Zusammenfassung
In recent years, along with the expansion of Web 2.0 and social networks, an extreme growth of
multimedia content on the Web is registered. That multimedia content is mostly in the form of images and
videos. To enable enhanced use, reuse and retrieval of multimedia content from the Web, that content needs to
be annotated. Several multimedia metadata standards and a number of vocabularies commonly used for
annotating multimedia content exist today. Semantic Web technologies, like RDF and ontologies, provide well-
defined meaning for the multimedia content, enabling better processing of their annotations by computers and
applications. Formal language OWL, along with its sublanguages, is used for defining ontologies on the
Semantic Web. In this paper a brief overview of ontologies in general and selected specialized multimedia
ontologies that can be used for semantically rich multimedia annotation is presented.
Nutzer