JP2013026883A - Imaging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging system for imaging a subject moving at a high speed in a wide region.SOLUTION: An imaging system comprises: a plurality of radio communication parts provided within a predetermined specific region and each of which has a small region, in which radio communication is possible, within the specific region; a plurality of transmitters which are respectively attached to a plurality of subjects in the specific region, and transmit identification information for identifying the plurality of subjects; and a field setting part which sets a depth of field in a region including a small region corresponding to a radio communication part receiving identification information of a subject to be imaged by the imaging device out of the plurality of subjects, and outputs the set depth of field to the imaging device.

Description

  The present invention relates to an imaging system.

There has been proposed a photographing apparatus that attaches a position detection unit to a player who is a subject and automatically captures the position of the player (see Patent Document 1).
[Patent Document 1] Japanese Patent Application Laid-Open No. 2002-314851

  However, since it takes time to capture the position of the competitor and to set the shooting conditions of the subject at that position, it has been difficult to reliably photograph the subject moving at high speed.

  As one aspect of the present invention, a plurality of wireless communication units that are installed in a predetermined specific area and each have a small area capable of wireless communication in the specific area, and attached to each of a plurality of subjects in the specific area A plurality of transmitters for transmitting identification information for identifying a plurality of subjects, a focusing unit for focusing on a region where the subject exists, and identification information for a subject to be imaged using an imaging device among the plurality of subjects. An imaging system is provided that includes a field setting unit that sets a depth of field including a small area of a received wireless communication unit and outputs the depth to an imaging apparatus.

  The above summary of the present invention does not enumerate all necessary features of the present invention. A sub-combination of these feature groups can also be an invention.

1 is a schematic perspective view showing an external appearance of an imaging system 100. FIG. 1 is a block diagram of an imaging system 100. FIG. 2 is a block diagram of an RFID tag 140. FIG. 3 is a schematic perspective view showing the arrangement of detection antennas 130. FIG. 3 is a schematic plan view showing a detection area of a detection antenna 130. FIG. 3 is a block diagram of an object scene setting unit 120. FIG. 3 is a conceptual diagram illustrating an object scene set in the imaging apparatus 110. FIG. It is a figure which illustrates the table of the field setting part. 2 is a flowchart illustrating a control procedure of the imaging system 100. 1 is a schematic perspective view of an imaging system 101. FIG.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is a schematic perspective view showing the external appearance of the imaging system 100 using the handball court 210 as an example. In the handball court 210, a part of the imaging system 100 appears on the appearance.

  The handball court 210 has a rectangular specific area surrounded by a goal line 212 having a length of 20 m and a side line 216 having a length of 40 m. On the handball court 210, seven teams of one goalkeeper 222 and six court players 224 compete to throw one ball 230 into the opponent's goal 214.

  As part of the imaging system 100 that captures such a competition, the imaging device 110 is disposed outside the handball court 210. A telephoto lens 114 is attached to the imaging device 110 and is fixed by a tripod 116.

  The imaging device 110 includes a communication antenna 112 and has a function of setting a focusing distance and an aperture value by a radio signal received from the outside. Such a function may be provided in the imaging device 110 in advance or may be realized by an additional peripheral device.

  Further, the imaging device 110 is arranged away from the side line 216. This prevents contact with the court player 224 and the ball 230 lined out from the side line 216 during the competition.

  The imaging system 100 also includes a field setting unit 120 disposed behind the goal 214 and having a communication antenna 122. The back of the goal 214 is unlikely to contact the court player 224 and the ball 230. The structure and function of the scene setting unit 120 will be described with reference to other drawings.

  In the handball court 210 during the competition, the two goalkeepers 222, the twelve court players 224, the referee 226 and the ball 230 move in a dizzying manner. For this reason, when a specific subject enters the field of view of the telephoto lens 114 having a narrow angle of view, it is difficult to take a picture with a manual operation with good timing.

  FIG. 2 is a block diagram of the imaging system 100. The imaging system 100 includes a detection antenna 130 and an RFID (Radio_Frequency_IDentification) tag 140 in addition to the imaging device 110 and the scene setting unit 120.

