JP4722733B2 - Shooting position specifying system, shooting position specifying device, and shooting position specifying method - Google Patents

Description

  The present invention relates to a shooting position specifying system, a shooting position specifying apparatus, and a shooting position specifying method, in particular, a shooting position specifying system, a shooting position specifying apparatus, and a shooting position specifying for calculating a position where an image is shot using a plurality of terminals. Regarding the method.

Conventionally, what is described in Patent Document 1 is known as a photographing apparatus such as a camera that can grasp where a photographed image is photographed. This photographing device acquires information on the position of the photographing device from GPS (Global Positioning System) at the time of photographing a subject, and stores the photographed image and the information on the photographed position in association with each other.
JP 2005-203994 A

However, the photographing apparatus described in Patent Document 1 has a problem that the position at the time of photographing cannot be accurately specified because the position specifying accuracy using GPS is about several meters. In addition, in order to specify a position using GPS, it is necessary to receive radio waves from a satellite. Therefore, there has been a problem in that an imaging position cannot be specified in a building or underground.
In addition, the technology to embed and print the date and time at the time of shooting in the photo has been known, but this technology can know the date and time when the photo was taken, but it was taken with the photographer's view about the subject It was not possible to manage images in association with each other. Therefore, when a time elapses after the photograph is taken, there is a problem that it is difficult for the photographer and the third party to grasp what purpose the photograph is taken.

  The present invention has been made in view of the above circumstances, and its purpose is to accurately obtain the position where an image is taken, and to obtain an image and sound even in an environment where the use of radio waves is not permitted. It is an object of the present invention to provide a shooting position specifying system, a shooting position specifying device, and a shooting position specifying method that can be managed in association with each other.

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is a shooting position specifying system including a shooting position specifying device and at least three terminals. The apparatus includes a shooting instruction acquisition means for acquiring a shooting instruction, a recording instruction acquisition means for acquiring a recording instruction, a shooting means for shooting a subject when the shooting instruction is acquired, and positions of the at least three terminals. First storage means for storing in advance, electromagnetic wave radiation means for emitting electromagnetic waves when the photographing instruction is acquired, sound wave receiving means for receiving sound waves transmitted from the at least three terminals, and receiving the sound waves Time acquisition means for acquiring the time when the electromagnetic wave was emitted and the time when the electromagnetic wave was emitted, and calculating the distance to each terminal based on the difference between the time when the sound wave was received and the time when the electromagnetic wave was emitted, and the sound speed. A distance calculating unit that calculates a position of the self-capturing position specifying device based on a distance to each terminal, a recording unit that records a sound when the recording instruction is acquired, and the imaging unit And a second storage means for storing the photographing result, the recording result by the recording means, and the position of the self-photographing position specifying device calculated by the position calculating means in association with each other. An imaging position specifying system comprising: an electromagnetic wave receiving unit that receives an emitted electromagnetic wave; and a sound wave transmitting unit that transmits a sound wave when the electromagnetic wave is received.

  The invention described in claim 2 is a shooting position specifying system including a shooting position specifying device and at least three terminals, and the shooting position specifying device wired a synchronization signal to the at least three terminals. Synchronization signal transmitting means for transmitting using communication, shooting instruction acquiring means for acquiring shooting instructions, recording instruction acquiring means for acquiring recording instructions, and shooting means for shooting a subject when the shooting instructions are acquired First storage means for preliminarily storing the positions of the at least three terminals, sound wave receiving means for receiving sound waves transmitted from the at least three terminals, time when the sound waves were received, and the photographing instruction. Time acquisition means for acquiring the acquired time; distance calculation means for calculating the distance to each terminal based on the difference between the time when the sound wave is received and the time when the synchronization signal is transmitted and the sound speed; Position calculating means for calculating the position of the self-photographing position specifying device based on the distance to each terminal, recording means for recording a sound when the recording instruction is acquired, a photographing result by the photographing means, and the recording means And a second storage unit that associates and stores the recording result obtained by the position calculation unit and the position of the self-capturing position specifying device calculated by the position calculation unit, and the terminal transmits the synchronization transmitted using the wired communication. An imaging position specifying system comprising: synchronization signal receiving means for receiving a signal; and sound wave transmitting means for transmitting a sound wave when the synchronization signal is received.

  According to a third aspect of the present invention, the first storage means stores in advance the positions of the at least three terminals and identification information of the terminals in association with each other, and the sound wave receiving means The sound wave transmitted from at least three terminals is received, and the terminal from which the sound wave is transmitted is specified based on the identification information, and the sound wave transmitting means receives the electromagnetic wave or the synchronization signal. 3. The imaging position specifying system according to claim 1 or 2, wherein a sound wave including identification information of the terminal is transmitted in a case where the information is detected.

  According to a fourth aspect of the present invention, the photographing position specifying device further includes a direction measuring unit that measures a direction in which a subject is shot, and the second storage unit stores information taken by the shooting unit. 4. The photographing position specifying system according to claim 1, further storing the azimuth measured by the azimuth measuring unit in association with each other. 5.

  Further, the invention described in claim 5 further includes an elevation angle measuring unit that calculates an elevation angle of the self-portrait position specifying device at the time of shooting based on the acceleration of gravity, and the second storage unit includes: The imaging position specifying system according to any one of claims 1 to 4, wherein the elevation angle calculated by the elevation angle calculation means is further stored in association with the captured information.

  According to a sixth aspect of the present invention, there is provided a photographing instruction obtaining unit for obtaining a photographing instruction, a recording instruction obtaining unit for obtaining a recording instruction, a photographing unit for photographing a subject when the photographing instruction is obtained, A first storage means for preliminarily storing the positions of the three terminals; an electromagnetic wave radiation means for emitting an electromagnetic wave when the photographing instruction is acquired; and a sound wave reception for receiving a sound wave transmitted from the at least three terminals. Means, time acquisition means for acquiring the time when the sound wave was received and the time when the imaging instruction was acquired, and each terminal based on the difference between the time when the sound wave was received and the time when the electromagnetic wave was radiated and the sound speed Distance calculating means for calculating the distance of the camera, position calculating means for calculating the position of the self-capturing position specifying device based on the distance to each terminal, and recording for recording voice when the recording instruction is acquired And a second storage means for storing the photographing result by the photographing means, the recording result by the recording means, and the position of the self-photographing position specifying device calculated by the position calculating means in association with each other. This is a photographing position specifying device.

