The objective of advanced surveillance systems is not only to collect
as much sensor data as possible, but also to process and represent it in
a meaningful way for supporting situation awareness of a decision maker.
However, in today’s surveillance systems, there is still a need for information
processing methods that meet these higher-level objectives. In this article,
the information flow inside of an advanced surveillance system is highlighted
and the term situation is discussed with respect to different abstraction levels.
Furthermore, several challenges are identified that an advanced system has to
address. Therefore, methods selected for information processing should meet
these challenges in order to provide a high-level functionality for situation