Viewing facility evaluation device, viewing facility evaluation method, and viewing facility evaluation program

Abstract

To provide a viewing facility evaluation device capable of more accurately calculating a sight line from an audience seat to a gaze point on a stage and more accurately evaluating the ease of viewing a stage. [Solution] The viewing facility evaluation device 100 includes a tangent information calculation unit 113 that calculates a tangential sight line based on facility information. The tangential sight line is a straight line that passes through the viewpoint of a spectator seated in a seat and a point located forward of the seat and indicated by forward spatial coordinates that correspond to spatial coordinates, and is the spectator's line of sight. The viewing facility evaluation device 100 also includes a visibility point calculation unit 114 that calculates a visibility point, which is the point where the tangential sight line intersects with the gaze plane, and a visibility point determination unit 115 that compares the spatial coordinates of the visibility point with predetermined evaluation criteria to determine the ease of viewing the stage. The forward spatial coordinates are the coordinates of the point of intersection between the tangential sight line and a semicircular shape corresponding to the skull of a human body shape model of a front spectator seated in a seat located forward of the seat.

Description

[Technical Field]

[0001] The present invention relates to a sightseeing facility evaluation device, a sightseeing facility evaluation method, and a sightseeing facility evaluation program. [Background technology]

[0002] Conventionally, there is a method for determining the visibility of a stage or a sports field from the spectator's viewpoint by examining the cross-sectional shape of the seats and bleachers (hereinafter referred to as "audience seats") of viewing facilities such as theaters, arenas, and stadiums using two-dimensional drawings. For example, Patent Document 1 discloses a viewing facility evaluation system that evaluates the visibility of a stage based on a sight line, which corresponds to the spectator's line of sight. The viewing facility evaluation system disclosed in Patent Document 1 defines the sight line as a line that passes through the coordinates of the spectator's viewpoint and the coordinates assumed to be on the vertical line of the eyes of a spectator seated in the seats located at the front, and determines the visibility of the stage based on the visible point where the sight line intersects with the plane of the stage. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6895602 Summary of the Invention [Problem to be solved by the invention]

[0004] However, because the human skull is actually hemispherical, when evaluating the ease of viewing a stage using sight lines, which are based on coordinates assumed to be on the vertical line of the eyes of audience members seated in the front rows, errors can occur in comparison to the actual visibility depending on the angle of the line of sight. For example, in the evaluation of a stage using sight lines disclosed in Patent Document 1, when looking horizontally or up, the evaluation result is more favorable than the actual situation, while when looking down, the evaluation result is less favorable than the actual situation.

[0005] The present invention was made in consideration of the problems inherent in the prior art, and its object is to provide a viewing facility evaluation device that can more accurately calculate the sight line from the spectator seats to the gaze point on the stage, and more accurately evaluate the ease of viewing the stage. [Means for solving the problem]

[0006] In order to solve the above problems, an aspect of the viewing facility evaluation device of the present invention comprises: a spatial coordinate setting unit that sets spatial coordinates corresponding to a viewing facility based on design information regarding the viewing facility, which has a stage and audience seats; a facility information input unit into which facility information regarding the viewing facility in spatial coordinates is input; a tangent information calculation unit that calculates a tangent sight line, which is a straight line passing through the viewpoint of a spectator seated in the audience seats and a point located forward of the audience seats and indicated by a forward spatial coordinate corresponding to the spatial coordinate, and which is the spectator's line of sight, based on the facility information; a visible point calculation unit that calculates a visible point, which is the point where the tangent sight line intersects with a gaze plane, which is a specific vertical plane on the stage; a visible point determination unit that compares the spatial coordinates of the visible point with predetermined evaluation criteria and determines the ease of viewing the stage; and a display unit that displays the determination result determined by the visible point determination unit, wherein the forward spatial coordinates are the coordinates of the intersection between the tangent sight line and a semicircular shape corresponding to the skull of a human body shape model of a front spectator seated in an audience seat located forward of the audience seats.

[0007] Another aspect of the present invention is a viewing facility evaluation method that is executed by a computer, and it sets spatial coordinates corresponding to the viewing facility based on design information about the viewing facility, which has a stage and audience seats; facility information about the viewing facility in spatial coordinates is input; a tangential sight line, which is a straight line passing through the viewpoint of an audience member seated in the audience seat and a point located forward of the audience seat and indicated by a forward spatial coordinate corresponding to the spatial coordinate, and which is the audience's line of sight, is calculated based on the facility information; a visibility point, which is the point where the tangential sight line intersects with a gaze plane, which is a specific vertical plane on the stage; the spatial coordinate of the visibility point is compared with a predetermined evaluation criterion; the ease of viewing the stage is judged; and the judged result is displayed; the forward spatial coordinate is the coordinate of the intersection of the tangential sight line and a semicircular shape corresponding to the skull of a human body shape model of an audience member seated in a seat located forward of the audience seats.

[0008] Another aspect of the present invention is a viewing facility evaluation program that sets spatial coordinates corresponding to the viewing facility based on design information for the viewing facility, which has a stage and audience seats; facility information for the viewing facility in spatial coordinates is input; based on the facility information, calculates a tangential sight line, which is a straight line passing through the viewpoint of an audience member seated in the audience seat and a point located forward of the audience seat and indicated by a forward spatial coordinate corresponding to the spatial coordinate, and which is the audience's line of sight; calculates a visibility point, which is the point where the tangential sight line intersects with a gaze plane, which is a specific vertical plane on the stage; compares the spatial coordinates of the visibility point with predetermined evaluation criteria, judges the visibility of the stage, and displays the judgment result judged by the visibility point judgment unit, causing a computer to execute a process in which the forward spatial coordinate is the coordinate of the intersection between the tangential sight line and a semicircular shape corresponding to the skull of a human body shape model of a front audience member seated in an audience seat located forward of the audience seats. [Effects of the Invention]

[0009] According to the present disclosure, it is possible to provide a viewing facility evaluation device that can more accurately calculate the sight line from the audience seats to the gaze point on the stage, and more accurately evaluate the ease of viewing the stage. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a block diagram showing the configuration of a sightseeing facility evaluation device according to a first embodiment. [Figure 2] 1 is a block diagram showing the functional configuration of a sightseeing facility evaluation device according to a first embodiment. [Figure 3A] 1 is a plan view showing an example of a sightseeing facility to which the sightseeing facility evaluation device according to the first embodiment is applied. [Figure 3B] 1 is a plan view showing an example of a sightseeing facility to which the sightseeing facility evaluation device according to the first embodiment is applied. [Figure 3C] 1 is a plan view showing an example of a sightseeing facility to which the sightseeing facility evaluation device according to the first embodiment is applied. [Figure 4] 1 is a perspective view showing an example of a sightseeing facility to which a sightseeing facility evaluation device according to a first embodiment is applied. [Figure 5] FIG. 10 is a schematic diagram for explaining an example of a point of interest on a stage. [Figure 6A] FIG. 1 is a schematic diagram for explaining dimensions related to spectators seated in the seats. [Figure 6B] This is a schematic diagram showing the coordinates of the first floor seats in a cross-section of the viewing facility. [Figure 6C] This is a schematic diagram showing the coordinates of the second floor seats and balcony in a cross-section of the viewing facility. [Figure 7A] 1 is a diagram showing the lines of sight of spectators in n rows toward a stage in a theater to which the viewing facility evaluation device 100 according to the first embodiment is applied. FIG. [Figure 7B] 4 is a diagram for explaining the processing of a tangent information calculation unit of the sightseeing facility evaluation device according to the first embodiment. FIG. [Figure 7C] 4 is a diagram for explaining the processing of a tangent information calculation unit of the sightseeing facility evaluation device according to the first embodiment. FIG. [Figure 8A] A figure showing the difference between a sight line drawn by a general sight line drawing method and a tangential sight line calculated by the sightseeing facility evaluation device according to this embodiment. [Figure 8B]A figure showing the difference between a sight line drawn by a general sight line drawing method and a tangential sight line calculated by the sightseeing facility evaluation device according to this embodiment. [Figure 8C] A figure showing the difference between a sight line drawn by a general sight line drawing method and a tangential sight line calculated by the sightseeing facility evaluation device according to this embodiment. [Figure 8D] A figure showing the difference between a sight line drawn by a general sight line drawing method and a tangential sight line calculated by the sightseeing facility evaluation device according to this embodiment. [Figure 8E] A figure showing the difference between a sight line drawn by a general sight line drawing method and a tangential sight line calculated by the sightseeing facility evaluation device according to this embodiment. [Figure 9] 2 is a diagram showing an example of evaluation criteria in the sightseeing facility evaluation device according to the first embodiment. FIG. [Figure 10A] 3 is a diagram showing an example of a display standard in the sightseeing facility evaluation device according to the first embodiment. FIG. [Figure 10B] 3 is a diagram showing an example of a display standard in the sightseeing facility evaluation device according to the first embodiment. FIG. [Figure 11A] FIG. 3 is a diagram showing an example of an initial input screen when inputting facility information according to the first embodiment. [Figure 11B] FIG. 3 is a diagram showing an example of a cross-sectional coordinate system input screen when facility information is input according to the first embodiment. [Figure 12] FIG. 2 is a diagram showing an example of a display result of the sightseeing facility evaluation device according to the first embodiment. [Figure 13] 4 is a flowchart showing an example of processing performed by the sightseeing facility evaluation device according to the first embodiment. [Figure 14] FIG. 10 is a block diagram showing the functional configuration of a sightseeing facility evaluation device according to a second embodiment. [Figure 15] FIG. 10 is a diagram for explaining individual obstacles applied in the sightseeing facility evaluation device according to the second embodiment. [Figure 16]10 is a flowchart showing an example of processing performed by the sightseeing facility evaluation device according to the second embodiment. [Figure 17] FIG. 10 is a block diagram showing the functional configuration of a sightseeing facility evaluation device according to a third embodiment. [Figure 18] 11 is a flowchart showing an example of processing performed by the sightseeing facility evaluation device according to the third embodiment. [Figure 19] FIG. 10 is a block diagram showing the functional configuration of a sightseeing facility evaluation device according to a fourth embodiment. [Figure 20] 10 is a flowchart illustrating an example of processing performed by a sightseeing facility evaluation device according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] The following describes in detail the sightseeing facility evaluation device 100 according to this embodiment with reference to the drawings. Note that the dimensional proportions in the drawings are exaggerated for the sake of explanation and may differ from the actual proportions. Furthermore, the following describes this embodiment in more detail with examples and comparative examples, but the present embodiment is not limited to these examples.