  According to a seventh aspect of the present invention, there is provided a synchronization signal transmitting means for transmitting a synchronization signal to the at least three terminals using wired communication, a shooting instruction acquiring means for acquiring a shooting instruction, and a recording instruction. Transmitted from the at least three terminals, a recording instruction acquisition means for performing the photographing, a photographing means for photographing the subject when the photographing instruction is obtained, a first storage means for previously storing the positions of at least three terminals. A sound wave receiving means for receiving a sound wave, a time obtaining means for obtaining a time when the sound wave is received and a time when the photographing instruction is obtained, and a difference between the time when the sound wave is received and the time when the synchronization signal is transmitted A distance calculating means for calculating the distance to each terminal based on the speed of sound, a position calculating means for calculating the position of the self-photographing position specifying device based on the distance to each terminal, and the recording instruction Recording means for recording the voice, second storage means for storing the photographing result by the photographing means, the recording result by the recording means, and the position of the self-photographing position specifying device calculated by the position calculating means in association with each other. A photographing position specifying device characterized by comprising:

  The invention according to claim 8 is a shooting position specifying method using a shooting position specifying device and at least three terminals, and a shooting instruction acquiring step of acquiring a shooting instruction by the shooting position specifying device; Recording instruction acquisition process for acquiring a recording instruction by the shooting position specifying device, shooting process for shooting a subject by the shooting position specifying device when the shooting instruction is acquired, and shooting of the positions of the at least three terminals A first storage process stored in advance by the position specifying device; an electromagnetic wave emitting process for emitting an electromagnetic wave by the shooting position specifying device when the shooting instruction is acquired; and at least three electromagnetic waves emitted in the electromagnetic wave emitting process. Electromagnetic wave receiving process received by the terminal and a sound wave transmitting process for transmitting a sound wave by the at least three terminals when the electromagnetic wave is received , A sound wave receiving process in which sound waves transmitted from the at least three terminals are received by the shooting position specifying device, a time at which the sound wave is received and a time at which the shooting instruction is acquired are acquired by the shooting position specifying device. An acquisition process, a distance calculation process for calculating a distance to each terminal based on a difference between a time at which the sound wave is received and a time at which the electromagnetic wave is radiated, and a sound speed; A position calculation process for calculating the position of the self-capturing position specifying device based on the distance by the shooting position specifying apparatus, a recording process for recording sound by the shooting position specifying apparatus when the recording instruction is acquired, and the shooting process The shooting position specifying device associates the shooting result in the recording process, the recording result in the recording process, and the position of the self-shooting position specifying apparatus calculated in the position calculating process. A shooting location method characterized in that it comprises a second storage step of storing.

In the photographing position specifying device of the present invention, a subject is photographed when a photographing instruction is acquired, the positions of at least three terminals are stored in advance, and an electromagnetic wave is radiated and transmitted from each terminal when the photographing instruction is acquired. To obtain the time when the sound wave was received and the time when the electromagnetic wave was emitted, and calculate the distance to each terminal based on the difference between the time when the sound wave was received and the time when the electromagnetic wave was emitted and the sound speed, Based on the distance, the position of the self-photographing position specifying device is calculated, and when a recording instruction is acquired, a sound is recorded, and the photographing result, the recording result, and the position of the self-photographing position specifying device are associated and stored. did.
As a result, even in a room where GPS radio waves cannot be received, after the user installs at least three terminals in the room, the user gives a shooting instruction to the shooting position specifying device and takes a shot. Can be recorded in association with the exact position where the image is taken. Therefore, the user can easily manage the captured images, and can prevent the user from knowing which image was captured where.
In addition, since the recording result by the photographing unit and the recording result by the recording unit are stored in association with each other, the recording unit acquires the words of the photographer at the time of photographing, so that time has passed since the photographing. However, it is possible to grasp for what purpose the photographed image or the like was photographed. Therefore, it is possible to reduce the burden on the administrator who manages the captured image.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram showing an example of the configuration of an imaging position specifying system according to the first embodiment of the present invention. The shooting position specifying system includes a shooting position specifying device 10a and terminals 20a, 20b, and 20c. The photographing position specifying device 10a is a device used by an administrator of the photographing position specifying system and has a camera function for photographing the subject 60.
The terminals 20a to 20c are devices that are installed around the subject 60 before the photographing position specifying system administrator or the like takes a picture of the subject 60 with the photographing position specifying device 10a. As the terminals 20a to 20c, for example, ultrasonic tags that transmit sound waves such as ultrasonic waves can be used.

Here, the terminals 20a to 20c are attached to the tripods 30a to 30c and installed at predetermined positions on the floor 40 in the building. The installation positions of the terminals 20a to 20c are measured in advance by an administrator of the photographing position specifying system. Here, the installation positions of the terminals 20a, 20b, and 20c are (x, y, z) = (x _a , y _a , z _a ), (x _b , y _b , z _b ), and (x _c , y), respectively. _c , z _c ) will be described. However, the predetermined position of the floor 40 is the origin (x, y, z) = (0, 0, 0).

  FIG. 2 is a block diagram showing an example of the configuration of the photographing position specifying device 10a (FIG. 1) according to the first embodiment of the present invention. The imaging position specifying device 10a includes an input unit 11 (imaging instruction acquisition unit, recording instruction acquisition unit), an imaging unit 12 (imaging unit), a light emitting unit 13 (electromagnetic wave emission unit), a sound wave reception unit 14 (sound wave reception unit), Time acquisition unit 15 (time acquisition unit), control unit 16 (distance calculation unit, position calculation unit), storage unit 17 (first storage unit, second storage unit), direction measurement unit 18 (direction measurement unit), It has an elevation angle measurement unit 19 (elevation angle measurement unit) and a recording unit 51 (recording unit).

