Abstract
This paper describes a method for tracking identified persons in a room using the accelerometer attached to each footwear and the laser range finder (LRF) placed on the floor. Even though the LRF measures positions of foot on the floor, it is difficult to identify each person since the floor sensor acquires only the outline of foot. In order to identify the foot, the accelerometer is attached to the footwear. When the feet contacts the floor, it starts to be measured as a blob by the LRF and the acceleration becomes constant. The system detects the timing of such state changes and finds the correspondence between blobs and accelerometers.