[0012] (Overview of the viewing facility evaluation device 100) The viewing facility evaluation device 100 according to this embodiment is a system that determines and evaluates the ease of viewing a stage from the spectator seats at a viewing facility to be evaluated. The viewing facility evaluation device 100 will be described below with reference to several specific embodiments. Note that in the following embodiments, viewing facility evaluation devices 100a, 100b, 100c, and 100d will be shown, but when there is no need to distinguish between them, they will be simply referred to as "viewing facility evaluation device 100."

[0013] In this disclosure, the visible point roughly corresponds to the term "point of gaze" described in Patent Document 1, but a distinction is made between the point of gaze (Point of Height, the point at which one attempts to look) and the visible point (Clear Visible Point, the limit point at which one can reliably see).

[0014] (First embodiment) Fig. 1 is a block diagram showing the configuration of a sightseeing facility evaluation device 100 according to the first embodiment. As shown in Fig. 1, the sightseeing facility evaluation device 100 may be configured as a general computer including a control unit 110 (CPU), a storage unit 120 (memory), an input / output IF 130 (Interface), and a communication IF 140.

[0015] Each functional unit constituting the sightseeing facility evaluation device 100 is configured by a processor provided in a computer or the like executing a program in memory. The sightseeing facility evaluation device 100 may be configured by one computer or multiple computers. It is also possible to realize the functions of the sightseeing facility evaluation device 100 by linking multiple computers installed in physically separate locations.

[0016] Alternatively, the sightseeing facility evaluation device 100 may be configured such that dedicated hardware for executing each information processing function is prepared, and the information processing function is configured using a system LSI (Large Scale Integration) or the like. Alternatively, the sightseeing facility evaluation device 100 may configure a system in which multiple information processing functions are implemented using individual hardware.

[0017] The control unit 110 operates based on a program (not shown) stored in the storage unit 120, and executes each function of the sightseeing facility evaluation device 100. Note that the program is not limited to being stored in the storage unit 120, and may be stored in a ROM (not shown) or the like within the sightseeing facility evaluation device 100, for example.

[0018] As shown in FIG. 2, the storage unit 120 stores information stored in a spatial information DB 121, a facility information DB 122, and a tangent information DB 123 in the storage unit 120 as data.

[0019] Furthermore, as described above, the storage unit 120 may store programs for each function executed by the control unit 110. The information and programs stored in the storage unit 120 may be configured as physically or logically separated areas within a single storage device. Alternatively, the storage units 120 for each data may be configured to be provided in multiple physically different storage devices.

[0020] The input / output IF 130 is an interface for transmitting and receiving data between the sightseeing facility evaluation device 100 and the outside. The input / output IF 130 may also be an interface for transmitting and receiving information exchanged between the sightseeing facility evaluation device 100 and the outside. The input / output IF 130 includes, for example, an input IF and an output IF (not shown).

[0021] For example, the input IF in the input / output IF 130 has an interface function for the user to input various information, and information may be input from outside the sightseeing facility evaluation device 100. Information is input to the input IF by the user via, for example, a keyboard, mouse, touch panel, trackball, or voice recognition device connected to the sightseeing facility evaluation device 100. The input IF can also input information as a data input terminal for inputting data from an external storage device (not shown) or the like.

[0022] Furthermore, the output IF in the input / output IF 130 can display spatial information, tangent information, evaluation results, etc., which will be described later, on a display device (not shown) such as a monitor connected to the sightseeing facility evaluation device 100. The display device is, for example, a display device, a projector device, etc.

[0023] The communication IF 140 is, for example, an interface that enables mutual communication between the sightseeing facility evaluation device 100 and an external device.

[0024] (Functional configuration of the sightseeing facility evaluation device 100) Fig. 2 is a block diagram showing the functional configuration of the sightseeing facility evaluation device 100 according to this embodiment. As shown in Fig. 2, the control unit 110 of the sightseeing facility evaluation device 100 includes, as its functions, a spatial coordinate setting unit 111, a facility information input unit 112, a tangent information calculation unit 113, a visible point calculation unit 114, a visible point determination unit 115, and a display unit 116.

[0025] The spatial coordinate setting unit 111 inputs design information related to the size (dimensions) and structure of the observation facility to be evaluated, and assigns the input design information as spatial coordinates on three-dimensional axes. The design information of the observation facility to be evaluated is, for example, three-dimensional CAD (Computer Aided Design) data, BIM (Building Information Modeling) data, design drawings, etc. of the observation facility. This design information is stored in advance in the spatial information DB 121 of the storage unit 120 in the observation facility evaluation device 100. The spatial coordinate setting unit 111 obtains this design information by reading it from the storage unit 120, and assigns coordinates on three-dimensional axes.

[0026] Specifically, as shown in Fig. 3A, the spatial coordinate setting unit 111 first sets a plan view of the viewing facility as seen from above as an XY plane. In the XY plane, the spatial coordinate setting unit 111 determines a central axis 11 that is symmetrical from the stage 20 toward the audience seats 30, and determines the point where the central axis 11 intersects with the boundary between the stage 20 and the audience seats 30 as the coordinate origin 10. That is, in the XY plane, the negative side of the X axis is the side of the stage 20, and the positive side of the X axis is the side of the audience seats 30. In this specification, the audience seats and audience seats in the viewing facility are collectively referred to as audience seats 30, and individual seats in the audience seats 30 are referred to as audience seats.

[0027] Acting area 20a shown in Figure 3A is the acting area on stage 20, where plays, musical performances, etc. take place. Figure 3A is also a conceptual diagram showing first floor seats 30a on the positive side of the Y axis, and second floor seats 30b and side balcony seats 30c on the negative side of the Y axis. In an actual viewing facility, first floor seats 30a, second floor seats 30b, and side balcony seats 30c are located on both the positive and negative sides of the Y axis.

[0028] As shown in FIG. 3B, the spatial coordinate setting unit 111 defines a vertical plane passing through the central axis 11 as the XZ plane. Furthermore, the spatial coordinate setting unit 111 defines a plane perpendicular to the XY and XZ planes as the YZ plane. FIG. 3C is a cross-sectional view of the viewing facility taken along the dashed-dotted line AA in FIG. 3A, showing an example of the YZ plane. Note that FIG. 3C also shows a proscenium 20b. The proscenium is a frame-shaped wall that forms an opening in the stage 20 and separates the stage from the audience seats 30 located in the front row of the stage 20. FIG. 4 is a perspective view, shown in isometric projection, of the viewing facility whose spatial coordinates have been set by the spatial coordinate setting unit 111.

[0029] Although the example has been shown in which the spatial coordinate setting unit 111 acquires the design information of the sightseeing facility by reading it from design information previously stored in the storage unit 120 of the sightseeing facility evaluation device 100, the method of acquiring the design information is not limited to this. For example, a method may also be used in which the user inputs design information about the sightseeing facility from outside the sightseeing facility evaluation device 100 via the input / output IF 130 or the communication IF 140, and the spatial coordinate setting unit 111 acquires the design information.

[0030] The facility information input unit 112 inputs dimensions and coordinates of the stage 20 and audience seats 30 of the viewing facility to be evaluated as facility information, and stores the facility information in the facility information DB 122 of the storage unit 120. Values ​​corresponding to the coordinate space on the three-dimensional axes set by the spatial coordinate setting unit 111 are input as this facility information. The facility information is input in the facility information input unit 112, for example, by the user inputting values ​​from an initial value input screen shown in FIG. 11A or 11B. After inputting necessary values ​​on the initial value input screen shown in FIG. 11A or 11B, the user presses an input button (not shown), whereby the facility information is input into the facility information input unit 112 and stored in the facility information DB 122 of the storage unit 120. The initial value input screen is displayed on a display device (not shown) connected to the viewing facility evaluation device 100, for example, via the input / output IF 130.

