, and output data 115, a calculation portion 116, and an allocation portion 117. Each data is stored in a storage device such as a storage 902 or a storage device 903. Each function is installed in a CPU 901.

[0123] The input image data 111, the cell color data 114, and the output data 115 are the same as the input image data 11, the cell color data 12, and the output data 13 of Figure 6 The processing of the calculation portion 116 is the same as the processing of the calculation portion 16 of Figure 6 .

[0124] The condition data 112 is data that determines the azimuth and elevation angle at which content is displayed in the display medium 100. The shape data 113 is data that determines the position and height of the protruding member provided to each subunit of the display medium 100.

[0125] The assigning section 117 assigns a color to each pixel within the unit of the processing target such that the pixel viewed from the first viewpoint within the unit of the processing target displays a color including an RGB component, the pixel viewed from the second viewpoint within the unit of the processing target displays a color having a luminance positively correlated with the R value of the RGB component, and the pixel viewed from the third viewpoint within the unit of the processing target displays a color having a luminance positively correlated with the G value of the RGB component. Here, the pixel that becomes the object of the color assignment is a pixel within the unit of the processing target that does not form the protruding member.

[0126] The assigning section 117 determines a group of pixels viewed from the first viewpoint, a group of pixels viewed from the second viewpoint, and a group of pixels viewed from the third viewpoint, respectively, among the pixels within the unit of the processing target. For example, in the example of Figure 9 In the example of FIG. 6, the pixel viewed from the azimuth φ1 includes the exposed portion K2b within the subunit K2 and does not include the shielded portion K1a within the subunit K1.

[0127] The assigning section 117 assigns a color to each pixel such that the respective groups of pixels can express the value of the RGB that should be expressed in the unit of the processing target, the luminance corresponding to the value of the red of the RGB, and the luminance corresponding to the value of the green.

[0128] The processing device 110 repeatedly performs the process of assigning a color to each pixel for each unit and outputs the correspondence between the pixels and the colors in each unit to the output data 115. By inputting the output data 115 to a manufacturing device such as a printer, the display medium 100 in which each pixel is colored with an appropriate color is output. The printer can also be a 3D printer that can also form a protruding member.

[0129] The display medium 100 of the second embodiment, like the display medium 1 related to the first embodiment, can save space and display content that is easily viewed by both normal people and a small number of color vision characteristic holders.

[0130] (Technology A)

[0131] A display medium that can display three contents corresponding to three azimuths for a predetermined elevation angle and the three azimuths, in which

[0132] The display medium has a substrate that reflects light,

[0133] The substrate is divided into a plurality of units,

[0134] The plurality of units are divided into three sub-units corresponding to the three azimuth angles, respectively,

[0135] In each of the sub-units corresponding to the predetermined azimuth angle, a protruding member having a surface in the predetermined azimuth angle direction is formed to shield light,

[0136] The sub-unit corresponding to the predetermined azimuth angle is observed from the predetermined elevation angle and the predetermined azimuth angle,

[0137] A pixel observed from a first viewpoint among the plurality of pixels displays a first content including an RGB component, a pixel observed from a second viewpoint among the plurality of pixels displays a second content in which a luminance of each unit has a positive correlation with an R value of an RGB component corresponding to each unit, and a pixel observed from a third viewpoint among the plurality of pixels displays a third content in which a luminance of each unit has a positive correlation with a G value of an RGB component corresponding to each unit.

[0138] A person with a few color vision characteristics can visually recognize a composition of the contents by repeatedly observing the first content, the second content, and the third content by changing the viewpoint.

