Multi-camera system, camera, processing method of camera, confirmation apparatus, and processing method of confirmation apparatus

1. A multi-camera system, comprising:

a first camera apparatus;

a second camera apparatus; and

an information processing apparatus, including

a communication interface; and

processing circuitry configured to:

receive a predetermined user input; and

in response to the predetermined user input,

send, via the communication interface, a first control signal to the first camera apparatus that captures a first video, and

send, via the communication interface, a second control signal to the second camera apparatus that captures a second video, wherein

the first control signal causes the first camera apparatus to assign first unique identifiers to frames of the first video captured by the first camera apparatus and recorded in a frame buffer of the first camera apparatus,

the second control signal causes the second camera apparatus to assign second unique identifiers to frames of the second video captured by the second camera apparatus and recorded in a frame buffer of the second camera apparatus,

each of the first unique identifiers assigned to the frames of the first video is associated with a different one of the second unique identifiers assigned to the frames of the second video,

the first unique identifiers and the second unique identifiers include frame numbers,

a first numbered frame in the frame buffer of the first camera apparatus corresponds to a timing of reception of the first control signal, and

a first numbered frame in the frame buffer of the second camera apparatus corresponds to a timing of reception of the second control signal.

2. An information processing apparatus, comprising:

a communication interface; and

processing circuitry configured to:

receive a predetermined user input; and

in response to the predetermined user input,

send, via the communication interface, a first control signal to a first camera apparatus that captures a first video, and

send, via the communication interface, a second control signal to a second camera apparatus that captures a second video, wherein

the first control signal causes the first camera apparatus to assign first unique identifiers to frames of the first video captured by the first camera apparatus and recorded in a frame buffer of the first camera apparatus,

the second control signal causes the second camera apparatus to assign second unique identifiers to frames of the second video captured by the second camera apparatus and recorded in a frame buffer of the second camera apparatus,

each of the first unique identifiers assigned to the frames of the first video is associated with a different one of the second unique identifiers assigned to the frames of the second video,

the first unique identifiers and the second unique identifiers include frame numbers,

a first numbered frame in the frame buffer of the first camera apparatus corresponds to a timing of reception of the first control signal, and

a first numbered frame in the frame buffer of the second camera apparatus corresponds to a timing of reception of the second control signal.

3. The information processing apparatus according to claim 2 , wherein

a field of view of the first camera apparatus is different from a field of view of the second camera apparatus.

4. The information processing apparatus according to claim 2 , wherein the assigned first and second unique identifiers indicate one-to-one correspondences between the frames of the first video and the frames of the second video.

5. The information processing apparatus according to claim 2 , wherein the first and second unique identifiers are the same unique identifiers.

6. The information processing apparatus according to claim 2 , wherein

the first control signal causes the first camera apparatus to assign the first unique identifiers to a first number of frames of a total number of frames of the first video, the first number of frames being less than the total number of frames of the first video,

the second control signal causes the second camera apparatus to assign the second unique identifiers to a second number of frames of the second video, and

the first number of frames is equal to the second number of frames.

7. The information processing apparatus according to claim 2 , wherein

the first control signal causes the first camera apparatus to assign the first unique identifiers in a reverse order of capture, and

the second control signal causes the second camera apparatus to assign the second unique identifiers in a reverse order of capture.

8. An information processing apparatus, comprising:

a communication interface; and

processing circuitry configured to:

transmit, via the communication interface, a first unique identifier of a frame of a first video to a first camera apparatus, which captured the first video;

receive one or more frames of the first video including the frame corresponding to the first unique identifier from the first camera apparatus in response to the transmitted first unique identifier, each of the one or more received frames of the first video corresponding to a different one of a plurality of first unique identifiers;

output the one or more received frames of the first video for display to a user;

receive a predetermined user input during the output of the one or more received frames of the first video for display to the user; and

in response to the received predetermined user input,

transmit, via the communication interface, a second unique identifier of a frame of a second video to a second camera apparatus, which captured the second video and recorded the frame in a frame buffer of the second camera apparatus, the second unique identifier being associated with the first unique identifier of the frame of the first video,

receive, from the frame buffer of the second camera apparatus, one or more frames of the second video including the frame corresponding to the second unique identifier from the second camera apparatus in response to the transmitted second unique identifier, each of the one or more received frames of the second video corresponding to a different one of a plurality of second unique identifiers, and

output the one or more received frames of the second video for display to the user,

wherein the first unique identifiers and the second unique identifiers include frame numbers, and

wherein the frame corresponding to the second unique identifier from the second camera apparatus is a first numbered frame in the frame buffer of the second camera apparatus corresponding to a timing of reception of the predetermined user input.

