Moire display unit, moire pattern generation device, moire pattern generation system, and moire pattern generation method

Abstract

To solve the problem in which, conventionally, there is not any pattern that visualizes a moire image in which movement is felt or any thing that creates the pattern.SOLUTION: A moire display body has a first pattern, and a second pattern that is installed at a position away by a predetermined distance from the first pattern and its phase continuously changes relative to the first pattern in at least one region. For example, if the phase of the second pattern changes according to a function in at least one section, it is possible to visualize a moire image in which movement is felt. Therefore, it is possible to visualize a moire image in which natural movement is felt by inputting data such as an input image and its feature value.SELECTED DRAWING: Figure 12

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a moiré display body, a moiré visualization pattern generation device, a moiré visualization pattern generation system, and a moiré visualization pattern generation method.

Background Art

[0002] "Moiré (or moiré)" is an interference fringe that visually occurs when multiple periodic patterns or structures are superimposed. Physically speaking, moiré can be said to be the beat phenomenon of two spatial frequencies. Since moiré occurs in various forms, there are cases where moiré is removed as an undesirable thing, but conversely, there are also cases where the generated moiré is used as a useful thing. [[ID=I5]]

[0003] "On a substrate, a wavy multi-line that is a transverse wave, and a multi-line pattern substantially orthogonal to the wavy multi-line are provided in the background of the wavy multi-line, " The wavy multi-line forms a relief image, The multi-line pattern has a latent image characterized by being composed of a latent image portion shifted by 1 / 2 pitch and a non-latent image portion other than the latent image portion." is described.

[0004] [[ID=For example, in Patent Document 1, a moiré image is created for anti-counterfeiting / replication purposes,

Prior Art Documents

Patent Documents

[0005] "

Patent Document 1

[0006] However, conventional technology did not exist to create patterns that could visualize moiré patterns that conveyed a sense of natural movement, nor to create such patterns.

[0007] The embodiments of this disclosure have been made in view of the above problems, and aim to provide a moiré display body that visualizes a moiré image that senses motion by inputting data such as an input image and its feature values, a moiré visualization pattern generation device, a moiré visualization pattern generation system, and a moiré visualization pattern generation method. [Means for solving the problem]

[0008] To solve the above problems, one of the moiré display elements of a typical embodiment of this disclosure is: The first pattern and, A second pattern is installed at a predetermined distance from the first pattern, and in at least one region, its phase continuously changes with respect to the first pattern. It is equipped with. Furthermore, in the above, "continuously changing" means changing with a certain tendency within a certain interval, and does not necessarily have to be continuous at all times; it may change discretely.

[0009] In one of the moiré displays of another embodiment, The phase of the second pattern described above varies depending on the function over at least one interval.

[0010] In one of the moiré displays of another embodiment, Set a reference point. When the coordinates centered on the reference point have the coordinate in the direction perpendicular to the moiré fringes as x and the coordinate perpendicular to x as y, The first pattern R satisfies the following formula (1), The second pattern B satisfies the following formula (2), The phase shift amount PH representing the change in the phase of the second pattern with respect to the first pattern satisfies the following formula (3). [Number] Here, α and P are values ​​in the first pattern, which is a stripe pattern. α is the angle of the stripe, P is the pitch of the stripe, and k is the phase shift amount coefficient.

[0011] In one of the moiré display bodies of other embodiments, The phase shift amount coefficient k is represented by a function.

[0012] In one of the moiré display bodies of other embodiments, The phase shift amount coefficient k changes continuously.

[0013] In one of the moiré display bodies of other embodiments, The phase shift amount coefficient k satisfies k = ax + b. Here, a and b are constants.

[0014] In one of the moiré display bodies of other embodiments, The phase shift amount coefficient k changes radially from the reference point.

[0015] In one of the moiré display bodies of other embodiments, There are a plurality of the reference points.

[0016] To solve the above problems, one of the moiré imaging pattern generation devices of typical embodiments of the present disclosure includes a reading unit, an extraction unit, a creation unit, and the reading unit The input image that will be the basis for the moiré pattern and moiré information that specifies the conditions for the moiré pattern are obtained. The extraction unit is Extract feature values ​​for each region in the aforementioned input image, The aforementioned creation unit, Based on the input image and the moiré information, a first pattern is generated. Based on the input image and the moiré information, different phase shift amounts are determined for the first pattern according to the characteristic values ​​of each region of the input image, and different phase shift amounts are determined according to the position within each region of the region, and a second pattern is generated which is placed at a predetermined distance from the first pattern. A moiré pattern is created consisting of the first pattern and the second pattern.

[0017] In one of the moiré pattern generation devices of another embodiment, The moiré information includes information regarding the basic configuration of the first pattern and the second pattern, and gradient information. The aforementioned feature value includes at least one of the following: brightness, saturation, hue, density, transparency, lightness, chromaticity, and grayscale level of the image.

[0018] To solve the above problems, one of the moiré pattern generation systems of a representative embodiment of this disclosure is: An information processing server and one or more client terminals are connected via a communication network. The aforementioned information processing server is Includes a moiré pattern generation device, The moiré pattern generation apparatus is The reading unit, Extraction section, Creation section, Includes, The reading unit is, The input image that will be the basis for the moiré pattern and moiré information that specifies the conditions for the moiré pattern are acquired from one or more client terminals via the communication network. The extraction unit is Extract feature values ​​for each region in the aforementioned input image, The aforementioned creation unit, Based on the input image and the moiré information, a first pattern is generated. Based on the input image and the moiré information, different phase shift amounts are determined according to the characteristic values ​​of each region of the input image and the position within each region relative to the first pattern, and a second pattern is generated which is placed at a predetermined distance from the first pattern. A moiré pattern is created consisting of the first pattern and the second pattern.

[0019] In one of the moiré pattern generation systems of another embodiment, The moiré information includes information regarding the basic configuration of the first pattern and the second pattern, and gradient information. The aforementioned feature value includes at least one of the following: brightness, saturation, hue, density, transparency, lightness, chromaticity, and grayscale level of the image.

[0020] To solve the above problems, one of the moiré pattern generation methods of a representative embodiment of this disclosure is: A step of generating a first pattern based on an input image and moiré information specifying the conditions for the moiré pattern, A step of determining the amount of phase variation for each region of the first pattern according to the characteristic values ​​of each region of the input image based on the input image and the moiré information, and generating a second pattern that is placed at a predetermined distance from the first pattern, A step of obtaining a moiré pattern consisting of the first pattern and the second pattern, Includes.

