Image retrieval with a multi-modality ontology
Huan Wang · 2009
Ontology represents domain concepts and relations in a form of semantic network.Different from the traditional flat structured feature vectors, ontology provides more information through concept definition and relation inference.Many research works use ontologies in information matchmaking and retrieval.This trend is further accelerated by the convergence of various information sources supported by ontologies in the multimedia research field.Efforts have been made to shift traditional content-based retrieval approaches toward concept-based approaches.Both text and image features are extracted and integrated to improve the classification and retrieval performance.However, there are many open issues on the ontology understanding, definition, construction, utilization and implementation.The extra work required by ontology based approaches becomes one of the major difficulties that hedge against the development.First of all, I would like to express my sincere gratitude to my supervisor, Dr. Liang-Tien Chia, who has given me invaluable advice