JP2019185938A - Control device, lighting system, control method, and program - Google Patents

Abstract

To improve accuracy in a direction of lighting by an irradiation device.SOLUTION: A control device for controlling a lighting device comprises a distance calculation unit, an angle calculation unit, and a transmission unit. Based on augmented reality information imparted to an image obtained by capturing images of the lighting device and a lighting object, the distance calculation unit calculates distances between each of the lighting device, the lighting object, and a user in a horizontal plane. Based on each of the calculated distances, the angle calculation unit calculates a rotation angle of the lighting device in a horizontal direction. The transmission unit transmits information on the calculated rotation angle to the lighting device.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a control device, a lighting system, a control method, and a program.

  Conventionally, there has been known a control device that calculates a distance between a lighting device and a lighting target based on augmented reality information (see, for example, Patent Document 1).

Special table 2015-505136 gazette

  However, the above technique does not consider the distance between the user based on the augmented reality information, the lighting device, and the lighting target. Therefore, there is room for improvement in terms of improving the accuracy of the illumination direction of the illumination device.

  This invention makes the above an example of a subject, and it aims at providing the control apparatus, the illumination system, the control method, and program which improve the precision of the illumination direction of an irradiation apparatus.

  The control apparatus which concerns on 1 aspect of this invention controls an illuminating device, and is provided with a distance calculation part, an angle calculation part, and a transmission part. The distance calculation unit calculates each distance between the lighting device, the lighting target, and the user on the horizontal plane based on the augmented reality information given to the image obtained by photographing the lighting device and the lighting target. The angle calculation unit calculates the rotation angle of the lighting device in the horizontal direction based on the calculated distances. A transmission part transmits the information regarding the calculated rotation angle to an illuminating device.

  According to one embodiment of the present invention, it is possible to provide a control device, an illumination system, a control method, and a program that improve the accuracy of the illumination direction of the irradiation device.

FIG. 1 is a schematic configuration diagram of an illumination system according to the embodiment. FIG. 2 is a block diagram showing the control device. FIG. 3 is a diagram illustrating the positional relationship between the illumination device, the illumination target, and the user. FIG. 4 is a diagram illustrating the lighting device, the lighting target, and the position of the user on the floor surface. FIG. 5 is a flowchart showing the irradiation control process according to the present embodiment. FIG. 6 is a diagram illustrating a positional relationship between the lighting device, the lighting target, and the user in the modification. FIG. 7 is a diagram illustrating a positional relationship between the lighting device, the lighting target, and the user in the modification. FIG. 8 is a diagram illustrating a positional relationship between the lighting device, the lighting target, and the user in the modified example.

  Hereinafter, a control device, a lighting system, a control method, and a program according to embodiments will be described with reference to the drawings. In each drawing referred to in the following description, the dimensional relationship and ratio of each element may be different from the actual one. Also, there are cases in which parts having different dimensional relationships and ratios are included between the drawings. Moreover, in each drawing, the same code | symbol is attached | subjected to the component which plays the same role.

  An illumination system 1 according to an embodiment will be described with reference to FIG. Drawing 1 is a schematic structure figure of lighting system 1 concerning an embodiment.

  The lighting system 1 includes a lighting device 2 and a control device 3. The illumination system 1 irradiates light from the illumination device 2 toward the illumination target 4.

  The illuminating device 2 is attached to a ceiling, for example, and can change an irradiation direction by an actuator (not shown) such as a motor. The illumination device 2 changes the illumination direction by changing the tilt angle ψ and the pan angle θ. The tilt angle ψ is a rotation angle (irradiation angle) of the illumination device 2 in the vertical direction parallel to the vertical direction. The pan angle θ is a rotation angle (irradiation angle) of the illumination device 2 in the horizontal direction.

  In addition, the illumination device 2 changes the irradiation range by changing the light distribution angle (zoom) φ. When the control signal is transmitted from the control device 3 by the operation of the user U, the illumination device 2 receives the control signal, changes the irradiation direction and the irradiation range based on the control signal, and irradiates the illumination target 4 with light. To do.

  Next, the control device 3 will be described with reference to FIG. FIG. 2 is a block diagram showing the control device 3. The control device 3 is a terminal device such as a smart phone or a tablet, for example, and is a controller that controls the illumination direction and illumination range of the illumination device 2.

