JP2017112504A - Imaging apparatus, visible light communication identification information registration method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To track a subject with high accuracy even when an optical tag cannot be recognized.SOLUTION: A light-emitting tag 10 is mounted on the wrist of a user or the like. In the light-emitting tag 10, a CPU 13 emits a visible light including a color pattern corresponding to first identification information 11a from a light-emitting part 14. In an imaging apparatus 20, a CPU 27 receives, by an imaging part 22, the visible light that is emitted from the light-emitting part 14 of the optical tag 10, acquires the first identification information included in the visible light, and registers the acquired first identification information and second identification information 24a that is different from the first identification information 11a and is information for image recognition, while associating them with each other. When photographing a moving picture, a position of a subject is identified based on the first identification information 11a and/or the second identification information 24a, and the moving picture is photographed while tracking the subject.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an imaging apparatus, a visible light communication identification information registration method, and a program.

  Conventionally, in a tracking system using visible light communication in a digital camera, it is necessary to register an optical tag to be tracked. Basically, the subject is tracked by recognizing and tracking the registered optical tag (see, for example, Patent Documents 1, 2, 3, and 4).

JP2015-50697A JP 2010-147762 A JP 2010-44516 A JP 2001-34764 A

  However, the above-described conventional imaging apparatus has a problem in that the optical tag cannot be correctly tracked when the optical tag is hidden or when another object is erroneously recognized.

  Accordingly, an object of the present invention is to track a subject with high accuracy even when an optical tag cannot be recognized.

  An imaging apparatus according to the present invention is an imaging apparatus that receives visible light including arbitrary information emitted by a light emitting unit with an imaging unit, and acquires information included in the visible light, prior to visible light communication, Recording means for recording second identification information different from the first identification information associated with the first identification information and the first identification information, wherein the first identification information is the visible information It is information indicating the light emitting unit itself contained in light, and the second identification information is information for image recognition different from the visible light communication.

  In the visible light communication identification information registration method according to the present invention, prior to visible light communication, the first identification information indicating the light emitting unit itself included in the visible light emitted from the light emitting unit and an image different from the visible light communication The second identification information, which is information for recognition, is registered in association with each other.

  Prior to visible light communication, the program according to the present invention records first identification information and second identification information different from the first identification information associated with the first identification information. First detection means for detecting a position of visible light including information relating to the first identification information, a computer of an imaging device that includes means for acquiring information included in visible light emitted by the light emitting unit, A program that functions as second detection means for detecting a position of a subject on which the light emitting unit is mounted based on second identification information, wherein the first identification information is the visible information It is information indicating the light emitting unit itself contained in light, and the second identification information is information for image recognition different from the visible light communication.

  According to the present invention, the subject can be tracked with high accuracy even when the optical tag cannot be recognized.

1 is a block diagram illustrating a configuration of an imaging system 1 according to an embodiment of the present invention. It is a block diagram which shows the structure of the optical tag 10 by this embodiment, and the imaging device 20. FIG. It is a conceptual diagram which shows an example of the color pattern which the optical tag 10 by this embodiment light-emits. It is a flowchart for demonstrating operation | movement of the optical tag 10 by this embodiment. It is a flowchart for demonstrating operation | movement (registration process) of the imaging device 20 by this embodiment. It is a conceptual diagram for demonstrating operation | movement (registration process) of the imaging device 20 by this embodiment. 5 is a flowchart for explaining an operation (imaging process) of the imaging apparatus 20 according to the present embodiment. It is a conceptual diagram for demonstrating operation | movement of the imaging | photography system 1 by this embodiment, (a) is a tracking operation | movement using 1st identification information (optical tag 10), (b) is 2nd identification information (clothing). The tracking operation using (color) is shown.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

A. Configuration of Embodiment FIG. 1 is a block diagram showing a configuration of an imaging system 1 according to an embodiment of the present invention. In FIG. 1, a photographing system 1 includes an optical tag 10 attached to a user's (subject) wrist or the like, and an imaging device 20 for photographing the subject. As shown in FIG. 1, the optical tag 10 has a removable belt-shaped main body, and can be attached to, for example, the wrist of a user (subject) as shown.

