A translation approach to portable ontology specifications
Knowledge Acquisition - Special issue: Current issues in knowledge modeling
SUSAN—A New Approach to Low Level Image Processing
International Journal of Computer Vision
Principles of visual information retrieval
Principles of visual information retrieval
The design and implementation of the redland RDF application framework
Proceedings of the 10th international conference on World Wide Web
Ontologies: a silver bullet for knowledge management and electronic commerce
Ontologies: a silver bullet for knowledge management and electronic commerce
The Semantic Web And Its Languages
IEEE Intelligent Systems
PicToSeek: combining color and shape invariant features for image retrieval
IEEE Transactions on Image Processing
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This paper presents a novel approach for image retrieval from digital collections. Specifically, we describe IRONS (Image Retrieval with Ontological Descriptions of Shapes), a system based on the application of several novel algorithms that combine low-level image analysis techniques with automatic shape extraction and indexing. In order to speed up preprocessing, we have proposed and implemented the convex regions algorithm and discrete curve evolution approach. The image indexing module of IRONS is addressed using two proposed algorithms: the tangent space and the two-segment turning function for shapes representation invariant to rotation and scale. Another goal of the proposed method is the integration of user-oriented descriptions, which leads to more complete retrieval by accelerating the convergence to the expected result. For the definition of image semantics, ontology annotation of sub-regions has been used.