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- W2785413060 abstract "In this paper, we describe the theoretical foundations and engineering approach of an infrared-optical tracking system specially design for large scale immersive virtual environments (VE) or augmented reality (AR) settings. The system described is capable of tracking independent retro-reflective markers arranged in a 3D structure (artefact) in real time (25Hz), recovering all possible 6 Degrees of Freedom (DOF). These artefacts can be adjusted to the user’s stereo glasses to track his/her pose while immersed in the VE or AR, or can be used as a 3D input device. The hardware configuration consists in 4 shutter-synchronized cameras attached with band-pass infrared filters and the artefacts are illuminated by infrared array-emitters. The system was specially designed to fit a room with sizes of 5.7m x 2.7m x 3.4 m, which match the dimensions of the CAVE-Hollowspace of Lousal where the system will be deployed. Pilot lab results have shown a latency of 40ms in tracking the pose of two artefacts with 4 infrared markers, achieving a frame-rate of 24.80 fps and showing a mean accuracy of 0.93mm/0.52o and a mean precision of 0.08mm/0.04o, respectively, in overall translation/rotation DOFs, fulfilling the system requirements initially defined." @default.
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- W2785413060 date "2009-01-01" @default.
- W2785413060 modified "2023-09-23" @default.
- W2785413060 title "Infrared Tracking System for Immersive Virtual Environments" @default.
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- W2785413060 doi "https://doi.org/10.2312/pt.20091211" @default.
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