JP7051628B2 - Display media, display support media, processing equipment and processing programs - Google Patents

Description

The present invention relates to a display medium, a display support medium, a processing device, and a processing program capable of displaying a predetermined number of contents corresponding to a predetermined number of azimuths from a predetermined elevation angle and azimuth angle.

In order to realize efficient information display on a display medium, there is a display medium capable of displaying a plurality of information (see Patent Document 1). According to the invention described in Patent Document 1, a large number of self-luminous elements are attached to the display surface of the sign board in the diagonally left direction and the diagonally right direction, respectively, and the self-luminous elements are attached in the diagonally left direction. The element and the self-luminous element mounted diagonally to the right are formed so that the display appears and the display cannot be seen from the opposite direction. This makes it possible to display two types of information with one sign. Patent Document 1 has a configuration in which a plurality of holes are provided on the surface of a sign plate and a self-luminous element is embedded in the holes.

Japanese Unexamined Patent Publication No. 8-333727

In the invention described in Patent Document 1, since the self-luminous element mounted diagonally to the left and the self-luminous element mounted diagonally to the right have the same outlet, different colors are used for each self-luminous element. If given, each color may be mixed. The invention described in Patent Document 1 enables information display in a single color, and cannot display information using a plurality of desired colors.

Therefore, an object of the present invention is to provide a display medium, a display support medium, a processing device, and a processing program for appropriately displaying a predetermined number of contents corresponding to a predetermined number of azimuth angles.

In order to solve the above problems, the first feature of the present invention relates to a display medium capable of displaying a predetermined number of contents corresponding to a predetermined number of azimuths from a predetermined elevation angle and azimuth angle. The display medium according to the first feature has a flat member that reflects light and a plane that shields light parallel to each of a predetermined number of azimuth angles on the flat member, and is arranged perpendicular to the flat member. It is provided with a plurality of projecting members. The plane member is divided into a plurality of unit cells, each of the plurality of unit cells is divided into a predetermined number of subcells corresponding to a predetermined number of azimuths, and each subcell corresponding to a predetermined azimuth has a predetermined azimuth angle. A protruding member with parallel planes is formed.

The second feature of the present invention is a display support medium that can be attached to a display surface having a plane that reflects light and can display a predetermined number of contents corresponding to a predetermined number of azimuths from a predetermined elevation angle and azimuth angle. Regarding. The display support medium according to the second feature of the present invention has a sheet-shaped member that transmits light and a surface that shields light and is parallel to each of a predetermined number of azimuth angles on a flat member. It has a plurality of projecting members arranged perpendicular to the sheet-shaped member. The sheet-like member is divided into a plurality of unit cells, each of the plurality of unit cells is divided into a predetermined number of subcells corresponding to a predetermined number of azimuths, and each subcell corresponding to a predetermined azimuth has a predetermined azimuth angle. A protruding member having a surface parallel to the surface is formed.

Here, even if the area ratio of each subcell in the unit cell and the shape of the projecting member are formed so that the amount of light blocking by the projecting member is reduced with respect to the light of the predetermined subcell when viewed from a predetermined azimuth angle. good.

Further, the area ratio of each subcell and the shape of the projecting member in the unit cell may be formed so that the amount of light from the direction other than the predetermined direction or the subcell other than the predetermined subcell is reduced.

Further, the area ratio of each subcell in the unit cell and the shape of the projecting member may be formed so that the standard deviation of the reflected luminance of each subcell is small.

Further, by observing at an elevation angle different from a predetermined elevation angle, it may be possible to display contents different from the predetermined number of contents.

The third feature of the present invention relates to a processing apparatus used for manufacturing a display medium according to the first feature of the present invention. The processing device according to the third feature of the present invention includes condition data including the number of contents to be displayed on a display medium, an elevation angle and an azimuth, and a color value of each unit cell of each content corresponding to a predetermined number of azimuths. With respect to the storage device that stores the input color value data and the light of the predetermined subcell as seen from the predetermined azimuth, the amount of light shielding by the projecting member, the direction other than the predetermined direction, or the subcell other than the predetermined subcell. The display medium from the shape specifying part that specifies the area ratio of each subcell and the shape of the projecting member, and the predetermined elevation and azimuth so that the amount of light or the standard deviation of the reflected brightness of each subcell is reduced. Is assigned to each subcell of the unit cell so that the difference between the color value observable in the predetermined unit cell and the color value at the position corresponding to the unit cell stored in the input color value data is small. It is provided with a color value calculation unit for calculating the color value to be performed.

The fourth feature of the present invention relates to a processing apparatus used for manufacturing a display support medium according to the second feature of the present invention. The processing device according to the fourth feature of the present invention includes condition data including the number of contents, elevation angle and azimuth angle to be displayed by the display support medium, and the color of each unit cell of each content corresponding to a predetermined number of azimuth angles. A storage device that stores input color value data for storing values, and the amount of shading by the projecting member for the light of a predetermined subcell when viewed from a predetermined azimuth, a direction other than the predetermined direction, or a subcell other than the predetermined subcell. A shape specifying portion for specifying the area ratio of each subcell and the shape of the projecting member is provided so that the amount of light from the subcell or the standard deviation of the reflected brightness of each subcell is reduced.

The fifth feature of the present invention is the color of each position of the display surface corresponding to each subcell for displaying a predetermined number of contents on the display surface to which the display support medium according to the second feature of the present invention is attached. The present invention relates to a processing device for calculating a value. The processing device according to the fifth feature is a storage device that stores the color value of each unit cell of each content corresponding to a predetermined number of azimuths, and a display to which a display support medium is attached from a predetermined elevation angle and azimuth angle. The color value of the unit cell so that the difference between the color value that can be observed in the predetermined unit cell when observing the surface and the color value of the content corresponding to the predetermined azimuth at the position corresponding to the unit cell is minimized. A color value calculation unit for calculating a color value given to each position on the display surface corresponding to each subcell is provided.

