Hybrid Tracking for Outdoor Augmented Reality Applications
IEEE Computer Graphics and Applications
Visualizing reality in an augmented virtual environment
Presence: Teleoperators and Virtual Environments - Special issue: IEEE VR 2003
Robust line tracking using a particle filter for camera pose estimation
Proceedings of the ACM symposium on Virtual reality software and technology
Parallel Tracking and Mapping for Small AR Workspaces
ISMAR '07 Proceedings of the 2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality
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One of the key requirements for an augmented realitysystem is a tracking system that determines the user'sviewpoint accurately. Many vision-based tracking systemsexhibit limited tracking range due to their dependence onpre-calibrated features. Previous extendible-trackingsystems only make use of point features. This paperdescribes an extendible tracking method that integratespre-calibrated landmarks and natural line features forcamera tracking. Extendible and robust tracking isachieved by dynamically calibrating prior uncalibrated 3Dstructure of line features. The experimental resultsindicate the effectiveness of this approach for extendingthe tracking range and reducing dependence on theprepared environment.