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Gaspar, F., Dias, M. S. & Bastos, R. (2021). Infrared tracking system for immersive virtual environments. In Coelho, A., and Cláudio, A. P. (Ed.), Actas do 17º Encontro Português de Computação Gráfica: Realidade Virtual e Aumentada, Reconstrução 3D e Visão por Computador. (pp. 45-56). Covilhã: Eurographics Association.
F. A. Gaspar et al., "Infrared tracking system for immersive virtual environments", in Actas do 17º Encontro Português de Computação Gráfica: Realidade Virtual e Aumentada, Reconstrução 3D e Visão por Computador, Coelho, A., and Cláudio, A. P., Ed., Covilhã, Eurographics Association, 2021, pp. 45-56
@inproceedings{gaspar2021_1724525358884, author = "Gaspar, F. and Dias, M. S. and Bastos, R.", title = "Infrared tracking system for immersive virtual environments", booktitle = "Actas do 17º Encontro Português de Computação Gráfica: Realidade Virtual e Aumentada, Reconstrução 3D e Visão por Computador", year = "2021", editor = "Coelho, A., and Cláudio, A. P.", volume = "", number = "", series = "", doi = "10.2312/pt.20091211", pages = "45-56", publisher = "Eurographics Association", address = "Covilhã", organization = "Eurographics Association", url = "https://diglib.eg.org/handle/10.2312/2633067" }
TY - CPAPER TI - Infrared tracking system for immersive virtual environments T2 - Actas do 17º Encontro Português de Computação Gráfica: Realidade Virtual e Aumentada, Reconstrução 3D e Visão por Computador AU - Gaspar, F. AU - Dias, M. S. AU - Bastos, R. PY - 2021 SP - 45-56 DO - 10.2312/pt.20091211 CY - Covilhã UR - https://diglib.eg.org/handle/10.2312/2633067 AB - 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 (ar-tefact) in real time (25Hz), recovering all possible 6 Degrees of Freedom (DOF). These artefacts can be ad-justed 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 ar-tefacts 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, fulfill-ing the system requirements initially defined. ER -