[0139] (TECHNICAL B)

[0140] A processing device that allocates colors to the pixels of the display medium described in TECHNICAL A,

[0141] The display medium includes a plurality of units,

[0142] The processing device includes:

[0143] a calculation section that calculates each value of red, green, and blue of a color displayed by a predetermined unit in the first content, and

[0144] an allocation section that allocates a color to each pixel in the predetermined unit so that a pixel observed from the first viewpoint within the predetermined unit displays a color including an RGB component, a pixel observed from the second viewpoint within the predetermined unit displays a color having a luminance having a positive correlation with an R value of the RGB component, and a pixel observed from the third viewpoint within the predetermined unit displays a color having a luminance having a positive correlation with a G value of the RGB component.

[0145] (VARIATION OF THE SECOND EMBODIMENT)

[0146] In the second embodiment, a case where three contents are displayed in three directions is described, but in a modified example, a case where two contents are displayed in two directions is described. The display medium 100 of the modified example of the second embodiment, like the display medium 1 of the modified example of the first embodiment, displays a first content containing RGB components in a first direction and a second content having luminance positively correlated with any one of R and G values of the RGB components in a second direction.

[0147] In a case where the luminance of the second content has positive correlation with the R value, the display medium 100 displays the first content containing RGB components with pixels observed from the first viewpoint in the plurality of pixels and displays the second content having luminance positively correlated with the R value of the RGB components of each unit with pixels observed from the second viewpoint in the plurality of pixels. The allocation section 117 of the processing device 110 allocates colors to each pixel in a predetermined unit so that a color containing RGB components is displayed with pixels observed from the first viewpoint in the predetermined unit and a color having luminance positively correlated with the R value of the RGB components is displayed with pixels observed from the second viewpoint in the predetermined unit. The display medium 100 displays easily viewable contents to normal persons as well as to a few color vision characteristic holders who have difficulty in recognizing red.

[0148] In a case where the luminance of the second content has positive correlation with the G value, the display medium 100 displays the first content containing RGB components with pixels observed from the first viewpoint in the plurality of pixels and displays the second content having luminance positively correlated with the G value of the RGB components of each unit with pixels observed from the second viewpoint in the plurality of pixels. The allocation section 117 of the processing device 110 allocates colors to each pixel in a predetermined unit so that a color containing RGB components is displayed with pixels observed from the first viewpoint in the predetermined unit and a color having luminance positively correlated with the G value of the RGB components is displayed with pixels observed from the second viewpoint in the predetermined unit. The display medium 100 displays easily viewable contents to normal persons as well as to a few color vision characteristic holders who have difficulty in recognizing green.

[0149] The display medium 100 of the modified example of the second embodiment can save space and display contents easily viewable by both normal persons and a few color vision characteristic holders.

[0150] (Third Embodiment)

[0151] In the first embodiment, a case where the display medium is formed using the technology described in Patent Literature 2 is described. In the second embodiment, a case where the display medium 200 is formed using the technology described in Patent Literature 3 is described.

[0152] The display medium 200 of the third embodiment displays content that can be visually recognized by normal people and people with a limited number of color vision characteristics. The display medium 200 displays three contents corresponding to three azimuth angles based on predetermined elevation and azimuth angles.

[0153] In the third embodiment, the surface of the display medium 200 has multiple cells. The cells divide the space above the cell C into radial zones in three directions, each with a color gamut. The cells C are formed so that the color gamuts they perceive differ when viewed from each of the first to third directions. Here, "different color gamuts" means not completely identical, including not only completely different but also at least partially identical but partially different. The display medium 200 displays first content comprising RGB components in the first direction on each cell when viewed from a first viewpoint in the first direction. The first content is formed by each pixel in each cell when viewed from the first viewpoint. In the second direction, the display medium 200 displays second content whose luminance, when viewed from a second viewpoint in the second direction, is positively correlated with the R value corresponding to the RGB component of each cell. The second content is formed by each pixel in each cell when viewed from the second viewpoint. In the third direction, the display medium 200 displays third content whose luminance, when viewed from a third viewpoint in the third direction, is positively correlated with the G value corresponding to the RGB component of each cell. The third content is formed by each pixel in each cell when viewed from the third viewpoint.

