User Interface System for 10-ft and Large Screen Environments Using Penlights

We report on an interface system in this paper for 10-ft and large screen environments. The proposed system uses penlights for operations, including pointing. Although the method pointing by the system is indirect, it is virtually direct. Several gesture-based operations have also been implemented, which are used for applications. We found that the system was easy to learn and that users could quickly master its operations through an evaluation experiment.