A sixth feature of the present invention relates to a processing program for causing a computer to function as the processing apparatus according to the third to fifth features of the present invention.

According to the present invention, it is possible to provide a display medium, a display support medium, a processing device, and a processing program for appropriately displaying a predetermined number of contents corresponding to a predetermined number of azimuth angles.

1 (a) is a perspective view of a display medium according to an embodiment of the present invention, and FIG. 1 (b) is a perspective view of a unit cell. FIG. 2 is a diagram illustrating a relationship between an azimuth for observing content on a display medium and a protruding member. FIG. 3 is a diagram illustrating a portion shielded by the projecting member and a portion not shielded. 4 (a) is a diagram for explaining the reflected light observed at a predetermined azimuth angle, and FIG. 4 (b) explains the reflected light observed at a different azimuth angle from FIG. 4 (a). It is a figure to do. 5 (a) is a top view of the unit cell according to the embodiment of the present invention, and FIG. 5 (b) explains an azimuth angle at which content can be confirmed in the unit cell shown in FIG. 5 (a). It is a figure to do. FIG. 6 is a diagram illustrating an example of content that can be observed using the unit cell shown in FIG. 5A and that differs for each azimuth angle. FIG. 7 is a diagram illustrating a hardware configuration and a functional block of a processing apparatus used for forming a display medium according to an embodiment of the present invention. FIG. 8 is a diagram illustrating peripheral subcells that can be observed when a predetermined subcell is observed from a predetermined azimuth angle. FIG. 9 is a diagram illustrating a display support medium according to the first modification. FIG. 10 is a diagram illustrating a hardware configuration and a functional block of a processing device used for forming the display medium according to the first modification. FIG. 11 is a diagram illustrating the shape of the protruding member according to the second modification. FIG. 12 is a diagram illustrating an example of content in which a further different content can be observed when the elevation angle is set to 90 degrees in the third modification.

Next, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals.

(Display medium)
The display medium 1 according to the embodiment of the present invention will be described with reference to FIG. The display medium 1 according to the embodiment of the present invention is formed so as to be able to display a predetermined number of contents corresponding to a predetermined number of azimuth angles from a predetermined elevation angle and azimuth angle. The display medium 1 can display contents by observing from a predetermined elevation angle at a predetermined azimuth angle, and can display different contents by changing the azimuth angle. The display medium 1 can display a plurality of contents for each predetermined azimuth angle. Further, the elevation angle when the observer observes the content may be different for each content. In the embodiment of the present invention, the content is a still image.

As shown in FIG. 1 (a), the display medium 1 is provided with a colored portion 4 on the flat surface of the flat surface member 2. The plane member 2 has a plane that reflects light. The flat member 2 may be any as long as it can be specularly reflected or diffused. Further, the flat member 2 is preferably formed of a metal having a high mirror surface component from the viewpoint of improving visibility. The colored portion 4 is a portion colored with ink.

As shown in FIG. 1A, the plane of the plane member 2 is divided into a plurality of unit cells C. Further, as shown in FIG. 1B, each of the plurality of unit cells C is divided into a predetermined number of subcells B corresponding to a predetermined number of azimuth angles.

Here, the unit cell C and the subcell B may be virtual divisions. For example, if the same color value is given to two adjacent subcells B, or depending on the arrangement of the projecting member 3, the boundary between the subcells B or the unit cell C may not be visible.

In the example shown in FIG. 1, the case where the plane member 2 is a rectangular parallelepiped will be described, but it is sufficient that the plane member 2 has a plane and the coloring portion 4 is provided on the plane. Further, although the case where the unit cell C and the subcell B are each rectangular will be described, the shapes of the unit cell C and the subcell B are not limited.

The number of subcells B in one unit cell C corresponds to the number of contents that can be displayed on the display medium 1. For example, in the example shown in FIG. 1, since one unit cell C is divided into three subcells B, it is possible to display at least three contents. As shown in the third modification described later, it is possible to display four or more contents depending on the contents of the three contents. Each subcell B corresponding to a predetermined azimuth of the coloring unit 4 is given a color of each portion corresponding to the position of each subcell B constituting the content corresponding to the predetermined azimuth.

As shown in FIG. 1 (b), in each subcell B, a plate-shaped projecting member 3 is arranged perpendicular to the flat member 2. In the example shown in FIG. 1 (b), the case where two projecting members 3 are provided in each subcell B is described, but one projecting member 3 may be provided in each subcell B, or a plurality of projecting members 3 may be provided. The projecting member 3 may be provided.

The projecting member 3 has a surface that is parallel to the plane member 2 and shields light with respect to each of a predetermined number of azimuth angles. The projecting member 3 is preferably formed of an opaque member that shields light, but may be formed so that a part of light is transmitted within a range that does not affect the visibility of the observer. In each subcell B corresponding to a predetermined azimuth angle, a protruding member 3 having a surface parallel to the predetermined azimuth angle is formed.

When a plurality of projecting members 3 are provided in one subcell B, the projecting members 3 are arranged in parallel with each other. The projecting members 3 are arranged in different directions for each subcell B in which the projecting members 3 are provided, and the projecting members 3 disposed in the different subcells B are arranged so as not to be parallel to each other. ..

The display medium 1 according to the embodiment of the present invention is observed at a predetermined elevation angle. As shown in FIG. 1 (b), since the plate-shaped projecting member 3 is vertically provided on the plane of the flat surface member 2, the display medium 1 is shielded by the projecting member 3 when the display medium 1 is observed from a predetermined elevation angle. The colored portion 4 that is not formed is confirmed.