[0021] In one of the moiré pattern generation methods of other embodiments, The moiré information includes information regarding the basic configuration of the first pattern and the second pattern, and gradient information. The aforementioned feature value includes at least one of the following: brightness, saturation, hue, density, transparency, lightness, chromaticity, and grayscale level of the image. [Effects of the Invention]

[0022] According to embodiments of this disclosure, it is possible to input an input image and data such as its feature values ​​to visualize a moiré image that conveys motion. Other issues, configurations, and effects will be clarified by the description of the embodiments for carrying out the invention below. [Brief explanation of the drawing]

[0023] [Figure 1] This figure schematically shows an input image from which a moiré pattern is to be generated according to this disclosure. [Figure 2] This diagram schematically shows the layer information related to this disclosure. [Figure 3] This figure schematically illustrates information regarding the moiré display element related to this disclosure. [Figure 4] This figure shows an example of the basic pattern related to this disclosure. [Figure 5] This schematic diagram shows an example of setting an aperture / non-aperture when transmittance is used as a feature value and a rectangular wave-shaped transmittance value is obtained. [Figure 6] This schematic diagram shows an example of setting an aperture / non-aperture when transmittance is used as a feature value and a sinusoidal transmittance value is obtained. [Figure 7] This figure shows examples of the basic pattern (first pattern) and patterns with varying open / non-open ratios (second pattern) of the stripe pattern related to this disclosure. [Figure 8] This figure shows an example of an input image related to this disclosure. [Figure 9] This figure shows an image of the phase shift amount corresponding to the phase shift coefficient related to this disclosure. [Figure 10] This disclosure shows the change in moiré fringe brightness in response to the change in the phase shift coefficient. [Figure 11] This figure shows the definition of the visible area of ​​moiré patterns related to this disclosure. [Figure 12] Figure 8 of this disclosure shows the moiré patterns created for the input image shown. [Figure 13] Examples of other input images related to this disclosure are shown below. [Figure 14] This figure shows an example of moiré patterns when the phase shift coefficient k related to this disclosure changes monotonically. [Figure 15] This document shows an example of how the phase shift coefficient k related to this disclosure changes exponentially. [Figure 16] This document shows an example of how the phase shift coefficient k related to this disclosure changes logarithmically. [Figure 17] This disclosure shows an example of how the phase shift coefficient k changes trigonometrically. [Figure 18] This disclosure shows an example of how the phase shift coefficient k changes in a step-like manner. [Figure 19] This disclosure shows an example of how the phase shift coefficient k changes compositely. [Figure 20] This disclosure shows an example where the phase shift coefficient k has noise. [Figure 21] This figure shows a cross-section of the moiré display example (basic form) shown in Figure 3 of this disclosure. [Figure 22] This figure shows a cross-section of another moiré display element configuration example (film folding type) related to this disclosure. [Figure 23] This figure shows a cross-section of another moiré display element configuration example (film curved type) related to this disclosure. [Figure 24] This figure shows a cross-section of another moiré display element configuration example (cardboard / film curved type) related to this disclosure. [Figure 25] This figure shows an example of the configuration (square arrangement type) of another moiré display element related to this disclosure. [Figure 26] This is a flowchart for obtaining the output pattern related to this disclosure as an image. [Figure 27] This figure shows the configuration of a computer system for implementing an embodiment of the present disclosure. [Figure 28]This figure shows the configuration of the moiré pattern generation system related to this disclosure. [Modes for carrying out the invention]

[0024] Embodiments of the present invention will be described below. However, the embodiments of the present invention are not limited to those described below. Modifications such as design changes can be made based on the knowledge of those skilled in the art, and such modified embodiments may also be included within the scope of the embodiments of the present invention.

[0025] Below, we will first explain the display device for showing moiré patterns and the methods and techniques for generating patterns that reveal moiré patterns.

[0026] <1 Input Information> Figures 1-4 illustrate the overview of input information in a pattern generation system for manifesting moiré patterns. The input information to the generation system includes feature values ​​of the input image (Figure 1), layer information (Figure 2), information about the moiré display (Figure 3), and basic pattern information (Figure 4).

[0027] <1-1 Input Image and Feature Values> Figure 1 is a schematic diagram illustrating an example of an input image from which a moiré pattern is to be generated. In this disclosure, "input image" refers to image data to be moiré-processed, such as a design drawing. In Figure 1, to clearly explain the input image, a design consisting of three parts—a triangle, a circle, and a square—is used, with each part represented to give a sense of front and back. However, the input image is not limited to these and can be any image. Furthermore, the input image can be in color or monochrome.

[0028] In this disclosure, "feature values ​​of the input image" refer to values ​​relating to the input image, such as brightness, saturation, hue, density, transparency, lightness, chromaticity, and grayscale level (grayscale value). These feature values ​​may be shown for each pattern, part, area, pixel, or block of several pixels in the input image. Furthermore, they may be shown using representative values ​​such as the average, median, maximum, and minimum values ​​for each of these areas.

[0029] <1-2 Layer Information> Figure 2 is a schematic diagram that divides the design diagram from Figure 1 into layers and shows the layer information.

[0030] In this disclosure, "layer information" refers to information that specifies the front-to-back relationship between patterns and parts of an input image. Layer information may be expressed by numerically defining the specific front-to-back distance, or it may simply indicate the front-to-back order. By using this layer information, a clear sense of depth can be achieved in the moiré image. Furthermore, this enhances the viewer's sense of immersion when viewing the moiré image.

[0031] Figure 2 schematically shows how the three parts—a triangle, a circle, and a square—are each divided into three layers (1, 2, and 3). However, the number of layers is not limited to three, and the distance between layers does not have to be discrete; it can be continuous. Furthermore, the distance between layers can be set so that they appear to protrude (float) from the moiré display towards the observer, or so that they appear to be behind (sunk into) the moiré display.

[0032] <1-3 Information regarding moiré display> Figure 3 is a schematic diagram illustrating information about a moiré display. In this disclosure, "moiré display" refers to a display that utilizes moiré patterns, and generally includes posters, panels, and point-of-purchase (POP) displays.

[0033] Regarding the moiré display unit 4, information such as the size of the display area 6, the panel thickness (also called the "gap") 5, the refractive index of the material constituting the panel, and the "viewing distance," which is the distance from the average observer to the display area, constitutes information about the moiré display unit 4. Since three-dimensional moiré patterns are caused by the observer's binocular parallax, information about the positional relationship between the observer and the panel is necessary to calculate the parallax. Basically, if the center of the display area 6 coincides with the observer's eye level, the distance between the observer and the panel becomes the viewing distance.

[0034] Furthermore, if the center of the representation area 6 does not coincide with the observer's eye level, or if the height of the moiré pattern occurrence does not coincide with the observer's eye level, the "viewing distance" can be corrected based on the relationship between the moiré pattern occurrence and the observer's eye position.

[0035] <1-4 Basic Pattern Information> In this disclosure, "basic pattern" means a periodic pattern or structure that is superimposed in order to generate a moiré pattern.

[0036] Figure 4 shows typical examples of basic patterns. Basic patterns include linear patterns (Figure 4(a)) as unidirectional patterns, and grid patterns (Figure 4(b)) and checkered patterns (Figure 4(c)) as bidirectional patterns. Basic patterns are not limited to these; unidirectional patterns can also include wave patterns, zigzags, and repeating letters. Furthermore, bidirectional patterns can include not only geometric patterns such as dots (polka dots), but also disordered designs and letters.

[0037] In the following, this basic pattern may be referred to as the "first pattern," but this first pattern is not necessarily limited to the basic pattern described above; in some cases, it may refer to the back pattern.

[0038] In this disclosure, "basic pattern information" means information that indicates the shape and properties of the basic pattern, such as the shape of the pattern, line width, pitch, L / S (Line & Space) ratio, angle, and aperture / non-aperture ratio.

