AGENDA

IntroductionEarly developmentsRequirements for immersive tele conferences

systemsHow tele immersion worksShare table environmentTele cubiclesExamples of tele immersionCollaboration with I2 and IPPMConclusion and future applications

INTRODUCTIONAimed to enable users in geographically distributed sites to

collaborate in real time in a shared simulated environment as if they were in the same physical room

Users actually feel like they are actually looking , talking and meeting with each other face-to-face in the same room

Tele Immersion can simply be termed as a next step to video conferencing

It differs from video-conferencing in that user’s view of the remote environment changes dynamically as he moves his head.

[1]

DEFINATION

“The term Tele-immersion was first used… as the title of the workshop… to bring togather

researchers in distributed computing , collaboration, virtual reality and networking” - Jason Leigh

[2]

EARLY DEVELOPMENTS

After three years long work the team came up with it’s first demonstration in May 2000

The experiment was conducted in Chapel Hill led by UNC computer scientists Henry Fuchs and Greg Welch.

[3]

HOW TELE-IMMERSION WORKS

Fig 1. Tele-Immersion Implementation

[4]

HOW TELE-IMMERSION WORKS

There is a sea of cameras which provide view of users and their surroundings

Mounted Virtual Mirrors provide each user a view how his surrounding seems to others

Imperceptible structured light looks like white light but projects flickering of patterns

Screen uses two overlapping projections of polarized images and requires users to wear polarized glasses so that each image is seen only by one eye

[5]

SHARED TABLE ENVIRONMENT

It is based on the idea to position the participants consistently in a virtual environment around the shared table

At the transmitting side the conferee infront of the display is captured by multiple cameras and a 3-D image of the conferee is derived from this multi view set-up. The 3-D image of the participating conferees are then place virtually around the shared table

At the receiving end this composed scene is rendered onto the 2-D display of the terminal by using a virtual camera. The position of the camera coincides with the current position of the conferee’s head.

[6]

TELE CUBICLE

“Tele cubicle is an office that can appear to become one quadrant in a larger shared virtual office space.”

The main idea behind this work came directly from Tele-Immersion meeting on July 21,1997 at the Advance Network Office.

[7]

HOW TELE CUBICLES WORKS

Fig 2. Tele Cubicles

[8]

HOW TELE CUBICLES WORKS

Fig 3. Working of Tele Cubicles[9]

COLLABORATION WITH I2 & IPPM

To cop up with the problem like communicating speed and better transmission over the network, Tele-Immersion team collaborate with Internet2 and Internet Protocol Performance Metrics.

Main problem as obvious was that today’s internet is not fast enough to transmit data, specially when you need to transmit a huge bulk of data across the internet

The experiment conducted at Chapel Hill used 60 megabits per second and good quality tele-immersion requires 1.2 gigabits per second.

[10]

APPLICATIONS

Preoprative planning Tele diagnostics Tele-assisted surgery Advanced surgerical trainingOTHERS Tele-meetings Tele-collaborative design Remote learning & training 3-D interactive video Entertainment

[11]

CONCLUSION

All this relies on the advancement in emerging technologies, most heavily on the ability of Internet to ship data across different networks without delay

In the years to some it will be one of the major developments, you could visit each other environment

So it can be summarized as:• Collaboration at geographically distributed sites in

real-time• Synthesis of networking and media technologies• Full integration of Virtual Reality into the workflow

[12]

REFERENCES1. "Tele-Immersion" (Minsky 1980; Sheridan 1992a; Barfield,

Zelter, Sheridan, & Slater 1995; Welch, Blackmon, Liu, Mellers, & Stark 1996)

2. "Virtual presence" (Barfield et al., 1995)3. Oliver Grau: Virtual Art: From Illusion to Immersion, MIT-

Press, Cambridge 20034. Telecommunication,teleimmersion and telexistence by

Susumu Tachi5. "Being there" (Reeves 1991; Heeter 1992; Barfield et al.,

1995; Zhoa 2003)6. "The suspension of disbelief" (Slater & Ushoh 1994)

[13]

THANK YOU

[14]