In our earlier work, we proposed an architecture for a Web-based video database
management system (VDBMS) providing an integrated support for spatiotemporal and
semantic queries. In this paper, we focus on the task of spatiotemporal query processing and
also propose an SQL-like video query language that has the capability to handle a broad
range of spatiotemporal queries. The language is rule-based in that it allows users to
express spatial conditions in terms of Prolog-type predicates. Spatiotemporal query …