The RFID tag 140 moves on the handball court 210 such as the goalkeeper 222 (P ₁ ), the court player 224 (P _{2 to} P ₇ ), the referee 226 (R _{1 to} R ₃ ) including the line judge, and the ball 230 (B). It is attached individually to every element that Further, the RFID tag 140 may be attached to other elements that may enter the angle of view of the imaging device 110, such as a reserved player, a coach, or a manager, in addition to the illustrated one.

  Furthermore, the RFID tag 140 may be individually attached to an element other than the competitor, such as a ground keeper, according to the type of competition. In this manner, the RFID tag 140 is individually attached to every moving body associated with the handball court 210.

  The detection antennas 130 are arranged at a plurality of locations on the handball court 210. Each of the plurality of detection antennas 130 is connected to the field setting unit 120.

  The scene setting unit 120 communicates with the imaging device 110 via the communication antenna 122. Thereby, the field setting unit 120 notifies the imaging device 110 of the setting value. The field setting unit 120 can acquire values such as specifications and settings from other devices including the imaging device 110.

  FIG. 3 is a block diagram of the passive RFID tag 140. The RFID tag 140 includes a detected antenna 142 and an RF RFID chip 144. The detected antenna 142 transmits and receives a radio signal to and from the detection antenna 130 connected to the RFID reader / writer. The radio signal can be either an electromagnetic induction method or a radio wave method.

  The RFID chip 144 includes a rectification unit 141, a processing unit 143, and an identification information storage unit 145, and operates without mounting a power source. That is, the RFID chip 144 receives a preamble signal that is an unmodulated carrier transmitted from the detection antenna 130 through the detected antenna 142.

  The rectifying unit 141 rectifies the received non-modulated carrier to generate a direct current, and activates the processing unit 143 using the direct current as a power source. The processing unit 143 demodulates a command transmitted from the detection antenna 130 following the preamble, and operates according to the command.

  The identification information storage unit 145 stores unique identification information given to each RFID chip 144. Upon receiving the command, the processing unit 143 reads the identification information stored in the identification information storage unit 145, returns the identification information to the detection antenna 130 on the reflected wave of the unmodulated carrier. Thus, the detection antenna 130 acquires identification information of the RFID tag 140 that has entered the detection area.

  The RFID chip 144 has a size of about several millimeters and a weight of about several grams. The detected antenna 142 is formed of a patterned metal foil or the like. Therefore, the RFID tag 140 is small and light and can be incorporated into clothing, shoes, etc. of the goalkeeper 222, court player 224, referee 226, and can be easily attached to the ball 230, etc. Note that in the case where a power source such as a dry battery can be attached together, an active or semi-active RFID tag 140 that spontaneously transmits an identification signal may be used.

  FIG. 4 is a schematic perspective view showing the arrangement of the detection antennas 130. A plurality of detection antennas 130 are arranged in the handball court 210 at intervals in the shooting range of the imaging device 110.

In the illustrated example, detection antennas 130 (A _{1 to} A ₂₁ ) arranged in three rows in parallel with the goal line 212 in front of the imaging device 110 and detection antennas 130 (A ₂₂ ) arranged in the goal 214. And are laid. Each of the detection antennas 130 is buried shallow in the ground and cannot be seen from the surface of the handball court 210.

  As the detection antenna 130, an omni-type coil antenna can be preferably used. Thereby, a substantially circular detection region can be formed around the detection antenna 130. Further, in consideration of embedding in the basement of the handball court 210, the detection antenna 130 preferably has a flat plate shape and high strength.

  FIG. 5 is a schematic plan view showing the function of the detection antenna 130. Elements that are the same as those in the other drawings are given the same reference numerals, and redundant descriptions are omitted.

Each of the detection antennas 130 (A _{1 to} A ₂₂ ) has detection regions R _{1 to} R ₂₂ having a circular shape centered on itself within a small region. Inside the detection regions R _{1 to} R ₂₂ , the detection antenna 130 (A _{1 to} A ₂₂ ) can receive the identification information by causing the unmodulated carrier signal to reach the RFID chip 144. For example, when a passive RFID tag 140 operating in a 900 MHz band is used, a substantially circular detection region R _{1 to} R ₂₂ having a diameter of several meters is formed around the detection antenna 130 (A _{1 to} A ₂₂ ). Is done.

In the imaging system 100, detection areas R _{1 to} R ₂₂ having a diameter of several meters can be spread over a certain area of the handball court 210. As a result, when the RFID tag 140 enters the vicinity of the goal 214 on the right side in the drawing and about ¼ of the handball court 210, the RFID tag 140 is connected to any one of the detection antennas 130 (A _{1 to} A ₂₂ ).