  The control device 3 includes a communication unit 10, an imaging unit 11, a display unit 12, a storage unit 13, and a control unit 14.

  The communication unit 10 is realized by a network interface card that performs wireless communication according to a standard such as WiFi (registered trademark) or Bluetooth (registered trademark), for example. The communication unit 10 transmits a control signal for controlling the lighting device 2 to the lighting device 2. The communication unit 10 constitutes a transmission unit.

  The imaging unit 11 is a camera having an imaging element such as a complementary metal-oxide-semiconductor (CMOS) sensor or a charged-coupled devices (CCD) sensor. The imaging unit 11 is a camera that can acquire distance information. For example, the imaging unit 11 is a dual camera.

  Note that the imaging unit 11 may be a monocular camera. In this case, for example, the control device 3 calculates the distance based on images taken from different viewpoints. The control device 3 calculates the distance using a distance estimation algorithm (for example, DfAD (Depth from Asymmetric Defocus) technique).

  The display unit 12 is, for example, a liquid crystal display or an organic EL (Electro Luminescence) display, and displays an image captured by the imaging unit 11. Further, the display unit 12 displays operation buttons for controlling the lighting device 2, an operation method, and the like. The display unit 12 is a touch panel, and an input operation can be performed when the user U (see FIG. 1) touches it. A part of the operation buttons may be provided outside the display unit 12.

  The storage unit 13 is realized by a storage device such as a memory, for example. Various programs executed by the control unit 14 are stored in the storage unit 13. The storage unit 13 temporarily stores various data used when the control unit 14 executes various programs.

  For example, the control unit 14 executes various programs stored in a storage device inside the control device 3 by using a RAM or the like as a work area by a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). It is realized by. The control unit 14 may be realized by an integrated circuit such as an ASIC or FPGA, for example.

  The control unit 14 includes a reception unit 20, a grant unit 21, a distance calculation unit 22, and an angle calculation unit 23.

  Blocks constituting the control unit 14 (accepting unit 20 to angle calculation unit 23) are functional blocks that indicate functions of the control unit 14, respectively. These functional blocks may be software blocks or hardware blocks. For example, each functional block described above may be one software module realized by software (including a microprogram), or may be one circuit block on a semiconductor chip (die). Of course, each functional block may be one processor or one integrated circuit. The method of configuring the functional block is arbitrary. In addition, the control part 14 may be comprised by the functional unit different from the above-mentioned functional block.

  The accepting unit 20 accepts an input operation of the user U via the display unit 12, for example. A part of the accepted input operation is displayed on the display unit 12.

  When the user U touches the image displayed on the display unit 12, the assigning unit 21 assigns a virtual point to a location touched by the user U on the image. The virtual point is a point indicating the position of the real space selected by the user U on the image. Each point on the image is associated with each position in the real space, and when the user U touches the image, the position in the real space corresponding to the touched location is displayed on the image.

  Then, the assigning unit 21 assigns position information in the real space to the virtual point as augmented reality information (AR). The assigning unit 21 includes position information of the real space corresponding to the location touched by the user U, distance information between the counterpart in the real space corresponding to the location touched by the user U and the control device 3, and the user U The angle information or the like of the control device 3 when touched is associated with a virtual point as augmented reality information. The angle of the control device 3 is detected by, for example, an angle sensor (not shown) mounted on the control device 3.

  For example, when the user U touches the lighting device 2 in the image displayed on the display unit 12, the adding unit 21 gives a virtual point to the lighting device 2 on the image. And the provision part 21 is a virtual point, the positional information of the illuminating device 2 in real space, the distance information of the illuminating device 2 and the control apparatus 3, the angle information of the control apparatus 3 when the user U touches the image, etc. Tie.

  The distance calculation unit 22 calculates a distance in real space corresponding to the two points touched by the user U based on the AR information. When the user U touches two points of the image displayed on the display unit 12, the distance calculation unit 22 calculates a distance in real space corresponding to the two points touched by the user U.

  For example, when the user U touches the illumination device 2 and the illumination target 4 in the image displayed on the display unit 12, the distance calculation unit 22 is based on the AR information of the illumination device 2 and the AR information of the illumination target 4. Thus, the distance a ′ between the illumination device 2 and the illumination object 4 in the real space is calculated.

  Even if the user U moves the control device 3, the distance calculation unit 22 calculates the distance in real space corresponding to the two points touched by the user U using the angle information of the control device 3. Can be calculated.

