Multimedia Information Retrieval Based on Spatiotemporal Relationships Using Description Logics.pdf

Multimedia Information Retrieval Based on Spatiotemporal Relationships Using Description Logics for the Semantic Web Kwan-Sang Na,1,* Hyunjang Kong,2,? Miyoung Cho,2,? Pankoo Kim,2,§ Doo-Kwon Baik1,? 1Department of Computer Science and Engineering, Korea University, Seoul 136-701, Korea 2Department of Computer Science and Engineering, Chosun University, Gwangju 501-759, Korea Since the latter half of the 1990s, ontology has been the main area of study in the semantic web. Ontology has been actively studied in several areas for a long time. There are many ontological applications and construction methods. In the study of the semantic web, ontologies are built using OWL capabilities. However, it is not suitable for managing spatial relationships. To rep- resent spatial relationships, we try to create new vocabularies based on these two theories. Mod- eling topological relationships are accomplished using a neighborhood graph that only considers topological relatedness. In addition, we define the new vocabulary to represent the spatial rela- tionships based on spatial description logic. In this article, we focus on multimedia information retrieval. We use the new vocabularies that were defined using these two theories for represent- ing spatial relationships in image and video retrieval. ? 2006 Wiley Periodicals, Inc. 1. INTRODUCTION Ontology is the focus of a great deal of attention in the study of the semantic web. Many studies on ontology focused on the methods of building ontologies and the various languages for expressing web ontologies. In the study of ontology, careful consideration should be paid to the accurate classification of a specific thing and the adequate way of representing the relationships that occur between the respective concepts when the domain ontology is built. As the relationships of each concept are expressed, various relationships will occur. Recently, there was *Author to whom all correspondence should be addressed: e-mail: ksna@kt.co.kr. ?e