Information presentation system, information presentation program, and information presentation method

Abstract

To provide manufacturing information for manufacturing a color-producing material for providing colors in consideration of color vision diversity.SOLUTION: In an information presentation system 1, a color conversion system comprises: an acquisition unit that acquires information about a reference spectrum of a reference color-producing material that serves as a reference; a response calculation unit that, on the basis of the reference spectrum, calculates a matching spectrum for causing a response in a subject that coincides with or approximates a response from the color vision system of a reference color vision person who has visually recognized the reference color-producing material; and a memory that stores information about a plurality of raw material spectra corresponding respectively to a plurality of raw material color-producing materials to be mixed, and a material selection system comprises: a selection unit that uses information about the matching spectrum and the information about the plurality of raw material spectra to select, from among the plurality of raw material color-producing materials, a plurality of mixed materials that emit a spectrum that coincides with or approximates the matching spectrum when mixed; and a presentation unit that presents information for identifying the plurality of mixed materials.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] One aspect of the present disclosure relates to an information presentation system, an information presentation program, and an information presentation method. [Background technology]

[0002] Color processing that takes color-blind people into consideration has been known for some time. For example, a color processing device described in Patent Document 1 acquires color values ​​to be processed, calculates a color vision degree coefficient that represents the degree of color vision deficiency based on the population distribution of test results obtained from a color vision test administered to a predetermined group, calculates color conversion coefficients used to convert the acquired color values ​​based on the correspondence between the color vision degree coefficients and the sensitivity characteristics of L-, M-, and S-cones, and performs color conversion processing on the color values ​​using the color conversion coefficients. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5924289 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a need for a system that provides manufacturing information when manufacturing color-developing materials that provide colors taking color vision diversity into consideration. [Means for solving the problem]

[0005] An information presentation system according to one aspect of the present disclosure includes an acquisition unit that acquires information on a reference spectrum of a reference color-producing material that serves as a reference, and calculates a reference response, which is the response of each cone of a reference color vision subject, based on the reference spectrum and a reference model that indicates the sensitivity characteristics of each cone of the reference color vision subject, changes the reference spectrum to repeatedly generate candidate spectra, calculates a subject response, which is the response of each cone of the subject, based on the candidate spectrum and a subject model that indicates the sensitivity characteristics of each cone of the subject, searches for candidate spectra where the subject response matches or is close to the reference response, identifies a converted spectrum, and combines the reference spectrum and the converted spectrum to match or be close to the response from the color vision system of the reference color vision subject who viewed the reference color-producing material. a storage unit for storing information on a plurality of raw material spectra corresponding to each of a plurality of raw material color-producing materials to be mixed; a selection unit for repeatedly obtaining any plurality of raw material spectra from the plurality of raw material spectra stored in the storage unit and superimposing the any plurality of raw material spectra using weighting to calculate a superimposed spectrum, and selecting, as a plurality of mixed materials, a plurality of raw material color-producing materials corresponding to each of the any plurality of raw material spectra used in calculating the superimposed spectrum when the superimposed spectrum matches or is approximate to the corresponding spectrum; and a presentation unit for presenting information specifying the types of raw material color-producing materials as the plurality of mixed materials.

[0006] An information presentation program according to one aspect of the present disclosure includes, on a computer, an acquisition step of acquiring information on a reference spectrum of a reference color-producing material that serves as a reference; calculating a reference response, which is the response of each cone of a reference color vision subject, based on the reference spectrum and a reference model that indicates the sensitivity characteristics of each cone of the reference color vision subject; changing the reference spectrum to repeatedly generate candidate spectra; calculating a subject response, which is the response of each cone of the subject, based on the candidate spectrum and a subject model that indicates the sensitivity characteristics of each cone of the subject; searching for candidate spectra in which the subject response matches or approximates the reference response, and identifying a converted spectrum; and combining the reference spectrum and the converted spectrum to identify a converted spectrum that matches or approximates the response from the color vision system of the reference color vision subject who viewed the reference color-producing material. a storage step of storing information on a plurality of raw material spectra corresponding to each of a plurality of raw material color-producing materials to be mixed; a selection step of repeatedly obtaining a plurality of arbitrary raw material spectra from the plurality of raw material spectra stored in the storage step, superimposing the arbitrary plurality of raw material spectra using weighting to calculate a superimposed spectrum, and selecting, as a plurality of mixed materials, a plurality of raw material color-producing materials corresponding to each of the arbitrary plurality of raw material spectra used in calculating the superimposed spectrum when the superimposed spectrum matches or is approximate to the corresponding spectrum; and a presentation step of presenting information specifying the types of raw material color-producing materials as the plurality of mixed materials.