The area ratio of each subcell B in the unit cell C and the shape of the projecting member 3 are (1) the amount of light shielding by the projecting member 3 with respect to the light of the predetermined subcell B viewed from a predetermined azimuth angle, and (1). 2) At least one of (1) to (3) with respect to the amount of light from a direction other than the predetermined direction or the subcell B other than the predetermined subcell B and (3) the standard deviation of the reflected brightness of each subcell B. Is formed so that there is less. The method for specifying the shape of each subcell B and the protruding member 3 will be described in detail later.

With reference to FIG. 2, the elevation angle and the orientation for observing the display medium 1 according to the embodiment of the present invention will be described. FIG. 2A describes a case where the contents I0, I1 and I2 are displayed on the display medium 1.

When the coordinates x on the display medium 1 are observed at a predetermined elevation angle ω0 and an azimuth angle φ0, the color values of the coordinates of the content I0 corresponding to the coordinates x on the display medium 1 can be confirmed. Similarly, when the coordinates x on the display medium 1 are observed at a predetermined elevation angle ω1 and an azimuth angle φ1, the color values of the coordinates of the content I1 corresponding to the coordinates x on the display medium 1 can be confirmed. Further, when the coordinates x on the display medium 1 are observed at a predetermined elevation angle ω2 and an azimuth angle φ2, the color values of the coordinates of the content I2 corresponding to the coordinates x on the display medium 1 can be confirmed.

The unit cell C of the display medium 1 shown in FIG. 2A is formed as shown in FIG. 2B. The unit cell C includes a subcell B0, a subcell B1 and a subcell B2. In the subcell B0, three projecting members L0 parallel to the direction of the azimuth angle φ0 are arranged. In the subcell B1, two projecting members L1 parallel to the direction of the azimuth angle φ1 are arranged. In the subcell B2, three projecting members L2 parallel to the direction of the azimuth angle φ2 are arranged.

Since the projecting member 3 has a predetermined height, when the display medium 1 is observed from a certain elevation angle, a portion shielded by the projecting member 3 and a portion not shielded are generated. When the observer observes the display medium 1 from a certain elevation angle, the observer recognizes a portion that is not shielded by the projecting member 3.

The range in which the projecting member 3 shields light will be described with reference to FIG. In FIG. 3, it is assumed that the observer is observing at an elevation angle ω and an azimuth angle ψ. The height of the projecting member 3 is represented by h.

First, a case where the incident light is shielded by the projecting member 3 will be described. As shown in FIG. 3, among the light incident at a predetermined elevation angle ω, the light D1 incident on a position higher than the side S1 formed by the upper surface of the projecting member 3 and the surface facing the light source in the incident direction of the light. And D2 hit the plane of the plane member 2 and form reflected light. On the other hand, the light incident on the position lower than the side S1 is shielded by the projecting member 3. As a result, the color of the range R1 facing the light source in the incident direction of the light from the projecting member 3 is shielded by the projecting member 3. The range R1 is a range of h / tan (ω) at an angle of azimuth ψ from the installation position of the projecting member 3 on the plane of the flat member 2 in the direction facing the light source in the incident direction of the light. Is.

Next, a case where the incident light is reflected on the plane of the plane member 2 and the reflected light is shielded by the projecting member 3 will be described. As shown in FIG. 3, among the light reflected at a predetermined elevation angle ω, the light D3 and D4 incident on a position higher than the side S2 formed by the upper surface of the projecting member 3 and the surface of the light source in the incident direction of the light. Is observed by the observer. On the other hand, the light reflected at a position lower than the side S2 is shielded by the projecting member 3. As a result, the color of the range R2 in the light source direction in the incident direction of the light from the projecting member 3 is shielded by the projecting member 3. The range R2 is a range of h / tan (ω) at an angle of azimuth ψ from the installation position of the projecting member 3 to the light source direction in the incident direction of light on the plane of the flat member 2.

Here, as shown in FIG. 4, a case where the subcells B0 and B1 are observed at a predetermined elevation angle and azimuth angle will be described. 4 (a) and 4 (b) are views of subcells having the same configuration observed from different azimuth angles (viewpoints).

As shown in FIG. 4A, the observer sees the light from a light source having a relationship between the viewpoint direction and specular reflection (the azimuth angle is different by 180 degrees and the elevation angle is the same), and the light M1 incident on the subcell B0 is The reflected light M1'is generated by reaching the plane of the subcell B0 without being obstructed by the projecting member and being reflected by the plane of the subcell B0. The reflected light M1'is parallel to the projecting member of the subcell B0 on the subcell B0. In other words, the line on which the reflected light M1'is projected onto the subcell B0 and the projecting member of the subcell B0 are parallel to each other. Therefore, it is not shielded by the projecting member of the subcell B0, and the observer can confirm the reflected light M1'. The reflected light M1'has a colored color in the subcell B0.

The projecting member of the subcell B1 is formed so as not to be parallel to the projecting member of the subcell B0. Therefore, the light M2 incident on the subcell B1 is blocked by the projecting member of the subcell B1, and the light M2 does not reach the plane of the subcell B1, so that the observer cannot confirm the reflected light of the light M2. The light M3 reaches the plane of the subcell B1 without being blocked by the projecting member, and the reflected light M3'is generated. However, the reflected light M3'is blocked by the projecting member of the subcell B1, and the observer sees the reflected light. I can't confirm M3'.

As shown in FIG. 4B, the observer sees the light from a light source having a relationship between the viewpoint direction and specular reflection (the azimuth angle is different by 180 degrees and the elevation angle is the same), and the light M4 incident on the subcell B0 is Since the light M4 does not reach the plane of the subcell B0 because it is blocked by the projecting member of the subcell B1, the observer cannot confirm the reflected light of the light M4. The light M5 reaches the plane of the subcell B0 without being blocked by the projecting member, and the reflected light M5'is generated. However, the reflected light M5'is blocked by the projecting member of the subcell B0, and the observer sees the reflected light. I can't confirm M5'.