[0031] Of the facility information, information relating to the stage 20 is, for example, the height St of the stage 20 and the height PrH of the proscenium 20b. Figures 4 and 7A show the height St of the stage 20 and the height PrH of the proscenium 20b in the viewing facility. The height St of the stage 20 is the height from the floor at the front of the audience seats 30 to the stage floor surface. Furthermore, the height PrH of the proscenium 20b (Procenium Height) is the height from the stage floor surface to the top end of the proscenium 20b.

[0032] The facility information input unit 112 also inputs the coordinates of a vertical plane (hereinafter referred to as the gaze plane) on the stage that is the target of the audience's line of sight. The gaze plane is a plane parallel to the YZ plane, and the dimension from the front edge of the stage in the negative direction of the X axis is set as PSx. The gaze plane corresponds to a specific vertical plane on the stage. In the first embodiment, the gaze plane is assumed to be on the central axis 11 of the XZ plane. That is, in the first embodiment, the gaze plane is Y = 0, and is a line extending vertically at X = PSx (hereinafter referred to as the stage gaze line 21). Furthermore, PSx is assumed to have a positive value in the negative direction of the X axis (leftward in FIG. 3A ) and a negative value in the positive direction of the X axis (rightward in FIG. 3A ). This is based on the idea that various dimensions and coordinates are usually set from the front edge to the back of the stage. The gaze plane can be set in stages and in layers. That is, by setting multiple gaze planes on the stage in stages according to the depth, the visibility point can be evaluated in layers.

[0033] FIG. 5 shows an example of setting the stage gaze line 21. PSx is used to clarify which point must be visible from the audience seats 30 relative to the depth of the stage 20. From seats at a low position, such as the front of the first floor, it is easy to see the higher points on the stage's side toward the audience seats 30, and visibility becomes more difficult as the position moves toward the lower depth of the stage. Conversely, from seats at the rear of the first floor or the second floor, visibility becomes more difficult as the position moves toward the lower points toward the front of the stage. In other words, the minimum value of the point that must be visible from the audience seats is input as the value of PSx. FIG. 5 shows several examples of gaze points that vary depending on the type of performance, play, or other performance. The desirable height of the gaze point is related to FIGS. 9, 10A, and 10B, which will be described later.

[0034] For example, the stage gaze 21a for a dancer 22a who is positioned from the front edge of the stage toward the back of the stage is PSx = 3000. Similarly, the stage gaze 21b for a cellist 22b is PSx = 2000. For an actor 22c who is positioned 1500 mm from the front edge of the stage, the stage gaze 21c is PSx = 1500.

[0035] Similarly, the stage gaze 21 can be determined when the front stage 20c or the orchestra pit 20d is located closer to the audience seats 30 than the stage itself. For example, the stage gaze 21d for an actor 22d who is located on the front stage 20c, which is closer to the audience seats 30 than the front edge of the stage, is PSx = -1000. Similarly, for a conductor 22e who is located in the orchestra pit 20d, the stage gaze 21e is PSx = -1500, for example.

[0036] Furthermore, the facility information input unit 112 inputs dimensions and coordinates of the seats and the spectators seated in the seats as seating information, and stores the input in the storage unit 120. Note that, like the stage information described above, the seating information is also input by the user via the initial value input screen shown in Fig. 11A.

[0037] FIG. 6A is a diagram illustrating dimensions of spectators seated in the auditorium. The dimensions shown in FIG. 6A correspond to "O," "EH," and "TH" in the basic information input area of ​​the initial value input screen shown in FIG. 11A. Horizontal distance 31b in FIG. 6A indicates the horizontal distance "O" or "Ost" (Offset) between the eyes of a seated spectator and the immediately following floor rise 31a. Vertical distance 31c in FIG. 6A indicates the eye height (EH) of a seated spectator from the floor. Vertical distance 31d in FIG. 6A indicates the distance between the eyes and the top of the head (TH). Note that the distance between the eyes and the top of the head (TH) is adjusted to include a certain margin to account for the length of hair, etc. The default value for "EH" is, for example, 1100 mm. Eye height varies depending on gender and age group. Therefore, if the height of only the target viewpoint is changed, for example, if "EH" is 1050mm, it is considered to be the height of the viewpoint at which 70% of young and middle-aged women can see the stage.

[0038] The facility information input unit 112 also inputs the horizontal position H1 of the first floor seating up to the immediately succeeding step riser 40 in the front row as seating information, and stores this in the storage unit 120. The horizontal position H1 is also input by the user via the initial value input screen shown in FIG. 11A.

[0039] The diagram shown in FIG. 6B is a cross-sectional view of audience seating 30 on central axis 11. Audience seat coordinates 41 are the coordinates of the front row of seats on the first floor. The horizontal distance 41a (horizontal position H1) entered on the initial value input screen is used for seat coordinates 41, and the coordinates are (X1, Z1) = (H1, 0). Note, however, that the value of V1 is 0. Meanwhile, the coordinates 42 of the nth row of seats on the first floor are (Xn, Zn) = (Xn-1 + Hn, Zn-1 + Vn). Here, Hn is the horizontal distance 42a between the nth row and the n-1th row. Similarly, Vn is the vertical distance 42b between the nth row and the n-1th row.

[0040] Furthermore, the facility information input unit 112 inputs the coordinates of the front row seats on the second floor (H2_1, V2_1) and the coordinates of the top of the balcony ceiling (Bx, Bz) as seating information, and stores them in the storage unit 120. The coordinates of the front row seats on the second floor and the coordinates of the top of the balcony ceiling are also input by the user via the initial value input screen.

[0041] FIG. 6C is a schematic cross-sectional view showing the second-floor seats and the edge of the balcony ceiling. Among the coordinates 51 of the front row of second-floor seats, coordinate H2_1, which indicates the horizontal position, is the horizontal distance 51a between the step riser 50 immediately behind the front row of second-floor seats and coordinate origin 10. Similarly, among the coordinates 51 of the front row of second-floor seats, coordinate V2_1, which indicates the vertical position, is the vertical distance 51b between the rearmost end of the chair in the front row of second-floor seats and coordinate origin 10. Similarly, among the coordinates 61 (Bx, Bz) of the edge of the balcony ceiling, coordinate Bx, which indicates the horizontal position, is represented by the horizontal distance 61a between the edge of the balcony ceiling and coordinate origin 10. Furthermore, among the coordinates 61 (Bx, Bz) of the edge of the balcony ceiling, coordinate Bz, which indicates the vertical position, is represented by the vertical distance 61b between the edge of the balcony ceiling and coordinate origin 10.

[0042] 7A is a diagram showing the line of sight of spectators in n rows toward the stage in a theater that is applied to the viewing facility evaluation device 100 according to this embodiment. For example, the viewing facility evaluation system disclosed in Patent Document 1 projects a straight line from the viewpoint of a specific spectator toward the stage over the heads of spectators in the front row, and evaluates the height at which the extension of that line reaches at any position on the stage.

[0043] The method of evaluating the sight line in Patent Document 1 and other documents evaluates the line of sight by passing it from the viewpoint of the observer spectator, or in the case of common conventional methods, from a point called the point of sight on the stage side to a point a certain distance (usually 100-120 mm) above on a vertical line to a position that is assumed to be the viewpoint of an spectator in the front row.

[0044] However, because the human skull is hemispherical, this method can produce errors in the actual view depending on the angle of the line of sight. Specifically, when looking horizontally or up, the results may be more favorable than the actual view, while when looking down, the results may be less favorable than the actual view.

[0045] In addition, in recent years, confirmation of sight lines using computer graphics has become common, but there are cases where verification using sight lines that pass above the viewpoints of spectators in the front rows does not necessarily match verification using computer graphics. The viewing facility evaluation device 100 according to this embodiment can improve upon these problems of conventional technology.

[0046] The tangent information calculation unit 113 calculates a tangent sight line, which is a straight line passing through the viewpoint of a spectator seated in a seat and a point located forward of the seat and indicated by forward spatial coordinates corresponding to spatial coordinates, and which is the spectator's line of sight, based on facility information. The forward spatial coordinates correspond to the coordinates of the point of contact between the tangent sight line and a semicircular shape corresponding to the skull of a human body shape model of a front spectator seated in a seat located forward of the seat. The tangent information calculation unit 113 also stores information about the calculated tangent sight line in the tangent information DB 123.

[0047] The processing of the tangent information calculation unit 113 will be described using Figures 7B and 7C. The center of the eyeball of the spectator in row n, who is the observer, is defined as point En. The virtual head center of the spectator in the front row is defined as point HDCn-1. The radius of the virtual skull is defined as HDR (Head Radius). The initial value of HDR is 90 mm. In determining the anterior-posterior position of the virtual skull center, the anterior-posterior distance between the eyebrow point and the eyeball center is assumed to be EB (Eyeball). The average value of EB varies depending on race, but for Japanese people, whose faces are less uneven, 25 mm is the initial value. In this case, the length of the line segment drawn from point En to HDCn-1 is defined as L.