[0154] The display medium 200 of the third embodiment, similarly to the first embodiment, can save space and display content that is easily visible to both normal people and people with limited color vision characteristics.

[0155] like Figure 11 As shown, the display medium 200 includes a substrate 201. The substrate 201 may be in the form of a thin sheet such as paper, or may be in a three-dimensional shape. The upper surface of the substrate 201 may be flat or curved.

[0156] The upper surface of the substrate 101 is divided into a plurality of cells C. The plurality of cells may be arranged adjacent to each other or may be arranged separately from each other.

[0157] One partition P is provided in one cell C. The partition P is formed on a plane intersecting with the substrate 201 and has a portion exposed when the display medium 200 is viewed from three directions. The partition P has a plurality of pixels on its surface.

[0158] like Figure 12As shown, the partitions P are formed to radially divide the space on the cell C into three directions from a point on the cell C. In the third embodiment, the partitions P divide the first, second, and third viewpoints on the upper X-axis of the display medium 200. The partitions P can be arranged to contact the outer edge of the cell C without connecting to the partitions of adjacent cells. Alternatively, the partitions P can be arranged to connect to the partitions of adjacent cells C.

[0159] The skeleton of the partition P is a part of the Voronoi surface in the Voronoi graph having points virtually set in each of the three directions as the source points.

[0160] A plurality of pixels are provided on the surface of the partition P. The display medium 200 displays first content including RGB components using pixels from among the plurality of pixels when viewed from a first viewpoint. The display medium 200 displays second content in which the brightness of each cell has a positive correlation with the R value corresponding to the RGB component of each cell using pixels from among the plurality of pixels when viewed from a second viewpoint. The display medium 200 displays third content in which the brightness of each cell has a positive correlation with the G value corresponding to the RGB component of each cell using pixels from among the plurality of pixels when viewed from a third viewpoint.

[0161] Furthermore, the combination of viewpoints and content displayed for those viewpoints can be appropriately set. For example, content can be displayed with pixels viewed from a second viewpoint showing a positive correlation between the brightness of each cell and the G value corresponding to the RGB component of each cell, while content can be displayed with pixels viewed from a third viewpoint showing a positive correlation between the brightness of each cell and the R value corresponding to the RGB component of each cell.

[0162] A minority of people with color vision characteristics can visually recognize the composition of the contents by repeatedly viewing the first content, the second content, and the third content from different viewpoints.

[0163] Reference Figure 13 The shape of the partition P will be described. In the third embodiment, a Voronoi diagram is virtually formed relative to a generator point virtually positioned in the direction of the displayed content. The partition P includes a Voronoi surface in the Voronoi diagram within its skeleton. Partition P is thickened relative to the Voronoi surface serving as the skeleton. The surface of partition P includes a surface parallel to the Voronoi surface.

[0164] exist Figure 13 In the example shown, three viewpoints E1, E2, and E3 are set. Generic points H1, H2, and H3 are set on the line of sight when visually recognizing the center Cs of the cell C from each viewpoint E1, E2, and E3. Generic points H1, H2, and H3 are set on a virtual sphere of a predetermined radius centered on the center Cs of the cell C.

[0165] The partition P has two shielding members W1 and W2. The shielding members W1 and W2 divide the space above the cell C where the partition P is installed into three areas.

[0166] The shielding member W1 is formed with a Voronoi surface Q1 as its framework and has a thickness of 1. The shielding member W2 is formed with a Voronoi surface Q2 as its framework and has a thickness of 1. The front end of the shielding member W1 is formed into a circular shape with a radius of 1.

[0167] The shielding part W1 divides the space on the cell C into a space A1 corresponding to the viewpoint E1 and a space A2 corresponding to the viewpoint E2. The shielding part W2 divides the space on the cell C into a space A2 corresponding to the viewpoint E2 and a space A3 corresponding to the viewpoint E2.