The input unit 11 includes buttons for operating the shooting position specifying device 10a, and inputs terminal position information, frequency information, shooting instructions, recording instructions, and the like based on operations by an administrator of the shooting position specifying system. To do. For example, when the display position screen is provided in the photographing position specifying device 10a, the button is used to directly touch and input a portion displayed on the screen, or to set the cursor on the content displayed on the screen. These buttons are used to designate and determine the upper, lower, left, and right of the button, and buttons with predetermined numbers, symbols, characters, and instruction contents.
Here, the terminal position information refers to the installation positions (x, y, z) of the terminals 20a to 20c = (x _a , y _a , z _a ), (x _b , y _b , z _b ), (x _c , y _c , z _c ) information. Also, the frequency information, the frequency _f a of the sound waves respectively assigned to the terminal 20 a to 20 _c, refers to information of f b, _{f c.} Note that the frequencies f _a , f _b , and f _c are selected as frequencies that are prime to each other so that “beat” does not easily occur when they overlap.
The imaging unit 12 images the subject 60 (FIG. 1) and generates image information such as JPEG (Joint Photographic Experts Group). The light emitting unit 13 is a device that emits light according to the same principle as that of a flash, has a function of shielding electromagnetic noise generated during light emission, and radiates light around the photographing position specifying device 10a.
The electromagnetic wave here refers to a wave of energy generated by the interaction of electricity and magnetism, such as radiation, light, radio waves, electromagnetic fields, and the like.

The sound wave receiving unit 14 includes a microphone or the like, and receives sound waves transmitted from the terminals 20a to 20c. The time acquisition unit 15 includes a clock circuit, for example, and acquires a time t ₀ emitted by the light emitting unit 13 and a time such as the current time.
The control unit 16 includes, for example, a one-chip microcomputer or the like, and is acquired by the time acquisition unit 15, the time t ₀ emitted by the light emitting unit 13, and the time t _a when the sound waves transmitted from the terminals 20 a to 20 c are received. t _b, by the _{t c,} obtains these time _{t a,} t b, the difference between _{t c} and the time _{t 0,} respectively, by multiplying the sound velocity _{v s} to their difference, capturing localization device 10a and the terminal 20a~ Distances D _a , D _b , and D _c with respect to 20c are calculated. The distances D _a , D _b , and D _c can be expressed by the following formulas (1) to (3), respectively.

_{D a = v s (t a} -t 0) ··· formula (1)
D _b = v _s (t _b −t ₀ ) (2)
D _c = v _s (t _c −t ₀ ) (3)

On the other hand, the installation positions (x, y, z) of the terminals 20a to 20c recorded in the storage unit 17 = (x _a , y _a , z _a ), (x _b , y _b , z _b ), (x _c , Y _c , z _c ), distances D _a , D _b , D _c between the imaging position specifying device 10a and the terminals 20a to 20c, and the position (x, y, z) = (x ₀ ) of the imaging position specifying device 10a. , Y ₀ , z ₀ ), the following expressions (4) to (6) are satisfied.

D _a ² = (x _a −x ₀ ) ² + (y _a −y ₀ ) ² + (z _a −z ₀ ) ² Formula (4)
^{_{D b 2 = (x b -x}} 0) 2 + (y b -y 0) 2 + (z b -z 0) 2 ··· Equation (5)
^{_{D c 2 = (x c -x}} 0) 2 + (y c -y 0) 2 + (z c -z 0) 2 ··· Equation (6)

  The following formulas (7) and (8) are obtained by solving the above formulas (1) to (6).

y ₀ = Ax ₀ + B (7)
z ₀ = Cx ₀ + D (8)

In equations (7) and (8), A, B, C, and D are predetermined coefficients. By substituting equation (7) and (8) into equation (4), two x ₀ in the plane mirror image relation to a symmetry plane containing the triangle made of three points of the terminal 20a~20c is obtained.
Similarly, two y ₀ and z ₀ having the same mirror image relationship are obtained. Which of the two positions (x ₀ , y ₀ , z ₀ ) having the same mirror image relationship is selected is determined by giving an instruction from the input unit 11 by an administrator of the imaging position specifying system. When the terminals 20a to 20c are installed on the floor, the one having the larger z coordinate is automatically selected from two positions (x ₀ , y ₀ , z ₀ ) having the same mirror image relationship. May be. In addition, when the terminals 20a to 20c are installed on the ceiling, the one having the smaller z coordinate is automatically selected from two positions (x ₀ , y ₀ , z ₀ ) having the same mirror image relationship. May be.
In addition, in the above formulas (7) and (8), the case where y ₀ and z ₀ are expressed as x ₀ is described, but x ₀ and z ₀ are expressed as y ₀ or x ₀ and by representing the y ₀ as an expression of z _0, it may be calculated the position of the photographing position determination device 10a.
The storage unit 17 stores terminal location information (x _a , y _a , z _a ), (x _b , y _b , z _b ), (x _c , y _c , z _c ), frequency information f _a , f _b , f _c, information of the sound velocity v _s, also stores a time obtained the time and images obtained with these positions. Since the sound speed changes according to conditions such as the temperature, the administrator of the photographing position management system according to the present embodiment may input the sound speed from the input unit 11. Further, the photographing position specifying device 10a is placed at a place where the terminal 20a is installed, and then light is emitted from the light emitting unit 13 of the photographing position specifying device 10a, and a sound wave transmitted from another terminal 20b is received to emit light. The sound velocity in the environment at the time of shooting may be measured based on the time from when the unit 13 emits light until the sound wave of the terminal 10b is received and the distance between the terminal 20a and the terminal 20b.

FIG. 3 is a diagram showing an example of information recorded in advance in the storage unit 17 of the photographing position specifying device 10a (FIG. 1) according to the first embodiment of the present invention. As shown in FIG. 3, the storage unit 17 is associated with a terminal name (terminal 20a or the like), and terminal position information (x coordinate (x _a or the like), y coordinate (y _a or the like) of the terminals 20a to 20c. , Z coordinates (such as z _a )) and frequency information (such as f _a ) are recorded.

Returning to FIG. 2, the azimuth measuring unit 18 includes a azimuth magnet and the like, and measures the azimuth in which the subject 60 (FIG. 1) exists with respect to the imaging position specifying device 10a.
The elevation angle measurement unit 19 includes an acceleration sensor that measures the direction of gravity, and measures the elevation angle of the imaging position specifying device 10a from the relationship between the direction of gravity and the vertical direction of the imaging position specifying device 10a. For example, when the lens of the photographing position specifying device 10a is facing the direction of the floor 40, the elevation angle is −90 degrees, and when the lens is facing the direction parallel to the ground, the elevation angle is 0 degrees and facing the ceiling. In this case, the elevation angle is determined to be 90 degrees.
The recording unit 51 is configured by a microphone or the like, collects sound of a user of the photographing position specifying device 10a and generates sound information such as MP3 (MPEG Audio Layer 3).

