Abstract
Augmented reality is a technology which enhances a real environment with virtual objects such as annotations and computer graphics objects. Using a wearable computer, outdoor augmented reality can be realized. Therefore, in sight spots, the system can be used as a sightseeing guidance system that superimposes annotations on a real object such as a building. This paper proposes an outdoor wearable augmented reality system using a hand-held GPS. The proposed system measures user's position and orientation using the hand-held GPS and a fiber optic gyro, respectively, in order to align real and virtual coordinate systems. Our system overlays only annotation information to the buildings when a user is moving, while the system corrects the error of the inertial sensor by using an image-based technique and overlays the CG objects that requires the high accuracy of registration when a user is resting. The system has been successfully experimented in outdoor environments.