On the other hand, the light M6 incident on the subcell B1 reaches the plane of the subcell B1 without being blocked by the projecting member, and is reflected by the plane of the subcell B1 to generate the reflected light M6'. The reflected light M6'is parallel to the projecting member of the subcell B1 on the subcell B1. In other words, the line on which the reflected light MM6'is projected onto the subcell B1 and the projecting member of the subcell B1 are parallel to each other. Therefore, it is not shielded by the projecting member of the subcell B1, and the observer can confirm the reflected light M6'. The reflected light M6'has a colored color in the subcell B1.

When the display medium 1 having the subcells B0 and B1 shown in FIGS. 4A and 4B is observed, the reflected light M1'having the color of the subcell B0 is seen from the elevation angle and the azimuth angle shown in FIG. 4A. Observed. Further, from the elevation angle and the azimuth angle shown in FIG. 4B, the reflected light M6'having the color of the subcell B1 is observed. In this way, when the display medium 1 is observed from different azimuth angles, it is possible for the observer to recognize only the color of a specific subcell. Similarly, the other unit cells also configure the projecting member 3 so that each unit cell C has a plane parallel to the azimuth angle corresponding to each subcell B on the plane member 2.

As a result, when the observer observes the display medium 1 from a predetermined azimuth angle, for example, the color of the subcell B0 of each unit cell C can be observed, so that the observer is composed of the subcell B0 of each unit cell C. You can observe the content. Further, when observing from different azimuth angles, for example, since the color of the subcell B1 of each unit cell C can be observed, the content composed of the subcell B1 of each unit cell C can be observed. As described above, the display medium 1 can display a plurality of contents according to the azimuth angle at which the observer observes the display medium 1.

A unit cell C capable of displaying four or more contents will be described with reference to FIG. The unit cell C shown in FIG. 5A includes a first subcell B1, a second subcell B2, a third subcell B3, and a fourth subcell B4. Each subcell is colored with the color of the position of each content corresponding to the unit cell.

In the first subcell B1, two first protruding members L1 parallel to the first azimuth angle φ1 are provided in parallel with each other. Similarly, in the second subcell B2, two second protruding members L2 parallel to the second azimuth angle φ2 are provided parallel to each other, and in the third subcell B3, the third azimuth angle φ3 Two parallel third protruding members L3 are provided parallel to each other, and in the fourth subcell B4, two fourth protruding members L4 parallel to the fourth azimuth angle φ4 are provided parallel to each other. Be done. The first protruding member L1, the second protruding member L2, the third protruding member L3, and the fourth protruding member L4 are arranged so as not to be parallel to each other.

The display medium 1 according to the embodiment of the present invention is formed so that the content corresponding to each azimuth can be observed from a predetermined elevation angle and a plurality of azimuth angles. Specifically, when the display medium 1 is observed from the first azimuth angle φ1, it is possible to confirm the coloring of the first subcell B1, and most of the coloring of the other subcells is the second protruding member. It is shielded by L2, a third protruding member L3, and a fourth protruding member L4. Similarly, when the display medium 1 is observed from the second azimuth angle φ2, the coloring of the second subcell B2 can be confirmed, and when the display medium 1 is observed from the third azimuth angle φ3, the third subcell B2 can be confirmed to be colored. It is possible to confirm the coloring of the subcell B3 of the above, and when observing the display medium 1 from the fourth azimuth angle φ4, it is possible to confirm the coloring of the fourth subcell B4.

As shown in FIG. 5 (b), the azimuths in the observation direction described in FIG. 5 (a) are the second azimuth φ2 and the third azimuth when the first azimuth φ1 is 0 degrees. The φ3 and the fourth azimuth φ4 are formed to be 90 degrees, 45 degrees, and 135 degrees counterclockwise, respectively. In the case of the configuration of the subcell B shown in FIG. 5A, when the display medium 1 is observed from a predetermined elevation angle and each azimuth angle of 0 degree, 45 degree, 90 degree, and 135 degree, four types of contents are confirmed. Is possible.

Specifically, as shown in FIG. 6, four contents can be observed for each azimuth angle. When the azimuth angle is 0 degrees, the coloring of the first subcell B1 of each unit cell C is observed, and the image shown in FIG. 6A (“Girl with a Pearl Earring” by Johannes Vermeer) can be confirmed. When the azimuth angle is 90 degrees, the coloring of the second subcell B2 of each unit cell C is observed, and the image shown in FIG. 6B (“Mona Lisa” by Leonardo da Vinci) can be confirmed. When the azimuth angle is 45 degrees, the coloring of the third subcell B3 of each unit cell C is observed, and the image shown in FIG. 6 (c) (“screaming” by Edvard Munch) can be confirmed. When the azimuth angle is 135 degrees, the coloring of the fourth subcell B4 of each unit cell C is observed, and the image shown in FIG. 6D (“The Procuress” by Johannes Vermeer) can be confirmed. In the example shown in FIG. 6, the height, spacing, and the like of the projecting member 3 are optimized so that the content can be optimally confirmed when the elevation angle is 30 degrees.

In this way, the display medium 1 is divided into a plurality of unit cells C, the unit cells C are divided into a plurality of subcells B, and the projecting members 3 which are not parallel to each other are formed in each subcell B. Thereby, the display medium 1 according to the embodiment of the present invention can display a predetermined number of contents corresponding to a predetermined number of azimuths from a predetermined elevation angle and azimuth angle.

The display medium 1 according to the embodiment of the present invention can be applied to any size. For example, when the display medium 1 is A4 size, several centimeters square, or the like and is relatively small, the display medium 1 is formed by coloring the colored portion 4 and printing the protruding member 3 on the flat member 2. Can be done. For example, by using a UV (ultraviolet) printer, the colored portion 4 can be colored and the UV resin can be cured to form a fine uneven shape of the projecting member 3. On the other hand, when the display medium 1 is a signboard or the like and is relatively large, the display medium 1 is formed by providing a colored flat member 2 and a plate or the like to be a projecting member 3 on the flat member 2. May be.

