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Low-cost telepresence for collaborative virtual environments.
IEEE Trans Vis Comput Graph. 2007 Jan-Feb; 13(1):156-66.IT

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.

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Publisher Full Text

Authors+Show Affiliations

Rhee SM
Visual Computing and Virtual Reality Laboratory, Department of Computer Science and Engineering, Ewha Womans University, Daehyun-Dong, Seodaemun-Gu, Seoul, Korea. blue@ewhain.net
Ziegler R
No affiliation info available
Park J
No affiliation info available
Naef M
No affiliation info available
Gross M
No affiliation info available
Kim MH
No affiliation info available

MeSH

AlgorithmsComputer GraphicsCooperative BehaviorEnvironmentImage EnhancementImage Interpretation, Computer-AssistedImaging, Three-DimensionalInformation DisseminationInformation Storage and RetrievalReproducibility of ResultsSensitivity and SpecificityTelecommunicationsUser-Computer Interface

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17093344

Citation

Rhee, Seon-Min, et al. "Low-cost Telepresence for Collaborative Virtual Environments." IEEE Transactions On Visualization and Computer Graphics, vol. 13, no. 1, 2007, pp. 156-66.
Rhee SM, Ziegler R, Park J, et al. Low-cost telepresence for collaborative virtual environments. IEEE Trans Vis Comput Graph. 2007;13(1):156-66.
Rhee, S. M., Ziegler, R., Park, J., Naef, M., Gross, M., & Kim, M. H. (2007). Low-cost telepresence for collaborative virtual environments. IEEE Transactions On Visualization and Computer Graphics, 13(1), 156-66.
Rhee SM, et al. Low-cost Telepresence for Collaborative Virtual Environments. IEEE Trans Vis Comput Graph. 2007 Jan-Feb;13(1):156-66. PubMed PMID: 17093344.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Low-cost telepresence for collaborative virtual environments. AU - Rhee,Seon-Min, AU - Ziegler,Remo, AU - Park,Jiyoung, AU - Naef,Martin, AU - Gross,Markus, AU - Kim,Myoung-Hee, PY - 2006/11/10/pubmed PY - 2007/2/8/medline PY - 2006/11/10/entrez SP - 156 EP - 66 JF - IEEE transactions on visualization and computer graphics JO - IEEE Trans Vis Comput Graph VL - 13 IS - 1 N2 - 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. SN - 1077-2626 UR - https://www.unboundmedicine.com/medline/citation/17093344/Low_cost_telepresence_for_collaborative_virtual_environments_ L2 - https://doi.ieeecomputersociety.org/10.1109/TVCG.2007.17 DB - PRIME DP - Unbound Medicine ER -