Simultaneous Estimation of the Number of Humans and their Movement Loci in a Room Using Infrared Sensors

When creating a ubiquitous service environment for humans, it is very important to be able to determine their location and movement. In this paper, we propose an algorithm that simultaneously estimates the number of humans and the movement locus for each human in a room, using only the binary sensing data obtained from infrared sensors attached to the ceiling. Compared to other camera-based systems, the estimation results of our algorithm can be used directly in application systems without violating anyone´s privacy. After describing the proposed algorithm in detail, we then describe our evaluation results.