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Case Study of Live View System using Union-Camera Hiroto HARADA* Koji OKAMURA** *Graduate School of Information Science and Electrical Engineering (ISEE), Kyushu University **Computing and Communications Center, Kyushu University August 28, 2003 Contents Overview of the demonstration

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case study of live view system using union camera

Case Study of Live View System using Union-Camera

Hiroto HARADA* Koji OKAMURA**

*Graduate School of Information Science and Electrical Engineering (ISEE), Kyushu University

**Computing and Communications Center, Kyushu University

August 28, 2003

contents
Contents
  • Overview of the demonstration
  • Union-Camera
  • vvideo
  • How to realize the Live View System
  • Consideration
  • Conclusion
1 overview of the demonstaration
1.Overview of the demonstaration
  • We had a demonstration with Korea Advanced Institute of Science and Technology
  • We used momomap which integrates fixed-point observation cameras and locational information
  • User just clicks the point on the map to watch the video of the place.
slide5

Sea Hawk

Fukuoka Tower

slide6

locational Information

of Sea Hawk

Fukuoka Tower

Seoul

slide8

locational Information

of Sea Hawk

Video of Sea Hawk

Fukuoka Tower

Seoul

slide9

Fukuoka Tower

Kyushu University

Seoul

Union-Camera

vvideo

2 union camera
2.Union-Camera
  • Union-Camera combines the multiple cameras virtually and provides the same operationality as a single camera.
slide11

150

0

User requests 150 degrees

slide12

camera2

150

0

camera1

camera3

150 degrees corresponds to 30 degrees of camera2

0

30

slide13

camera2

0

Normal Case (without Union-Camera)

150 degrees corresponds to 30 degrees of camera2

150 degrees

30 degrees

User

Application

Application must deal with the correspondence between the degree and camera

slide14

The case using Union-Camera

Application

150 degrees

User

operation as a single camera

150 degrees

camera2

30 degrees

Union-Camera

0

150 degrees corresponds to 30 degrees of camera2

slide15

We used VC-C3 made by Canon, and set three VC-C3s

at Fukuoka Tower in the shape of triangle.

Tilt +25

Pan -90

Pan +90

Tilt -30

2 union camera16
2.Union-Camera
  • Camera-Server
    • has 3 physical video capture device, and each of them is connected to the camera.
    • captures from the device which is connected to the selected camera.
  • Cameras keep taking video. According to the request, proper camera is selected and changes the direction. Then only the video of the selected camera is sent to User.
3 vvideo
3.vvideo
  • Vvideo can offer transparent video capture devices on some network environment
  • Using vvideo, all of remote video capture devices can be used in the same way as local video capture devices.
slide18

Transparent video capture device over Internet

Internet

application

Control

physical video

capture device

virtual video

capture device

/dev/video0

Data Transport

Device Driver

Control

Server Daemon

Client Daemon

Data Transport

slide20

Fukuoka Tower

Kyushu University

Seoul

②momomap changes

locational information

into pan and tilt of

Union-Camera

Camera-Server

Web-Server

①click the point

on the web

vvsd

vvcd

End-User

windows

media encoder

slide22

Click here!

-180 degrees of Union-Camera

slide23

Fukuoka Tower

Kyushu University

Seoul

②momomap changes

locational information

into pan and tilt of

Union-Camera

⑤Union-Camera changes

pan and tilt of Union-Camera

into ones of individual camera

Camera-Server

Web-Server

③pan and tilt

of Union-Camera

①click the point

on the web

④pan and tilt

of Union-Camera

(vvideo)

vvsd

vvcd

End-User

windows

media encoder

slide24

-180 degrees of Union-Camera

-30 degrees of camera2

camera3

corresponds to

individual camera

camera1

camera2

slide25

Fukuoka Tower

Kyushu University

Seoul

②momomap changes

locational information

into pan and tilt of

Union-Camera

⑤Union-Camera changes

pan and tilt of Union-Camera

into ones of individual camera

Camera-Server

Web-Server

③pan and tilt

of Union-Camera

①click the point

on the web

④pan and tilt

of Union-Camera

(vvideo)

vvsd

windows

media player

vvcd

⑥video transport

(vvideo)

output and capture

End-User

windows

media encoder

⑧video transport

⑦change the format

(Motion-JPEG

→windows media)

5 consideration
5.Consideration
  • The format is different between a camera and End-User (Motion-JPEG and Windows media)
    • We need a Windows media encoder
    • If there’s a system that handles the difference automatically, it makes the communication more smoothly and easier for users.
6 conclusion
6.Conclusion
  • Demonstration for Live View System
    • User just clicks on the map to watch the video of the place
  • Live View System makes use of
    • Union-Camera
    • Vvideo
  • How to realize Live View System