Laser scanner based foot motion detection for intuitive robot user interface system

In order to achieve effective interaction between humans and robots, user interface system is one of important factors. To achieve a valid and appropriate user interface system, we have introduced a new system that consists of a beam projector that can display images for interacting with users and a laser scanner that can detect user's foot motion so that the system recognizes user's input and intention. In this paper, we have focused on how to cause projected images to be rectangular so that users can interact with ordinary rectangular images instead of trapezoidal images that will be produced if the beam projector attached on the robot projects images sideling and how to distinguish user's foot motions according to two classifications, drag motion and click motion. Finally, we have executed a test for checking the validity of the proposed system and have examined limitations and proposed further work for this system.