Further, the number of contents that can be displayed by the display medium 1, the size of the unit cell C and the subcell B, the shape of the projecting member 3, the number of projecting members provided in one subcell B, and the like are the sizes of the display medium 1. It is adjusted appropriately according to the required resolution and the like. For example, when the size of the display medium 1 is about A4 size, the size of the unit cell C is about 1 mm, and about 3 to 5 protruding members 3 are formed in one subcell B.

(Processing device)
With reference to FIG. 7, the processing apparatus 100 used for forming the display medium 1 according to the embodiment of the present invention will be described. The processing device 100 is a general computer including a storage device 110, a processing control device 120, and an input / output interface 130. The processing apparatus 100 realizes the function shown in FIG. 7 by executing a processing program for a general computer to execute a predetermined processing.

The storage device 110 is a ROM (Read Only Memory), a RAM (Random access memory), a hard disk, or the like, and stores various data such as input data, output data, and intermediate data for the processing control device 120 to execute processing. do. The processing control device 120 is a CPU (Central Processing Unit) that reads and writes data stored in the storage device 110 and inputs / outputs data to / from the input / output interface 130 to execute processing in the processing device 100. do. The input / output interface 130 is an interface for connecting the processing control device 120 and an external device (not shown). In the embodiment of the present invention, the input / output interface 130 is a device that manufactures the display medium 1, a memory that is read by the device that manufactures the display medium 1, and the like.

The storage device 110 stores condition data 111, shape data 112, input color value data 113, and output color value data 114.

The condition data 111 is the data of the conditions necessary for the processing of the processing control device 120. Specifically, the condition data 111 includes the number of contents to be displayed on the display medium 1, the elevation angle, and the azimuth angle. The condition data 111 may include the color of the projecting member 3.

The shape data 112 is data relating to the shapes of the unit cell C, the subcell B, and the projecting member 3 formed on the display medium 1. The shape data 112 is, for example, the area ratio of each subcell B in the unit cell C of the display medium 1, the height of the projecting member 3, the spacing, the position, and the like. The shape data 112 is generated by the shape specifying unit 121.

The input color value data 113 is data of the color value of the content to be displayed on the display medium 1. The input color value data 113 stores the color value of each unit cell C of each content corresponding to a predetermined number of azimuth angles. The input color value data 113 holds the content to be displayed and the azimuth angle at which the content can be observed in association with each other. The input color value data 113 further holds the position of the subcell on the display medium 1 in association with the color value given to the subcell.

The output color value data 114 is data that associates a position on the display medium 1 with a color value to be colored at that position. The output color value data 114 is generated by the color value calculation unit 123.

The color values of the input color value data 113 and the output color value data 114 have a format in which the color given to the display medium 1 can be specified. The color value may be expressed by, for example, a color code or each RGB value.

The processing control device 120 includes a shape specifying unit 121, a shape output unit 122, a color value calculation unit 123, and a color value output unit 124.

The shape specifying unit 121 identifies the shape of the display medium 1 based on the conditions defined in the condition data 111, and generates the shape data 112. The shape specifying unit 121 refers to the amount of light shielded by the projecting member 3 and the light from the subcell B other than the predetermined subcell B or the direction other than the predetermined direction with respect to the light of the predetermined subcell B viewed from a predetermined azimuth angle. The area ratio of each subcell B and the shape of the projecting member 3 in the unit cell C are specified so that the amount and the standard deviation of the reflected luminance of each subcell B are small. Specifically, the shape of the projecting member 3 is the height, spacing, position, etc. of the projecting member 3.

The shape output unit 122 outputs the shape data 112 generated by the shape specifying unit 121 via the input / output interface 130.

The color value calculation unit 123 generates output color value data 114 from the shape data 112 output by the shape identification unit 121 and the input color value data 113. The color value calculation unit 123 stores a color value observable in a predetermined unit cell C (subcell B) when observing the display medium 1 from a predetermined elevation angle and azimuth angle, and a unit stored in the input color value data 113. The color value given to each subcell B of the unit cell C is calculated so that the difference from the color value at the position corresponding to the cell C is minimized.

For example, when the display medium 1 is formed by a UV printer, the processing apparatus 100 outputs the shape data 112 and the output color value data 114 to the UV printer.

The procedure for generating the display medium 1 is appropriately set. For example, in the case of forming by spraying ink with a UV printer, the ink or UV resin is sprayed according to the traveling direction of the jetting portion. Specifically, the ink of the color defined in the output color value data 114 is ejected to the position of the subcell B of the flat surface member 2, and the UV resin is ejected to the position of the projecting member 3. Alternatively, the protruding member 3 is formed after injecting ink of the color defined in the output color value data 114 at the position of the subcell of the flat member 2.

(Processing of shape specific part)
Next, a process in which the shape specifying unit 121 generates the shape data 112 will be described. In the embodiment of the present invention, the flat member 2 causes very strong specular reflection because it is formed of a metal having a high specular component. Therefore, the viewpoint direction and the light source direction can be related to specular reflection. Therefore, the relationship between the incident direction and the emitted direction can be uniquely obtained.

Here, the desired reflection function f for a certain direction ω0 is defined by the objective function of the equation (1).

Here, the color value is a value representing RGB, and in the case of 8 bits, it is a value of 256 gradations. More specifically, the individual values of RGB are [0,1], and the values are set in increments of 1/255.

Next, when displaying N contents on the display medium 1, the emission direction for confirming the kth content among the N contents and the color value of the position x are defined by the equation (2). ..

