Merging virtual objects with the real world: seeing ultrasound imagery within the patient
SIGGRAPH '92 Proceedings of the 19th annual conference on Computer graphics and interactive techniques
EigenTracking: Robust Matching and Tracking of Articulated Objects Using a View-Based Representation
International Journal of Computer Vision
IEEE Transactions on Pattern Analysis and Machine Intelligence
Calibration-Free Augmented Reality
IEEE Transactions on Visualization and Computer Graphics
Recent Advances in Augmented Reality
IEEE Computer Graphics and Applications
Real-time tracking of image regions with changes in geometry and illumination
CVPR '96 Proceedings of the 1996 Conference on Computer Vision and Pattern Recognition (CVPR '96)
Active Face Tracking and Pose Estimation in an Interactive Room
CVPR '96 Proceedings of the 1996 Conference on Computer Vision and Pattern Recognition (CVPR '96)
VR '99 Proceedings of the IEEE Virtual Reality
A Motion-Stabilized Outdoor Augmented Reality System
VR '99 Proceedings of the IEEE Virtual Reality
Fusion of Vision and Gyro Tracking for Robust Augmented Reality Registration
VR '01 Proceedings of the Virtual Reality 2001 Conference (VR'01)
A state-based technique for the summarization and recognition of gesture
ICCV '95 Proceedings of the Fifth International Conference on Computer Vision
Real-Time Camera Parameter Estimation from Images for a Mixed Reality System
ICPR '00 Proceedings of the International Conference on Pattern Recognition - Volume 4
Autocalibration of an Electronic Compass for Augmented Reality
ISMAR '05 Proceedings of the 4th IEEE/ACM International Symposium on Mixed and Augmented Reality
Robotic eye-to-hand coordination: Implementing visual perception to object manipulation
International Journal of Hybrid Intelligent Systems - Recent developments in Hybrid Intelligent Systems
An improved colored-marker based registration method for AR applications
ICCSA'05 Proceedings of the 2005 international conference on Computational Science and Its Applications - Volume Part III
Multiple 3D object position estimation and tracking using double filtering on multi-core processor
Multimedia Tools and Applications
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Accurate 3D registration is a key issue in the Augmented Reality (AR) applications, particularly where are no markers placed manually. In this paper, an efficient markerless registration algorithm is presented for both outdoor and indoor AR system. This algorithm first calculates the correspondences among frames using fixed region tracking, and then estimates the motion parameters on projective transformation following the homography of the tracked region. To achieve the illumination insensitive tracking, the illumination parameters are solved jointly with motion parameters in each step. Based on the perspective motion parameters of the tracked region, the 3D registration, the camera's pose and position, can be calculated with calibrated intrinsic parameters. A marker-less AR system is described using this algorithm, and the system architecture and working flow are also proposed. Experimental results with comparison quantitatively demonstrate the correctness of the theoretical analysis and the robustness of the registration algorithm.