Jyh-Ming Lien and Ruzena Bajcsy

EECS Department, University of California, Berkeley

Technical Report No. UCB/EECS-2006-170

December 12, 2006

http://www2.eecs.berkeley.edu/Pubs/TechRpts/2006/EECS-2006-170.pdf

Due to technology advances, reconstructing three-dimensional representations of physical environments in real time using cheap and non-professional cameras and PCs becomes possible. These advances will make 3-D tele-immersive environments available for everyone in the near future. However, the data captured by a Tele-Immersion (TI) system can be very large. Compression is needed to ensure real-time transmission of the data. Due to this real-time requirement, compressing TI data can be a challenging task and no current techniques can effectively address this issue. In this paper, we propose a model driven compression. The main idea of this approach is to take advantage of prior knowledge of objects, e.g., human figures, in the physical environments and to represent their motions using just a few parameters. The proposed compression method provides tunable and high compression ratios (from 50:1 to 5000:1) with reasonable reconstruction quality. Moreover, the proposed method can estimate motions from the noisy data captured by our TI system in real time.

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BibTeX citation:

@techreport{Lien:EECS-2006-170,
    Author= {Lien, Jyh-Ming and Bajcsy, Ruzena},
    Title= {Model Driven Compression of 3-D Tele-Immersion Data},
    Year= {2006},
    Month= {Dec},
    Url= {http://www2.eecs.berkeley.edu/Pubs/TechRpts/2006/EECS-2006-170.html},
    Number= {UCB/EECS-2006-170},
    Abstract= {Due to technology advances, reconstructing three-dimensional representations of physical environments in real time using cheap and non-professional cameras and PCs becomes possible. These advances will make 3-D tele-immersive environments available for everyone in the near future. However, the data captured by a Tele-Immersion (TI) system can be very large. Compression is needed to ensure real-time transmission of the data. Due to this real-time requirement, compressing TI data can be a challenging task and no current techniques can effectively address this issue. In this paper, we propose a model driven compression. The main idea of this approach is to take advantage of prior knowledge of objects, e.g., human figures, in the physical environments and to represent their motions using just a few parameters. The proposed compression method provides tunable and high compression ratios (from 50:1 to 5000:1) with reasonable reconstruction quality. Moreover, the proposed method can estimate motions from the noisy data captured by our TI system in real time.},
}

EndNote citation:

%0 Report
%A Lien, Jyh-Ming 
%A Bajcsy, Ruzena 
%T Model Driven Compression of 3-D Tele-Immersion Data
%I EECS Department, University of California, Berkeley
%D 2006
%8 December 12
%@ UCB/EECS-2006-170
%U http://www2.eecs.berkeley.edu/Pubs/TechRpts/2006/EECS-2006-170.html
%F Lien:EECS-2006-170