[0007] An information presentation method according to one aspect of the present disclosure includes an acquisition step of acquiring information on a reference spectrum of a reference color-producing material that serves as a reference; calculating a reference response, which is the response of each cone of a reference color vision subject, based on the reference spectrum and a reference model that indicates the sensitivity characteristics of each cone of the reference color vision subject; changing the reference spectrum to repeatedly generate candidate spectra; calculating a subject response, which is the response of each cone of the subject, based on the candidate spectrum and a subject model that indicates the sensitivity characteristics of each cone of the subject; searching for candidate spectra in which the subject response matches or is close to the reference response, to identify a converted spectrum; and combining the reference spectrum and the converted spectrum to obtain a response that matches or is close to the response from the color vision system of the reference color vision subject who viewed the reference color-producing material. The method includes a calculation step of calculating a corresponding spectrum to be generated in the subject, a storage step of storing information on a plurality of raw material spectra corresponding to each of a plurality of raw material color-producing materials to be mixed, a selection step of repeatedly obtaining any plurality of raw material spectra from the plurality of raw material spectra stored in the storage step and superimposing the any plurality of raw material spectra using weighting to calculate a superimposed spectrum, and selecting, as a plurality of mixed materials, a plurality of raw material color-producing materials corresponding to each of the any plurality of raw material spectra used in calculating the superimposed spectrum when the superimposed spectrum matches or is approximate to the corresponding spectrum, and a presentation step of presenting information identifying the types of raw material color-producing materials as the plurality of mixed materials.

[0008] In these aspects, a corresponding spectrum that allows a subject to perceive the color of a reference color-producing material in the same way as a reference color vision person is calculated, and based on this corresponding spectrum, a plurality of mixed materials that realize a material emitting a spectrum that matches or is close to the corresponding spectrum can be selected from a plurality of raw color-producing materials, and information on these mixed materials is presented. This makes it possible to provide manufacturing information when manufacturing a color-producing material that provides colors taking color vision diversity into consideration. [Effects of the Invention]

[0009] According to one aspect of the present disclosure, it is possible to provide manufacturing information when manufacturing a color-forming material for providing a color in consideration of color vision diversity. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram illustrating an example of a functional configuration of an information presentation system. [Figure 2] FIG. 2 is a graph showing an example of sensitivity characteristics of L cones, M cones, and S cones. [Figure 3] FIG. 3 is a diagram showing the relationship between the reference spectrum and the corresponding spectrum. [Figure 4] FIG. 4 is a flowchart showing an example of the operation of the color generation system. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements are designated by the same reference numerals, and redundant description will be omitted. [System Overview]

[0012] The information presentation system according to the present disclosure is a computer system or control system that provides manufacturing information for manufacturing a color-forming material for providing colors taking into account color vision diversity. Color vision diversity refers to situations in which people differ in their perception or discrimination of colors. The information presentation system can be used to foster a common understanding of colors among people with different color vision, and to promote mutual understanding regarding color recognition or discrimination. The color-forming material is a material that produces colors with various spectral distributions in the visible range, such as dyes, dyes, pigments, and illuminants.

[0013] There are five types of color vision: C-type (Common), P-type (Protanope), D-type (Deuteranope), T-type (Tritanope), and A-type (Acromatic).

[0014] Type C is a group with three types of cones: L cones, M cones, and S cones. L cones are photoreceptor cells that are highly sensitive to light in the long wavelength range, such as red. M cones are photoreceptor cells that are highly sensitive to light in the medium wavelength range, such as green. S cones are photoreceptor cells that are highly sensitive to light in the short wavelength range, such as blue. In the case of Japanese people, 95% of men and 99% of women belong to type C. Type C people are also said to have general color vision.

[0015] On the other hand, people with P, D, T, and A types are also called colorblind. P types are a group consisting of P-type strong (protanopia) who do not have L cones and P-type weak (protanomaly) who have a shift in L cone sensitivity similar to that of M cones. D types are a group consisting of D-type strong (deuteranopia) who do not have M cones and D-type weak (deuteranomaly) who have a shift in M ​​cone sensitivity similar to that of L cones. T types are a group that do not have S cones. A types are a group that have only one type of cone or no cones at all. P and D types account for the majority of colorblind people, with T and A types accounting for an extremely small proportion.

[0016] As an example of promoting common recognition or mutual understanding as described above, the information presentation system may be used to produce color-forming materials that allow color-blind individuals to experience colors perceived by those with normal color vision, or vice versa. Alternatively, the information presentation system may be used to produce color-forming materials that provide colors that are perceived the same by both those with normal color vision and those with color-blindness. The information presentation system may also be used to produce color-forming materials that promote common recognition or mutual understanding of colors among C-, P-, D-, T-, and A-type people.

[0017] The information presentation system generates a corresponding color, which is another color that takes color vision diversity into consideration, based on a reference color of a reference color-producing material that serves as a reference, and presents information for manufacturing a color-producing material that provides the corresponding color. The reference color is a color specified for generating the corresponding color. It can be said that the corresponding color is a color that corresponds to the reference color. In one example, the information presentation system generates a corresponding spectrum, which is a spectrum of the corresponding color, based on a reference spectrum, which is a spectrum of the reference color. [System Configuration]

[0018] The information presentation system is composed of one or more computers. In this embodiment, the information presentation system 1 is composed of one computer, a color conversion system 10, and one computer, a material selection system 20. However, the information presentation system 1 may include three or more computers, or may be composed of only one computer. When multiple computers are used, these computers are connected via a communication network such as the Internet or an intranet to logically construct a single information presentation system.