[0039] Furthermore, in this disclosure, "pattern characteristic values" refer to transmittance, reflectance, optical density, ink density, brightness, grayscale level (grayscale value), etc. In addition, in this disclosure, "aperture / non-aperture ratio" is a novel concept indicating the properties of the pattern and differs from conventional information such as line width, pitch, and L / S (Line & Space) ratio. The "aperture / non-aperture ratio" will be explained below.

[0040] <1-5 Open / non-open ratio> The pattern repeats at a fixed interval. Therefore, the feature values ​​of the pattern also change periodically. For the feature values ​​of the pattern that change periodically in this way, within one period, the parts where the feature values ​​are high in terms of brightness or transparency are designated as openings, and the other parts are designated as non-openings. Specifically, within one period, any part where the feature value is above a certain value may be designated as an opening. When determining the certain value, the mean or median of the feature values ​​of the entire pattern may be used, or the value may be normalized by the maximum and minimum values ​​and the cumulative ratio may be used.

[0041] Furthermore, apertures and non-apertures may be determined using the Fast Fourier Transform (FFT). Note that to obtain the characteristic values ​​of the pattern, you may use measured values ​​from the pattern or the pixel values ​​themselves, or you may use the average or median values ​​of the surrounding pixels.

[0042] Furthermore, one or more specific areas within the pattern may be designated as openings, non-openings, or areas that are neither openings nor non-openings, regardless of the above conditions. Here, a specific area refers to, for example, a design element such as a pattern, lettering, or motif intentionally created for design purposes, or an area corresponding to a stain or imperfection that may occur during manufacturing.

[0043] In the case of a unidirectional pattern, such as a linear pattern (Figure 4(a)), feature values ​​are obtained using the pattern period in a direction perpendicular to the extension of the line. In the case of a grid-like pattern (Figure 4(b)), feature values ​​are obtained using the two directions in which the pattern appears periodically.

[0044] Figure 5 is a schematic diagram showing an example of setting up an opening / non-opening when transmittance is used as a feature value and a rectangular wave-shaped transmittance value is obtained. In this example, the region showing the maximum transmittance becomes an opening, and the other regions become non-openings.

[0045] Figure 6 is a schematic diagram showing an example of setting up openings / non-openings when transmittance is used as a feature value and a sinusoidal transmittance value is obtained. In this example, the region where the transmittance value is above the average value becomes an opening, and the other region becomes a non-opening.

[0046] <1-6 Pitches> In this disclosure, the term "pitch" as used above means the distance between an opening and a non-opening. This pitch may be measured, for example, between the centers of an opening and a non-opening, or between the boundaries of an opening and a non-opening. In other words, the pitch is the distance of one period in a pattern that repeats at a constant interval.

[0047] As will be discussed later, the pitch of the pattern affects how the moiré pattern appears as the observer moves. For example, when the pitch is fine (i.e., the distance of one period is short), the moiré fringes are emphasized, and the apparent overlap also changes easily, making the effect of the pattern appearing recessed (depth effect) more noticeable. This change is also related to the relationship between the foreground pattern and the background pattern.

[0048] This pitch is, in principle, measured in the scanning direction of the pattern (i.e., the direction in which openings and non-openings repeat). For example, if the pattern is a stripe pattern, the pattern repeats in a direction perpendicular to the direction of extension of the lines, so the pitch is measured in a direction perpendicular to the direction of extension of the lines.

[0049] Similarly, when openings and non-openings consist of linear regions and repeat to form a pattern, the pitch is measured in the direction of the pattern's repetition (the direction perpendicular to the curve's extension direction). Furthermore, in the case of a pattern with multiple repeating directions for openings and non-openings (e.g., a checkerboard pattern), the pitch may be calculated in each direction or in only one direction.

[0050] In the above, the pitch was explained using regular patterns such as stripes and checks as examples. However, in this disclosure, the pitch is not limited to vertical and horizontal stripes or checks, but may also be calculated for patterns with different angles (such as diagonally arranged stripes), patterns with different regularity (for example, unevenness caused by printing errors), patterns with an indeterminate pitch (for example, when the pitch fluctuates within a pattern), patterns with different colors, etc. If the pitch, angle, color, etc. differ within the same image, the pitch may be calculated for each component (layer, region, etc.) of the image.

[0051] Furthermore, even if the pitch is the same, the direction of the pattern's extension (for example, the straight direction in the case of a stripe pattern) can affect how the moiré pattern appears. For example, depending on the angle of the pattern, the rate at which the moiré pattern changes may vary in relation to the direction in which the observer moves.

[0052] One concrete example of this phenomenon is that, for instance, when comparing a pattern of vertically aligned stripes with a pattern of diagonally aligned stripes at a 45-degree angle, even if the pitch is the same, as the observer moves left or right relative to these patterns, the moiré pattern created by the 45-degree angled stripes may appear to change more slowly in response to the observer's movement than the moiré pattern created by the vertically aligned stripes.

[0053] This is because, when the pattern is scanned in the direction of the observer's view, the pitch of patterns aligned at a 45-degree angle appears wider compared to patterns aligned vertically. Therefore, by adjusting the direction of pattern extension, the rate at which the moiré pattern changes in response to the observer's movement can be controlled, thereby enhancing the design potential of the moiré pattern.

[0054] <2 Output Patterns> The moiré pattern generated by the pattern generation system in the present invention consists of two types of patterns: a first pattern (front side) and a second pattern (back side). The moiré pattern used to visualize the moiré pattern is based on the superposition of the first and second patterns, with the pattern closer to the observer being referred to as the "front" pattern and the pattern further away from the observer being referred to as the "back" pattern.

[0055] <4 Characteristics of Moire Pattern Appearance> Due to differences in pitch and opening / non-opening ratio between the first pattern (front side) and the second pattern (back side), as well as the existence of a gap between the first pattern (front side) and the second pattern (back side), the following effects appear in combination in the moiré pattern.

[0056] <4-1 Moire intensity> The intensity of the moiré pattern tends to be stronger the closer the opening / non-opening ratio of the first pattern (front side) and the second pattern (back side) is to 1.

[0057] <4-2 Appearance Density> In this disclosure, "appearance density" refers to the degree of apparent darkness due to the difference in the aperture / non-aperture ratio between the first pattern (front side) and the first pattern (back side). The higher the aperture / non-aperture ratio of the pattern, the brighter the pattern and moiré tend to appear.

[0058] <4-3 Moiré Change Amount> Because the first pattern (foreground) and the second pattern (background) overlap through a gap, the phase of the moiré pattern differs depending on the observer's position (angle). In this case, the higher the aperture / non-aperture ratio, the more likely the moiré pattern is to remain bright, and the lower the aperture / non-aperture ratio, the more likely the moiré pattern is to remain dark (i.e., change is minimal). Also, the closer the aperture / non-aperture ratio is to 1, the greater the amount of moiré pattern change tends to be.

[0059] <5. Evaluation of Moiré Pattern Appearance> When evaluating the appearance of moiré patterns, the above-mentioned effects and other factors are observed in combination. In addition to these effects, another characteristic of moiré patterns is their "moiré tolerance," which refers to how well the moiré image remains visible even at viewing distances greater than expected.

