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Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
Tele immersion
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Tele immersion

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Tele immersion is a emerging technology. Download complete pptx.

Tele immersion is a emerging technology. Download complete pptx.

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Transcript

  • 1. Tele-immersion
    Presented by:
    Himanshu Sharma
    1207185
  • 2. Contents
    Introduction
    History
    Tele-conferencing vs. Tele-immersion
    Working
    Applications
    Challenges
  • 3. Introduction
    Tele-immersion is an emerging technology that will enable users at geographically distributed sites to collaborate in real time in a shared, simulated environment as if they are in the same physical room.
    This is achieved through realistic reconstruction of the scenes in virtual space.
  • 4.
  • 5. History
    The idea of Tele-immersion was proposed by Jaron Lanier , the head of Advanced Networks and Services in 1997. National Tele-Immersion Initiative (NTII) was formed to implement this.
    In May 2000, researchers at University of North Carolina (UNC), the University of Pennsylvania and Advanced Networks and Services developed this technology.
    A user sitting in office at UNC was able to see lifelike 3D images of his colleagues hundreds of mile away.
  • 6. Artistic expression as proposed by Jaron in 1997
  • 7. Tele-conference vs. Tele-immersion
    Tele-immersion differs significantly from conventional video Tele-conferencing in that the user’s view of the remote environment changes dynamically as he moves his head.
    Tele-conferencing
    Tele-immersion
  • 8. WORKING
  • 9. Immersive Virtual Environment
    Audio Synthesizer
    User
    Environment
    head-
    mounted
    display
    or
    projection
    display
    system
    Virtual
    Environment
    Generator
    Audio Localizer
    commands
    Speech
    Recognizer
    Display
    Electronics
    graphics
    eye position
    Head/Eye/Hand
    Tracking
    Electronics
    head position
    hand position
    Haptic/Tactile
    kinaesthetics
    system
  • 10. 2D to 3D…
  • 11. Image Acquisition
    • Bank of digital cameras capture participants from a variety of angels.
    • 12. There are about 7-15 cameras clusters each contain 4 cameras out of which 3 are black and white and one is color.
    • 13. B&W cameras are for stereo construction .
    • 14. The color camera is for extracting the appearance.
    A camera cluster of 3 BW and 1 color cameras
  • 15. Camera clusters
  • 16. Each camera is synchronized to other camera.
    Each camera is connected to workstation.
  • 17. 3D Construction
    computation
  • 18. This reconstruction uses Trinocular Stereo Algorithm.
    After constructing the disparity map, apply median filtering to remove a few outliers in the disparity map.
    Then the median filtered disparity map is combined with a registered color texture to reconstruct a 3D point cloud.
  • 19. 3D Video Transmission
    3D data is transmitted in compressed form using Modern Driven compression algorithm.
    System which generates 640x480 pixel depth color maps from 10 camera clusters in a rate of 15 frames per second (fps), requires 220 mbps bandwidth.
    Around 1.2 gbps is necessary for high quality effect.
  • 20. Applications
    Remote medical training and diagnosis.
  • 21. Automobile engineering.
  • 22. Remote and distributed education.
    Virtual travel and tourism.
    Art and Entertainment.
  • 23. Challenges
    Quality of transmitting multimedia and Tele-immersion data streams over the internet is affected by high packets loss rates.
    Expensive
    High bandwidth requirement.
  • 24. Thank you
    Queries??

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