[0019] A computer constituting an information presentation system generally includes hardware devices such as a processor, memory, a communication interface, an input device, and an output device. Examples of processors include a CPU and a GPU. Memory can be configured using flash memory, a hard disk, etc. The communication interface can be configured using a network card or a wireless communication module. Examples of input devices include a keyboard, a pointing device, a touch panel, a microphone, a sensor, and a camera. Examples of output devices include a monitor, a touch panel, a head-mounted display (HMD), and a speaker.

[0020] The information presentation program for causing a computer to function as an information presentation system includes program code for implementing each functional module of the information presentation system. This information presentation program may be provided by being non-temporarily recorded on a tangible recording medium, such as a CD-ROM, a DVD-ROM, or a semiconductor memory. Alternatively, the information presentation program may be provided via a communication network as a data signal superimposed on a carrier wave. The provided information presentation program is recorded in, for example, a memory.

[0021] The configuration of an information presentation system 1 according to an example will be described with reference to Fig. 1. Fig. 1 is a diagram showing the functional configuration of the information presentation system 1. The information presentation system 1 includes a color conversion system 10 and a material selection system 20.

[0022] The color conversion system 10 is a computer system that generates a corresponding spectrum based on a reference spectrum. The color conversion system 10 may be composed of a single computer or multiple computers connected to each other via a communication network. The color conversion system 10 includes a processor 101 and a memory 102. In one example, the processor 101 functions as an acquisition unit 11, a response calculation unit 12, a spectrum calculation unit 13, and a generation unit 14. The memory 102 pre-stores a predetermined reference model, which is data representing the color vision system of a reference color vision person. At least one of a normal color vision person and a color-blind person is assumed as the reference color vision person. Reference models may be prepared separately for normal color vision people and color-blind people. When a color-blind person is assumed as the reference color vision person, a reference model may be prepared for each type of color vision; for example, a P-type reference model and a D-type reference model may be prepared.

[0023] The acquisition unit 11 is a functional module that acquires input data (information) indicating a reference spectrum, a subject model, and a consideration ratio. The subject model is data indicating the color vision system of the subject. The reference spectrum is a spectrum related to a reference color emitted by a reference color-producing material. The subject is a person who is assumed to be the target for whom the corresponding color is provided. The subject may have normal color vision or may be a specific type of color blind person such as P-type or D-type. The consideration ratio is an index that indicates the degree of change from the reference color to the corresponding color.

[0024] The response calculation unit 12 is a functional module that calculates the response from the color vision system of a person who sees the reference color as a reference response. The response calculation unit 12 calculates the reference response based on the reference spectrum and the reference model. The response corresponds to the electrical signals transmitted from the L-, M-, and S-cones to the brain through the optic nerve.

[0025] The spectrum calculation unit 13 is a functional module that calculates a transformation spectrum for outputting a response from the subject model that matches or approximates the reference response. A "response that matches or approximates the reference response" refers to a response whose difference from the reference response is equal to or less than a predetermined threshold.

[0026] The generator 14 is a functional module that generates a corresponding spectrum based on at least the transformed spectrum. In one example, the generator 14 generates the corresponding spectrum based on the reference spectrum, the transformed spectrum, and the consideration ratio. The corresponding spectrum is a spectrum that causes a response in the subject that matches or approximates the reference response of a reference color vision person who views the reference color-producing material.

[0027] The response calculation unit 12, spectrum calculation unit 13, and generation unit 14 correspond to a calculation unit that calculates a corresponding spectrum based on a reference spectrum.

[0028] The material selection system 20 is a computer system that presents information on multiple mixed materials that are used to manufacture a color-producing material that provides a corresponding color based on the corresponding spectrum. The material selection system 20 is composed of a single computer or multiple computers connected to each other via a communication network. The material selection system 20 includes a processor 201 and a memory 202. In one example, the processor 201 functions as a selection unit 21 and a presentation unit 22. The memory 202 pre-stores data indicating multiple raw material spectra, which are the color-producing characteristics corresponding to each of the multiple raw material color-producing materials to be mixed, and data on multiple absorption spectra, which are the color absorption characteristics corresponding to each of the multiple wavelength-absorbing materials to be mixed. The raw material color-producing materials are materials that are used as raw materials for the color-producing material, such as dyes, dyes, pigments, fluorescent materials, and phosphorescent materials. Examples of raw material color-producing materials include azo dyes. The wavelength-absorbing material is a material that absorbs specific wavelengths when mixed with the raw material color-producing material.

[0029] The color-emitting material made from a plurality of mixed materials may be a light-emitting body. A light-emitting body is a component that emits light when excited by excitation energy (electrical energy, chemical energy, light energy, etc.). The light-emitting body is a component manufactured to contain a plurality of mixed materials selected from a plurality of mixed materials at a plurality of mixing ratios based on information presented by the material selection system 20. Phosphors of each color, which are a plurality of mixed materials prepared to manufacture the light-emitting body, can be manufactured, for example, by the method disclosed as Example 1 in Japanese Patent Laid-Open Publication No. 2009-161372. The quantum dots (quantum dot phosphors) disclosed in this document have a sharp emission spectrum with a full width at half maximum (FWHM) of approximately 30 nm. The light-emitting body manufactured in this manner has a corresponding spectrum based on a reference spectrum and contributes to color expression that takes color vision diversity into consideration.

