Infrared Tracking System for Immersive Virtual Environments
| Autor: | Gaspar, F., Dias, M. S., Bastos, R. |
|---|---|
| Přispěvatelé: | Coelho, A., and Cláudio, A. P. |
| Rok vydání: | 2021 |
| Předmět: |
Model Fitting
Immersive Virtual Reality Infrared Tracking CAVE Ciências Naturais::Ciências da Computação e da Informação [Domínio/Área Científica] Blob Segmentation Epipolar geometry Pose Estimation Immersive virtual reality Blob segmentation Epipolar Geometry 3D reconstruction Model fitting 3D Reconstruction Infrared tracking Pose estimation |
| DOI: | 10.2312/pt.20091211 |
| Popis: | 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. ACTAS DO 17º ENCONTRO PORTUGUÊS DE COMPUTAÇÃO GRÁFICA Realidade Virtual e Aumentada, Reconstrução 3D e Visão por Computador 45 56 Filipe Gaspar, Miguel Sales Dias, and Rafael Bastos Immersive Virtual Reality, CAVE, Infrared Tracking, Blob Segmentation, Epipolar Geometry, 3D Reconstruction, Model Fitting, Pose Estimation |
| Databáze: | OpenAIRE |
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