[0048] Consider the point where the radius forming a right angle upward at the line segment En-HDCn-1 and point HDCn-1 intersects with the arc of the hair. This is called the preliminary point of tangency, denoted as PPT. On the other hand, when a half-line radiating from the center of the eyeball of the nth row of spectators who are observers becomes tangent to point En and the arc of the hair, the true point of tangency is denoted as POT (Point of Tangency). In this case, the line POTEn necessarily forms a right angle with the radius connecting the virtual skull center and the tangent point POT. From this geometric property, the following can be derived.

[0049] If the angle between the horizontal line (facing left in the diagram) and the line segment drawn from point En to point HDCn-1 is α (unit: rad), then the angle between the vertical line (facing upward) and the temporary tangent point PPT from HDCn-1 is equal to α. Also, if the angle between the line segment drawn from point En to the tangent point POT and the line segment drawn from point En to HDCn-1 is β (unit: rad), then the angle between the line segment drawn from HDCn-1 to the tangent point POT and the line segment drawn from HDCn-1 to the temporary tangent point PPT is equal to β. Incidentally, β is always a positive value.

[0050] When a half-line radiating from the center of the eyeball of the observer in row n is tangent to point En and the arc of the hair, that half-line becomes the overhead sightline. The angle that this vector makes with the horizontal line pointing left (=towards the stage) in the diagram is γ (unit: rad). γ is positive for a downward sightline, 0 for a horizontal sightline, and negative for an upward sightline. For an overhead sightline, the smaller the value, the worse the sightline. In this case, the following equation (1) holds true. [Number 1] γ=α-β (1)

[0051] Next, the coordinates of point HDCn-1, which is the virtual center of the skull in row n-1, are calculated. The X and Z coordinates of HDCn-1 are determined by the following equations (2) and (3), respectively. [Number 2] HDCXn-1=Xn-1-OSTn-1-EB+HDR (2) [Number 3] HDCZn-1=Zn-1+EHn-1+TH-HDR ···(3)

[0052] The X and Z coordinates of the position of point En in the nth row of the back row are determined by the following equations (4) and (5). [Number 4] EXn=Xn-OSTn= Xn-1+Hn-OSTn ···(4) [Number 5] EZn=Zn+EHn=Zn-1+Vn+ EHn (5)

[0053] Therefore, the difference from HDC to En in the X coordinate is expressed by the following equation (6) using equations (2) and (4). [Number 6] Xn-OSTn=Xn-1+Hn-OSTn, EXn-HDCXn-1=(Xn-1+Hn-OSTn)-(Xn-1-OSTn-1-EB+HDR)=Hn-OSTn+OSTn-1+EB-HDR ···(6)

[0054] Furthermore, the Z coordinate is determined by the following equation (7) based on equations (3) and (5). [Number 7] (Zn-1+Vn+EHn)-(Zn-1+EHn-1+TH-HDR) =Vn+EHn-EHn-1-TH+HDR (7)

[0055] Next, α is calculated, where the initial values ​​are TH=110 and HDR=10. The following formula (8) is determined from the above formulas (5) and (6). α (rad) is calculated from this formula (8). [Number 8] α=arctan((EZn-HDCZn-1) / (EXn-HDCXn-1)) =arctan((Vn+EHn-EHn-1-TH+HDR) / (Hn-OSTn+OSTn-1+EB-HDR)) ···(8)

[0056] Next, calculate β. If the distance between point HDCn-1, which is the virtual center of the skull in the anterior n-1th row, and point En in the posterior nth row is set to L, L is given by the following equation (9), and L can be calculated by substituting the above equations (4) and (6). [Number 9] L=((EXn-HDCXn-1)2+(EZn-HDCZn-1)2)1 / 2 ···(9)

[0057] Here, we consider the hair thickness (margin) HRT (Hair Thickness). From sinβ = (HDR + HRT) / L, β (rad) is determined by the following formula (10). [Number 10] β=arcsin((HDR+HRT) / L) ···(10)

[0058] Furthermore, γ is calculated by γ = α - β. In this way, the angle γ (rad) of the reverse sight line (meaning the opposite direction from the conventional sight line drawing method) emanating from point En toward the stage and its slope tan γ are calculated. Furthermore, the tangent information calculation unit 113 stores the calculated information in the tangent information DB 123.

[0059] Figures 8A to 8E are diagrams showing the difference between sight lines drawn using a conventional sight line drawing method and tangential sight lines calculated by the sightseeing facility evaluation device 100 according to this embodiment. In Figures 8A to 8E, the pitch between the front and back chairs is set to 900 mm, the head height difference (the difference in height between the top of the head and the center of the eyes) is set to 110 mm, and the hair thickness is set to 10 mm, for a total of 120 mm. The dashed sight lines indicate sight lines drawn using the conventional method, and the solid sight lines indicate tangential sight lines calculated by the sightseeing facility evaluation device 100 according to this embodiment.

[0060] In the case of no step shown in Figure 8A, the method of the present disclosure shows a tangent line, while the conventional method shows a line of 10.5 mm that is invisible because the head is worn. Also, in the case of a line that is visible when looking up, the conventional method judges it to be visible even when it is actually invisible.

[0061] When the step height shown in Figure 8B is 120 mm, the method of the present disclosure and the conventional method both produce horizontal lines and the lines match, so there is no difference. The results match only when the head height and floor height match.

[0062] When the step height shown in Figure 8C is 300 mm, the line is downward, but the method of the present disclosure passes lower than the conventional method, resulting in a difference of 11.6 mm. This difference increases to approximately 256 mm 20 m forward. The depression angle in this case is approximately 12 degrees, which is common at the top row of a theater.

[0063] When the step shown in Figure 8D is 540 mm, the line is downward, but the method of the present disclosure passes lower than the conventional method, resulting in a difference of 20.5 mm. This difference expands to approximately 452 mm 20 m forward. In this case, the depression angle reaches approximately 35 degrees, which is sometimes seen at the top of a theater.

[0064] When the step height shown in Figure 8E is 720 mm, the line is directed downward, but the method of the present disclosure passes lower than the conventional method, resulting in a difference of 23.4 mm. This difference increases to approximately 517 mm 20 m ahead. In this case, the depression angle reaches approximately 35 degrees, which is common at the top of a stadium or opera house. The error is approximately 1 degree in angle. This can be said to be the result of the conventional method not taking into account the shape of the human skull.

[0065] As such, it is clear that the conventional method is quite different from the actual situation when the shape of the human skull is taken into consideration.

[0066] The visible point calculation unit 114 calculates the visible point, which is the point where the tangential sight line intersects with the gaze plane, which is a specific vertical plane on the stage in three-dimensional space, and a specific gaze line in a two-dimensional plane such as a cross section.

[0067] The visibility point determination unit 115 compares the spatial coordinates of the visibility points with predetermined evaluation criteria to determine the visibility of the stage. Figure 9 shows the evaluation criteria and the visibility determination results for the visibility point PSz value. As a result of the comparison, as shown in Figure 9, when the PSz value, expressed as the difference from the stage surface, is 0 or less, the stage floor is visible, and there is no problem with the determination result. When the PSz value is greater than 0 and less than or equal to 150 mm, the feet or the entire body can be seen. When the PSz value is greater than 150 mm and less than or equal to 450 mm, the knees and above can be seen. When the PSz value is greater than 450 mm and less than or equal to 900 mm, the waist and above can be seen.

[0068] If the PSz value is greater than 900 mm and less than or equal to 1050 mm, the situation is such that the chest and above can be seen, or the movement of the upper limbs and the face can be seen. If the PSz value is greater than 1050 mm and less than or equal to 1200 mm, the situation is such that the facial expression can be seen. If the PSz value is greater than 1200 mm, the judgment result is that the view is poor. The visibility point judgment unit 115 stores the judgment result for each seat in the memory unit 120.

[0069] Display unit 116 displays the determination result determined by visible point determination unit 115. Display unit 116 displays the determination result as shown in Fig. 12 in accordance with the display criteria shown in Fig. 10A and Fig. 10B. Fig. 10A shows the display criteria based on appearance, and Fig. 10B shows the display criteria based on distance.

[0070] The leftmost figure in Fig. 12 shows the judgment results when one row is overhead, and the second from the left in Fig. 12 shows the judgment results when two rows are overhead, where the eye heights of the front and rear spectators are the same. The second from the right in Fig. 12 shows the judgment results when one row is overhead, and the rightmost figure in Fig. 12 shows the judgment results when two rows are overhead, where the eye heights of the spectators at the back are lower than those at the front.

[0071] (Outline of the processing flow of the sightseeing facility evaluation device 100) Next, a flowchart of an example of the operation of the sightseeing facility evaluation device 100 will be described with reference to Fig. 13. The processing procedure shown in Fig. 13 is executed by a CPU (Central Processing Unit), which is a processor included in a computer that executes the sightseeing facility evaluation device 100. In this case, the CPU executes the program according to a program stored in a ROM (Read Only Memory) (not shown).