  The angle calculation unit 23 calculates the tilt angle ψ and the pan angle θ of the illumination device 2 that irradiates the illumination target 4 based on the AR information.

  Here, a method of calculating the tilt angle ψ and the pan angle θ in the control device 3 will be described with reference to FIGS. 3 and 4. FIG. 3 is a diagram illustrating a positional relationship between the lighting device 2, the lighting target 4, and the user U. FIG. 4 is a diagram illustrating the positions of the illumination device 2, the illumination target 4, and the user U on the floor surface. Here, it is assumed that the ceiling and the floor are horizontal. Moreover, in FIG. 3, although the flower mounted on the table 30 is illustrated as the illumination object 4, it is not restricted to this, For example, the illumination object 4 may be mounted on the floor. Further, the illumination target 4 may be a person.

  First, the angle calculation unit 23 calculates the tilt angle ψ of the illumination device 2 that irradiates the illumination target 4.

  In the image displayed on the display unit 12, the ceiling (point g in FIG. 3) to which the illumination device 2 is attached, the illumination device 2 (point h in FIG. 3), and the illumination target 4 (point in FIG. 3). i) is touched by the user U, the angle calculation unit 23 calculates the tilt angle ψ of the illumination device 2 based on the AR information at the points g to i.

  Next, the distance calculation unit 22 calculates the distances a to c of the lighting device 2, the illumination target 4, and the user U on a horizontal plane, for example, the floor surface.

  When the lighting device 2 (point h in FIG. 3) and the illumination target 4 (point i in FIG. 3) are touched by the user U in the image displayed on the display unit 12, the distance calculation unit 22 Based on the AR information at the points h and i, a distance a ′ between the illumination device 2 and the illumination object 4 is calculated. Then, the distance calculation unit 22 determines the distance a (= a ′ cos ψ) between the position of the illumination device 2 on the floor surface and the position of the illumination target 4 on the floor surface based on the tilt angle ψ and the distance a ′. ) Is calculated.

  Further, in the image displayed on the display unit 12, the position of the illumination target 4 on the floor (point j in FIG. 3) and the user U's foot (point k in FIG. 3) are touched by the user U. Then, the distance calculation unit 22 calculates the distance b between the position of the illumination target 4 on the floor surface and the user U's foot based on the AR information at the points j and k.

  Further, in the image displayed on the display unit 12, the position of the lighting device 2 on the floor (point m in FIG. 3) and the step of the user U (point k in FIG. 3) are touched by the user U. Then, the distance calculation unit 22 calculates a distance c between the position of the lighting device 2 on the floor surface and the user U's feet based on the AR information at the points m and k. Here, the position of the floor surface of the pillar 31 which is a distance measurement object adjacent to the lighting device 2 is used as the position on the floor surface of the lighting device 2.

  The distance measurement object is not limited to the pillar 31. For example, in the case of a stand type in which the illumination device 2 is placed on the floor surface, the stand portion placed on the floor surface is used as the distance measurement object. Can be used.

  As described above, the distance calculation unit 22 is configured to adjust the pan angle θ, for example, the distance a between the lighting device 2 and the lighting target 4 on the floor, and the distance b between the user U and the lighting target 4 on the floor. And the distance c between the user U and the lighting device 2 on the floor surface is calculated. Note that the order of calculating the distances a, b, and c is not limited to the above order.

  Next, the angle calculation unit 23 calculates the pan angle θ of the illumination device 2 that irradiates the illumination target 4.

  As described above, when the distances a to c of the lighting device 2, the lighting target 4, and the user U in the horizontal plane are calculated, the positional relationship between the lighting device 2, the lighting target 4, and the user U is shown in FIG. In this way, the illumination device 2 can be represented as a vertex, and the illumination object 4 and the user U can be represented on a rectangle located on the side.

  In the rectangle shown in FIG. 4, the irradiation direction when the pan angle θ is zero coincides with one side of the rectangle. In FIG. 4, the illumination object 4 (point j), the illumination device 2 (point m), the angle B of the user's U foot (point k), and the illumination device 2 (point m), the illumination object 4 (point j), the user The angle C of U's foot (point k) can be expressed as follows.

