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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    Tele immersion Tele immersion Presentation Transcript

    • Tele-immersion
      Presented by:
      Himanshu Sharma
      1207185
    • Contents
      Introduction
      History
      Tele-conferencing vs. Tele-immersion
      Working
      Applications
      Challenges
    • 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.
    • 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.
    • Artistic expression as proposed by Jaron in 1997
    • 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
    • WORKING
    • 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
    • 2D to 3D…
    • Image Acquisition
      • Bank of digital cameras capture participants from a variety of angels.
      • There are about 7-15 cameras clusters each contain 4 cameras out of which 3 are black and white and one is color.
      • B&W cameras are for stereo construction .
      • The color camera is for extracting the appearance.
      A camera cluster of 3 BW and 1 color cameras
    • Camera clusters
    • Each camera is synchronized to other camera.
      Each camera is connected to workstation.
    • 3D Construction
      computation
    • 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.
    • 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.
    • Applications
      Remote medical training and diagnosis.
    • Automobile engineering.
    • Remote and distributed education.
      Virtual travel and tourism.
      Art and Entertainment.
    • Challenges
      Quality of transmitting multimedia and Tele-immersion data streams over the internet is affected by high packets loss rates.
      Expensive
      High bandwidth requirement.
    • Thank you
      Queries??