Contents I. Introduction
Human tracking is the process of determining the existence and location of humans with some detecting signals from certain tracking systems. It is desirable for kinds of potential applications no. 1imited to human counting, human action detection, surveillance and robotics [1]–[2] [3]. Conventional tracking systems always use vision-based approaches based on video cameras [4] and extract the target's position or other moving parameters through plenty of raw data captured by plural video monitors.