FIG. 4 is a block diagram showing an example of the configuration of the terminal 20a (FIG. 1) according to the first embodiment of the present invention. Note that the configurations of the terminals 20b and 20c are the same as the configuration of the terminal 20a, and thus detailed description thereof is omitted. The terminal 20a includes a light receiving unit 21 (electromagnetic wave receiving unit), a control unit 22, and a sound wave transmitting unit 23 (sound wave transmitting unit).
For example, in the present embodiment, the light receiving unit 21 includes an optical sensor, and receives light emitted from the light emitting unit 13 of the imaging position specifying device 10a. When the light receiving unit 21 receives the light emitted from the light emitting unit 13 of the imaging position specifying device 10a, the control unit 22 transmits a sound wave from the sound wave transmitting unit 23. Wave transmission unit 23, a sound wave of a frequency f _a which is assigned to the terminal 20a, transmits to the circumference of the photographing position determination device 10a.

Next, processing of the photographing position specifying system according to the first embodiment of the present invention will be described.
FIG. 5 is a flowchart showing an example of processing of the imaging position specifying device 10a according to the first embodiment of the present invention.
First, the administrator of the photographing position specifying system installs the terminals 20a to 20c around the subject 60 to be photographed. Then, the administrator has the three-dimensional positions (x, y, z) = (x _a , y _a , z _a ), (x _b , y _b , z _b ), (x _c , y _c , z _c ) is measured by surveying or the like and input from the input unit 11 as terminal position information. Further, the user of the photographing position specifying device 10a inputs the sound wave frequencies f _a , f _b , and f _c specific to the terminals 20a to 20c from the input unit 11 as frequency information. As shown in FIG. 3, the control unit 16 records terminal location information and frequency information in the storage unit 17 in association with the terminal name (step S101).

Next, the control unit 16 determines whether or not a shooting instruction is input from the input unit 11 (step S102). The photographing instruction is input by the input unit 11 when the administrator of the photographing position specifying system photographs a subject.
If no shooting instruction is input from the input unit 11, “NO” is determined in step S 102, and the process waits until a shooting instruction is input to the input unit 11. On the other hand, when a shooting instruction is input to the input unit 11, “YES” is determined in step S102, and the control unit 16 causes the light emitting unit 13 to emit light, thereby emitting light around the shooting position specifying device 10a. Radiate (step S103). The control unit 16 records a light emission time t ₀ that is a time at which light is emitted from the light emitting unit 13 in the storage unit 16.
Further, the control unit 16 captures the subject by the capturing unit 12 (step S104), and records the captured image and the time at that time in the storage unit 17 in association with each other.

On the other hand, the control unit 22 of the terminal 20a~20c is, when receiving the light emitted from the light emitting unit 13 of the photographing position determination device 10a by the light receiving unit 21, a frequency _f a of wave transmission unit _23, f b, _{f c} Each sound wave is transmitted.

The sound wave receiving unit 14 of the imaging position specifying device 10a receives sound waves transmitted from the sound wave transmitting units 23 of the terminals 20a to 20c, respectively (step S105). The control unit 16 sets the sound wave reception times t _a , t _b , and t _c that are times when the sound wave reception unit 14 receives sound waves transmitted from the terminals 20 a to 20 _c to the current time transmitted from the time acquisition unit 15. Identify based on. Further, the control unit 16 specifies from which terminal the sound wave received by the sound wave receiving unit 14 is transmitted based on the correspondence relationship between the terminal name and the frequency information stored in the storage unit 17 in step S101. And recorded in the storage unit 17 (step S106).

The control unit 16 calculates the above-described formula (1) from the sound wave reception times t _a , t _b and t _c for the sound waves transmitted from the terminals 20 a to 20 _c and the light emission time t ₀ stored in the storage unit 17. ) To Equations (3), distances D _a , D _b , and D _c between the imaging position specifying device 10a and the terminals 20a to 20c are calculated (step S107).
Further, the control unit 16 uses the distances D _a , D _b , and D _c to _calculate the three-dimensional position (x, y, z) of the imaging position specifying device 10a from the expressions (4) to (8). = (X ₀ , y ₀ , z ₀ ) is calculated (step S108).

  Next, the control unit 16 determines whether or not a recording instruction is input to the input unit 11 (step S109). This recording instruction is input to the input unit 11 when the administrator of the photographing position specifying system records voice. Even when the administrator of the photographing position specifying system does not input a recording instruction from the input unit 11, when the photographing unit 12 captures an image, the recording unit 51 performs audio for a certain period of time (for example, 3 minutes). You may make it record. Further, when the administrator of the shooting position specifying system takes an image, it is assumed that the control unit 16 has acquired a recording instruction when the shutter button is continuously pressed for a predetermined time (for example, 3 seconds). Voice recording may be performed by 51.

  If a recording instruction is not input to the input unit 11, “NO” is determined in the step S109, and the process proceeds to a step S111 described later. Wait until a recording instruction is input to the input unit 11. On the other hand, if a recording instruction is input to the input unit 11, “YES” is determined in step S 109, and the control unit 16 causes the recording unit 51 to record a sound for a predetermined time (step S 110). . The control unit 16 records the voice recorded by the recording unit 51 in the storage unit 17.

And the control part 16 acquires the azimuth | direction information about which azimuth | direction the imaging position specific | specification apparatus 10a faced when image | photographing the to-be-photographed object 60 by step S104 from the azimuth | direction measurement part 18 (step S111). In addition, when the subject 60 is imaged in step S104, the control unit 16 acquires elevation angle information about how many elevation angles of the imaging position specifying device 10a are from the elevation angle measurement unit 19 (step S112).
Then, the control unit 16 records the image of the subject 60 photographed in step S104, the sound recorded in step S110, the photographing information, and the photographing time in association with each other in the photographing order (step S113). Here, the shooting information includes the position information of the shooting position specifying device 10a calculated in step S108, the azimuth information acquired in step S111, and the elevation angle information obtained in step S112.

FIG. 6 is a diagram showing an example of information recorded in the storage unit 17 of the photographing position specifying device 10a (FIG. 1) according to the first embodiment of the present invention. By performing the processing according to the flowchart of FIG. 5, information as illustrated in FIG. 6 is recorded in the storage unit 17. In other words, in association with the image name of the image photographed by the photographing position determination device 10a (such as images p1), the position information (x coordinates indicating the position on the three-dimensional imaging localization device 10a (x _0, etc.), y Coordinates (y ₀ etc.), z coordinates (z ₀ etc.), voice names (sound m1 etc.) recorded by the recording unit 51 of the photographing position specifying device 10a, direction information (north-northeast etc.), and elevation angle information (e.g. 90 degrees) is recorded in the storage unit 17 together with the time at that time.