[0030] Illuminants as color-emitting materials may be used to manufacture various articles. Illuminants may be made from fluorescent or phosphorescent materials. Illuminants may be used, for example, in displays, traffic lights, lighting, wavelength conversion films, backlights, indicators, luminescent dyes, luminescent paints, or luminescent inks. Articles using illuminants can help people with normal color vision and people with color blindness to have a common understanding of color and promote mutual understanding regarding color recognition or discrimination. It can also provide people with color blindness with the opportunity to enjoy using articles in the same way as people with normal color vision. Alternatively, articles using illuminants can be expected to give color blind people confidence in their color selection and reduce errors in color selection.

[0031] In one example, the raw material spectrum is represented by the reflectance (%) at each wavelength (nm) in the visible light range. The raw material spectrum may be represented by a spectral function that indicates the relationship between wavelength and reflectance. In one example, the absorption spectrum is represented by the absorbance at each wavelength (nm) in the visible light range. The absorption spectrum may be represented by a spectral function that indicates the relationship between wavelength and absorbance.

[0032] The selection unit 21 selects a plurality of mixed materials from a plurality of raw color-producing materials and a plurality of wavelength-absorbing materials using the corresponding spectrum data, a plurality of raw material spectrum data, and a plurality of absorption spectrum data, and at this time, the selection unit 21 also calculates the mixing ratio of the plurality of mixed materials.

[0033] The presentation unit 22 presents information on the multiple mixed materials selected by the selection unit 21 and information on their mixing ratios calculated by the selection unit 21. For example, the presentation unit 22 presents one mixed material "Mixed Material A" in association with its mixing ratio "Ratio A," and presents another mixed material "Mixed Material B" in association with its mixing ratio "Ratio B." The presentation of information by the presentation unit 22 may be performed using an output device of a computer constituting the material selection system 20, or may be performed by transmitting the information from the computer constituting the material selection system 20 to an external device via a communication interface. [Color vision model]

[0034] Both the reference model and the subject model can be considered color vision models that represent the human color vision system. In one example, the color vision model shows the sensitivity characteristics of the L, M, and S cones. The sensitivity characteristics are also called spectral characteristics. Figure 2 is a graph showing examples of the sensitivity characteristics of each cone for a person with normal color vision and a person with color deficiency. The horizontal and vertical axes of the graph represent wavelength (nm) and relative sensitivity, respectively. The color-blind person shown in Figure 2 corresponds to P-type color deficiency. The sensitivity characteristics of the M and L cones in this person overlap to a greater extent than those of a person with normal color vision (C-type). These differences in sensitivity characteristics result in differences in color recognition or discrimination. [Spectrum]

[0035] 3 is a graph showing an example of a reference spectrum processed by color conversion system 10 and a corresponding corresponding spectrum generated therefrom. The horizontal and vertical axes of the graph represent wavelength (nm) and reflectance (%), respectively. In this example, a spectrum of a person with normal color vision is used as the reference model, and data of a person with P-type color blindness is used as the subject model, and the corresponding spectrum is generated with a consideration rate of 100%. When a spectrum with a peak at approximately 600 nm is processed as reference spectrum 301, a spectrum with a bottom at approximately 510 nm and flat characteristics in the wavelength range of 630 nm or higher is generated as corresponding spectrum 302. [System Operation]

[0036] An information presentation method executed by the information presentation system 1 will be described with reference to Fig. 4. Fig. 4 is a flowchart showing an example of the operation of the information presentation system 1 as a processing flow S1.

[0037] In step S11, the acquisition unit 11 acquires a reference spectrum, a subject model, and a consideration ratio. In one example, a user of the color conversion system 10 inputs a reference color of a reference color-producing material, a subject's color vision type, and a consideration ratio. The acquisition unit 11 accepts the input and reads out a reference spectrum corresponding to the reference color and a subject model corresponding to the color vision type from a predetermined storage device. Alternatively, the acquisition unit 11 may accept input of the reference spectrum, the subject model, and the consideration ratio. Alternatively, the acquisition unit 11 may receive these data from another computer.

[0038] In one example, the reference spectrum is represented by the reflectance (%) at each wavelength (nm) in the visible light range. The reference spectrum may be expressed as a spectral function that indicates the relationship between wavelength and reflectance.

[0039] In one example, the subject model represents the sensitivity characteristics of each of the L cones, M cones, and S cones as shown in FIG. 2. The subject model may be expressed by a sensitivity function that indicates the relationship between wavelength and relative sensitivity. This sensitivity function may be prepared for each of the L cones, M cones, and S cones. As described above, the subject model represents the color vision system (color vision model) of either a person with normal color vision or a person with color deficiency.

