Coelho, E.M.;
Julier, S.J.;
Maclntyre, B.;
(2004)
OSGAR: a scene graph with uncertain transformations.
In:
Third IEEE and ACM International Symposium on Mixed and Augmented Reality. ISMAR 2004.
(pp. pp. 6-15).
IEEE
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Abstract
An important problem for augmented reality is registration error. No system can be perfectly tracked, calibrated or modeled. As a result, the overlaid graphics are not aligned perfectly with objects in the physical world. This can be distracting, annoying or confusing. In this paper, we propose a method for mitigating the effects of registration errors that enables application developers to build dynamically adaptive AR displays. Our solution is implemented in a programming toolkit called OSGAR. Built upon OpenSceneGraph (OSG), OSGAR statistically characterizes registration errors, monitors those errors and, when a set of criteria are met, dynamically adapts the display to mitigate the effects of the errors. Because the architecture is based on a scene graph, it provides a simple, familiar and intuitive environment for application developers. We describe the components of OSGAR, discuss how several proposed methods for error registration can be implemented, and illustrate its use through a set of examples.
| Type: | Proceedings paper |
|---|---|
| Title: | OSGAR: a scene graph with uncertain transformations |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ISMAR.2004.44 |
| Publisher version: | http://dx.doi.org/10.1109/ISMAR.2004.44 |
| Language: | English |
| Additional information: | ©2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
| URI: | https://discovery.ucl.ac.uk/id/eprint/13361 |
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