[0060] In this invention, the moiré appearance is evaluated by focusing on the opening / non-opening ratio of the pattern, and the suitability for using moiré in design is comprehensively determined. The specific level of judgment is carried out using a comparative method or a tiered evaluation such as a three-stage system (e.g., ○△×). In addition to the overall evaluation, we may also conduct supplementary evaluations of external moiré image brightness and moiré image mobility (depending on what is considered important, these may or may not be done, as these will vary depending on the design to be expressed).

[0061] Furthermore, in this invention, when generating a first pattern (foreground) and a second pattern (background) from an input image, the aperture / non-aperture ratio is selected based on the results of this appearance evaluation. Generally, the appearance of moiré patterns and other similar phenomena varies depending on the pattern used, the image composition, the viewing environment, and other conditions. Therefore, in addition to a comprehensive appearance evaluation, it is desirable to evaluate specific attributes as well. For this reason, this disclosure also evaluates the following attributes.

[0062] <5-1 Moiré Image Brightness> "Moire image brightness" refers to the evaluation of the apparent brightness (lightness, contrast, and density) of the moiré pattern. This moiré image brightness varies mainly due to the combined effects of moiré intensity and apparent density. Evaluation is carried out using comparative methods or a graded evaluation with 11 levels (dark: -5, -4, ..., 4, 5: bright).

[0063] <5-2 Moiré Image Mobility> "Moire image mobility" refers to the evaluation of the movement and flickering of moiré patterns. Differences mainly arise from a combination of effects, such as moiré intensity and moiré mobility. Evaluation is performed using comparative methods or a tiered evaluation with 6 levels (small: 0, 1, ..., 4, 5: large).

[0064] <6. Examples of Moiré Pattern Generation> In the following, we will use a stripe pattern as an example and describe the method and system for generating a moiré pattern corresponding to the input image in the embodiment. In this embodiment, a pattern is generated in which the moiré stripes appear to move as the observer moves. In this embodiment, the phase of the second pattern is changed relative to the first pattern in order to give movement to the moiré fringes.

[0065] <6-1 Basic Patterns and Variation Patterns> Figure 7 shows examples of the basic stripe pattern (first pattern) and patterns with varying opening / non-opening ratios (second pattern) used in this embodiment. The basic pattern (a) (the first pattern) has an opening / non-opening ratio of 1.0, while (b) to (g) show patterns (the second pattern) in which the opening / non-opening ratio is varied from 1.5 to 9.0, respectively.

[0066] <6-2 Example of input image> Figure 8 shows an example of an input image in this embodiment. The input image in Figure 8 has a radial gradient applied to the center of the concentric circles, with the center as the reference point. Note that the reference point may be set to a point other than the center. This gradient becomes the characteristic value of the input image. The black areas with low brightness in the input image have a small amount of phase shift, while the white areas with high brightness in the input image have a large amount of phase shift. The amount of phase shift is continuous between the black and white areas. When the overlap between the first pattern and the second pattern shifts, the moiré fringes appear to move in the radial direction.

[0067] <6-3 Selection of pattern phase shift amount according to the feature values ​​of the input image> The procedure for generating a moiré pattern involves first 1) defining the region where the phase shift amount of the pattern will be changed, and then 2) setting the phase shift amount of the pattern according to the characteristic values ​​of the pattern. The phase shift amount is the amount of change in the phase of the second pattern relative to the first pattern. In this embodiment, the phase shift amount is determined using grayscale brightness so that it changes continuously in at least one region. Here, continuous change means that it can be expressed as a continuous function in at least one interval. A continuous function means a function that changes discretely but with a certain tendency, even if it is not necessarily continuous. Examples of continuous functions will be described later.

[0068] 1) The simplest way to define the region in which the phase shift amount of the pattern is changed is to define the region according to the contour of the input image. However, it is not always necessary to define it according to the contour of the image, and it may be set as appropriate depending on the situation in which the moiré display unit 4 is used. In this embodiment, for the sake of simplicity, the rectangle is defined as the region where the phase shift amount is changed, as shown in Figure 8. Next, 2) when setting the phase shift amount of the pattern according to the characteristic values ​​of the pattern, it is selected within the region, taking into account the distance from the reference point in a direction perpendicular to the moiré fringe.

[0069] <6-4 Phase shift amount> In this embodiment, when a reference point is set and the coordinate perpendicular to the moiré pattern is denoted as x and the coordinate perpendicular to x is denoted as y in a coordinate system centered on the reference point, the first pattern R satisfies the following equation (1).

number

[0070] Furthermore, the second pattern B satisfies equation (2) below.

number

[0071] In the second pattern, the phase within the cosine term of equation (2) is shifted by PH(x,y) compared to the first pattern. The phase shift amount PH, which represents this phase shift, satisfies the following equation (3).

number

[0072] From equation (3), the moiré pattern can be determined by the phase shift coefficient k, as shown in Table 1 below. [Table 1]

[0073] Figure 9 shows an image of the phase shift amount corresponding to the phase shift coefficient. The contents of Table 1 are represented graphically as shown in Figure 9. In Figure 9, the phase of the foreground pattern is shifted relative to the background pattern. The observation state from the front corresponds to the grayscale level.

[0074] <6-5 Changes in the phase shift coefficient> Figure 10 shows the change in moiré fringe brightness with respect to the change in the phase shift coefficient k in this embodiment. Figure 10(a) shows the relationship between the position perpendicular to the moiré fringe and the value of the phase shift coefficient k, and Figure 10(b) shows the relationship between the position perpendicular to the moiré fringe and the brightness of the moiré fringe.

[0075] The origin 0 is the reference point, which serves as the basis for determining the amount of phase shift, and in this embodiment, it corresponds to the center point of the input image. The direction perpendicular to the moiré fringes is the direction in which the amount of phase shift changes with respect to the reference point as the origin, and is perpendicular to the stripes.

[0076] As shown in Figure 10(a), if we let x be the direction perpendicular to the moiré fringe and k be the phase shift coefficient, then the phase shift coefficient in this embodiment can be expressed as k = ax + b. When the phase shift coefficient k increases linearly, the brightness of the moiré fringe changes periodically, as shown in Figure 10(b).

[0077] In this embodiment, since the input image is concentric, setting the reference point to the center of the concentric circles will result in the same phase shift amount in any radial direction; however, the phase shift amount may differ depending on the direction.

[0078] <6-6 Definition of Visibility Area> Figure 11 shows the definition of the visible area of ​​the moiré pattern in this embodiment. Figure 11(a) shows the relationship between the observer and the first and second patterns in this embodiment. Figure 11(b) shows the calculation of the basic viewing area in this embodiment.

[0079] As shown in Figure 11(a), in this embodiment, the apparent overlap of the first pattern and the second pattern shifts as the observer moves, causing the moiré pattern to move. Here, in order to set the amount of phase shift between the first pattern and the second pattern, it is necessary to define the viewing area observed by the observer.

[0080] First, set a reference point. When observing between Angle 1 and Angle 2 with respect to this reference point, set the area of the second pattern that can be seen through the first pattern as the basic visible area. In this embodiment, for Angle 1 and Angle 2, the front sides of the first pattern and the second pattern are set as 0 deg, Angle 1 is 45 deg, and Angle 2 is -45 deg. Note that Angle 1 and Angle 2 are the angles in the direction perpendicular to the stripe pattern.