[0168] The portion of the surface of the partition P that is exposed when the display medium 200 is viewed from a predetermined designated direction among the three designated directions includes portions that are obscured when the display medium 200 is viewed from directions other than the predetermined designated 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 designated directions. The surface of the partition P displays the color of the content corresponding to the direction of exposure. This allows the display medium 200 to display different portions of content for each of the three designated directions, thereby enabling the display of multiple contents with a wide color gamut and high brightness.

[0169] For example, in Figure 13 In the example shown, the surface of the shielding member W1 on the space A1 side has a portion that is visually recognizable from viewpoint E1 but not from viewpoint E2 or viewpoint E3. The surface of the shielding member W1 on the space A2 side has a portion that is visually recognizable from viewpoint E2 but not from viewpoint E1 or viewpoint E3. The surface of the shielding member W2 on the space A2 side has a portion that is visually recognizable from viewpoint E2 but not from viewpoint E1 or viewpoint E3. The surface of the shielding member W2 on the space A3 side has a portion that is visually recognizable from viewpoint E3 but not from viewpoint E1 or viewpoint E2.

[0170] Each surface of the partition P is designed to be easily visible from one of the three directions and difficult to see from the other two directions. Each surface of the partition P balances the effect of emitting a color that reflects the content from one direction with the effect of blocking light from directions other than that direction. Therefore, the display medium 200 can display different content in the three directions. Furthermore, the display medium 200 can display content with a wide color gamut and high brightness in all three directions. Each surface of the partition P suppresses the influence of sightlines from directions other than the designated direction, thereby imparting an appropriate color to the surface viewed from the designated direction.

[0171] Next, a processing device that assigns colors to each pixel of the display medium 200 will be described. The processing device has the same structure as the processing device 110 of the second embodiment shown in FIG. 2. Figure 14 The processing device 110 of the second embodiment has the same structure as the processing device 110 of the first embodiment shown in FIG. 1.

[0172] The condition data 112 is data that determines the direction in which content is displayed in the display medium 200. The shape data 113 is a parameter related to the partition P of the display medium 200, specifically, data of the thickness 1, the size of the virtual hemisphere when the Voronoi plane is cut, and the like.

[0173] The assigning section 117 assigns colors to each pixel within the unit of the processing target so that the pixel within the unit of the processing target that is seen from the first viewpoint displays a color including an RGB component, the pixel within the unit of the processing target that is seen from the second viewpoint displays a color having a luminance that has a positive correlation with the R value of the RGB component, and the pixel within the unit of the processing target that is seen from the third viewpoint displays a color having a luminance that has a positive correlation with the G value of the RGB component. Here, the pixel that becomes the object of the color assignment is the pixel within the unit of the processing target that is seen from a certain viewpoint.

[0174] The assigning section 117 respectively specifies a group of pixels seen from the first viewpoint, a group of pixels seen from the second viewpoint, and a group of pixels seen from the third viewpoint among the pixels of the partition P within the unit of the processing target.

[0175] The assigning section 117 assigns colors to each pixel so that each group of pixels can express the value of the RGB that should be expressed by the unit of the processing target, the luminance corresponding to the value of the red of the RGB, and the luminance corresponding to the value of the green.

[0176] The processing device 110 repeatedly performs the process of assigning colors to each pixel for each unit, and outputs the correspondence between the pixels and the colors in each unit to the output data 115. By inputting the output data 115 to a manufacturing device such as a printer, a display medium 100 in which each pixel is colored with an appropriate color is output. The printer can also be a 3D printer that can form a partition.

[0177] The display medium 200 of the third embodiment, like the display medium 1 related to the first or second embodiment, can save space and display content that is easily seen by both normal people and a small number of color vision characteristic holders.

