Caliph & Emir are MPEG-7 based Java prototypes for digital photo and image annotation and retrieval supporting graph like annotation for semantic metadata and content based image retrieval using MPEG-7 descriptors.
Diigo is about "Social Annotation", a superset of social bookmarking. We believe that the social annotation service provided by Diigo can really enhance your experience for online browsing and interactions, and for information gathering and sharing.
Java & MPEG-7 based tools for textual as well as semantic annotation and retrieval of digital photos and images, supporting structured, unstructured and semantic, graph like annotation and content based, metadata based and semantic image retrieval.
Foundcity is a social mapping tool for creating a personalized map of your life on-the-fly. Using your mobile phone, you tag or capture photos throughout the day, label them with any words you want, and send them to your map
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M. Sabou, K. Bontcheva, L. Derczynski, and A. Scharl. Proceedings of the Ninth International Conference on Language Resources and Evaluation, ŁREC\ 2014, Reykjavik, Iceland, May 26-31, 2014, page 859--866. European Language Resources Association \(ELRA)\, (2014)