B = sin ⁻¹ (h / c)
C = sin ⁻¹ (h / b)

  Note that “h” is a line connecting the illumination device 2 (point m) and the illumination target 4 (point j) as the bottom, and the illumination target 4 (point j), the illumination device 2 (point m), and the user U ’s feet. The height of the triangle formed by (point k), which can be expressed as follows:

    h = 2S / a

  Further, “S” and “s” can be expressed as follows.

S = (s (s−a) (s−b) (s−c)) ^1/2
s = (a + b + c) / 2

  Furthermore, in the rectangle shown in FIG. 4, the length of the side along the irradiation direction when the pan angle θ is zero is “x”, and is parallel to the side along the irradiation direction when the pan angle θ is zero. Where “x”, “x1”, “x2” can be expressed as follows, where “x1” and “x2” are the lengths of the sides divided by the user's U feet (point k): it can.

x = acosθ
x1 = b cos (θ−C) = b cos C cos θ + b sin C sin θ
x2 = cos (θ + B) = cosBcos θ−csinBsin θ

  Here, when α = b cosC, β = b sin C, γ = cos B, and δ = c sin B, “x1” and “x2” can be expressed as follows.

x1 = α cos θ + β sin θ
x2 = γ cos θ−δ sin θ

  Further, x = x1 + x2, and when the above equation is substituted into “x”, “x1”, and “x2”, the following can be expressed.

    acos θ = α cos θ + β sin θ + γ cos θ−δ sin θ

  By transforming this, tan θ can be expressed as follows.

    tan θ = sin θ / cos θ = (a−α−γ) / (β−δ)

  Thereby, pan angle (theta) for irradiating the illumination object 4 with the illuminating device 2 can be represented as follows.

θ = tan ⁻¹ ((a−α−γ) / (β−δ))

  As described above, the angle calculation unit 23 calculates the pan angle θ using the distances a to c. Information about the pan angle θ and the tilt angle ψ calculated by the angle calculation unit 23 is transmitted to the illumination device 2 via the communication unit 10 as a control signal.

  And the illumination object 4 is irradiated by the illuminating device 2 by controlling the illuminating device 2 so that it may become pan angle (theta) and the tilt angle (psi). That is, the user U can set the pan angle θ and the tilt angle ψ of the lighting device 2 by touching an image displayed on the display unit 12 so as to calculate the distances a to c.

  Next, the irradiation control process according to the present embodiment will be described with reference to FIG. FIG. 5 is a flowchart showing the irradiation control process according to the present embodiment.

  The control device 3 calculates the tilt angle ψ of the illumination device 2 based on the AR information (S10).

  Next, the control device 3 calculates distances a to c between the lighting device 2, the lighting target 4, and the user U on the horizontal plane based on the AR information (S11). Then, the control device 3 calculates the pan angle θ of the lighting device 2 based on the calculated distances a to c (S12).

  And the control apparatus 3 transmits the information of the calculated tilt angle (psi) and pan angle (theta) to the illuminating device 2 as a control signal (S13).

  The control device 3 calculates the distances a to c between the lighting device 2, the lighting target 4, and the user U on the horizontal plane based on the AR information. Then, the control device 3 calculates the pan angle θ of the lighting device 2 based on the calculated distances a to c.

  Thereby, the control apparatus 3 can calculate the pan angle θ of the illumination apparatus 2 with high accuracy based on the AR information, and can improve the accuracy of the illumination direction of the illumination apparatus 2. In addition, the user U does not need to directly adjust the pan angle θ of the lighting device 2 and can easily set the pan angle θ.

  Based on the AR information, the control device 3 determines the distance c between the position on the floor surface of the lighting device 2 and the foot of the user U and the distance between the position of the lighting target 4 on the floor surface and the foot of the user U. b is calculated.

  Accordingly, the user U can cause the control device 3 to calculate the distance c between the lighting device 2 and the user U on the horizontal plane and the distance b between the illumination target 4 and the user U on the horizontal plane by an easy operation. The operation for calculating the angle θ is facilitated.

  The control device 3 calculates the distance b between the position on the floor surface of the column 31 (distance measurement object) adjacent to the lighting device 2 and the user's U foot.

  Accordingly, the user U can cause the control device 3 to calculate the distance b between the position of the lighting device 2 on the floor surface and the user U's feet by an easy operation, and the pan angle θ is calculated. Operation becomes easy.

  Next, a modification of this embodiment will be described.