According to the above-described shooting position specifying system according to the first embodiment of the present invention, the shooting position is specified using light and sound waves between the shooting position specifying device 10a and the terminals 20a to 20c. Even in a communication machine room where the use of radio waves is not permitted, it is possible to specify the shooting position of an image, and the burden on the administrator to manage the image can be reduced.
Further, since the terminals 20a to 20c are installed around the photographing position specifying device 10a, and the position of the photographing position specifying device 10a is calculated from the positions of the terminals 20a to 20c, indoors where GPS radio waves cannot be received. The image taken when checking the indoor equipment can be managed together with the shooting position of the image, so that the burden on the administrator or the like can be reduced. In addition, since the position of the photographing position specifying device 10a can be specified more accurately than the GPS that can specify the position only with a precision of several meters, it is a case where a plurality of devices having the same appearance are installed. Even if it exists, the administrator can grasp which device was taken.
In addition, since the image photographed by the photographing unit 12 and the voice recorded by the recording unit 51 are associated with each other and recorded in the storage unit 17, the recording unit 51 acquires the photographer's words at the time of photographing. Even if time has elapsed since the image was taken, it is possible to grasp information such as what purpose the taken image or the like was taken. Therefore, it is possible to reduce the burden on the administrator who manages the captured image.

In the first embodiment described above, the captured image and the shooting information are separately recorded in the storage unit 17, but may be recorded together as one file. In addition, the captured image and the shooting information are not recorded in the storage unit 17 but are recorded in another storage medium, or, for example, in a PC (Personal Computer) that is a management device of the shooting position specifying system through wireless communication. You may make it transmit.
In the first embodiment described above, when calculating the distance between the imaging position specifying device 10a and the terminals 20a to 20c, only the sound propagation time is considered and the light propagation time is not considered. This is because the light propagation time is negligibly small compared to the sound propagation time.
In the first embodiment described above, when the imaging position specifying device 10a receives a sound wave having the same frequency a plurality of times, it is desirable to specify the position based on the sound wave first received by the imaging position specifying device 10a. . Thereby, it is possible to remove the influence of the sound wave transmitted from the terminal and reflected on the wall or the like and reaching the imaging position specifying device 10a.

Next, an imaging position specifying system according to a modification of the first embodiment of the present invention will be described.
FIG. 7 is a schematic diagram illustrating an example of a configuration of a photographing position specifying system according to a modification of the first embodiment of the present invention. The parts where the photographing position specifying system according to the present embodiment has the same configuration as the photographing position specifying system according to the first embodiment (FIG. 1) are denoted by the same reference numerals, and detailed description thereof is omitted.
The present embodiment is different from the photographing position specifying device 10a according to the first embodiment in that the photographing position specifying device 10b is attached to the photographing device 70 such as a camera.

FIG. 8 is a block diagram showing an example of the configuration of the imaging position specifying device 10b according to the modification of the first embodiment of the present invention. The parts where the photographing position specifying device 10b according to the present embodiment has the same configuration as the photographing position specifying device 10a (FIG. 2) according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. To do.
The imaging position specifying device 10 a (FIG. 1) according to the first embodiment is different in that it does not have the imaging unit 12 and has a light receiving unit 50 (electromagnetic wave receiving means) instead of the light emitting unit 13. Moreover, the control method by the control part 16 differs.
The light receiving unit 50 includes, for example, an optical sensor, and receives light such as a flash emitted from the photographing device 70 to which the photographing position specifying unit 10b is attached.
In addition, since the structure of the terminals 20a-20c of this embodiment is the same as that of 1st Embodiment, those detailed description is abbreviate | omitted.

Next, processing of the photographing position specifying system according to the modification of the first embodiment of the present invention will be described.
FIG. 9 is a flowchart showing an example of processing of the imaging position specifying device 10b according to the modification of the first embodiment of the present invention. Note that the processing in steps S201 and S203 to S210 is the same as the processing in steps S101 and 105 to S112 (FIG. 5) of the imaging position specifying device 10a according to the first embodiment, and thus detailed description thereof is omitted.
In step S201, terminal location information and frequency information are recorded in the storage unit 17 in association with the terminal name, as in the first embodiment.
In step S202, it is determined whether or not the light receiving unit 50 has received light such as a flash emitted from the imaging device 70 to which the imaging position specifying device 10b is attached.
If the light emitted from the imaging device 70 is not received by the light receiving unit 50, “NO” is determined in step S202, and the process waits until the light emitted from the imaging device 70 is received.
On the other hand, when the light emitted from the imaging device 70 is received by the light receiving unit 50, “YES” is determined in step S202, and the control unit 16 emits light at time t when the light receiving unit 50 receives the light. ₀ is recorded in the storage unit 16. Then, the process proceeds to step S203, and the position of the imaging position specifying device 10b is calculated and the azimuth information and the elevation angle information are acquired (step S203 to step S210), as in the first embodiment.

  Further, in step S211, the control unit 16 determines the position information of the photographing position specifying device 10b calculated in step S206, the voice recorded in step S208, the azimuth information acquired in step S209, and the elevation angle information acquired in step S210. Are associated with each other and recorded in the storage unit 17 in the shooting order of the shooting unit 12.

According to the photographing position specifying system according to the modified example of the first embodiment of the present invention described above, in addition to the effects obtained by the photographing position specifying system according to the first embodiment, a photographing function and a light emitting function such as a flash are provided. By simply attaching the photographing position specifying device 10b to the photographing device 70, which is a normal camera, the image taken at which position is taken at which position, and in which direction the image is taken. Information on what elevation angle is taken can be recorded in the storage unit 17.
Therefore, the administrator of the shooting position specifying system can easily manage images by associating the image shot by the shooting device 70 with the shooting information recorded by the shooting position specifying device 10b.

Next, an imaging position specifying system according to the second embodiment of the present invention will be described.
FIGS. 10A and 10B are schematic views showing an example of the configuration of the photographing position specifying system according to the second embodiment of the present invention. FIG. 10A is a plan view showing a state of the ceiling 41 of the room where the subject 60 to be photographed by the photographing position specifying device 10c exists. FIG. 10B is a cross-sectional view illustrating a room in which the subject 60 to be photographed by the photographing position specifying device 10c is present.
The shooting position specifying system includes a shooting position specifying device 10c and terminals 201-224. In this embodiment, as shown in FIG. 10A, the terminals 201 to 224 are installed in a lattice shape (4 rows × 6 columns) on the ceiling 41 in the building where the subject 60 exists, and are adjacent to each other. They are electrically connected to each other by a wiring 80. The wiring 80 supplies power to the terminals 201 to 224 and is used for wired communication between the imaging position specifying device 10c and the terminals 201 to 224.