[0072] Note that some or all of the following processing procedures can be executed by hardware such as a DSP (Digital Signal Processing) or an ASIC (Application Specific Integrated Circuit). However, in this embodiment, a case will be described in which the procedures are executed by a CPU according to a program stored in a ROM.

[0073] In step S1301, the spatial coordinate setting unit 111 sets spatial coordinates based on design information related to the sightseeing facility. The design information of the sightseeing facility is, for example, CAD data or BIM data of the sightseeing facility, and is stored in the spatial information DB 121 of the storage unit 120. Specifically, the spatial coordinate setting unit 111 sets the three-dimensional coordinate axes shown in the above-mentioned FIGS. 3A to 3C. Thereafter, the process proceeds to step S1302.

[0074] In step S1302, the facility information input unit 112 inputs facility information and stores it in the facility information DB 122 of the storage unit 120. Specifically, the facility information is input by the user inputting numerical values ​​on the initial value input screen shown in FIG. 11A, for example. The facility information input in step S1302 includes stage information and audience seating information. Furthermore, the stage information input in step S1302 includes, for example, the stage height St, the height PrH to the top of the proscenium, and the X coordinate (PSx) of the stage gaze line 21. Then, the process proceeds to step S1303.

[0075] In step S1303, the tangent information calculation unit 113 calculates a tangent sight line. The tangent sight line is a straight line passing through the viewpoint of a spectator seated in a seat and a point located forward of the seat and indicated by forward spatial coordinates corresponding to spatial coordinates, and corresponds to the spectator's line of sight, and is calculated based on facility information. The forward spatial coordinates correspond to the coordinates of the point of contact between the tangent sight line and a semicircular shape corresponding to the skull of a human body shape model of a front spectator seated in a seat located forward of the seat. The tangent information calculation unit 113 also stores information about the calculated tangent sight line in the tangent information DB 123. Processing then proceeds to step S1304.

[0076] In step S1304, the visibility point calculation unit 114 calculates visibility points, which are points where the tangential sight line intersects with the gaze plane, which is a specific vertical plane on the stage. Then, the process proceeds to step S1305.

[0077] In step S1305, the visibility point determination unit 115 compares the spatial coordinates of the visibility points with a predetermined evaluation standard to determine the visibility of the stage. Then, the process proceeds to step S1306.

[0078] In step S1306, the display unit 116 displays the determination result obtained by the visible point determination unit 115. After that, the process proceeds to step S1307.

[0079] In step S1307, control unit 110 determines the information input by the user, and if the user specifies "end" (step S1307: YES), the processing flow ends. On the other hand, if the user inputs an operation other than "end," such as readjusting a value (step S1307: NO), the flow returns to step S1302, and the processing from step S1302 is repeated. That is, the processing from steps S1302 to S1307 is repeated until the user specifies "end" as operation information.

[0080] As described above, the viewing facility evaluation device 100 according to the first embodiment includes a spatial coordinate setting unit 111 that sets spatial coordinates corresponding to a viewing facility based on design information about the facility, which includes a stage and seating. The viewing facility evaluation device 100 also includes a facility information input unit 112 to which facility information about the facility in spatial coordinates is input. The viewing facility evaluation device 100 also includes a tangent information calculation unit 113 that calculates a tangent sight line based on the facility information. In this embodiment, the tangent sight line is a straight line that passes through the viewpoint of a seated spectator and a point located forward of the seat and indicated by forward spatial coordinates that correspond to the spatial coordinates, and corresponds to the spectator's line of sight. The viewing facility evaluation device 100 also includes a visibility point calculation unit 114 that calculates a visibility point, which is the point where the tangent sight line intersects with a gaze plane, which is a specific vertical plane on the stage. The viewing facility evaluation device 100 also includes a visibility point determination unit 115 that compares the spatial coordinates of visibility points with predetermined evaluation criteria to determine the ease of viewing the stage. The viewing facility evaluation device 100 also includes a display unit 116 that displays the results of the determination made by the visibility point determination unit 115. The forward spatial coordinates in this embodiment are the coordinates of the point of contact between the tangential sight line and a semicircular shape corresponding to the skull of a human body shape model of a front spectator seated in a seat located forward of the audience seats.

[0081] As a result, the forward spatial coordinates used by the viewing facility evaluation device 100 are the coordinates of the point of contact between the semicircular shape corresponding to the skull of the human body shape model of the front spectator seated in the seat located forward of the audience seats and the tangent sight line. This enables the viewing facility evaluation device 100 to more accurately calculate the sight line for the visible point on the stage from the audience seats, and more accurately evaluate the ease of viewing the stage.

[0082] (Second embodiment) As described above, one specific embodiment has been described, but the above-described embodiment is merely an example. In the above-described embodiment, a tangent sight line is calculated by using a straight line as the point of contact between the spectator's viewpoint and a semicircular shape corresponding to the skull of a human body shape model of a spectator seated in the seats in front of the spectator, and a visible point where the tangent sight line intersects with the stage gaze line on the stage is calculated. Here, a description will be given of a configuration different from the first embodiment of a viewing facility evaluation device 100b according to a second embodiment, which determines the tangent sight line when there is an individual obstacle between the observer and the stage to be evaluated.

[0083] Fig. 14 is a block diagram showing the functional configuration of a sightseeing facility evaluation device 100b according to the second embodiment. As shown in Fig. 14, the sightseeing facility evaluation device 100b differs from the sightseeing facility evaluation device 100a according to the first embodiment in that it includes an individual obstacle setting unit 117a, an individual obstacle determination unit 117b, and an obstacle information DB 124.

[0084] In the viewing facility evaluation device 100b according to the second embodiment, an individual obstacle corresponds to, for example, the head of a spectator in the front row when viewed from behind the spectator seats. The head of this spectator in the front row is highly likely to obstruct the line of sight both on the lowest floor and on the balcony floor.

[0085] Individual obstacles also include handrails and waist walls at the front end of the balcony seats. For example, handrails and waist walls are handrails to prevent falls that are installed on steeply inclined floors. These handrails and waist walls may be located in front of each seat or in any other location. Examples of the latter include handrails at the front of a side aisle, waist walls at the edge of a voyage opening, and fall prevention fences in front of wheelchair seats. Other examples of line-of-sight obstacles include audio equipment and projection equipment installed at the very end of a balcony. Note that the upper frame of a proscenium, the ceiling of the audience seats, and the edge of the stage are excluded from individual obstacles and are not considered in the assessment by the viewing facility evaluation device 100b according to the second embodiment.

[0086] The processing of the sightseeing facility evaluation device 100b according to the second embodiment will be described using Fig. 15. For example, the most critical point of an individual obstacle is a handrail, one of which is HDR, with X and Z coordinates being (HDRx, HDRz). The viewpoints (eyes) of the observers in the nth row of spectators are En (Exn, Ezn), so the slope (depression angle) of the line at the edge of the obstacle, when this slope is represented by, for example, θ, is given by the following equation (11). [Number 11] tanθ=(Ezn-HDRz) / (Exn-HDRx) ···(11)

[0087] If the depression angle tanθ is greater than or equal to tanγ, the individual obstacle will be located below the overhead sight line and will not have any effect, but if it is less than tanγ, it will be located above the overhead sight line and will further worsen the sight line. Therefore, it is possible to make a judgment simply by comparing the magnitude of the values.

[0088] Based on the design information, the individual obstacle setting unit 117a sets the coordinates of the edges of obstacles that may be located above the overhead tangent sight line. If an obstacle has a polygonal or curved surface, multiple points can be set. HDR' in Figure 15 shows one such example.

[0089] An obstacle set in the individual obstacle setting unit 117a is considered to be a target of determination only if its X coordinate is smaller than that of the observer, that is, only if it is on the stage side.

[0090] The individual obstacle determination unit 117b calculates depression angles tan θ corresponding to all obstacles relative to the viewpoints of spectators in all rows. The individual obstacle determination unit 117b also stores the calculation results in the obstacle information DB 124. When an obstacle has a polygonal or curved surface, the depression angle tan θ that is most critical, i.e., the smallest, for the observer in each row is stored. When there are a maximum of m individual obstacles on a certain cross section, n × m tan θ values ​​are stored by iterative processing for the maximum number n of rows. The straight line connecting the observer's viewpoint and the coordinates of the obstacle's edge corresponds to the obstacle sight line.

[0091] That is, the individual obstacle determination unit 117b calculates the obstacle depression angle corresponding to all obstacles with respect to the eyes of the audience in all rows, and if the obstacle depression angle is smaller than the depression angle of the tangent sight line, it determines that the stage visibility is poor (deteriorated) due to the obstacle. Note that the obstacle depression angle corresponds to depression angle tan θ. The depression angle of the tangent sight line corresponds to tan γ.

[0092] Furthermore, since the individual obstacle that is most unfavorable to the viewpoint of the spectators in a particular row has the smallest depression angle tanθ, the individual obstacle determination unit 117b calculates MIN(tanθ), which is the smallest value for any n rows, and stores the result in the obstacle information DB 124.

