  This paper was originally submitted to Xinova as a response to a Request for
Invention (RFI) on new event monitoring methods. In this paper, a new object
tracking algorithm using multiple cameras for surveillance applications is
proposed. The proposed system can detect sudden-appearance-changes and
occlusions using a hidden Markovian statistical model. The experimental results
confirm that our system detect the sudden-appearance changes and occlusions
reliably.