Each of the detection regions R _{1 to} R ₂₂ partially overlaps with the adjacent detection regions R _{1 to} R ₂₂ . Therefore, when the RFID tag 140 enters the overlapping area, one RFID tag 140 is detected by the plurality of detection antennas 130 (A _{1 to} A ₂₂ ). For this reason, the position of the RFID tag 140 can be specified at a finer interval than the arrangement interval of the detection antennas 130.

As described with reference to FIG. 3, when the detection antenna 130 (A _{1 to} A ₂₂ ) detects the RFID tag 140 in the detection region (R _{1 to} R ₂₂ ), the identification information of the RFID tag 140 is Read out. Thereby, the scene setting unit 120 detects that the RFID tag 140 having specific identification information has entered the detection areas R _{1 to} R ₂₂ corresponding to the specific detection antennas 130 (A _{1 to} A ₂₂ ). To do.

  FIG. 6 is a block diagram of the scene setting unit 120. The scene setting unit 120 includes a communication antenna 122, a wireless communication unit 124, a processing unit 126, a multi-channel reader / writer 127, and a setting value table 128.

  The multi-channel reader / writer 127 is coupled to all the detection antennas 130 and detects the RFID tag 140 when the RFID tag 140 enters the detection area of any of the detection antennas 130. Further, the multi-channel reader / writer 127 acquires the identification information stored in the RFID tag 140 from the detected RFID tag 140.

  The processing unit 126 generates a setting value to be set in the imaging device 110 according to the position of the detection antenna 130 that has detected the RFID tag 140. The setting value may be generated each time, or a setting value to be set in the imaging apparatus may be extracted from the values stored in the setting value table 128. The set value includes, for example, an in-focus distance and an aperture value set for the telephoto lens 114 attached to the imaging device 110.

  The communication antenna 122 transmits and receives wireless signals to and from the communication antenna 112 of the imaging device 110, and the processing unit 126 establishes wireless communication with the imaging device 110. Thereby, when the processing unit 126 calculates the set value, information such as the focal length of the telephoto lens 114 is acquired from the imaging device 110 through the wireless communication unit 124. When the generated setting value is set in the imaging device 110, the setting value is instructed to the imaging device 110 through the wireless communication unit 124.

FIG. 7 is a diagram for explaining the setting values stored in the setting value table 128. Here, one detection antenna 130 (A ₁₁ ) will be described as an example, but the corresponding set values are set for the other detection antennas (A _{1 to} A ₁₀ , A _{12 to} A ₂₂ ). Stored in

As shown in FIG. 7, when the detection area R ₁₁ of the detection antenna A ₁₁ located on the optical axis X of the imaging device 110 is expressed as a distance from the imaging surface S, the distance from the distance D _f to the distance _Dr Located between. Therefore, in the setting value table 128, as the detection area R ₁₁ in the depth of field of the image pickup device 110 is included, the focus distance and the aperture value set in the image pickup device 110, it is stored as a set value.

  That is, the depth of field of the imaging device 110 depends on the focal length of the telephoto lens 114, the aperture value, and the allowable circle of confusion. Therefore, the set value can be determined as follows, for example.

First, the distance to the center position of the detection area A ₁₁ that is known when the detection antenna 130 (A ₁₁ ) is arranged is determined as one of the set values as the in-focus distance F of the telephoto lens 114. Next, an aperture value that is included in the depth of field from the distance D _f to the distance D _r before and after the in-focus position F is determined as another set value.

By setting the in-focus distance F and the aperture value thus determined in the imaging device 110, the detection region R ₁₁ of the detection antenna 130 (A ₁₁ ) is included in the depth of field of the imaging device 110, and the imaging device 110. is ready to clearly photographing the object in the detection area R _11. Therefore, in the setting value table 128, these in-focus distance and aperture value corresponding to the detection antenna 130 (A ₁₁ ) are stored as setting values.