[0093] Fig. 16 is a flowchart showing an example of the processing of the sightseeing facility evaluation device 100b according to the second embodiment. Note that the description of the same processing as the processing of the sightseeing facility evaluation device 100a according to the first embodiment shown in Fig. 13 will be omitted.

[0094] The process of step S1601 is the same as the process of step S1301 shown in FIG. 13, and therefore a description thereof will be omitted here.

[0095] In step S1602, the individual obstacle setting unit 117a sets the coordinates of the edges of obstacles that may be located above the tangent sight line among the shapes of obstacles installed in the observation facility based on the design information. Then, the process proceeds to step S1603.

[0096] The processing in steps S1603 to S1605 is the same as the processing in steps S1302 to S1304 shown in FIG. 13, and therefore a description thereof will be omitted here.

[0097] In step S1606, the visibility point determination unit 115 compares the spatial coordinates of the visibility points with a predetermined evaluation standard to determine the visibility of the stage. Also in step S1606, the individual obstacle determination unit 117b calculates the obstacle depression angle corresponding to the obstacle with respect to the viewpoint of the audience in all rows, and if the obstacle depression angle is smaller than the depression angle of the tangent sight line, it determines that the visibility of the stage is poor due to the obstacle. Then, processing proceeds to step S1607.

[0098] The processing in steps S1607 and S1608 is the same as the processing in steps S1306 and S1307 shown in FIG. 13, and therefore a description thereof will be omitted here.

[0099] As described above, the viewing facility evaluation device 100b according to the second embodiment further includes an individual obstacle setting unit 117a that sets, based on design information, the coordinates of the edges of obstacles that may be located above the tangent sight line among the shapes of obstacles installed in the viewing facility.The viewing facility evaluation device 100b further includes an individual obstacle determination unit 117b that calculates the obstacle depression angle corresponding to the obstacle with respect to the viewpoints of spectators in all rows, and determines that the stage visibility is poor due to the obstacle if the obstacle depression angle is smaller than the depression angle of the tangent sight line.

[0100] With this configuration, the viewing facility evaluation device 100b calculates the obstacle depression angle corresponding to the obstacle, and if the obstacle depression angle is smaller than the depression angle of the tangent sight line, it determines that the stage visibility is poor (deteriorated) due to the obstacle. This enables the viewing facility evaluation device 100b to evaluate the stage visibility taking into account not only the spectators in the front rows but also the obstacles.

[0101] (Third embodiment) Next, a third embodiment will be described. In the following description, when the same reference numerals as those in the first and / or second embodiment are used, they indicate the same configuration as those in the first and / or second embodiment, and reference will be made to the preceding description unless otherwise specified. Hereinafter, the configuration of the sightseeing facility evaluation device 100c according to the third embodiment that differs from that of the first and / or second embodiment will be described.

[0102] Fig. 17 is a block diagram showing the functional configuration of a sightseeing facility evaluation device 100c according to the third embodiment. As shown in Fig. 17, the sightseeing facility evaluation device 100c differs from the sightseeing facility evaluation device 100a according to the first embodiment in that it includes a high stage determination unit 118.

[0103] If the stage floor is higher than the point of view of the person making the measurements, the space on the stage below the sight line that passes through the leading edge of the stage (called the stage edge) will not be visible, but there may be cases where this needs to be verified numerically.

[0104] For example, in traditional performing arts such as Kabuki, a wooden platform called a shosakudai covers most of the stage, or there is a tatami room at the back of the stage that is several steps higher than the stage. Also, in musicals and other performances, a platform several tens of centimeters thick called a deck is sometimes laid across the entire stage. In arenas and other venues, the stage height can be raised from around 2 meters to over 5 meters to improve visibility from the flat-floored seating area.

[0105] In either case, the edge of the front of the stage becomes critical, and the lower parts of people at the back of the stage may not be visible from the audience's viewpoint. In such a situation, the viewing facility evaluation device 100c according to the third embodiment is equipped with a high stage determination unit 118 to predict the visible range and verify it numerically.

[0106] First, let us assume that the stage height has already been set in the spatial coordinate setting unit 111. The stage height determination unit 118 simply compares the stage height (ST) with the height (Ezn) of the audience's viewpoint in a specific row, and runs a pre-created program only if the stage height is high. The program uses an extremely simple formula to determine the height of the intersection of the viewpoint and the line extending to the edge of the stage, on the line of sight. The calculated result is sent to the visible point calculation unit 114, where it replaces the resulting value.

[0107] Specifically, the high stage determination unit 118 determines the height between the stage floor and the audience's viewpoint. Furthermore, if the high stage determination unit 118 determines that the stage floor is higher than the audience's viewpoint, the visible point determination unit 115 determines that the space on the stage below the line connecting the stage edge, which is the tip of the stage, and the viewpoint is not visible.

[0108] Fig. 18 is a flowchart showing an example of the processing of the sightseeing facility evaluation device 100c according to the third embodiment. Note that the description of the same processing as the processing of the sightseeing facility evaluation device 100a according to the first embodiment shown in Fig. 13 will be omitted.

[0109] The process of step S1801 is the same as the process of step S1301 shown in FIG. 13, and therefore a description thereof will be omitted here.

[0110] In step S1802, the stage height determination unit 118 determines the height between the stage floor and the audience's viewpoint, after which the process proceeds to step S1803.

[0111] The processing in steps S1803 to S1805 is the same as the processing in steps S1302 to S1304 shown in FIG. 13, and therefore a description thereof will be omitted here.

[0112] In step S1806, the visibility point determination unit 115 compares the spatial coordinates of the visibility points with predetermined evaluation criteria to determine the visibility of the stage. If the high stage determination unit 118 determines that the stage floor is higher than the audience's viewpoint, the visibility point determination unit 115 determines that the space on the stage below the line connecting the stage edge, which is the tip of the stage, and the viewpoint is not visible. Then, processing proceeds to step S1807.

[0113] The processing in steps S1807 and S1808 is the same as the processing in steps S1306 and S1307 shown in FIG. 13, and therefore a description thereof will be omitted here.

[0114] As described above, the viewing facility evaluation device 100c according to the third embodiment further includes a high stage determination unit 118 that determines the height between the stage floor and the audience's viewpoint. If the high stage determination unit 118 determines that the stage floor is higher than the audience's viewpoint, the visible point determination unit 115 determines that the space on the stage that is below the line connecting the stage edge, which is the tip of the stage, and the audience's viewpoint is not visible.

[0115] With this configuration, the viewing facility evaluation device 100c determines the height of the stage floor and the height of the audience's viewpoint in the high stage determination unit 118. Furthermore, if the viewing facility evaluation device 100c determines that the stage floor is higher than the audience's viewpoint, the visible point determination unit 115 determines that the space on the stage below the line connecting the stage edge, which is the leading edge of the stage, and the audience's viewpoint is not visible. This enables the viewing facility evaluation device 100c to more accurately verify the visible range when the stage floor is higher than the audience's viewpoint.

[0116] (Fourth embodiment) Next, a fourth embodiment will be described. In the following description, when the same reference numerals as those in the first to third embodiments are used, they indicate the same configuration as those in the first to third embodiments, and unless otherwise specified, the preceding description will be referred to. Below, the configuration of the sightseeing facility evaluation device 100d according to the fourth embodiment that differs from that of the first to third embodiments will be described.

[0117] Fig. 19 is a block diagram showing the functional configuration of a sightseeing facility evaluation device 100d according to Embodiment 4. As shown in Fig. 19, the sightseeing facility evaluation device 100d differs from the sightseeing facility evaluation device 100b according to Embodiment 2 in that it includes a tilt determination unit 119.

[0118] For example, for spectators in the front row of each floor, there is no row in front of them, so their view will not be blocked by the heads of spectators in the front row. Therefore, let's imagine a case where the stage, etc. is lower than the floor of the spectator seats on the lowest floor of a stage or stadium. Generally, the optimal human field of vision when watching a performance is within 30 degrees upward and 45 degrees downward, and the viewing facility evaluation device 100d cuts off any range outside of this range as being outside the visible range.

[0119] Another reason for cutting the lower part is that it is generally thought that if the angle of view is more than 45 degrees, it is undesirable because many audience members feel a fear of heights. Normally, there is a floor on the stage, so you cannot see what is below, but depending on the production, there may be holes in the stage or you may be able to see into the abyss, so conceptually it is acceptable for the visibility point to be negative.

[0120] However, in the front row of the balcony level, rather than the lowest floor, the handrail, which is an individual obstacle, is often the critical obstacle in the downward field of view.Since there is no particular problem in the upward field of view, the observation facility evaluation device 100d does not consider the upward field of view as a target for evaluation.

[0121] Specifically, when a spectator is seated in the front row of the seats, the tilt determination unit 119 determines the range excluding the range below 45 degrees downward from the viewpoint as the visible range. Furthermore, the visible point determination unit 115 determines the ease of viewing the stage within the visible range determined by the tilt determination unit 119 when the spectator is seated in the front row of the seats.

[0122] As a result, the viewing facility evaluation device 100d according to the fourth embodiment can more accurately determine the visibility of the stage even when the audience is seated in the front row of the auditorium.