[0178] (Technology C)

[0179] A display medium that displays different three contents in three directions, characterized by comprising:

[0180] a base material that comprises a plurality of virtual units; and

[0181] a partition having a surface formed on a plane intersecting the substrate and a portion exposed when the display medium is viewed from each of three directions,

[0182] the skeleton of the partition includes a portion of a Voronoi surface in a Voronoi diagram having a point virtually disposed in each of the plurality of directions as a parent point,

[0183] the first content displayed by pixels observed from a first viewpoint among the plurality of pixels in the partition includes RGB components, the second content displayed by pixels observed from a second viewpoint among the plurality of pixels includes luminance of each cell and R values of RGB components corresponding to each cell have a positive correlation, and the third content displayed by pixels observed from a third viewpoint among the plurality of pixels includes luminance of each cell and G values of RGB components corresponding to each cell have a positive correlation,

[0184] a few color vision characteristic holders can visually recognize a composition of the content by repeatedly viewing the first content, the second content, and the third content by changing the viewpoint.

[0185] (Technology D)

[0186] A display medium that displays different three contents in three directions, respectively, characterized by comprising:

[0187] a substrate including a plurality of virtual cells; and

[0188] a partition having a surface formed on a plane intersecting the substrate and a portion exposed when the display medium is viewed from each of three directions,

[0189] the partition is disposed so as to be in contact with an outer edge of the cell, and a space on the cell is divided radially for each of the three directions from the cell,

[0190] the first content displayed by pixels observed from a first viewpoint among the plurality of pixels in the partition includes RGB components, the second content displayed by pixels observed from a second viewpoint among the plurality of pixels includes luminance of each cell and R values of RGB components corresponding to each cell have a positive correlation, and the third content displayed by pixels observed from a third viewpoint among the plurality of pixels includes luminance of each cell and G values of RGB components corresponding to each cell have a positive correlation,

[0191] a few color vision characteristic holders can visually recognize a composition of the content by repeatedly viewing the first content, the second content, and the third content by changing the viewpoint.

[0192] (Modified Example of the Third Embodiment)

[0193] In the third embodiment, the case where three contents are displayed in three directions is described, but in the modified example, the case where two contents are displayed in two directions is described. The display medium 200 of the modified example of the third embodiment, like the display medium 1 of the modified example of the first embodiment, displays the first content containing RGB components in the first direction and the second content having luminance positively correlated with any one of the R value and the G value of the RGB components in the second direction.

[0194] In the case where the luminance of the second content has positive correlation with the R value, the display medium 200 displays the first content containing RGB components in the pixels viewed from the first viewpoint among the plurality of pixels provided in the partition P and displays the second content having luminance positively correlated with the R value of the RGB components corresponding to each unit in the pixels viewed from the second viewpoint among the plurality of pixels. The allocation section 117 of the processing device 110 allocates colors to each pixel within a predetermined unit so that the first content containing RGB components is displayed in the pixels viewed from the first viewpoint among the plurality of pixels provided in the partition P and the second content having luminance positively correlated with the R value of the RGB components corresponding to each unit is displayed in the pixels viewed from the second viewpoint among the plurality of pixels. The display medium 200 displays easily viewable content to the normal person as well as to the minority color vision characteristic holder who has difficulty in recognizing red.

[0195] In the case where the luminance of the second content has positive correlation with the G value, the display medium 200 displays the first content containing RGB components in the pixels viewed from the first viewpoint among the plurality of pixels provided in the partition P and displays the second content having luminance positively correlated with the G value of the RGB components corresponding to each unit in the pixels viewed from the second viewpoint among the plurality of pixels. The allocation section 117 of the processing device 110 allocates colors to each pixel within a predetermined unit so that the first content containing RGB components is displayed in the pixels viewed from the first viewpoint among the plurality of pixels provided in the partition P and the second content having luminance positively correlated with the G value of the RGB components corresponding to each unit is displayed in the pixels viewed from the second viewpoint among the plurality of pixels. The display medium 200 displays easily viewable content to the normal person as well as to the minority color vision characteristic holder who has difficulty in recognizing green.

[0196] The display medium 200 of the modified example of the third embodiment can save space and display content easily viewable by both the normal person and the minority color vision characteristic holder.

