The Lab



Teleimmerson Lab includes facilities to support research in 3D stereo reconstruction, teleimmersion, motion capturing, remote monitoring, and human movement analysis. The primary goal of the lab is teleimmersion for which a teleimmersion apparatus with 48 cameras has been developed to capture 3D data of users with accuracy of about 1-2cm. The workspace of the accurately calibrated cameras is approximately 6โ€™ x 6โ€™ x 6โ€™ with precise hardware synchronization to allows simultaneous capture of images on up to 48 cameras. The cameras are connected to 12 servers which run the stereo reconstruction algorithm allowing full-body 3D reconstruction of user(s) inside the space with 15-20 frames per second (FPS). These can be delivered in real-time over the network to a local display or to a remote location. Remote and local users can be displayed inside a virtual environment with synthetic virtual objects or data. Examples of the teleimmersive applications that the lab is currently focusing on include collaborative work on 3D data sets such as medical (MRI, 3D x-ray), geoscientific collaboration, collaborative design in CAD modeling, collaborative archeology, and remote teaching of physical activities/skills (such as in rehabilitation and dance performance).

To analyze human motion, the lab use commercially available marker based motion capture system (PhaseSpace, Inc.) which allows tracking of 64+ markers with the frequency of 480 Hz. The high speed of the marker acquisition allows recording of fast body movements, such as those found in dance, sports, fall analysis, etc. The system can also be used in connection with different camera systems used by the lab to evaluate the accuracy of the algorithms for calibration and 3D reconstruction.

Aside from the teleimmersion work, the second part of the lab is using wireless sensor motes with built-in accelerometer and gyroscope which can be used for accurate analysis of motion dynamics in different healthcare applications. The wireless technology allows for unobtrusive monitoring and capturing of data in real time.