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Related Experiment Videos

Low-cost telepresence for collaborative virtual environments.

Seon-Min Rhee1, Remo Ziegler, Jiyoung Park

  • 1Visual Computing and Virtual Reality Laboratory, Department of Computer Science and Engineering, Ewha Womans University, Daehyun-Dong, Seodaemun-Gu, Seoul, Korea. blue@ewhain.net

IEEE Transactions on Visualization and Computer Graphics
|November 10, 2006
PubMed
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This study introduces a low-cost system for real-time 3D avatars in immersive environments. It enables effective visual communication and telepresence using stereo video and infrared segmentation.

Area of Science:

  • Computer Vision
  • Virtual Reality
  • Human-Computer Interaction

Background:

  • Immersive environments like CAVE systems offer unique telepresence experiences.
  • Existing systems often require expensive hardware and complex setups.
  • Real-time visual communication within these environments is challenging.

Purpose of the Study:

  • To develop a novel, low-cost method for creating realistic 3D avatars for telepresence in CAVE-like environments.
  • To enable seamless visual communication by accurately representing remote users in real-time.
  • To enhance existing projection systems with minimal hardware modification.

Main Methods:

  • Utilized 2D stereo-based video avatars combined with efficient algorithms.
  • Employed infrared-based image segmentation for concurrent acquisition and projection without a static background.

Related Experiment Videos

  • Integrated color and black-and-white cameras for near-IR spectrum segmentation.
  • Applied image-warping based on depth estimation to merge masked and color images without special optics.
  • Compressed and streamed the resulting stereo image for real-time display.

    • Main Results:

    • Achieved a convincing stereoscopic real-time representation of a remote user.
    • Demonstrated concurrent acquisition and projection in an immersive display.
    • Successfully merged visual data using depth-based image-warping.
    • Enabled low-cost enhancement of existing projection systems.

    Conclusions:

    • The developed system provides an effective and affordable solution for visual communication and telepresence in immersive environments.
    • The novel integration of stereo video and infrared segmentation offers a robust method for real-time avatar creation.
    • This approach significantly reduces hardware costs and complexity for CAVE-like systems.