Infrared Tracking System for Immersive Virtual Environments

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dc.contributor.authorGaspar, Filipeen_US
dc.contributor.authorDias, Miguel Salesen_US
dc.contributor.authorBastos, Rafaelen_US
dc.contributor.editorCoelho, António and Cláudio, Ana Paulaen_US
dc.date.accessioned2021-06-18T07:37:49Z
dc.date.available2021-06-18T07:37:49Z
dc.date.issued2021
dc.description.abstractIn 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.en_US
dc.description.sectionheadersRealidade Virtual e Aumentada, Reconstrução 3D e Visão por Computador
dc.description.seriesinformationACTAS DO 17º ENCONTRO PORTUGUÊS DE COMPUTAÇÃO GRÁFICA
dc.identifier.doi10.2312/pt.20091211
dc.identifier.isbn978-3-03868-154-0
dc.identifier.pages45-56
dc.identifier.urihttps://doi.org/10.2312/pt.20091211
dc.identifier.urihttps://diglib.eg.org:443/handle/10.2312/pt20091211
dc.publisherThe Eurographics Associationen_US
dc.subjectImmersive Virtual Reality
dc.subjectCAVE
dc.subjectInfrared Tracking
dc.subjectBlob Segmentation
dc.subjectEpipolar Geometry
dc.subject3D Reconstruction
dc.subjectModel Fitting
dc.subjectPose Estimation
dc.titleInfrared Tracking System for Immersive Virtual Environmentsen_US
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Portuguese Meeting on Computer Graphics 2009