Note that the depth of field of the telephoto lens 114 is generally narrower on the near side and wider on the far side with respect to the in-focus position. Therefore, if the detection area A ₁₁ in a state of being focused at the center of the detection area A ₁₁ was contained in the depth of field, depth of field that is formed from the distance d _f shown in FIG until d _r is wider than the detection area _{a 11} in the back side of the detection area _{a 11.}

On the other hand, when shooting a moving subject, it is preferable that the shutter speed of the imaging device 110 is faster. For this reason, it is preferable to further open the aperture when photographing with the imaging device 110. Therefore, the field setting unit 120 calculates in advance a combination of an in-focus distance and an aperture value that substantially matches the depth of field for each of the detection areas A _{1 to} A ₂₂ and stores the combination in the setting value table 128. May be. Thereby, the imaging device 110 set with the determined value can perform shooting at a higher shutter speed by opening the aperture.

  FIG. 8 is a diagram illustrating a part of the contents of the setting value table 128. As noted in the figure, the setting value table 128 is a setting value (setting value table) for obtaining a depth of field of 3 m in increments of 0.0333 mm for a telephoto lens having a focal length of 300 mm. (Focal length and set aperture value) are stored.

The imaging device 110 is assumed to be fixed at a position 10 m away from the side line 216 of the handball court 210. 8 also shows the position of the depth of field (d _{f to} d _r ) when the set value is set in the imaging device 110.

In the illustrated portion of the setting value table 128, detection areas R _{8 to} R ₁₄ are included in the object field of the imaging device 110 for each detection antenna 130 (A _{8 to} A ₁₄ ) positioned on the optical axis X of the telephoto lens 114. Stores the setting value for inclusion in the depth. Therefore, when the detection antenna 130 that has detected the RFID tag 140 is specified, the processing unit 126 can immediately determine the set value without a load of calculation processing.

In the above example, the setting values corresponding to the detection areas R _{8 to} R ₁₄ in increments of 3 m are stored in accordance with the interval of the detection antenna 130. However, when one RFID tag 140 is detected simultaneously on a plurality of adjacent detection antennas 130, it can be seen that the RFID tag 140 is located between the detection antennas 130. Therefore, the setting value corresponding to the 1.5 m increments may be stored in the setting value table 128 to increase the accuracy of the setting value.

Next, a specific description will be given with reference to FIGS. 7 and 8 together. When one detection antenna 130 (A ₁₁ ) detects the RFID tag 140 having the identification information of the court player 224 (P ₂ ) designated in advance as a subject, the scene setting unit 120 The set value is set so that the depth of field includes the detection region R ₁₁ of the detection antenna 130 (A ₁₁ ).

That is, when the detection antenna 130 (A ₁₁ ) detects the RFID tag 140, the processing unit 126 of the scene setting unit 120 sets the setting value to be set in the imaging device 110 from the line A ₁₁ of the setting value table 128. The in-focus distance F is 20.39 m, and the aperture value is 9.7. If you configure these settings to the image pickup device 110, between 1899.04cm~2200.17cm from the imaging surface S becomes the depth of field, the detection area _{R 11} is the depth of field located from 19m to 22m Included.

The processing unit 126 instructs the setting value determined in this way to the imaging device 110 through the wireless communication unit 124. As a result, the imaging apparatus 110 can capture a clear image of the court player 224 (P ₁ ) located in the detection region R ₁₁ by exposing the imaging element without performing ranging and focusing. Become.

Further, even if the court player 224 moves in the time lag from detection by the detection antenna 130 (A ₄ ) to photographing, if the position of the court player 224 after movement is within the detection area of the detection antenna 130 (A ₄ ), The court player 224 can still be photographed clearly.

  Whether or not shooting is performed in this state may be left to the judgment of a photographer who operates the imaging device 110, or the imaging device 110 may automatically perform shooting. Alternatively, the imaging device 110 may generate a notification sound notifying that the camera is ready to shoot and prompt the photographer to shoot.

  Thus, when shooting with the imaging device 110 for which the setting value is set by the field setting unit 120, the autofocus function of the imaging device 110 itself does not operate. The automatic exposure function of the imaging apparatus 110 also calculates exposure conditions including the shutter speed, ISO sensitivity, and the like in the aperture priority mode on the premise of the aperture value set by the field setting unit 120. Therefore, the time lag from when the release button of the imaging device 110 is pressed until the shooting is completed is also small.

  FIG. 9 is a flowchart illustrating an example of a control procedure of the imaging system 100. Control of the imaging system 100 is mainly executed by the field setting unit 120.