  In addition to the wrist, it may be attached to play equipment (a racket for tennis, a golf club for golf, etc.). Alternatively, it may be a structure that is attached to the shoulder or chest part that is lowered from the neck. On the outer peripheral surface of the optical tag 10, a light emitting unit 14 and a light emitting window 15 are provided so as to irradiate light to the outside, and a power switch 16 is provided so that the attached user can operate.

  As illustrated in FIG. 1, the imaging device 20 includes a housing 20 a in which an optical lens unit 21 and an imaging unit 22 are provided, and a housing 20 b in which a display unit 25 is provided. The housing 20a is provided with a handle portion 20c so that it can be hooked and fixed on a wire mesh or the like.

  2A and 2B are block diagrams illustrating configurations of the optical tag 10 and the imaging device 20 according to the present embodiment. FIG. 3 is a conceptual diagram showing an example of a color pattern emitted by the optical tag 10 according to the present embodiment. In FIG. 2A, the optical tag 10 includes a memory 11, a timing generator 12, a CPU 13, a light emitting unit 14, and a light emitting window 15. The memory 11 stores first identification information 11a corresponding to a preset color pattern P. As the color pattern P, red (R), green (G), and blue (B) are arranged in time series. In this embodiment, for example, as shown in FIG. 3, red (R) → green (G) → Red (R) → Blue (B) →... As described above, by using the color pattern P made up of the color components RGB as visible light communication, it is excellent in visibility by the user, and the imaging device 20 can easily detect it from the captured image.

  The timing generator 12 generates a stable clock signal CK having a predetermined period. The CPU 13 sequentially extracts the first identification information 11a from the memory 11 in synchronization with the clock signal CK from the timing generator 12, and extracts the first identification information 11a extracted after the header information indicating data transmission. Is supplied to the light emitting unit 14.

  The light-emitting unit 14 includes RGB light-emitting elements (LEDs: Light Emitting Diodes). The light emitting unit 14 outputs a color pattern P whose color changes with time in accordance with the first identification information 11 a through the light emission window 18 in synchronization with the clock signal CK from the timing generator 12. In this embodiment, as shown in FIG. 3, the light emission time of each color is set to 0.1 second. The imaging device 20 described later recognizes the optical tag 10 by receiving the color pattern P whose color changes with time.

  2B, the imaging device 20 includes an optical lens unit 21, an imaging unit 22, a flash memory 23, a memory 24, a display unit 25, a key input unit 26, and a CPU 27. The imaging unit 22 is configured by a two-dimensional image sensor such as a charge-coupled devices (CCD) or a complementary metal-oxide semiconductor (CMOS), for example.

  The imaging unit 22 converts an image captured through the optical lens unit 21 at a predetermined frame rate into an electrical frame image signal and sequentially stores it in the flash memory 23. In particular, in the present embodiment, the imaging device 20 can perform partial reading (trimming) of an arbitrary size from an image captured via the optical lens unit 21. The flash memory 23 stores frames (images) from the imaging unit 22 in time series, or stores frames (images) that have been partially read (trimmed) of an arbitrary size in time series. The memory 24 includes a ROM (Read Only Memory) that stores programs and the like, and a RAM (Random Access Memory) that is used as a working memory of the CPU 27 described later.

  In particular, in the present embodiment, the memory 24 includes first identification information (data corresponding to a color pattern) 11a for identifying the optical tag 10 and the light to track the subject on which the optical tag 10 is mounted. The second identification information 24a acquired from the image information of the subject wearing the tag 10 is associated and stored. The second identification information 24a includes the size of the subject (height, physique, etc.), the characteristics of the face of the subject (position of the eyes, nose and mouth, hair color, hairstyle, etc.), the size of the subject, The position of the light emitting tag 10, the representative color worn by the subject (for example, the color of clothes), the distance from the subject's face to the light emitting tag 10, the number of light emitting tags attached to the subject, etc. is there.

  The display unit 25 includes a liquid crystal display, an organic EL display, and the like. The display unit 25 displays a captured image captured by the imaging unit 22 via the optical lens unit 21 and displays a moving image when the captured moving image is reproduced. The key input unit 26 includes a photographing button, various setting keys, and the like, and inputs an instruction operation by a user for controlling the operation of the imaging apparatus 20. The key input unit 26 may include a touch panel superimposed on the display unit 25.

