Tele-immersion is a technology that will be implemented with internet. it will enable users in different geographic locations to come together and interact in a simulated holographic environment. Users will feel as if they are actually looking, talking and meeting with each other face to face in the same place, even though they may be miles apart physically.

1. Tele-Immersion
PRESENTED BY
Name: Shubham M. Athawane
Enroll No: 167201 (IT)
SEMINAR ON
GOVERNMENT POLYTECHNIC, AURANGABAD
(An Autonomous Institute of Government of Maharashtra)
“RESULT FOR EXCELLENCE”
GUIDED BY
P.P
. Deshpande

2. Flow of Presentation
 Introduction
 History
 Holographic environment
 Tele cubical
 How it works ?
 Tele immersion vs virtual reality
 Applications
 Problems

3. Introduction
 Tele-immersion is a technology that will be implemented with internet2
it will enable users in different geographic locations to come together
and interact in a simulated holographic environment.
 Users will feel as if they are actually looking, talking and meeting with
each other face to face in the same place, even though they may be
miles apart physically.
 In a tele-immersive environment, computer recognized the presence
and movements of individuals as well as physical and virtual objects.

4. Tele-Immersion

5. What actually Tele-Immersion is ?
 It enables uses in different geographic locations to come together and
interact in simulated holographic environment.
 Tele-immersion reconstructs the objects in the real world in real-time
and mixes the real objects with the virtual environment.

6. Video Conferencing Using Tele Immersion Technology

7. History
 It was way back in 1965 that the great pioneer of computer graphics, Ivan
Sutherland, proposed the concept of the „ultimate display‟. It described a
graphics display that would allow the user to experience a completely
computer rendered environment.
 In 1998, Abilene, a backbone research project, was launched and now serves
as a base for Internet2 research. Internet2 needed an application that would
challenge and stretch its networks‟ capabilities.
 Researchers at the Universities of North Carolina (UNC), the Universities of
Pennsylvania and advanced network and services reached a milestone in
developing this technology.

8. How Tele-immersion Works:
 From the sender:
 Parallel processors accept visual inputs from the cameras and
reinterpret the scene as a 3- Dimensional computer model.
 To the receiver:
 Specific rendering of remote people and places are synthesized from
the model as it is received to match the point of view of each eye of
a user. The whole process repeats many times a second to keep up
with the user head motion.
Following the flow of information tele-immersion depends on intense
data processing at each end of a connection, mediated by high
performance network.

9. Architecture of tele-immersion

10. Generating the 3-D Image:
 An array of cameras views people and their surroundings from different angle .
Each camera generates an image from its point of view many times in a second
 It uses cluster of cameras each of this having 4 cameras ( 3-b/w & one-colour ).
 They had it's own dedicated high-end computer to perform the image
rectification, pixel correlation, and triangulation needed to recover depth
values from the sets of images produced.

11. The Camera Clusters
Left: A custom built trinocular stereo cluster made of 3 Point Grey gray scale cameras and 1 color
camera. Middle: A TYZX DeepSea G2 stereo network camera with on board CPU. Right: A G2
camera with side mounted FLIR Photon thermal infrared camera

12. The camera clusters
 Each set of the images taken at a given instant is sorted into
subsets of overlapping trios of images
 From each trio of images, a “disparity map” is calculated,
reflecting the degree of variation among the images at all points
in the Disparity map visual field. The disparities are then
analyzed to yield depths that would account for the differences
between what each camera sees.

13. Holographic-Environment
 Three steps to constructing a holographic environment.
 The computer recognizes the presence and movements of people and
objects.
 The computer tracks those images.
 The computer projects those images on a stereo-immersive surface.

14. Holographic-Environment
 3D reconstruction for tele-immersion is performed using stereo, which
mean two or more cameras rapid sequential shots of the same objects,
continuously performing distance calculations, and projecting them into
the computer.
 Simulated environment to replicate real time movements. By
combining cameras and Internet telephony, video conferencing has
allowed real time exchange of more information than ever, without
physically bringing each person into one central room.

15. Tele-Cubical
 Desk surface(2 stereo-immersive desk)
 Two wall surfaces(plasma displays)
 Two oblique front stereo projection sources.

16. Tele-cubical immersion Setup fig. 1

17. Tele-cubical immersion Setup fig. 2

18. Tele-immersion v/s Virtual Reality?
 Tele immersion may sound like virtual reality but there are major
differences between the two technologies!.
 Virtual reality allows you to move in a computer generated 3-D
environment.
 Tele immersion can only create a 3d environment that you can see
but not interact with.

19. Bandwidth issues
 One of the main concerns of this new technology is its bandwidth.
 With time, the number of megabits used will fall as advanced
compression techniques are established,
 Although OC3 lines are 100 times faster than normal broadband, they
are also more expensive,

20. Solution for Bandwidth issues..?
 Grid Networking.
 Distributed computing.
 New network will connect their PCs so they can share processing
power and hard disk space.

21. Future Scope
 Tele-immersion techniques can be viewed as the building blocks of the
office of tomorrow.
 In future, it will ne possible to manipulate.
 Tele-immersion is a dynamic concept, which will transform the way
humans, interact with each other and the world in general.

22. Applications
 In Education
 Future offices
 Live Games experience without Joysticks.
 Surgeons could experiment with virtual medical procedures before
working on actual patients.
 Used in education field.

23. Advantages
 Tele-immersion overcome the drawback of video-conferencing.
 It uses Haptic sensors by which we can touch & feel the projection.
 By this technology, it is very easy to see 3-D image of any project or model.

24. Disadvantages ☹
 Very Expensive
 High bandwidth requirement
 High speed internet is required(min of 60 MBPS)

25. Conclusion
 When Tele-immersion becomes common place, it will probably enable
a wide variety of important applications.
 In fact, Tele-immersion might come to be seen as real competition for
air travel-unlike videoconferencing.
 Undoubtedly Tele-immersion will pose new challenges as well.

26. Thank You | Any questions?