Robert J. O'Callaghan

Video Retrieval Using Global Features in Keyframes

David R. Bull, Marcus Jerome Pickering, Stefan M. Rüger, 2002, TREC.

Combined morphological-spectral unsupervised image segmentation

David R. Bull, Robert J. O'Callaghan, D. Bull, 2005, IEEE Transactions on Image Processing.

Espace de similarité basé à un classement mutuel pour navigation, visualisation et groupage dans des bases de données d'images

Robert J. O'Callaghan, Miroslaw Bober, 2005 .

Pixel- and region-based image fusion with complex wavelets

Cedric Nishan Canagarajah, David R. Bull, Stavri G. Nikolov, 2007, Inf. Fusion.

Improved illumination-invariant descriptors for robust colour object recognition

David R. Bull, Robert J. O'Callaghan, 2002, 2002 IEEE International Conference on Acoustics, Speech, and Signal Processing.