  The CPU 27 controls the operation of each unit described above by executing a predetermined program. Specifically, the CPU 27 associates and registers the first identification information 11a of the optical tag 10 and the second identification information 24a acquired from the image information of the subject, and the first tag of the optical tag 10 at the time of shooting. Based on the identification information 11a and the second identification information 24a acquired from the image information of the subject, a photographing process for performing photographing while tracking the subject is executed.

  In particular, in the registration process, when the CPU 27 detects the predetermined color pattern emitted from the optical tag 10 from the image captured by the imaging unit 22, the CPU 27 obtains the first identification information 11a obtained by decoding the color pattern. Save in the memory 24. At this time, the CPU 27 analyzes the captured image captured by the imaging unit 22 and forms the outline of the face of a subject (for example, a person or a pet) or the shape of a baht (eyes, mouth, nose, forehead, etc.) The subject is detected by comprehensively judging the positional relationship and the like, and the subject wearing the optical tag 10 is specified.

  Further, the CPU 27 acquires the second identification information 24a from the color of the clothes of the subject, the distance between the face (the center of gravity) of the subject and the optical tag 10, and the like and stores the second identification information 24a in association with the first identification information 11a. 24. As a result, the optical tag 10 and a subject wearing the optical tag 10 can be associated with each other. Note that the subject recognition function including face detection is a technique that is generally used in an imaging apparatus, and since the well-known technique is used in the present embodiment, a specific description thereof is omitted. .

  In the photographing process, the CPU 27 searches the image captured by the imaging unit 22 for a color pattern that matches the first identification information 11a, and the position of the subject (the position of the subject to which the optical tag 10 is obtained as a result of the search is obtained. ) Is specified, and moving image shooting is performed while tracking the movement of the optical tag 10.

  Further, in the shooting process, when the optical tag 10 is lost due to hiding or the like, it is stored in association with the first identification information 11a of the optical tag 10 from the image captured by the imaging unit 22. The image information (for example, clothes color) matching the second identification information 24a is searched, and the position of the subject is specified from the position of the specific image information (for example, clothes color) obtained as a result of the search. Then, moving image shooting is performed while tracking the subject.

  Thus, even if the optical tag 10 is hidden or lost, the image matches the second identification information 24a stored in association with the first identification information 11a of the optical tag 10. By specifying the subject (position) from information (for example, the color of clothes), the subject can be tracked with high accuracy.

B. Next, operations of the optical tag 10 and the imaging apparatus 20 according to the above-described embodiment will be described.
FIG. 4 is a flowchart for explaining the operation of the optical tag 10 according to the present embodiment. First, the user attaches the optical tag 10 to the wrist or the like, and turns on the optical tag 10 before starting sports or the like. When the power is turned on, the CPU 13 of the optical tag 10 performs an initialization process (step S10), and in synchronization with the clock signal CK from the timing generator 12, the first identification information 11a corresponding to the color pattern is stored from the memory 11. Are sequentially read (step S12), and the extracted first identification information 11a is supplied to the light emitting unit 14 following the header information indicating data transmission.

  The light emitting unit 14 emits light having a color pattern P that changes with time based on the first identification information 11 a through the light emission window 18 in synchronization with the clock signal CK from the timing generator 12 ( Step S14). Next, the CPU 13 determines whether or not there has been a power-off operation (step S16). If there is no power-off operation (NO in step S16), the CPU 13 returns to step S14 and corresponds to the first identification information 11a. Repeated emission of color pattern. On the other hand, if there is a power-off operation (YES in step S16), the process ends.

  FIG. 5 is a flowchart for explaining the operation (registration process) of the imaging apparatus 20 according to the present embodiment. FIG. 6 is a conceptual diagram for explaining the operation (registration process) of the imaging apparatus 20 according to the present embodiment.

  After preparing the optical tag 10, the user hooks and fixes the handle portion 20 c on a wire mesh or the like, and turns on the power of the imaging device 20 from the key input portion 26 or the like. When the power is turned on, the CPU 27 of the imaging device 20 performs an initialization process (step S20), and instructs the imaging unit 22 to start a live view (step S22). In response to the instruction, the imaging unit 22 starts a live view in which the image captured via the optical lens unit 21 is displayed on the display unit 25 (the image is not stored).