[0040] In one example, the consideration ratio is expressed by a number greater than 0% and less than or equal to 100%. When the consideration ratio is 0%, the corresponding color is the same as the reference color. When the consideration ratio is 100%, the color perceived by the subject who views the corresponding color matches or is close to the color perceived by the reference color vision person who views the reference color. In other words, when the consideration ratio is 100%, the subject can experience through the corresponding color the situation in which the reference color vision person sees the reference color. When the consideration ratio is within a specific number or range of numbers, the colors perceived by both the subject and the reference color vision person who view the corresponding color can match or nearly match. Such a consideration ratio can be, for example, 20% or a value close to it.

[0041] In one example, the acquisition unit 11 changes at least a part of the reference spectrum without changing the RGB of the reference color. The acquisition unit 11 may acquire the changed spectrum as the final reference spectrum. Correspondingly, the acquisition unit 11 may update the consideration ratio in consideration of the degree of the change and acquire the updated consideration ratio as the final consideration ratio.

[0042] In step S12, the response calculation unit 12 calculates a reference response based on the reference spectrum and the reference model. The reference response may be defined by a response α from an L cone, a response β from an M cone, and a response γ from an S cone, and in the present disclosure, this reference response is expressed as (α, β, γ).

[0043] In one example, the response calculation unit 12 calculates the response from each of the L cones, M cones, and S cones of the reference color vision subject when the cones sense a reference color as follows: The response calculation unit 12 calculates the product of the relative sensitivity of the cone and the reflectance shown in the reference spectrum at each wavelength in the visible light range. This product can be said to indicate the degree of excitation. The response calculation unit 12 calculates the sum of the products at each wavelength as the response from the cone.

[0044] Let the wavelength be represented by x, and let the sensitivity functions of the L, M, and S cones be f L (x),f M (x),f S Let (x) be the spectral function of the reference color, and g(x) be the spectral function of the reference color. In this case, the responses α, β, and γ can be expressed as equations (1) to (3), respectively. α=∫f L (x)g(x)dx …(1) β=∫f M (x)g(x)dx …(2) γ=∫f S (x)g(x)dx …(3)

[0045] That is, the response calculation section 12 can calculate the integral of the product of the sensitivity function and the spectral function for each cone as the reference response (α, β, γ).

[0046] In step S13, the spectrum calculation unit 13 calculates a transformed spectrum based on the reference spectrum, the subject model, and the reference response. In one example, the spectrum calculation unit 13 generates a candidate spectrum by modifying at least a portion of the reference spectrum. Then, the spectrum calculation unit 13 inputs the candidate spectrum into the subject model and calculates a response from the color vision system of the subject who visually recognizes the color indicated by the candidate spectrum as the subject response (α', β', γ'). The spectrum calculation unit 13 determines whether the subject response (α', β', γ') matches or is close to the reference response (α, β, γ). While modifying at least a portion of the reference spectrum, the spectrum calculation unit 13 searches for a subject response (α', β', γ') that matches or is close to the reference response (α, β, γ), and finally identifies the transformed spectrum. The transformed spectrum can also be said to be the corresponding color when the consideration rate is 100%.

[0047] In step S14, the generation unit 14 generates a corresponding spectrum based on the reference spectrum, the transformed spectrum, and the consideration ratio. In one example, the generation unit 14 generates a corresponding spectrum by combining the reference spectrum and the transformed spectrum using a linear combination based on the consideration ratio. The reference spectrum, the transformed spectrum, and the consideration ratio are respectively denoted as S d ,S v , r, the corresponding spectrum S c is expressed by equation (4), where r is greater than 0 and equal to or less than 1. When r=1, that is, when the consideration rate is 100%, the generation unit 14 sets the converted spectrum as the corresponding spectrum as it is. S c =(1-r) S d +r·S v …(4)

[0048] In step S15, the selection unit 21 acquires mixed material information on a plurality of mixed materials for producing a color-producing material having a color corresponding to the corresponding spectrum. In one example, the selection unit 21 refers to the corresponding spectrum, a plurality of raw material spectra corresponding to a plurality of raw color-producing materials, and a plurality of absorption spectra corresponding to a plurality of wavelength-absorbing materials, and selects a plurality of mixed materials for producing a color-producing material by mixing them from a plurality of raw color-producing materials and a plurality of wavelength-absorbing materials assumed in advance.

[0049] More specifically, the selection unit 21 weights and superimposes any number of raw material spectra from the plurality of raw material spectra with any number of absorption spectra from the plurality of absorption spectra to calculate a superimposed spectrum, and determines whether the superimposed spectrum matches or approximates the corresponding spectrum. If the selection unit 21 determines that the superimposed spectrum matches or approximates the corresponding spectrum, it selects raw color-producing materials and wavelength-absorbing materials corresponding to each of the plurality of spectra that were used to superimpose the superimposed spectrum as multiple mixed materials. Furthermore, the selection unit uses the weighting of each spectrum used in calculating the superimposed spectrum to determine the mixing ratio of the mixed material corresponding to each spectrum. In this way, the selection unit 21 acquires information on the multiple mixed materials and information on the corresponding mixing ratios as mixed material information.

