Parallel Tracking and Mapping for Small AR Workspaces. Klein, G. & Murray, D. Sixth IEEE/ACM International Symposium on Mixed and Augmented Reality, ISMAR 2007, 13-16 November 2007, Nara, Japan, 2007.
abstract   bibtex   
This paper presents a method of estimating camera pose in an unknown scene. While this has previously been attempted by adapting SLAM algorithms developed for robotic exploration, we propose a system specifically designed to track a hand-held camera in a small AR workspace. We propose to split tracking and mapping into two separate tasks, processed in parallel threads on a dual-core computer: one thread deals with the task of robustly tracking erratic hand-held motion, while the other produces a 3D map of point features from previously observed video frames. This allows the use of computationally expensive batch optimisation techniques not usually associated with real-time operation: The result is a system that produces detailed maps with thousands of landmarks which can be tracked at frame-rate, with an accuracy and robustness rivalling that of state-of-the-art model-based systems.
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 title = {Parallel Tracking and Mapping for Small AR Workspaces},
 type = {article},
 year = {2007},
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 abstract = {This paper presents a method of estimating camera pose in an unknown scene. While this has previously been attempted by adapting SLAM algorithms developed for robotic exploration, we propose a system specifically designed to track a hand-held camera in a small AR workspace. We propose to split tracking and mapping into two separate tasks, processed in parallel threads on a dual-core computer: one thread deals with the task of robustly tracking erratic hand-held motion, while the other produces a 3D map of point features from previously observed video frames. This allows the use of computationally expensive batch optimisation techniques not usually associated with real-time operation: The result is a system that produces detailed maps with thousands of landmarks which can be tracked at frame-rate, with an accuracy and robustness rivalling that of state-of-the-art model-based systems.},
 bibtype = {article},
 author = {Klein, Georg and Murray, David},
 journal = {Sixth IEEE/ACM International Symposium on Mixed and Augmented Reality, ISMAR 2007, 13-16 November 2007, Nara, Japan}
}

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