[0081] In this case, as shown in Fig. 11(b), for the basic visible area, the relationship between the installation distance and the angle of the first pattern and the second pattern forms a right-angled isosceles triangle. So, the basic visible area is the installation distance between the first pattern and the second pattern × 2. The visible area is defined as the product of the pitch of the first pattern and this basic visible area.

[0082] <Gradient of 6 - 7 Phase Shift Coefficient> In this embodiment, when obtaining the phase shift coefficient k = ax + b in the visible area in the direction perpendicular to the moiré fringes, it is necessary to set a and b. When 0 < a ≤ 20 is satisfied, the movement of the moiré fringes can be felt. Preferably, 0.5 ≤ a ≤ 8 is satisfied. Note that b can be any value.

[0083] <6 - 8 Moiré Image> Fig. 12 shows the moiré fringes created for the input image shown in Fig. 8. When inputting an input image with a gradient formed radially from the reference point as shown in Fig. 8, the first pattern and the second pattern are formed. The first pattern and the second pattern are installed at a predetermined distance apart and observed within the visible area, then concentric moiré fringes centered on the reference point as shown in Fig. 12 are formed. The moiré fringes are continuously formed and appear to move as the observer moves.

[0084] <7 - 1 Other Examples of Input Images> Figure 13 shows examples of other input images. Figure 13(a) shows an example where a gradient is applied to the left and right sides, Figure 13(b) shows an example where a gradient is applied from the center to both the left and right sides, and Figure 13(c) shows an example where multiple gradient regions are formed radially.

[0085] In the example in Figure 13(a), the moiré patterns appear to move from left to right or right to left, in the same direction as the gradient. In the example in Figure 13(b), the moiré patterns appear to move from the center to the left and right, or from the left and right to the center, in the same direction as the gradient. In the example in Figure 13(c), the moiré patterns appear to move within each region where the gradient is formed.

[0086] <7-2 Phase shift coefficient and moiré motion> Figure 14 shows an example of moiré fringes when the phase shift coefficient k of this embodiment changes monotonically. Figure 14(a) shows the moiré fringes when the phase shift coefficient k of this embodiment changes monotonically. Figure 14(b) shows the movement of the moiré fringes when the phase shift coefficient k of this embodiment changes monotonically.

[0087] In the example shown in Figure 14, moiré fringes are continuously formed around the image "PUSH". As shown in Figure 10(a), when the phase shift coefficient changes monotonically by k=ax+b, the moiré fringes are formed at regular intervals, as shown in Figure 14(a). By forming moiré fringes in this way, the image can be effectively enhanced.

[0088] When the observer moves, the moiré patterns appear to move in the direction of arrow m01 or arrow m02, as shown in Figure 14(b). The direction in which the moiré patterns move changes depending on the direction the observer moves. The movement of the moiré patterns further emphasizes the central image "PUSH," attracting the observer's attention. The central position of the moiré patterns can be changed.

[0089] <7-2 Changes in other phase shift coefficients> FIG. 15 shows an example in which the phase shift amount coefficient k of this embodiment changes exponentially. FIG. 15(a) shows the change in moire fringe luminance when the phase shift amount coefficient k of this embodiment changes exponentially. FIG. 15(b) shows the movement of the moire fringe.

[0090] As shown in FIG. 15(a), the phase shift amount coefficient k may change according to the exponential function k = ae cx + b. The moire fringes shown in FIG. 14 move monotonously and lack tension. In contrast, when the phase shift amount coefficient k is changed according to the exponential function k = ae cx + b as shown in FIG. 15(a), as shown in FIG. 15(b), the moire fringes are formed at different intervals determined by the exponential function. When the observer moves, the moire fringes will move with undulations. Therefore, the observer can feel the movement of the moire fringes more strongly.

[0091] In addition, the exponential change of the phase shift amount coefficient k can bring a visual effect depending on the position where the moire fringes are formed and the positional relationship with other images. For example, as shown in FIG. 15(b), the exponential change of the phase shift amount coefficient k in the contour portion of the figure can also bring a visual effect such as embossing.

[0092] [[ID=1​​​​​​​​​​​​​a When it is changed to (c(x + 1))+b, as shown in FIG. 16(b), moiré fringes are formed at different intervals determined by a logarithmic function. When the observer moves, the moiré fringes will move with undulation. Therefore, the observer can feel the movement of the moiré fringes more strongly.

[0095] Also, the logarithmic function change of the phase shift amount coefficient k can bring about a visual effect depending on the position where the moiré fringes are formed and the positional relationship with other images. For example, as shown in FIG. 16(b), the logarithmic function change of the phase shift amount coefficient k in the contour part of the figure can also bring about a visual effect such as embossing.

[0096] Logarithmic function k = log a (c(x + 1))+b can make the movement of the moiré fringes be felt strongly when 1 < a and 0 < c. Preferably, when 1 < a ≤ 10 5 and 1 ≤ c ≤ 10 10 are satisfied, the movement of the moiré fringes can be felt more strongly. Note that b can be any value.

[0097] FIG. 17 shows an example in which the phase shift amount coefficient k of this embodiment changes trigonometrically. FIG. 17(a) shows the change in moiré fringe luminance when the phase shift amount coefficient k of this embodiment changes trigonometrically. FIG. 17(b) shows the movement of the moiré fringes.

[0098] The phase shift amount coefficient k may change according to the trigonometric function k = asin(cx)+b as shown in FIG. 17(a). When the phase shift amount coefficient k is changed according to the trigonometric function k = asin(x)+b shown in FIG. 17(a), as shown in FIG. 17(b), the moiré fringes are formed at intervals determined by the trigonometric function. When the observer moves, the moiré fringes will move so as to turn back near where the phase shift amount k = 0. Therefore, the observer can effectively feel the complex movement of the moiré fringes. Also, the movement of the turning-back part of the moiré fringes can be smoothly connected.

[0099] In addition, the trigonometric change in the phase shift amount coefficient k can bring about a visual effect depending on the position where moiré fringes are formed and the positional relationship with other images. For example, as shown in FIG. 17(b), the trigonometric change in the phase shift amount coefficient k at the contour portion of the figure can also bring about a visual effect such as embossing.

[0100] When the trigonometric function k = a sin(cx)+b, where 0 < a and 0 < c, the movement of the moiré fringes can be strongly felt. Preferably, when 1 ≤ a ≤ 20 and 1 ≤ c ≤ 3 are satisfied, the movement of the moiré fringes can be felt more strongly. Note that b can be any value. Further, in this embodiment, a sine wave is used, but a cosine wave k = a cos(cx)+b may also be used.

[0101] FIG. 18 shows an example in which the phase shift amount coefficient k of this embodiment changes stepwise.

[0102] As shown in FIG. 18, the phase shift amount coefficient k may change as a step function. The step function shown in FIG. 18 increases stepwise within the visible region. The step function may decrease stepwise or increase and decrease stepwise within the visible region. When the observer moves, the moiré fringes will move jerkily. Therefore, the observer can feel the movement of the moiré fringes effectively although it is unnatural.

[0103] FIG. 19 shows an example in which the phase shift amount coefficient k of this embodiment changes as a composite function.

