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Extending relational databases to support content-based retrieval of medical images

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5 Author(s)
Araujo, M.R.B. ; Comput. Sci. Dept., Univ. of Sao Paulo, Sao Carlos, Brazil ; Traina, A.J.M. ; Traina, A. ; Bueno, J.M.
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This paper shows how to support images in a relational database, so it can fulfill the requirements to be used as the storage mechanism of a PACS. This support includes the ability to answer similarity queries based on the image content, providing fast image retrieval based on indexing structures. The main concept allowing this support is the definition of distance functions based on features, which are extracted from the images as they are stored in the database. An extension to SQL enables the construction of an interpreter that intercepts the extended commands and translates them into standard SQL, allowing one to take advantage of any relational database server. We describe experiments made with a prototype implemented using these concepts, which allowed answering queries up to 20 times faster than using existing relational servers alone.

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Computer-Based Medical Systems, 2002. (CBMS 2002). Proceedings of the 15th IEEE Symposium on

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