The reflection function in a predetermined direction can be expressed by the sum of the reflection functions of each content in a predetermined direction, and is defined by the equation (3).

Since the reflection function for a predetermined direction can be decomposed into a function indicating the reflection intensity with respect to the direction and a function indicating the color, it is defined by the equation (4). The function indicating the reflection intensity with respect to the direction is a function derived by the limitation of light by the projecting member 3. The color indicating function is a function derived from the color composition. In both cases, the range is [0,1].

As shown in FIG. 4 and the like, when observing from a predetermined azimuth angle, it is ideal that only the color of a predetermined subcell is observed and the color of other subcells is not observed, but it may be difficult. Therefore, the function indicating the reflection intensity with respect to the direction is calculated so that as much light as possible is reflected, the color in the specified direction is shown preferentially, and the same brightness can be shown from any direction. It is preferable to be done. Therefore, the evaluation function of Eq. (5) is defined.

The amount of shading of the subcell corresponding to the designated direction is defined by the equation (6). When the amount of shading of the subcell corresponding to the designated direction is low, it indicates that the amount of light of the subcell with respect to the designated direction is large, specifically, the color in the designated direction is seen preferentially.

The amount of light in the subcells other than the subcell corresponding to the designated direction is defined by the equation (7). When the amount of light in the subcells other than the subcell corresponding to the specified direction is small, it indicates that the amount of light that interferes with the amount of light in the subcell in the specified direction is small.

For example, as shown in FIG. 8A, it is assumed that the first projecting member L1 and the second projecting member L2 are formed in the first subcell B1 and the second subcell B2, respectively. At this time, when observing from a predetermined azimuth angle ω as shown in FIG. 8B, the color reflected by the first subcell B1 can be observed. However, light may be shielded by the first protruding member L1 or the like of the first subcell B1. Further, in the second subcell B2, a shielding portion B2a in which light is shielded by the second protruding member L2 and an exposed portion B2b which is not shielded are formed. Therefore, the shape specifying unit 121 needs to generate the shape data 112 so that the light of the desired subcell can be easily observed.

Amount of light in the first subcell B1 from the designated direction of the first subcell B1 so that the observer can easily observe the light in the first subcell B1 from the designated direction of the first subcell B1. It is preferable that the amount of shading of the first subcell B1 from the designated direction of the first subcell B1 is small. Similarly, the amount of light in the first subcell B1 from the designated direction of the second subcell B2 increases, and the amount of light shielding by the first subcell B1 from the designated direction of the first subcell B1 decreases. good.

Therefore, the formula (6) is the sum of the amount of shading of the first subcell B1 from the designated direction of the first subcell B1 and the amount of shading of the second subcell B2 from the designated direction of the second subcell B2. Is calculated.

Further, in order to make it easier for the observer to observe the light of the first subcell B1 from the designated direction of the first subcell B1, the first subcell is viewed from the designated direction of the first subcell B1. It is preferable that the amount of light in the second subcell B2, which is a subcell other than the above, is reduced. Similarly, when viewed from the designated direction of the second subcell B2, it is preferable that the amount of light in the first subcell B1 is reduced.

Therefore, in the formula (7), the amount of light from the second subcell B2 when viewed from the designated direction of the first subcell B1 and the first subcell when viewed from the designated direction of the second subcell B2. Calculate the total amount of light from B1.

Further, the standard deviation of the reflected luminance of all the subcells is defined by the equation (8). Equation (8) shows that when the standard deviation of the reflected luminance of all the subcells is low, the display medium 1 as a whole is displayed with the same luminance and is easier to see.

In the equation (5), the vector G is calculated so that the sum of the values obtained by applying a predetermined weight to each element specified by the equations (6) to (8) is minimized. The predetermined weight may be given in advance by the user or the like. The vector G is a vector in which the ratio of the area in one unit cell of the subcell, the height of the parallel projecting members, the spacing, and the position of the projecting members are variables. In other words, the formula (5) suppresses the shading of light in a desired direction and a desired subcell, suppresses the amount of light in a direction other than the desired direction or a subcell other than the desired subcell, and suppresses the reflected brightness of all the subcells. The optimum area ratio of the subcell B and the shape of the projecting member 3 are calculated so that the difference between the two is small.

As can be seen from the above formula, the size of each subcell B in the unit cell C is not uniform and is appropriately adjusted. Further, in the embodiment of the present invention, the case where the vector G is calculated by the equations (6) to (8) has been described, but only one of the equations (6) to (8) may be used, or any other equation (8) may be used. A calculation formula may be used.

In the embodiment of the present invention, (1) the amount of light from a predetermined subcell viewed from a predetermined azimuth is shielded by the projecting member, and (2) from a direction other than the predetermined direction or from a subcell other than the predetermined subcell. The vector G was calculated so that the total value of each element of (1) to (3) of the amount of light of (3) and the standard deviation of the reflected luminance of each subcell (3) was reduced by a predetermined weight. However, it is not limited to this. For example, even if the vector G is calculated so that the value of the evaluation function becomes small based on the evaluation function including any one or two elements of (1), (2) and (3) above. good. Further, in the evaluation function, the vector G may be calculated so that the value of the evaluation function is reduced based on the evaluation function in which a predetermined weight is applied to each element.

(Processing of color value calculation unit)
Next, the color value calculation unit 123 will explain the process of specifying the color of each subcell. The color value calculation unit 123 corresponds to a predetermined azimuth angle on the plane member 2 so as to form a color constituting a subcell B in which one of the predetermined number of contents is divided according to the position of the unit cell. The color of each subcell B to be used is determined. Here, the color of the subcell B is corrected in consideration of the colors of the surrounding subcells that can be recognized from a predetermined azimuth angle.