[0050] In step S16, the presentation unit 22 presents the mixed material information acquired by the selection unit 21. As an example, the presentation unit 22 presents one mixed material "mixed material A" and its mixing ratio "ratio A" in association with each other, and also presents another mixed material "mixed material B" and its mixing ratio "ratio B" in association with each other.

[0051] According to the information presentation system 1 described above, a corresponding spectrum that allows a subject to perceive the color of a reference color-producing material in the same way as a reference color vision person is calculated, and based on this corresponding spectrum, multiple mixed materials that realize a material that emits a spectrum that matches or is close to the corresponding spectrum can be selected from multiple raw color-producing materials, and information on these multiple mixed materials can be presented. This makes it possible to provide manufacturing information when manufacturing color-producing materials that provide colors taking color vision diversity into consideration.

[0052] Furthermore, multiple mixed materials that realize a material that emits a spectrum that matches or is close to the corresponding spectrum can be selected from wavelength absorbing materials in addition to multiple raw color-producing materials, and information on these multiple mixed materials is presented. This increases the flexibility of manufacturing information when manufacturing color-producing materials that provide colors taking color vision diversity into consideration.

[0053] Furthermore, by using the consideration ratio, it is possible to calculate a desired corresponding spectrum, which in turn makes it possible to provide, for example, manufacturing information for a color-producing material that is recognized in the same way by both people with normal color vision and people with color-blindness.

[0054] In addition, information regarding the mixing ratio of multiple mixed materials when manufacturing a material that emits a spectrum that matches or is close to the corresponding spectrum is also presented, making it possible to provide accurate manufacturing information when manufacturing a color-producing material that provides colors taking color vision diversity into consideration. [Variations]

[0055] The technology according to the present disclosure has been described in detail above based on various examples. However, the present disclosure is not limited to the above examples. Various modifications can be made to the technology according to the present disclosure without departing from the spirit of the present disclosure.

[0056] In the above example, the color conversion system 10 generates a corresponding spectrum based on the consideration ratio. However, if the color conversion system 10 sets the converted spectrum as the corresponding spectrum as is, i.e., if the color conversion system 10 generates a corresponding spectrum with a consideration ratio of 100%, the color conversion system 10 does not need to acquire or use the consideration ratio.

[0057] The processing steps of the method executed by at least one processor are not limited to the above examples. For example, some of the above steps may be omitted, or the steps may be executed in a different order. Furthermore, any two or more of the above steps may be combined, or some of the steps may be modified or deleted. Alternatively, other steps may be executed in addition to the above steps.

[0058] In the present disclosure, when comparing the magnitude of two numerical values, either of the two criteria "greater than or equal to" and "greater than" may be used, or either of the two criteria "less than or equal to" and "less than" may be used.

[0059] In this disclosure, the expression "at least one processor executes a first process, executes a second process, ... executes an nth process" or a corresponding expression indicates a concept including a case where the entity executing the n processes from the first process to the nth process, i.e., the processor, changes midway through. In other words, this expression indicates a concept including both a case where all n processes are executed by the same processor and a case where the processor changes among the n processes according to an arbitrary policy.

[0060] Articles in which the color-forming material according to the present disclosure can be used are classified into various categories. The categories include, for example, food, clothing, and shelter, clothing / fashion, school / children, brand / advertising, toys, and others. Specific examples of articles included in these categories are as follows: Articles related to food, clothing, and shelter include, for example, clothing, food containing coloring agents, tableware, tablecloths, wallpaper, furniture, and bedding. Articles related to food, clothing, and shelter may also be combinations of wallpaper, furniture, bedding, and lighting. Examples of clothing / fashion-related items include umbrellas, hats, hairpins, hair ties, headbands, hair bands, glasses, sunglasses, earrings, pierced earrings, earphones, cosmetics, nail art items (nail polish, gel, stickers, etc.), necklaces, ties, scarves, mufflers, shawls, tie pins, inner tops, outer tops, inner bottoms, outer bottoms, gloves, wristbands, bracelets, watches, smart watches, rings, smartphone cases, bags, belts, socks, leggings, tights, stockings, anklets, shoes, sandals, geta (wooden clogs), slippers, fans, folding fans, handkerchiefs, towels, etc. Examples of school / children-related items include stationery, notebooks, letter sets, tool cases, school bags, textbooks / teaching materials, uniforms, gym clothes, indoor shoes, paint sets, lunch boxes, crayons, sticky notes, files, binders, etc. Examples of brand / advertising related items include items with logos, signs, advertising items, and packaging (drinks, sweets, book covers, CD jackets). Examples of toy related items include stuffed toys / dolls, play kitchen supplies, and clay. Other items include candles, soap, and business cards. As such, the items disclosed herein are diverse, and each category includes specific items. This makes it possible to accommodate a variety of uses or situations. [Note]

