Processing device, program, and display medium

1. A processing device configured to produce a display medium enabling a predetermined number of contents corresponding to a predetermined number of azimuth angles to be displayed from a predetermined elevation angle and azimuth angle,

wherein the display medium comprises

a flat member that reflects light or a sheet-like member having a sheet-like form that transmits light,

the flat member or the sheet-like member being divided into a plurality of unit cells,

each of the plurality of unit cells being divided into a predetermined number of subcells corresponding to the predetermined number of azimuth angles,

projecting members having a light-blocking surface being formed perpendicular to the flat member or the sheet-like member on top of the flat member or sheet-like member and parallel to a predetermined azimuth angle in each subcell corresponding to the predetermined azimuth angle, and

the subcells including a plurality of microcells for expressing a color of a content, and wherein the processing device comprises

a shape specifying unit that specifies a size of each subcell or a shape of the projecting members in each subcell in a unit cell on the basis of a position of the microcells concealed by the projecting members in a case where the unit cell is observed from each of the predetermined number of azimuth angles.

2. The processing device according to claim 1 , wherein the shape specifying unit specifies the size of each subcell or the shape of the projecting members in each subcell using simulated annealing.

3. The processing device according to claim 1 , wherein the shape specifying unit specifies the size of each subcell or the shape of the projecting members in each subcell using a genetic algorithm.

4. The processing device according to claim 1 , wherein the shape specifying unit, after specifying the size of each subcell or the shape of the projecting members in each subcell, changes a weighting of evaluation items in the evaluation function used to specify the size of each subcell or the shape of the projecting members in each subcell so that an area of the microcells exposed with respect to the projecting members is equal to or greater than a specified value in the case where the unit cell is viewed from each of the predetermined number of azimuth angles.

5. A processing device configured to produce a display medium that determines a color of a display surface in the display medium enabling a predetermined number of contents corresponding to a predetermined number of azimuth angles to be displayed from a predetermined elevation angle and azimuth angle,

wherein the display medium comprises p 2 a flat member that reflects light or a sheet-like member having a sheet-like form that transmits light,

the flat member or the sheet-like member being divided into a plurality of unit cells,

each of the plurality of unit cells being divided into a predetermined number of subcells corresponding to the predetermined number of azimuth angles,

projecting members having a light-blocking surface being formed perpendicular to the flat member or sheet-like member on top of the flat member or sheet-like member and parallel to a predetermined azimuth angle in each subcell corresponding to the predetermined azimuth angle, and

the subcells including a plurality of microcells for expressing a color of athe content, and

wherein the processing device comprises

a storage device for storing the pixel values at the positions corresponding to the unit cells for each of the predetermined number of contents, and

a color specifying unit that calculates for each of the predetermined azimuth angles pixel values to be displayed on a basis of colors of viewable microcells in a case where a unit cell is viewed from a predetermined azimuth angle, and the differences in pixel values at positions corresponding to the unit cell in the content corresponding to each of the predetermined azimuth values, and

specifies the color of each microcell in the unit cell so that a sum of the differences calculated for each of the predetermined number of azimuth angles is smaller.

6. The processing device according to claim 5 , wherein the color specifying unit also groups adjacent microcells belonging to a predetermined subcell, corrects an average of values for each channel given to a grouping to values of channels for the microcells in the grouping, and notifies a printer used to print a colors of each microcells of the range of the grouping.

7. A display medium enabling a predetermined number of contents corresponding to a predetermined number of azimuth angles to be displayed from a predetermined elevation angle and azimuth angle,

wherein the display medium comprises

a flat member that reflects light or a sheet-like member having a sheet-like form that transmits light,

the flat member being divided into a plurality of unit cells,

each of the plurality of unit cells being divided into the predetermined number of subcells corresponding to a predetermined number of azimuth angles,

projecting members having a light-blocking surface being formed perpendicular to the flat member or the sheet-like member on top of the flat member or the sheet-like member and parallel to a predetermined azimuth angle in each subcell corresponding to the predetermined azimuth angle, and

the subcells including a plurality of microcells for expressing a color of a content, and

wherein a color of each microcell is set so that the content corresponding to each of the predetermined number of azimuth angles can be displayed on a basis of the color given to the microcells other than those concealed by the projecting members in a case where the unit cells are viewed from each of the predetermined number of azimuth angles.