[0104] As shown in FIG. 19, the phase shift amount coefficient k may change according to the composite function k = x * sin(x). The composite function k = x * sin(x) shown in FIG. 19 smoothly increases and decreases within the visible region. When the observer moves, the moiré fringes will move smoothly and irregularly. Therefore, the observer can effectively feel the movement of the moiré fringes.

[0105] Figure 20 shows an example where the phase shift coefficient k of this embodiment has noise. Figure 20(a) shows the change in moiré fringe brightness when the phase shift coefficient k(x) of this embodiment has noise. Figure 20(b) shows the error between the phase shift coefficient k(x) and the approximation function k'(x).

[0106] The phase shift coefficient k may be a measured value with noise, as shown in Figure 20(a). In this case, the measured phase shift coefficient k(x) may be expressed as an approximate function k'(x). The approximation method may be linear approximation, polynomial approximation, logarithmic approximation, exponential approximation, etc. It may also be obtained by the least squares method, etc. The difference Δk between the measured phase shift coefficient k(x) and the approximate function k'(x) is preferably within ±2. By doing so, the moiré movement can be made to feel natural and without any sense of incongruity. Furthermore, if Δk is set to ±1 or less, the fluidity of the moiré image movement can be further enhanced. Note that the phase shift coefficient k may be the same as the continuous measured values.

[0107] <8. Configuration of the moiré display> Figure 21 is a cross-sectional view of an example configuration (basic form) of the moiré display unit 4 shown in Figure 3. In the example in Figure 21, cardboard 7 printed with pattern layer 1 and film 8 printed with pattern layer 2 are connected by a bridge member 9.

[0108] Here, "pattern layer" refers to a layer on which a pattern is drawn, such as by printing. In Figure 21, pattern layers 1 and 2 are the first and second patterns output by the generation system. In this basic form, the first and second patterns are printed between the cardboard 7 and the film 8.

[0109] In the example shown in Figure 21, the cardboard 7 is preferably self-supporting. The film 8 may be made of a transparent material that transmits light. The bridge member 9 connects the cardboard 7 and the film 8 and is preferably made of a transparent material that transmits light, but it does not have to be transparent. Support members may be attached to support the cardboard 7. The cardboard 7 may be replaced with the film 8.

[0110] In the example shown in Figure 21, a panel may be placed between the cardboard 7 and the film 8. When a panel is placed, the first pattern and the second pattern are in contact with the panel. Therefore, when generating the patterns, it is sufficient to consider the thickness (gap) and refractive index of a single panel.

[0111] Figure 22 shows a cross-section of another example of the configuration of the moiré display 4 (folded film type). In the example in Figure 22, the film 8 is folded in the center or near the center. Note that the film 8 may be made by folding one sheet or by joining two sheets together.

[0112] In the moiré display 4 shown in Figure 22, the distance between the cardboard 7 and the film 8 varies depending on the location, and the distance between the pattern layer 1 of the first pattern and the pattern layer 2 of the second pattern also differs. Therefore, it is possible to form more complex moiré patterns.

[0113] Figure 23 shows a cross-section of another example of the configuration of the moiré display 4 (curved film type). In the example in Figure 23, the film 8 is formed in a curved shape.

[0114] In the moiré display 4 shown in Figure 23, the distance between the cardboard 7 and the film 8 varies depending on the location, and the distance between the pattern layer 1 of the first pattern and the pattern layer 2 of the second pattern also differs. Therefore, it is possible to form more complex moiré patterns.

[0115] Figure 24 shows a cross-section of another example of the configuration of the moiré display 4 (cardboard / film curved type). In the example in Figure 24, the cardboard 7 and film 8 are formed in a curved shape.

[0116] In the moiré display 4 shown in Figure 24, the distance between the cardboard 7 and the film 8 varies depending on the location, and the distance between the pattern layer 1 of the first pattern and the pattern layer 2 of the second pattern also differs. Furthermore, the way the first and second patterns overlap varies considerably depending on the observer's position and direction. Therefore, it is possible to form more complex moiré patterns.

[0117] Figure 25 shows another example of the configuration of the moiré display unit 4 (corner arrangement type). In the example in Figure 25, cardboard 7 and film 8 are formed in a curved shape on two walls and corners of a passageway, etc., via panels 10. The moiré display unit 4 shown in Figure 25 can display continuously even with corners.

[0118] The configuration of the moiré display unit 4 has been described above. Whether the pattern layer is placed between the film and the panel or on the opposite side can be determined as appropriate, but from the viewpoint of scratch resistance and dust prevention, it is preferable to place the pattern layer on the inside.

[0119] Furthermore, the configurations described in Figures 21 to 25 can be partially combined or modified. In addition, although cardboard was used to form the first pattern in this embodiment, film may also be used. Other embodiments may use the examples shown in Patent Document 3.

[0120] <9-0 Method for generating patterns to reveal moiré patterns> Figure 26 is an example of a simplified flowchart for obtaining an output pattern using an image. However, the order of input information (such as layer information input) is not limited to that shown in this flowchart.

[0121] First, in step 101, the input image data is read. As shown in Figure 1, the image from which you want to generate a moiré pattern is read as the input image. In this embodiment, the input image shown in Figure 8 is read as data. Here, the input image refers to the image data to be moiré-ified, such as a design drawing. This input image may be, for example, an image selected by the user, or an image transmitted from a remote external device. Next, in step 102, the feature values ​​of the input image are extracted. In this embodiment, the gradient of the input image shown in Figure 8 is used as the feature value.

[0122] Next, in step 103, you input the layer information. As shown in Figure 2, the layer information specifies the spacing between patterns and other elements in the input image. There can be one layer or multiple layers.

[0123] Next, in step 104, moiré display information is entered. Here, the specific structure of the moiré display 4, as shown in Figure 3, is entered. In this embodiment, for the moiré display 4 as shown in Figures 21 to 25, the distance between the first pattern and the second pattern, the observation angle, etc., are entered as moiré display information.

[0124] Next, in step 105, input the basic pattern information. The basic pattern can be the stripe pattern shown in Figure 7. Next, in step 106, set the opening / non-opening ratio. The opening / non-opening ratio can be set by referring to the opening / non-opening ratio of the stripe pattern shown in Figure 7.

[0125] Next, in step 107, the phase shift amount is set. In this embodiment, the second pattern is shifted relative to the basic first pattern by the amount shown in equation (3). In this embodiment, it is preferable to express the phase shift coefficient k in equation (3) as a function. The function can be a continuous function, a step function, an approximation function, etc., as shown in Figures 10, 15 to 20.

[0126] Next, set the pitch ratio in step 108. The pitch ratio is determined for each depth division of each layer. If there is only one layer, there is no ratio setting.

[0127] Steps 103 to 108 set moiré information that specifies the conditions for the moiré pattern. The moiré information should include at least one of the following: information about the order of layers in the input image (e.g., number of layers, layer order, etc.), information about the basic structure of the moiré pattern, information about the overall size (expressed in pixels or distance), gradient information, etc. Here, information about the basic structure of the moiré pattern should include at least one of the following: the shape of the moiré pattern (stripes, grid, etc.), the direction of the lines (vertical, diagonal), the pitch, the desired sense of depth (how much depth the moiré of each layer should have), how to use the moiré pattern (material of the plate to which it is attached, thickness, observation distance), and the amount of phase shift of the pattern.