Since the configuration of the terminals 201 to 224 according to the present embodiment is the same as that of the terminal 20a (FIG. 4) according to the first embodiment, detailed description thereof will be omitted. However, the control method of the control unit 22 of the terminals 201 to 224 is different from the control method of the control unit 22 of the terminals 20a to 20c according to the first embodiment.
The configuration of the imaging position specifying device 10c according to the present embodiment is the same as the configuration of the imaging position specifying device 10a (FIG. 2) according to the first embodiment, and thus detailed description thereof is omitted. However, since the control method of the control unit 16 of the photographing position specifying device 10c is different from the control method of the control unit 16 of the photographing position specifying device 10a, the control method will be described next.

Next, processing of the photographing position specifying system according to the second embodiment of the present invention will be described.
FIG. 11 is a flowchart showing an example of processing of the imaging position specifying device 10c according to the second embodiment of the present invention. Note that the processes in steps S302 to S304 and S309 to S314 are the same as the processes in steps S101, S102, S104, and S108 to S113 (FIG. 5) of the photographing position specifying device 10a according to the first embodiment, and therefore the details thereof. The detailed explanation is omitted.

First, the control unit 16 transmits a synchronization signal to all the terminals 201 to 224 via the wiring 80 (step S301). Here, the time which has transmitted the synchronization signal and t _0. Similar to the first embodiment, the terminal position information and the frequency information are recorded in the storage unit 17 in association with the terminal name, and the subject is photographed when a photographing instruction is input (steps S302 to S304). ). Control unit 22 of the terminal 201 to 224 via the communication unit 21, when receiving a synchronization signal from the imaging position determining device 10c, thereby transmitting sound waves from the wave transmission unit 23 at time t ₀ which has received the synchronization signal . Thereafter, the control unit 22 of the terminals 201 to 224 transmits sound waves from the sound wave transmission unit 23 at a predetermined interval (for example, 1 second) from the time t ₀ . In the present embodiment, different frequencies are allocated to the terminals 201 to 224, respectively.

12A to 12C are time charts showing a state in which the photographing position specifying device and the terminal are synchronized. Here, the synchronization means that sound waves are transmitted all at once from the sound wave transmission units 23 of all the terminals 201 to 224 at the time when the synchronization signal is transmitted from the imaging position specifying device 10c to all the terminals 201 to 224.
FIG. 12A shows the time acquired by the time acquisition unit 15 of the imaging position specifying device 10c. Here, the control unit 16 of the photographing position determination device 10c is transmitting a synchronization signal at time _{t 1} with respect to all terminals 201-224. The communication unit 21 of the terminal 201 to 224 is photographed position by receiving a synchronization signal from the identification device 10c, the time wave the wave transmission of the frequency assigned to the own terminal at a predetermined time t ₁ the acquisition unit 15 acquires Call from 23. In addition, a sound wave is transmitted from the sound wave transmission unit 23 every time a predetermined time t _x elapses from the time t ₁ .
In synchronization with t ₃ , t ₅ ,..., sound waves having a frequency assigned to the terminal are transmitted from the sound wave transmitting unit 23. In the imaging position specifying device 10c, the sound wave is received at a time t ₁ + t _d that is delayed by a predetermined time t _d from the time t ₁ at which the sound wave is transmitted from the terminal according to the distance from the terminal.

In step S305, the control unit 16 determines whether or not a sound wave has been received from the terminal. If no sound wave is received from the terminal, “NO” is determined in step S305, and the process waits until a sound wave is received. On the other hand, when the sound wave is received from the terminal, “YES” is determined in step S305, and the control unit 16 sets the sound wave reception time, which is the time when the sound wave receiving unit 14 receives the sound wave transmitted from the terminal, to the time It specifies based on the present | current time transmitted from the acquisition part 15. FIG. Further, the control unit 16 specifies from which terminal the sound wave received by the sound wave receiving unit 14 is transmitted based on the correspondence relationship between the terminal name and the frequency information stored in the storage unit 17 in step S101. And recorded in the storage unit 17 (step S306).
In step S307, the control unit 16 determines whether or not sound waves have been received from three or more terminals. If sound waves have not been received from three or more terminals, “NO” is determined in step S307, and the above-described steps S305 and S306 are repeated until sound waves are received from three or more terminals. On the other hand, if sound waves are received from three or more terminals, “YES” is determined in the step S307. Then, the time at which the sound wave receiving unit 14 receives sound waves from these three terminals is set to t _a , t _b , and t _c , respectively, and the process proceeds to step S308.
In step S308, using the times t _a , t _b , and t _c , the distances D _a , D _b , and D _c between the imaging position specifying device 10c and the three terminals are calculated from the equations (1) to (3). Is calculated. However, equation (1) as the time t ₀ in to Formula (3), using the time which has transmitted the synchronization signal from the communication unit 13 of the photographing position determination device 10c.
As in the first embodiment, when a recording instruction is input, a sound is recorded, the position of the imaging position specifying device 10b is calculated, orientation information and elevation angle information are acquired, and it corresponds to the captured image. In addition, it is stored in the storage unit 17 (steps S309 to 314).

  According to the above-described shooting position specifying system according to the second embodiment of the present invention, by transmitting a synchronization signal from the communication unit 13 of the shooting position specifying device 10c to the terminals 201 to 224, the terminals 201 to 224 can transmit the synchronization signal. A sound wave was transmitted at the same time. Then, the three-dimensional position of the photographing position specifying device 10c is calculated using the three sound waves that have reached the photographing position specifying device 10c earliestly among the sound waves periodically transmitted from the terminals 201-224. did. Thereby, once the processing for obtaining synchronization between the photographing position specifying device 10c and the terminals 201 to 224 is performed, the photographing position can be removed even if the wiring 80 connecting the photographing position specifying device 10c and the terminals 201 to 224 is removed. The position of the specific device 10c can be calculated.