  Next, the CPU 27 analyzes the live view image and performs pattern recognition such as the outline of the face of the subject and the shape and positional relationship of the baht (eyes, mouth, nose, forehead, etc.) forming the face. As shown in FIG. 6, subject recognition processing for recognizing subject A is executed (step S24). Next, the optical tag 10 within the recognized subject A frame is detected (step S26), and it is determined whether or not a color pattern emitted from the optical tag 10 has been detected (step S28). When the color pattern emitted from the optical tag 10 is not detected (NO in step S28), the process returns to step S26, and the detection of the optical tag 10, that is, the detection of the color pattern is repeated.

  On the other hand, when the color pattern emitted by the optical tag 10 is detected in the subject A frame in the live view image (YES in step S28), the first identification information 11a is acquired from the detected color pattern and the memory 24 is obtained. (Step S30). Next, the CPU 27 acquires the second identification information 24a from the live view image (step S34), and stores it in the memory 24 in association with the first identification information 11a (step S36). Thus, the first identification information 11a indicating the optical tag 10 and the second identification information 24a indicating the subject wearing the optical tag 10 are associated with each other.

  FIG. 7 is a flowchart for explaining the operation (imaging process) of the imaging apparatus 20 according to the present embodiment. FIGS. 8A and 8B are conceptual diagrams for explaining the operation (imaging process) of the imaging apparatus 20 according to the present embodiment. In the following description, an operation in the case where the optical tag 10 is hidden during moving image shooting or the like will be described. Therefore, in this case, as the second identification information 24a, the size of the subject (height, physique, etc.), the feature points of the face of the subject (positional relationship of eyes, nose and mouth, hair color, hairstyle, etc.), the subject It is preferable to use a representative color worn on the wearer (for example, the color of clothes).

  After completion of the registration process described above, the user (the photographer = may be the person wearing the optical tag 10) instructs the start of moving image shooting by pressing the shutter button from the key input unit 26 (step S40). The CPU 27 captures image data (frame data) from the imaging unit 22 through the optical lens unit 21 at a predetermined frame rate, and temporarily stores (buffers) it in the flash memory 23 (step S42).

  Next, the CPU 27 determines whether or not the first identification information 11a, that is, the color pattern emitted from the optical tag 10 is detected in the temporarily stored image data during moving image shooting (step S44). When the first identification information 11a (color pattern emitted by the optical tag 10) is detected (YES in step S44), the CPU 27 determines whether or not moving image shooting is in progress (step S50). When the moving image is being shot (YES in step S50), the CPU 27 shows the position of the optical tag 10 that emits visible light including the detected first identification information 11a as shown in FIG. As described above, from the temporarily stored image data, the subject A wearing the optical tag 10 is trimmed within a predetermined range B so as to fall within the angle of view and stored as a moving image (step S54). The imaging unit 22 adjusts the subject A so that focus and exposure are appropriate.

  Next, the CPU 27 determines whether or not a photographing stop instruction has been issued from the key input unit 26 or the like (step S56). If there is no shooting stop instruction (NO in step S56), the CPU 27 returns to step S42 and repeats the above-described processing.

  That is, while the visible light including the first identification information 11a is detected in the image data from the imaging unit 22, the CPU 27 is positioned at the position of the optical tag 10 that emits the visible light including the first identification information 11a. Based on the temporarily stored image data, an operation of shooting a moving image while following the subject A is performed by trimming the subject A wearing the optical tag 10 within a predetermined range B so that the subject A is within the angle of view. continue.

  On the other hand, when the optical tag 10 (first identification information 11a) is not detected in the image data from the imaging unit 22 (NO in step S44), the CPU 27 stores the second tag in the image data from the imaging unit 22. It is determined whether or not the identification information 24a has been detected (step S46).

  When the second identification information 24a is detected (YES in step S46), the CPU 27 determines whether or not moving image shooting is in progress (step S50). If the moving image is being shot (YES in step S50), the CPU 27 temporarily stores the image data based on the position where the second identification information 24a is detected, as shown in FIG. 8B. Then, the subject A specified by the second identification information 24a is trimmed within a predetermined range B so as to fall within the angle of view and stored as a moving image (step S54). The imaging unit 22 adjusts the subject A so that focus and exposure are appropriate.