[0128] Next, in step 109, the first pattern is output. The first pattern is generated based on the input images extracted in steps 101 and 102 and the moiré information that specifies the conditions for the moiré visualization pattern set in steps 103 to 108.

[0129] Next, step 110 outputs a second pattern. The second pattern has a region with at least one reference point, and the phase of the second pattern changes continuously from the reference point relative to the first pattern.

[0130] In this way, by inputting the input image and moiré information that specifies the conditions for the moiré visualization pattern, and generating a first pattern and a second pattern, it is possible to visualize a moiré image that conveys motion.

[0131] <A system for generating patterns that reveal 10-0 moiré patterns> Next, with reference to Figure 27, a computer system 300 for carrying out embodiments of the present disclosure will be described. The mechanisms and apparatus of the various embodiments disclosed herein may be applied to any suitable computing system.

[0132] The main components of the computer system 300 include one or more processors 302, memory 304, terminal interface 312, storage interface 314, I / O (input / output) device interface 316, and network interface 318. These components may be interconnected via a memory bus 306, an I / O bus 308, a bus interface unit 309, and an I / O bus interface unit 310.

[0133] The computer system 300 may include one or more general-purpose programmable central processing units (CPUs) 302A and 302B, collectively referred to as processors 302. In one embodiment, the computer system 300 may comprise multiple processors, and in another embodiment, the computer system 300 may be a single CPU system. Each processor 302 executes instructions stored in memory 304 and may include an onboard cache.

[0134] In some embodiments, memory 304 may include a random-access semiconductor memory, storage device, or storage medium (either volatile or non-volatile) for storing data and programs. Memory 304 may store all or some of the programs, modules, and data structures that perform the functions described herein. For example, memory 304 may store a moiré pattern generation application 350. In some embodiments, the moiré pattern generation application 350 may include instructions or descriptions that perform the functions described later on the processor 302.

[0135] In some embodiments, the moiré pattern generation application 350 may be implemented in hardware via semiconductor devices, chips, logic gates, circuits, circuit cards, and / or other physical hardware devices, instead of, or in addition to, a processor-based system. In some embodiments, the moiré pattern generation application 350 may include data other than instructions or descriptions. In some embodiments, a camera, sensor, or other data input device (not shown) may be provided to communicate directly with the bus interface unit 309, the processor 302, or other hardware of the computer system 300.

[0136] The computer system 300 may include a bus interface unit 309 for communication between a processor 302, memory 304, a display system 324, and an I / O bus interface unit 310. The I / O bus interface unit 310 may be connected to an I / O bus 308 for transferring data to and from various I / O units. The I / O bus interface unit 310 may communicate via the I / O bus 308 with a plurality of I / O interface units 312, 314, 316, and 318, also known as I / O processors (IOPs) or I / O adapters (IOAs).

[0137] The display system 324 may include a display controller, a display memory, or both. The display controller can provide video, audio, or both data to the display device 326. The computer system 300 may also include one or more devices, such as sensors, configured to collect data and provide that data to the processor 302.

[0138] For example, the computer system 300 may include biometric sensors that collect heart rate data and stress level data, environmental sensors that collect humidity data, temperature data, pressure data, etc., and motion sensors that collect acceleration data, movement data, etc. Other types of sensors can also be used. The display system 324 may be connected to a display device 326 such as a standalone display screen, television, tablet, or portable device.

[0139] The I / O interface unit has the function of communicating with various storage or I / O devices. For example, the terminal interface unit 312 can be fitted with user I / O devices 320 such as user output devices like video display devices and speaker TVs, and user input devices such as keyboards, mice, keypads, touchpads, trackballs, buttons, light pens, or other pointing devices.

[0140] The user may use the user interface to operate a user input device to input data and instructions to the user I / O device 320 and the computer system 300, and to receive output data from the computer system 300. The user interface may be displayed on a display device, played back by a speaker, or printed via a printer, for example, through the user I / O device 320.

[0141] The storage interface 314 can accommodate one or more disk drives or direct-access storage devices 322 (typically magnetic disk drive storage devices, but may be arrays of disk drives configured to appear as a single disk drive or other storage devices). In some embodiments, the storage device 322 may be implemented as any secondary storage device.

[0142] The contents of memory 304 are stored in storage device 322 and may be read from storage device 322 as needed. The I / O device interface 316 may provide an interface to other I / O devices such as printers and fax machines. The network interface 318 may provide a communication path so that the computer system 300 and other devices can communicate with each other. This communication path may be, for example, a network 330.

[0143] In one embodiment, the computer system 300 may be a device that receives requests from other computer systems (clients) that do not have a direct user interface, such as a multi-user mainframe computer system, a single-user system, or a server computer. In another embodiment, the computer system 300 may be a desktop computer, a portable computer, a laptop computer, a tablet computer, a pocket computer, a telephone, a smartphone, or any other suitable electronic device.

[0144] Next, the system configuration relating to this disclosure will be described with reference to Figure 28. Figure 28 is a diagram showing the moiré pattern generation system 4900 relating to this disclosure.

[0145] As shown in Figure 28, the moiré pattern generation system 4900 according to this disclosure mainly consists of an information processing server 4905, a network 4975, and client terminals 4985A and 4985B. The information processing server 4905 is connected to the client terminals 4985A and 4985B via the network 4975.

[0146] The information processing server 4905 consists of a transfer unit 4910 that transmits and receives data with external devices such as client terminals 4985A and 4985B, a data management unit 4920 that manages various data received from client terminals 4985A and 4985B, a storage unit 4930 for storing input images and moiré information received from client terminals 4985A and 4985B, and a moiré pattern generation device 4935 for generating moiré patterns.

[0147] Furthermore, as shown in Figure 28, the moiré pattern generation device 4935 includes a reading unit 4940 for reading the input image, an extraction unit 4945 for extracting feature values ​​from the input image, and a creation unit 4950 for creating a moiré pattern.

[0148] Each functional unit included in the information processing server 4905 may be a software module constituting the moiré pattern generation application 350 shown in Figure 27, or it may be an independent, dedicated hardware device. Furthermore, these functional units may be implemented in the same computing environment or in a distributed computing environment. For example, the moiré pattern management unit 235 may be implemented on a remote server, while the other functional units may be implemented on local devices such as client terminals 4985A and 4985B.

[0149] Client terminals 4985A and 4985B are client terminals that receive information regarding moiré patterns generated by the moiré pattern generation device 4935. These client terminals 4985A and 4985B may be terminals used by individuals, or they may be terminals used in organizations such as police stations or private companies. These client terminals 4985A and 4985B may be any device, such as a desktop computer, laptop computer, tablet, or smartphone.

[0150] It should be noted that the present invention is not limited to the embodiments described above, and various modifications are possible. For example, various changes are possible, such as the shape of the basic pattern, the setting of the open / non-opening ratio, and how these are reflected in the patterns on the front and back sides. Furthermore, the drawings used in the embodiments are for illustrative purposes to make the present invention easier to understand, and are not necessarily limited to the designs described in the embodiments.

[0151] For example, although the embodiments of the present invention have been described above in the form of an apparatus, system, method, etc., the embodiments of the present invention are not limited thereto and may be implemented in the form of printed materials (displays), computer programs, etc.