In the second embodiment described above, when calculating the distance between the imaging position specifying device 10c and the terminal, only the sound propagation time is considered and the electricity propagation time is not considered. This is because the communication time by wire communication is negligibly small compared to the propagation time. In the second embodiment described above, sound waves are transmitted from the terminal by transmitting an electrical signal from the imaging position specifying device 10c to the terminal via a wire. In contrast, a sound wave may be transmitted from a terminal by transmitting an optical signal via an optical fiber.
In addition, according to the first and second embodiments described above, an image of a facility to be inspected taken by a person who performs the inspection by the imaging position specifying device and the inspection are performed at the time of inspecting indoor facilities. The voice recording the impression of the facility that is a human inspection target (for example, “rust is floating in the facility”) can be recorded in the storage unit of the photographing position specifying device in association with each other. Therefore, even when a person with little experience in equipment inspection browses the image, it is possible to refer to the sound recording the impressions of a person with a long experience in equipment inspection, and what the image was taken for Can be easily grasped.

In the first and second embodiments described above, the terminal is identified by changing the frequency of the sound wave transmitted from the terminal for each terminal. However, the terminal identification information is put on the sound wave transmitted from the terminal. Each terminal may be identified by transmission. Further, the frequency of sound waves transmitted from each terminal may be circulated and changed.
In the first and second embodiments described above, the case where the shooting position specifying device takes an image has been described. However, even when a moving image is shot, the above-described shooting position specifying system can be applied. it can.
In the first and second embodiments described above, the voice is recorded in the storage unit of the photographing position specifying device. However, the voice recorded in the storage unit is digitized, and the photographing position specifying device as an independent audio file. May be taken out of the CD player and played back by a general-purpose audio player such as a CD (Compact Disc) player. Further, the voice is converted into a character by a voice recognition device, and the information obtained by converting the voice into a character and the image information associated with the voice are overlapped or displayed side by side on a PC (Personal Computer) or the like. Also good.
In the first and second embodiments described above, the terminal that has received light from the light emitting unit 13 of the photographing position specifying device or the terminal that has received the synchronization signal immediately transmits a sound wave. The unit 14 receives a plurality of sound waves almost simultaneously, and the sound waves may cause interference. In order to prevent this, a different delay may be provided for each terminal, and this may be taken into account when calculating the distance.
In the first and second embodiments described above, the case where an image is captured by the image capturing unit 12 and the position where the image is captured is calculated. However, the present invention is not limited to this. For example, when the input unit 11 receives a predetermined instruction (for example, when the shutter is half-pressed), the position of the shooting position specifying device 10a is calculated and displayed without shooting by the shooting unit 12. You may do it.

  In the embodiment described above, the input unit 11, the imaging unit 12, the light emitting unit 13, the sound wave receiving unit 14, the time acquisition unit 15, the control unit 16, the storage unit 17, and the azimuth measurement in FIGS. 2, 4, and 8. Unit 18, elevation angle measuring unit 19, light receiving unit 21, control unit 22, sound wave transmitting unit 23, light receiving unit 50, recording unit 51, or a computer-readable recording medium for realizing a part of these functions The photographing position specifying system may be controlled by causing the computer system to read and execute a program recorded on the recording medium. Here, the “computer system” includes an OS and hardware such as peripheral devices.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

It is the schematic which shows an example of a structure of the imaging | photography position specific system by the 1st Embodiment of this invention. It is a block diagram which shows an example of a structure of the imaging | photography position specific device 10a (FIG. 1) by the 1st Embodiment of this invention. It is a figure which shows an example of the information previously recorded on the memory | storage part 17 of the imaging position specific device 10a (FIG. 1) by the 1st Embodiment of this invention. It is a block diagram which shows an example of a structure of the terminal 20a (FIG. 1) by the 1st Embodiment of this invention. It is a flowchart which shows an example of a process of the imaging position specific | specification apparatus 10a by the 1st Embodiment of this invention. It is a figure which shows an example of the information recorded on the memory | storage part 17 of the imaging position specification apparatus 10a (FIG. 1) by the 1st Embodiment of this invention. It is the schematic which shows an example of a structure of the imaging | photography position specific system by the modification of the 1st Embodiment of this invention. It is a block diagram which shows an example of a structure of the imaging position specific | specification apparatus 10b by the modification of the 1st Embodiment of this invention. It is a flowchart which shows an example of a process of the imaging position specific | specification apparatus 10b by the modification of the 1st Embodiment of this invention. It is the schematic which shows an example of a structure of the imaging | photography position specific system by the 2nd Embodiment of this invention. It is a flowchart which shows an example of a process of the imaging position specific | specification apparatus 10c by the 2nd Embodiment of this invention. It is a time chart which shows the state which synchronized the imaging position specific device and the terminal.

Explanation of symbols

10a to 10c ... imaging position specifying device, 11 ... input unit (imaging instruction acquisition unit, recording instruction acquisition unit), 12 ... imaging unit (imaging unit), 13 ... light emitting unit (electromagnetic wave emission unit) ), 14 ... sound wave receiving unit (sound wave receiving unit), 15 ... time acquisition unit (time acquisition unit), 16 ... control unit (distance calculation unit, position calculation unit), 17 ... storage unit (First storage means, second storage means), 18... Azimuth measurement section (azimuth measurement means), 19... Elevation angle measurement section (elevation angle measurement means), 20a to 20c. ..Light receiving part (electromagnetic wave receiving means), 22... Control part, 23 .. sound wave transmitting part (sound wave sending means), 30 a to 30 c .. tripod, 40. 60 ... Subject, 50 ... Light receiving part (electromagnetic wave receiving means), 51 ... Recording part (recording means) , 70 ... imaging apparatus, 201-224 ... terminal

Claims (8)