  As shown in FIG. 6, the control device 3 according to the modified example irradiates the illumination device 2 in the vertical direction, and is an image displayed on the display unit 12 (see FIG. 2) and is irradiated by the user U. Let the surface be the position (point m) of the floor surface of the lighting device 2. FIG. 6 is a diagram illustrating a positional relationship between the lighting device 2, the lighting target 4, and the user U in a modified example. The control device 3 according to the modified example calculates a distance c between the position of the irradiation surface (point m) and the foot of the user U (point k) by the distance calculation unit 22 (see FIG. 2).

  Thereby, even when there is no distance measurement object adjacent to the lighting device 2, the control device 3 according to the modification can calculate the distance c between the position of the lighting device 2 on the floor surface and the foot of the user U. And the pan angle θ can be calculated. Further, the control device 3 according to the modification can accurately calculate the distance c between the position on the floor surface of the lighting device 2 and the foot of the user U, and can calculate the pan angle θ more accurately. it can.

  Moreover, in the control apparatus 3 which concerns on a modification, with the image displayed on the display part 12 (refer FIG. 2), the user's U step (point k in FIG. 7) and the illuminating device 2 (point h in FIG. 7). ) Is touched by the user U, the angle calculation unit 23 (see FIG. 2) calculates the angle ζ between the lighting device 2 and the user U's foot based on the AR information at the points k and h. FIG. 7 is a diagram illustrating a positional relationship between the lighting device 2, the lighting target 4, and the user U in a modified example.

  The distance calculation unit 22 calculates the distance c ′ between the lighting device 2 and the user U's foot based on the AR information at the points k and h. Then, the distance calculation unit 22 (see FIG. 2), based on the angle ζ and the distance c ′, the position of the lighting device 2 on the floor surface (point m in FIG. 7) and the step of the user U (see FIG. 2). 7, the distance c (= c ′ cos ζ) from the point k) is calculated.

  Further, in the image displayed on the display unit 12, when the user U touches the step of the user U (point k in FIG. 7) and the illumination target 4 (point i in FIG. 7), the angle is calculated. The unit 23 calculates an angle ξ between the illumination target 4 and the user U's foot based on the AR information at the points k and i. In addition, the distance calculation unit 22 calculates the distance b ′ between the illumination target 4 and the user U's foot based on the AR information at the points k and i. Then, the distance calculation unit 22 determines the position of the illumination target 4 on the floor (point j in FIG. 7) and the step of the user U (point k in FIG. 7) based on the angle ξ and the distance b ′. The distance b (= b ′ cos ξ) is calculated.

  Accordingly, the control device 3 according to the modification can calculate the pan angle θ even when it is difficult to specify the positions of the illumination device 2 and the illumination target 4 on the floor surface.

  In addition, the control device 3 according to the modification may calculate the light distribution angle φ based on the AR information.

  For example, when the diameter L of the irradiation range in which the illumination target 4 is irradiated by the user U is set, the light distribution angle φ uses the distance a ′ between the illumination device 2 and the illumination target 4 calculated based on the AR information. And can be expressed as follows.

    tan (φ / 2) = L / 2a ′

  Thereby, the light distribution angle φ can be expressed as follows.

φ = 2 tan ⁻¹ (L / 2a ′)

  As described above, the control device 3 according to the modification may calculate the light distribution angle φ based on the AR information.

  Further, the control device 3 according to the modification may calculate the tilt angle ψ from the distance based on the AR information. For example, the control device 3 according to the modification calculates a distance a ′ between the illumination device 2 and the illumination target 4. Then, as shown in FIG. 8, the control device 3 according to the modification has a distance d between the position of the illumination target 4 on the ceiling (point p in FIG. 8) and the illumination target 4 (point i in FIG. 8). Is calculated. FIG. 8 is a diagram illustrating a positional relationship between the lighting device 2, the lighting target 4, and the user U in a modified example.

  Then, the control device 3 according to the modified example calculates the tilt angle ψ based on the calculated distances a ′ and d based on the following equation.

ψ = sin ⁻¹ (d / a ′)

  As described above, the control device 3 according to the modification may calculate the tilt angle ψ based on the distances a ′ and d based on the AR information.

  Moreover, the control apparatus 3 which concerns on a modification is an image displayed on the display part 12, for example, when the illumination apparatus 2 and the illumination object 4 are touched by the user U, based on AR information, the illumination apparatus 2 Alternatively, an auxiliary line extending in the vertical direction from the illumination target 4 may be displayed on the display unit 12.