[0197] The processing device 10 of the present embodiment described above is implemented using, for example, a general-purpose computer system including a CPU (Central Processing Unit) 901, a memory 902, a storage device 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 onto the memory 902, thereby implementing each function of the processing device 10. In addition, the processing device 110 is also implemented using a general-purpose computer system as with the processing device 10.

[0198] In addition, the processing device 10 can be implemented by one computer, or can also be implemented by a plurality of computers. In addition, the processing device 10 can also be a virtual machine installed on a computer.

[0199] The program of the processing device 10 can be stored in a HDD, an SSD, a USB (Universal Serial Bus) memory, a CD (Compact Disc), a DVD (Digital Versatile Disc), or the like, which is a computer-readable recording medium, or can be distributed via a network. The computer-readable recording medium is, for example, a non-transitory recording medium.

[0200] In addition, the present disclosure is not limited to the above-described embodiments, and various modifications can be made within the scope of the gist thereof.

[0201] Any part or all of each functional section described in the present disclosure can also be implemented by a program. The program mentioned in the present disclosure can be distributed non-transitorily recorded on a computer-readable recording medium, can be distributed via a communication line (including wireless communication) such as the Internet, or can be distributed in a state installed on an arbitrary terminal.

[0202] Based on the above description, a person skilled in the art can conceive of additional effects, various modifications of the present disclosure, but the modes of the present disclosure are not limited to the above-described embodiments. Various additions, changes, or partial deletions can be made within the scope of the conceptual idea and the gist of the present disclosure as defined by the scope of the claimed invention and equivalents thereof.

[0203] For example, a device (including a device depicted as one device in the drawings) described as one device (or component, hereinafter the same) in the present disclosure can also be implemented by a plurality of devices. Conversely, a device (including a device depicted as a plurality of devices in the drawings) described as a plurality of devices in the present disclosure can also be implemented by one device. Or, a part or all of units included in a certain device can be included in another device. In addition, a "system" can be constituted by one device or two or more devices.

[0204] In addition, all matters described in the present disclosure are not necessarily essential elements. In particular, matters described in the present disclosure, which are not described in the claims, can be referred to as arbitrary additional matters.

[0205] Further, the present disclosure does not necessarily aim at solving the problems in the document known inventions described in the "Prior Art Documents" column of the present disclosure, and it should be noted that the present disclosure does not necessarily aim at solving the problems in the document known inventions. The problems to be solved by the present disclosure should be determined by considering the entire present disclosure. For example, in the present disclosure, in the case where there is a description that a predetermined effect is exerted by a specific structure, a problem opposite to the predetermined effect can be solved. However, such a specific structure is not necessarily required as an essential condition.

[0206] Symbol explanation

[0207] 1, 100, 200 display medium

[0208] 10, 110 processing device

[0209] 11, 111 input image data

[0210] 12, 114 unit color data

[0211] 13, 115 output data

[0212] 16, 116 calculation section

[0213] 17, 117 distribution section

[0214] 112 condition data

[0215] 113 shape data

[0216] 901 CPU

[0217] 902 memory

[0218] 903 storage device

[0219] 904 communication device

[0220] 905 input device

[0221] 906 output device

[0222] A space

[0223] C unit

[0224] G color gamut

[0225] H parent point

[0226] K subunit

[0227] L layer

[0228] M substrate

[0229] N transparent layer

[0230] P partition

[0231] T protruding member

[0232] W shielding member

[0233] φ azimuth angle.

Claims

1. A display medium that displays content that can be visually recognized by normal people and people with a limited number of color vision characteristics, characterized in that: displaying a first content including RGB components in a first direction, A second content having a brightness positively correlated with either the R value or the G value of the RGB components is displayed in a second direction.

2. The display medium according to claim 1, wherein A ratio of the one value of the RGB component of the first content to a value range of the one value corresponds to a ratio of a value of luminance of the second content to a value range of luminance.