  Next, the CPU 27 determines whether or not a photographing stop instruction has been issued from the key input unit 26 or the like (step S56). If there is no shooting stop instruction (NO in step S56), the process returns to step S42 and the above-described processing is repeated.

  That is, if the optical tag 10 that emits visible light including the first identification information 11a is not detected in the image data from the imaging unit 22, the CPU 27 detects the second detected in the image data from the imaging unit 22. Based on the position of the identification information 24a, the subject A is trimmed within a predetermined range B so that the subject A specified by the second identification information 24a falls within the angle of view from the temporarily stored image data. Continue to take video while following.

  In addition, when both the visible light including the first identification information 11a and the second identification information 24a are not detected during moving image shooting (NO in step S44, NO in S46), the CPU 27 causes the imaging unit 22 to perform detection. Is instructed to pause moving image shooting (step S48). Thereby, the imaging unit 22 temporarily stops moving image shooting. In addition, when both the visible light including the first identification information 11a and the second identification information 24a are not detected, the moving image shooting is not paused immediately, but for a predetermined time (for example, 20 seconds). , About 30 seconds), and even if the predetermined time elapses, when the visible light including the first identification information 11a or the second identification information 24a is not detected again, the video shooting is paused. You may do it.

  Next, the CPU 27 determines whether or not a shooting stop instruction has been issued from the key input unit 26 or the like (step S56). If there is no shooting stop instruction (NO in step S56), the CPU 27 returns to step S42 and returns to the first step. The detection of visible light including the identification information 11a or the second identification information 24a is repeated. Therefore, if for some reason both the visible light including the first identification information 11a and the second identification information 24a cannot be detected, the moving image shooting is temporarily stopped. However, while the moving image shooting is temporarily stopped, the image capturing by the imaging unit 22 continues.

  On the other hand, when either the visible light including the first identification information 11a or the second identification information 24a is detected again during the suspension of moving image shooting (YES in step S44 or YES in step S46). ) It is determined whether or not moving image shooting is in progress (step S50). In this case, since moving image shooting is paused (NO in step S50), the CPU 27 instructs the imaging unit 22 to resume moving image shooting (step S52). As a result, the imaging unit 22 uses the visible light including the first identification information 11a or the visible light including the first identification information 11a from the temporarily stored image data based on the second identification information 24a. A moving image is captured while following the subject A by trimming within a predetermined range B so that the subject A specified by the position of the optical tag 10 that emits or the position of the second identification information 24a falls within the angle of view. Resume the operation.

  Next, the CPU 27 determines whether or not a shooting stop instruction has been issued from the key input unit 26 or the like (step S56). If there is no shooting stop instruction (NO in step S56), the CPU 27 returns to step S42 and returns to the first step. The moving image shooting is continued while tracking the subject A based on the visible light including the identification information 11a or the second identification information 24a.

  If there is a shooting stop instruction from the key input unit 26 or the like (YES in step S56), the CPU 27 instructs the imaging unit 22 to stop moving image shooting (step S58). Thereby, the imaging unit 22 stops moving image shooting. Thereafter, the CPU 27 ends the process.

  According to the above-described embodiment, when the optical tag 10 that emits visible light including the first identification information 11a is detected, a video is shot while following the subject A based on the position of the optical tag 10, If an optical tag 10 that emits visible light including the first identification information 11a is not detected during shooting, the image tag is registered in association with the first identification information 11a for image recognition different from visible light communication. Based on the position of the second identification information, which is information, the moving image is shot while following the subject A, so that even when the optical tag 10 cannot be recognized, the subject can be tracked with high accuracy. .

  In the above-described embodiment, the operation when the optical tag 10 that emits visible light including the first identification information 11a is not detected has been described. However, the optical tag 10 that emits visible light including the first identification information 11a is described. The subject may be tracked based on both the position and the position of the image information that matches the second identification information 24a stored in association with the first identification information 11a.

  In this case, the second identification information 24a includes the size of the subject (height, physique, etc.), feature points of the face of the subject (positional relationship of eyes, nose and mouth, hair color, hairstyle, etc.), the size of the subject and the subject's size. The position of the light emitting tag 10 inside, the representative color worn by the subject (for example, the color of clothes), the distance from the subject's face to the light emitting tag 10, and the number of light emitting tags attached to the subject Etc. are preferable.