  In this example, the scene setting unit 120 waits until the RFID tag 140 of the court player 224 is detected in any detection area of the detection antenna 130 (step S101: NO). When the RFID tag 140 of the court player 224 is detected by any of the detection antennas 130 (step S101: YES), the scene setting unit 120 detects that the detected identification information is the RFID tag 140 attached to the subject designated in advance. It is checked whether or not it is the identification information (step S102).

  When the detected identification information is not designated (step S102: NO), the scene setting unit 120 is again in a standby state, and then waits until the RFID tag 140 having the identification information of the court player 224 is detected. To do. When the detected identification information is identification information for specifying the designated court player 224 (step S102: YES), the scene setting unit 120 detects in the detection region where the RFID tag 140 having the identification information is detected. Further, it is checked whether or not the RFID tag 140 having the identification information of the ball 230 is detected (step S103).

  When the identification information of the ball 230 is not detected in the detection area (step S103: NO), the scene setting unit 120 is again in a standby state, and then the RFID tag 140 having the identification information of the court player 224 is detected. Wait until When the specified identification information of the court player 224 and the identification information of the ball 230 are detected in the same detection area (step S103: YES), the scene setting unit 120 detects that the RFID tag 140 is detected. In order to set the depth of field including the region in the imaging apparatus 110, the setting value is extracted with reference to the setting value table 128 (step S104).

  Next, the scene setting unit 120 sets the extracted setting value in the imaging device 110 (step S105). As a result, the imaging device 110 is in a state in which the subject located within the detection area can be clearly photographed. Subsequently, the scene setting unit 120 monitors whether or not the release button for instructing the shooting timing has been pressed in the imaging device 110 (step S106).

  Further, the field setting unit 120 checks whether or not the RFID tag 140 initially detected is still detected in the detection region until the release button of the imaging device 110 is pressed (step S107). When the RFID tag 140 remains in the detection area (step S107: YES), the scene setting unit 120 continues monitoring whether or not the release button is pressed down in the imaging device 110.

  In step S107, when the RFID tag 140 is not detected from the original detection area (step S107: NO), the scene setting unit 120 waits again until the RFID tag 140 of the court player 224 is detected (step S107: NO). Step S101: NO).

  On the other hand, when it is detected in step S106 that the release button of the imaging device 110 has been depressed (step S106: YES), the field setting unit 120 confirms execution of shooting by the imaging device 110, and then re-coats. It waits until the RFID tag 140 of the player 224 is detected (step S101: NO). Hereinafter, while the imaging system 100 continues the imaging mode, the above-described series of control is repeatedly executed.

  In the above control procedure, detection of the identification information of the court player 224 is set as a trigger for starting control (step S101), specific identification information is designated (step S102), and the same detection area It is not an essential condition that the ball 230 is detected as a condition (step S103).

  That is, these conditions are preset by the user as a control procedure of the field setting unit 120. Therefore, for example, the individual of the court player 224 may not be specified, and the court player 224 and the ball 230 may be simultaneously detected in one detection area. In addition, when the number of court players 224 detected in one detection area is too large, a condition for stopping shooting may be set. Furthermore, a specific court player 224 may be continuously detected in a plurality of detection areas, and a detection area to be moved next may be predicted.

  Furthermore, these conditions are merely examples, and other conditions may be set or canceled, or a plurality of conditions may be added simultaneously. Thus, the conditions set in the field setting unit 120 can be variously changed according to the type of competition, the purpose of shooting, and the like. However, regardless of which condition is set, the imaging apparatus 110 performs shooting at the depth of field set by the field setting unit 120.

  The setting to the field setting unit 120 as described above may be performed using the operation unit of the imaging device 110. That is, since the imaging apparatus 110 and the scene setting unit 120 communicate bidirectionally, it is also possible to input a user instruction to the scene setting unit 120 using the operation unit and the display unit of the imaging apparatus 110 as a user interface. . Further, another electronic device such as a personal computer may be connected to the scene setting unit 120 and the setting of the scene setting unit 120 may be input.

  In addition, before the imaging system 100 is operated, the operations of the imaging device 110 and the field setting unit 120 may be calibrated. That is, by specifying some of the detection antennas 130 in advance and placing the RFID tag 140 in the detection area of the detection antenna 130 for detection, the detection accuracy of the object field setting unit 120 is verified and corrected. be able to. Thereby, the imaging system 100 can be operated with higher accuracy.

