Vision-based Augmented Reality Applications
Yuko Uematsu, Hideo Saitô · InTech eBooks · 2008
In this chapter, we introduced a vision-based registration method using multiple planar markers placed at arbitrary positions and poses is introduced. We also demonstrate the performance of the proposed method by applying it to two AR applications. In contrast with the previous methods using multiple markers, this method requires no time-consuming measurement of the marker arrangement. Since the marker arrangement can be estimated by the Projective Space, the markers can be distributed at arbitrary positions and poses without a prior knowledge. This method can be applied not only for on the tabletop but also inside the room. Both of the baseball system and bowling system can be enjoyed on the tabletop in the real world only with a web-camera and a handheld monitor connected a general PC. It is a big advantage for home users that these applications do not require any special device. Users can interactively change their view points by moving around the tabletop because of this registration method with multiple markers. In contrast with usual CG viewers in which a mouse or a keyboard is used for changing view points, changing view points by moving of the users is very intuitive and easy. By visualising 3D objects in front of the users, these applications will be future-oriented 3D game.