[0061] As can be seen from the various examples above, the present disclosure includes the following aspects. (Appendix 1) an acquisition unit that acquires information on the reference spectrum of a reference color-producing material; a calculation unit that calculates, based on the reference spectrum, a corresponding spectrum for generating in a subject a response that matches or approximates a response from the color vision system of a reference color vision person who visually recognizes the reference color-producing material; a storage unit for storing information on a plurality of raw material spectra corresponding to a plurality of raw material color-forming materials to be mixed; a selection unit that uses information on the corresponding spectrum and information on the plurality of raw material spectra to select, from the plurality of raw material color-producing materials, a plurality of mixed materials that emit a spectrum that matches or is close to the corresponding spectrum when mixed; a presentation unit that presents information that identifies the plurality of mixed materials; An information presentation system comprising: (Appendix 2) the storage unit further stores information on absorption spectra, which are absorption characteristics of colors corresponding to one or more wavelength absorbing materials to be mixed; the selection unit further uses information on the absorption spectrum to select the plurality of mixed materials from the plurality of raw color-producing materials and the one or more wavelength-absorbing materials. 10. The information presentation system according to claim 1. (Appendix 3) the acquisition unit further acquires a consideration ratio indicating a degree of change from the reference spectrum to the corresponding spectrum; the calculation unit calculates the corresponding spectrum based on the reference spectrum and the consideration ratio; 3. An information presentation system according to claim 1 or 2. (Appendix 4) the selection unit calculates a mixing ratio of the plurality of mixed materials that, when mixed, emit a spectrum that matches or is close to the corresponding spectrum; The presentation unit further presents information about the mixing ratio. An information presentation system according to any one of appendices 1 to 3. (Appendix 5) On the computer, an acquisition step of acquiring reference spectrum information of a reference color-producing material; a calculation step of calculating a corresponding spectrum based on the reference spectrum, for producing a response in a subject that matches or approximates a response from the color vision system of a reference color vision person who visually recognizes the reference color-producing material; a storage step for storing information on a plurality of raw material spectra corresponding to each of a plurality of raw material color-forming materials to be mixed; a selection step of selecting, from among the plurality of raw color-producing materials, a plurality of mixed materials that emit a spectrum that matches or is close to the corresponding spectrum when mixed, using information on the corresponding spectrum and information on the plurality of raw material spectra; a presentation step of presenting information identifying the plurality of mixed materials; An information presentation program that executes the above. (Appendix 6) an acquisition step of acquiring reference spectrum information of a reference color-producing material; a calculation step of calculating a corresponding spectrum based on the reference spectrum, for producing a response in a subject that matches or approximates a response from the color vision system of a reference color vision person who visually recognizes the reference color-producing material; a storage step for storing information on a plurality of raw material spectra corresponding to each of a plurality of raw material color-forming materials to be mixed; a selection step of selecting, from among the plurality of raw color-producing materials, a plurality of mixed materials that emit a spectrum that matches or is close to the corresponding spectrum when mixed, using information on the corresponding spectrum and information on the plurality of raw material spectra; a presentation step of presenting information identifying the plurality of mixed materials; An information presentation method comprising:

[0062] According to Supplements 1, 5, and 6, a corresponding spectrum that allows a subject to perceive the color of a reference color-producing material in the same way as a reference color vision person is calculated, and based on this corresponding spectrum, multiple mixed materials that realize a material that emits a spectrum that matches or is close to the corresponding spectrum can be selected from multiple raw color-producing materials, and information on these multiple mixed materials is presented. This makes it possible to provide manufacturing information when manufacturing color-producing materials that provide colors taking color vision diversity into consideration.

[0063] According to Supplementary Note 2, multiple mixed materials that realize a material that emits a spectrum that matches or is close to the corresponding spectrum can be selected from wavelength absorbing materials in addition to multiple raw color-producing materials, and information on these multiple mixed materials is presented. This increases the flexibility of manufacturing information when manufacturing color-producing materials that provide colors taking color vision diversity into consideration.

[0064] According to Supplementary Note 3, a desired corresponding spectrum can be calculated by using the consideration ratio. As a result, it is possible to provide, for example, manufacturing information for a color-producing material that can be recognized in the same way by both people with normal color vision and people with color deficiency.

[0065] According to Appendix 4, information on the mixing ratio of multiple mixed materials when manufacturing a material that emits a spectrum that matches or is close to the corresponding spectrum is also presented, making it possible to provide accurate manufacturing information when manufacturing a color-producing material that provides colors taking color vision diversity into consideration. [Explanation of symbols]

[0066] 1...information presentation system, 10...color conversion system, 20...material selection system, 11...acquisition unit, 12...response calculation unit, 13...spectrum calculation unit, 14...generation unit, 21...selection unit, 22...presentation unit, 202...memory (storage unit).

