title: Content-based image retrieval for scientific literature access.
abstract: OBJECTIVE
  An increasing number of articles are published electronically in the scientific literature, but access is limited to alphanumerical search on title, author, or abstract, and may disregard numerous figures. In this paper, we estimate the benefits of using content-based image retrieval (CBIR) on article figures to augment traditional access to articles.
  
  
  METHODS
  We selected four high-impact journals from the Journal Citations Report (JCR) 2005. Figures were automatically extracted from the PDF article files, and manually classified on their content and number of sub-figure panels. We make a quantitative estimate by projecting from data from the Cross-Language Evaluation Forum (ImageCLEF) campaigns, and qualitatively validate it through experiments using the Image Retrieval in Medical Applications (IRMA) project.
  
  
  RESULTS
  Based on 2077 articles with 11,753 pages, 4493 figures, and 11,238 individual images, the predicted accuracy for article retrieval may reach 97.08%.
  
  
  CONCLUSIONS
  Therefore, CBIR potentially has a high impact in medical literature search and retrieval.
authors.affiliation: Department of Medical Informatics, Aachen University of Technology (RWTH), Aachen, Germany. deserno@ieee.org
authors.forename: T M
authors.initials: TM
authors.lastname: Deserno
authors.forename: S
authors.initials: S
authors.lastname: Antani
authors.forename: L Rodney
authors.initials: LR
authors.lastname: Long
mesh_terms: D016206:Databases, Bibliographic; D003952:Diagnostic Imaging; D006801:Humans; D016247:Information Storage and Retrieval; D020407:Internet