[0123] (Other embodiments) Although the embodiments have been described in detail with reference to the drawings, the present embodiments are not limited to the contents described in the above embodiments. Furthermore, the components described above include those that can be easily imagined by a person skilled in the art and those that are substantially the same. Furthermore, the configurations described above can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the configurations can be made without departing from the spirit of the embodiments.

[0124] The above-mentioned sightseeing facility evaluation device 100b is equipped with an individual obstacle setting unit 117a and an individual obstacle determination unit 117b, and calculates the tan θ corresponding to the obstacle for the viewpoint of the spectators in all rows, and the determination results are stored in the obstacle information DB 124. Furthermore, since the individual obstacle that is the most disadvantageous obstacle among them has the smallest tan θ, the smallest value MIN(tan θ) for any n rows is calculated and stored in the obstacle information DB 124.

[0125] For example, in the above-mentioned state, the magnitude relationship between the angle γ (rad) or its inclination tan γ of the reverse sight line determined by the actual dimensions of the step, chairs, and spectators' bodies, and the angle θ (rad) or its inclination tan θ of the most unfavorable line among the individual obstacles is not determined.

[0126] Therefore, a configuration may be used in which the sequence of depths (X direction) of the stepped floor, which is the main cross section of the spectator seats, and the sequence of steps (Z direction) are determined and decided, and then handrails and other parts corresponding to the partial details are individually designed.

[0127] For example, an "obstacle determination switch" may be provided on the user's input screen, and a procedure may be provided that can turn the following functions on and off: That is, the obstacle determination switch switches on and off obstacles in the design information. (1) In the OFF state, the result of the determination by the visible point determining unit 115 is based on the slope tan γ. (2) In the ON state, the result determined by the visible point determining unit 115 is a comparison of the inclination tan γ and the inclination tan θ due to the individual obstacle, and the less favorable one is set and determined.

[0128] When this "obstacle detection switch" is turned on, obstacles caused by handrails are taken into account, so if the detection result is worse than when it is off, it makes it easier for the designer to determine that there is a problem with the local details rather than the overall cross section.

[0129] Furthermore, as the design is scrutinized and revised (brushed up), the results will no longer change whether the "obstacle detection switch" is on or off. Designers can proceed with the design of the theater with this as their goal. If the results worsen when the "obstacle detection switch" is turned on, the cause can be found by referring to the "obstacle information DB 124," or by returning to the drawing information and looking at the cross-section.

[0130] This function enables verification that is often overlooked even in cross-sectional views and CG. If the position of a shape is set incorrectly in CG, the result will change, and if overlooked, it can cause design defects. From this perspective, numerical verification is considered important as a way to prevent human error.

[0131] Fig. 20 is a flowchart showing an example of the processing of the sightseeing facility evaluation device 100 according to another embodiment. Note that a description of the same processing as the processing of the sightseeing facility evaluation device 100b according to the second embodiment shown in Fig. 16 will be omitted.

[0132] The processing in steps S2001 to S2004 is the same as the processing in steps S1601 to S1604 shown in FIG. 16, and therefore a description thereof will be omitted here.

[0133] In step S2005, the control unit 110 determines whether the obstacle switch has been turned on by a user input. If the control unit 110 determines in step S2005 that the obstacle switch is on, the process proceeds to step S2006. On the other hand, if the control unit 110 determines in step S2005 that the obstacle switch is off, the process proceeds to step S2007.

[0134] In step S2006, the visibility point calculation unit 114 compares the slope tan γ of the tangential sight line with the slope tan θ of the obstacle sight line due to an individual obstacle. The visibility point calculation unit 114 also calculates the visibility point, which is the point where the sight line with the smaller slope intersects with the gaze plane, which is a specific vertical plane on the stage. Then, the process proceeds to step S2008.

[0135] In step S2007, a visible point, which is the point where the tangential sight line intersects with the fixation plane, which is a specific vertical plane on the stage, is calculated. Then, the process proceeds to step S2008.

[0136] The processing in steps S2008 to S2010 is the same as the processing in steps S1606 to S1608 shown in FIG. 16, and therefore a description thereof will be omitted here.

[0137] As described above, the sightseeing facility evaluation device 100 according to another embodiment further includes an obstacle determination switch that switches on and off obstacles in the design information. This configuration allows the user of the sightseeing facility evaluation device 100d to easily turn obstacles on and off. This allows the user of the sightseeing facility evaluation device 100d to efficiently scrutinize and revise the design content.

[0138] Furthermore, when the display unit 116 displays the distance from a spectator's viewpoint to the front edge of the stage (basically the center) or the central area of ​​the play, it may express this with a color gradation and improve visibility by comparing it with a bar scale based on a pre-created color chart. For example, the color chart and bar scale may be as shown in Figures 10A and 10B. This allows the viewing facility evaluation device 100 to visually recognize the evaluation results even if the spectator is not a designer.

[0139] The scope of this embodiment includes a computer program (sightseeing facility evaluation program) that causes a computer to execute the processing (sightseeing facility evaluation method) of the sightseeing facility evaluation device 100, and a computer-readable recording medium on which the program is recorded. Any type of computer-readable recording medium may be used. Furthermore, the computer program is not limited to being recorded on the recording medium described above, and may be transmitted via a telecommunications line, a wireless or wired communication line, a network such as the Internet, or the like.

[0140] (Addendum) The above description of the embodiments discloses the following techniques.

[0141] (Technology 1) A spatial coordinate setting unit that sets spatial coordinates corresponding to an observation facility having a stage and audience seats based on design information about the observation facility; a facility information input unit to which facility information regarding the viewing facility at the spatial coordinates is input; a tangent information calculation unit that calculates a tangent sight line, which is a line that passes through the viewpoint of a spectator seated in the seat and a point that is located forward of the seat where the spectator is seated and is indicated by a forward spatial coordinate that corresponds to the spatial coordinate, based on the facility information; and a visible point calculation unit that calculates a visible point, which is a point where the tangential sight line intersects with a gaze plane, which is a specific vertical plane on the stage; a visibility point determination unit that compares the spatial coordinates of the visibility points with a predetermined evaluation standard to determine the visibility of the stage; a display unit that displays the determination result determined by the visible point determination unit, The viewing facility evaluation device, wherein the forward spatial coordinates are the coordinates of the point of contact between the semicircular shape corresponding to the skull of a human body shape model of a front spectator seated in the seat located forward of the seat and the tangent sight line.

[0142] With this configuration, the forward spatial coordinates used by the viewing facility evaluation device 100 are the coordinates of the point of contact between the tangent sight line and a semicircular shape corresponding to the skull of a human body shape model of a front spectator seated in a seat located forward of the audience seats. This enables the viewing facility evaluation device 100 to more accurately calculate the sight line for a visible point on the stage from the audience seats, and more accurately evaluate the ease of viewing the stage.

[0143] (Technology 2) An individual obstacle setting unit that sets the coordinates of the edges of obstacles that may be located above the tangent sight line based on the design information, among the shapes of obstacles installed in the observation facility; an individual obstacle determination unit that calculates an obstacle depression angle corresponding to the obstacle with respect to the viewpoint of the spectators in all rows, and determines that the stage visibility is poor due to the obstacle if the obstacle depression angle is smaller than the depression angle of the tangent sight line; The sightseeing facility evaluation device according to technique 1 further comprises:

[0144] With this configuration, the viewing facility evaluation device 100b calculates the obstacle depression angle corresponding to the obstacle, and if the obstacle depression angle is smaller than the depression angle of the tangent sight line, it determines that the stage visibility is poor due to the obstacle. This enables the viewing facility evaluation device 100b to evaluate the stage visibility taking into account not only the spectators in the front rows but also the obstacles.

[0145] (Technology 3) A stage height determination unit is further provided to determine the height between the stage floor of the stage and the viewpoint of the audience, The viewing facility evaluation device described in Technology 1 or 2, wherein if the high stage determination unit determines that the stage floor is higher than the spectator's viewpoint, the visibility point determination unit determines that the space on the stage that is below the straight line connecting the stage edge, which is the tip of the stage, and the spectator's viewpoint is not visible.

[0146] With this configuration, the viewing facility evaluation device 100c determines the height of the stage floor and the height of the audience's viewpoint in the high stage determination unit 118. Furthermore, if the viewing facility evaluation device 100c determines that the stage floor is higher than the audience's viewpoint, the visible point determination unit 115 determines that the space on the stage below the line connecting the stage edge, which is the leading edge of the stage, and the audience's viewpoint is not visible. This enables the viewing facility evaluation device 100c to more accurately verify the visible range when the stage floor is higher than the audience's viewpoint.

[0147] (Technology 4) When the spectators are seated in the front row of the seats, a tilt determination unit is further provided that determines the range excluding the range below 45 degrees downward from the viewpoint as the visible range, The viewing facility evaluation device described in any one of techniques 1 to 3, wherein the visibility point determination unit determines the visibility of the stage within the visibility range determined by the tilt determination unit when the spectator is seated in the front row of the seats.

[0148] With this configuration, the viewing facility evaluation device 100d can more accurately determine the ease of viewing the stage even when the audience is seated in the front row of the auditorium.