  In this case, in addition to the position of the optical tag 10 that emits visible light including the first identification information 11a, the position of the subject is determined by information for image recognition different from the visible light communication indicated by the second identification information 24a. Therefore, it is possible to prevent erroneous recognition for some reason, and to track the subject with high accuracy.

  Although not described in the flowchart of FIG. 7, the second identification information 24a cannot be detected, and the subject is tracked based only on the position of the optical tag 10 that emits visible light including the first identification information 11a. Of course it can be done.

In the above-described embodiment, the imaging device 20 trims the identified subject A within the predetermined range B, but may capture a moving image while following the subject A without trimming.
Moreover, you may image | photograph a still image at the specific timing instead of imaging | photography of a moving image.

  In the above-described embodiment, the first identification information 11a for identifying the optical tag 10 and the optical tag 10 are mounted in order to track the subject to which the optical tag 10 is mounted by the user's operation. The second identification information 24a acquired from the image information of the subject is linked and stored in the memory 24. The tracking by the second identification information 24a is limited to simple person tracking, for example. The information 24a may be information for detecting a person, and the first identification information 11a and the second identification information 24a may be stored in the memory 24 in advance when the optical tag 10 and the imaging device 20 are shipped from the factory.

As mentioned above, although several embodiment of this invention was described, this invention is not limited to these, The invention described in the claim, and its equal range are included.
Below, the invention described in the claims of the present application is appended.

(Appendix 1)
The invention according to appendix 1 is an imaging device that receives visible light including arbitrary information emitted by a light emitting unit with an imaging unit and acquires information included in the visible light, and prior to visible light communication, Recording means for recording second identification information different from the first identification information associated with the first identification information and the first identification information, wherein the first identification information is the visible information It is information indicating the light emitting unit itself contained in light, and the second identification information is information for image recognition different from the visible light communication.

(Appendix 2)
According to the second aspect of the present invention, the light emitting unit is mounted on the basis of first detection means for detecting a position of visible light including information related to the first identification information, and the second identification information. The imaging apparatus according to appendix 1, further comprising: a second detection unit that detects the position of the subject.

(Appendix 3)
The invention according to attachment 3 further includes an acquisition unit that receives visible light emitted from the light emitting unit that emits visible light by the imaging unit, and acquires information related to the first identification information included in the visible light. The first detection means detects a position of visible light including information related to the first identification information based on information related to the first identification information acquired by the acquisition means. The imaging apparatus according to Supplementary Note 2, wherein the imaging apparatus is characterized in that

(Appendix 4)
The invention according to appendix 4 further includes tracking means for tracking the subject attached with the light emitting unit based on the detection result of the first detection means and the detection result of the second detection means. It is an imaging device given in appendix 3.

(Appendix 5)
The invention according to appendix 5 is directed to the detection result of the second detection means, when the tracking means cannot detect the position of visible light including the same information as the first identification information. The imaging apparatus according to appendix 4, wherein the subject on which the light emitting unit is mounted is tracked based on the tracking.

(Appendix 6)
The invention according to appendix 6, wherein the second identification information is a size of a subject wearing the light emitting unit and a position of the light emitting unit in the subject. The imaging apparatus according to any one of the above.

(Appendix 7)
The invention according to appendix 7, in which the second identification information is a distance from the face of the subject wearing the light emitting unit to the light emitting unit. It is an imaging device as described in above.

(Appendix 8)
The invention according to appendix 8, wherein the second identification information is the number of the light emitting units attached to the subject wearing the light emitting unit. It is an imaging device described in one.

(Appendix 9)
The invention according to appendix 9 is the imaging apparatus according to any one of appendices 1 to 5, wherein the second identification information is a size of a subject wearing the light emitting unit. .

(Appendix 10)
The imaging device according to any one of appendices 1 to 5, wherein the second identification information is a feature of a face of a subject wearing the light emitting unit. It is.

(Appendix 11)
The invention according to appendix 11, wherein the second identification information is a representative color worn by a subject wearing the light emitting unit. It is an imaging device described in one.

(Appendix 12)
The invention according to attachment 12 further includes registration means for registering the first identification information and the second identification information associated with the first identification information in the recording means. The imaging device as described in any one of thru | or 11.