[0152] Furthermore, it goes without saying that various changes are possible to the settings described above, such as the phase shift amount, pitch ratio, and aperture / non-aperture ratio. Note that the phase shift amount can also be referred to as the phase variation amount.

[0153] Although the best mode for carrying out the present invention has been described above with reference to the accompanying drawings, the scope of this disclosure is not limited to the illustrated and described embodiments, but may also include all embodiments that produce effects equivalent to those aimed at by the present invention. Furthermore, the scope of this disclosure is not limited to the features of the invention defined by the claims, but includes all disclosed features and all combinations thereof.

[0154] As used in this disclosure, the terms “part,” “system,” and “network” refer to physical entities. These physical entities may be electrical circuits, their associated devices, or wired / wireless connections thereof. These may have specific functions. Combinations of these with specific functions may produce synergistic effects through the combination of their functions.

[0155] The terms used in this disclosure and, in particular, in the attached claims (e.g., in the text of the attached claims) are generally intended to be “open” terms (for example, the term “has” should be interpreted as “has at least,” and the term “includes” should be interpreted as “includes but not limited to,” and so on).

[0156] Furthermore, when interpreting terminology, structure, features, aspects, and embodiments, drawings should be consulted as necessary. Any information that can be directly and unambiguously derived from the drawings should, like text, serve as the basis for any amendments.

[0157] Furthermore, if a specific number of introduced claims is intended, such intention is explicitly stated in the claims; if no such statement is made, such intention does not exist. For example, to aid understanding, the claims attached below may introduce an enumeration of claims, including the use of the introductory phrases "at least one" and "one or more."

[0158] However, the use of such phrases should not be interpreted as meaning that the introduction of a claim description with the indefinite article "a" or "an" limits a particular claim containing such a claim to embodiments containing only one such description. The opening phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and / or "an") should be interpreted as meaning at least "at least one" or "one or more." The same applies to the use of clear articles used to introduce the description of a claim. [Explanation of symbols]

[0159] 1. Pattern layer (first pattern) 2 Pattern Layer (Second Pattern) 4 Moire display 5. Panel thickness 6 Expression area 7. Cardboard 8 films 9 Bridge materials 4900 Moire Pattern Generation System 4905 Information Processing Server 4910 Transfer Unit 4920 Data Management Department 4930 Storage Unit 4935 Moire pattern generation device 4940 Reading Unit 4945 Extraction part 4950 Creation Department 4975 Network 4985A, 4985B client terminals

Claims

1. The first pattern and, A second pattern is installed at a position superimposed on the first pattern at a predetermined distance, and in at least one region, its phase continuously changes with respect to the first pattern. Equipped with, The phase of the second pattern described above changes depending on the function over at least one interval. When a reference point is set, and the coordinate system centered on the reference point is such that x is the coordinate perpendicular to the moiré pattern and y is the coordinate perpendicular to x, The first pattern R satisfies the following equation (1): The second pattern B described above satisfies the following equation (2): The phase shift amount PH, which represents the phase change of the second pattern relative to the first pattern, satisfies the following equation (3): A moiré display unit characterized by the following features. [Math 5] Here, α and P are values ​​in the first pattern, which is a stripe pattern, where α is the stripe angle, P is the stripe pitch, and k is the phase shift coefficient.

2. The phase shift coefficient k satisfies k = ax + b, where a and b are constants, and a satisfies 0 < a ≤ 20. The moiré display according to feature 1.

3. The phase shift coefficient k is k = ae cx The conditions are met if +b, a, b, and c are constants, and 0 < a and 0 < c. The moiré display according to feature 1.

4. The phase shift coefficient k is given by k = log a The following conditions must be met: (c(x+1))+b, a, b, and c are constants, and 1 < a and 0 < c. The moiré display according to feature 1.

5. The phase shift coefficient k satisfies k = asin(cx) + b, where a, b, and c are constants, and 0 < a and 0 < c. The moiré display according to feature 1.

6. The phase shift coefficient k changes radially from the reference point. A moiré display according to any one of claims 1 to 5.

7. There are multiple reference points. A moiré display according to any one of claims 1 to 6.

8. A moiré display generating apparatus according to any one of claims 1 to 7, The generating apparatus is The reading unit, Extraction section, Creation section, Includes, The reading unit is, The input image that will be the basis for the moiré pattern and moiré information that specifies the conditions for the moiré pattern are obtained. The extraction unit is Extract feature values ​​for each region in the aforementioned input image, The aforementioned creation unit, Based on the input image and the moiré information, a first pattern is generated. Based on the input image and the moiré information, different phase shift amounts are determined for the first pattern according to the characteristic values ​​of each region of the input image, and different phase shift amounts are determined according to the position within each region of the first pattern, and a second pattern is generated which is placed at a position superimposed on the first pattern at a predetermined distance apart. A moiré pattern is created consisting of the first pattern and the second pattern. A moiré pattern generation apparatus characterized by the following:

9. The moiré information includes information regarding the basic configuration of the first pattern and the second pattern, and gradient information. The aforementioned feature value includes at least one of the following: brightness, saturation, hue, density, transparency, lightness, chromaticity, and grayscale level of the image. The moiré pattern generation apparatus according to claim 8, characterized in that

10. A moiré display generation system according to any one of claims 1 to 7, The generation system is An information processing server and one or more client terminals are connected via a communication network. The aforementioned information processing server is Includes a moiré pattern generation device, The moiré pattern generation apparatus is The reading unit, Extraction section, Creation section, Includes, The reading unit is, The input image that will be the basis for the moiré pattern and moiré information that specifies the conditions for the moiré pattern are acquired from one or more client terminals via the communication network. The extraction unit is Extract feature values ​​for each region in the aforementioned input image, The aforementioned creation unit, Based on the input image and the moiré information, a first pattern is generated. Based on the input image and the moiré information, different phase shift amounts are determined according to the characteristic values ​​of each region of the input image and the position within each region relative to the first pattern, and a second pattern is generated which is placed at a position superimposed on the first pattern at a predetermined distance. A moiré pattern is created consisting of the first pattern and the second pattern. A moiré pattern generation system characterized by the following:

11. The moiré information includes information regarding the basic configuration of the first pattern and the second pattern, and gradient information. The aforementioned feature value includes at least one of the following: brightness, saturation, hue, density, transparency, lightness, chromaticity, and grayscale level of the image. A moiré pattern generation system according to claim 10, characterized in that

12. A method for generating a moiré display according to any one of claims 1 to 7, The aforementioned generation method is A step of generating a first pattern based on an input image and moiré information specifying the conditions for the moiré pattern, A step of determining the amount of phase variation for each region of the first pattern based on the input image and the moiré information, according to the feature values ​​of each region of the input image, and generating a second pattern that is placed at a position superimposed on the first pattern at a predetermined distance apart. A step of obtaining a moiré pattern consisting of the first pattern and the second pattern, Includes, A method for generating a moiré pattern, characterized by the features described above.

13. The moiré information includes information regarding the basic configuration of the first pattern and the second pattern, and gradient information. The aforementioned feature value includes at least one of the following: brightness, saturation, hue, density, transparency, lightness, chromaticity, and grayscale level of the image. A method for generating a moiré pattern according to claim 12, characterized in that

Images