This document summarizes Chris Catton's presentation on building an ontology-driven image database called BioImage for biologists. Some key points: 1) Biological images are important for research but current databases lack rich metadata searchability; BioImage aims to address this need with semantic web architecture. 2) Ontologies can improve image retrieval over traditional databases by linking images to ontology instances rather than free text alone. 3) However, ontologies also have challenges including potential slow performance, unproven scalability, and the fact that as scientific understanding evolves, the ontology may become outdated or incompatible with new paradigms. 4) The use of named graphs in RDF may help address issues