  FIG. 10 is a schematic perspective view of another imaging system 101. Elements common to the imaging system 100 are denoted by the same reference numerals, and redundant description is omitted.

  In the imaging system 101, the detection antenna 130 is disposed on the entire handball court 210 surrounded by the goal line 212 and the side line 216. In addition, the detection antenna 130 is arranged outside the handball court 210 along the goal line 212 and the side line 216.

  Further, in the imaging system 101, a plurality of imaging devices 111 and 113 that move around the handball court 210 are arranged. An RFID tag 140 having identification information of the imaging devices 111 and 113 themselves is individually attached to each of the plurality of imaging devices 111 and 113. In addition, the imaging devices 111 and 113 include gyro sensors, detect which direction they are facing, and notify the scene setting unit 120.

  In the imaging system 101 as described above, the positions of the imaging devices 111 and 113 are detected by the detection antenna 130 and the RFID tag 140 as well as the positions of the court player 224 and the ball 230 that are subjects. Accordingly, the scene setting unit 120 detects the position and direction of the imaging devices 111 and 113 and the position of the subject together, and calculates a setting value for setting the scene in the area including the subject. The calculated set values are transmitted and set to the imaging devices 111 and 113, respectively.

  Thereby, in the imaging system 101, the imaging devices 111 and 113 can freely move around the handball court 210. Further, when the RFID tag 140 is detected by the detection antenna 130 within the imaging range of the imaging devices 111 and 113, the depth of subject including the detection area of the detection antenna 130 is set to the imaging devices 111 and 113. A value is generated. The imaging devices 111 and 113 to which the generated set values are set can clearly photograph the subject to which the detected RFID tag 140 is attached with a small time lag.

  In the above example, the handball court 210 has been described as an example, but it is needless to say that the use of the imaging systems 100 and 101 is not limited to shooting in a handball game. Needless to say, other ball games can also be applied to shooting of athletics, winter sports, motor sports, and the like. Further, the present invention is not limited to sports photography, and can be widely applied when the RFID tag 140 can be attached to a subject and the detection antenna 130 can be installed by predicting the moving path of the moving subject. Therefore, it can also be used for photographing railways, airplanes, and the like.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

  The order of execution of each process such as operations, procedures, steps, and stages in the apparatus, system, program, and method shown in the claims, the description, and the drawings is particularly “before” or “prior to”. It should be noted that the output can be realized in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the description, and the drawings, even if it is described using “first”, “next”, etc. for convenience, it means that it is essential to carry out in this order. It is not a thing.

100, 101 Imaging system, 110, 111, 113 Imaging device, 112, 122 Communication antenna, 114 Telephoto lens, 116 Tripod, 120 Field setting unit, 124 Wireless communication unit, 126, 143 Processing unit, 127 Multi-channel reader / writer , 128 setting value table, 130 detection antenna, 140 RFID tag, 141 rectification unit, 142 detected antenna, 144 RFID chip, 145 identification information storage unit, 210 handball court, 212 goal line, 214 goal, 216 side line, 222 goal keeper 224 court players, 226 referees, 230 balls

Claims (5)

A plurality of wireless communication units installed in a predetermined specific area, each having a small area capable of wireless communication in the specific area;
A plurality of transmitters that are attached to each of a plurality of subjects in the specific area and that transmit identification information for identifying the plurality of subjects;
A field setting unit configured to set a depth of field including a small area of a wireless communication unit that has received identification information of a subject to be imaged using an imaging device among the plurality of subjects and to output to the imaging device; An imaging system provided. The imaging device includes one of the plurality of transmitters,
The imaging system according to claim 1, wherein the field setting unit sets a depth of field in consideration of a position of the imaging device.   The imaging system according to claim 1, wherein the field setting unit is calibrated with reference to an actual measurement value from the imaging device to the small area.   The depth-of-field setting unit includes depth-of-field information that includes the small area, the focal length of the optical system of the imaging device, and depth-of-field information associated with the position of the small area from the imaging device to the subject. The imaging system according to claim 1 or 2, wherein the imaging system is calibrated with reference to an actual measurement value from the stored area to the small area.   When at least two of the plurality of wireless communication units receive the identification information, the scene setting unit sets a scene that equally includes two small areas corresponding to the two wireless communication units The imaging system according to any one of claims 1 to 4.

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