3. The display medium according to claim 1, wherein There are a plurality of units on the surface of the display medium. The unit has a protruding component with light-shielding properties and a color domain on the surface. The unit is formed so that the color gamuts that are visually recognized are different when visually recognized from a first direction and a second direction.

4. The display medium according to claim 1, wherein There are a plurality of units on the surface of the display medium. The cell has a partition that divides the space on the cell into radial shapes in two directions and has a color gamut. The unit is formed so that the color gamuts that are visually recognized are different when visually recognized from a first direction and a second direction.

5. The display medium according to claim 1, wherein The display medium comprises: an upper surface layer formed of a transparent member and having a plurality of upper surface units, each of the plurality of upper surface units having a color domain; as well as The lower surface layer is formed of a transparent member and has a plurality of lower surface units, each of which has a color domain. The unit including the upper surface unit of the upper surface layer and the lower surface unit of the lower surface layer overlapping with the upper surface unit is formed so that, when visually recognized from the first direction and the second direction, in the color gamut of the lower surface unit, the overlapping parts of the color gamut of the upper surface unit are different from each other, In each unit observed from a first viewpoint in the first direction, a first content including RGB components is displayed in the first direction, Second content is displayed in the second direction in which the brightness of each cell viewed from a second viewpoint in the second direction and the value of the one of the RGB components corresponding to the cell are positively correlated.

6. A processing device for allocating colors to a color gamut in a display medium, The display medium comprises: an upper surface layer formed of a transparent member and having a plurality of upper surface units, each of the plurality of upper surface units having a color domain; and The lower surface layer is formed of a transparent member and has a plurality of lower surface units, each of which has a color domain. The unit including the upper surface unit of the upper surface layer and the lower surface unit of the lower surface layer overlapping with the upper surface unit is formed so that, when visually recognized from the first direction and the second direction, in the color gamut of the lower surface unit, the overlapping parts of the color gamut of the upper surface unit are different from each other, The upper surface unit and the lower surface unit respectively have the color domain and a transparent area without color, The color domain is provided at a position away from the end of each of the upper surface unit and the lower surface unit and includes a plurality of pixels. It is characterized by: The processing device has: a calculation unit that calculates each value of RGB of a color displayed in each cell for the content displayed in the first direction; and An allocating unit allocates colors to each pixel of the upper surface unit and the lower surface unit for each unit so that the color of each calculated RGB value is displayed in the first direction, and a color having a brightness positively correlated with either the R value or the G value is displayed in the second direction.

7. A method of assigning colors to a color gamut in a display medium, The display medium comprises: an upper surface layer formed of a transparent member and having a plurality of upper surface units, each of the plurality of upper surface units having a color domain; and The lower surface layer is formed of a transparent member and has a plurality of lower surface units, each of which has a color domain. The unit including the upper surface unit of the upper surface layer and the lower surface unit of the lower surface layer overlapping with the upper surface unit is formed so that, when visually recognized from the first direction and the second direction, in the color gamut of the lower surface unit, the overlapping parts of the color gamut of the upper surface unit are different from each other, The upper surface unit and the lower surface unit respectively have the color domain and a transparent area without color, The color domain is provided at a position away from the ends of each of the upper surface unit and the lower surface unit and includes a plurality of pixels. It is characterized by: The upper surface unit and the lower surface unit respectively have the color domain and a transparent area without color, The color domain is provided at a position away from the end of each of the upper surface unit and the lower surface unit and includes a plurality of pixels. The computer calculates the RGB values ​​of the color displayed in the cell for the content displayed in the first direction. In the unit, the computer assigns colors to each pixel of the upper surface unit and the lower surface unit so that the colors of the calculated RGB values ​​are displayed in the first direction, and the colors with brightness that has a positive correlation with any one of the R value and the G value are displayed in the second direction.

8. A program, characterized in that This is for causing a computer to function as the processing device according to claim 6.

Images