A shooting position specifying system comprising a shooting position specifying device and at least three terminals,
The photographing position specifying device includes:
Shooting instruction acquisition means for acquiring shooting instructions;
A recording instruction acquisition means for acquiring a recording instruction;
Photographing means for photographing a subject when the photographing instruction is acquired;
First storage means for previously storing the positions of the at least three terminals;
An electromagnetic wave radiation means for radiating an electromagnetic wave when the photographing instruction is acquired;
A sound wave receiving means for receiving sound waves transmitted from the at least three terminals;
Time acquisition means for acquiring the time of receiving the sound wave and the time of emitting the electromagnetic wave;
Distance calculating means for calculating the distance to each terminal based on the difference between the time when the sound wave is received and the time when the electromagnetic wave is radiated and the sound speed;
Position calculating means for calculating the position of the self-capturing position specifying device based on the distance to each terminal;
Recording means for recording sound when the recording instruction is acquired,
A second storage means for storing the photographing result by the photographing means, the recording result by the recording means, and the position of the self-photographing position specifying device calculated by the position calculating means;
The terminal
An electromagnetic wave receiving means for receiving an electromagnetic wave emitted by the electromagnetic wave emitting means;
A sound wave transmitting means for transmitting a sound wave when receiving the electromagnetic wave;
A photographing position specifying system characterized by comprising: A shooting position specifying system comprising a shooting position specifying device and at least three terminals,
The photographing position specifying device includes:
Synchronization signal transmitting means for transmitting a synchronization signal to the at least three terminals using wired communication;
Shooting instruction acquisition means for acquiring shooting instructions;
A recording instruction acquisition means for acquiring a recording instruction;
Photographing means for photographing a subject when the photographing instruction is acquired;
First storage means for previously storing the positions of the at least three terminals;
A sound wave receiving means for receiving sound waves transmitted from the at least three terminals;
Time acquisition means for acquiring the time of receiving the sound wave and the time of acquiring the imaging instruction;
Distance calculating means for calculating the distance to each terminal based on the difference between the time when the sound wave is received and the time when the synchronization signal is transmitted and the sound speed;
Position calculating means for calculating the position of the self-capturing position specifying device based on the distance to each terminal;
Recording means for recording sound when the recording instruction is acquired,
A second storage means for storing the photographing result by the photographing means, the recording result by the recording means, and the position of the self-photographing position specifying device calculated by the position calculating means;
The terminal
Synchronization signal receiving means for receiving a synchronization signal transmitted using the wired communication;
A sound wave transmitting means for transmitting a sound wave when the synchronization signal is received;
A photographing position specifying system characterized by comprising: The first storage means stores in advance the positions of the at least three terminals and identification information of the terminals in association with each other,
The sound wave receiving means receives sound waves transmitted from the at least three terminals and specifies from which terminal the sound waves are transmitted based on the identification information,
The imaging position specifying system according to claim 1 or 2, wherein the sound wave transmitting means transmits a sound wave including identification information of the terminal itself when the electromagnetic wave or the synchronization signal is received. The photographing position specifying device further includes an azimuth measuring unit that measures an azimuth for photographing the subject,
The said 2nd memory | storage means matches with the information image | photographed by the said imaging | photography means, and further memorize | stores the azimuth | direction measured by the said azimuth | direction measuring means, The said any one of Claim 1 to 3 characterized by the above-mentioned. Shooting position identification system. Further comprising an elevation angle measuring means for calculating the elevation angle of the self-portrait position specifying device at the time of shooting based on the acceleration of gravity,
The second storage unit further stores the elevation angle calculated by the elevation angle calculation unit in association with information captured by the imaging unit. Shooting position identification system. Shooting instruction acquisition means for acquiring shooting instructions;
A recording instruction acquisition means for acquiring a recording instruction;
Photographing means for photographing a subject when the photographing instruction is acquired;
First storage means for storing in advance the positions of at least three terminals;
An electromagnetic wave radiation means for radiating an electromagnetic wave when the photographing instruction is acquired;
A sound wave receiving means for receiving sound waves transmitted from the at least three terminals;
Time acquisition means for acquiring the time of receiving the sound wave and the time of acquiring the imaging instruction;
Distance calculating means for calculating the distance to each terminal based on the difference between the time when the sound wave is received and the time when the electromagnetic wave is radiated and the sound speed;
Position calculating means for calculating the position of the self-capturing position specifying device based on the distance to each terminal;
Recording means for recording sound when the recording instruction is acquired,
A second storage means for storing the photographing result by the photographing means, the recording result by the recording means, and the position of the self-photographing position specifying device calculated by the position calculating means;
A photographing position specifying device characterized by comprising: Synchronization signal transmitting means for transmitting a synchronization signal to the at least three terminals using wired communication;
Shooting instruction acquisition means for acquiring shooting instructions;
A recording instruction acquisition means for acquiring a recording instruction;
Photographing means for photographing a subject when the photographing instruction is acquired;
First storage means for storing in advance the positions of at least three terminals;
A sound wave receiving means for receiving sound waves transmitted from the at least three terminals;
Time acquisition means for acquiring the time of receiving the sound wave and the time of acquiring the imaging instruction;
Distance calculating means for calculating the distance to each terminal based on the difference between the time when the sound wave is received and the time when the synchronization signal is transmitted and the sound speed;
Position calculating means for calculating the position of the self-capturing position specifying device based on the distance to each terminal;
Recording means for recording sound when the recording instruction is acquired,
A second storage means for storing the photographing result by the photographing means, the recording result by the recording means, and the position of the self-photographing position specifying device calculated by the position calculating means;
A photographing position specifying device characterized by comprising: A shooting position specifying method using a shooting position specifying device and at least three terminals,
A shooting instruction acquisition process of acquiring a shooting instruction by the shooting position specifying device;
Recording instruction acquisition process for acquiring a recording instruction by the photographing position specifying device;
A shooting process of shooting the subject by the shooting position specifying device when the shooting instruction is acquired;
A first storing step of storing the positions of the at least three terminals in advance by the photographing position specifying device;
An electromagnetic wave emission process in which an electromagnetic wave is radiated by the photographing position specifying device when the photographing instruction is acquired;
An electromagnetic wave receiving process in which the electromagnetic waves radiated in the electromagnetic wave emitting process are received by the at least three terminals;
A sound wave transmitting process for transmitting sound waves by the at least three terminals when receiving the electromagnetic waves;
A sound wave receiving process of receiving sound waves transmitted from the at least three terminals by the imaging position specifying device;
A time acquisition process in which the time at which the sound wave is received and the time at which the imaging instruction is acquired are acquired by the imaging position specifying device;
A distance calculation process for calculating the distance to each terminal based on the difference between the time when the sound wave is received and the time when the electromagnetic wave is radiated and the sound speed;
A position calculation process in which the position of the self-capturing position specifying device is calculated by the shooting position specifying device based on the distance to each terminal;
A recording process of recording audio by the shooting position specifying device when the recording instruction is acquired;
A second storage process in which the shooting position specifying apparatus stores the shooting result in the shooting process, the recording result in the recording process, and the position of the self-shooting position specifying apparatus calculated in the position calculating process in association with each other;
An imaging position specifying method characterized by comprising:

Images