  Thereby, the user U can easily know the positions of the illumination device 2 and the illumination target 4 on the floor surface, and easily touch the positions of the illumination device 2 and the illumination target 4 on the floor surface. be able to. Therefore, the control device 3 according to the modification can accurately calculate the pan angle θ.

  Note that some functions of the control device 3 may be incorporated in the lighting device 2. For example, the distance calculation unit 22, the angle calculation unit 23, and the communication unit 10 of the control device 3 may be incorporated in the lighting device 2 and transmit a control signal within the lighting device 2.

  For example, even when the user U is standing on the floor and the illumination target 4 is on the table 30 placed on the carpet, the position of the illumination target 4 on the carpet is the same as the user U's foot. The distance may be calculated by regarding it as a horizontal plane. That is, the distance between the lighting device 2, the illumination target 4, and the user U in the horizontal plane includes a distance on a plane that can be regarded as the same horizontal plane.

  Further, the horizontal plane is not limited to the ceiling or the floor. For example, when the lighting device 2 is provided above the table 30 on which the illumination target 4 is placed and the user U is in the vicinity of the table 30, the table surface is a horizontal surface, and the distances a to c on the table surface are set. It may be calculated.

  In addition, the control device 3 includes a computer-readable recording medium on which a program for realizing the processing described above is recorded. The CPU can execute the processing described above by reading the program recorded on the recording medium. The computer-readable recording medium is a semiconductor memory such as the ROM described above, a magnetic disk, a magneto-optical disk, or the like.

  Further, the present invention is not limited by the above embodiment. What comprised suitably combining each component mentioned above is also contained in this invention. Further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspect of the present invention is not limited to the above-described embodiment, and various modifications can be made.

DESCRIPTION OF SYMBOLS 1 Lighting system, 2 Lighting apparatus, 3 Control apparatus, 10 Communication part, 11 Imaging part, 12 Display part, 14 Control part, 20 Reception part, 21 Giving part, 22 Distance calculation part, 23 Angle calculation part

Claims (8)

A control device for controlling the lighting device,
Based on the augmented reality information given to the image in which the illumination device and the illumination target are photographed, a distance calculation unit that calculates the distance between the illumination device, the illumination target, and the user in a horizontal plane;
An angle calculator that calculates a rotation angle of the lighting device in the horizontal direction based on the calculated distances;
A control unit comprising: a transmission unit that transmits information about the calculated rotation angle to the illumination device. The distance calculation unit
As the distance between the lighting device and the user, calculate the distance between the position of the lighting device on the floor and the user's feet,
The control device according to claim 1, wherein a distance between a position of the illumination target on the floor surface and the user's foot is calculated as the distance between the illumination target and the user. The distance calculation unit
The control device according to claim 2, wherein a distance between a position on the floor surface of a distance measurement object adjacent to the lighting device and the user's feet is calculated as the distance between the lighting device and the user. The distance calculation unit
The distance between the position of the irradiation surface of the floor surface and the user's feet when the lighting device is illuminated in the vertical direction is calculated as the distance between the lighting device and the user. Control device. The angle calculator is
A light distribution angle of the lighting device is calculated based on the distance between the lighting device and the lighting target and a range in which the lighting target is illuminated by the lighting device;
The transmitter is
The control apparatus as described in any one of Claims 1-4 which transmits the information regarding the calculated said light distribution angle to the said illuminating device. The lighting device;
A lighting system comprising: the control device according to claim 1. A control method for controlling a lighting device, comprising:
A distance calculation step of calculating each distance between the lighting device, the lighting target, and the user in a horizontal plane based on augmented reality information given to an image obtained by photographing the lighting device and the lighting target;
An angle calculating step of calculating a rotation angle of the lighting device in the horizontal direction based on the calculated distances;
And a transmission step of transmitting information related to the calculated rotation angle to the lighting device. A program for controlling a lighting device,
A distance calculation procedure for calculating each distance between the lighting device, the lighting target, and the user in a horizontal plane based on augmented reality information given to an image obtained by photographing the lighting device and the lighting target;
An angle calculation procedure for calculating a rotation angle of the lighting device in the horizontal direction based on the calculated distances;
A program for causing a computer to execute a transmission procedure for transmitting information related to the calculated rotation angle to the lighting device.

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