Sensors 2009, 9(12), 10097-10116; doi:10.3390/s91210097
Article

Registration Combining Wide and Narrow Baseline Feature Tracking Techniques for Markerless AR Systems

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Received: 19 October 2009; in revised form: 11 December 2009 / Accepted: 2 December 2009 / Published: 11 December 2009
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Augmented reality (AR) is a field of computer research which deals with the combination of real world and computer generated data. Registration is one of the most difficult problems currently limiting the usability of AR systems. In this paper, we propose a novel natural feature tracking based registration method for AR applications. The proposed method has following advantages: (1) it is simple and efficient, as no man-made markers are needed for both indoor and outdoor AR applications; moreover, it can work with arbitrary geometric shapes including planar, near planar and non planar structures which really enhance the usability of AR systems. (2) Thanks to the reduced SIFT based augmented optical flow tracker, the virtual scene can still be augmented on the specified areas even under the circumstances of occlusion and large changes in viewpoint during the entire process. (3) It is easy to use, because the adaptive classification tree based matching strategy can give us fast and accurate initialization, even when the initial camera is different from the reference image to a large degree. Experimental evaluations validate the performance of the proposed method for online pose tracking and augmentation.
Keywords: augmented reality; registration; natural features; wide baseline; narrow baseline; scale invariant feature transform
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MDPI and ACS Style

Duan, L.; Guan, T.; Yang, B. Registration Combining Wide and Narrow Baseline Feature Tracking Techniques for Markerless AR Systems. Sensors 2009, 9, 10097-10116.

AMA Style

Duan L, Guan T, Yang B. Registration Combining Wide and Narrow Baseline Feature Tracking Techniques for Markerless AR Systems. Sensors. 2009; 9(12):10097-10116.

Chicago/Turabian Style

Duan, Liya; Guan, Tao; Yang, Bo. 2009. "Registration Combining Wide and Narrow Baseline Feature Tracking Techniques for Markerless AR Systems." Sensors 9, no. 12: 10097-10116.

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