AGENDA  Introduction  Early developments  Requirements for immersive tele conferences systems  How tele immersion works  Share table environment  Tele cubicles  Examples of tele immersion  Collaboration with I2 and IPPM  Conclusion and future applications

INTRODUCTION  Aimed 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 DEFINATION [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 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 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 HOW TELE CUBICLES WORKS Fig 2. Tele Cubicles [8]

HOW TELE CUBICLES WORKS 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 Internet 2 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]

REFERENCES 1. "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 2003 Oliver Grau 4. Telecommunication,teleimmersion and telexistence by Susumu Tachi 5. "Being there" (Reeves 1991; Heeter 1992; Barfield et al., 1995; Zhoa 2003 ) 6. "The suspension of disbelief" (Slater & Ushoh 1994) [13]

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