This paper presents visually enhanced sports entertainmentapplications: AR Baseball Presentation System and Interactive ARBowling System. We utilize vision-based augmented reality forgetting immersive feeling. First application is an observationsystem of a virtual baseball game on the tabletop. 3D virtualplayers are playing a game on a real baseball field model, so thatusers can observe the game from favorite view points through ahandheld monitor with a web camera. Second application is a bowlingsystem which allows users to roll a real ball down a real bowlinglane model on the tabletop and knock down virtual pins. The userswatch the virtual pins through the monitor. The lane and the ballare also tracked by vision-based tracking. In those applications, weutilize multiple 2D markers distributed at arbitrary positions anddirections. Even though the geometrical relationship among themarkers is unknown, we can track the camera in very wide area.
展开▼