[0149] (Technology 5) The sightseeing facility evaluation device according to Technology 2, further comprising an obstacle determination switch that switches on and off the obstacle in the design information.

[0150] This configuration allows the user of the sightseeing facility evaluation device 100d to easily turn on and off obstacles, thereby enabling the user of the sightseeing facility evaluation device 100d to efficiently inspect and modify the design details.

[0151] (Technology 6) A viewing facility evaluation device described in any one of technologies 1 to 5, wherein the display unit, when displaying the distance from the viewpoint to the tip of the stage or the central area of ​​the play, displays the distance using a color gradation corresponding to the distance.

[0152] With this configuration, when the display unit 116 of the sightseeing facility evaluation device 100 displays the distance from the viewpoint of one spectator to the end of the stage, it expresses it as a color gradation and improves visibility by comparing it with a bar scale based on a pre-created color chart. This makes it possible for even non-designers to visually recognize the evaluation results of the sightseeing facility evaluation device 100.

[0153] (Technology 7) A viewing facility evaluation method executed by a computer, Based on design information relating to an observation facility having a stage and seating, spatial coordinates corresponding to the observation facility are set; Facility information regarding the viewing facility at the spatial coordinates is input, calculating a tangential sight line, which is a line passing through the viewpoint of the spectator seated in the seat and a point located forward of the seat where the spectator is seated and indicated by a forward spatial coordinate corresponding to the spatial coordinate, and which is the line of sight of the spectator, based on the facility information; Calculating a visible point, which is a point where the tangential sight line intersects with a gaze plane, which is a specific vertical plane on the stage; comparing the spatial coordinates of the visibility points with a predetermined evaluation standard to determine the visibility of the stage; The judged result is displayed. A viewing facility evaluation method in which the forward spatial coordinates are the coordinates of the point of contact between the tangent sight line and a semicircular shape corresponding to the skull of a human body shape model of a forward spectator seated in the seat located forward of the seat.

[0154] With this configuration, the forward spatial coordinates used in the viewing facility evaluation method are the coordinates of the point of contact between the semicircular shape corresponding to the skull of the human body shape model of a front spectator seated in a seat located forward of the audience seats and the tangent sight line. This enables the viewing facility evaluation method to more accurately calculate the sight line for visible points on the stage from the audience seats, and more accurately evaluate the ease of viewing the stage.

[0155] (Technology 8) Based on design information about an observation facility equipped with a stage and seating, spatial coordinates corresponding to the observation facility are set; Facility information regarding the viewing facility at the spatial coordinates is input, calculating a tangential sight line, which is a line passing through the viewpoint of the spectator seated in the seat and a point located forward of the seat where the spectator is seated and indicated by a forward spatial coordinate corresponding to the spatial coordinate, and which is the line of sight of the spectator, based on the facility information; Calculating a visible point, which is a point where the tangential sight line intersects with a gaze plane, which is a specific vertical plane on the stage; comparing the spatial coordinates of the visibility points with a predetermined evaluation standard to determine the visibility of the stage; causing a computer to execute a process for displaying the determined determination result; A viewing facility evaluation program in which the forward spatial coordinates are the coordinates of the point of contact between the semicircular shape corresponding to the skull of a human body shape model of a front spectator seated in the seat located forward of the seat and the tangent sight line.

[0156] With this configuration, the forward spatial coordinates used in the viewing facility evaluation program are the coordinates of the point of contact between the semicircular shape corresponding to the skull of the human body shape model of a front spectator seated in a seat located forward of the audience seats and the tangent sight line. This enables the viewing facility evaluation program to more accurately calculate the sight line for visible points on the stage from the audience seats, and more accurately evaluate the ease of viewing the stage.

[0157] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment. [Explanation of symbols]

[0158] 100, 100a, 100b, 100c, 100d Viewing facility evaluation device 110 control section 111 Spatial coordinate setting section 112 Facility information input section 113 Tangent information calculation section 114 Visibility point calculation unit 115 Visibility point determination unit 116 Display section 117a Individual obstacle setting section 117b Individual obstacle detection unit 118 High Stage Judgment Club 119 Tilt determination unit 120 Storage section 121 Spatial information DB 122 Facility Information DB 123 Tangent information DB 124 Obstacle Information DB 130 Input / Output Interface 140 Communication Interface

Claims

1. a spatial coordinate setting unit that sets spatial coordinates corresponding to an observation facility having a stage and audience seats based on design information relating to the observation facility; a facility information input unit to which facility information regarding the viewing facility at the spatial coordinates is input; a tangent information calculation unit that calculates a tangent sight line, which is a line that passes through the viewpoint of a spectator seated in the seat and a point that is located forward of the seat where the spectator is seated and is indicated by a forward spatial coordinate that corresponds to the spatial coordinate, based on the facility information; and a visible point calculation unit that calculates a visible point, which is a point where the tangential sight line intersects with a gaze plane, which is a specific vertical plane on the stage; a visibility point determination unit that compares the spatial coordinates of the visibility points with a predetermined evaluation standard to determine the visibility of the stage; a display unit that displays the determination result determined by the visible point determination unit, the forward space coordinates are coordinates of a point of contact between the tangential sight line and a semicircular shape having a radius of a predetermined length from the center of a virtual skull corresponding to the skull of a human body shape model of a front spectator seated in the seat located forward of the seat, The spatial coordinates of the center of the virtual skull are different from the spatial coordinates of the eyeballs of the front spectators.

2. an individual obstacle setting unit that sets, based on the design information, coordinates of edges of obstacles that may be located above the tangent sight line, among the shapes of obstacles provided in the observation facility; an individual obstacle determination unit that calculates an obstacle depression angle corresponding to the obstacle with respect to the viewpoint of the spectators in all rows, and determines that the stage visibility is poor due to the obstacle if the obstacle depression angle is smaller than the depression angle of the tangent sight line; The viewing facility evaluation device according to claim 1 , further comprising:

3. a stage height determination unit for determining the height between the stage floor of the stage and the viewpoint of the audience; 2. The viewing facility evaluation device according to claim 1, wherein the visibility point determination unit determines that the space on the stage that is below the straight line connecting the stage edge, which is the tip of the stage, and the spectator's viewpoint is not visible when the high stage determination unit determines that the stage floor is higher than the spectator's viewpoint.

4. a tilt determination unit that determines, when the spectators are seated in the front row of the seats, a range excluding a range below 45 degrees downward from the viewpoint as a visible range, 2. The viewing facility evaluation device according to claim 1, wherein the visibility point determination unit determines the visibility of the stage within the visibility range determined by the tilt determination unit when the spectator is seated in the front row of the seats.

5. The sightseeing facility evaluation device according to claim 2 , further comprising an obstacle determination switch that switches on and off the obstacle in the design information.

6. 6. The viewing facility evaluation device according to claim 1, wherein the display unit, when displaying the distance from the viewpoint to the tip of the stage or the central area of ​​the play, displays the distance using a color gradation corresponding to the distance.

7. A computer-implemented method for evaluating sightseeing facilities, Based on design information relating to an observation facility having a stage and seating, spatial coordinates corresponding to the observation facility are set; Facility information regarding the viewing facility at the spatial coordinates is input, calculating a tangential sight line, which is a line passing through the viewpoint of the spectator seated in the seat and a point located forward of the seat where the spectator is seated and indicated by a forward spatial coordinate corresponding to the spatial coordinate, and which is the line of sight of the spectator, based on the facility information; Calculating a visible point, which is a point where the tangential sight line intersects with a gaze plane, which is a specific vertical plane on the stage; comparing the spatial coordinates of the visibility points with a predetermined evaluation standard to determine the visibility of the stage; The judged result is displayed. the forward space coordinates are coordinates of a point of contact between the tangential sight line and a semicircular shape having a radius of a predetermined length from the center of a virtual skull corresponding to the skull of a human body shape model of a front spectator seated in the seat located forward of the seat, A viewing facility evaluation method, wherein the spatial coordinates of the center of the virtual skull are different from the spatial coordinates of the eyeballs of the front spectators.

8. Based on design information relating to an observation facility having a stage and seating, spatial coordinates corresponding to the observation facility are set; Facility information regarding the viewing facility at the spatial coordinates is input, calculating a tangential sight line, which is a line passing through the viewpoint of the spectator seated in the seat and a point located forward of the seat where the spectator is seated and indicated by a forward spatial coordinate corresponding to the spatial coordinate, and which is the line of sight of the spectator, based on the facility information; Calculating a visible point, which is a point where the tangential sight line intersects with a gaze plane, which is a specific vertical plane on the stage; comparing the spatial coordinates of the visibility points with a predetermined evaluation standard to determine the visibility of the stage; causing a computer to execute a process for displaying the determined determination result; the forward space coordinates are coordinates of a point of contact between the tangential sight line and a semicircular shape having a radius of a predetermined length from the center of a virtual skull corresponding to the skull of a human body shape model of a front spectator seated in the seat located forward of the seat, The spatial coordinates of the center of the virtual skull are different from the spatial coordinates of the eyeballs of the front spectators.

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