ARCAMA-3D --- a context-aware augmented reality mobile platform for environmental discovery
W2GIS'12 Proceedings of the 11th international conference on Web and Wireless Geographical Information Systems
Technical Section: Exploring the use of handheld AR for outdoor navigation
Computers and Graphics
Achieving robust alignment for outdoor mixed reality using 3D range data
Proceedings of the 18th ACM symposium on Virtual reality software and technology
Matching optimization based on KLT algorithm in natural feature tracking of augmented reality
Proceedings of the 11th ACM SIGGRAPH International Conference on Virtual-Reality Continuum and its Applications in Industry
Sketching up the world: in situ authoring for mobile Augmented Reality
Personal and Ubiquitous Computing
IMAF: in situ indoor modeling and annotation framework on mobile phones
Personal and Ubiquitous Computing
Personal and Ubiquitous Computing
Augmented reality annotations to assist persons with Alzheimers and their caregivers
Personal and Ubiquitous Computing
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Outdoor Augmented Reality typically requires tracking in unprepared environments. For global registration, Global Positioning System (GPS) is currently the best sensing technology, but its precision and update rate are not sufficient for high quality tracking. We present a system that uses Kalman filtering for fusion of Differential GPS (DGPS) or Real-Time Kinematic (RTK) based GPS with barometric heights and also for an inertial measurement unit with gyroscopes, magnetometers and accelerometers to improve the transient oscillation. Typically, inertial sensors are subjected to drift and magnetometer measurements are distorted by electro-magnetic fields in the environment. For compensation, we additionally apply a visual orientation tracker which is drift-free through online mapping of the unknown environment. This tracker allows for correction of distortions of the 3-axis magnetic compass, which increases the robustness and accuracy of the pose estimates. We present results of applying this approach in an industrial application scenario.