Specifically, the color of each subcell is obtained by the formula (2). Here, it is assumed that the protruding member 3 is black. Equation (2) can be expanded as in equation (9). Equation (9) determines the color of each subcell, which is an observable subcell from a predetermined azimuth and also considers the color of the subcell corresponding to this azimuth. This allows the observer to observe high quality content.

When the display medium 1 is observed, the desired brightness may not be obtained. Therefore, it is preferable to multiply the color value of the input image by the coefficient α to adjust the color value. By using the coefficient α, the equation (9) is expanded as in the equation (10), and the color of each subcell is specified by the equation (10).

The display medium 1 according to the embodiment of the present invention is suitable when it is desired to show different contents depending on the azimuth angle. The display medium 1 can, for example, display information according to the position of each observer to a plurality of observers who observe the display medium 1 from different directions.

(First modification)
In the embodiment of the present invention, the case where the coloring portion 4 and the protruding member 3 are provided on the flat surface member 2 to form the display medium 1 has been described, but the principle of the present invention described in the embodiment of the present invention can be used. , Can be realized in other embodiments.

As shown in FIG. 9, the first modification is a display support medium 11 in which a protruding member 3 described in an embodiment of the present invention is formed on a sheet-shaped member having a sheet shape and transmitting light. , Affixed to the display surface 13 of a general display device 12 that reflects light. The display device 12 displays an image in which the color of each subcell is determined according to the shapes of the unit cell C, the subcell B, and the projecting member 3 formed by the display support medium 11. In other words, the display device 12 electrically realizes the coloring unit 4 according to the embodiment of the present invention.

Thereby, different contents can be observed from each azimuth angle as in the embodiment of the present invention. The sheet-shaped member used for the display support medium 11 is preferably formed of a transparent member that transmits light, but is formed so that a part of light is transmitted within a range that does not affect the visibility of the observer. May be done. Here, the display device 12 is preferably a liquid crystal display, an organic EL display, or the like, and is a display that uses a bright backlight or a bright light emitting element.

Since the display device 12 can display an arbitrary image, it is possible to appropriately display an image according to an arbitrary condition. Further, by continuously changing the image by the display device 12, it is possible to observe different moving image contents from each azimuth angle.

Further, since the image displayed by the display device 12 corresponds to the subcell formed on the display support medium 11, the image is appropriately aligned so that the display support medium 11 is appropriately attached to the display surface 13.

In the first modification, the processing device 100a shown in FIG. 10 is used in order to appropriately generate the display support medium 11 and display an appropriate image on the display device 12. The processing device 100a according to the first modification is the same as the processing device 100 described with reference to FIG. 7, but the output destination of each data is different. The shape output unit 122 outputs the shape data 112 to a device for manufacturing the display support medium 11 or a memory read by the device for manufacturing the display support medium 11 via the input / output interface 130. Further, the color value output unit 124 outputs the output color value data 114 to the display device 12 to which the display support medium 11 is attached, a memory or the like that can be read by the display device 12.

The display support medium 11 according to the first modification is suitable when it is desired to display an arbitrary different image depending on the azimuth angle. The display support medium 11 displays, for example, information according to the position of each observer and other conditions to a plurality of observers who observe the display support medium 11 attached to the display device 12 from different directions. Is possible.

(Second modification)
In the embodiment of the present invention, the case where the projecting member 3 is a plate-shaped member as shown in FIG. 11A has been described, but the present invention is not limited to this. For example, as shown in FIG. 11B, it is formed in a U-shape in which plate-shaped members are connected. At this time, the portion connecting the plate-shaped members is arranged at the boundary of the unit cell C or the sub cell B.

(Third modification example)
In the embodiment of the present invention, the case where a predetermined content can be observed from a predetermined elevation angle and an azimuth angle has been described, but in the third modification, the predetermined content is determined by observing at an elevation angle different from the predetermined elevation angle. A case of displaying contents different from the predetermined number of contents observable at the elevation angle of the above will be described.

12 (a) and 12 (b) are examples of contents that can be seen from a predetermined elevation angle and azimuth angle. When the image I11 of FIG. 12A and the image I12 of FIG. 12B can be observed from a predetermined elevation angle and azimuth angle, when the elevation angle is set to 90 degrees (from directly above the display medium 1). , Image I13 in FIG. 12 (c) can be confirmed.

In this way, it is possible to color each subcell so that new content can be displayed by observing at an elevation angle different from a predetermined elevation angle.

(Fourth modification)
In the formulas (1) to (10) described in the embodiments of the present invention, the color of the projecting member 3 is assumed to be black, which easily shields light, but the color of the projecting member 3 can be arbitrarily set. It is also possible to do.

For example, in FIG. 3, when the projecting member 3 is other than black and shields light of a part of wavelength and transmits light of a part of wavelength, the ranges R1 and R2 in which the light transmitted through the projecting member 3 is incident. The light reflected by is a mixture of the color of the colored portion 4 of the flat member 2 and the color of the protruding member 3. For example, the observer recognizes the content displayed by the display medium 1 as the color filtered by the color of the projecting member 3 for the portions of the ranges R1 and R2.

When the color of the projecting member 3 is set to an arbitrary color other than black in this way, a part of the light is blocked and a part of the light is transmitted, and the color of the projecting member 3 affects the reflected color. give. In such a case, the color of each subcell is specified by the formula (11). It should be noted that the color of the destination that has passed through the projecting member 3 is defined to include not only one transmission or refraction but also the color of the destination that has been reflected by the flat member 2. Further, the color of the projecting member 3 may be changed for each subcell in which the projecting member 3 is installed.

Further, in the above calculation formula, the color of each subcell is set in consideration of not only the amount of light reflected by the subcell corresponding to the predetermined azimuth angle but also the amount of light reflected and observable by the surrounding subcells.

By setting the color of the projecting member 3 according to the color of the content to be shown in each unit cell in this way, it is possible to display a clearer image.

