Proceedings of the 2001 conference on Virtual reality, archeology, and cultural heritage
Augmenting reality with geo-referenced information for environmental management
Proceedings of the 10th ACM international symposium on Advances in geographic information systems
Recent Advances in Augmented Reality
IEEE Computer Graphics and Applications
Accurate Image Overlay on Video See-Through HMDs Using Vision and Accelerometers
VR '00 Proceedings of the IEEE Virtual Reality 2000 Conference
Vision-Based Augmented Reality for Pilot Guidance in Airport Runways and Taxiways
ISMAR '04 Proceedings of the 3rd IEEE/ACM International Symposium on Mixed and Augmented Reality
Registration Based on Projective Reconstruction Technique for Augmented Reality Systems
IEEE Transactions on Visualization and Computer Graphics
Registration Using Natural Features for Augmented Reality Systems
IEEE Transactions on Visualization and Computer Graphics
Implicit 3D modeling and tracking for anywhere augmentation
Proceedings of the 2007 ACM symposium on Virtual reality software and technology
Marker-less registration based on template tracking for augmented reality
Multimedia Tools and Applications
Technical Section: All around the map: Online spherical panorama construction
Computers and Graphics
Going out: robust model-based tracking for outdoor augmented reality
ISMAR '06 Proceedings of the 5th IEEE and ACM International Symposium on Mixed and Augmented Reality
Environmental Content Creation and Visualisation in the `Future Internet'
Future Internet --- FIS 2008
Re-photography and Environment Monitoring Using a Social Sensor Network
ICIAP '09 Proceedings of the 15th International Conference on Image Analysis and Processing
Technical Section: A generalized registration method for augmented reality systems
Computers and Graphics
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Registration for outdoor systems for Augmented Reality (AR) cannot rely on the methods developed for indoor use (e.g., magnetic tracking, fiducial markers). Although GPS and the earth's magnetic field can be used to obtain a rough estimate of position and orientation, the precision of this registration method is not high enough for satisfying AR overlay. Computer vision methods can help to improve the registration precision by tracking visual clues whose real world positions are known. We have developed a system that can exploit horizon silhouettes for improving the orientation precision of a camera which is aligned with the user's view. It has been shown that this approach is able to provide registration even as a stand-alone system, although the usual limitations of computer vision prohibit to use it under unfavorable conditions. This paper describes the approach of registration by using horizon silhouettes. Based on the known observer location (from GPS), the 360 degree silhouette is computed from a digital elevation map database. Registration is achieved, when the extracted visual horizon silhouette segment is matched onto this predicted silhouette. Significant features (mountain peaks) are cues which provide hypotheses for the match. Several criteria are tested to find the best matching hypothesis. The system is implemented on a PC under Windows NT. Results are shown in this paper.