Claims

1. an acquisition unit that acquires information on the reference spectrum of a reference color-producing material; a calculation unit that calculates a reference response, which is a response of each cone of the reference color vision subject, based on the reference spectrum and a reference model that indicates the sensitivity characteristics of each cone of the reference color vision subject, changes the reference spectrum to repeatedly generate candidate spectra, calculates a subject response, which is a response of each cone of the subject, based on the candidate spectrum and a subject model that indicates the sensitivity characteristics of each cone of the subject, searches for the candidate spectrum when the subject response matches or is close to the reference response, identifies a converted spectrum, and synthesizes the reference spectrum and the converted spectrum to calculate a corresponding spectrum for generating a response in the subject that matches or is close to the response from the color vision system of the reference color vision subject who visually recognizes the reference color-producing material; a storage unit for storing information on a plurality of raw material spectra corresponding to a plurality of raw material color-forming materials to be mixed; a selection unit that repeatedly acquires a plurality of arbitrary raw material spectra from the plurality of raw material spectra stored in the storage unit, and calculates a superposed spectrum by superposing the arbitrary plurality of raw material spectra using weighting, and selects, as a plurality of mixed materials, a plurality of raw material color-forming materials corresponding to the arbitrary plurality of raw material spectra used in calculating the superposed spectrum when the superposed spectrum matches or is approximate to the corresponding spectrum; a presentation unit that presents information that identifies the types of the raw color-forming materials as the plurality of mixed materials; An information presentation system comprising:

2. the storage unit further stores information on absorption spectra, which are absorption characteristics of colors corresponding to one or more wavelength absorbing materials to be mixed; the selection unit repeatedly calculates the superposed spectrum by further using information on the absorption spectrum, and when the superposed spectrum matches or is approximate to the corresponding spectrum, further selects, as the mixed material, the wavelength absorbing material corresponding to the absorption spectrum used when calculating the superposed spectrum. The information presentation system according to claim 1 .

3. the acquisition unit further acquires a consideration ratio indicating a weight of the transformed spectrum relative to the reference spectrum when combining the reference spectrum and the transformed spectrum; the calculation unit calculates the corresponding spectrum based on the reference spectrum, the converted spectrum, and the consideration ratio; The information presentation system according to claim 1 or 2.

4. the selection unit determines a mixing ratio of the plurality of mixed materials that, when mixed, emit a spectrum that matches or is similar to the corresponding spectrum based on weightings of the arbitrary plurality of raw material spectra used in calculating the superimposed spectrum; The presentation unit further presents information about the mixing ratio. The information presentation system according to claim 1 or 2.

5. On the computer, an acquisition step of acquiring reference spectrum information of a reference color-producing material; a calculation step of calculating a reference response, which is the response of each cone of the reference color vision subject, based on the reference spectrum and a reference model that indicates the sensitivity characteristics of each cone of the reference color vision subject, changing the reference spectrum to repeatedly generate candidate spectra, calculating a subject response, which is the response of each cone of the subject, based on the candidate spectrum and a subject model that indicates the sensitivity characteristics of each cone of the subject, searching for the candidate spectrum when the subject response matches or is close to the reference response to identify a converted spectrum, and synthesizing the reference spectrum and the converted spectrum to calculate a corresponding spectrum for generating in the subject a response that matches or is close to the response from the color vision system of the reference color vision subject who viewed the reference color-producing material; a storage step for storing information on a plurality of raw material spectra corresponding to each of a plurality of raw material color-forming materials to be mixed; a selection step of repeatedly obtaining a plurality of arbitrary raw material spectra from the plurality of raw material spectra stored in the storage step, superimposing the arbitrary plurality of raw material spectra using weighting to calculate a superimposed spectrum, and selecting, as a plurality of mixed materials, a plurality of raw material color-forming materials corresponding to the arbitrary plurality of raw material spectra used in calculating the superimposed spectrum when the superimposed spectrum matches or is approximate to the corresponding spectrum; a presentation step of presenting information identifying the types of the raw color-forming materials as the plurality of mixed materials; An information presentation program that executes the above.

6. an acquisition step of acquiring reference spectrum information of a reference color-producing material; a calculation step of calculating a reference response, which is the response of each cone of the reference color vision subject, based on the reference spectrum and a reference model that indicates the sensitivity characteristics of each cone of the reference color vision subject, changing the reference spectrum to repeatedly generate candidate spectra, calculating a subject response, which is the response of each cone of the subject, based on the candidate spectrum and a subject model that indicates the sensitivity characteristics of each cone of the subject, searching for the candidate spectrum when the subject response matches or is close to the reference response to identify a converted spectrum, and synthesizing the reference spectrum and the converted spectrum to calculate a corresponding spectrum for generating in the subject a response that matches or is close to the response from the color vision system of the reference color vision subject who viewed the reference color-producing material; a storage step for storing information on a plurality of raw material spectra corresponding to each of a plurality of raw material color-forming materials to be mixed; a selection step of repeatedly obtaining a plurality of arbitrary raw material spectra from the plurality of raw material spectra stored in the storage step, superimposing the arbitrary plurality of raw material spectra using weighting to calculate a superimposed spectrum, and selecting, as a plurality of mixed materials, a plurality of raw material color-forming materials corresponding to the arbitrary plurality of raw material spectra used in calculating the superimposed spectrum when the superimposed spectrum matches or is approximate to the corresponding spectrum; a presentation step of presenting information identifying the types of the raw color-forming materials as the plurality of mixed materials; An information presentation method comprising:

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