(Other embodiments)
As mentioned above, although described by embodiments of the invention and first to fourth variants, the statements and drawings that form part of this disclosure should not be understood to limit the invention. .. This disclosure reveals to those skilled in the art various alternative embodiments, examples and operational techniques.

For example, the processing device shown in FIGS. 7 and 10 may be configured by a plurality of hardware devices, or may be implemented by a computer that performs other processing.

It goes without saying that the present invention includes various embodiments not described here. Therefore, the technical scope of the present invention is defined only by the matters specifying the invention relating to the reasonable claims from the above description.

1 Display medium 2 Flat member 3 Protruding member 4 Coloring part 11 Display support medium 12 Display device 100 Processing device 110 Storage device 111 Condition data 112 Shape data 113 Input color value data 114 Output color value data 120 Processing control device 121 Shape identification unit 122 Shape output unit 123 Color value calculation unit 124 Color value output unit

Claims (10)

A display medium capable of displaying a predetermined number of contents corresponding to a predetermined number of azimuths from a predetermined elevation angle and azimuth angle.
A flat member that reflects light ,
The flat member is provided with a colored portion and is provided with a colored portion.
The plane member is divided into a plurality of unit cells, and the plane member is divided into a plurality of unit cells.
Each of the plurality of unit cells is divided into a predetermined number of subcells corresponding to the predetermined number of azimuths.
In each subcell corresponding to a predetermined azimuth, a projecting member having a light-shielding surface parallel to the predetermined azimuth on the plane member is formed perpendicular to the plane member.
From the predetermined azimuth in the subcell corresponding to the color given to the colored portion in the subcell corresponding to the predetermined azimuth and the azimuth other than the predetermined azimuth among the predetermined number of azimuths. Display content corresponding to the predetermined azimuth based on the color given to the colored portion in the observable exposed portion.
A display medium characterized by that. A display support medium that can be attached to a display surface having a plane that reflects light and can display a predetermined number of contents corresponding to a predetermined number of azimuths from a predetermined elevation angle and azimuth angle.
It has a sheet shape and is equipped with a sheet-like member that transmits light.
The sheet-shaped member is divided into a plurality of unit cells.
Each of the plurality of unit cells is divided into a predetermined number of subcells corresponding to the predetermined number of azimuths.
In each subcell corresponding to a predetermined azimuth, a projecting member having a surface that shields light and is parallel to the predetermined azimuth on the sheet-shaped member is formed perpendicular to the sheet-shaped member.
From the predetermined azimuth in the subcell corresponding to the color given to the display surface in the subcell corresponding to the predetermined azimuth and the azimuth other than the predetermined azimuth among the predetermined number of azimuths. Supports the display of content corresponding to the predetermined azimuth based on the color given to the display surface in the observable exposed portion.
A display support medium characterized by that. The area ratio of each subcell in the unit cell and the shape of the projecting member are formed so that the amount of light blocking by the projecting member is reduced with respect to the light of the predetermined subcell when viewed from a predetermined azimuth angle. The display support medium according to claim 2, which is characterized. The area ratio of each subcell in the unit cell and the shape of the projecting member are characterized in that they are formed so that the amount of light from a direction other than a predetermined direction or a subcell other than the predetermined subcell is reduced. The display support medium according to claim 2. The display support medium according to claim 2, wherein the area ratio of each subcell in the unit cell and the shape of the protruding member are formed so that the standard deviation of the reflected luminance of each subcell is small. .. The display support medium according to claim 2, wherein content different from the predetermined number of contents can be displayed by observing at an elevation angle different from the predetermined elevation angle. A processing apparatus used for manufacturing the display medium according to claim 1.
Storage that stores conditional data including the number of contents to be displayed on the display medium, elevation angle, and azimuth, and input color value data that stores the color value of each unit cell of each content corresponding to the predetermined number of azimuths. With the equipment
For the light of a given subcell as seen from a given azimuth, the amount of shading by the projecting member, the amount of light from a direction other than the given direction or a subcell other than the given subcell, or the standard deviation of the reflected brightness of each subcell. However, the area ratio of each subcell and the shape specifying part that specifies the shape of the projecting member are reduced so that the number is reduced.
Difference between the color value observable in the predetermined unit cell when observing the display medium from the predetermined elevation angle and azimuth angle and the color value at the position corresponding to the unit cell stored in the input color value data. A processing device including a color value calculation unit for calculating a color value assigned to each subcell of the unit cell so that the number of colors is reduced. A processing apparatus used for manufacturing the display support medium according to claim 2.
Conditional data including the number of contents, elevation angle and azimuth angle to be displayed by the display support medium, and
A storage device for storing input color value data for storing the color value of each unit cell of each content corresponding to the predetermined number of azimuths, and a storage device for storing the input color value data.
For the light of a given subcell as seen from a given azimuth, the amount of shading by the projecting member, the amount of light from a direction other than the given direction or a subcell other than the given subcell, or the standard deviation of the reflected brightness of each subcell. However, the processing apparatus is provided with a shape specifying portion that specifies the area ratio of each subcell and the shape of the projecting member so as to reduce the number. A processing device for calculating a color value of each position of the display surface corresponding to each subcell for displaying the predetermined number of contents on the display surface to which the display support medium according to claim 2 is attached.
A storage device that stores the color value of each unit cell of each content corresponding to the predetermined number of azimuths, and a storage device.
The unit cell of the color value observable in the predetermined unit cell when observing the display surface to which the display support medium is attached from the predetermined elevation angle and azimuth, and the content corresponding to the predetermined azimuth angle. It is characterized by having a color value calculation unit that calculates a color value given to each position of the display surface corresponding to each subcell of the unit cell so that the difference from the color value of the position corresponding to is minimized. Processing device. A processing program for operating a computer as the processing apparatus according to any one of claims 7 to 9.

Images