(Appendix 13)
The invention described in appendix 13 includes first identification information indicating the light emitting unit itself included in visible light emitted from the light emitting unit prior to visible light communication, and image recognition different from the visible light communication. It is a visible light communication identification information registration method characterized by registering the second identification information as information in association with each other.

(Appendix 14)
In the invention according to appendix 14, the first identification information and the second identification information different from the first identification information associated with the first identification information are recorded prior to visible light communication. A first detection means for detecting a position of visible light including information relating to the first identification information; and a computer of an imaging apparatus that includes recording means and acquires information included in visible light emitted by the light emitting unit; On the basis of the second identification information, the program functions as second detection means for detecting the position of the subject on which the light emitting unit is mounted, wherein the first identification information is It is information indicating the light emitting unit itself contained in visible light, and the second identification information is information for image recognition different from the visible light communication.

1 photographing system 10 optical tag 11 memory 11a first identification information 12 timing generator 13 CPU
DESCRIPTION OF SYMBOLS 14 Light emission part 15 Light emission window 20 Imaging device 21 Optical lens part 22 Imaging part 23 Flash memory 24 Memory 24a 2nd identification information 25 Display part 26 Key input part 27 CPU
A Subject B Predetermined range P Color pattern

Claims (14)

An imaging device that receives visible light including arbitrary information emitted by a light emitting unit with an imaging unit, and acquires information included in the visible light,
Prior to visible light communication, comprising: a recording means in which first identification information and second identification information different from the first identification information associated with the first identification information are recorded;
The first identification information is information indicating the light emitting unit itself included in the visible light,
The second identification information is information for image recognition different from the visible light communication.
An imaging apparatus characterized by that. First detection means for detecting a position of visible light including information related to the first identification information;
Based on the second identification information, second detection means for detecting the position of the subject on which the light emitting unit is mounted;
The imaging apparatus according to claim 1, further comprising: Receiving means for receiving visible light emitted by a light emitting unit that emits visible light with an imaging means, and obtaining information related to the first identification information included in the visible light;
The first detection means detects a position of visible light including information related to the first identification information based on information related to the first identification information acquired by the acquisition means. The imaging apparatus according to claim 2, characterized in that: Tracking means for tracking the subject on which the light emitting unit is mounted based on the detection result of the first detection means and the detection result of the second detection means;
The imaging apparatus according to claim 3, further comprising:   When the first detection unit cannot detect the position of visible light including the same information as the first identification information, the tracking unit is mounted with the light emitting unit based on the detection result of the second detection unit. The imaging apparatus according to claim 4, wherein the subject is tracked.   The said 2nd identification information is the size of the to-be-photographed object to which the said light emission unit is mounted | worn, and the position of the said light emission unit in the said object, The Claim 1 thru | or 4 characterized by the above-mentioned. Imaging device.   5. The image pickup apparatus according to claim 1, wherein the second identification information is a distance from a face of a subject wearing the light emitting unit to the light emitting unit.   5. The imaging apparatus according to claim 1, wherein the second identification information is a number of the light emitting units attached to a subject wearing the light emitting unit.   The imaging apparatus according to any one of claims 1 to 5, wherein the second identification information is a size of a subject wearing the light emitting unit.   The imaging apparatus according to claim 1, wherein the second identification information is a feature of a face of a subject wearing the light emitting unit.   The imaging apparatus according to claim 1, wherein the second identification information is a representative color worn by a subject wearing the light emitting unit. Registration means for registering the first identification information and second identification information associated with the first identification information in the recording means;
The imaging apparatus according to claim 1, further comprising: Prior to visible light communication, first identification information indicating the light emitting unit itself included in visible light emitted by the light emitting unit;
Second identification information which is information for image recognition different from the visible light communication;
A method for registering visible light communication identification information, wherein the information is registered in association with each other. Prior to visible light communication, the light-emitting unit includes recording means for recording first identification information and second identification information different from the first identification information associated with the first identification information. A computer of an imaging device that acquires information contained in visible light that emits light,
First detection means for detecting a position of visible light including information related to the first identification information;
Second detection means for detecting a position of a subject on which the light emitting unit is mounted based on the second identification information;
A program characterized by functioning as:
The first identification information is information indicating the light emitting unit itself included in the visible light, and the second identification information is information for image recognition different from the visible light communication.

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