9. The information processing apparatus according to claim 8 , wherein

a field of view of the first camera apparatus is different from a field of view of the second camera apparatus.

10. The information processing apparatus according to claim 8 , wherein

wherein the first and second unique identifiers are the same unique identifiers.

11. A non-transitory computer-readable medium storing instructions which when executed by a computer cause the computer to perform a method of controlling cameras to assign unique identifiers to frames of captured video, the method comprising:

receiving a predetermined user input; and

in response to the predetermined user input,

send, via a communication interface, a first control signal to a first camera apparatus that captures a first video, and

send, via the communication interface, a second control signal to a second camera apparatus that captures a second video, wherein

the first control signal causes the first camera apparatus to assign first unique identifiers to frames of the first video captured by the first camera apparatus and recorded in a frame buffer of the first camera apparatus,

the second control signal causes the second camera apparatus to assign second unique identifiers to frames of the second video captured by the second camera apparatus and recorded in a frame buffer of the second camera apparatus, and

each of the first unique identifiers assigned to the frames of the first video is associated with a different one of the second unique identifiers assigned to the frames of the second video,

the first unique identifiers and the second unique identifiers include frame numbers,

a first numbered frame in the frame buffer of the first camera apparatus corresponds to a timing of reception of the first control signal, and

a first numbered frame in the frame buffer of the second camera apparatus corresponds to a timing of reception of the second control signal.

12. The non-transitory computer-readable medium according to claim 11 , wherein a field of view of the first camera apparatus is different from a field of view of the second camera apparatus.

13. The non-transitory computer-readable medium according to claim 11 , wherein the assigned first and second unique identifiers indicate one-to-one correspondences between the frames of the first video and the frames of the second video.

14. The non-transitory computer-readable medium according to claim 11 , wherein the first and second unique identifiers are the same unique identifiers.

15. The non-transitory computer-readable medium according to claim 11 , wherein

the first control signal causes the first camera apparatus to assign the first unique identifiers to a first number of frames of a total number of frames of the first video, the first number of frames being less than the total number of frames of the first video,

the second control signal causes the second camera apparatus to assign the second unique identifiers to a second number of frames of the second video, and

the first number of frames is equal to the second number of frames.

16. The non-transitory computer-readable medium according to claim 11 , wherein

the first control signal causes the first camera apparatus to assign the first unique identifiers in a reverse order of capture, and

the second control signal causes the second camera apparatus to assign the second unique identifiers in a reverse order of capture.

17. A non-transitory computer-readable medium storing instructions which when executed by a computer cause the computer to perform a method of playing back video recorded by a plurality of cameras, the method comprising:

transmitting, via a communication interface, a first unique identifier of a frame of a first video to a first camera apparatus, which captured the first video;

receiving one or more frames of the first video including the frame corresponding to the first unique identifier from the first camera apparatus in response to the transmitted first unique identifier, each of the one or more received frames of the first video corresponding to a different one of a plurality of first unique identifiers;

outputting the one or more received frames of the first video for display to a user;

receiving a predetermined user input during the output of the one or more received frames of the first video for display to the user; and

in response to the received predetermined user input,

transmitting, via the communication interface, a second unique identifier of a frame of a second video to a second camera apparatus, which captured the second video and recorded the frame in a frame buffer of the second camera apparatus, the second unique identifier being associated with the first unique identifier of the frame of the first video,

receiving, from the frame buffer of the second camera apparatus, one or more frames of the second video including the frame corresponding to the second unique identifier from the second camera apparatus in response to the transmitted second unique identifier, each of the one or more received frames of the second video corresponding to a different one of a plurality of second unique identifiers, and

outputting the one or more received frames of the second video for display to the user,

wherein the first unique identifiers and the second unique identifiers include frame numbers, and

wherein the frame corresponding to the second unique identifier from the second camera apparatus is a first numbered frame in the frame buffer of the second camera apparatus corresponding to a timing of reception of the predetermined user input.

18. The non-transitory computer-readable medium according to claim 17 , wherein a field of view of the first camera apparatus is different from a field of view of the second camera apparatus.

19. The non-transitory computer-readable medium according to claim 17 , wherein the first and second unique identifiers are the same unique identifiers.

20. The multi-camera system of claim 1 , wherein

the first unique identifiers and the second unique identifiers are assigned in a reverse order of capture.