Skip navigation
Logo
User training | Reference and search service

Library catalog

Retrievo
EDS
b-on
More
resources
Content aggregators
Please use this identifier to cite or link to this item:

acessibilidade

http://hdl.handle.net/10071/13658
acessibilidade
Title: Accurate infrared tracking system for immersive virtual environments
Authors: Gaspar, F.
Bastos, R.
Dias, M. S.
Keywords: Three-dimensional graphics and realism
Digitization and image capture
Segmentation
Scene analysis
Multimedia information systems
User interfaces
Issue Date: 2011
Publisher: IGI Global
Abstract: In large-scale immersive virtual reality VR environments, such as a CAVE, one of the most common problems is tracking the position of the user's head while he or she is immersed in this environment to reflect perspective changes in the synthetic stereoscopic images. In this paper, the authors describe the theoretical foundations and engineering approach adopted in the development of an infrared-optical tracking system designed for large scale immersive Virtual Environments VE or Augmented Reality AR settings. The system is capable of tracking independent retro-reflective markers arranged in a 3D structure in real time, recovering all possible 6DOF. These artefacts can be adjusted to the user's stereo glasses to track his or her head while immersed or used as a 3D input device for rich human-computer interaction HCI. The hardware configuration consists of 4 shutter-synchronized cameras attached with band-pass infrared filters and illuminated by infrared array-emitters. Pilot lab results have shown a latency of 40 ms when simultaneously 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/0.51ᄎ and a mean precision of 0.19mm/0.04ᄎ, respectively, in overall translation/rotation, fulfilling the requirements initially defined.
URI: https://ciencia.iscte-iul.pt/id/ci-pub-24328
http://hdl.handle.net/10071/13658
DOI: 10.4018/jcicg.2011070104
ISSN: 1947-3117
Publisher version: The definitive version is available at: http://dx.doi.org/10.4018/jcicg.2011070104
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

Files in This Item:
acessibilidade
File Description SizeFormat 
AITSfIVE_v1_8_inlinedFigures.pdf1.51 MBAdobe PDFView/Open    Request a copy


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Currículo DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.