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Low-cost telepresence for collaborative virtual environments.

Title
Low-cost telepresence for collaborative virtual environments.
Authors
Rhee S.M.Ziegler R.Park J.Naef M.Gross M.Kim M.H.
Ewha Authors
김명희
SCOPUS Author ID
김명희scopus
Issue Date
2007
Journal Title
IEEE transactions on visualization and computer graphics
ISSN
1077-2626JCR Link
Citation
vol. 13, no. 1, pp. 156 - 166
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We present a novel low-cost method for visual communication and telepresence in a CAVE -like environment, relying on 2D stereo-based video avatars. The system combines a selection of proven efficient algorithms and approximations in a unique way, resulting in a convincing stereoscopic real-time representation of a remote user acquired in a spatially immersive display. The system was designed to extend existing projection systems with acquisition capabilities requiring minimal hardware modifications and cost. The system uses infrared-based image segmentation to enable concurrent acquisition and projection in an immersive environment without a static background. The system consists of two color cameras and two additional b/w cameras used for segmentation in the near-IR spectrum. There is no need for special optics as the mask and color image are merged using image-warping based on a depth estimation. The resulting stereo image stream is compressed, streamed across a network, and displayed as a frame-sequential stereo texture on a billboard in the remote virtual environment.
DOI
10.1109/TVCG.2007.17
Appears in Collections:
엘텍공과대학 > 컴퓨터공학과 > Journal papers
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